DTE


Line plots across dimensions of each concept
Tables

Table of contents



us-gaap:CommonStockValue
dei:LegalEntity

us-gaap:CommonStockSharesIssued
dei:LegalEntity

us-gaap:CommonStockSharesOutstanding
dei:LegalEntity
us-gaap:StatementEquityComponents

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:CostsAndExpenses
dei:LegalEntity

us-gaap:OperatingIncomeLoss
dei:LegalEntity

us-gaap:InterestExpense
dei:LegalEntity

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
dei:LegalEntity

us-gaap:NonoperatingIncomeExpense
dei:LegalEntity

us-gaap:IncomeTaxExpenseBenefit
dei:LegalEntity

us-gaap:ProfitLoss
us-gaap:StatementEquityComponents

us-gaap:ComprehensiveIncomeNetOfTax
dei:LegalEntity

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

us-gaap:NetIncomeLoss
dei:LegalEntity
us-gaap:StatementBusinessSegments
us-gaap:StatementEquityComponents, dei:LegalEntity

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest

us-gaap:Assets
dei:LegalEntity
dte:InvestmentsByConsolidatedAndNonconsolidatedEntities
dte:InvestmentsByConsolidatedAndNonconsolidatedEntities
us-gaap:Liabilities

us-gaap:LiabilitiesAndStockholdersEquity
dei:LegalEntity

us-gaap:StockholdersEquity
dei:LegalEntity
us-gaap:StatementEquityComponents, dei:LegalEntity

us-gaap:AssetsCurrent
dei:LegalEntity

us-gaap:CashAndCashEquivalentsAtCarryingValue
dei:LegalEntity
dte:InvestmentsByConsolidatedAndNonconsolidatedEntities

us-gaap:AccountsReceivableNetCurrent
dei:LegalEntity
dte:InvestmentsByConsolidatedAndNonconsolidatedEntities
dte:InvestmentsByConsolidatedAndNonconsolidatedEntities
us-gaap:InventoryNet

us-gaap:InventoryRawMaterialsAndSupplies
dei:LegalEntity

us-gaap:OtherAssetsCurrent
dei:LegalEntity

us-gaap:PropertyPlantAndEquipmentGross
dei:LegalEntity

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
dei:LegalEntity

us-gaap:PropertyPlantAndEquipmentNet
dei:LegalEntity
dte:InvestmentsByConsolidatedAndNonconsolidatedEntities
us-gaap:CounterpartyName, us-gaap:StatementBusinessSegments

us-gaap:LongTermInvestments
dei:LegalEntity

us-gaap:Goodwill
us-gaap:BusinessAcquisition, us-gaap:StatementBusinessSegments

us-gaap:IntangibleAssetsNetExcludingGoodwill
dei:LegalEntity
dte:InvestmentsByConsolidatedAndNonconsolidatedEntities
us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:OtherAssetsNoncurrent
dei:LegalEntity

us-gaap:LiabilitiesCurrent
dei:LegalEntity

us-gaap:AccountsPayableCurrent
dte:InvestmentsByConsolidatedAndNonconsolidatedEntities
us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent

us-gaap:OtherLiabilitiesCurrent
dei:LegalEntity

us-gaap:DividendsPayableCurrent
dei:LegalEntity
us-gaap:LongTermDebtNoncurrent

us-gaap:MinorityInterest

us-gaap:OtherLiabilitiesNoncurrent
dei:LegalEntity

us-gaap:StockholdersEquity
dei:LegalEntity
us-gaap:StatementEquityComponents, dei:LegalEntity

us-gaap:CommonStockValue
dei:LegalEntity

us-gaap:RetainedEarningsAccumulatedDeficit
dei:LegalEntity

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:NetCashProvidedByUsedInOperatingActivities
dei:LegalEntity

us-gaap:NetCashProvidedByUsedInInvestingActivities
dei:LegalEntity

us-gaap:NetCashProvidedByUsedInFinancingActivities
dei:LegalEntity

us-gaap:NetCashProvidedByUsedInOperatingActivities
dei:LegalEntity

us-gaap:NetIncomeLoss
dei:LegalEntity
us-gaap:StatementBusinessSegments
us-gaap:StatementEquityComponents, dei:LegalEntity

us-gaap:ProfitLoss
us-gaap:StatementEquityComponents

us-gaap:DepreciationDepletionAndAmortization
dei:LegalEntity

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet
dei:LegalEntity

us-gaap:IncreaseDecreaseInInventories
dei:LegalEntity

us-gaap:NetCashProvidedByUsedInInvestingActivities
dei:LegalEntity
dei:LegalEntity
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:NetCashProvidedByUsedInFinancingActivities
dei:LegalEntity

us-gaap:ProceedsFromIssuanceOfLongTermDebt
dei:LegalEntity
us-gaap:CreditFacility, us-gaap:DebtInstrument

us-gaap:RepaymentsOfLongTermDebt
dei:LegalEntity

us-gaap:RepaymentsOfLongTermDebt
dei:LegalEntity

us-gaap:EffectiveIncomeTaxRateContinuingOperations
dei:LegalEntity

us-gaap:UnrecognizedTaxBenefits
dei:LegalEntity

us-gaap:OperatingLeaseRightOfUseAsset
dei:LegalEntity
us-gaap:CounterpartyName, us-gaap:StatementBusinessSegments

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
dei:LegalEntity
us-gaap:BusinessAcquisition, us-gaap:StatementBusinessSegments
dte:BusinessCombinationPurchaseofRenewableEnergyProjectAmountofPower

dte:EffectiveIncomeTaxRateReconciliationTaxCutsandJobsActof2017AmortizationofRegulatoryLiabilityPercent
dei:LegalEntity
us-gaap:EnvironmentalRemediationContingency
dte:EnvironmentalContingenciesGoaltoreduceCarbonEmissionsPercentage
us-gaap:FairValueByMeasurementFrequency, dei:LegalEntity
dte:FairValueAssetsMeasuredonRecurringBasisChangeinUnrealizedGainLossincludedinregulatoryassetsandliabilities
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementFrequency
dte:FairValueNetDerivativeAssetLiabilityMeasuredonRecurringBasisUnobservableInputsReconciliationGainsLossesRecordedInRegulatoryAssetsLiabilities
us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency, dei:LegalEntity
us-gaap:ScheduleOfSharesSubjectToMandatoryRedemptionBySettlementTerms, us-gaap:SubsequentEventType
dte:FinancialInstrumentsSubjecttoMandatoryRedemptionContractAdjustmentRate

dte:GainLossonSaleofAssetsandAssetImpairmentChargesnet
us-gaap:CounterpartyName, us-gaap:GuaranteeObligationsByNature
dte:GuarantorObligationsMaximumPercentageExposure
us-gaap:CounterpartyName, us-gaap:GuaranteeObligationsByNature, dei:LegalEntity

dte:IncomefromREFinvestees

dte:IncomeonContractServices
dei:LegalEntity

dte:IncreaseDecreaseinEffectiveTaxRatefromPriorYearPercent
dei:LegalEntity

dte:IncreaseDecreaseinGasInventoryEqualization
dei:LegalEntity
dte:IncreaseDecreaseinPensionPlanObligationsAffiliates
dei:LegalEntity
dte:IncreaseDecreaseinPostretirementObligationsAffiliates

dte:IncreaseDecreaseinPrepaidPostretirementCosts

dte:Nuclearfuelamortization
dei:LegalEntity
dei:LegalEntity
dte:NumberOfFormerMgpSites
us-gaap:EnvironmentalRemediationSite, dei:LegalEntity

dte:OtherMiscellaneousNonoperatingIncome
dei:LegalEntity

dte:PlantAndEquipmentExpendituresNonUtility

dte:PlantAndEquipmentExpendituresUtility
dei:LegalEntity
dte:ProceedsfromRepaymentsofShorttermDebtAffiliate
dei:LegalEntity
dte:ProceedsfromRepaymentsofShorttermDebtOther

dte:RegulatedandUnregulatedOperatingExpenseDepreciationandAmortization

dte:RegulatedandUnregulatedOperatingExpenseMaintenanceandOperations

dte:UnregulatedOperatingExpenseProductsandServices
us-gaap:RelatedPartyTransactionsByRelatedParty, dei:LegalEntity
us-gaap:AllocatedShareBasedCompensationExpense
us-gaap:StatementScenario, us-gaap:BusinessAcquisition, us-gaap:StatementBusinessSegments
us-gaap:BusinessCombinationConsiderationTransferred1

us-gaap:CapitalExpendituresIncurredButNotYetPaid
dei:LegalEntity

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
dei:LegalEntity

us-gaap:CommonStockDividendsPerShareDeclared
us-gaap:FairValueByAssetClass, dei:LegalEntity
us-gaap:DebtSecuritiesAvailableForSaleRealizedGain
us-gaap:FairValueByAssetClass, dei:LegalEntity
us-gaap:DebtSecuritiesAvailableForSaleRealizedLoss

us-gaap:DeferredIncomeTaxesAndTaxCredits
dei:LegalEntity
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses
us-gaap:RetirementPlanType, dei:LegalEntity
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit
us-gaap:RetirementPlanType, dei:LegalEntity
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets
us-gaap:RetirementPlanType, dei:LegalEntity
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanInterestCost
us-gaap:RetirementPlanType, dei:LegalEntity
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost
us-gaap:RetirementPlanType, dei:LegalEntity
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanServiceCost
us-gaap:RetirementPlanType, dei:LegalEntity
us-gaap:StatementBusinessSegments
us-gaap:DerivativeGainLossOnDerivativeNet

us-gaap:DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet
us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeNonmonetaryNotionalAmountEnergyMeasure

us-gaap:DirectFinancingLeaseInterestIncome

us-gaap:DividendsCommonStockCash
dei:LegalEntity
us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents, dei:LegalEntity

us-gaap:EffectiveIncomeTaxRateReconciliationTaxCreditsOther
dei:LegalEntity

us-gaap:EquityMethodInvestmentDividendsOrDistributions

us-gaap:EquitySecuritiesFvNiGainLoss
dei:LegalEntity
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss
us-gaap:FairValueByMeasurementFrequency
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings
us-gaap:FairValueByMeasurementFrequency
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSettlements
us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency, dei:LegalEntity
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationTransfersIntoLevel3
us-gaap:FairValueByMeasurementFrequency
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationTransfersOutOfLevel3
us-gaap:FairValueByMeasurementFrequency

us-gaap:FinancingReceivableAllowanceForCreditLossesRecovery
dei:LegalEntity
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs
dei:LegalEntity
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:ScheduleOfSharesSubjectToMandatoryRedemptionBySettlementTerms, us-gaap:SubsequentEventType
us-gaap:ForwardContractIndexedToIssuersEquityForwardRate
us-gaap:FairValueByAssetClass
us-gaap:GainLossOnInvestments

us-gaap:GainLossOnSalesOfAssetsAndAssetImpairmentCharges

us-gaap:IncomeLossFromEquityMethodInvestments

us-gaap:IncreaseDecreaseInAccountsAndOtherReceivables
dei:LegalEntity

us-gaap:IncreaseDecreaseInAccountsPayable
dei:LegalEntity

us-gaap:IncreaseDecreaseInDerivativeAssetsAndLiabilities

us-gaap:IncreaseDecreaseInPensionPlanObligations

us-gaap:IncreaseDecreaseInRegulatoryAssetsAndLiabilities
dei:LegalEntity

us-gaap:InvestmentIncomeInterest
dei:LegalEntity

us-gaap:NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent

us-gaap:OperatingLeaseLeaseIncome
us-gaap:StatementBusinessSegments

us-gaap:OperatingLeaseLeaseIncomeLeasePayments

us-gaap:OperatingLeaseVariableLeaseIncome

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax
dei:LegalEntity
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax

us-gaap:OtherNonoperatingExpense
dei:LegalEntity

us-gaap:OtherNonoperatingIncome
dei:LegalEntity

us-gaap:ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic

us-gaap:ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDiluted

us-gaap:PaymentsForProceedsFromOtherInvestingActivities
dei:LegalEntity

us-gaap:PaymentsOfDividendsCommonStock
dei:LegalEntity

us-gaap:PaymentsToAcquireBusinessesGross
us-gaap:BusinessAcquisition, us-gaap:StatementBusinessSegments
us-gaap:BusinessAcquisition, us-gaap:StatementBusinessSegments, dei:LegalEntity
us-gaap:BusinessAcquisition, us-gaap:StatementBusinessSegments, us-gaap:SubsequentEventType, dei:LegalEntity

us-gaap:PaymentsToAcquireEquityMethodInvestments

us-gaap:PaymentsToAcquireNotesReceivable
dei:LegalEntity

us-gaap:PaymentsToAcquireOtherInvestments
dei:LegalEntity

us-gaap:PaymentsToMinorityShareholders
us-gaap:RetirementPlanType, dei:LegalEntity
us-gaap:PensionExpense

us-gaap:ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital

us-gaap:ProceedsFromMinorityShareholders

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities
dei:LegalEntity

us-gaap:ProceedsFromSaleAndMaturityOfOtherInvestments
dei:LegalEntity
us-gaap:FairValueByAssetClass, dei:LegalEntity
us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt

us-gaap:ProceedsFromSaleOfOtherProductiveAssets

us-gaap:ProvisionForLoanLossesExpensed
dei:LegalEntity
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity
dei:LegalEntity

us-gaap:RegulatedAndUnregulatedOperatingRevenue
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:ContractWithCustomerSalesChannel, us-gaap:StatementBusinessSegments
us-gaap:ContractWithCustomerSalesChannel, us-gaap:StatementBusinessSegments, dei:LegalEntity
us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
us-gaap:StatementBusinessSegments
us-gaap:StatementBusinessSegments, dei:LegalEntity

us-gaap:RegulatedOperatingRevenue
dei:LegalEntity
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:StockholdersEquityOther
us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents
us-gaap:StockholdersEquityOtherShares

us-gaap:TaxesExcludingIncomeAndExciseTaxes
dei:LegalEntity

us-gaap:UnregulatedOperatingRevenue
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
dei:LegalEntity
us-gaap:UtilitiesOperatingExpenseDepreciationAndAmortization
dei:LegalEntity
us-gaap:UtilitiesOperatingExpenseMaintenanceAndOperations

us-gaap:UtilitiesOperatingExpenseProductsAndServices
dei:LegalEntity
dte:InvestmentsByConsolidatedAndNonconsolidatedEntities
us-gaap:VariableInterestEntityOwnershipPercentage

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment

dei:EntityCommonStockSharesOutstanding
us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType
dei:EntityNumberOfEmployees
us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType, dei:LegalEntity
us-gaap:BusinessAcquisition, us-gaap:StatementBusinessSegments
dte:BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedCurrentAssetsLiabilitiesNet

dte:CashCollateralPostedReceivedNet
us-gaap:FairValueByAssetClass, dei:LegalEntity
dte:DecommissioningFundInvestmentsAccumulatedGrossUnrealizedGainBeforeTax
us-gaap:FairValueByAssetClass, us-gaap:FinancialInstrument, dei:LegalEntity
us-gaap:FairValueByAssetClass, dei:LegalEntity
dte:DecommissioningFundInvestmentsAccumulatedGrossUnrealizedLossBeforeTax
us-gaap:FairValueByAssetClass, us-gaap:FinancialInstrument, dei:LegalEntity
dei:LegalEntity
dte:DefinedBenefitPensionPlanLiabilitiesNoncurrentAffiliates
us-gaap:FairValueByMeasurementFrequency
dte:DerivativeAssetLiabilityFairValueGrossLiabilityAssetandObligationtoReturnCashandRighttoReclaimCashOffset

dte:EstimatedCapitalExpendituresandContributionsToEquityMethodInvestees
dei:LegalEntity
us-gaap:ConsolidatedEntities, us-gaap:CreditFacility
dte:FinancingAgreementAmountOutstanding
us-gaap:ConsolidatedEntities, us-gaap:CreditFacility
dte:FinancingAgreementMaximumBorrowingCapacity
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
dte:FinancingReceivableOriginatedTwoorMoreYearsbeforeLatestFiscalYear
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment

dte:GasInventoryEqualization

dte:LettersofCreditReceivedUsedtoOffsetNetDerivativeAssets

dte:Lettersofcreditthatcouldbeusedtooffsetnetderivativeliabilities
dei:LegalEntity
dte:OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrentAffiliates

dte:PrepaidPostretirementCosts
dei:LegalEntity
dte:PrepaidPostretirementCostsAffiliates
dte:InvestmentsByConsolidatedAndNonconsolidatedEntities
dte:VariableInterestEntityFutureFundingCommitments
dei:LegalEntity
us-gaap:AccountsPayableOtherCurrent
dei:LegalEntity
us-gaap:AccountsPayableRelatedPartiesCurrent
dei:LegalEntity
us-gaap:AccountsReceivableRelatedPartiesCurrent
dei:LegalEntity
us-gaap:AccrualForEnvironmentalLossContingenciesGross

us-gaap:AccruedEnvironmentalLossContingenciesNoncurrent
dei:LegalEntity

us-gaap:AccumulatedDeferredInvestmentTaxCredit
dei:LegalEntity

us-gaap:AdditionalCollateralAggregateFairValue

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent
dei:LegalEntity
us-gaap:FairValueByAssetClass, dei:LegalEntity
us-gaap:AlternativeInvestment

us-gaap:AssetRetirementObligationsNoncurrent
dei:LegalEntity
us-gaap:FairValueByAssetClass, dei:LegalEntity
us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
us-gaap:FairValueByAssetClass, dei:LegalEntity
us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
us-gaap:FairValueByAssetClass, dei:LegalEntity
us-gaap:AvailableForSaleSecuritiesDebtSecuritiesNoncurrent
us-gaap:StatementGeographical, us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisitionPercentageOfVotingInterestsAcquired

us-gaap:BusinessCombinationContingentConsiderationLiabilityCurrent
us-gaap:BusinessAcquisition, us-gaap:StatementBusinessSegments
us-gaap:BusinessAcquisition, us-gaap:FiniteLivedIntangibleAssetsByMajorClass, us-gaap:StatementBusinessSegments
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles
us-gaap:BusinessAcquisition, us-gaap:StatementBusinessSegments
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet
us-gaap:BusinessAcquisition, us-gaap:StatementBusinessSegments
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment
us-gaap:BalanceSheetLocation, us-gaap:FairValueByMeasurementFrequency
us-gaap:CashAndCashEquivalentsFairValueDisclosure
us-gaap:BalanceSheetLocation, us-gaap:FairValueByMeasurementFrequency, dei:LegalEntity
us-gaap:FairValueByAssetClass, dei:LegalEntity
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, dei:LegalEntity
us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency, dei:LegalEntity

us-gaap:ContractWithCustomerLiability
us-gaap:CreditFacility, us-gaap:DebtInstrument
us-gaap:DebtInstrumentCarryingAmount
us-gaap:CreditFacility, us-gaap:DebtInstrument, us-gaap:SubsequentEventType, dei:LegalEntity

us-gaap:DecommissioningFundInvestments
dei:LegalEntity
us-gaap:FairValueByAssetClass, dei:LegalEntity
us-gaap:FairValueByAssetClass, us-gaap:PublicUtility, dei:LegalEntity
us-gaap:PropertyPlantAndEquipmentByType
us-gaap:DecommissioningLiabilityNoncurrent

us-gaap:DeferredIncomeTaxLiabilitiesNet
dei:LegalEntity

us-gaap:DefinedBenefitPensionPlanLiabilitiesNoncurrent
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsRemainderOfFiscalYear
us-gaap:RetirementPlanType, dei:LegalEntity
us-gaap:BalanceSheetLocation
us-gaap:DerivativeAssetCollateralObligationToReturnCashOffset
us-gaap:BalanceSheetLocation
us-gaap:DerivativeAssetFairValueGrossLiability

us-gaap:DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset
us-gaap:BalanceSheetLocation, us-gaap:FairValueByMeasurementFrequency
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency
us-gaap:Range, us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:MeasurementInputType, us-gaap:ValuationTechnique
us-gaap:DerivativeAssetLiabilityNetMeasurementInput

us-gaap:DerivativeAssetsCurrent
us-gaap:BalanceSheetLocation

us-gaap:DerivativeAssetsNoncurrent
us-gaap:BalanceSheetLocation

us-gaap:DerivativeCollateralObligationToReturnCash

us-gaap:DerivativeCollateralRightToReclaimCash

us-gaap:DerivativeLiabilitiesCurrent
us-gaap:BalanceSheetLocation

us-gaap:DerivativeLiabilitiesNoncurrent
us-gaap:BalanceSheetLocation
us-gaap:BalanceSheetLocation
us-gaap:DerivativeLiabilityCollateralRightToReclaimCashOffset
us-gaap:BalanceSheetLocation
us-gaap:DerivativeLiabilityFairValueGrossAsset

us-gaap:DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset
us-gaap:BalanceSheetLocation, us-gaap:FairValueByMeasurementFrequency
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency

us-gaap:EnergyRelatedInventory
dei:LegalEntity

us-gaap:EquityMethodInvestments
dte:InvestmentsByConsolidatedAndNonconsolidatedEntities
us-gaap:InvestmentType
us-gaap:FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueNetAssetLiability
us-gaap:FairValueByMeasurementFrequency
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs
us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency, dei:LegalEntity

us-gaap:FinanceLeaseLiabilityNoncurrent
dei:LegalEntity

us-gaap:FinancingReceivableAllowanceForCreditLosses
dei:LegalEntity
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableOriginatedInCurrentFiscalYear
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:CounterpartyName, us-gaap:GuaranteeObligationsByNature
us-gaap:GuaranteeObligationsMaximumExposure
us-gaap:GuaranteeObligationsByNature
us-gaap:RelatedPartyTransactionsByRelatedParty, dei:LegalEntity
us-gaap:IncomeTaxReceivable

us-gaap:InterestPayableCurrent
dei:LegalEntity

us-gaap:JuniorSubordinatedLongTermNotes

us-gaap:LineOfCredit
dei:LegalEntity
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:CreditFacility
us-gaap:CreditFacility
us-gaap:CreditFacility, dei:LegalEntity

us-gaap:LineOfCreditFacilityRemainingBorrowingCapacity
dei:LegalEntity
us-gaap:ConsolidatedEntities

us-gaap:LongTermDebtAndCapitalLeaseObligations
dei:LegalEntity

us-gaap:LongTermDebtAndCapitalLeaseObligationsCurrent
dei:LegalEntity
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:LongTermDebtFairValue
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis, dei:LegalEntity
us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementBasis, dei:LegalEntity

us-gaap:NotesAndLoansReceivableNetNoncurrent
dte:InvestmentsByConsolidatedAndNonconsolidatedEntities
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:NotesPayableFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis, dei:LegalEntity
us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementBasis, dei:LegalEntity
dei:LegalEntity
us-gaap:NotesPayableRelatedPartiesClassifiedCurrent
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:NotesReceivableFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis, dei:LegalEntity
us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementBasis, dei:LegalEntity
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:NotesReceivableGross
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, dei:LegalEntity
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment, dei:LegalEntity

us-gaap:OperatingLeaseLiabilityCurrent
dei:LegalEntity

us-gaap:OperatingLeaseLiabilityNoncurrent
dei:LegalEntity

us-gaap:OtherAssetsMiscellaneousNoncurrent
dei:LegalEntity
dte:InvestmentsByConsolidatedAndNonconsolidatedEntities
us-gaap:OtherLiabilities

us-gaap:OtherLongTermDebtNoncurrent

us-gaap:OtherLongTermInvestments
dei:LegalEntity

us-gaap:OtherReceivablesNetCurrent
dei:LegalEntity
dei:LegalEntity
us-gaap:OtherShortTermBorrowings

us-gaap:OtherSundryLiabilitiesNoncurrent
dei:LegalEntity
dei:LegalEntity
us-gaap:PrepaidTaxes
dei:LegalEntity
us-gaap:RatioOfIndebtednessToNetCapital1
us-gaap:ConsolidatedEntities

us-gaap:RegulatoryAssetsCurrent
dei:LegalEntity

us-gaap:RegulatoryAssetsNoncurrent
dei:LegalEntity

us-gaap:RegulatoryLiabilityCurrent
dei:LegalEntity

us-gaap:RegulatoryLiabilityNoncurrent
dei:LegalEntity

us-gaap:RestrictedCashAndCashEquivalentsAtCarryingValue

us-gaap:RevenueRemainingPerformanceObligation
us-gaap:ContractWithCustomerBasisOfPricing
us-gaap:ContractWithCustomerBasisOfPricing, dei:LegalEntity
us-gaap:Range, us-gaap:StatementScenario, us-gaap:ScheduleOfSharesSubjectToMandatoryRedemptionBySettlementTerms
us-gaap:SharesSubjectToMandatoryRedemptionSettlementTermsNumberOfShares

us-gaap:ShortTermBorrowings
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:ShorttermDebtFairValue
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis, dei:LegalEntity
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis, us-gaap:RelatedPartyTransactionsByRelatedParty, dei:LegalEntity
us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementBasis, dei:LegalEntity
us-gaap:FairValueByMeasurementBasis, us-gaap:RelatedPartyTransactionsByRelatedParty, dei:LegalEntity

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents

Tables

  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:CommonStockValue ██▂▂▂▂▁▁▁523552334370434443244245423242054163
 us-gaap:CommonStockValue dei:LegalEntity dte:DTEElectric██▆▆▆▆▁▁▁481148114631463146314631430643064306
us-gaap:CommonStockSharesIssued ██▂▂▂▁▁▁▁192192183183183181181181181
 us-gaap:CommonStockSharesIssued dei:LegalEntity dte:DTEElectric▄▄▄▄▄▄▄▄▄138138138138138138138138138
us-gaap:CommonStockSharesOutstanding ██▂▂▂▁▁▁▁192192183183183181181181181
 us-gaap:CommonStockSharesOutstanding dei:LegalEntity dte:DTEElectric▄▄▄▄▄▄▄▄▄138138138138138138138138138
 us-gaap:CommonStockSharesOutstanding us-gaap:StatementEquityComponents us-gaap:CommonStock██▂▂▂▁▁▁▁192192183183183181181181181
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding 192NA184184183NA182181180
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic 192NA183183182NA182181180
us-gaap:EarningsPerShareBasic ▆▃▅▁█▁▆▃▇1.771.41.740.992.21.051.841.292.01
us-gaap:EarningsPerShareDiluted ▅▃▅▁█▁▆▃▇1.761.41.730.992.191.051.841.292.0
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:CostsAndExpenses ▁▃▂▂▅█▆▄▇247627332669258829723418312128303249
 us-gaap:CostsAndExpenses dei:LegalEntity dte:DTEElectric▃▅▆▂▃█▆▃▁998105610799671009112810771007952
us-gaap:OperatingIncomeLoss █▄▅▁█▂▅▂▇546415450300542332429329504
 us-gaap:OperatingIncomeLoss dei:LegalEntity dte:DTEElectric▂▂█▂▂▁█▄▃214224440223226168444269253
us-gaap:InterestExpense ██▆▄▄▃▂▁▁175173162154152147142135135
 us-gaap:InterestExpense dei:LegalEntity dte:DTEElectric█▇▇▆▅▄▄▂▁817980787673736968
us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax ▁▄▄▄█▁▄▁▄-10001-10-10
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest ▆▄▆▂█▁▆▃▇391298364200462173369255419
 us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest dei:LegalEntity dte:DTEElectric▂▃█▃▃▁█▄▃10715436615817677386207187
us-gaap:NonoperatingIncomeExpense ▁▄▆▅▇▁█▇▆-155-117-86-100-80-159-60-74-85
us-gaap:IncomeTaxExpenseBenefit ▇▅▆▄▇▁▅▄█4930472154-23341968
 us-gaap:IncomeTaxExpenseBenefit dei:LegalEntity dte:DTEElectric▁▂▆▂▃▂█▄▄132559252921814447
us-gaap:ProfitLoss ▆▄▅▁█▂▆▃▆342268317179408196335236351
 us-gaap:ProfitLoss us-gaap:StatementEquityComponents us-gaap:RetainedEarnings340NA319182401191334234361
us-gaap:ComprehensiveIncomeNetOfTax ▆▄▅▁█▁▆▃▇343265319179403189337236358
 us-gaap:ComprehensiveIncomeNetOfTax dei:LegalEntity dte:DTEElectric▂▃█▃▄▁█▄▃9412930713314756305163143
us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest ▆▆▄▄█▇▆▆▁21-2-37512-10
us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest ▆▄▅▁█▂▆▃▆345266317176410194338238348
us-gaap:NetIncomeLoss ▆▄▅▁█▁▆▃▇340267319182401191334234361
 us-gaap:NetIncomeLoss dei:LegalEntity dte:DTEElectric▂▃█▃▄▁█▄▃9412930713314756305163140
 us-gaap:NetIncomeLoss us-gaap:StatementBusinessSegments dte:Electric94NA307133147NA305163140
 us-gaap:NetIncomeLoss us-gaap:StatementBusinessSegments dte:EnergyTrading34NA-14-632NA-13-531
 us-gaap:NetIncomeLoss us-gaap:StatementBusinessSegments dte:Gas121NA-388151NA-3014104
 us-gaap:NetIncomeLoss us-gaap:StatementBusinessSegments dte:GasStorageAndPipelines72NA605048NA666062
 us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents,dei:LegalEntity us-gaap:RetainedEarnings,dte:DTEElectric94NA307133147NA305163140
us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic ▆▄▅▁█▁▆▃▇339267318182400191333234360
us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted ▆▄▅▁█▁▆▃▇339267318182400191333234360
us-gaap:NetIncomeLossAttributableToNoncontrollingInterest ▆▆▄▄█▇▆▆▁21-2-37512-10
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:Assets █▇▄▃▃▃▂▁▁432324188238345368513643436288352923433033841
 us-gaap:Assets dei:LegalEntity dte:DTEElectric█▇▆▄▄▃▂▂▁251662458824111231772290022529219412163121255
 us-gaap:Liabilities dte:InvestmentsByConsolidatedAndNonconsolidatedEntities dte:VariableInterestEntityPrimaryBeneficiaryOtherRestricted█▁2120NANANANANANANA
 us-gaap:Liabilities dte:InvestmentsByConsolidatedAndNonconsolidatedEntities dte:VariableInterestEntityPrimaryBeneficiaryRestricted▁█2829NANANANANANANA
 us-gaap:Liabilities dte:InvestmentsByConsolidatedAndNonconsolidatedEntities dte:VariableInterestEntityPrimaryBeneficiarySGGRestricted▁█79NANANANANANANA
us-gaap:LiabilitiesAndStockholdersEquity █▇▄▃▃▃▂▁▁432324188238345368513643436288352923433033841
 us-gaap:LiabilitiesAndStockholdersEquity dei:LegalEntity dte:DTEElectric█▇▆▄▄▃▂▂▁251662458824111231772290022529219412163121255
us-gaap:StockholdersEquity █▇▄▃▃▂▂▁▁1182211672107401039610545102371020798449888
 us-gaap:StockholdersEquity dei:LegalEntity dte:DTEElectric██▇▅▅▅▃▁▁715471957010682668166793652763386290
 us-gaap:StockholdersEquity us-gaap:StatementEquityComponents,dei:LegalEntity us-gaap:AdditionalPaidInCapital,dte:DTEElectric██▆▆▆▆▁▁▁342534253245324532453245292029202920
 us-gaap:StockholdersEquity us-gaap:StatementEquityComponents,dei:LegalEntity us-gaap:RetainedEarnings,dte:DTEElectric▇██▅▅▄▅▂▁234323842379219521852162222120321984
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:AssetsCurrent █▄▃▁▂▆▄▂▃352630862985272628403260310328952957
 us-gaap:AssetsCurrent dei:LegalEntity dte:DTEElectric▂▁▆▂▅▆█▆▂138113571505140014891520158715091387
us-gaap:CashAndCashEquivalentsAtCarryingValue █▂▁▁▁▁▁▁▃55293766256718463164
us-gaap:AccountsReceivableNetCurrent ▂▅▁▁▆█▆▆▆148216421453143616831789169016901709
 us-gaap:AccountsReceivableNetCurrent dei:LegalEntity dte:DTEElectric▁▂▄▂▂▃█▆▃694729779715728750894849754
 us-gaap:InventoryNet dte:InvestmentsByConsolidatedAndNonconsolidatedEntities dte:VariableInterestEntityPrimaryBeneficiaryOtherRestricted█▁10174NANANANANANANA
 us-gaap:InventoryNet dte:InvestmentsByConsolidatedAndNonconsolidatedEntities dte:VariableInterestEntityPrimaryBeneficiaryRestricted█▁10174NANANANANANANA
us-gaap:InventoryRawMaterialsAndSupplies ▆▄▄█▆▅▃▁▁413386393431409405377362360
 us-gaap:InventoryRawMaterialsAndSupplies dei:LegalEntity dte:DTEElectric▄▄█▇▇▄▂▁▂280280284283283279277276277
us-gaap:OtherAssetsCurrent █▅▁▃▆▅█▂▅268209136178231221272162221
 us-gaap:OtherAssetsCurrent dei:LegalEntity dte:DTEElectric▂▇▃█▂█▁▆▁297835892789157018
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:PropertyPlantAndEquipmentGross █▆▄▃▂▁▂▂▁361463507233473328343221431810326003212231656
 us-gaap:PropertyPlantAndEquipmentGross dei:LegalEntity dte:DTEElectric█▆▅▄▂▁▄▃▂249502427923917235372310022747236832341023098
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment ▂▁▁▆▄▃█▇▇991097559715105371035010160109881088310786
 us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment dei:LegalEntity dte:DTEElectric▂▁▁▅▅▄██▇681067066697757474427310815681018023
us-gaap:PropertyPlantAndEquipmentNet █▇▅▃▂▂▂▁▁262362531723758222972186421650216122123920870
 us-gaap:PropertyPlantAndEquipmentNet dei:LegalEntity dte:DTEElectric█▇▆▃▂▂▂▂▁181401757317220159631565815437155271530915075
us-gaap:LongTermInvestments ▆█▇▆▆▅▅▂▁353437883669356635193368343630412852
 us-gaap:LongTermInvestments dei:LegalEntity dte:DTEElectric▃█▆▆▄▁▅▄▄147416991613159715441412156515191517
us-gaap:Goodwill ██▁▁▁▁▁▁▁246624642293229322932293229322932293
us-gaap:IntangibleAssetsNetExcludingGoodwill ██▁24022393940NANA849NANANA
 us-gaap:FiniteLivedIntangibleAssetsNet dte:InvestmentsByConsolidatedAndNonconsolidatedEntities dte:VariableInterestEntityPrimaryBeneficiaryRestricted▁█538542NANANANANANANA
 us-gaap:FiniteLivedIntangibleAssetsNet dte:InvestmentsByConsolidatedAndNonconsolidatedEntities dte:VariableInterestEntityPrimaryBeneficiarySGGRestricted▁█538542NANANANANANANA
us-gaap:OtherAssetsNoncurrent ██▁▁▁▁▁▁▁99369691195185158160152148159
 us-gaap:OtherAssetsNoncurrent dei:LegalEntity dte:DTEElectric██▁▁▁▁▁▁▁41713959159152135121117115123
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:LiabilitiesCurrent ▇▇▆▆▆█▁▂▂397239973865365436474438211724992541
 us-gaap:LiabilitiesCurrent dei:LegalEntity dte:DTEElectric▅█▆▃▁▃▁▁▃137118431575103881610778768201104
us-gaap:AccountsPayableCurrent ▃▄▃▃▂█▅▃▁1028107610331051981132911601059920
 us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent dte:InvestmentsByConsolidatedAndNonconsolidatedEntities dte:VariableInterestEntityPrimaryBeneficiaryOtherRestricted█▁1413NANANANANANANA
 us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent dte:InvestmentsByConsolidatedAndNonconsolidatedEntities dte:VariableInterestEntityPrimaryBeneficiarySGGRestricted▁█12NANANANANANANA
us-gaap:OtherLiabilitiesCurrent ▃█▂▁▂█▅▁▁437504419405423509462408411
 us-gaap:OtherLiabilitiesCurrent dei:LegalEntity dte:DTEElectric███▇▃▇▇▁▆15015515413810113914375133
us-gaap:DividendsPayableCurrent ▂▂▁█▁▁▁▇▁195195173346173172161321160
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
 us-gaap:LongTermDebtNoncurrent dei:LegalEntity dte:DTEElectric█▃▅▆▆▃▃▃▁763865486847717871786538653765376018
us-gaap:MinorityInterest ▁▁▁▁█████166164164173475480483474475
us-gaap:OtherLiabilitiesNoncurrent ██▁▁▁▁▁▁▁1024610114337333334364285288293
 us-gaap:OtherLiabilitiesNoncurrent dei:LegalEntity dte:DTEElectric██▁▁▁▁▁▁▁9000899882868588767674
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:StockholdersEquity █▇▄▃▃▂▂▁▁1182211672107401039610545102371020798449888
 us-gaap:StockholdersEquity dei:LegalEntity dte:DTEElectric██▇▅▅▅▃▁▁715471957010682668166793652763386290
 us-gaap:StockholdersEquity us-gaap:StatementEquityComponents,dei:LegalEntity us-gaap:AdditionalPaidInCapital,dte:DTEElectric██▆▆▆▆▁▁▁342534253245324532453245292029202920
 us-gaap:StockholdersEquity us-gaap:StatementEquityComponents,dei:LegalEntity us-gaap:RetainedEarnings,dte:DTEElectric▇██▅▅▄▅▂▁234323842379219521852162222120321984
us-gaap:CommonStockValue ██▂▂▂▂▁▁▁523552334370434443244245423242054163
 us-gaap:CommonStockValue dei:LegalEntity dte:DTEElectric██▆▆▆▆▁▁▁481148114631463146314631430643064306
us-gaap:RetainedEarningsAccumulatedDeficit █▇▆▄▅▃▃▁▂673265876516619863646100609357605848
 us-gaap:RetainedEarningsAccumulatedDeficit dei:LegalEntity dte:DTEElectric▇██▅▅▄▅▂▁234323842379219521852162222120321984
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▂▁▁▁▂██▇▇-145-148-146-146-143-120-118-121-123
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities █▄▁▂▄▂▂▂▅1061748534615752633614595838
 us-gaap:NetCashProvidedByUsedInOperatingActivities dei:LegalEntity dte:DTEElectric▅█▆▂▁▆█▂▁474552491344322475560362323
us-gaap:NetCashProvidedByUsedInInvestingActivities ▆▁▇██▇▇▇█-1342-3174-1044-766-748-1011-956-794-586
us-gaap:NetCashProvidedByUsedInFinancingActivities ▄█▃▂▁▂▂▂▁8642443524152-1935036099-155
 us-gaap:NetCashProvidedByUsedInFinancingActivities dei:LegalEntity dte:DTEElectric█▃▄▄▇▆▁▄▃3992661116309265-1278549
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities █▄▁▂▄▂▂▂▅1061748534615752633614595838
 us-gaap:NetCashProvidedByUsedInOperatingActivities dei:LegalEntity dte:DTEElectric▅█▆▂▁▆█▂▁474552491344322475560362323
us-gaap:NetIncomeLoss ▆▄▅▁█▁▆▃▇340267319182401191334234361
 us-gaap:NetIncomeLoss dei:LegalEntity dte:DTEElectric▂▃█▃▄▁█▄▃9412930713314756305163140
 us-gaap:NetIncomeLoss us-gaap:StatementBusinessSegments dte:Electric94NA307133147NA305163140
 us-gaap:NetIncomeLoss us-gaap:StatementBusinessSegments dte:EnergyTrading34NA-14-632NA-13-531
 us-gaap:NetIncomeLoss us-gaap:StatementBusinessSegments dte:Gas121NA-388151NA-3014104
 us-gaap:NetIncomeLoss us-gaap:StatementBusinessSegments dte:GasStorageAndPipelines72NA605048NA666062
 us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents,dei:LegalEntity us-gaap:RetainedEarnings,dte:DTEElectric94NA307133147NA305163140
us-gaap:ProfitLoss ▆▄▅▁█▂▆▃▆342268317179408196335236351
 us-gaap:ProfitLoss us-gaap:StatementEquityComponents us-gaap:RetainedEarnings340NA319182401191334234361
us-gaap:DepreciationDepletionAndAmortization █▇▅▄▃▃▁▁▂353340322305296298273272281
 us-gaap:DepreciationDepletionAndAmortization dei:LegalEntity dte:DTEElectric█▇▆▄▃▃▁▁▂258252244229221220202202212
us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet ▄▄▇▆█▁▇▅▅-104-965721131-31237-76-62
us-gaap:IncreaseDecreaseInInventories ▄▄▆█▁▆▇▆▁-55-5441161-207439378-182
 us-gaap:IncreaseDecreaseInInventories dei:LegalEntity dte:DTEElectric▅▄▄█▁▆▃▆▁183263-5128-1926-50
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities ▆▁▇██▇▇▇█-1342-3174-1044-766-748-1011-956-794-586
 us-gaap:PaymentsToAcquirePropertyPlantAndEquipment dei:LegalEntity dte:DTEElectric█▄▃▃▃▆▂▂▁871589538542531741423455370
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities ▄█▃▂▁▂▂▂▁8642443524152-1935036099-155
 us-gaap:NetCashProvidedByUsedInFinancingActivities dei:LegalEntity dte:DTEElectric█▃▄▄▇▆▁▄▃3992661116309265-1278549
us-gaap:ProceedsFromIssuanceOfLongTermDebt ██▁▆▅▁▇▄▁10921073-5794644-19135200
 us-gaap:ProceedsFromIssuanceOfLongTermDebt dei:LegalEntity dte:DTEElectric█▁▁▁▅▁▁▄▁109200-1644-105200
us-gaap:RepaymentsOfLongTermDebt ▄█▁▁▁▁▁30082100003NANA
 us-gaap:RepaymentsOfLongTermDebt dei:LegalEntity dte:DTEElectric300NANANA00NANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:RepaymentsOfLongTermDebt ▄█▁▁▁▁▁30082100003NANA
 us-gaap:RepaymentsOfLongTermDebt dei:LegalEntity dte:DTEElectric300NANANA00NANANA

Common Stock Value

us-gaap:CommonStockValue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-31
Value523552334370434443244245423242054163398939783968395840304137412941184123411741104093390439003896389439073885376236833587356735493453341734183415342834403422338832573175
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets12.112.511.411.811.911.712.012.212.311.812.012.212.312.614.014.414.414.314.414.514.614.014.814.914.915.114.814.514.213.613.813.613.413.113.813.914.013.814.114.013.512.9

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value4811481146314631463146314306430643064306420642064206420640864086408640864086408637863786
Percentage of CommonStockValue91.991.9106.0106.6107.1109.1101.7102.4103.4107.9105.7106.0106.3104.498.899.099.299.199.299.492.597.0
Percentage of Assets11.111.512.112.612.712.812.212.512.712.812.712.913.113.113.914.214.314.214.314.413.513.5
Percentage of Assets dte:DTEElectric19.119.619.220.020.220.619.619.920.320.320.020.320.520.520.220.720.920.921.021.320.120.3

Common Stock Par Or Stated Value Per Share

Common Stock Shares Issued

us-gaap:CommonStockSharesIssued



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-31
Value192192183183183181181181181179179179179179179179179179179179179176176176177177176174173172172171170169169169169169169168165163
Percentage of CommonStockSharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value138138138138138138138138138138138138138138138138138138138138138138
Percentage of CommonStockSharesIssued72.072.175.675.675.776.276.276.376.477.377.377.377.377.377.377.377.377.277.277.277.378.3

Common Stock Shares Outstanding

us-gaap:CommonStockSharesOutstanding



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-31
Value192192183183183181181181181179179179179179179179179179179179179176176176177177176174173172172171170169169169169169169168165163
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value138138138138138138138138138138138138138138138138138138138138138138
Percentage of CommonStockSharesOutstanding72.072.175.675.675.776.276.276.376.477.377.377.377.377.377.377.377.377.277.277.277.378.3

us-gaap:StatementEquityComponents

us-gaap:CommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-312007-12-312006-12-31
Value192192183183183181181181181179179179179179179179179179179179179176176176177177176174173172172171170169169169169169169168165163163177
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0

Common Stock Shares Authorized

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-03-31
Value192184184183182181180179179179180180180180179178177177177176175173172171170170170170170169166165163
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-03-31
Value192183183182182181180179179179179179179179179178177177177175174173172170170169169169169169166165163
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value1.771.41.740.992.21.051.841.292.011.61.510.992.230.731.880.841.380.451.470.611.531.680.880.71.840.71.130.61.350.471.320.860.910.881.081.191.040.90.970.511.380.720.920.511.09
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value1.761.41.730.992.191.051.841.292.01.61.510.992.230.731.880.841.370.451.470.611.531.680.880.71.840.71.130.61.340.01.310.860.910.881.071.191.040.90.960.511.380.720.920.511.09
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Income Loss From Continuing Operations Per Basic Share

Income Loss From Continuing Operations Per Diluted Share

Revenues

Sales Revenue Net

Operating Expenses

Costs And Expenses

us-gaap:CostsAndExpenses



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value2476273326692588297234183121283032492915282725522667257324212006218523532158206425232536235624493370205820022106179617311937186617402041175315361981
Percentage of CostsAndExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueRemainingPerformanceObligation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value998105610799671009112810771007952994103994695810561107950908973985933935984108510221139
Percentage of CostsAndExpenses40.338.640.437.434.033.034.535.629.334.136.837.135.941.045.747.441.641.445.645.237.138.846.141.733.8
Percentage of RevenueRemainingPerformanceObligation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueRemainingPerformanceObligation dte:DTEElectric0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Operating Income Loss

us-gaap:OperatingIncomeLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value546415450300542332429329504356418303569301507256381134440204461542239249560241329223410267410294312346399288390350386256472307332215395
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueRemainingPerformanceObligation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value214224440223226168444269253281395272217193501265245192400214268250272259271
Percentage of OperatingIncomeLoss39.254.097.874.341.750.6103.581.850.278.994.589.838.164.198.8103.564.3143.390.9104.958.146.1113.8104.048.4
Percentage of RevenueRemainingPerformanceObligation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueRemainingPerformanceObligation dte:DTEElectric0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Interest Expense

us-gaap:InterestExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-03-31
Value175173162154152147142135135132146133125131114114113109116115110106107106110106112109112109113120124126131142136140136143132
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueRemainingPerformanceObligation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value81798078767373696868687266686665656266676361656163
Percentage of InterestExpense46.345.749.450.650.049.751.451.150.451.546.654.152.851.957.957.057.556.956.958.357.357.560.757.557.3
Percentage of RevenueRemainingPerformanceObligation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueRemainingPerformanceObligation dte:DTEElectric0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Other Nonoperating Income Expense

Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-30
Value-10001-10-10-12000-1-120-21-3-1-11-11111-1-1-21
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax100.00.00.00.0100.0100.00.0100.00.0100.0100.00.00.00.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueRemainingPerformanceObligation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Income Loss From Continuing Operations

Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-30
Value39129836420046217336925541921433723250415243519532357366131396436178176485276151340337
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueRemainingPerformanceObligation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value10715436615817677386207187216337212163126441211197140333152211198211207
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest27.451.7100.579.038.144.5104.681.244.6100.9100.091.432.382.9101.4108.261.0245.691.0116.053.345.4118.5117.6
Percentage of RevenueRemainingPerformanceObligation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueRemainingPerformanceObligation dte:DTEElectric0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest

Income Loss From Continuing Operations Attributable To Noncontrolling Entity

Nonoperating Income Expense

us-gaap:NonoperatingIncomeExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-03-31
Value-155-117-86-100-80-159-60-74-85-142-81-71-65-149-72-61-58-77-74-73-65-106-61-73-75-53-72-70-72-77-81-113-112-109-135-128-125-126-132-112-119
Percentage of NonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueRemainingPerformanceObligation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value-107-70-74-65-50-91-58-62-66-65-58-60-54-67-60-54-48-52-67-62-57-52-61-52-57
Percentage of NonoperatingIncomeExpense69.059.886.065.062.557.296.783.877.645.871.684.583.145.083.388.582.867.590.584.987.749.1100.071.276.0
Percentage of RevenueRemainingPerformanceObligation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueRemainingPerformanceObligation dte:DTEElectric0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-03-31
Value4930472154-23341968-667457110281105083-2010226122135215015876441051087073101-24103599244116546997
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueRemainingPerformanceObligation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value13255925292181444778118745751156767048117537469757777
Percentage of IncomeTaxExpenseBenefit26.583.3125.5119.053.7-91.3238.2231.669.1-118.2159.5129.851.8182.1141.8152.084.3-240.0114.7203.860.751.1357.1154.048.7
Percentage of RevenueRemainingPerformanceObligation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueRemainingPerformanceObligation dte:DTEElectric0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Income Taxes Paid Net

Profit Loss

us-gaap:ProfitLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-03-31
Value3422683171794081963352363512802631753941243251452407726410527430115712632720010723523014715818520017815616687230121151179
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueRemainingPerformanceObligation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312011-03-312010-12-312010-03-31
Value2-2-37512-10-7-7-2-6-7-13-7-7-3-1-412121241
Percentage of ProfitLoss0.6-0.6-1.71.72.60.30.8-2.8-2.5-2.7-1.1-1.5-5.6-4.0-4.8-2.9-3.9-0.4-3.80.40.70.61.60.31.12.60.4
Percentage of RevenueRemainingPerformanceObligation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueRemainingPerformanceObligation us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-06-302011-03-312010-12-312010-03-31
Value34031918240119133423436128727017740013133815224780265109273299156124326234156202176630229
Percentage of ProfitLoss99.4100.6101.798.397.499.799.2102.8102.5102.7101.1101.5105.6104.0104.8102.9103.9100.4103.899.699.399.498.499.799.698.7101.098.9403.899.6
Percentage of RevenueRemainingPerformanceObligation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueRemainingPerformanceObligation us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-03-31
Value3432653191794031893372363582872751814041363421502528526611327327715712732520210623623114816118320417715316679230114186
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueRemainingPerformanceObligation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value9412930713314756305163143139219138106752851351279221699165119137130136
Percentage of ComprehensiveIncomeNetOfTax27.448.796.274.336.529.690.569.139.948.479.676.226.255.183.390.050.4108.281.287.660.443.087.3102.441.8
Percentage of RevenueRemainingPerformanceObligation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueRemainingPerformanceObligation dte:DTEElectric0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-12-312010-03-312009-12-312009-03-31
Value21-2-37512-10-7-7-2-6-7-13-7-7-3-1-4121212213122-2-24111
Percentage of ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueRemainingPerformanceObligation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-03-31
Value3452663171764101943382383482802681793981293291432458226510927427915812932620412234149518520217915716980231115187
Percentage of ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueRemainingPerformanceObligation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Income Loss

us-gaap:NetIncomeLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value34026731918240119133423436128727017740013133815224780265109273299156124326124198105234812271461561501832021761521638622912015183178
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueRemainingPerformanceObligation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value9412930713314756305163140138219138106752851351279221699137129136130137
Percentage of NetIncomeLoss27.648.396.273.136.729.391.369.738.848.181.178.026.557.384.388.851.4115.081.590.850.243.187.2104.842.0
Percentage of RevenueRemainingPerformanceObligation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueRemainingPerformanceObligation dte:DTEElectric0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:StatementBusinessSegments

dte:Electric



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-31
Value94307133147305163140219138106285135127214991361351291361798911519412796
Percentage of NetIncomeLoss27.696.273.136.791.369.738.881.178.026.584.388.851.480.890.849.886.5104.041.790.484.849.185.587.061.5
Percentage of RevenueRemainingPerformanceObligation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueRemainingPerformanceObligation dte:Electric0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

dte:EnergyTrading



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-30
Value34-14-632-13-5311096-4-23-712-3-9-22-1442-6-2714-222122-12
Percentage of NetIncomeLoss10.0-4.4-3.38.0-3.9-2.18.60.40.024.0-1.2-15.1-2.84.5-2.8-3.3-14.1-11.312.9-3.0-1.93.00.42.7-1.312.05.91.1-7.4
Percentage of RevenueRemainingPerformanceObligation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueRemainingPerformanceObligation dte:EnergyTrading0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

dte:Gas



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-31
Value121-388151-3014104-151107-41387-11-7111-16-4129-138964452
Percentage of NetIncomeLoss35.6-11.94.437.7-9.06.028.8-5.60.626.8-1.28.635.2-4.2-6.440.7-10.3-3.239.6-6.67.641.01.82.733.3
Percentage of RevenueRemainingPerformanceObligation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueRemainingPerformanceObligation dte:Gas0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

dte:GasStorageAndPipelines



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-30
Value7260504866606236404528353027252720182116161714171713141512
Percentage of NetIncomeLoss21.218.827.512.019.825.617.213.322.611.28.323.012.110.222.99.912.814.56.48.115.27.36.211.610.97.16.98.57.4
Percentage of RevenueRemainingPerformanceObligation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueRemainingPerformanceObligation dte:GasStorageAndPipelines0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

dte:PowerAndIndustrialProjects



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-30
Value304929265843454430303415173283338131527712221081251026
Percentage of NetIncomeLoss8.815.415.96.517.418.412.516.316.97.510.19.96.912.17.312.124.410.54.613.66.75.19.76.85.16.62.55.716.0
Percentage of RevenueRemainingPerformanceObligation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueRemainingPerformanceObligation dte:PowerAndIndustrialProjects0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CorporateAndOther



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-30
Value-11-45-32-3-52-41-21-15-3216-1-23-7-9-13-251-18-17-5-13-13-8-14-15-872
Percentage of NetIncomeLoss-3.2-14.1-17.6-0.7-15.6-17.5-5.8-5.6-18.14.0-0.3-15.1-2.8-3.4-11.9-9.20.6-14.5-5.2-2.5-12.4-5.6-3.5-9.6-9.6-4.435.6
Percentage of RevenueRemainingPerformanceObligation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueRemainingPerformanceObligation us-gaap:CorporateAndOther0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:StatementEquityComponents, dei:LegalEntity

us-gaap:RetainedEarnings, dte:DTEElectric



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value94307133147305163140
Percentage of NetIncomeLoss27.696.273.136.791.369.738.8
Percentage of RevenueRemainingPerformanceObligation0.00.00.00.00.00.00.0
Percentage of RevenueRemainingPerformanceObligation us-gaap:RetainedEarnings dte:DTEElectric0.00.00.00.00.00.00.0

Net Income Loss Available To Common Stockholders Basic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value339267318182400191333234360287269177399130338152247
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueRemainingPerformanceObligation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Income Loss Available To Common Stockholders Diluted

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value339267318182400191333234360287269177399130338152247
Percentage of NetIncomeLossAvailableToCommonStockholdersDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueRemainingPerformanceObligation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Income Loss Attributable To Noncontrolling Interest

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-03-31
Value21-2-37512-10-7-7-2-6-7-13-7-7-3-1-4121212213122-22431111
Percentage of NetIncomeLossAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueRemainingPerformanceObligation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Assets

us-gaap:Assets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-31
Value432324188238345368513643436288352923433033841337673307132582321493204129462287692856428737286542835028068279742637626189261612593526231259442594926339259092607525846260092478024579244892489624266242032419524590
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value25166245882411123177229002252921941216312125521228210122074420515204892019019779195591955419423192061884918649
Percentage of Assets58.258.762.962.962.962.162.263.062.862.963.563.763.863.968.568.868.568.067.867.767.266.7
Percentage of Assets58.258.762.962.962.962.162.263.062.862.963.563.763.863.968.568.868.568.067.867.767.266.7
Percentage of Assets dte:DTEElectric100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dte:InvestmentsByConsolidatedAndNonconsolidatedEntities

dte:VariableInterestEntityPrimaryBeneficiaryOtherRestricted



Period End2020-03-312019-12-31
Value164137
Percentage of Assets0.40.3
Percentage of Assets0.40.3
Percentage of Assets dte:VariableInterestEntityPrimaryBeneficiaryOtherRestricted100.0100.0

dte:VariableInterestEntityPrimaryBeneficiaryRestricted



Period End2020-03-312019-12-31
Value11641140
Percentage of Assets2.72.7
Percentage of Assets2.72.7
Percentage of Assets dte:VariableInterestEntityPrimaryBeneficiaryRestricted100.0100.0

dte:VariableInterestEntityPrimaryBeneficiarySGGRestricted



Period End2020-03-312019-12-31
Value10001003
Percentage of Assets2.32.4
Percentage of Assets2.32.4
Percentage of Assets dte:VariableInterestEntityPrimaryBeneficiarySGGRestricted100.0100.0

Liabilities

dte:InvestmentsByConsolidatedAndNonconsolidatedEntities

us-gaap:Liabilities

dte:VariableInterestEntityPrimaryBeneficiaryOtherRestricted



Period End2020-03-312019-12-31
Value2120
Percentage of Liabilities100.0100.0
Percentage of Assets0.00.0
Percentage of Assets dte:VariableInterestEntityPrimaryBeneficiaryOtherRestricted12.814.6

dte:VariableInterestEntityPrimaryBeneficiaryRestricted



Period End2020-03-312019-12-31
Value2829
Percentage of Liabilities133.3145.0
Percentage of Assets0.10.1
Percentage of Assets dte:VariableInterestEntityPrimaryBeneficiaryRestricted2.42.5

dte:VariableInterestEntityPrimaryBeneficiarySGGRestricted



Period End2020-03-312019-12-31
Value79
Percentage of Liabilities33.345.0
Percentage of Assets0.00.0
Percentage of Assets dte:VariableInterestEntityPrimaryBeneficiarySGGRestricted0.70.9

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-31
Value432324188238345368513643436288352923433033841337673307132582321493204129462287692856428737286542835028068279742637626189261612593526231259442594926339259092607525846260092478024579244892489624266242032419524590
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value25166245882411123177229002252921941216312125521228210122074420515204892019019779195591955419423192061884918649
Percentage of LiabilitiesAndStockholdersEquity58.258.762.962.962.962.162.263.062.862.963.563.763.863.968.568.868.568.067.867.767.266.7
Percentage of Assets58.258.762.962.962.962.162.263.062.862.963.563.763.863.968.568.868.568.067.867.767.266.7
Percentage of Assets dte:DTEElectric100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-31
Value1182211672107401039610545102371020798449888951293739088919490119130877888878772881285398665832781698008811779217876755275967373738971427104700969706785679367226646655162785995
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets27.327.928.028.228.928.228.928.729.228.228.327.928.628.131.030.531.130.530.830.130.929.831.030.631.030.530.029.129.328.028.527.427.526.928.127.627.727.027.427.125.924.4

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-31
Value715471957010682668166793652763386290626561346023599459955905572556955673567955615262519648544303
Percentage of StockholdersEquity60.561.665.365.764.666.463.964.463.665.965.466.365.266.564.765.264.164.764.465.160.762.461.358.4
Percentage of Assets16.517.218.318.518.718.718.518.518.618.618.518.518.618.720.019.919.919.719.819.618.718.618.716.3
Percentage of Assets dte:DTEElectric28.429.329.129.529.830.229.729.329.629.529.229.029.229.329.228.929.129.029.229.027.927.90.00.0

us-gaap:StatementEquityComponents, dei:LegalEntity

us-gaap:AdditionalPaidInCapital, dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value34253425324532453245324529202920292029202820
Percentage of StockholdersEquity29.029.330.231.230.831.728.629.729.530.731.3
Percentage of Assets7.98.28.58.88.98.98.38.58.68.68.8
Percentage of Assets us-gaap:AdditionalPaidInCapital dte:DTEElectric0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings, dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value23432384237921952185216222212032198419561787
Percentage of StockholdersEquity19.820.422.221.120.721.121.820.620.120.619.8
Percentage of Assets5.45.76.26.06.06.06.35.95.95.85.6
Percentage of Assets us-gaap:RetainedEarnings dte:DTEElectric0.00.00.00.00.00.00.00.00.00.00.0

Assets Current

us-gaap:AssetsCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-31
Value352630862985272628403260310328952957308128152631256727622595225823622575270026912788308727552721297328062549249627692915273030502951319629112771280031672741273328773328
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets8.27.47.87.47.89.08.88.48.79.18.58.18.08.68.87.88.39.09.49.59.911.010.410.411.410.89.79.610.711.110.511.711.412.311.711.311.412.711.311.311.913.5

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value1381135715051400148915201587150913871446147413601292137716001381132213311519149814391481
Percentage of AssetsCurrent39.244.050.451.452.446.651.152.146.946.952.451.750.349.961.761.256.051.756.355.751.648.0
Percentage of Assets3.23.23.93.84.14.24.54.44.14.34.54.24.04.35.44.84.64.65.35.35.15.3
Percentage of Assets dte:DTEElectric5.55.56.26.06.56.77.27.06.56.87.06.66.36.77.97.06.86.87.87.87.67.9

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-03-312008-12-312007-12-312006-12-31
Value55293766256718463164666362829266323537672309948607598527146218655918557684661197658412419352838886123147
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.30.20.20.20.20.20.20.20.50.20.20.20.30.30.20.10.10.10.20.80.40.20.20.30.40.20.30.20.80.20.20.70.20.30.20.20.80.30.30.00.80.20.00.00.30.00.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value1312269101812816151291113161317152912354142829342730
Percentage of CashAndCashEquivalentsAtCarryingValue2.412.934.214.517.925.414.312.79.822.719.014.513.414.124.240.648.640.543.353.554.529.246.738.734.751.946.2
Percentage of Assets0.00.00.10.00.00.00.00.00.00.00.00.00.00.00.10.00.10.10.10.40.20.10.10.10.10.10.1
Percentage of Assets dte:DTEElectric0.10.00.10.00.00.10.10.00.10.10.10.00.10.10.10.10.10.10.10.60.30.10.00.00.00.00.0

dte:InvestmentsByConsolidatedAndNonconsolidatedEntities

dte:VariableInterestEntityPrimaryBeneficiaryOtherRestricted



Period End2020-03-312019-12-31
Value1311
Percentage of CashAndCashEquivalentsAtCarryingValue2.411.8
Percentage of Assets0.00.0
Percentage of Assets dte:VariableInterestEntityPrimaryBeneficiaryOtherRestricted7.98.0

dte:VariableInterestEntityPrimaryBeneficiaryRestricted



Period End2020-03-312019-12-31
Value3327
Percentage of CashAndCashEquivalentsAtCarryingValue6.029.0
Percentage of Assets0.10.1
Percentage of Assets dte:VariableInterestEntityPrimaryBeneficiaryRestricted2.82.4

dte:VariableInterestEntityPrimaryBeneficiarySGGRestricted



Period End2020-03-312019-12-31
Value2016
Percentage of CashAndCashEquivalentsAtCarryingValue3.617.2
Percentage of Assets0.00.0
Percentage of Assets dte:VariableInterestEntityPrimaryBeneficiarySGGRestricted2.01.6

Accounts Receivable Net Current

us-gaap:AccountsReceivableNetCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-31
Value148216421453143616831789169016901709175813951451140815221250118011851276124212511534150412571400181115421239131414601336116412391262131712061297140113931140140314381666
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.43.93.83.94.64.94.84.95.15.24.24.54.44.84.24.14.14.44.34.45.55.44.85.36.95.94.75.15.65.14.54.84.95.14.95.35.75.64.75.85.96.8

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value694729779715728750894849754791770742654728778694618657730667664688
Percentage of AccountsReceivableNetCurrent46.844.453.649.843.341.952.950.244.145.055.251.146.447.862.258.852.251.558.853.343.345.7
Percentage of Assets1.61.72.01.92.02.12.52.52.22.32.32.32.02.32.62.42.22.32.52.42.42.5
Percentage of Assets dte:DTEElectric2.83.03.23.13.23.34.13.93.53.73.73.63.23.63.93.53.23.43.83.53.53.7

dte:InvestmentsByConsolidatedAndNonconsolidatedEntities

dte:VariableInterestEntityPrimaryBeneficiaryRestricted



Period End2020-03-312019-12-31
Value2627
Percentage of AccountsReceivableNetCurrent1.81.6
Percentage of Assets0.10.1
Percentage of Assets dte:VariableInterestEntityPrimaryBeneficiaryRestricted2.22.4

dte:VariableInterestEntityPrimaryBeneficiarySGGRestricted



Period End2020-03-312019-12-31
Value78
Percentage of AccountsReceivableNetCurrent0.50.5
Percentage of Assets0.00.0
Percentage of Assets dte:VariableInterestEntityPrimaryBeneficiarySGGRestricted0.70.8

Inventory Net

dte:InvestmentsByConsolidatedAndNonconsolidatedEntities

us-gaap:InventoryNet

dte:VariableInterestEntityPrimaryBeneficiaryOtherRestricted



Period End2020-03-312019-12-31
Value10174
Percentage of InventoryNet100.0100.0
Percentage of Assets0.20.2
Percentage of Assets dte:VariableInterestEntityPrimaryBeneficiaryOtherRestricted61.654.0

dte:VariableInterestEntityPrimaryBeneficiaryRestricted



Period End2020-03-312019-12-31
Value10174
Percentage of InventoryNet100.0100.0
Percentage of Assets0.20.2
Percentage of Assets dte:VariableInterestEntityPrimaryBeneficiaryRestricted8.76.5

Inventory Finished Goods

Inventory Raw Materials And Supplies

us-gaap:InventoryRawMaterialsAndSupplies



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value413386393431409405377362360380363390354356326332309323307308300292282277272265258234
Percentage of InventoryRawMaterialsAndSupplies100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.00.91.01.21.11.11.11.11.11.11.11.21.11.11.11.21.11.11.11.11.11.01.11.11.01.01.00.9

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value280280284283283279277276277275282292276271273264259251250245240231
Percentage of InventoryRawMaterialsAndSupplies67.872.572.365.769.268.973.576.276.972.477.774.978.076.183.779.583.877.781.479.580.079.1
Percentage of Assets0.60.70.70.80.80.80.80.80.80.80.90.90.90.80.90.90.90.90.90.90.90.8
Percentage of Assets dte:DTEElectric1.11.11.21.21.21.21.31.31.31.31.31.41.31.31.41.31.31.31.31.31.31.2

Other Assets Current

us-gaap:OtherAssetsCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-31
Value268209136178231221272162221199270168222195127161234203346244312313305166178209248115158194244162187196249223233255305167201242
Percentage of OtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.60.50.40.50.60.60.80.50.70.60.80.50.70.60.40.60.80.71.20.91.11.11.20.60.70.80.90.40.60.70.90.60.70.81.00.91.01.01.30.70.81.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value29783589278915701868146216631358316627672631
Percentage of OtherAssetsCurrent10.837.325.750.011.740.35.543.28.134.25.236.97.232.310.236.013.232.57.827.58.39.9
Percentage of Assets0.10.20.10.20.10.20.00.20.10.20.00.20.00.20.00.20.10.20.10.20.10.1
Percentage of Assets dte:DTEElectric0.10.30.10.40.10.40.10.30.10.30.10.30.10.30.10.30.20.30.10.30.10.2

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-31
Value361463507233473328343221431810326003212231656314243092430599302873002928748283712827328121280142757927124265382616925836253842512324795243562393623631234422308122780225412231222123217292157421370209242058820065
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets83.683.787.389.188.487.792.493.693.593.193.593.994.293.797.698.699.097.997.897.396.694.999.298.797.096.994.593.992.289.790.588.588.186.790.090.088.786.788.186.585.181.6

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value24950242792391723537231002274723683234102309822972226062243622276220942173721479214762139121045207182039519805
Percentage of PropertyPlantAndEquipmentGross69.069.271.571.771.771.572.672.973.073.173.173.373.573.675.675.776.076.175.175.175.274.6
Percentage of Assets57.758.062.463.963.462.767.168.268.368.068.468.969.369.073.874.775.274.473.473.172.770.8
Percentage of Assets dte:DTEElectric99.198.799.2101.6100.9101.0107.9108.2108.7108.2107.6108.2108.6107.8107.7108.6109.8109.4108.4107.9108.2106.2

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-31
Value99109755971510537103501016010988108831078610703106171053610421102991019810076101461008710147100039889971896709529939993239284916690708947903889298856879588908839867685828548827081577834
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets22.923.325.328.628.428.031.131.731.931.732.132.332.432.134.635.035.535.135.435.335.234.736.736.435.935.935.435.335.034.034.934.234.333.835.936.035.434.535.234.233.731.9

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value6810670666977574744273108156810180237984792178817812772176627577768176467586748574087216
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment68.768.768.971.971.971.974.274.474.474.674.674.875.075.075.175.275.775.874.874.874.974.3
Percentage of Assets15.816.017.520.620.420.123.123.623.723.624.024.224.324.126.026.326.926.626.526.426.425.8
Percentage of Assets dte:DTEElectric27.127.327.832.732.532.437.237.537.737.637.738.038.137.737.938.339.339.139.139.039.338.7

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-31
Value262362531723758222972186421650216122123920870207212030720063198661973018550182951812718034178671757617235168201649916307159851580015511151901486614684144041415213924137461342213284130531299212822126541243112231
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets60.760.462.060.560.059.761.261.961.761.461.461.661.861.663.063.663.562.862.462.061.460.162.662.361.160.959.158.557.355.855.654.353.952.954.254.053.352.252.852.351.449.7

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value18140175731722015963156581543715527153091507514988146851455514464143731407513902137951374513459132331298712589
Percentage of PropertyPlantAndEquipmentNet69.169.472.571.671.671.371.872.172.272.372.372.572.872.875.976.076.176.275.375.375.474.8
Percentage of Assets42.042.044.943.343.042.544.044.644.544.444.444.745.044.947.848.348.347.847.046.746.345.0
Percentage of Assets dte:DTEElectric72.171.571.468.968.468.570.870.870.970.669.970.270.570.169.770.370.570.369.368.968.967.5

dte:InvestmentsByConsolidatedAndNonconsolidatedEntities

dte:VariableInterestEntityPrimaryBeneficiaryOtherRestricted



Period End2020-03-312019-12-31
Value3133
Percentage of PropertyPlantAndEquipmentNet0.10.1
Percentage of Assets0.10.1
Percentage of Assets dte:VariableInterestEntityPrimaryBeneficiaryOtherRestricted18.924.1

dte:VariableInterestEntityPrimaryBeneficiaryRestricted



Period End2020-03-312019-12-31
Value439443
Percentage of PropertyPlantAndEquipmentNet1.71.7
Percentage of Assets1.01.1
Percentage of Assets dte:VariableInterestEntityPrimaryBeneficiaryRestricted37.738.9

dte:VariableInterestEntityPrimaryBeneficiarySGGRestricted



Period End2020-03-312019-12-31
Value408410
Percentage of PropertyPlantAndEquipmentNet1.61.6
Percentage of Assets0.91.0
Percentage of Assets dte:VariableInterestEntityPrimaryBeneficiarySGGRestricted40.840.9

us-gaap:CounterpartyName, us-gaap:StatementBusinessSegments

dte:PacificGasandElectricCorporation, dte:PowerAndIndustrialProjects



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value100101102103105106
Percentage of PropertyPlantAndEquipmentNet0.40.40.40.50.50.5
Percentage of Assets0.20.20.30.30.30.3
Percentage of Assets dte:PacificGasandElectricCorporation dte:PowerAndIndustrialProjects0.00.00.00.00.00.0

Long Term Investments

us-gaap:LongTermInvestments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-31
Value353437883669356635193368343630412852279726342550244222732226210119791936188319211911186918471841179117941723165416511591156615181536146214201501148214571357133614151280
Percentage of LongTermInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets8.29.09.69.79.79.39.78.98.48.38.07.87.67.17.67.36.96.76.66.86.86.77.07.06.86.96.66.46.46.06.05.85.95.65.76.16.15.95.65.55.85.2

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value1474169916131597154414121565151915171528147414271398135613541306128012711233130112981413
Percentage of LongTermInvestments41.744.944.044.843.941.945.550.053.254.656.056.057.259.760.862.264.765.765.567.767.975.6
Percentage of Assets3.44.14.24.34.23.94.44.44.54.54.54.44.34.24.64.54.54.44.34.64.65.1
Percentage of Assets dte:DTEElectric5.96.96.76.96.76.37.17.07.17.27.06.96.86.66.76.66.56.56.36.86.97.6

Goodwill

us-gaap:Goodwill



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-31
Value246624642293229322932293229322932293229322932291229222862018201820182018201820182018201820182018201820182018201820182018202020202020202020202020202020202024202420242037
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.75.96.06.26.36.36.56.76.86.86.97.07.17.16.87.07.17.07.07.17.27.27.77.77.77.87.77.87.87.77.87.77.87.88.28.28.28.18.38.48.48.3

us-gaap:BusinessAcquisition, us-gaap:StatementBusinessSegments

dte:M5LouisianaGatheringLLC, dte:GasStorageAndPipelines



Period End2020-03-312019-12-04
Value173171
Percentage of Goodwill7.00.0
Percentage of Assets0.40.0
Percentage of Assets dte:M5LouisianaGatheringLLC dte:GasStorageAndPipelines0.00.0

Intangible Assets Net Excluding Goodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill



Period End2020-03-312019-12-312019-09-302018-12-312017-12-312016-12-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value2402239394084986784294100101110111120125131134136138135135676770737471696754
Percentage of IntangibleAssetsNetExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.65.72.52.32.62.60.30.30.40.40.40.50.50.50.50.50.50.50.50.30.30.30.30.30.30.30.30.2

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302018-12-312017-12-312016-12-312015-12-31
Value19152121253134
Percentage of IntangibleAssetsNetExcludingGoodwill0.80.62.22.52.93.736.2
Percentage of Assets0.00.00.10.10.10.10.1
Percentage of Assets dte:DTEElectric0.10.10.10.10.10.20.2

Finite Lived Intangible Assets Net

dte:InvestmentsByConsolidatedAndNonconsolidatedEntities

us-gaap:FiniteLivedIntangibleAssetsNet

dte:VariableInterestEntityPrimaryBeneficiaryRestricted



Period End2020-03-312019-12-31
Value538542
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0
Percentage of Assets1.21.3
Percentage of Assets dte:VariableInterestEntityPrimaryBeneficiaryRestricted46.247.5

dte:VariableInterestEntityPrimaryBeneficiarySGGRestricted



Period End2020-03-312019-12-31
Value538542
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0
Percentage of Assets1.21.3
Percentage of Assets dte:VariableInterestEntityPrimaryBeneficiarySGGRestricted53.854.0

Deferred Tax Assets Liabilities Net

Other Assets Noncurrent

us-gaap:OtherAssetsNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-31
Value99369691195185158160152148159161175168168170175159157254248248245259243220193198198199196197190189188199192195204206203188185157
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets23.023.10.50.50.40.40.40.40.50.50.50.50.50.50.60.60.50.90.90.90.90.90.90.80.70.80.80.80.80.70.70.70.70.80.80.80.80.80.80.80.80.6

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value41713959159152135121117115123123124125125125133121119180171169174182
Percentage of OtherAssetsNoncurrent42.040.981.582.285.475.677.077.777.476.470.974.474.473.576.076.175.870.969.068.171.070.3
Percentage of Assets9.69.50.40.40.40.30.30.30.40.40.40.40.40.40.50.40.40.60.60.60.60.7
Percentage of Assets dte:DTEElectric16.616.10.70.70.60.50.50.50.60.60.60.60.60.60.70.60.60.90.90.90.91.0

Liabilities Current

us-gaap:LiabilitiesCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-31
Value397239973865365436474438211724992541281225982747183424371969188322092528227322321839257728052819356931893008296224762768230926352530262821002246255527492513248226453013
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets9.29.510.19.910.012.26.07.37.58.37.98.45.77.66.76.57.78.87.97.96.69.210.610.813.612.311.511.49.510.58.910.19.810.18.59.110.411.010.410.310.912.3

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value137118431575103881610778768201104106110911371962933745836101510929317237261037
Percentage of LiabilitiesCurrent34.546.140.828.422.424.341.432.843.437.742.049.952.538.337.844.445.943.241.032.439.540.2
Percentage of Assets3.24.44.12.82.23.02.52.43.33.13.34.23.02.92.52.93.63.83.22.62.63.7
Percentage of Assets dte:DTEElectric5.47.56.54.53.64.84.03.85.25.05.26.64.74.63.74.25.25.64.83.83.95.6

Debt Current

Long Term Debt Current

Accounts Payable Current

us-gaap:AccountsPayableCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-31
Value102810761033105198113291160105992011719949889101079813745649809835848825973873946945962866808711848724728690782708733631729641637723899
Percentage of AccountsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.42.62.72.92.73.73.33.12.73.53.03.02.83.42.82.62.32.82.93.02.93.53.33.63.63.73.33.12.73.22.82.82.73.02.93.02.62.92.62.63.03.7

Accounts Payable And Accrued Liabilities Current

dte:InvestmentsByConsolidatedAndNonconsolidatedEntities

us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent

dte:VariableInterestEntityPrimaryBeneficiaryOtherRestricted



Period End2020-03-312019-12-31
Value1413
Percentage of AccountsPayableAndAccruedLiabilitiesCurrent100.0100.0
Percentage of Assets0.00.0
Percentage of Assets dte:VariableInterestEntityPrimaryBeneficiaryOtherRestricted8.59.5

dte:VariableInterestEntityPrimaryBeneficiarySGGRestricted



Period End2020-03-312019-12-31
Value12
Percentage of AccountsPayableAndAccruedLiabilitiesCurrent7.115.4
Percentage of Assets0.00.0
Percentage of Assets dte:VariableInterestEntityPrimaryBeneficiarySGGRestricted0.10.2

Other Liabilities Current

us-gaap:OtherLiabilitiesCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-31
Value437504419405423509462408411525429391417498355308299429412375347494475473489495457570473538479508424549536517465597532503502518
Percentage of OtherLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.01.21.11.11.21.41.31.21.21.61.31.21.31.61.21.11.01.51.41.31.21.81.81.81.91.91.72.21.82.01.81.91.62.12.22.11.92.42.22.12.12.1

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value1501551541381011391437513314514613314914694741221381598974103
Percentage of OtherLiabilitiesCurrent34.330.836.834.123.927.331.018.432.427.634.034.035.729.326.524.040.832.238.623.721.320.9
Percentage of Assets0.30.40.40.40.30.40.40.20.40.40.40.40.50.50.30.30.40.50.60.30.30.4
Percentage of Assets dte:DTEElectric0.60.60.60.60.40.60.70.30.60.70.70.60.70.70.50.40.60.70.80.50.40.6

Dividends Payable Current

us-gaap:DividendsPayableCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-31
Value1951951733461731721613211601581482961481481382691311311312551241221222381161161162291081071072071009999199959595888886
Percentage of DividendsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.50.50.50.90.50.50.50.90.50.50.40.90.50.50.50.90.50.50.50.90.40.40.50.90.40.40.40.90.40.40.40.80.40.40.40.80.40.40.40.40.40.3

Liabilities Noncurrent

Long Term Debt

Long Term Debt Noncurrent

dei:LegalEntity

us-gaap:LongTermDebtNoncurrent

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value7638654868477178717865386537653760186017601655805879587858775735543854735492563456345144
Percentage of LongTermDebtNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets17.715.617.919.519.718.018.519.017.817.818.217.118.318.319.919.919.019.019.219.920.118.4
Percentage of Assets dte:DTEElectric30.426.628.431.031.329.029.830.228.328.328.626.928.728.729.129.027.828.028.329.329.927.6

Deferred Tax Liabilities Noncurrent

Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent

Minority Interest

us-gaap:MinorityInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-31
Value16616416417347548048347447547848048349448819212323211813151718203334353638424243443939444543443843
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.40.40.40.51.31.31.41.41.41.41.51.51.51.50.10.10.10.10.10.10.00.10.10.10.10.10.10.10.10.10.20.20.20.20.20.20.20.20.20.20.20.2

Other Liabilities Noncurrent

us-gaap:OtherLiabilitiesNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-31
Value1024610114337333334364285288293323325339335349243226205207219254247281278269266297290283281306302297295331258250246275323285328328
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets23.724.10.90.90.91.00.80.80.91.01.01.01.01.10.80.80.70.70.80.90.91.01.11.01.01.11.11.11.11.21.21.11.11.31.01.01.01.11.31.21.41.3

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value900089988286858876767472758079817568696674114108105
Percentage of OtherLiabilitiesNoncurrent87.889.024.325.825.424.226.726.425.322.323.123.623.623.230.930.133.731.933.844.943.737.4
Percentage of Assets20.821.50.20.20.20.20.20.20.20.20.20.20.20.30.30.20.20.20.30.40.40.4
Percentage of Assets dte:DTEElectric35.836.60.30.40.40.40.30.40.30.30.40.40.40.40.40.30.40.30.40.60.60.6

Stockholders Equity

us-gaap:StockholdersEquity



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-31
Value1182211672107401039610545102371020798449888951293739088919490119130877888878772881285398665832781698008811779217876755275967373738971427104700969706785679367226646655162785995
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets27.327.928.028.228.928.228.928.729.228.228.327.928.628.131.030.531.130.530.830.130.929.831.030.631.030.530.029.129.328.028.527.427.526.928.127.627.727.027.427.125.924.4

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-31
Value715471957010682668166793652763386290626561346023599459955905572556955673567955615262519648544303
Percentage of StockholdersEquity60.561.665.365.764.666.463.964.463.665.965.466.365.266.564.765.264.164.764.465.160.762.461.358.4
Percentage of Assets16.517.218.318.518.718.718.518.518.618.618.518.518.618.720.019.919.919.719.819.618.718.618.716.3
Percentage of Assets dte:DTEElectric28.429.329.129.529.830.229.729.329.629.529.229.029.229.329.228.929.129.029.229.027.927.90.00.0

us-gaap:StatementEquityComponents, dei:LegalEntity

us-gaap:AdditionalPaidInCapital, dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value34253425324532453245324529202920292029202820
Percentage of StockholdersEquity29.029.330.231.230.831.728.629.729.530.731.3
Percentage of Assets7.98.28.58.88.98.98.38.58.68.68.8
Percentage of Assets us-gaap:AdditionalPaidInCapital dte:DTEElectric0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings, dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value23432384237921952185216222212032198419561787
Percentage of StockholdersEquity19.820.422.221.120.721.121.820.620.120.619.8
Percentage of Assets5.45.76.26.06.06.06.35.95.95.85.6
Percentage of Assets us-gaap:RetainedEarnings dte:DTEElectric0.00.00.00.00.00.00.00.00.00.00.0

Common Stock Value

us-gaap:CommonStockValue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-31
Value523552334370434443244245423242054163398939783968395840304137412941184123411741104093390439003896389439073885376236833587356735493453341734183415342834403422338832573175
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets12.112.511.411.811.911.712.012.212.311.812.012.212.312.614.014.414.414.314.414.514.614.014.814.914.915.114.814.514.213.613.813.613.413.113.813.914.013.814.114.013.512.9

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value4811481146314631463146314306430643064306420642064206420640864086408640864086408637863786
Percentage of CommonStockValue91.991.9106.0106.6107.1109.1101.7102.4103.4107.9105.7106.0106.3104.498.899.099.299.199.299.492.597.0
Percentage of Assets11.111.512.112.612.712.812.212.512.712.812.712.913.113.113.914.214.314.214.314.413.513.5
Percentage of Assets dte:DTEElectric19.119.619.220.020.220.619.619.920.320.320.020.320.520.520.220.720.920.921.021.320.120.3

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-31
Value673265876516619863646100609357605848560055155245536551145131479149094794484545804727457844024246436041504142394540693944396937443804375036983516351334313374330931682985
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets15.615.717.016.817.516.817.316.817.316.616.716.116.716.017.416.717.216.716.916.216.816.416.716.216.716.015.815.215.715.015.314.414.714.414.914.314.313.813.913.713.112.1

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value2343238423792195218521622221203219841956192618151786178718171637160715851591147314741436
Percentage of RetainedEarningsAccumulatedDeficit34.836.236.535.434.335.436.535.333.934.934.934.633.334.935.434.232.733.132.832.231.231.4
Percentage of Assets5.45.76.26.06.06.06.35.95.95.85.85.65.65.66.25.75.65.55.65.25.35.1
Percentage of Assets dte:DTEElectric9.39.79.99.59.59.610.19.49.39.29.28.78.78.79.08.38.28.18.27.77.87.7

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-31
Value-145-148-146-146-143-120-118-121-123-120-120-125-129-133-138-142-140-145-150-151-155-155-133-134-137-136-151-155-156-158-147-151-153-158-146-146-148-149-150-146-147-165
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-0.3-0.4-0.4-0.4-0.4-0.3-0.3-0.4-0.4-0.4-0.4-0.4-0.4-0.4-0.5-0.5-0.5-0.5-0.5-0.5-0.6-0.6-0.5-0.5-0.5-0.5-0.6-0.6-0.6-0.6-0.6-0.6-0.6-0.6-0.6-0.6-0.6-0.6-0.6-0.6-0.6-0.7

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-03-31
Value1061748534615752633614595838567367396787317495531741443288433747541222544532597620437722316358334817145839
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueRemainingPerformanceObligation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value474552491344322475560362323489381303411360470372453442340195173505384183312
Percentage of NetCashProvidedByUsedInOperatingActivities44.773.891.955.942.875.091.260.838.586.2103.876.552.2113.694.970.161.199.8118.145.023.293.3173.033.658.6
Percentage of RevenueRemainingPerformanceObligation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueRemainingPerformanceObligation dte:DTEElectric0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-03-31
Value-1342-3174-1044-766-748-1011-956-794-586-760-555-608-641-1885-565-501-437-632-536-480-556-603-390-625-442-332-343-523-244-392-342-321-171-269-256
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueRemainingPerformanceObligation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value-872-592-535-461-639-734-429-455-371-454-368-333-387-445-365-366-297-570-394-345-312-441-305-542-101
Percentage of NetCashProvidedByUsedInInvestingActivities65.018.751.260.285.472.644.957.363.359.766.354.860.423.664.673.168.090.273.571.956.173.178.286.722.9
Percentage of RevenueRemainingPerformanceObligation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueRemainingPerformanceObligation dte:DTEElectric0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-03-31
Value8642443524152-1935036099-155196189192-1561594104-33-30615985178-1405015358-44-112-288-50-34657-56-82-50593-581
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueRemainingPerformanceObligation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value3992661116309265-1278549-32-1028-2682-102-10-154114-40219179-78-80354-204
Percentage of NetCashProvidedByUsedInFinancingActivities46.21.111.676.3-1626.375.7-35.385.9-31.6-16.3-5.314.616.75.1-98.130.350.371.7-47.1123.0-127.9-156.0-52.3610.3463.6
Percentage of RevenueRemainingPerformanceObligation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueRemainingPerformanceObligation dte:DTEElectric0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-03-31
Value1061748534615752633614595838567367396787317495531741443288433747541222544532597620437722316358334817145839
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueRemainingPerformanceObligation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value474552491344322475560362323489381303411360470372453442340195173505384183312
Percentage of NetCashProvidedByUsedInOperatingActivities44.773.891.955.942.875.091.260.838.586.2103.876.552.2113.694.970.161.199.8118.145.023.293.3173.033.658.6
Percentage of RevenueRemainingPerformanceObligation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueRemainingPerformanceObligation dte:DTEElectric0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Income Loss

us-gaap:NetIncomeLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value34026731918240119133423436128727017740013133815224780265109273299156124326124198105234812271461561501832021761521638622912015183178
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueRemainingPerformanceObligation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value9412930713314756305163140138219138106752851351279221699137129136130137
Percentage of NetIncomeLoss27.648.396.273.136.729.391.369.738.848.181.178.026.557.384.388.851.4115.081.590.850.243.187.2104.842.0
Percentage of RevenueRemainingPerformanceObligation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueRemainingPerformanceObligation dte:DTEElectric0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:StatementBusinessSegments

dte:Electric



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-31
Value94307133147305163140219138106285135127214991361351291361798911519412796
Percentage of NetIncomeLoss27.696.273.136.791.369.738.881.178.026.584.388.851.480.890.849.886.5104.041.790.484.849.185.587.061.5
Percentage of RevenueRemainingPerformanceObligation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueRemainingPerformanceObligation dte:Electric0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

dte:EnergyTrading



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-30
Value34-14-632-13-5311096-4-23-712-3-9-22-1442-6-2714-222122-12
Percentage of NetIncomeLoss10.0-4.4-3.38.0-3.9-2.18.60.40.024.0-1.2-15.1-2.84.5-2.8-3.3-14.1-11.312.9-3.0-1.93.00.42.7-1.312.05.91.1-7.4
Percentage of RevenueRemainingPerformanceObligation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueRemainingPerformanceObligation dte:EnergyTrading0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

dte:Gas



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-31
Value121-388151-3014104-151107-41387-11-7111-16-4129-138964452
Percentage of NetIncomeLoss35.6-11.94.437.7-9.06.028.8-5.60.626.8-1.28.635.2-4.2-6.440.7-10.3-3.239.6-6.67.641.01.82.733.3
Percentage of RevenueRemainingPerformanceObligation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueRemainingPerformanceObligation dte:Gas0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

dte:GasStorageAndPipelines



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-30
Value7260504866606236404528353027252720182116161714171713141512
Percentage of NetIncomeLoss21.218.827.512.019.825.617.213.322.611.28.323.012.110.222.99.912.814.56.48.115.27.36.211.610.97.16.98.57.4
Percentage of RevenueRemainingPerformanceObligation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueRemainingPerformanceObligation dte:GasStorageAndPipelines0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

dte:PowerAndIndustrialProjects



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-30
Value304929265843454430303415173283338131527712221081251026
Percentage of NetIncomeLoss8.815.415.96.517.418.412.516.316.97.510.19.96.912.17.312.124.410.54.613.66.75.19.76.85.16.62.55.716.0
Percentage of RevenueRemainingPerformanceObligation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueRemainingPerformanceObligation dte:PowerAndIndustrialProjects0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CorporateAndOther



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-30
Value-11-45-32-3-52-41-21-15-3216-1-23-7-9-13-251-18-17-5-13-13-8-14-15-872
Percentage of NetIncomeLoss-3.2-14.1-17.6-0.7-15.6-17.5-5.8-5.6-18.14.0-0.3-15.1-2.8-3.4-11.9-9.20.6-14.5-5.2-2.5-12.4-5.6-3.5-9.6-9.6-4.435.6
Percentage of RevenueRemainingPerformanceObligation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueRemainingPerformanceObligation us-gaap:CorporateAndOther0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:StatementEquityComponents, dei:LegalEntity

us-gaap:RetainedEarnings, dte:DTEElectric



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value94307133147305163140
Percentage of NetIncomeLoss27.696.273.136.791.369.738.8
Percentage of RevenueRemainingPerformanceObligation0.00.00.00.00.00.00.0
Percentage of RevenueRemainingPerformanceObligation us-gaap:RetainedEarnings dte:DTEElectric0.00.00.00.00.00.00.0

Profit Loss

us-gaap:ProfitLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-03-31
Value3422683171794081963352363512802631753941243251452407726410527430115712632720010723523014715818520017815616687230121151179
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueRemainingPerformanceObligation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312011-03-312010-12-312010-03-31
Value2-2-37512-10-7-7-2-6-7-13-7-7-3-1-412121241
Percentage of ProfitLoss0.6-0.6-1.71.72.60.30.8-2.8-2.5-2.7-1.1-1.5-5.6-4.0-4.8-2.9-3.9-0.4-3.80.40.70.61.60.31.12.60.4
Percentage of RevenueRemainingPerformanceObligation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueRemainingPerformanceObligation us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-06-302011-03-312010-12-312010-03-31
Value34031918240119133423436128727017740013133815224780265109273299156124326234156202176630229
Percentage of ProfitLoss99.4100.6101.798.397.499.799.2102.8102.5102.7101.1101.5105.6104.0104.8102.9103.9100.4103.899.699.399.498.499.799.698.7101.098.9403.899.6
Percentage of RevenueRemainingPerformanceObligation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueRemainingPerformanceObligation us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Depreciation Depletion And Amortization

us-gaap:DepreciationDepletionAndAmortization



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-03-31
Value353340322305296298273272281274258249249274230243229227196220209290293282280259232248245252271253251282232
Percentage of DepreciationDepletionAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value258252244229221220202202212204188180181211176187176172141165155232238229228
Percentage of DepreciationDepletionAndAmortization73.174.175.875.174.773.874.074.375.474.572.972.372.777.076.577.076.975.871.975.074.280.081.281.281.4

Increase Decrease In Other Operating Capital Net

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-09-302013-03-312012-03-312011-03-31
Value-104-965721131-31237-76-62-14450-2150-20557-4497-71-1-6-9972-44-191-240
Percentage of IncreaseDecreaseInOtherOperatingCapitalNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value-132-406823146-17267-3741-2783487-8575-2468-493917-65-4826
Percentage of IncreaseDecreaseInOtherOperatingCapitalNet126.941.7119.3109.5111.555.1181.148.7-66.118.8166.0-200.058.041.5131.654.570.169.0-3900.0-283.365.70.036.1

Increase Decrease In Inventories

us-gaap:IncreaseDecreaseInInventories



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value-55-5441161-207439378-182-3773103-135-277657-143-3710999-17212174138-147221125148-125-67166122-88-75
Percentage of IncreaseDecreaseInInventories100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value183263-5128-1926-501-921-44-876-315217-2591083-55
Percentage of IncreaseDecreaseInInventories-32.7-5.64.939.124.665.1-20.433.327.5-2.7-12.320.432.629.69.210.521.7-13.51.817.21.2491.75.760.137.4

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-03-31
Value-1342-3174-1044-766-748-1011-956-794-586-760-555-608-641-1885-565-501-437-632-536-480-556-603-390-625-442-332-343-523-244-392-342-321-171-269-256
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueRemainingPerformanceObligation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value-872-592-535-461-639-734-429-455-371-454-368-333-387-445-365-366-297-570-394-345-312-441-305-542-101
Percentage of NetCashProvidedByUsedInInvestingActivities65.018.751.260.285.472.644.957.363.359.766.354.860.423.664.673.168.090.273.571.956.173.178.286.722.9
Percentage of RevenueRemainingPerformanceObligation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueRemainingPerformanceObligation dte:DTEElectric0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Payments To Acquire Property Plant And Equipment

dei:LegalEntity

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value871589538542531741423455370471366329408504359325315500380354311418311478354
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-03-31
Value8642443524152-1935036099-155196189192-1561594104-33-30615985178-1405015358-44-112-288-50-34657-56-82-50593-581
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueRemainingPerformanceObligation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value3992661116309265-1278549-32-1028-2682-102-10-154114-40219179-78-80354-204
Percentage of NetCashProvidedByUsedInFinancingActivities46.21.111.676.3-1626.375.7-35.385.9-31.6-16.3-5.314.616.75.1-98.130.350.371.7-47.1123.0-127.9-156.0-52.3610.3463.6
Percentage of RevenueRemainingPerformanceObligation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueRemainingPerformanceObligation dte:DTEElectric0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Proceeds From Issuance Of Long Term Debt

us-gaap:ProceedsFromIssuanceOfLongTermDebt



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312010-12-312009-12-31
Value10921073-5794644-19135200388515-149613895858800163298495447694595037201964
Percentage of ProceedsFromIssuanceOfLongTermDebt100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.00.0100.00.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value109200-1644-1052000435058297000-149606942480
Percentage of ProceedsFromIssuanceOfLongTermDebt100.00.0-0.0-0.1100.0100.00.0100.00.00.084.50.0100.050.50.00.00.0-0.3100.20.0100.041.70.0

us-gaap:CreditFacility, us-gaap:DebtInstrument

us-gaap:UnsecuredDebt, dte:March2020UnsecuredTermLoanMaturingIn2022



Period End2020-03-31
Value0.0
Percentage of ProceedsFromIssuanceOfLongTermDebt0.0

Repayments Of Long Term Debt

us-gaap:RepaymentsOfLongTermDebt



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-03-31
Value3008210000303791548593021126142111715558549115141866279435691906686
Percentage of RepaymentsOfLongTermDebt100.0100.00.00.00.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-03-312018-12-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value300000300000001020001150556168113
Percentage of RepaymentsOfLongTermDebt100.00.00.00.079.20.00.00.00.00.090.976.90.00.098.30.099.630.698.3
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations dte:DTEElectric0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Payments For Repurchase Of Common Stock

Repayments Of Long Term Debt

us-gaap:RepaymentsOfLongTermDebt



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-03-31
Value3008210000303791548593021126142111715558549115141866279435691906686
Percentage of RepaymentsOfLongTermDebt100.0100.00.00.00.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-03-312018-12-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value300000300000001020001150556168113
Percentage of RepaymentsOfLongTermDebt100.00.00.00.079.20.00.00.00.00.090.976.90.00.098.30.099.630.698.3
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations dte:DTEElectric0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Debt Instrument Interest Rate Stated Percentage

Effective Income Tax Rate Continuing Operations

us-gaap:EffectiveIncomeTaxRateContinuingOperations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-30
Value0.13-0.00499999999999999060.130.110.12-0.038999999999999990.090.070.16-0.083999999999999990.220.250.22-0.00500000000000000440.250.260.26-0.0380000000000000340.280.20.310.0149999999999999580.120.280.330.280.290.310.320.320.320.350.140.37-0.0130000000000000120.360.340.34-0.00400000000000000360.31
Percentage of EffectiveIncomeTaxRateContinuingOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value0.120.00200000000000000180.160.160.160.00500000000000000440.210.210.250.00200000000000000180.350.350.350.00200000000000000180.350.360.36-0.00100000000000000090.350.350.35-0.00100000000000000090.360.370.36
Percentage of EffectiveIncomeTaxRateContinuingOperations92.3-40.0123.1145.5133.3-12.8233.3300.0156.2-2.4159.1140.0159.1-40.0140.0138.5138.52.6125.0175.0112.9-6.7300.0132.1109.1

Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number

Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price

Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period

Deferred Tax Liabilities

Deferred Tax Assets Net

Unrecognized Tax Benefits

us-gaap:UnrecognizedTaxBenefits



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302009-12-312008-12-312007-12-31
Value810888108881010101010333339991011334443528977222
Percentage of UnrecognizedTaxBenefits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-31
Value10131010101310101013131313134444444444
Percentage of UnrecognizedTaxBenefits125.0130.0125.0125.0125.0130.0125.0125.0125.0130.0130.0130.0130.0130.0133.3133.3133.3133.3133.344.444.444.440.036.4

Deferred Tax Assets Valuation Allowance

Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset



Period End2020-03-312019-12-312019-09-302019-06-302019-03-31
Value164169145142138
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-31
Value8487646770
Percentage of OperatingLeaseRightOfUseAsset51.251.544.147.250.7

us-gaap:CounterpartyName, us-gaap:StatementBusinessSegments

dte:PacificGasandElectricCorporation, dte:PowerAndIndustrialProjects



Period End2020-03-31
Value7
Percentage of OperatingLeaseRightOfUseAsset4.3

Cash And Cash Equivalents Period Increase Decrease

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value67693766261761048618689868410211360
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value13122691018128161513
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents1.912.934.214.516.423.711.59.38.616.911.5

Proceeds From Repayments Of Short Term Debt

us-gaap:BusinessAcquisition, us-gaap:StatementBusinessSegments

dte:BusinessCombinationPurchaseofRenewableEnergyProjectAmountofPower

dte:SouthJerseyIndustriesCombinedHeatandPowerGenerationFacility, dte:PowerAndIndustrialProjects



Period End2020-02-18
Value8.0
Percentage of BusinessCombinationPurchaseofRenewableEnergyProjectAmountofPower100.0

dte:EffectiveIncomeTaxRateReconciliationTaxCutsandJobsActof2017AmortizationofRegulatoryLiabilityPercent



Period End2020-03-312019-06-302019-03-31
Value0.020.030.03
Percentage of EffectiveIncomeTaxRateReconciliationTaxCutsandJobsActof2017AmortizationofRegulatoryLiabilityPercent100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-06-302019-03-31
Value0.030.00.04
Percentage of EffectiveIncomeTaxRateReconciliationTaxCutsandJobsActof2017AmortizationofRegulatoryLiabilityPercent150.00.0133.3

us-gaap:EnvironmentalRemediationContingency

dte:EnvironmentalContingenciesGoaltoreduceCarbonEmissionsPercentage

dte:ReductionofCarbonEmissionsby2030



Period End2020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.50.00.00.00.5
Percentage of EnvironmentalContingenciesGoaltoreduceCarbonEmissionsPercentage100.00.00.00.0100.0

dte:ReductionofCarbonEmissionsby2040



Period End2020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.80.00.00.00.8
Percentage of EnvironmentalContingenciesGoaltoreduceCarbonEmissionsPercentage160.00.00.00.0160.0

dte:ReductionofCarbonEmissionsbyEarly2020s



Period End2020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.320.00.00.00.32
Percentage of EnvironmentalContingenciesGoaltoreduceCarbonEmissionsPercentage64.00.00.00.064.0

us-gaap:FairValueByMeasurementFrequency, dei:LegalEntity

dte:FairValueAssetsMeasuredonRecurringBasisChangeinUnrealizedGainLossincludedinregulatoryassetsandliabilities

us-gaap:FairValueMeasurementsRecurring, dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0-2-1900-215
Percentage of FairValueAssetsMeasuredonRecurringBasisChangeinUnrealizedGainLossincludedinregulatoryassetsandliabilities0.0100.0100.0100.00.00.0100.0100.0

us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementFrequency

dte:FairValueNetDerivativeAssetLiabilityMeasuredonRecurringBasisUnobservableInputsReconciliationGainsLossesRecordedInRegulatoryAssetsLiabilities

dte:OtherCommodityContract, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-09-30
Value-2-1-39-33-8150102112026-23
Percentage of FairValueNetDerivativeAssetLiabilityMeasuredonRecurringBasisUnobservableInputsReconciliationGainsLossesRecordedInRegulatoryAssetsLiabilities100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.00.0100.0100.0100.0100.0

us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-09-30
Value-2-1-39-33-8150102112026-23
Percentage of FairValueNetDerivativeAssetLiabilityMeasuredonRecurringBasisUnobservableInputsReconciliationGainsLossesRecordedInRegulatoryAssetsLiabilities100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.00.0100.0100.0100.0100.0

us-gaap:FairValueByMeasurementFrequency, dei:LegalEntity

us-gaap:FairValueMeasurementsRecurring, dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-2-1-39-33-815
Percentage of FairValueNetDerivativeAssetLiabilityMeasuredonRecurringBasisUnobservableInputsReconciliationGainsLossesRecordedInRegulatoryAssetsLiabilities100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ScheduleOfSharesSubjectToMandatoryRedemptionBySettlementTerms, us-gaap:SubsequentEventType

dte:FinancialInstrumentsSubjecttoMandatoryRedemptionContractAdjustmentRate

dte:EquityUnitsSubjecttoMandatoryRedemption, us-gaap:SubsequentEvent



Period End2020-02-01
Value0.04
Percentage of FinancialInstrumentsSubjecttoMandatoryRedemptionContractAdjustmentRate100.0

dte:GainLossonSaleofAssetsandAssetImpairmentChargesnet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-312017-09-302016-12-312016-09-302015-12-312015-09-30
Value60-1-130-18-11-33-2-80-98-1
Percentage of GainLossonSaleofAssetsandAssetImpairmentChargesnet100.00.0100.0100.00.0100.0100.0100.0100.0100.00.0100.0100.0

us-gaap:CounterpartyName, us-gaap:GuaranteeObligationsByNature

dte:GuarantorObligationsMaximumPercentageExposure

dte:TexasEasternTransmissionLP, dte:NEXUSPipeline



Period End2020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.50.00.00.00.5
Percentage of GuarantorObligationsMaximumPercentageExposure100.00.00.00.0100.0

dte:Vector, dte:NEXUSPipeline



Period End2020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.50.00.00.00.5
Percentage of GuarantorObligationsMaximumPercentageExposure100.00.00.00.0100.0

us-gaap:CounterpartyName, us-gaap:GuaranteeObligationsByNature, dei:LegalEntity

dte:DTEGas, dte:NEXUSPipeline, dte:DTEGas



Period End2020-03-312019-12-312019-09-30
Value0.50.00.0
Percentage of GuarantorObligationsMaximumPercentageExposure100.00.00.0

dte:IncomefromREFinvestees



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value2334402927232725231720221816202019
Percentage of IncomefromREFinvestees100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dte:IncomeonContractServices



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value78768811122029445556
Percentage of IncomeonContractServices100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value79788711132039544556
Percentage of IncomeonContractServices100.0112.5100.0133.3100.087.5100.0108.3100.0150.0100.0125.0100.080.0100.0100.0100.0

dte:IncreaseDecreaseinEffectiveTaxRatefromPriorYearPercent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302016-09-302015-06-302015-03-31
Value0.010.040.04-0.04-0.13-0.18-0.06-0.03-0.03-0.08-0.02
Percentage of IncreaseDecreaseinEffectiveTaxRatefromPriorYearPercent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312015-06-302015-03-31
Value-0.04-0.05-0.05-0.09-0.14-0.14-0.1-0.02-0.01
Percentage of IncreaseDecreaseinEffectiveTaxRatefromPriorYearPercent-400.0-125.0-125.0225.0107.777.8166.725.050.0

dte:IncreaseDecreaseinGasInventoryEqualization



Period End2020-03-312019-06-302019-03-312018-06-302018-03-312017-06-302017-03-312016-06-302016-03-312015-06-302015-03-312014-06-302014-03-312013-06-302013-03-31
Value62-4388-4885-5186-4187-74130-104142-67140
Percentage of IncreaseDecreaseinGasInventoryEqualization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dte:IncreaseDecreaseinPensionPlanObligationsAffiliates

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value-6106-2-2-10392-3-4-178-15-601-12323423-9-32-95-88617-39-63-20
Percentage of IncreaseDecreaseinPensionPlanObligationsAffiliates100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dte:IncreaseDecreaseinPostretirementObligationsAffiliates

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value-81058-3-2138-24-23-2459-19-192114-18-15-19-49-14-22-128193-14-13-15
Percentage of IncreaseDecreaseinPostretirementObligationsAffiliates100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dte:IncreaseDecreaseinPrepaidPostretirementCosts



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value14-5-97310369000
Percentage of IncreaseDecreaseinPrepaidPostretirementCosts100.0100.0100.0100.0100.00.0100.0100.00.00.00.0

dte:Nuclearfuelamortization



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-31
Value1315151515614101514151212141514156121513151414589
Percentage of Nuclearfuelamortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value13151515156141015141512121415141561215131514145
Percentage of Nuclearfuelamortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dte:NumberOfFormerMgpSites

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302015-12-312015-09-302015-06-302015-03-31
Value020000000000000
Percentage of NumberOfFormerMgpSites100.0100.00.00.0100.00.00.00.0100.00.00.00.00.00.0100.0

dte:DTEGas



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-312015-09-302015-06-302015-03-31
Value14.00.00.00.014.00.00.00.014.00.00.00.014.00.00.00.00.00.014.0
Percentage of NumberOfFormerMgpSites466.70.00.00.0466.70.00.00.0466.70.00.00.00.00.00.00.00.00.0466.7

us-gaap:EnvironmentalRemediationSite, dei:LegalEntity

dte:CleanUpCompletedandSiteClosed, dte:DTEGas



Period End2020-03-312019-12-312019-09-30
Value8.00.01.0
Percentage of NumberOfFormerMgpSites266.70.00.0

dte:PartialClosureComplete, dte:DTEGas



Period End2020-03-312019-12-312019-09-30
Value4.00.0-3.0
Percentage of NumberOfFormerMgpSites133.30.00.0

dte:OtherMiscellaneousNonoperatingIncome



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value0-1956-1361078511222
Percentage of OtherMiscellaneousNonoperatingIncome0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value05542-124262213111
Percentage of OtherMiscellaneousNonoperatingIncome0.0-500.055.680.033.3100.066.766.720.085.725.040.0100.0300.050.050.050.0

dte:PlantAndEquipmentExpendituresNonUtility



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-31
Value195967575275787696180654622721134304148753958515898736117
Percentage of PlantAndEquipmentExpendituresNonUtility100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dte:PlantAndEquipmentExpendituresUtility



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-31
Value993742688653641877535561466598471435533631470403394578458415366489371525399309331253
Percentage of PlantAndEquipmentExpendituresUtility100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dte:ProceedsfromRepaymentsofShorttermDebtAffiliate

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value420-198244-50-4268-672650-12-1278844112281419-4928-99925
Percentage of ProceedsfromRepaymentsofShorttermDebtAffiliate100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dte:ProceedsfromRepaymentsofShorttermDebtOther

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value-283-283820-14998-79-250142-73-15267-3620-211-61226460-50-204-212750
Percentage of ProceedsfromRepaymentsofShorttermDebtOther100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.00.0100.0100.0100.0100.00.0

dte:RegulatedandUnregulatedOperatingExpenseDepreciationandAmortization



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value353340322305296298273272281274258249
Percentage of RegulatedandUnregulatedOperatingExpenseDepreciationandAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dte:RegulatedandUnregulatedOperatingExpenseMaintenanceandOperations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value579680588560591730604583534594550542
Percentage of RegulatedandUnregulatedOperatingExpenseMaintenanceandOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dte:UnregulatedOperatingExpenseProductsandServices



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value96812571258138516821443177314691248
Percentage of UnregulatedOperatingExpenseProductsandServices100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RelatedPartyTransactionsByRelatedParty, dei:LegalEntity

us-gaap:AllocatedShareBasedCompensationExpense

srt:ParentCompany, dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value9109111311118
Percentage of AllocatedShareBasedCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementScenario, us-gaap:BusinessAcquisition, us-gaap:StatementBusinessSegments

us-gaap:BusinessCombinationConsiderationTransferred1

srt:ScenarioForecast, dte:HeritageSustainableEnergyRenewableEnergyProjectTwo, dte:Electric



Period End2020-01-31
Value30
Percentage of BusinessCombinationConsiderationTransferred1100.0

us-gaap:CapitalExpendituresIncurredButNotYetPaid



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-31
Value28519223523532593717973422196144142013422-212018620-17-3212219
Percentage of CapitalExpendituresIncurredButNotYetPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value138249191402935810979-21-113411461210016-20015423-13-24176
Percentage of CapitalExpendituresIncurredButNotYetPaid48.4126.340.954.359.690.659.321.660.9108.2-525.0-4.568.479.242.960.074.672.795.20.082.8115.076.5800.083.0

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value58317141-15-2818-1009732-18-11
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1-1417-1-864-81
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect0.2-82.4121.4-100.053.3-21.422.28.01.0

us-gaap:CommonStockDividendsPerShareDeclared



Period End2020-03-312019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-03-31
Value1.011.890.9450.95000000000000020.01.770.88250.88499999999999980.8250.8250.8250.83000000000000010.770.730.730.730.730.690.690.690.690.660.660.660.660.620.620.590.590.590.590.560.560.560.530.530.530.530.53
Percentage of CommonStockDividendsPerShareDeclared100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByAssetClass, dei:LegalEntity

us-gaap:DebtSecuritiesAvailableForSaleRealizedGain

dte:NuclearDecommissioningTrustFund, dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value3113151711131019
Percentage of DebtSecuritiesAvailableForSaleRealizedGain100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByAssetClass, dei:LegalEntity

us-gaap:DebtSecuritiesAvailableForSaleRealizedLoss

dte:NuclearDecommissioningTrustFund, dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value16681072076
Percentage of DebtSecuritiesAvailableForSaleRealizedLoss100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxesAndTaxCredits



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-03-31
Value213442053149-4382060-659764100211105480-14103648411248119776558-344828410136366466
Percentage of DeferredIncomeTaxesAndTaxCredits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value73128152333654348971187357441527670511425176985410342
Percentage of DeferredIncomeTaxesAndTaxCredits3.370.513.748.446.9-825.0171.1215.080.0-149.2121.6114.157.0209.5138.2140.787.5-364.3137.979.790.587.5112.586.654.5

us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value-5-3-3-3-3-3-3-2-3-3-3-4-3-8-6-8
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value-43-34-33-34-32-44-43-45-44-44-46-43-43-40-43-41
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses860.01133.31100.01133.31066.71466.71433.32250.01466.71466.71533.31075.01433.3500.0716.7512.5

us-gaap:RetirementPlanType, dei:LegalEntity

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit, dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-3-2-1-1-1-1-3-2
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses60.066.733.333.333.333.3100.0100.0

us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value-5-2-3-2-20000-4-3-4-3-30-29-29
Percentage of DefinedBenefitPlanAmortizationOfPriorServiceCostCredit100.0100.0100.0100.0100.00.00.00.00.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value0.01000000.00.00.00.00.00.00.00.00.01000000.00.00.01000000.00.00.0
Percentage of DefinedBenefitPlanAmortizationOfPriorServiceCostCredit-0.0-50.0-0.0-0.0-0.00.00.00.00.0-0.0-33.3-0.0-0.0-3.3-0.0-0.0

us-gaap:RetirementPlanType, dei:LegalEntity

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit, dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-4-2-1-3-1000
Percentage of DefinedBenefitPlanAmortizationOfPriorServiceCostCredit80.0100.033.3150.050.00.00.00.0

us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value3243031313636353632333233323332
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value83818281818282838278787778777778
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets259.42025.0273.3261.3261.3227.8227.8237.1227.8243.8236.4240.6236.4240.6233.3243.8

us-gaap:RetirementPlanType, dei:LegalEntity

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit, dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value222212121242525
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets68.850.070.067.767.766.769.471.4

us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanInterestCost

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value14171817181718171718181918202020
Percentage of DefinedBenefitPlanInterestCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value46555554555151505054535354555555
Percentage of DefinedBenefitPlanInterestCost328.6323.5305.6317.6305.6300.0283.3294.1294.1300.0294.4278.9300.0275.0275.0275.0

us-gaap:RetirementPlanType, dei:LegalEntity

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit, dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value1113131413131314
Percentage of DefinedBenefitPlanInterestCost78.676.572.282.472.276.572.282.4

us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value-1220-7-7-7-9-9-9-9-8-8-7-8-28-29-26
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value31302728273836373743444243424441
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost-258.3150.0-385.7-400.0-385.7-422.2-400.0-411.1-411.1-537.5-550.0-600.0-537.5-150.0-151.7-157.7

us-gaap:RetirementPlanType, dei:LegalEntity

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit, dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-715-4-5-4-5-4-4
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost58.375.057.171.457.155.644.444.4

us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanServiceCost

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value6656576777767777
Percentage of DefinedBenefitPlanServiceCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value25212121212524252523222324232323
Percentage of DefinedBenefitPlanServiceCost416.7350.0420.0350.0420.0357.1400.0357.1357.1328.6314.3383.3342.9328.6328.6328.6

us-gaap:RetirementPlanType, dei:LegalEntity

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit, dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value54444555
Percentage of DefinedBenefitPlanServiceCost83.366.780.066.780.071.483.371.4

us-gaap:StatementBusinessSegments

us-gaap:DerivativeGainLossOnDerivativeNet

dte:EnergyTrading



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value637800791879926130011009371200
Percentage of DerivativeGainLossOnDerivativeNet100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-30
Value5250-8764-11072-282916111-25-19-19-46-204225-75-27-1610121238251247-25938-112
Percentage of DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation

dte:ElectricityCommodityContract, us-gaap:Sales



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value1235416-49122628129663313-7252319-24-61415312312-451333022
Percentage of DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet1.946.0-675.0228.6-816.7300.0-236.40.0179.2-235.7113.881.2-6.3-100.0-121.1-100.052.230.033.360.0-41.3-85.2-75.0-44.6633.30.095.7

dte:EnvironmentalandOtherCommodityContract, us-gaap:Sales



Period End2020-03-312019-03-31
Value211
Percentage of DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet40.416.7

dte:NaturalGasCommodityContract, srt:Fuel



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value362-47-3070-20-616
Percentage of DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet69.24.0587.5-428.61166.7-500.054.50.0

dte:NaturalGasCommodityContract, us-gaap:Sales



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value-1140-524-159-29-48-110-137-142057-8316-30-564155-4-126-20-38155-127-851
Percentage of DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet-21.280.062.5342.9-250.0225.0263.60.0-152.8489.3-48.3125.051.4332.0-84.2157.9121.7-205.0131.0-16.0168.074.1237.5153.5-604.80.04.3

us-gaap:ForeignExchangeContract, us-gaap:Sales



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value501-2-15-2221-2-10201-511010-13-400
Percentage of DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet9.60.0-12.5-28.6-16.7125.018.20.02.8-3.6-6.9-6.20.0-8.0-0.0-5.310.9-5.02.40.0-1.3-0.06.23.0-19.00.00.0

us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeNonmonetaryNotionalAmountEnergyMeasure

dte:ElectricityCommodityContract



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-30
Value360-20330-41380-4-135-11
Percentage of DerivativeNonmonetaryNotionalAmountEnergyMeasure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dte:NaturalGasCommodityContract



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-30
Value1756-31832-5512537325-62501858710-30178117
Percentage of DerivativeNonmonetaryNotionalAmountEnergyMeasure4844.4-67712.1-1110.4-248878.67559.738643.81509.04725.04839.09054.111.91609.55086.2-151.4

dte:RenewableEnergyCommodityContract



Period End2020-03-31
Value11
Percentage of DerivativeNonmonetaryNotionalAmountEnergyMeasure32.4

us-gaap:DirectFinancingLeaseInterestIncome



Period End2020-03-312019-09-302019-06-302019-03-31
Value4211
Percentage of DirectFinancingLeaseInterestIncome100.0100.0100.0100.0

us-gaap:DividendsCommonStockCash



Period End2020-03-312019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312011-06-302011-03-312010-12-312010-03-31
Value1953471731720321160158029614814802691311310255124122023811619994-95-88
Percentage of DividendsCommonStockCash100.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value135123123124115116115115108108108108105105105105989810099
Percentage of DividendsCommonStockCash69.20.035.471.766.90.035.871.968.40.036.573.070.90.039.080.274.80.039.279.8

us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings



Period End2020-03-312019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-06-302011-03-312010-12-312010-03-31
Value19534717317203211601580296148148026913113102551241220238116-107-10019994-367-88
Percentage of DividendsCommonStockCash100.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.00.00.0100.0100.0386.3100.0

us-gaap:StatementEquityComponents, dei:LegalEntity

us-gaap:RetainedEarnings, dte:DTEElectric



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value135123123124116115115
Percentage of DividendsCommonStockCash69.20.035.471.70.035.871.9

us-gaap:EffectiveIncomeTaxRateReconciliationTaxCreditsOther



Period End2020-03-312019-06-302019-03-31
Value0.020.070.05
Percentage of EffectiveIncomeTaxRateReconciliationTaxCreditsOther100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-06-302019-03-31
Value0.010.00.01
Percentage of EffectiveIncomeTaxRateReconciliationTaxCreditsOther50.00.020.0

us-gaap:EquityMethodInvestmentDividendsOrDistributions



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value393140454426141915191819181619151815191416
Percentage of EquityMethodInvestmentDividendsOrDistributions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EquitySecuritiesFvNiGainLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value01037170510765
Percentage of EquitySecuritiesFvNiGainLoss0.0100.0100.0100.0100.00.0100.0100.00.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value01037170510765
Percentage of EquitySecuritiesFvNiGainLoss0.0100.0100.0100.0100.00.0100.0100.00.0100.0100.0100.0

us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss

dte:ElectricityCommodityContract, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-09-30
Value21271538-2111104-10151820-386-4-3-3
Percentage of FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dte:NaturalGasCommodityContract, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-09-30
Value1919-36-116-10-31-20-58-38-8-2035-1-50-41-7218
Percentage of FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss90.570.4-240.0-2.6-76.2-90.9-310.0-500.0580.0-253.3-44.4-100.0-1166.7-12.5-833.31025.02400.0-600.0

dte:OtherCommodityContract, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-09-30
Value0-32-1-4-1-13-1-201100002-1-3
Percentage of FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss0.0-118.5-6.7-10.54.8-118.2-10.0-50.0-0.06.75.60.0-0.00.00.0-50.033.3100.0

us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-09-30
Value4014-2233-6-12-22-18-68-22110327-44-43-7612
Percentage of FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss190.551.9-146.786.828.6-109.1-220.0-450.0680.0-146.761.10.0-1066.787.5-733.31075.02533.3-400.0

us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings

dte:ElectricityCommodityContract, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-09-30
Value20303741-3142118131643321-9202412-5818
Percentage of FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dte:NaturalGasCommodityContract, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-09-30
Value2419-35-131-18-30-28-70-67-8-652-36-65-36-2024
Percentage of FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings120.063.3-94.6-2.4-100.0-450.0-142.9-155.6-53.4-104.7-24.2-28.6-577.8-180.0-270.8-300.034.5133.3

dte:OtherCommodityContract, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-09-30
Value0000-100101101002-1-3
Percentage of FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings0.00.00.00.03.20.00.05.60.01.63.00.0-11.10.00.016.71.7-16.7

us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-09-30
Value4449240-1-14-9-961-2261544-16-41-22-7939
Percentage of FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings220.0163.35.497.63.2-350.0-42.9-50.046.6-3.178.871.4-488.9-80.0-170.8-183.3136.2216.7

us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSettlements

dte:ElectricityCommodityContract, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-09-30
Value2122396-8-418181565932965243-3618
Percentage of FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSettlements100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dte:NaturalGasCommodityContract, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-09-30
Value0-7-40-8-15-9-13-92-40-23-4-29-40-28-88-5
Percentage of FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSettlements0.0-31.8-10.30.0100.0375.0-50.0-72.2-59.0-67.8-71.9-44.4-483.3-800.0-116.7-266.7-22.2-27.8

dte:OtherCommodityContract, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-09-30
Value0112121545644022-12
Percentage of FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSettlements0.04.52.633.3-12.5-50.05.627.82.68.518.844.466.70.08.366.72.811.1

us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-09-30
Value2116368-15-1710106824159-19-35-2-3-2915
Percentage of FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSettlements100.072.792.3133.3187.5425.055.655.643.640.746.9100.0-316.7-700.0-8.3-100.080.683.3

us-gaap:FairValueByMeasurementFrequency, dei:LegalEntity

us-gaap:FairValueMeasurementsRecurring, dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value01121315
Percentage of FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSettlements0.04.52.633.3-12.5-75.05.627.8

us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationTransfersIntoLevel3

dte:NaturalGasCommodityContract, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-09-30
Value0.00.01000000.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationTransfersIntoLevel30.00.0100.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-09-30
Value0.00.01000000.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationTransfersIntoLevel30.00.0100.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationTransfersOutOfLevel3

dte:NaturalGasCommodityContract, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-09-30
Value100000003000001010
Percentage of FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationTransfersOutOfLevel3100.00.00.00.00.00.00.00.0100.00.00.00.00.00.0100.00.0100.00.0

us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-09-30
Value100000003000001010
Percentage of FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationTransfersOutOfLevel3100.00.00.00.00.00.00.00.0100.00.00.00.00.00.0100.00.0100.00.0

us-gaap:FinancingReceivableAllowanceForCreditLossesRecovery



Period End2020-03-31
Value16
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-31
Value10
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery62.5

us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

dte:OtherFinancingReceivables



Period End2020-03-31
Value0.0
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery0.0

us-gaap:TradeAccountsReceivable



Period End2020-03-31
Value16
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery100.0

us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs



Period End2020-03-31
Value52
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-31
Value30
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs57.7

us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

dte:OtherFinancingReceivables



Period End2020-03-31
Value1000000.0
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs1.9

us-gaap:TradeAccountsReceivable



Period End2020-03-31
Value51
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs98.1

us-gaap:ScheduleOfSharesSubjectToMandatoryRedemptionBySettlementTerms, us-gaap:SubsequentEventType

us-gaap:ForwardContractIndexedToIssuersEquityForwardRate

dte:EquityUnitsSubjecttoMandatoryRedemption, us-gaap:SubsequentEvent



Period End2020-02-01
Value50.0
Percentage of ForwardContractIndexedToIssuersEquityForwardRate100.0

us-gaap:FairValueByAssetClass

us-gaap:GainLossOnInvestments

us-gaap:AssetHeldInTrust



Period End2020-03-312019-03-31
Value-3117
Percentage of GainLossOnInvestments100.0100.0

us-gaap:EquitySecurities



Period End2020-03-312019-03-31
Value-2313
Percentage of GainLossOnInvestments74.276.5

us-gaap:FixedIncomeSecurities



Period End2020-03-312019-03-31
Value-84
Percentage of GainLossOnInvestments25.823.5

us-gaap:GainLossOnSalesOfAssetsAndAssetImpairmentCharges



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-31
Value10-1-1-130-19-10-13-32-6-30-8010-97-1-1810-6271-66
Percentage of GainLossOnSalesOfAssetsAndAssetImpairmentCharges100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeLossFromEquityMethodInvestments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value293434202333463221252625261914201517171616
Percentage of IncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccountsAndOtherReceivables



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-31
Value-151139181-226-143129-6513-33295635-842327516-9718-43-2428225-128-415270-14878
Percentage of IncreaseDecreaseInAccountsAndOtherReceivables100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value-54-4073-6-47-1223125-39-246894-58-7110389-57-136604033-5020-6
Percentage of IncreaseDecreaseInAccountsAndOtherReceivables35.8-28.840.32.732.9-94.6-4.6961.5118.2-8.11133.3268.669.0-30.6137.3556.258.8-755.6-139.5-16.537.51.339.1-4.8-2.2

us-gaap:IncreaseDecreaseInAccountsPayable



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value-243-4441-28813743102-136104256-331064983-93-33-64-12380-5641001265388-6126-2154-4752
Percentage of IncreaseDecreaseInAccountsPayable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value106-42-223-36362028-30-3436-3026027725-4931-20-84-3-6373
Percentage of IncreaseDecreaseInAccountsPayable-441.7-1400.04.556.112.526.346.527.522.1-32.71800.0-53.6-78.80.055.18.4-26.9148.5-516.7-500.06.55.05.4-1575.073.0

us-gaap:IncreaseDecreaseInDerivativeAssetsAndLiabilities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-31
Value3036-28515-7-3217-391023100-4-29-53-40-15161-49143115-8-51-3318
Percentage of IncreaseDecreaseInDerivativeAssetsAndLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInPensionPlanObligations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-31
Value-13150-57-7-115118-8-10-1872-97-3-13020-46-313-64-982781-65-66-234-46
Percentage of IncreaseDecreaseInPensionPlanObligations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInRegulatoryAssetsAndLiabilities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-31
Value14943-61-30-112268-53-82-14843-44-88-128133-22-37-34-5054-934966-132222-74-152
Percentage of IncreaseDecreaseInRegulatoryAssetsAndLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value15239-41-7-130191-37-61-9721-30-71-12290-18-42-40-7750-81437631117135
Percentage of IncreaseDecreaseInRegulatoryAssetsAndLiabilities102.090.767.223.3116.171.369.874.465.548.868.280.795.367.781.8113.5117.6154.092.687.11075.079.0-84.6850.060.8

us-gaap:InvestmentIncomeInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-03-31
Value10643433333423333113424323223223232333332113
Percentage of InvestmentIncomeInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value210010000000000080000
Percentage of InvestmentIncomeInterest20.016.70.00.025.00.00.00.00.00.00.00.00.00.00.00.072.70.00.00.00.0

us-gaap:NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value911910910999161617
Percentage of NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeaseLeaseIncome



Period End2020-03-312019-12-312019-09-302019-06-302019-03-31
Value3950574244
Percentage of OperatingLeaseLeaseIncome100.0100.0100.0100.0100.0

us-gaap:StatementBusinessSegments

dte:PowerAndIndustrialProjects



Period End2020-03-312019-03-31
Value2731
Percentage of OperatingLeaseLeaseIncome69.270.5

us-gaap:OperatingLeaseLeaseIncomeLeasePayments



Period End2020-03-312019-09-302019-06-302019-03-31
Value16171717
Percentage of OperatingLeaseLeaseIncomeLeasePayments100.0100.0100.0100.0

us-gaap:OperatingLeaseVariableLeaseIncome



Period End2020-03-312019-09-302019-06-302019-03-31
Value23402527
Percentage of OperatingLeaseVariableLeaseIncome100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax



Period End2020-03-312019-09-302019-06-302019-03-31
Value1-4-6-3
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax



Period End2020-03-312019-09-302019-06-302019-03-31
Value0-1-2-1
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax0.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-30
Value3-20-32-232-3054454-255140-2213-14124
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.00.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value00000000310000000
Percentage of OtherComprehensiveIncomeLossNetOfTax0.0-0.00.0-0.00.0-0.00.00.0-100.00.00.00.00.00.00.0-0.00.0

us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-312019-06-302019-03-312018-09-302018-06-302018-03-31
Value3-32322
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0-66.7

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-30
Value-33-4-3-4-1-2-3-20-3-3-4-5-41-3-4-3-3-321-2-10-223-333-31
Percentage of OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-30
Value-12-2-1-100-1-11-2-2-2-921-2-2-2-2-211-1102111
Percentage of OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0

us-gaap:OtherNonoperatingExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-03-31
Value463017121176111525771367681278251791063111087979127168723915826814
Percentage of OtherNonoperatingExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value4122141282891525171157129678158991187
Percentage of OtherNonoperatingExpense89.173.382.4100.072.736.881.8100.0100.022.184.683.3100.017.675.085.787.532.088.288.990.014.3100.080.087.5

us-gaap:OtherNonoperatingIncome



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-03-31
Value65919873887199828164746664-153515752545549516055404158464447182116202319282824
Percentage of OtherNonoperatingIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value13292025331123222720211719-421517161814131517151713
Percentage of OtherNonoperatingIncome20.031.920.434.237.515.523.226.833.331.228.425.829.727.529.429.830.833.325.526.529.428.327.342.531.7

us-gaap:ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value1000000.00.01000000.00.01000000.00.01000000.00.01000000.00.01000000.00.01000000.01000000.00.00.00.0
Percentage of ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic100.00.0100.00.0100.00.0100.00.0100.00.0100.00.0100.0100.00.00.00.0

us-gaap:ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDiluted



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value1000000.00.01000000.00.01000000.00.01000000.00.01000000.00.01000000.00.01000000.01000000.00.00.00.0
Percentage of ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDiluted100.00.0100.00.0100.00.0100.00.0100.00.0100.00.0100.0100.00.00.00.0

us-gaap:PaymentsForProceedsFromOtherInvestingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-03-31
Value3201191220-2-26166-426-27-12-7025-716617131072119236618045424
Percentage of PaymentsForProceedsFromOtherInvestingActivities100.0100.00.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value2209108340-23010-542-22-1435-12-2-2178
Percentage of PaymentsForProceedsFromOtherInvestingActivities66.7100.00.081.8111.1800.013.60.0-0.088.50.015.2125.0200.033.381.5116.7-4.320.0171.4-12.5-33.35.953.880.0

us-gaap:PaymentsOfDividendsCommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-03-31
Value195174173173172161150151158148148148148138131131131131124124122122116116116107999595958988888886
Percentage of PaymentsOfDividendsCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value13512412312312411511611511510810810810810510510510598981009993929293
Percentage of PaymentsOfDividendsCommonStock69.271.371.171.172.171.477.376.272.873.073.073.073.076.180.280.280.274.879.080.681.176.279.379.380.2

us-gaap:PaymentsToAcquireBusinessesGross



Period End2020-03-312019-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-31
Value128000001240000
Percentage of PaymentsToAcquireBusinessesGross100.00.00.00.00.00.0100.0100.00.00.00.0

us-gaap:BusinessAcquisition, us-gaap:StatementBusinessSegments

dte:SouthJerseyIndustriesCombinedHeatandPowerGenerationFacility, dte:PowerAndIndustrialProjects



Period End2020-02-18
Value97
Percentage of PaymentsToAcquireBusinessesGross0.0

us-gaap:BusinessAcquisition, us-gaap:StatementBusinessSegments, dei:LegalEntity

dte:HeritageSustainableEnergyRenewableEnergyProjectTwo, dte:Electric, dte:DTESustainableGeneration



Period End2020-01-31
Value33
Percentage of PaymentsToAcquireBusinessesGross0.0

us-gaap:BusinessAcquisition, us-gaap:StatementBusinessSegments, us-gaap:SubsequentEventType, dei:LegalEntity

dte:HeritageSustainableEnergyRenewableEnergyProjectTwo, dte:Electric, us-gaap:SubsequentEvent, dte:DTESustainableGeneration



Period End2020-01-31
Value33
Percentage of PaymentsToAcquireBusinessesGross0.0

us-gaap:PaymentsToAcquireEquityMethodInvestments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312010-12-312009-12-31
Value152190162292312169641051963112407895264026102200
Percentage of PaymentsToAcquireEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0

us-gaap:PaymentsToAcquireNotesReceivable



Period End2020-03-312019-09-302019-06-302019-03-31
Value14191448
Percentage of PaymentsToAcquireNotesReceivable100.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-06-302019-03-312018-06-302018-03-31
Value0-919600
Percentage of PaymentsToAcquireNotesReceivable0.0-650.0200.00.00.0

us-gaap:PaymentsToAcquireOtherInvestments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-31
Value438195200221178378197276337290248310378323396482262260192196250491182208275177140
Percentage of PaymentsToAcquireOtherInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value438195200221178378197276337290248310378323396482262260192196250491182208275
Percentage of PaymentsToAcquireOtherInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToMinorityShareholders



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value10151310211714134119
Percentage of PaymentsToMinorityShareholders100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RetirementPlanType, dei:LegalEntity

us-gaap:PensionExpense

us-gaap:PensionPlansDefinedBenefit, dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312019-03-312018-12-312018-09-302018-06-30
Value2625232210023303030
Percentage of PensionExpense100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value114411314031631436463
Percentage of ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromMinorityShareholders



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value10156891021101216131011
Percentage of ProceedsFromMinorityShareholders100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-03-31
Value-36-27-12-14-26-6-11-6-23-16-38-19-8-291023235-7-5-9-6-7-6-7-172-4-16-7-953-4
Percentage of ProceedsFromPaymentsForOtherFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value-17-20-4-1200-3-4-1-10-4-310-20-2-21-41-6-1-3
Percentage of ProceedsFromPaymentsForOtherFinancingActivities47.27.4-0.028.646.2-0.0-0.050.017.46.226.321.137.5-3.40.0-100.00.0-100.0-66.720.057.1-20.066.716.742.9

us-gaap:ProceedsFromSaleAndMaturityOfOtherInvestments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-31
Value439194198220176393194280336289246311394322394481260258187194246494177204271173136
Percentage of ProceedsFromSaleAndMaturityOfOtherInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value439194198220176393194280336289246311394322394481260258187194246494177204271
Percentage of ProceedsFromSaleAndMaturityOfOtherInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByAssetClass, dei:LegalEntity

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt

dte:NuclearDecommissioningTrustFund, dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value439194198220176393194280
Percentage of ProceedsFromSaleOfAvailableForSaleSecuritiesDebt100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleOfOtherProductiveAssets



Period End2020-03-312019-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-06-302011-03-312010-09-302010-06-302010-03-312009-12-312009-03-31
Value406000003139528341154411134830
Percentage of ProceedsFromSaleOfOtherProductiveAssets100.00.0100.00.00.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProvisionForLoanLossesExpensed



Period End2020-03-312019-03-31
Value3529
Percentage of ProvisionForLoanLossesExpensed100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-03-31
Value1716
Percentage of ProvisionForLoanLossesExpensed48.655.2

us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

dte:OtherFinancingReceivables



Period End2020-03-31
Value1000000.0
Percentage of ProvisionForLoanLossesExpensed2.9

us-gaap:TradeAccountsReceivable



Period End2020-03-31
Value34
Percentage of ProvisionForLoanLossesExpensed97.1

us-gaap:PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-31
Value665678767655765555655556533
Percentage of PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value6556655454446545455555565
Percentage of PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity100.083.3100.0100.085.762.571.466.771.466.780.080.085.783.380.0100.080.0100.083.3100.0100.0100.0100.0100.0100.0

us-gaap:RegulatedAndUnregulatedOperatingRevenue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value3022314831192888351437503550315937533271324528553236287429282262256624872598226829843078259526983930253323872225251623492190201322392163225420182423
Percentage of RegulatedAndUnregulatedOperatingRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems

us-gaap:IntersegmentElimination



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-09-30
Value-124-167-195-181-172-186-201-198-186-139-169-194-202-151-210-1741528-223-236-201-219-230-198-227-209-242-200-217-234
Percentage of RegulatedAndUnregulatedOperatingRevenue-4.1-5.3-6.3-6.3-4.9-5.0-5.7-6.3-5.0-4.2-5.2-6.8-6.2-5.3-7.2-7.761.4-8.6-10.4-6.7-7.1-8.9-7.3-5.8-8.3-10.1-9.0-8.6-10.7

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:IntersegmentElimination, dte:Electric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-09-30
Value-15-13-16-13-14-13-13-13-13-12-11-13-12-11-15-8-9-9-9-9-8-7-7-7-6-7-6-7
Percentage of RegulatedAndUnregulatedOperatingRevenue-0.5-0.4-0.5-0.5-0.4-0.3-0.4-0.4-0.3-0.4-0.3-0.5-0.4-0.4-0.5-0.4-0.4-0.3-0.4-0.3-0.3-0.3-0.2-0.3-0.3-0.3-0.2-0.3

us-gaap:IntersegmentElimination, dte:EnergyTrading



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-09-30
Value-6-6-4-5-7-9-6-5-7-8-8-8-11-11-10-8-9-7-7-9-8-7-9-7-13-12-11-10
Percentage of RegulatedAndUnregulatedOperatingRevenue-0.2-0.2-0.1-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.3-0.3-0.4-0.3-0.4-0.4-0.3-0.3-0.3-0.3-0.3-0.2-0.3-0.5-0.5-0.4-0.5

us-gaap:IntersegmentElimination, dte:Gas



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-09-30
Value-4-4-3-3-2-3-3-4-2-2-1-2-3-1-5-3-1-10-1-1-2-20-2-1-1-1
Percentage of RegulatedAndUnregulatedOperatingRevenue-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.0-0.1-0.1-0.0-0.2-0.1-0.0-0.00.0-0.0-0.0-0.1-0.10.0-0.1-0.0-0.0-0.0

us-gaap:IntersegmentElimination, dte:GasStorageAndPipelines



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-09-30
Value-4-10-11-3-3-7-7-14-8-10-10-15-7-2-2-3-1-1-5-1-1-7-1-12-2-2-1
Percentage of RegulatedAndUnregulatedOperatingRevenue-0.1-0.3-0.4-0.1-0.1-0.2-0.2-0.4-0.2-0.3-0.3-0.5-0.2-0.1-0.1-0.1-0.0-0.0-0.2-0.0-0.0-0.3-0.0-0.00.1-0.1-0.1-0.0

us-gaap:IntersegmentElimination, dte:PowerAndIndustrialProjects



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-09-30
Value-94-134-160-157-145-154-171-162-155-107-138-156-168-126-178-150-186-204-215-180-211-176-206-195-231-185-205-225
Percentage of RegulatedAndUnregulatedOperatingRevenue-3.1-4.3-5.1-5.4-4.1-4.1-4.8-5.1-4.1-3.3-4.3-5.5-5.2-4.4-6.1-6.6-7.5-7.9-9.5-6.0-8.1-6.5-5.2-7.7-9.7-8.3-8.1-10.3

us-gaap:IntersegmentElimination, us-gaap:CorporateAndOther



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-09-30
Value-10-10-10-10-10-10-100-2-2-10-1-11-2187811
Percentage of RegulatedAndUnregulatedOperatingRevenue-0.00.0-0.00.0-0.00.0-0.00.0-0.00.0-0.00.0-0.00.00.0-0.1-0.1-0.00.0-0.0-0.00.0-0.10.00.30.30.30.5

us-gaap:ContractWithCustomerSalesChannel, us-gaap:StatementBusinessSegments

dte:Commercial, dte:Electric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value426437515423421424495446429
Percentage of RegulatedAndUnregulatedOperatingRevenue14.113.916.514.612.011.313.914.111.4

dte:EndUserTransportation, dte:Gas



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value776235428164344985
Percentage of RegulatedAndUnregulatedOperatingRevenue2.52.01.11.52.31.71.01.62.3

dte:GasSales, dte:Gas



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3943168716347732989180457
Percentage of RegulatedAndUnregulatedOperatingRevenue13.010.02.85.613.68.82.55.712.2

dte:Industrial, dte:Electric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value156162175158163163173178176
Percentage of RegulatedAndUnregulatedOperatingRevenue5.25.15.65.54.64.34.95.64.7

dte:IntermediateTransportation, dte:Gas



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value26211515262091118
Percentage of RegulatedAndUnregulatedOperatingRevenue0.90.70.50.50.70.50.30.30.5

dte:Other, dte:Electric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value35973911598158806814
Percentage of RegulatedAndUnregulatedOperatingRevenue1.23.11.34.02.84.22.32.20.4

dte:Other, dte:Gas



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4340182361543215-10
Percentage of RegulatedAndUnregulatedOperatingRevenue1.41.30.60.81.71.40.90.5-0.3

dte:Residential, dte:Electric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value599588791494553551773584586
Percentage of RegulatedAndUnregulatedOperatingRevenue19.818.725.417.115.714.721.818.515.6

us-gaap:ContractWithCustomerSalesChannel, us-gaap:StatementBusinessSegments, dei:LegalEntity

dte:Other, dte:DTESustainableGeneration, dte:DTEElectric



Period End2020-03-31
Value4
Percentage of RegulatedAndUnregulatedOperatingRevenue0.1

us-gaap:ProductOrService, us-gaap:StatementBusinessSegments

dte:AlternativeRevenuePrograms, dte:Gas



Period End2020-03-312019-03-312018-12-312018-09-302018-06-30
Value23-201
Percentage of RegulatedAndUnregulatedOperatingRevenue0.10.1-0.10.00.0

us-gaap:ProductAndServiceOther, dte:Electric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value455545645
Percentage of RegulatedAndUnregulatedOperatingRevenue0.10.20.20.20.10.10.20.10.1

us-gaap:ProductAndServiceOther, dte:Gas



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value212221222
Percentage of RegulatedAndUnregulatedOperatingRevenue0.10.00.10.10.10.00.10.10.1

us-gaap:StatementBusinessSegments

dte:Electric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312013-06-302012-06-30
Value12161284152011901235129615211276120512651290
Percentage of RegulatedAndUnregulatedOperatingRevenue40.240.848.741.235.134.642.840.432.156.964.1

dte:EnergyTrading



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312013-06-302012-06-30
Value91310911105111313011563133211641498451239
Percentage of RegulatedAndUnregulatedOperatingRevenue30.234.735.438.537.041.737.536.839.920.311.9

dte:Gas



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312013-06-302012-06-30
Value540439155243645467164255550248214
Percentage of RegulatedAndUnregulatedOperatingRevenue17.913.95.08.418.412.54.68.114.711.110.6

dte:GasStorageAndPipelines



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312013-06-302012-06-30
Value1701381261211161221221221193127
Percentage of RegulatedAndUnregulatedOperatingRevenue5.64.44.04.23.33.33.43.93.21.41.3

dte:PowerAndIndustrialProjects



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312013-06-302012-06-30
Value307364406402388487612538567429449
Percentage of RegulatedAndUnregulatedOperatingRevenue10.211.613.013.911.013.017.217.015.119.322.3

us-gaap:StatementBusinessSegments, dei:LegalEntity

dte:Electric, dte:DTEElectric



Period End2020-03-31
Value1212
Percentage of RegulatedAndUnregulatedOperatingRevenue40.1

us-gaap:RegulatedOperatingRevenue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value173317011656141718641747166915141740172015731423171816501748143516641512152813571841
Percentage of RegulatedOperatingRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value121212801519119012351296152112761205127514341218117512491608121511531165138511471203
Percentage of RegulatedOperatingRevenue69.975.291.784.066.374.291.184.369.374.191.285.668.475.792.084.769.377.190.684.565.3

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, dte:Electric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value121212791520119012351296152112761205127514341218117512491608121511531164138611481203
Percentage of RegulatedOperatingRevenue69.975.291.884.066.374.291.184.369.374.191.285.668.475.792.084.769.377.090.784.665.3

us-gaap:OperatingSegments, dte:Gas



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value540439155243645467164255550459152220557413160231520358153218647
Percentage of RegulatedOperatingRevenue31.225.89.417.134.626.79.816.831.626.79.715.532.425.09.216.131.223.710.016.135.1

us-gaap:StockholdersEquityOther



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value-2-18-2034-5-24-22-5-15-14010-95-18-15-34-11-11-25-601-48023
Percentage of StockholdersEquityOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0

us-gaap:StatementEquityComponents

us-gaap:CommonStock



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value-2-26-2321-13-17-261-11-10-1021-9-8-11-28-6-7-17-63-4-86437
Percentage of StockholdersEquityOther100.0144.4115.061.8260.070.8118.2-20.073.371.40.0210.09.544.473.382.454.563.668.0105.0-400.0179.20.0160.9

us-gaap:StatementEquityComponents

us-gaap:StockholdersEquityOtherShares

us-gaap:CommonStock



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value403000.095000.090000.0472000.057000.0130000.0345000.0
Percentage of StockholdersEquityOtherShares100.0100.0100.0100.0100.0100.0100.0

us-gaap:TaxesExcludingIncomeAndExciseTaxes



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-03-31
Value11910310192118989997111949197109889291998291911008486879584849480799579778377698082716380
Percentage of TaxesExcludingIncomeAndExciseTaxes100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value83778069847577748173747580687370736373687365666571
Percentage of TaxesExcludingIncomeAndExciseTaxes69.774.879.275.071.276.577.876.373.077.781.377.373.477.379.376.973.776.880.274.773.077.476.774.774.7

us-gaap:UnregulatedOperatingRevenue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value12891447146314711650200318811645201315511672143215181224118082790297510709111143
Percentage of UnregulatedOperatingRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems

us-gaap:IntersegmentElimination



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-124-99-195-181-172-122-201-198-186-83-169-194202-99-210-174-169-169-223-236-201
Percentage of UnregulatedOperatingRevenue-9.6-6.8-13.3-12.3-10.4-6.1-10.7-12.0-9.2-5.4-10.1-13.513.3-8.1-17.8-21.0-18.7-17.3-20.8-25.9-17.6

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, dte:Electric



Period End2020-03-312019-03-31
Value40
Percentage of UnregulatedOperatingRevenue0.30.0

us-gaap:OperatingSegments, dte:EnergyTrading



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value91310911105111313011563133211641498106011749911052768782476549589635524711
Percentage of UnregulatedOperatingRevenue70.875.475.575.778.878.070.870.874.468.370.269.269.362.766.357.660.960.459.357.562.2

us-gaap:OperatingSegments, dte:GasStorageAndPipelines



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value17013812612111612212212211912011511310510363696768615757
Percentage of UnregulatedOperatingRevenue13.29.58.68.27.06.16.57.45.97.76.97.96.98.45.38.37.47.05.76.35.0

us-gaap:OperatingSegments, dte:PowerAndIndustrialProjects



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value307364406402388487612538567497537507548492524444446516585556567
Percentage of UnregulatedOperatingRevenue23.825.227.827.323.524.332.532.728.232.032.135.436.140.244.453.749.452.954.761.049.6

us-gaap:OperatingSegments, us-gaap:CorporateAndOther



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value0-12011020-120101100110
Percentage of UnregulatedOperatingRevenue0.0-0.10.10.00.10.00.00.10.0-0.10.10.00.10.00.10.10.00.00.10.10.0

dei:LegalEntity

us-gaap:UtilitiesOperatingExpenseDepreciationAndAmortization

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value258252244229221220202202212204188180
Percentage of UtilitiesOperatingExpenseDepreciationAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

us-gaap:UtilitiesOperatingExpenseMaintenanceAndOperations

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value360404356334358445360345320360349336383436363332324376330319317309351329342
Percentage of UtilitiesOperatingExpenseMaintenanceAndOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UtilitiesOperatingExpenseProductsAndServices



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value467400360582453434553437396
Percentage of UtilitiesOperatingExpenseProductsAndServices100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value297399322346438386339428355
Percentage of UtilitiesOperatingExpenseProductsAndServices63.699.889.459.596.788.961.397.989.6

dte:InvestmentsByConsolidatedAndNonconsolidatedEntities

us-gaap:VariableInterestEntityOwnershipPercentage

dte:VariableInterestEntityPrimaryBeneficiarySGGRestricted



Period End2020-03-31
Value0.85
Percentage of VariableInterestEntityOwnershipPercentage100.0

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value0.01000000.01000000.01000000.00.00.00.0
Percentage of WeightedAverageNumberDilutedSharesOutstandingAdjustment0.0100.0100.0100.00.00.00.0

dei:EntityCommonStockSharesOutstanding



Period End2020-03-312020-01-242019-09-302019-06-302019-03-312019-01-252018-09-302018-06-302018-03-312018-01-312017-09-302017-06-302017-03-312017-01-312016-09-302016-06-302016-03-312016-01-292015-09-302015-06-302015-03-31
Value192192183183183181181181181179179179179179179179179179179179179
Percentage of EntityCommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType

dei:EntityNumberOfEmployees

us-gaap:WorkforceSubjectToCollectiveBargainingArrangements, us-gaap:LaborForceConcentrationRisk



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value5300.05300.05200.05200.05200.05200.05000.05000.05000.05000.04800.04800.04800.04800.04800.0
Percentage of EntityNumberOfEmployees100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType, dei:LegalEntity

us-gaap:WorkforceSubjectToCollectiveBargainingArrangements, us-gaap:LaborForceConcentrationRisk, dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-30
Value2900.02800.02800.02800.0
Percentage of EntityNumberOfEmployees54.752.853.853.8

us-gaap:BusinessAcquisition, us-gaap:StatementBusinessSegments

dte:BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedCurrentAssetsLiabilitiesNet

dte:SouthJerseyIndustriesCombinedHeatandPowerGenerationFacility, dte:PowerAndIndustrialProjects



Period End2020-02-18
Value3
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedCurrentAssetsLiabilitiesNet100.0

dte:CashCollateralPostedReceivedNet



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value710313-13
Percentage of CashCollateralPostedReceivedNet100.0100.0100.0100.0100.0

us-gaap:FairValueByAssetClass, dei:LegalEntity

dte:DecommissioningFundInvestmentsAccumulatedGrossUnrealizedGainBeforeTax

dte:NuclearDecommissioningTrustFund, dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value270420362356242
Percentage of DecommissioningFundInvestmentsAccumulatedGrossUnrealizedGainBeforeTax100.0100.0100.0100.0100.0

us-gaap:FairValueByAssetClass, us-gaap:FinancialInstrument, dei:LegalEntity

dte:NuclearDecommissioningTrustFund, us-gaap:EquitySecurities, dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value244396335335235
Percentage of DecommissioningFundInvestmentsAccumulatedGrossUnrealizedGainBeforeTax90.494.392.594.197.1

us-gaap:FairValueByAssetClass, dei:LegalEntity

dte:DecommissioningFundInvestmentsAccumulatedGrossUnrealizedLossBeforeTax

dte:NuclearDecommissioningTrustFund, dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value13440545087
Percentage of DecommissioningFundInvestmentsAccumulatedGrossUnrealizedLossBeforeTax100.0100.0100.0100.0100.0

us-gaap:FairValueByAssetClass, us-gaap:FinancialInstrument, dei:LegalEntity

dte:NuclearDecommissioningTrustFund, us-gaap:EquitySecurities, dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value12839534979
Percentage of DecommissioningFundInvestmentsAccumulatedGrossUnrealizedLossBeforeTax95.597.598.198.090.8

dei:LegalEntity

dte:DefinedBenefitPensionPlanLiabilitiesNoncurrentAffiliates

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value7117176116136157186266296338118268868851008985981979976985101711121200
Percentage of DefinedBenefitPensionPlanLiabilitiesNoncurrentAffiliates100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByMeasurementFrequency

dte:DerivativeAssetLiabilityFairValueGrossLiabilityAssetandObligationtoReturnCashandRighttoReclaimCashOffset

us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value0004-10-17-101513182310213026773420354519-9
Percentage of DerivativeAssetLiabilityFairValueGrossLiabilityAssetandObligationtoReturnCashandRighttoReclaimCashOffset0.00.00.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dte:EstimatedCapitalExpendituresandContributionsToEquityMethodInvestees



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value4500590039003900360036003600250030003000
Percentage of EstimatedCapitalExpendituresandContributionsToEquityMethodInvestees100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value2600220022002200190019001900150015001500
Percentage of EstimatedCapitalExpendituresandContributionsToEquityMethodInvestees57.837.356.456.452.852.852.860.050.050.0

us-gaap:ConsolidatedEntities, us-gaap:CreditFacility

dte:FinancingAgreementAmountOutstanding

srt:ParentCompany, dte:DemandFinancingAgreement



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value9611494107799363056
Percentage of FinancingAgreementAmountOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities, us-gaap:CreditFacility

dte:FinancingAgreementMaximumBorrowingCapacity

srt:ParentCompany, dte:DemandFinancingAgreementPlusLetterofCredit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value150150150150150125125125
Percentage of FinancingAgreementMaximumBorrowingCapacity100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

dte:FinancingReceivableOriginatedTwoorMoreYearsbeforeLatestFiscalYear

dte:FinanceLeaseReceivable



Period End2020-03-31
Value44
Percentage of FinancingReceivableOriginatedTwoorMoreYearsbeforeLatestFiscalYear100.0

us-gaap:NotesReceivable



Period End2020-03-31
Value16
Percentage of FinancingReceivableOriginatedTwoorMoreYearsbeforeLatestFiscalYear36.4

us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment

dte:FinanceLeaseReceivable, dte:InternalGradeOne



Period End2020-03-31
Value43
Percentage of FinancingReceivableOriginatedTwoorMoreYearsbeforeLatestFiscalYear97.7

dte:FinanceLeaseReceivable, dte:InternalGradeTwo



Period End2020-03-31
Value1000000.0
Percentage of FinancingReceivableOriginatedTwoorMoreYearsbeforeLatestFiscalYear2.3

us-gaap:NotesReceivable, dte:InternalGradeOne



Period End2020-03-31
Value9
Percentage of FinancingReceivableOriginatedTwoorMoreYearsbeforeLatestFiscalYear20.5

us-gaap:NotesReceivable, dte:InternalGradeTwo



Period End2020-03-31
Value7
Percentage of FinancingReceivableOriginatedTwoorMoreYearsbeforeLatestFiscalYear15.9

dte:GasInventoryEqualization



Period End2020-03-312019-12-312019-06-302019-03-312018-12-312018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-06-302016-03-312015-12-312015-06-302015-03-312014-12-312014-06-302014-03-312013-12-312013-06-302013-03-312012-12-312012-03-312011-12-312011-06-302011-03-312010-12-312010-03-312009-12-31
Value62045880378503586046870561300381420731400114010920401900
Percentage of GasInventoryEqualization100.00.0100.0100.00.0100.0100.00.0100.0100.00.0100.0100.00.0100.0100.00.0100.0100.00.0100.0100.00.0100.00.0100.0100.00.0100.00.0

dte:LettersofCreditReceivedUsedtoOffsetNetDerivativeAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value5462886654334222
Percentage of LettersofCreditReceivedUsedtoOffsetNetDerivativeAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dte:Lettersofcreditthatcouldbeusedtooffsetnetderivativeliabilities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value94254441142132152700072119
Percentage of Lettersofcreditthatcouldbeusedtooffsetnetderivativeliabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0100.0100.0100.0

dei:LegalEntity

dte:OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrentAffiliates

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value359367262254257278240264287311252271290269255273288307356370392520
Percentage of OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrentAffiliates100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dte:PrepaidPostretirementCosts



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value8369748376454590
Percentage of PrepaidPostretirementCosts100.0100.0100.0100.0100.0100.0100.0100.00.0

dei:LegalEntity

dte:PrepaidPostretirementCostsAffiliates

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value266266189189189189113113113113114114114114242424240
Percentage of PrepaidPostretirementCostsAffiliates100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

dte:InvestmentsByConsolidatedAndNonconsolidatedEntities

dte:VariableInterestEntityFutureFundingCommitments

us-gaap:VariableInterestEntityNotPrimaryBeneficiary



Period End2020-03-312019-12-31
Value3363
Percentage of VariableInterestEntityFutureFundingCommitments100.0100.0

dei:LegalEntity

us-gaap:AccountsPayableOtherCurrent

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value431406403421363441391339295416371359384452350313288329360352356366
Percentage of AccountsPayableOtherCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

us-gaap:AccountsPayableRelatedPartiesCurrent

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value92598156717156546152524855585050564041385560
Percentage of AccountsPayableRelatedPartiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

us-gaap:AccountsReceivableRelatedPartiesCurrent

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value92515151141414201615191214981469725331
Percentage of AccountsReceivableRelatedPartiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

us-gaap:AccrualForEnvironmentalLossContingenciesGross

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value88888755668888899910
Percentage of AccrualForEnvironmentalLossContingenciesGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dte:DTEGas



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-31
Value242525273025323740414141414340382223232324
Percentage of AccrualForEnvironmentalLossContingenciesGross300.0312.5312.5337.5375.0357.1640.0740.0666.7683.3512.5512.5512.5537.50.00.0275.0255.6255.6255.6240.0

us-gaap:AccruedEnvironmentalLossContingenciesNoncurrent



Period End2020-03-312019-12-312018-12-31
Value215249205
Percentage of AccruedEnvironmentalLossContingenciesNoncurrent100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312018-12-31
Value215249205
Percentage of AccruedEnvironmentalLossContingenciesNoncurrent100.0100.0100.0

us-gaap:AccumulatedDeferredInvestmentTaxCredit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-31
Value165166163136137138140142122122138138919389936062505052414342444749515356586063656870737578828596
Percentage of AccumulatedDeferredInvestmentTaxCredit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value16416616213513613713814012012013613588908689565845464736
Percentage of AccumulatedDeferredInvestmentTaxCredit99.4100.099.499.399.399.398.698.698.498.498.697.896.796.896.695.793.393.590.092.090.487.8

us-gaap:AdditionalCollateralAggregateFairValue



Period End2020-03-312019-12-312019-09-302019-06-30
Value381527517541
Percentage of AdditionalCollateralAggregateFairValue100.0100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-312007-12-31
Value909193919191757054493936324146424249565351546060565567635962160162168174178196222263262265182
Percentage of AllowanceForDoubtfulAccountsReceivableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-31
Value434648474953433831312320192527242628292731292835
Percentage of AllowanceForDoubtfulAccountsReceivableCurrent47.850.551.651.653.858.257.354.357.463.359.055.659.461.058.757.161.957.151.850.960.853.750.956.5

us-gaap:FairValueByAssetClass, dei:LegalEntity

us-gaap:AlternativeInvestment

dte:NuclearDecommissioningTrustFund, dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value6243343220
Percentage of AlternativeInvestment100.0100.0100.0100.0100.0

us-gaap:AssetRetirementObligationsNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-31
Value272126722576253125002469242823942361232022882261222921972268223822272194218021572022196219111883185418271800178417451719168316411615159115601538153514981499145614201340
Percentage of AssetRetirementObligationsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value2493244723612329229922712228219621652125209420702041201220842057204920202007198618541796
Percentage of AssetRetirementObligationsNoncurrent91.691.691.792.092.092.091.891.791.791.691.591.691.691.691.991.992.092.192.192.191.791.5

us-gaap:FairValueByAssetClass, dei:LegalEntity

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax

dte:NuclearDecommissioningTrustFund, dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value262427217
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax100.0100.0100.0100.0100.0

us-gaap:FairValueByAssetClass, dei:LegalEntity

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax

dte:NuclearDecommissioningTrustFund, dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value61118
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax100.0100.0100.0100.0100.0

us-gaap:FairValueByAssetClass, dei:LegalEntity

us-gaap:AvailableForSaleSecuritiesDebtSecuritiesNoncurrent

dte:NuclearDecommissioningTrustFund, dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value503538544532502
Percentage of AvailableForSaleSecuritiesDebtSecuritiesNoncurrent100.0100.0100.0100.0100.0

us-gaap:StatementGeographical, us-gaap:BusinessAcquisition

us-gaap:BusinessAcquisitionPercentageOfVotingInterestsAcquired

stpr:WV, dte:MidstreamNaturalGasAssets



Period End2020-03-312019-12-312019-09-302018-12-312016-10-01
Value0.850.850.850.550.55
Percentage of BusinessAcquisitionPercentageOfVotingInterestsAcquired100.0100.0100.0100.0100.0

us-gaap:BusinessCombinationContingentConsiderationLiabilityCurrent



Period End2020-03-312019-12-312018-12-31
Value3823790
Percentage of BusinessCombinationContingentConsiderationLiabilityCurrent100.0100.00.0

us-gaap:BusinessAcquisition, us-gaap:StatementBusinessSegments

dte:M5LouisianaGatheringLLC, dte:GasStorageAndPipelines



Period End2020-03-312019-12-31
Value21
Percentage of BusinessCombinationContingentConsiderationLiabilityCurrent0.50.3

us-gaap:BusinessAcquisition, us-gaap:FiniteLivedIntangibleAssetsByMajorClass, us-gaap:StatementBusinessSegments

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles

dte:SouthJerseyIndustriesCombinedHeatandPowerGenerationFacility, us-gaap:CustomerContracts, dte:PowerAndIndustrialProjects



Period End2020-02-18
Value18
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles100.0

us-gaap:BusinessAcquisition, us-gaap:StatementBusinessSegments

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet

dte:SouthJerseyIndustriesCombinedHeatandPowerGenerationFacility, dte:PowerAndIndustrialProjects



Period End2020-02-18
Value97
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet100.0

us-gaap:BusinessAcquisition, us-gaap:StatementBusinessSegments

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment

dte:SouthJerseyIndustriesCombinedHeatandPowerGenerationFacility, dte:PowerAndIndustrialProjects



Period End2020-02-18
Value76
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment100.0

us-gaap:BalanceSheetLocation, us-gaap:FairValueByMeasurementFrequency

us-gaap:CashAndCashEquivalentsFairValueDisclosure

dte:RestrictedCash, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-03-312018-12-312017-12-31
Value1558
Percentage of CashAndCashEquivalentsFairValueDisclosure100.0100.0100.0100.0

us-gaap:CashAndCashEquivalents, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value409410154321
Percentage of CashAndCashEquivalentsFairValueDisclosure40900.00.00.00.080.060.00.0

us-gaap:OtherInvestments, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value11111111101011118111111101011378878716131516
Percentage of CashAndCashEquivalentsFairValueDisclosure1100.00.00.00.0200.0200.00.00.00.0137.50.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:BalanceSheetLocation, us-gaap:FairValueByMeasurementFrequency, dei:LegalEntity

us-gaap:OtherInvestments, us-gaap:FairValueMeasurementsRecurring, dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value1111111110
Percentage of CashAndCashEquivalentsFairValueDisclosure1100.00.00.00.0200.0

us-gaap:FairValueByAssetClass, dei:LegalEntity

dte:NuclearDecommissioningTrustFund, dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value8234995
Percentage of CashAndCashEquivalentsFairValueDisclosure8200.00.00.00.0100.0

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value421152126171633161616161514141461113111014131112111000
Percentage of CashAndCashEquivalentsFairValueDisclosure42100.00.00.00.0340.0320.00.00.00.0200.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value0000223303333333333239951964711568123
Percentage of CashAndCashEquivalentsFairValueDisclosure0.00.00.00.040.040.00.00.00.037.50.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, dei:LegalEntity

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring, dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value111111118
Percentage of CashAndCashEquivalentsFairValueDisclosure1100.00.00.00.0160.0

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value00002
Percentage of CashAndCashEquivalentsFairValueDisclosure0.00.00.00.040.0

us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value421152126191836191619191817171791416141217112621085812568123
Percentage of CashAndCashEquivalentsFairValueDisclosure42100.00.00.00.0380.0360.00.00.00.0237.50.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:FairValueByMeasurementFrequency, dei:LegalEntity

us-gaap:FairValueMeasurementsRecurring, dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value1111111110
Percentage of CashAndCashEquivalentsFairValueDisclosure1100.00.00.00.0200.0

us-gaap:ContractWithCustomerLiability



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value83756583757463675456
Percentage of ContractWithCustomerLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CreditFacility, us-gaap:DebtInstrument

us-gaap:DebtInstrumentCarryingAmount

us-gaap:UnsecuredDebt, dte:UnsecuredTermLoanExpiringinMarch2021



Period End2020-03-31
Value500
Percentage of DebtInstrumentCarryingAmount100.0

us-gaap:CreditFacility, us-gaap:DebtInstrument, us-gaap:SubsequentEventType, dei:LegalEntity

us-gaap:UnsecuredDebt, dte:April2020UnsecuredTermLoanExpiringApril2021, us-gaap:SubsequentEvent, dte:DTEGas



Period End2020-04-28
Value100
Percentage of DebtInstrumentCarryingAmount0.0

us-gaap:UnsecuredDebt, dte:April2020UnsecuredTermLoanOneExpiringApril2021, us-gaap:SubsequentEvent, dte:DTEElectric



Period End2020-04-28
Value200
Percentage of DebtInstrumentCarryingAmount0.0

us-gaap:UnsecuredDebt, dte:April2020UnsecuredTermLoanTwoExpiringApril2021, us-gaap:SubsequentEvent, dte:DTEElectric



Period End2020-04-28
Value0.0
Percentage of DebtInstrumentCarryingAmount0.0

us-gaap:DecommissioningFundInvestments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-31
Value14391661157715611509137815251484148114921439139213641320132112751246123611991267126212411229123711951191113910801083103710299851004937893975961939890859817685
Percentage of DecommissioningFundInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value1439166115771561150913781525148414811492143913921364132013211275124612361199126712621241
Percentage of DecommissioningFundInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByAssetClass, dei:LegalEntity

dte:NuclearDecommissioningTrustFund, dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value14391661157715611378
Percentage of DecommissioningFundInvestments100.0100.0100.0100.0100.0

us-gaap:FairValueByAssetClass, us-gaap:PublicUtility, dei:LegalEntity

dte:NuclearDecommissioningTrustFund, dte:LowLevelRadioactiveWaste, dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value68753
Percentage of DecommissioningFundInvestments0.40.50.40.30.2

dte:NuclearDecommissioningTrustFund, us-gaap:NuclearPlant, dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value14301650156715531372
Percentage of DecommissioningFundInvestments99.499.399.499.599.6

us-gaap:PropertyPlantAndEquipmentByType

us-gaap:DecommissioningLiabilityNoncurrent

dte:NuclearPlantTwo



Period End2045-12-312010-12-31
Value100001300
Percentage of DecommissioningLiabilityNoncurrent100.0100.0

us-gaap:DeferredIncomeTaxLiabilitiesNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-31
Value2553231522572063202919751974193619361888439642934162
Percentage of DeferredIncomeTaxLiabilitiesNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-31
Value2382235523112294227622462210214621272088398538723793
Percentage of DeferredIncomeTaxLiabilitiesNet93.3101.7102.4111.2112.2113.7112.0110.8109.9110.690.790.291.1

us-gaap:DefinedBenefitPensionPlanLiabilitiesNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-31
Value7958086587157228377197277379249221019102211521132113611301133112011841282128049956463065312541355140214981216122413001298680680673866700699881871
Percentage of DefinedBenefitPensionPlanLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsRemainderOfFiscalYear

us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value185050500252588180
Percentage of DefinedBenefitPlanExpectedFutureEmployerContributionsRemainderOfFiscalYear100.00.0100.0100.00.0100.0100.0100.0100.0

us-gaap:RetirementPlanType, dei:LegalEntity

us-gaap:PensionPlansDefinedBenefit, dte:DTEElectric



Period End2020-03-31
Value160
Percentage of DefinedBenefitPlanExpectedFutureEmployerContributionsRemainderOfFiscalYear86.5

us-gaap:BalanceSheetLocation

us-gaap:DerivativeAssetCollateralObligationToReturnCashOffset

dte:CurrentDerivativeAsset



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value0000710105001344430001026
Percentage of DerivativeAssetCollateralObligationToReturnCashOffset0.00.00.00.0100.0100.0100.00.0100.00.00.0100.0100.0100.0100.0100.0100.00.00.00.0100.00.0100.0

dte:NoncurrentDerivativeAsset



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value000037002912003224210000
Percentage of DerivativeAssetCollateralObligationToReturnCashOffset0.00.00.00.042.970.00.00.040.00.00.00.00.075.050.050.0133.30.00.00.00.00.00.0

us-gaap:BalanceSheetLocation

us-gaap:DerivativeAssetFairValueGrossLiability

dte:CurrentDerivativeAsset



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value489513271336187451263213205437225273278396299372415441358417601955566
Percentage of DerivativeAssetFairValueGrossLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dte:NoncurrentDerivativeAsset



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value1228847704962505243526490746582841018589654851115
Percentage of DerivativeAssetFairValueGrossLiability24.917.217.320.826.213.719.024.421.011.928.433.026.616.427.422.624.319.324.915.68.05.320.3

us-gaap:DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value6116013184062465303142652554983013643554683874625235284484826501006707
Percentage of DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BalanceSheetLocation, us-gaap:FairValueByMeasurementFrequency

dte:CurrentAsset, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value489513271336194461264213210437225274281400303376418441358417602955592
Percentage of DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset80.085.485.282.878.987.084.180.482.487.874.875.379.285.578.381.479.983.579.986.592.694.983.7

dte:NoncurrentAsset, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value1228847705269505245617690746884861058790654851
Percentage of DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset20.014.614.817.221.113.015.919.617.612.225.224.720.814.521.718.620.116.520.113.57.45.1

us-gaap:DerivativeInstrumentRisk

dte:ElectricityCommodityContract



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value242225124236128252173146135241148207146157169207299232179249215280291
Percentage of DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset39.637.439.058.152.047.555.155.152.948.449.256.941.133.543.744.857.243.940.051.733.127.841.2

dte:EnvironmentalandOtherCommodityContract



Period End2020-03-312019-12-312018-12-31
Value1631101
Percentage of DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset26.718.30.2

dte:NaturalGasCommodityContract



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value204266189170116277139119118256151155206306209248216285244198389681382
Percentage of DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset33.444.359.441.947.252.344.344.946.351.450.242.658.065.454.053.741.354.054.541.159.867.754.0

us-gaap:ForeignExchangeContract



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value200000102122355559
Percentage of DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset0.30.00.00.00.00.00.30.00.80.20.70.50.81.11.31.11.01.7

us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementFrequency

dte:ElectricityCommodityContract, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value242225124236128252173146135241148207146157169207299232179249215280291
Percentage of DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset39.637.439.058.152.047.555.155.152.948.449.256.941.133.543.744.857.243.940.051.733.127.841.2

dte:EnvironmentalandOtherCommodityContract, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312018-12-31
Value1631101
Percentage of DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset26.718.30.2

dte:NaturalGasCommodityContract, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value204266189170116277139119118256151155206306209248216285244198389681382
Percentage of DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset33.444.359.441.947.252.344.344.946.351.450.242.658.065.454.053.741.354.054.541.159.867.754.0

us-gaap:ForeignExchangeContract, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value200000102122355559
Percentage of DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset0.30.00.00.00.00.00.30.00.80.20.70.50.81.11.31.11.01.7

us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value6116013184062465303142652554983013643554683874625235284484826501006707
Percentage of DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Range, us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:MeasurementInputType, us-gaap:ValuationTechnique

us-gaap:DerivativeAssetLiabilityNetMeasurementInput

srt:Maximum, dte:ElectricityCommodityContract, us-gaap:FairValueInputsLevel3, us-gaap:MeasurementInputCommodityForwardPrice, us-gaap:ValuationTechniqueDiscountedCashFlow



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value5.06.07.07.07.09.09.07.015.0
Percentage of DerivativeAssetLiabilityNetMeasurementInput100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:Maximum, dte:NaturalGasCommodityContract, us-gaap:FairValueInputsLevel3, us-gaap:MeasurementInputCommodityForwardPrice, us-gaap:ValuationTechniqueDiscountedCashFlow



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value4.25.786.175.955.975.595.994.39.75
Percentage of DerivativeAssetLiabilityNetMeasurementInput84.096.388.185.085.362.166.661.465.0

srt:Minimum, dte:ElectricityCommodityContract, us-gaap:FairValueInputsLevel3, us-gaap:MeasurementInputCommodityForwardPrice, us-gaap:ValuationTechniqueDiscountedCashFlow



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value-10.0-10.0-13.0-13.0-7.0-7.0-6.0-7.0-5.0
Percentage of DerivativeAssetLiabilityNetMeasurementInput-200.0-166.7-185.7-185.7-100.0-77.8-66.7-100.0-33.3

srt:Minimum, dte:NaturalGasCommodityContract, us-gaap:FairValueInputsLevel3, us-gaap:MeasurementInputCommodityForwardPrice, us-gaap:ValuationTechniqueDiscountedCashFlow



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value-0.84-1.78-1.55-1.33-0.88-2.15-1.81-1.28-1.1
Percentage of DerivativeAssetLiabilityNetMeasurementInput-16.8-29.7-22.1-19.0-12.6-23.9-20.1-18.3-7.3

srt:WeightedAverage, dte:ElectricityCommodityContract, us-gaap:FairValueInputsLevel3, us-gaap:MeasurementInputCommodityForwardPrice, us-gaap:ValuationTechniqueDiscountedCashFlow



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.00.00.00.00.01.01.00.02.0
Percentage of DerivativeAssetLiabilityNetMeasurementInput0.00.00.00.00.011.111.10.013.3

srt:WeightedAverage, dte:NaturalGasCommodityContract, us-gaap:FairValueInputsLevel3, us-gaap:MeasurementInputCommodityForwardPrice, us-gaap:ValuationTechniqueDiscountedCashFlow



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value-0.07-0.09-0.09-0.08-0.07-0.1-0.12-0.13-0.03
Percentage of DerivativeAssetLiabilityNetMeasurementInput-1.4-1.5-1.3-1.1-1.0-1.1-1.3-1.9-0.2

us-gaap:DerivativeAssetsCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302009-12-31
Value112133751137210297788410376816847565310912990897412868987999729056108123221277222109109122131177209
Percentage of DerivativeAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BalanceSheetLocation

dte:CurrentDerivativeAsset



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value112133751137210297788410376816847129
Percentage of DerivativeAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeAssetsNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302009-12-31
Value5841364622313145585162587334463553544836404429261727262717396375787459495977108116
Percentage of DerivativeAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BalanceSheetLocation

dte:NoncurrentDerivativeAsset



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value584136462231314558516258733454
Percentage of DerivativeAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeCollateralObligationToReturnCash



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value336366
Percentage of DerivativeCollateralObligationToReturnCash100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeCollateralRightToReclaimCash



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value10139121010
Percentage of DerivativeCollateralRightToReclaimCash100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeLiabilitiesCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302009-12-31
Value88836894506779436999423933698547675756625277134148140195589081125146211238158114110127142167220
Percentage of DerivativeLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BalanceSheetLocation

dte:CurrentDerivativeLiability



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value888368945067794369994239336957
Percentage of DerivativeLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeLiabilitiesNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-31
Value4786746852896664584748639398999496862722238192916432116142630629989627490110154184198344
Percentage of DerivativeLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BalanceSheetLocation

dte:NoncurrentDerivativeLiability



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value478674685289666458474863939886
Percentage of DerivativeLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BalanceSheetLocation

us-gaap:DerivativeLiabilityCollateralRightToReclaimCashOffset

dte:CurrentDerivativeLiability



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value00040000152230221282423632352227912
Percentage of DerivativeLiabilityCollateralRightToReclaimCashOffset0.00.00.0100.00.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dte:NoncurrentDerivativeLiability



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value0000000070021201292113161319105
Percentage of DerivativeLiabilityCollateralRightToReclaimCashOffset0.00.00.00.00.00.00.00.046.70.00.09.11200.00.050.039.133.356.5320.059.170.4111.141.7

us-gaap:BalanceSheetLocation

us-gaap:DerivativeLiabilityFairValueGrossAsset

dte:CurrentDerivativeLiability



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value489513271336187451263213205437225273278396299372415441358417601955566
Percentage of DerivativeLiabilityFairValueGrossAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dte:NoncurrentDerivativeLiability



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value1228847704962505243526490746582841018589654851115
Percentage of DerivativeLiabilityFairValueGrossAsset24.917.217.320.826.213.719.024.421.011.928.433.026.616.427.422.624.319.324.915.68.05.320.3

us-gaap:DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value6116013184102365133132652705113193873654894174886005624685176951025698
Percentage of DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BalanceSheetLocation, us-gaap:FairValueByMeasurementFrequency

dte:CurrentDerivativeLiability, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value489513271340187451263213220459255295279424323395478464363439628964578
Percentage of DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset80.085.485.282.979.287.984.080.481.589.879.976.276.486.777.580.979.782.677.684.990.494.082.8

dte:NoncurrentDerivativeLiability, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value12288477049625052505264928665949312298105786761120
Percentage of DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset20.014.614.817.120.812.116.019.618.510.220.123.823.613.322.519.120.317.422.415.19.66.017.2

us-gaap:DerivativeInstrumentRisk

dte:ElectricityCommodityContract



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value242225124240128240172146142246164227158163185212327253190265217298269
Percentage of DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset39.637.439.058.554.246.855.055.152.648.151.458.743.333.344.443.454.545.040.651.331.229.138.5

dte:EnvironmentalandOtherCommodityContract



Period End2020-03-312019-12-312018-12-31
Value1631101
Percentage of DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset26.718.30.2

dte:NaturalGasCommodityContract



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value204266189170107272139119126263151156202321218263258294249215428679395
Percentage of DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset33.444.359.441.545.353.044.444.946.751.547.340.355.365.652.353.943.052.353.241.661.666.256.6

us-gaap:ForeignExchangeContract



Period End2020-03-312019-12-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value200102121233337
Percentage of DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset0.30.00.00.30.00.70.20.60.30.50.60.70.60.51.2

us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementFrequency

dte:ElectricityCommodityContract, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value242225124240128240172146142246164227158163185212327253190265217298269
Percentage of DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset39.637.439.058.554.246.855.055.152.648.151.458.743.333.344.443.454.545.040.651.331.229.138.5

dte:EnvironmentalandOtherCommodityContract, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312018-12-31
Value1631101
Percentage of DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset26.718.30.2

dte:NaturalGasCommodityContract, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value204266189170107272139119126263151156202321218263258294249215428679395
Percentage of DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset33.444.359.441.545.353.044.444.946.751.547.340.355.365.652.353.943.052.353.241.661.666.256.6

us-gaap:ForeignExchangeContract, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value2000102121233337
Percentage of DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset0.30.00.00.00.30.00.70.20.60.30.50.60.70.60.51.2

us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value6116013184102365133132652705113193873654894174886005624685176951025698
Percentage of DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EnergyRelatedInventory



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value294373413334195406390313237399453353286416467385351480533423333512511342208363467527
Percentage of EnergyRelatedInventory100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value205187180179116171145165138190182184178225231233232271267270260269
Percentage of EnergyRelatedInventory69.750.143.653.659.542.137.252.758.247.640.252.162.254.149.560.566.156.550.163.878.152.5

us-gaap:EquityMethodInvestments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-312013-12-31
Value1867186218391758177217711670132611411073971941868752706633542514434415
Percentage of EquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dte:InvestmentsByConsolidatedAndNonconsolidatedEntities

us-gaap:VariableInterestEntityNotPrimaryBeneficiary



Period End2020-03-312019-12-31
Value15101503
Percentage of EquityMethodInvestments80.980.7

us-gaap:InvestmentType

us-gaap:FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments

us-gaap:PrivateEquityFunds



Period End2020-03-312019-12-31
Value159151
Percentage of FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueNetAssetLiability

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value156914621218121712001069123211591158122711681116109110751047994860896851894868892891902862878843789
Percentage of FairValueNetAssetLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value430395555529540528550566544477500493491408451439530515519544568655494572514507520490
Percentage of FairValueNetAssetLiability27.427.045.643.545.049.444.648.847.038.942.844.245.038.043.144.261.657.561.060.965.473.455.463.459.657.761.762.1

us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value244-289-33-44-50-23-19-97-6-23-88-107-69-57-423-4-1224-42-40-43-36-4-13
Percentage of FairValueNetAssetLiability1.50.3-2.30.7-2.8-4.1-4.1-2.0-1.6-0.70.6-0.5-2.1-8.2-10.2-6.9-6.6-0.42.7-0.4-1.42.7-4.7-4.4-5.0-4.1-0.5-1.6

us-gaap:FairValueMeasuredAtNetAssetValuePerShare, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value62433432232011105
Percentage of FairValueNetAssetLiability4.02.92.82.61.91.90.90.90.4

us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value2085190417791791172015561742171217031713169316261569141614211390141314411413146914691590138114361331134013501266
Percentage of FairValueNetAssetLiability132.9130.2146.1147.2143.3145.6141.4147.7147.1139.6144.9145.7143.8131.7135.7139.8164.3160.8166.0164.3169.2178.3155.0159.2154.4152.6160.1160.5

us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs

dte:ElectricityCommodityContract, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value1516810-25-2-10-13-131276-69-6-6-16633-5
Percentage of FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dte:NaturalGasCommodityContract, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value8-15-41-10-10-49-46-25-10-29-2-17-15-96-100-62-34-521-830
Percentage of FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs53.3-93.8-512.5-100.040.02450.0460.0192.376.9-241.7-28.6-283.3250.0-1066.71666.71033.3212.5-83.3700.0-266.7-600.0

dte:OtherCommodityContract, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value1359276154825-2-1-1-1-7-5-11-1
Percentage of FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs6.718.862.590.0-8.0-350.0-60.0-115.4-30.866.728.683.333.3-11.116.716.743.8-83.3-33.333.320.0

us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value244-289-33-44-50-23-19-97-6-23-88-107-69-57-423-424
Percentage of FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs160.025.0-350.090.0132.02200.0500.0176.9146.2-75.0100.0-100.0383.3-977.81783.31150.0356.2-66.7766.7-133.3-480.0

us-gaap:FairValueByMeasurementFrequency, dei:LegalEntity

us-gaap:FairValueMeasurementsRecurring, dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value13592661559
Percentage of FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs6.718.862.590.0-8.0-300.0-60.0-115.4-38.575.0

us-gaap:FinanceLeaseLiabilityNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value10114567
Percentage of FinanceLeaseLiabilityNoncurrent100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value344567
Percentage of FinanceLeaseLiabilityNoncurrent30.036.4100.0100.0100.0100.0

us-gaap:FinancingReceivableAllowanceForCreditLosses



Period End2020-03-312020-01-01
Value9091
Percentage of FinancingReceivableAllowanceForCreditLosses100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312020-01-01
Value4346
Percentage of FinancingReceivableAllowanceForCreditLosses47.850.5

us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:TradeAccountsReceivable



Period End2020-03-312020-01-01
Value8687
Percentage of FinancingReceivableAllowanceForCreditLosses95.695.6

us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:FinancingReceivableOriginatedInCurrentFiscalYear

dte:FinanceLeaseReceivable



Period End2020-03-31
Value133
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear100.0

us-gaap:NotesReceivable



Period End2020-03-31
Value12
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear9.0

us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment

dte:FinanceLeaseReceivable, dte:InternalGradeOne



Period End2020-03-31
Value0.0
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.0

dte:FinanceLeaseReceivable, dte:InternalGradeTwo



Period End2020-03-31
Value133
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear100.0

us-gaap:NotesReceivable, dte:InternalGradeOne



Period End2020-03-31
Value2
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear1.5

us-gaap:NotesReceivable, dte:InternalGradeTwo



Period End2020-03-31
Value10
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear7.5

us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear

dte:FinanceLeaseReceivable



Period End2020-03-31
Value0.0
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear0.0

us-gaap:NotesReceivable



Period End2020-03-31
Value40
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear0.0

us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment

dte:FinanceLeaseReceivable, dte:InternalGradeOne



Period End2020-03-31
Value0.0
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear0.0

dte:FinanceLeaseReceivable, dte:InternalGradeTwo



Period End2020-03-31
Value0.0
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear0.0

us-gaap:NotesReceivable, dte:InternalGradeOne



Period End2020-03-31
Value9
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear0.0

us-gaap:NotesReceivable, dte:InternalGradeTwo



Period End2020-03-31
Value31
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear0.0

us-gaap:CounterpartyName, us-gaap:GuaranteeObligationsByNature

us-gaap:GuaranteeObligationsMaximumExposure

dte:DTEGas, dte:NEXUSPipeline



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value226226242242242242
Percentage of GuaranteeObligationsMaximumExposure100.0100.0100.0100.0100.0100.0

dte:TexasEasternTransmissionLP, dte:NEXUSPipeline



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value360360377377377377
Percentage of GuaranteeObligationsMaximumExposure159.3159.3155.8155.8155.8155.8

us-gaap:GuaranteeObligationsByNature

dte:ReducedEmissionsFuelGuarantees



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value547549491476380359468453420386364340308279341323270268238210192172150
Percentage of GuaranteeObligationsMaximumExposure242.0242.9202.9196.7157.0148.30.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

dte:SyntheticFuel



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value40040040040040040040040040062062062062062062085085085085085085010001000
Percentage of GuaranteeObligationsMaximumExposure177.0177.0165.3165.3165.3165.30.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:GuaranteeTypeOther



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value5656565664645656555555555555555556566666636060
Percentage of GuaranteeObligationsMaximumExposure24.824.823.123.126.426.40.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RelatedPartyTransactionsByRelatedParty, dei:LegalEntity

us-gaap:IncomeTaxReceivable

srt:ParentCompany, dte:DTEElectric



Period End2020-03-312019-12-312019-06-302018-12-31
Value81498
Percentage of IncomeTaxReceivable100.0100.0100.0100.0

us-gaap:InterestPayableCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value1691471531411491271431131321111311051319611591119891199111686110861189011497123931229412195121101134111114
Percentage of InterestPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value83848184817478747072706672656963666268626658
Percentage of InterestPayableCurrent49.157.152.959.654.458.354.565.553.064.953.462.955.067.760.069.255.569.757.168.156.967.4

us-gaap:JuniorSubordinatedLongTermNotes



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value11461146114611461146114511451145114511457567567567567807804804804804804804804804804804804804804804802802802802800
Percentage of JuniorSubordinatedLongTermNotes100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:LineOfCredit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value13621057915182351777236621856745791522198653554314532629370170255602853
Percentage of LineOfCredit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value7135438200149511303802383113265962002112724600
Percentage of LineOfCredit5.233.541.70.00.019.221.620.944.431.939.362.529.89.50.00.039.743.212.40.00.0

dte:DTEGas



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value1531942323791892616725530025094018013908319412800
Percentage of LineOfCredit11.218.425.41.622.524.311.026.929.840.331.618.00.027.625.10.015.630.834.60.00.0

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value1138509301179272439159324
Percentage of LineOfCredit83.648.232.998.477.556.567.452.2

us-gaap:ConsolidatedEntities, us-gaap:CreditFacility

srt:ParentCompany, us-gaap:CommercialPaper



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value1072801100772710177
Percentage of LineOfCredit7.926.512.00.021.934.90.028.5

srt:ParentCompany, us-gaap:LetterOfCredit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value231229191179195168159147
Percentage of LineOfCredit17.021.720.998.455.621.667.423.7

srt:ParentCompany, us-gaap:RevolvingCreditFacility



Period End2020-03-31
Value300
Percentage of LineOfCredit22.0

srt:ParentCompany, us-gaap:UnsecuredDebt



Period End2020-03-31
Value500
Percentage of LineOfCredit36.7

us-gaap:CreditFacility

us-gaap:CommercialPaper



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-312014-09-30
Value18182872431566097747463562165942059499410175365499185398653
Percentage of LineOfCredit13.378.379.11.644.478.432.676.374.283.483.380.529.876.474.055.768.679.350.066.176.6

us-gaap:LetterOfCredit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value231229191179195168159147221124132102139154144139167130185170255204200
Percentage of LineOfCredit17.021.720.998.455.621.667.423.725.816.616.719.570.223.626.044.331.420.750.0100.0100.033.923.4

us-gaap:RevolvingCreditFacility



Period End2020-03-31
Value450
Percentage of LineOfCredit33.0

us-gaap:UnsecuredDebt



Period End2020-03-31
Value500
Percentage of LineOfCredit36.7

us-gaap:CreditFacility, dei:LegalEntity

us-gaap:CommercialPaper, dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-30
Value713543820
Percentage of LineOfCredit5.233.541.70.0

us-gaap:CommercialPaper, dte:DTEGas



Period End2020-03-312019-12-312019-09-302019-06-30
Value31942323
Percentage of LineOfCredit0.218.425.41.6

us-gaap:RevolvingCreditFacility, dte:DTEElectric



Period End2020-03-31
Value0.0
Percentage of LineOfCredit0.0

us-gaap:RevolvingCreditFacility, dte:DTEGas



Period End2020-03-31
Value150
Percentage of LineOfCredit11.0

us-gaap:UnsecuredDebt, dte:DTEElectric



Period End2020-03-31
Value0.0
Percentage of LineOfCredit0.0

us-gaap:UnsecuredDebt, dte:DTEGas



Period End2020-03-31
Value0.0
Percentage of LineOfCredit0.0

us-gaap:LineOfCreditFacilityRemainingBorrowingCapacity



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value169815031645233817691343188414991264137513291598192214171516175615381441170019551770142311721306145516001469157518021560168917141378137815561705184116721733
Percentage of LineOfCreditFacilityRemainingBorrowingCapacity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value429146118500400251349270201628974341338400400189128354400300
Percentage of LineOfCreditFacilityRemainingBorrowingCapacity25.39.77.221.422.618.718.518.01.611.86.74.617.723.926.422.812.38.920.820.516.9

dte:DTEGas



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value1471066829722111127413345050206300120161300217106172300300
Percentage of LineOfCreditFacilityRemainingBorrowingCapacity8.77.14.112.712.58.314.58.93.60.03.812.915.68.510.617.114.17.410.115.316.9

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value1122125114591541114898112611096
Percentage of LineOfCreditFacilityRemainingBorrowingCapacity66.183.288.765.964.973.066.973.1

us-gaap:LongTermDebtAndCapitalLeaseObligations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-31
Value17026159351385813569127761213413620127051218512185117951135811758112699478934387588835885688358838834379097813692372146846680672187014712072127093718774977507701570897074729573707741
Percentage of LongTermDebtAndCapitalLeaseObligations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value7641655268517183718465456537653760186018601755825882588558845747545054885500564356445144
Percentage of LongTermDebtAndCapitalLeaseObligations44.941.149.452.956.253.948.051.549.449.451.049.150.052.262.161.562.262.162.163.963.961.7

us-gaap:LongTermDebtAndCapitalLeaseObligationsCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-31
Value3876871206149814991499151061091094121314151654624734684671662742742291069898896879840817633848530526247326899925923677671362
Percentage of LongTermDebtAndCapitalLeaseObligationsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value336636336344122553055661481481571531211118
Percentage of LongTermDebtAndCapitalLeaseObligationsCurrent86.892.627.90.20.30.3100.040.01.94.64.674.038.542.940.089.732.033.232.72.66.643.1

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis

us-gaap:LongTermDebtFairValue

us-gaap:FairValueInputsLevel1, us-gaap:EstimateOfFairValueFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value21202572127719891960179618401889187419391554155315051465802807495496480486500489425
Percentage of LongTermDebtFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueInputsLevel2, us-gaap:EstimateOfFairValueFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value12108142071421612915116151071211094100921013610571105221024198749384858885388353813682898527858183087551
Percentage of LongTermDebtFairValue571.1552.41113.2649.3592.6596.4602.9534.3540.9545.2677.1659.4656.1640.51070.81058.01687.51640.31726.91754.51716.21699.01776.7

us-gaap:FairValueInputsLevel3, us-gaap:EstimateOfFairValueFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value382412521138138514311317930112281376474483010441056132214381299120311869151051706499
Percentage of LongTermDebtFairValue180.448.789.169.673.073.350.559.443.439.447.953.469.472.1164.8178.2262.4242.5247.1188.3210.2144.4117.4

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis, dei:LegalEntity

us-gaap:FairValueInputsLevel2, us-gaap:EstimateOfFairValueFairValueDisclosure, dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value73737916799677496552
Percentage of LongTermDebtFairValue347.8307.8626.2389.6364.8

us-gaap:FairValueInputsLevel3, us-gaap:EstimateOfFairValueFairValueDisclosure, dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value1330173176167161
Percentage of LongTermDebtFairValue62.76.713.88.49.0

us-gaap:FairValueByMeasurementBasis

us-gaap:CarryingReportedAmountFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value1739816606150561505814265136221362112708122891228811897117621176211270948194889201928593109287898986068094
Percentage of LongTermDebtFairValue820.7645.61179.0757.1727.8758.5740.3672.7655.8633.7765.6757.4781.5769.31182.21175.71858.81872.01939.61910.91797.81759.91904.5

us-gaap:FairValueByMeasurementBasis, dei:LegalEntity

us-gaap:CarryingReportedAmountFairValueDisclosure, dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value79707180717971786538
Percentage of LongTermDebtFairValue375.9279.2562.2360.9364.0

us-gaap:NotesAndLoansReceivableNetNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value2172021931681586467697073747071737577798582828890879092102104106109112114117120123124123
Percentage of NotesAndLoansReceivableNetNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dte:InvestmentsByConsolidatedAndNonconsolidatedEntities

us-gaap:VariableInterestEntityNotPrimaryBeneficiary



Period End2020-03-312019-12-31
Value2821
Percentage of NotesAndLoansReceivableNetNoncurrent12.910.4

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis

us-gaap:NotesPayableFairValueDisclosure

us-gaap:FairValueInputsLevel3, us-gaap:EstimateOfFairValueFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value1525272930411111121216171817150
Percentage of NotesPayableFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis, dei:LegalEntity

us-gaap:FairValueInputsLevel3, us-gaap:EstimateOfFairValueFairValueDisclosure, dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value1121232321
Percentage of NotesPayableFairValueDisclosure73.384.085.279.351.2

us-gaap:FairValueByMeasurementBasis

us-gaap:CarryingReportedAmountFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value1525272930411111121216171817150
Percentage of NotesPayableFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:FairValueByMeasurementBasis, dei:LegalEntity

us-gaap:CarryingReportedAmountFairValueDisclosure, dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value1121232321
Percentage of NotesPayableFairValueDisclosure73.384.085.279.351.2

dei:LegalEntity

us-gaap:NotesPayableRelatedPartiesClassifiedCurrent

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value139979729551101143751421166678205117112108977568543584
Percentage of NotesPayableRelatedPartiesClassifiedCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis

us-gaap:NotesReceivableFairValueDisclosure

us-gaap:FairValueInputsLevel3, us-gaap:EstimateOfFairValueFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value68184178153143403737373836333136333232323434354141
Percentage of NotesReceivableFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis, dei:LegalEntity

us-gaap:FairValueInputsLevel3, us-gaap:EstimateOfFairValueFairValueDisclosure, dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value11914106
Percentage of NotesReceivableFairValueDisclosure16.24.97.96.515.0

us-gaap:FairValueByMeasurementBasis

us-gaap:CarryingReportedAmountFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value68184178153143403737373836333136333232323434354141
Percentage of NotesReceivableFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByMeasurementBasis, dei:LegalEntity

us-gaap:CarryingReportedAmountFairValueDisclosure, dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value11914106
Percentage of NotesReceivableFairValueDisclosure16.24.97.96.515.0

us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:NotesReceivableGross

dte:FinanceLeaseReceivable



Period End2020-03-31
Value177
Percentage of NotesReceivableGross100.0

us-gaap:NotesReceivable



Period End2020-03-31
Value68
Percentage of NotesReceivableGross38.4

us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, dei:LegalEntity

dte:FinanceLeaseReceivable, dte:DTEElectric



Period End2020-03-31
Value0.0
Percentage of NotesReceivableGross0.0

us-gaap:NotesReceivable, dte:DTEElectric



Period End2020-03-31
Value11
Percentage of NotesReceivableGross6.2

us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment

dte:FinanceLeaseReceivable, dte:InternalGradeOne



Period End2020-03-31
Value43
Percentage of NotesReceivableGross24.3

dte:FinanceLeaseReceivable, dte:InternalGradeTwo



Period End2020-03-31
Value134
Percentage of NotesReceivableGross75.7

us-gaap:NotesReceivable, dte:InternalGradeOne



Period End2020-03-31
Value20
Percentage of NotesReceivableGross11.3

us-gaap:NotesReceivable, dte:InternalGradeTwo



Period End2020-03-31
Value48
Percentage of NotesReceivableGross27.1

us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment, dei:LegalEntity

dte:FinanceLeaseReceivable, dte:InternalGradeOne, dte:DTEElectric



Period End2020-03-31
Value0.0
Percentage of NotesReceivableGross0.0

dte:FinanceLeaseReceivable, dte:InternalGradeTwo, dte:DTEElectric



Period End2020-03-31
Value0.0
Percentage of NotesReceivableGross0.0

us-gaap:NotesReceivable, dte:InternalGradeOne, dte:DTEElectric



Period End2020-03-31
Value11
Percentage of NotesReceivableGross6.2

us-gaap:NotesReceivable, dte:InternalGradeTwo, dte:DTEElectric



Period End2020-03-31
Value0.0
Percentage of NotesReceivableGross0.0

us-gaap:OperatingLeaseLiabilityCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-31
Value3233343433
Percentage of OperatingLeaseLiabilityCurrent100.0100.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-31
Value1212131314
Percentage of OperatingLeaseLiabilityCurrent37.536.438.238.242.4

us-gaap:OperatingLeaseLiabilityNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-31
Value12412710510298
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-31
Value6567454850
Percentage of OperatingLeaseLiabilityNoncurrent52.452.842.947.151.0

us-gaap:OtherAssetsMiscellaneousNoncurrent



Period End2020-03-312019-12-312018-12-31
Value190182160
Percentage of OtherAssetsMiscellaneousNoncurrent100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312018-12-31
Value149143121
Percentage of OtherAssetsMiscellaneousNoncurrent78.478.675.6

dte:InvestmentsByConsolidatedAndNonconsolidatedEntities

us-gaap:OtherLiabilities

dte:VariableInterestEntityPrimaryBeneficiaryRestricted



Period End2020-03-312019-12-31
Value1314
Percentage of OtherLiabilities100.0100.0

dte:VariableInterestEntityPrimaryBeneficiarySGGRestricted



Period End2020-03-312019-12-31
Value67
Percentage of OtherLiabilities46.250.0

us-gaap:OtherLongTermDebtNoncurrent



Period End2020-03-312019-12-312018-12-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-31
Value1587014778109820289289289289289289289289
Percentage of OtherLongTermDebtNoncurrent100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherLongTermInvestments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-31
Value228265253247238219241231230232224217210201199193191186684654649628618604596603584574568554537533532525527526521518467477598595
Percentage of OtherLongTermInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value353836363534403536363535343633313435343436172
Percentage of OtherLongTermInvestments15.414.314.214.614.715.516.615.215.715.515.616.116.217.916.616.117.818.85.05.25.527.4

us-gaap:OtherReceivablesNetCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value2602452649372108831471169816692101718782807279113739412012614012781126
Percentage of OtherReceivablesNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value384162422554407139378648382948344340383815
Percentage of OtherReceivablesNetCurrent14.616.723.545.234.750.048.248.333.637.851.852.237.640.855.241.553.855.648.133.616.0

dei:LegalEntity

us-gaap:OtherShortTermBorrowings

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value713543820014951130380238311326596200211272460050
Percentage of OtherShortTermBorrowings100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.00.00.0100.0

us-gaap:OtherSundryLiabilitiesNoncurrent



Period End2020-03-312019-12-312018-12-31
Value382427364
Percentage of OtherSundryLiabilitiesNoncurrent100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312018-12-31
Value808488
Percentage of OtherSundryLiabilitiesNoncurrent20.919.724.2

dei:LegalEntity

us-gaap:PrepaidTaxes

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-302018-03-312017-12-312017-09-302017-03-312016-12-312016-09-302016-03-312015-12-312015-09-302015-03-312014-12-31
Value96521168747111914810789451018444968244
Percentage of PrepaidTaxes100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

us-gaap:RatioOfIndebtednessToNetCapital1

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value0.530.510.520.510.510.50.510.510.510.50.510.510.50.50.50.510.510.510.50.50.52
Percentage of RatioOfIndebtednessToNetCapital1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dte:DTEGas



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-31
Value0.470.480.460.470.460.480.50.450.460.480.480.470.450.450.440.470.480.470.47
Percentage of RatioOfIndebtednessToNetCapital188.794.188.592.290.296.098.088.290.296.094.192.290.090.086.392.296.094.090.4

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0.590.580.570.570.550.550.540.54
Percentage of RatioOfIndebtednessToNetCapital1111.3113.7109.6111.8107.8110.0105.9105.9

us-gaap:RegulatoryAssetsCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-312009-12-31
Value2152279117153905744556122642651136321512397691127130264990175182157194232314201-100-53
Percentage of RegulatoryAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value17522781021488956405058113657925173103846
Percentage of RegulatoryAssetsCurrent81.0100.0100.098.787.296.798.998.290.990.983.366.742.385.787.781.869.453.120.083.397.460.5

us-gaap:RegulatoryAssetsNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-31
Value435641714057450845204568368937293715372338283861383338713686372936993692371936883643365127042719279228373700379038194235429943904423453939403905398040584056409941104231
Percentage of RegulatoryAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value3653344833403787379138293003303530093005310831293090311329602998298129693002296729142913
Percentage of RegulatoryAssetsNoncurrent83.982.782.384.083.983.881.481.481.080.781.281.080.680.480.380.480.680.480.780.580.079.8

us-gaap:RegulatoryLiabilityCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-312011-12-312010-12-312009-12-31
Value6165553795126343923188661373438373041677879153164150175302230-89-54-94-52
Percentage of RegulatoryLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dte:DTEElectric



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value574028288798132621177056332721342719366173150
Percentage of RegulatoryLiabilityCurrent93.461.550.975.791.677.838.266.791.394.481.491.889.279.455.391.990.046.353.778.292.498.0

us-gaap:RegulatoryLiabilityNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-31
Value324432643313288028952922302930383001287548955156355555257258556959863866566771575782986290795499710319901007101810191040978138213281378136213371202
Percentage of RegulatoryLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0