NRG


Line plots across dimensions of each concept
Tables

Table of contents



us-gaap:CommonStockValue

us-gaap:CommonStockSharesIssued
us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents, us-gaap:SubsequentEventType

us-gaap:CommonStockSharesOutstanding
us-gaap:SubsequentEventType

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:IncomeLossFromContinuingOperationsPerBasicShare

us-gaap:IncomeLossFromContinuingOperationsPerDilutedShare

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:MajorCustomers, us-gaap:ProductOrService
us-gaap:ConsolidationItems, us-gaap:MajorCustomers, us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems, us-gaap:ProductOrService
us-gaap:ConsolidationItems, us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:MajorCustomers, us-gaap:ProductOrService
us-gaap:ProductOrService

us-gaap:Revenues
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:ProductOrService
us-gaap:ConsolidationItems, us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:ProductOrService

us-gaap:CostOfRevenue
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:CostsAndExpenses
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:ResearchAndDevelopmentExpense
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:SellingGeneralAndAdministrativeExpense
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:OperatingIncomeLoss
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:InterestExpense
us-gaap:ConsolidatedEntities

us-gaap:OtherNonoperatingIncomeExpense
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest

us-gaap:NonoperatingIncomeExpense
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:IncomeTaxExpenseBenefit
us-gaap:ConsolidatedEntities

us-gaap:ProfitLoss

us-gaap:ComprehensiveIncomeNetOfTax
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:NetIncomeLoss
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted

us-gaap:Assets
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:Liabilities
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:LiabilitiesAndStockholdersEquity
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:AssetsCurrent
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:CashAndCashEquivalentsAtCarryingValue
us-gaap:ConsolidatedEntities

us-gaap:AccountsReceivableNetCurrent
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:InventoryNet
us-gaap:ConsolidatedEntities

us-gaap:PrepaidExpenseAndOtherAssetsCurrent
us-gaap:ConsolidatedEntities

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:PropertyPlantAndEquipmentNet
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities
us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures
us-gaap:ConsolidationItems

us-gaap:Goodwill
us-gaap:ConsolidatedEntities

us-gaap:FiniteLivedIntangibleAssetsNet
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:OtherAssetsNoncurrent
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:LiabilitiesCurrent
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:LongTermDebtCurrent
us-gaap:ConsolidatedEntities

us-gaap:AccountsPayableCurrent
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:OtherAccruedLiabilitiesCurrent
us-gaap:ConsolidatedEntities

us-gaap:LiabilitiesNoncurrent
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:LongTermDebt

us-gaap:LongTermDebtNoncurrent
us-gaap:ConsolidatedEntities

us-gaap:OtherLiabilitiesNoncurrent
us-gaap:ConsolidatedEntities

us-gaap:CommonStockValue

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:TreasuryStockValue

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:NetCashProvidedByUsedInOperatingActivities
us-gaap:ConsolidatedEntities

us-gaap:NetCashProvidedByUsedInInvestingActivities
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:NetCashProvidedByUsedInFinancingActivities
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:NetCashProvidedByUsedInOperatingActivities
us-gaap:ConsolidatedEntities

us-gaap:NetIncomeLoss
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:ProfitLoss

us-gaap:DepreciationDepletionAndAmortization
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:NetCashProvidedByUsedInInvestingActivities
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment
us-gaap:ConsolidatedEntities

us-gaap:NetCashProvidedByUsedInFinancingActivities
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:ShareBasedCompensation
us-gaap:ConsolidatedEntities

us-gaap:OperatingLeaseRightOfUseAsset
us-gaap:ConsolidatedEntities

nrg:AmortizationOfIntangiblesAndOutOfMarketContracts
us-gaap:ConsolidatedEntities

nrg:AssetImpairmentChargesIncludingEquityMethodInvestments

nrg:ChangesInCollateralDepositsSupportingEnergyRiskManagementActivities
us-gaap:ConsolidatedEntities

nrg:ChangesInNuclearDecommissioningTrustLiability
us-gaap:ConsolidatedEntities
us-gaap:Range
nrg:CommonStockAnnualDividendGrowthRate
us-gaap:Range, us-gaap:StatementScenario

nrg:CommonStockDividendsProposedAnnualAmountPerShare
us-gaap:StatementScenario
us-gaap:StatementScenario, us-gaap:SubsequentEventType

nrg:ContractwithCustomerLiabilityIncreaseForCashPaymentsReceived

nrg:DerivativeUnrealizedGainsOnOpenPositionsRelatedToTradingActivityNet
us-gaap:ConsolidatedEntities
nrg:EquityInEarningsOfConsolidatedSubsidiaries
us-gaap:ConsolidationItems

nrg:GainsLossesOnExtinguishmentOfDebtNonCashPortion
us-gaap:ConsolidatedEntities

nrg:ImpairmentLosses
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities
nrg:IntercompanyDividendProceedsFinancing
us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities
nrg:IntercompanyDividendProceedsInvesting
us-gaap:ConsolidationItems

nrg:InvestmentsInProceedsFromSalesOfUnconsolidatedAffiliates

nrg:NetContributionsToDistributionsFromDiscontinuedOperations

nrg:OtherComprehensiveIncomeLossNetOfTaxAndAdjustmentForNewAccountingStandard
us-gaap:StatementEquityComponents

nrg:PaymentsForProceedsFromIntangibleAssets
us-gaap:ConsolidatedEntities

nrg:ProceedsFromSaleOfAssetsAndSaleOfDiscontinuedOperationsNet

nrg:ReversalPreviouslyRecognizedUnrealizedGainsLossesAcquiredasPartofAcquisitionEconomicHedges

nrg:ReversalPreviouslyRecognizedUnrealizedGainsLossesSettledPositionsEconomicHedges

nrg:ReversalPreviouslyUnrecognizedUnrealizedGainsLossesSettledPositionsTradingActivity

nrg:UnrealizedGainLossOnDerivativesMarkToMarketEconomicHedgingActivities
us-gaap:ConsolidationItems, us-gaap:ProductOrService
us-gaap:ConsolidationItems, us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
us-gaap:ProductOrService

nrg:UnrealizedGainLossonDerivativesMarkToMarketTradingActivities

us-gaap:AccretionExpenseIncludingAssetRetirementObligations
us-gaap:ConsolidatedEntities

us-gaap:AdjustmentsToAdditionalPaidInCapitalOther
us-gaap:StatementEquityComponents

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
us-gaap:StatementEquityComponents

us-gaap:AmortizationOfFinancingCostsAndDiscounts
us-gaap:ConsolidatedEntities

us-gaap:AmortizationOfPowerContractsEmissionCredits
us-gaap:ConsolidatedEntities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
us-gaap:ConsolidatedEntities

us-gaap:CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations

us-gaap:CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations

us-gaap:CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations

us-gaap:CommonStockDividendsPerShareCashPaid

us-gaap:ContractWithCustomerLiabilityRevenueRecognized

us-gaap:DebtSecuritiesAvailableForSaleRealizedGain

us-gaap:DebtSecuritiesAvailableForSaleRealizedLoss

us-gaap:DepreciationAmortizationAndAccretionNet
us-gaap:ConsolidatedEntities

us-gaap:DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet
us-gaap:Position, us-gaap:UnderlyingAssetClass
us-gaap:DerivativeNonmonetaryNotionalAmountEnergyMeasure
us-gaap:Position, us-gaap:UnderlyingAssetClass
us-gaap:DerivativeNonmonetaryNotionalAmountMass

us-gaap:DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare

us-gaap:DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare

us-gaap:DisposalGroupNotDiscontinuedOperationGainLossOnDisposal
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:DividendsCommonStockCash
us-gaap:StatementEquityComponents
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument
us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisChangeInUnrealizedGainLoss
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument
us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument
us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationPurchases
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument
us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationTransfersIntoLevel3
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument
us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationTransfersOutOfLevel3

us-gaap:GainLossOnDispositionOfAssets1
us-gaap:ConsolidatedEntities

us-gaap:GainLossOnSaleOfOtherAssets
us-gaap:ConsolidatedEntities

us-gaap:ImpairmentOfInvestments
us-gaap:ConsolidatedEntities

us-gaap:IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity

us-gaap:IncomeLossFromEquityMethodInvestments
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:IncreaseDecreaseInDerivativeAssetsAndLiabilities
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:IncreaseDecreaseInIncomeTaxes
us-gaap:ConsolidatedEntities

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:NetCashProvidedByUsedInDiscontinuedOperations

us-gaap:NetCashProvidedByUsedInFinancingActivitiesContinuingOperations

us-gaap:NetCashProvidedByUsedInInvestingActivitiesContinuingOperations

us-gaap:NetCashProvidedByUsedInOperatingActivitiesContinuingOperations

us-gaap:NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest
us-gaap:StatementEquityComponents

us-gaap:OperatingLeaseLeaseIncome

us-gaap:OtherComprehensiveIncomeLossNetOfTax
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:PaymentsForProceedsFromOtherInvestingActivities

us-gaap:PaymentsForRepurchaseOfPreferredStockAndPreferenceStock
us-gaap:ConsolidatedEntities

us-gaap:PaymentsOfDividendsPreferredStockAndPreferenceStock
us-gaap:ConsolidatedEntities

us-gaap:PaymentsToAcquireAvailableForSaleSecuritiesDebt
us-gaap:ConsolidatedEntities

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
us-gaap:ProceedsFromDivestitureOfBusinesses

us-gaap:ProceedsFromIssuanceOfCommonStock

us-gaap:ProceedsFromIssuanceOfDebt
us-gaap:ConsolidatedEntities

us-gaap:ProceedsFromLinesOfCredit
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities
us-gaap:ConsolidatedEntities

us-gaap:ProceedsFromPaymentsToMinorityShareholders
us-gaap:ConsolidatedEntities

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt
us-gaap:ConsolidatedEntities

us-gaap:ProceedsFromSaleOfOtherProductiveAssets
us-gaap:ConsolidatedEntities

us-gaap:ProvisionForDoubtfulAccounts
us-gaap:ConsolidatedEntities

us-gaap:RepaymentsOfOtherDebt
us-gaap:ConsolidatedEntities

us-gaap:RestructuringCosts
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:RevenueFromRelatedParties
us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:AwardType, us-gaap:StatementEquityComponents, us-gaap:SubsequentEventType
us-gaap:StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans
us-gaap:AwardType, us-gaap:SubsequentEventType
us-gaap:SubsequentEventType

us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation
us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents, us-gaap:SubsequentEventType
us-gaap:SubsequentEventType

us-gaap:StockRepurchasedDuringPeriodShares
nrg:CapitalAllocationPlan
us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents, us-gaap:SubsequentEventType
us-gaap:SubsequentEventType
us-gaap:SubsequentEventType, nrg:CapitalAllocationPlan
nrg:CapitalAllocationPlan
us-gaap:StockRepurchasedDuringPeriodValue
us-gaap:SubsequentEventType, nrg:CapitalAllocationPlan
nrg:CapitalAllocationPlan
us-gaap:TreasuryStockAcquiredAverageCostPerShare
us-gaap:SubsequentEventType, nrg:CapitalAllocationPlan

us-gaap:TreasuryStockValueAcquiredCostMethod
us-gaap:StatementEquityComponents

us-gaap:UnrealizedGainLossOnCashFlowHedgingInstruments

us-gaap:UnrealizedGainLossOnDerivatives
us-gaap:ConsolidationItems, us-gaap:ProductOrService
us-gaap:ConsolidationItems, us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation
us-gaap:ProductOrService
nrg:CounterpartyRiskByInstitution
nrg:CreditDerivativeMaximumNetExposurePercentage
nrg:CounterpartyRiskByInvestmentGrade
us-gaap:DerivativeInstrumentRisk
nrg:DerivativeAssetFairValueAmountOffsetAgainstCollateralNetOfDerivativeLiabilityFairValueAmountOffsetAgainstCollateral
us-gaap:Range, us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, nrg:DerivativesByUnderlyingAssets
nrg:DerivativeAuctionPrice
us-gaap:DerivativeInstrumentRisk
nrg:DerivativeCollateralObligationToReturnCashNetOfDerivativeCollateralRightToReclaimCash
us-gaap:Position, us-gaap:UnderlyingAssetClass
nrg:DerivativeNonmonetaryNotionalAmountOther
us-gaap:DerivativeInstrumentRisk
nrg:FairValueofGrossDerivativeAssetsLiabilitiesNet

nrg:FundsDepositedByCounterparties
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities
nrg:NetAssetsLessNoncontrollingInterest

nrg:NuclearDecommissioningTrustFundLiabilityNoncurrent
us-gaap:ConsolidatedEntities

nrg:PowerGenerationCapacityMegawatts

us-gaap:AccountsReceivableNet
us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:AllowanceForDoubtfulAccountsReceivable

us-gaap:AssetsFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesDebtSecurities
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:CapitalizedContractCostNet

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
us-gaap:ConsolidatedEntities
us-gaap:CreditDerivativesByContractType
us-gaap:CollateralAlreadyPostedAggregateFairValue

us-gaap:ContractWithCustomerLiability

us-gaap:DebtInstrumentUnamortizedDiscountPremiumNet
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument
us-gaap:DecommissioningFundInvestments
us-gaap:FinancialInstrument

us-gaap:DecommissioningLiabilityNoncurrent
us-gaap:ConsolidatedEntities

us-gaap:DecommissioningTrustAssetsAmount
us-gaap:ConsolidatedEntities
us-gaap:FinancialInstrument

us-gaap:DeferredFinanceCostsNet

us-gaap:DeferredIncomeTaxAssetsNet
us-gaap:ConsolidatedEntities

us-gaap:DeferredIncomeTaxLiabilitiesNet
us-gaap:ConsolidatedEntities
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeAssetFairValueGrossLiability

us-gaap:DerivativeCollateralObligationToReturnCash
us-gaap:ConsolidatedEntities
us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeCollateralRightToReclaimCash
us-gaap:ConsolidatedEntities
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeFairValueOfDerivativeAsset
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, nrg:DerivativesByUnderlyingAssets
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
us-gaap:HedgingDesignation
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral

us-gaap:DerivativeFairValueOfDerivativeLiability
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, nrg:DerivativesByUnderlyingAssets
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:HedgingDesignation
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral
us-gaap:Range, us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, nrg:DerivativesByUnderlyingAssets
us-gaap:DerivativeForwardPrice

us-gaap:DerivativeInstrumentsAndHedges
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:DerivativeInstrumentsAndHedgesNoncurrent
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:DerivativeLiabilitiesCurrent
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:DerivativeLiabilitiesNoncurrent
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeLiabilityFairValueGrossAsset

us-gaap:EquityMethodInvestments
us-gaap:ConsolidatedEntities
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument
us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization
us-gaap:FinancialInstrument
us-gaap:InvestmentsFairValueDisclosure
us-gaap:FairValueByMeasurementBasis
us-gaap:NotesReceivableGross

us-gaap:OperatingLeaseLiabilityCurrent
us-gaap:ConsolidatedEntities

us-gaap:OperatingLeaseLiabilityNoncurrent
us-gaap:ConsolidatedEntities

us-gaap:PublicUtilitiesPropertyPlantAndEquipmentNet
us-gaap:ConsolidatedEntities
us-gaap:RedeemableNoncontrollingInterestEquityCarryingAmount

us-gaap:RedeemableNoncontrollingInterestEquityOtherCarryingAmount

us-gaap:RegulatedEntityOtherAssetsNoncurrent
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:RestrictedCashAndCashEquivalentsAtCarryingValue
us-gaap:ConsolidatedEntities
us-gaap:RestructuringPlan, us-gaap:StatementScenario
us-gaap:RestructuringAndRelatedCostExpectedCost1
us-gaap:RestructuringPlan, us-gaap:SubsequentEventType

us-gaap:RevenueRemainingPerformanceObligation

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems
us-gaap:StatementEquityComponents

us-gaap:TreasuryStockShares
us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents, us-gaap:SubsequentEventType

us-gaap:UnbilledContractsReceivable

Tables

  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:CommonStockValue ██████████████████████████████▁▁▁▁▁▁▁▁▁444444444444444444444444444444333333333NA33NANANA
us-gaap:CommonStockSharesIssued ████████████████████████▇▇▇▇▇▇▁▁▁▁422421421421421420419419419418418417417417417417417416416416416415415414401401400399399399304304304304NANANA304304NANA295NANANA
 us-gaap:CommonStockSharesIssued us-gaap:StatementEquityComponents us-gaap:CommonStock█▁422421NANANA420NANANA418NANANA417NANANA416NANANA415NANANA401NANANA399NANANA304304304304304NANANA295NANANA
us-gaap:CommonStockSharesOutstanding ▂▂▃▃▄▅▅▆▇▇▇▇▇▇▇▇▇▇▇█████▇▇▇▇▇▇▁▁▁▁245248251258267283289303314316316316316315315314314314319330334336337337324323323322322322228227227227NANANA247250NANA253NANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding ▂▃▃▃▄▅▅▆▇▆▇▆▆▆▆▆▆▆▇▇████▇▇▇▇▇▂▁▁▁▁▂▂▂▂▃▃▃▂▄▄▄249253256267280289299314322317322316316316317315315315332333336342343337324323327327323249228229228229240244247248253256257244272275275
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic ▂▂▃▃▄▅▆▆▇▇▇▇▇▇▇▇▇▇██████▇▇▇▇▇▂▁▁▁▁▂▂▂▂▃▃▃▂▂▃▂248251254265278289299310318317317316316316316315315315331333336338338337324323323323323247228228228229240243247248252255254242249253237
us-gaap:EarningsPerShareBasic ▅█▅▅▆▅▅▅▅▄▅▅▅▅▅▅▅▁▅▅▅▅▅▅▅▅▅▅▅▆▅▅▅▅▅▆▅▅▅▅▅▅▅▆▅0.4913.481.460.761.73-0.04-0.240.230.88-4.840.54-1.98-0.52-3.131.27-0.610.24-20.080.18-0.06-0.370.210.49-0.3-0.18-0.90.380.39-1.022.08-0.011.09-0.92-0.48-0.242.54-1.06-0.070.880.820.220.111.091.680.78
us-gaap:EarningsPerShareDiluted ▅█▆▅▆▅▅▅▅▄▅▅▅▅▅▅▅▁▅▅▅▅▅▅▅▅▅▅▅▆▅▅▅▅▅▆▅▅▅▅▅▅▅▆▅0.4913.371.450.751.72-0.04-0.240.230.87-4.840.53-1.98-0.52-3.131.27-0.670.24-20.080.18-0.06-0.370.20.48-0.3-0.18-0.90.370.39-1.032.06-0.011.08-0.92-0.48-0.242.53-1.06-0.070.870.810.220.111.021.560.7
us-gaap:IncomeLossFromContinuingOperationsPerBasicShare ▃█▃▃▃▃▃▃▃▁▃▃▃▂▃0.4913.241.470.710.34-0.429999999999999940.940.310.88-4.880.630.36-0.41-2.610.43NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:IncomeLossFromContinuingOperationsPerDilutedShare ▃█▃▃▃▃▃▃▃▁▃▃▃▂▃0.4913.141.460.70.34-0.419999999999999930.940.310.87-4.240.610.36-0.41-2.520.43NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax ▂▂▃▁▁▂▂▂▁▃▄▄▄▃▇▃▅▄█▅▆▇█▆▅▄▅▄▂▂▃▂▁▂▃▂▂▁▃▂▂▂▄▂▁192521952504178317791992207519281823249730492701275925323952263832293011443133973826419245693621348627953490292920812063233121661862213226742278199518162685213322152141291622371658
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems,us-gaap:MajorCustomers,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,nrg:BusinessSolutionsCustomers,nrg:ProductsAndServicesRetailRevenue,stpr:TX260NANANA258NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems,us-gaap:MajorCustomers,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,nrg:MassCustomer,nrg:ProductsAndServicesRetailRevenue,nrg:East347NANANA320NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems,us-gaap:MajorCustomers,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,nrg:MassCustomer,nrg:ProductsAndServicesRetailRevenue,stpr:TX1032NANANA995NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,nrg:ProductsAndServicesTotalRetail,nrg:East370NANANA338NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,nrg:ProductsAndServicesTotalRetail,stpr:TX1292NANANA1253NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,nrg:East500NANANA555NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,stpr:TX1351NANANA1151NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:MajorCustomers,us-gaap:ProductOrService nrg:BusinessSolutionsCustomers,nrg:ProductsAndServicesRetailRevenue▁▂█▃▁▂▇▇▂283307465345286311434437310NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:MajorCustomers,us-gaap:ProductOrService nrg:MassCustomer,nrg:ProductsAndServicesRetailRevenue▃▃█▃▂▂▆▃▁137814732080140013201296176613791175NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService nrg:ProductsAndServicesTotalRetail▂▃█▃▂▂▆▃▁166117802545174516061607220018161486NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:Revenues ▂▂▄▃▂▂▄▄▃▃▄▄▄▃▇▃▅▄█▅▆▇█▆▅▄▅▄▂▂▃▂▁▂▃▂▂▁▃▂▂▂▄▂▁201921952996246521651992306129222421249730492701275925323952263832293011443133973826419245693621348627953490292920812063233121661862213226742278199518162685213322152141291622371658
 us-gaap:Revenues us-gaap:ConsolidatedEntities srt:GuarantorSubsidiaries▃▃▇▅▃▁█▅▃▂▇17781659247321401769138326182172174415772366NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:Revenues us-gaap:ConsolidatedEntities srt:NonGuarantorSubsidiaries▁██▃▄▂▆▂▃▁▄252539525332395313445291329262386NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:Revenues us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,nrg:OperatingRevenues,nrg:East539NANANA609NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:Revenues us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,nrg:OperatingRevenues,stpr:TX1358NANANA1466NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:Revenues us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,nrg:East539NANANA609NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:Revenues us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,stpr:TX1358NANANA1466NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:Revenues us-gaap:ProductOrService nrg:OperatingRevenues▃▄█▅▃▁█▇▅201921952996246521651683306129222421NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:CostOfRevenue ▁▂▄▃▂▁▄▃▂▂▄▃▄▃▆▂▄▄▇▅▇▇█▆▆1457165421531845165113782307205115581684215618372125181727931756218922253034243430622951327828172733NA235520591765NA172613191573NA205316081324NA18351329163914221893NA766
 us-gaap:CostOfRevenue us-gaap:ConsolidatedEntities srt:GuarantorSubsidiaries▂▂▆▅▃▁█▆▁▁▇12901260172815901358114120051702115511261826NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:CostOfRevenue us-gaap:ConsolidatedEntities srt:NonGuarantorSubsidiaries▂▇█▃▄▃▅▂▃▁▃202395421252283240295195224165239NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:CostsAndExpenses ▁▁▂▂▁▁▂▂▁▃▂▂▂▃▃▂▂█▄▃▃▃▄▃▃1781199124562146194516842659260220173837268724022714332334632468278577544052316537643739402035323325NA295526342340NA224517692032NA263120091681NA22311689198018272305NA1043
 us-gaap:CostsAndExpenses us-gaap:ConsolidatedEntities srt:GuarantorSubsidiaries▂▂▄▄▂▁▆▄▁█▅15101415191217541534129421971874132125792034NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:CostsAndExpenses us-gaap:ConsolidatedEntities srt:NonGuarantorSubsidiaries▁██▃▄▃▄▄▃▆▃226474481291322298350326288399304NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:ResearchAndDevelopmentExpense ▁▁▁▁▁▁▁▄▃▄▃▄▄▅▅▄▅█▇█▇▆▅▄▄▄▅▄▄321222116131814181723231826413841342922211921242118NANANANANANANANANANANANANANANANA
 us-gaap:ResearchAndDevelopmentExpense us-gaap:ConsolidatedEntities srt:ParentCompany▄▄▁▁▃▁▄▄▆▆█33112133445NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:SellingGeneralAndAdministrativeExpense ▂▂▂▂▁▂▂▂▁▂▂▃▅▆▅▅▄██▆▅▆▄▅▃209212210211194208212211191210213223272299282265255334332291263290258268226NA229213229NA253207221NA169167143NA172139130154182NA95
 us-gaap:SellingGeneralAndAdministrativeExpense us-gaap:ConsolidatedEntities srt:GuarantorSubsidiaries█▁▇▃▅▅▅▂▂▁▂140100132112122125125108104101106NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:SellingGeneralAndAdministrativeExpense us-gaap:ConsolidatedEntities srt:ParentCompany▂▄▁▄▁▂█▃▂▄▂64855087566613976619369NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OperatingIncomeLoss ▇▇█▇▇▇█▇█▅█▇▇▆█▇█▁█▇▇██▇▇▇█▇▇▇▇█▇▇▇▇▇▇██▇▇███24420954032022149416334406-134537634347-79175587476-47273792327645354989180-205535295-2593786397-170943269314152454444258314611619615
 us-gaap:OperatingIncomeLoss us-gaap:ConsolidatedEntities srt:GuarantorSubsidiaries▇▇█▇▇▆▇▇▇▁▇26824456138623690421298426-1002332NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:OperatingIncomeLoss us-gaap:ConsolidatedEntities srt:NonGuarantorSubsidiaries▆▇▆▆▇▅█▄▆▁▇276444427316109-2140-12582NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:InterestExpense ▁▁▁▁▂▂▂▄▃▄▅▆▇▅▇▇▇▇▇▆██▇▇▆989599105114122121202167198221247269220280277284273291263301310280274255NA228206196NA163167165NA164167173NA169147153159178NA138
 us-gaap:InterestExpense us-gaap:ConsolidatedEntities srt:ParentCompany▂▁▂▃▆▇▇▆▂▄█929092971061121101069299114NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherNonoperatingIncomeExpense █▇▇▇▆▇▇▁▄▅▆▅▆▅▅▅▇▅▅▅▇▅▄▅▆27171720122217-20-3515101279818644199-3511NA504NA1022NA535NA1119445NA-3
 us-gaap:OtherNonoperatingIncomeExpense us-gaap:ConsolidatedEntities srt:GuarantorSubsidiaries▁▂▅▂▂█▂▁▂▁▃3411441943527NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:OtherNonoperatingIncomeExpense us-gaap:ConsolidatedEntities srt:ParentCompany█▅▄▅▄▁▄▄▄▄▅2511587-1153258NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax ▁▆▄▅▆▄▅▄▅▆▆▆▇▃▆▄▇▅▃█▂▄▄▄▇-153-4-11-3-2-4-22217-73-36-1-89-11-5-6-36NA5-190NA1-86NA-2710NANANANANANANANANA
 us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax us-gaap:ConsolidationItems srt:ConsolidationEliminations█▁▄▃▂▃▃▄▃▅▂30-892-2539512-4NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest █████▇███▅██▇▆█▇█▁█▇▇██▇▇14412038018898-153313129232-1665196103-207-1134442-25168-4973114-26-209168271-206-98NA30676-476NA-105246-326NA-135-9-365NA312327NANANANANA
 us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest us-gaap:ConsolidatedEntities srt:GuarantorSubsidiaries▇▇█▇▆▆▇▇▇▁▇269261588389246115428304429-1005342NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest us-gaap:ConsolidatedEntities srt:ParentCompany▇▇█▇▇▅▇▇▇▁▇144116379186112-115155144134-1000235NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
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us-gaap:IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest ▃█▄▄▃▃▄▃▄▁▄▃▃▂▃▃▃121346337418994-93306121233-166719099-170-891128-163-57NANANANANA271-206-98NA29868-483NANANANANANANANANANANANANANANANA
us-gaap:NonoperatingIncomeExpense ██▆▇▇▇█▅▆▃▆▅▄▂▃▃▁▅▄▄▄▄▄▃▄-100-89-160-132-123-154-103-205-174-320-180-240-254-343-313-338-408-246-265-258-285-285-278-295-278NA-229-219-217NA-191-151-156NA-178-278-679NA-142-117-135NA-167NANA
 us-gaap:NonoperatingIncomeExpense us-gaap:ConsolidatedEntities srt:GuarantorSubsidiaries▂▆█▂▄█▃▃▂▁▄1172731025763-310NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NonoperatingIncomeExpense us-gaap:ConsolidatedEntities srt:ParentCompany▇▇█▇▇▆▇▇▇▁█195215444294200-10342249239-858352NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:IncomeTaxExpenseBenefit ▆▁▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆█▆▆▆▆▆▆▆23-33436-14-1278-1364-4-79492521138547-17-737189-126-31NA163-61-149NA-113-13-120NA-80-630-105NA8911765114166NA298
 us-gaap:IncomeTaxExpenseBenefit us-gaap:ConsolidatedEntities srt:ParentCompany▇▁▇▇▇▇▇▇▇█▇23-33455-24-34-156-32-1626061NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:ProfitLoss ▆█▆▆▆▆▆▆▆▄▆▅▅▅▆▅▆▁▆▆▅▆▆▆▆▅▆▆▅1213385372202482-13-4896233-1655163-642-203-1055393-27647-635867-9-13697182-80-67-290143137-327NA8259-206NA-55621-260NA2232105833278NA198
us-gaap:ComprehensiveIncomeNetOfTax ▆█▆▆▆▆▆▆▆▄▆▅▅▅▆▅▆▁▆▆▅▆▆▆▆1063349313198480-48-7371282-1518177-601-153-1001456-26877-6304660-124-70158-97-47NA114148-314NA-52163-210NA-159563-329NA318NANANA226NANA
 us-gaap:ComprehensiveIncomeNetOfTax us-gaap:ConsolidatedEntities srt:GuarantorSubsidiaries▆▆█▇▆▅▆▅▆▁▇256289543388256137304207329-390405NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:ComprehensiveIncomeNetOfTax us-gaap:ConsolidatedEntities srt:ParentCompany▃█▄▃▄▃▃▃▄▁▃1063349313198480-46-8671283-1518178NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:NetIncomeLoss ▆█▆▆▆▆▆▆▆▄▆▅▅▅▆▅▆▁▆▆▅▆▆▅▆▅▆▆▅▆▆▆▅▅▆▆▅▆▆▆▆▆▆▆▆1213383372201482-12-7272279-1535171-626-163-987402-27182-631466-14-120119168-97-56-290124130-328516-1251-207-109-55621-260-152232115833278433198
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us-gaap:CommonStockValue ██████████████████████████████▁▁▁▁▁▁▁▁▁444444444444444444444444444444333333333NA33NANANA
us-gaap:RetainedEarningsAccumulatedDeficit ▄▄▂▂▁▁▁▁▁▁▂▂▂▃▃▃▃▃▇▇▇▇▇▇▇▇██████████▇██-1570-1616-4991-5355-5548-6022-6001-5920-5982-6268-4713-4874-4238-3787-2791-3179-2977-3007335833463413358835643445359436954272417941244494400240263777398740994156353838003817NA33883332NANANA
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us-gaap:NetCashProvidedByUsedInOperatingActivities ▃▅▅▅▁▄▆▃▄▆▇▃▁▄█▄▅▁█▃▄▄▇▂▄208552472516-127295558167357581732142-68339860319554-83934198260396744-21391NANANA-124NANANA-76NANANA216NANANA114826NANA139
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us-gaap:NetCashProvidedByUsedInInvestingActivities ▅▅▄▅█▅█▄▄▅▅▅▅▄▆▅▅▅▄▄▅▅▃▁▆-68-58-489-931196-1461087-714-432-301-220-313-232-503148-326-143-253-372-590-27055-1205-1877124NANANA-836NANANA-543NANANA-228NANANA-194-227NANA-259
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us-gaap:NetCashProvidedByUsedInFinancingActivities ▆▃▅▁▂▂▁▆▅▃▅▅▄▄▅▄▄▃▃▆▅▄█▆▆293-386-42-972-748-860-1089472-49-54441171-153-30541-266-264-406-45538940-276907218416NANANA580NANANA527NANANA-232NANANA-408-543NANA-184
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us-gaap:NetCashProvidedByUsedInOperatingActivities ▃▅▅▅▁▄▆▃▄▆▇▃▁▄█▄▅▁█▃▄▄▇▂▄208552472516-127295558167357581732142-68339860319554-83934198260396744-21391NANANA-124NANANA-76NANANA216NANANA114826NANA139
 us-gaap:NetCashProvidedByUsedInOperatingActivities us-gaap:ConsolidatedEntities srt:GuarantorSubsidiaries▂▁▄▄▁▆▁▂▄█203-1466160091156-661908221725NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetCashProvidedByUsedInOperatingActivities us-gaap:ConsolidatedEntities srt:NonGuarantorSubsidiaries▃▃▃▄▂▂▅▇▁█63-2351114-51-106303514-219688NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:NetIncomeLoss ▆█▆▆▆▆▆▆▆▄▆▅▅▅▆▅▆▁▆▆▅▆▆▅▆▅▆▆▅▆▆▆▅▅▆▆▅▆▆▆▆▆▆▆▆1213383372201482-12-7272279-1535171-626-163-987402-27182-631466-14-120119168-97-56-290124130-328516-1251-207-109-55621-260-152232115833278433198
 us-gaap:NetIncomeLoss us-gaap:ConsolidatedEntities srt:GuarantorSubsidiaries▆▅█▆▅▅▆▅▆▁▆269261588389255148306211331-316342NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
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us-gaap:ProfitLoss ▆█▆▆▆▆▆▆▆▄▆▅▅▅▆▅▆▁▆▆▅▆▆▆▆▅▆▆▅1213385372202482-13-4896233-1655163-642-203-1055393-27647-635867-9-13697182-80-67-290143137-327NA8259-206NA-55621-260NA2232105833278NA198
us-gaap:DepreciationDepletionAndAmortization ▂▂▂▂▂▁▂▄▄▅▅▅▆▇▇▆▆▇▇▇▇█▇▇▆10911291858551112227235267272260300388357309313393382396395427375386335NA318305298NA239234230NA238222205NA210208202224212NA169
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us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet ▆▁▇▆█▂▅█▆▃▅▇▇▅▃▇▆▆▃█▅▄█▆▄99-416214118270-271-26262139-1641180199-16-24723412156-19525533-144297129-65NANANA37NANANA42NANANA241NANANA105NANANANA
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  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities ▅▅▄▅█▅█▄▄▅▅▅▅▄▆▅▅▅▄▄▅▅▃▁▆-68-58-489-931196-1461087-714-432-301-220-313-232-503148-326-143-253-372-590-27055-1205-1877124NANANA-836NANANA-543NANANA-228NANANA-194-227NANA-259
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us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▅▅▅▅▅▅▁▇██▆▇▇█▇█▇█▇▇▇▆▆▇▇664576584943-346333358351218274268346276343279394306331252234168270237NANANA813NANANA639NANANA219NANANA185174NANA233
 us-gaap:PaymentsToAcquirePropertyPlantAndEquipment us-gaap:ConsolidatedEntities srt:GuarantorSubsidiaries▆▁█▄▃▂▇▄█▅50295841363455436045NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
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  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities ▆▃▅▁▂▂▁▆▅▃▅▅▄▄▅▄▄▃▃▆▅▄█▆▆293-386-42-972-748-860-1089472-49-54441171-153-30541-266-264-406-45538940-276907218416NANANA580NANANA527NANANA-232NANANA-408-543NANA-184
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  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31

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
Value444444444444444444444444444444333333333333
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 Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Par Or Stated Value Per Share

Shares Issued

Common Stock Shares Issued

us-gaap:CommonStockSharesIssued



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-312010-09-302009-12-312008-12-31
Value422421421421421420419419419418418417417417417417417416416416416415415414401401400399399399304304304304304304295263
Percentage of CommonStockSharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:CommonStock



Period End2020-03-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-312007-12-31
Value422421420418417416415401399304304304304304295263261
Percentage of CommonStockSharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0100.0100.0100.00.0

us-gaap:StatementEquityComponents, us-gaap:SubsequentEventType

us-gaap:CommonStock, us-gaap:SubsequentEvent



Period End2020-05-07
Value422
Percentage of CommonStockSharesIssued0.0

Common Stock Shares Outstanding

us-gaap:CommonStockSharesOutstanding



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-312010-09-302009-12-312008-12-31
Value245248251258267283289303314316316316316315315314314314319330334336337337324323323322322322228227227227247250253234
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:SubsequentEventType

us-gaap:SubsequentEvent



Period End2020-05-072019-10-312019-08-07
Value244251252
Percentage of CommonStockSharesOutstanding0.00.00.0

Common Stock Shares Authorized

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value249253256267280289299314322317322316316316317315315315332333336342343337324323327327323249228229228229240244247248253256257244272275275
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value248251254265278289299310318317317316316316316315315315331333336338338337324323323323323247228228228229240243247248252255254242249253237
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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
Value0.4913.481.460.761.73-0.04-0.240.230.88-4.840.54-1.98-0.52-3.131.27-0.610.24-20.080.18-0.06-0.370.210.49-0.3-0.18-0.90.380.39-1.022.08-0.011.09-0.92-0.48-0.242.54-1.06-0.070.880.820.220.111.091.680.78
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
Value0.4913.371.450.751.72-0.04-0.240.230.87-4.840.53-1.98-0.52-3.131.27-0.670.24-20.080.18-0.06-0.370.20.48-0.3-0.18-0.90.370.39-1.032.06-0.011.08-0.92-0.48-0.242.53-1.06-0.070.870.810.220.111.021.560.7
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Income Loss From Continuing Operations Per Basic Share

us-gaap:IncomeLossFromContinuingOperationsPerBasicShare



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value0.4913.241.470.710.34-0.429999999999999940.940.310.88-4.880.630.36-0.41-2.610.43
Percentage of IncomeLossFromContinuingOperationsPerBasicShare100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Income Loss From Continuing Operations Per Diluted Share

us-gaap:IncomeLossFromContinuingOperationsPerDilutedShare



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value0.4913.141.460.70.34-0.419999999999999930.940.310.87-4.240.610.36-0.41-2.520.43
Percentage of IncomeLossFromContinuingOperationsPerDilutedShare100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value192521952504178317791992207519281823249730492701275925323952263832293011443133973826419245693621348627953490292920812063233121661862213226742278199518162685213322152141291622371658
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems

us-gaap:IntersegmentElimination



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-2-30-1-3898-480-269-182
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.1-0.10.0-0.1-0.245.1-23.1-14.0-10.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.1-0.10.0-0.1-0.245.1-23.1-14.0-10.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:IntersegmentElimination100.0100.00.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems, us-gaap:MajorCustomers, us-gaap:ProductOrService

us-gaap:IntersegmentElimination, nrg:MassCustomer, nrg:ProductsAndServicesRetailRevenue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-1-20-1-1-1-2-1-1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.1-0.10.0-0.1-0.1-0.1-0.1-0.1-0.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.1-0.10.0-0.1-0.1-0.1-0.1-0.1-0.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:IntersegmentElimination nrg:MassCustomer nrg:ProductsAndServicesRetailRevenue100.0100.00.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems, us-gaap:MajorCustomers, us-gaap:ProductOrService, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, nrg:BusinessSolutionsCustomers, nrg:ProductsAndServicesRetailRevenue, nrg:East



Period End2020-03-312019-03-31
Value2318
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.21.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.21.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments nrg:BusinessSolutionsCustomers nrg:ProductsAndServicesRetailRevenue nrg:East100.0100.0

us-gaap:OperatingSegments, nrg:BusinessSolutionsCustomers, nrg:ProductsAndServicesRetailRevenue, stpr:TX



Period End2020-03-312019-03-31
Value260258
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax13.514.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax13.514.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments nrg:BusinessSolutionsCustomers nrg:ProductsAndServicesRetailRevenue stpr:TX100.0100.0

us-gaap:OperatingSegments, nrg:MassCustomer, nrg:ProductsAndServicesRetailRevenue, nrg:East



Period End2020-03-312019-03-31
Value347320
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax18.018.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax18.018.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments nrg:MassCustomer nrg:ProductsAndServicesRetailRevenue nrg:East100.0100.0

us-gaap:OperatingSegments, nrg:MassCustomer, nrg:ProductsAndServicesRetailRevenue, stpr:TX



Period End2020-03-312019-03-31
Value1032995
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax53.655.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax53.655.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments nrg:MassCustomer nrg:ProductsAndServicesRetailRevenue stpr:TX100.0100.0

us-gaap:ConsolidationItems, us-gaap:ProductOrService

us-gaap:IntersegmentElimination, nrg:CapacityRevenue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0011-101-2-1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.1-0.10.00.0-0.1-0.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.1-0.10.00.0-0.1-0.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:IntersegmentElimination nrg:CapacityRevenue0.00.0100.0100.0100.00.0100.0100.0100.0

us-gaap:IntersegmentElimination, nrg:EnergyRevenue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-1-289-568-365-276-239-479-250-161
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.1-13.2-22.7-20.5-15.5-12.0-23.1-13.0-8.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.1-13.2-22.7-20.5-15.5-12.0-23.1-13.0-8.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:IntersegmentElimination nrg:EnergyRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IntersegmentElimination, nrg:ProductsAndServicesOther



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-20-20-210-16-19
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.10.0-0.10.0-0.10.10.0-0.8-1.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.10.0-0.10.0-0.10.10.0-0.8-1.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:IntersegmentElimination nrg:ProductsAndServicesOther100.00.0100.00.0100.0100.00.0100.0100.0

us-gaap:IntersegmentElimination, nrg:ProductsAndServicesTotalRetail



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-1-20-1-1-1-2-1-1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.1-0.10.0-0.1-0.1-0.1-0.1-0.1-0.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.1-0.10.0-0.1-0.1-0.1-0.1-0.1-0.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:IntersegmentElimination nrg:ProductsAndServicesTotalRetail100.0100.00.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems, us-gaap:ProductOrService, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, nrg:CapacityRevenue, nrg:East



Period End2020-03-312019-03-31
Value134144
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.08.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.08.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments nrg:CapacityRevenue nrg:East100.0100.0

us-gaap:OperatingSegments, nrg:CapacityRevenue, nrg:WestAndOther



Period End2020-03-312019-03-31
Value1512
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.80.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.80.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments nrg:CapacityRevenue nrg:WestAndOther100.0100.0

us-gaap:OperatingSegments, nrg:EnergyRevenue, nrg:East



Period End2020-03-312019-03-31
Value45126
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.37.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.37.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments nrg:EnergyRevenue nrg:East100.0100.0

us-gaap:OperatingSegments, nrg:EnergyRevenue, nrg:WestAndOther



Period End2020-03-312019-03-31
Value7558
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.93.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.93.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments nrg:EnergyRevenue nrg:WestAndOther100.0100.0

us-gaap:OperatingSegments, nrg:EnergyRevenue, stpr:TX



Period End2020-03-312019-03-31
Value5105
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.35.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.35.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments nrg:EnergyRevenue stpr:TX100.0100.0

us-gaap:OperatingSegments, nrg:ProductsAndServicesOther, nrg:East



Period End2020-03-312019-03-31
Value1016
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.50.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.50.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments nrg:ProductsAndServicesOther nrg:East100.0100.0

us-gaap:OperatingSegments, nrg:ProductsAndServicesOther, nrg:WestAndOther



Period End2020-03-312019-03-31
Value2019
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.01.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.01.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments nrg:ProductsAndServicesOther nrg:WestAndOther100.0100.0

us-gaap:OperatingSegments, nrg:ProductsAndServicesOther, stpr:TX



Period End2020-03-312019-03-31
Value6177
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.24.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.24.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments nrg:ProductsAndServicesOther stpr:TX100.0100.0

us-gaap:OperatingSegments, nrg:ProductsAndServicesTotalRetail, nrg:East



Period End2020-03-312019-03-31
Value370338
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax19.219.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax19.219.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments nrg:ProductsAndServicesTotalRetail nrg:East100.0100.0

us-gaap:OperatingSegments, nrg:ProductsAndServicesTotalRetail, stpr:TX



Period End2020-03-312019-03-31
Value12921253
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax67.170.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax67.170.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments nrg:ProductsAndServicesTotalRetail stpr:TX100.0100.0

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, nrg:East



Period End2020-03-312019-03-31
Value500555
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax26.031.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax26.031.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments nrg:East100.0100.0

us-gaap:OperatingSegments, stpr:TX



Period End2020-03-312019-03-31
Value13511151
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax70.264.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax70.264.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments stpr:TX100.0100.0

us-gaap:MajorCustomers, us-gaap:ProductOrService

nrg:BusinessSolutionsCustomers, nrg:ProductsAndServicesRetailRevenue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value283307465345286311434437310
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax14.714.018.619.316.115.620.922.717.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax14.714.018.619.316.115.620.922.717.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax nrg:BusinessSolutionsCustomers nrg:ProductsAndServicesRetailRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0

nrg:MassCustomer, nrg:ProductsAndServicesRetailRevenue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value137814732080140013201296176613791175
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax71.667.183.178.574.265.185.171.564.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax71.667.183.178.574.265.185.171.564.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax nrg:MassCustomer nrg:ProductsAndServicesRetailRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProductOrService

nrg:CapacityRevenue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value149146152155154-18254313288
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.76.76.18.78.7-0.912.216.215.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.76.76.18.78.7-0.912.216.215.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax nrg:CapacityRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0

nrg:EnergyRevenue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value124225442249306145479673619
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.410.317.714.017.27.323.134.934.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.410.317.714.017.27.323.134.934.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax nrg:EnergyRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0

nrg:ProductsAndServicesOther



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value89626775796068119148
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.62.82.74.24.43.03.36.28.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.62.82.74.24.43.03.36.28.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax nrg:ProductsAndServicesOther100.0100.0100.0100.0100.0100.0100.0100.0100.0

nrg:ProductsAndServicesTotalRetail



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value166117802545174516061607220018161486
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax86.381.1101.697.990.380.7106.094.281.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax86.381.1101.697.990.380.7106.094.281.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax nrg:ProductsAndServicesTotalRetail100.0100.0100.0100.0100.0100.0100.0100.0100.0

Revenues

us-gaap:Revenues



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value201921952996246521651992306129222421249730492701275925323952263832293011443133973826419245693621348627953490292920812063233121661862213226742278199518162685213322152141291622371658
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax104.9100.0119.6138.3121.7100.0147.5151.6132.8100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value17781659247321401769138326182172174415772366
Percentage of Revenues88.175.682.586.881.769.485.574.372.063.277.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax92.475.698.8120.099.469.4126.2112.795.763.277.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:GuarantorSubsidiaries0.00.00.00.00.00.00.00.00.00.00.0

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value252539525332395313445291329262386
Percentage of Revenues12.524.617.513.518.215.714.510.013.610.512.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax13.124.621.018.622.215.721.415.118.010.512.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-11-3-2-71-13-2-2-8-11-12
Percentage of Revenues-0.5-0.1-0.1-0.30.0-0.7-0.1-0.1-0.3-0.4-0.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.6-0.1-0.1-0.40.1-0.7-0.1-0.1-0.4-0.4-0.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:IntersegmentElimination



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value-3-269-522-650-266-140-722-540300-12-523-194-244-232-562-186
Percentage of Revenues-0.1-12.3-17.4-26.4-12.3-7.0-23.6-18.512.4-0.5-17.2-7.2-8.8-9.2-14.2-7.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.2-12.3-20.8-36.5-15.0-7.0-34.8-28.016.5-0.5-17.2-7.2-8.8-9.2-14.2-7.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:IntersegmentElimination150.08966.70.065000.08866.7-15.6150.4200.7-164.80.00.00.00.00.00.00.0

us-gaap:ConsolidationItems, us-gaap:ProductOrService

us-gaap:IntersegmentElimination, nrg:OperatingRevenues



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-3-269-522-650-265-139-721-533302
Percentage of Revenues-0.1-12.3-17.4-26.4-12.2-7.0-23.6-18.212.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.2-12.3-20.8-36.5-14.9-7.0-34.7-27.616.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:IntersegmentElimination nrg:OperatingRevenues0.00.00.00.00.00.00.00.00.0

us-gaap:ConsolidationItems, us-gaap:ProductOrService, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, nrg:OperatingRevenues, nrg:East



Period End2020-03-312019-03-31
Value539609
Percentage of Revenues26.728.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax28.034.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments nrg:OperatingRevenues nrg:East0.00.0

us-gaap:OperatingSegments, nrg:OperatingRevenues, nrg:WestAndOther



Period End2020-03-312019-03-31
Value12593
Percentage of Revenues6.24.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.55.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments nrg:OperatingRevenues nrg:WestAndOther0.00.0

us-gaap:OperatingSegments, nrg:OperatingRevenues, stpr:TX



Period End2020-03-312019-03-31
Value13581466
Percentage of Revenues67.367.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax70.582.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments nrg:OperatingRevenues stpr:TX0.00.0

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, nrg:East



Period End2020-03-312019-03-31
Value539609
Percentage of Revenues26.728.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax28.034.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments nrg:East107.8109.7

us-gaap:OperatingSegments, nrg:WestAndOther



Period End2020-03-312019-03-31
Value12593
Percentage of Revenues6.24.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.55.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments nrg:WestAndOther164.5122.4

us-gaap:OperatingSegments, stpr:TX



Period End2020-03-312019-03-31
Value13581466
Percentage of Revenues67.367.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax70.582.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments stpr:TX100.5127.4

us-gaap:OperatingSegments, us-gaap:Corporate



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value00001117212310232410
Percentage of Revenues0.00.00.00.00.00.10.00.20.10.00.10.10.40.90.60.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.10.10.00.40.10.00.10.10.40.90.60.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments us-gaap:Corporate0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ProductOrService

nrg:OperatingRevenues



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value201921952996246521651683306129222421
Percentage of Revenues100.0100.0100.0100.0100.084.5100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax104.9100.0119.6138.3121.784.5147.5151.6132.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax nrg:OperatingRevenues0.00.00.00.00.00.00.00.00.0

Cost Of Revenue

us-gaap:CostOfRevenue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-12-312009-09-302009-03-31
Value145716542153184516511378230720511558168421561837212518172793175621892225303424343062295132782817273323552059176517261319157320531608132418351329163914221893766
Percentage of CostOfRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax75.775.486.0103.592.869.2111.2106.485.567.470.768.077.071.870.766.667.873.968.571.780.070.471.777.878.467.570.384.874.060.984.576.870.666.468.362.374.066.464.946.2

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value12901260172815901358114120051702115511261826
Percentage of CostOfRevenue88.576.280.386.282.382.886.983.074.166.984.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax67.057.469.089.276.357.396.688.363.445.159.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:GuarantorSubsidiaries0.00.00.00.00.00.00.00.00.00.00.0

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value202395421252283240295195224165239
Percentage of CostOfRevenue13.923.919.613.717.117.412.89.514.49.811.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.518.016.814.115.912.014.210.112.36.67.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries0.00.00.00.00.00.00.00.00.00.00.0

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-2426109109-5141618
Percentage of CostOfRevenue-1.60.10.30.50.50.70.4-0.20.91.00.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.20.10.20.60.50.50.4-0.30.80.60.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-11-3-2-71-13-2-3-8-10-11
Percentage of CostOfRevenue-0.8-0.2-0.1-0.40.1-0.9-0.1-0.1-0.5-0.6-0.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.6-0.1-0.1-0.40.1-0.7-0.1-0.2-0.4-0.4-0.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations0.00.00.00.00.00.00.00.00.00.00.0

Costs And Expenses

us-gaap:CostsAndExpenses



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-12-312009-09-302009-03-31
Value1781199124562146194516842659260220173837268724022714332334632468278577544052316537643739402035323325295526342340224517692032263120091681223116891980182723051043
Percentage of CostsAndExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax92.590.798.1120.4109.384.5128.1135.0110.6153.788.188.998.4131.287.693.686.2257.591.493.298.489.288.097.595.484.789.9112.496.381.7109.198.488.284.383.179.289.485.379.062.9

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value15101415191217541534129421971874132125792034
Percentage of CostsAndExpenses84.871.177.981.778.976.882.672.065.567.275.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax78.464.576.498.486.265.0105.997.272.5103.366.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:GuarantorSubsidiaries0.00.00.00.00.00.00.00.00.00.00.0

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value226474481291322298350326288399304
Percentage of CostsAndExpenses12.723.819.613.616.617.713.212.514.310.411.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.721.619.216.318.115.016.916.915.816.010.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries0.00.00.00.00.00.00.00.00.00.00.0

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value561056510888105187105105142117
Percentage of CostsAndExpenses3.15.32.65.04.56.27.04.05.23.74.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.94.82.66.14.95.39.05.45.85.73.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-11-3-2-71-13-75-4-8-11-12
Percentage of CostsAndExpenses-0.6-0.2-0.1-0.30.1-0.8-2.8-0.2-0.4-0.3-0.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.6-0.1-0.1-0.40.1-0.7-3.6-0.2-0.4-0.4-0.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations0.00.00.00.00.00.00.00.00.00.00.0

Research And Development Expense

us-gaap:ResearchAndDevelopmentExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value321222116131814181723231826413841342922211921242118
Percentage of ResearchAndDevelopmentExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.10.00.10.10.10.00.80.70.70.50.70.60.90.60.70.81.40.91.20.90.70.50.60.50.80.70.70.9

us-gaap:ConsolidatedEntities

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value0-10101-21101
Percentage of ResearchAndDevelopmentExpense0.0-50.00.050.00.050.0-200.06.27.70.07.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-0.00.00.10.00.1-0.10.10.10.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries0.00.00.00.00.00.00.00.00.00.00.0

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value33112133445
Percentage of ResearchAndDevelopmentExpense100.0150.0100.050.0100.050.0300.018.830.822.235.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.10.00.10.10.10.10.20.20.20.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value0.00.00.00.00.00.00.0-1000000.00.00.00.0
Percentage of ResearchAndDevelopmentExpense0.00.00.00.00.00.00.0-6.20.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.00.00.0-0.10.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations0.00.00.00.00.00.00.00.00.00.00.0

Selling General And Administrative Expense

us-gaap:SellingGeneralAndAdministrativeExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-12-312009-09-302009-03-31
Value20921221021119420821221119121021322327229928226525533433229126329025826822622921322925320722116916714317213913015418295
Percentage of SellingGeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.99.78.411.810.910.410.210.910.58.47.08.39.911.87.110.07.911.17.58.66.96.95.67.46.56.67.311.010.99.611.96.37.37.26.46.55.97.26.25.7

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value140100132112122125125108104101106
Percentage of SellingGeneralAndAdministrativeExpense67.047.262.953.162.960.159.051.254.548.149.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.34.65.36.36.96.36.05.65.74.03.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:GuarantorSubsidiaries0.00.00.00.00.00.00.00.00.00.00.0

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value52728121617211611916
Percentage of SellingGeneralAndAdministrativeExpense2.412.713.35.78.28.29.97.65.84.37.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.31.21.10.70.90.91.00.80.60.40.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries0.00.00.00.00.00.00.00.00.00.00.0

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value64855087566613976619369
Percentage of SellingGeneralAndAdministrativeExpense30.640.123.841.228.931.765.636.031.944.332.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.33.92.04.93.13.36.73.93.33.72.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value000000-7300-1-1
Percentage of SellingGeneralAndAdministrativeExpense0.00.00.00.00.00.0-34.40.00.0-0.5-0.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.00.0-3.50.00.0-0.0-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations0.00.00.00.00.00.00.00.00.00.00.0

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
Value24420954032022149416334406-134537634347-79175587476-47273792327645354989180-205535295-2593786397-170943269314152454444258314611619615
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 RevenueFromContractWithCustomerExcludingAssessedTax12.79.521.617.912.42.520.017.322.3-53.912.312.71.7-31.219.13.314.7-157.08.66.82.010.812.02.55.2-7.315.310.1-12.41.83.718.3-9.10.41.611.815.78.416.920.811.614.721.027.737.1

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value26824456138623690421298426-1002332
Percentage of OperatingIncomeLoss109.8116.7103.9120.6106.8183.7101.289.2104.974.588.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax13.911.122.421.613.34.520.315.523.4-40.110.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:GuarantorSubsidiaries0.00.00.00.00.00.00.00.00.00.00.0

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value276444427316109-2140-12582
Percentage of OperatingIncomeLoss11.130.68.113.133.032.726.2-6.39.99.321.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.42.91.82.44.10.85.3-1.12.2-5.02.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries0.00.00.00.00.00.00.00.00.00.00.0

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-51-99-65-108-88-105-187-105-105-142-117
Percentage of OperatingIncomeLoss-20.9-47.4-12.0-33.8-39.8-214.3-45.0-31.4-25.910.6-31.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-2.6-4.5-2.6-6.1-4.9-5.3-9.0-5.4-5.8-5.7-3.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value000000732000
Percentage of OperatingIncomeLoss0.00.00.00.00.00.017.50.60.0-0.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.00.03.50.10.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations0.00.00.00.00.00.00.00.00.00.00.0

Interest Expense

us-gaap:InterestExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-12-312009-09-302009-03-31
Value989599105114122121202167198221247269220280277284273291263301310280274255228206196163167165164167173169147153159178138
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.14.34.05.96.46.15.810.59.27.97.29.19.78.77.110.58.89.16.67.77.97.46.17.67.36.57.09.47.07.78.96.17.38.76.36.96.97.46.18.3

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value53434334334
Percentage of InterestExpense5.13.24.02.93.52.52.52.01.81.51.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.30.10.20.20.20.20.10.20.20.10.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:GuarantorSubsidiaries0.00.00.00.00.00.00.00.00.00.00.0

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value123547813212321
Percentage of InterestExpense1.02.13.04.83.55.76.66.412.611.69.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.10.10.30.20.40.40.71.20.90.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries0.00.00.00.00.00.00.00.00.00.00.0

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value929092971061121101069299114
Percentage of InterestExpense93.994.792.992.493.091.890.952.555.150.051.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.84.13.75.46.05.65.35.55.04.03.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.00.0

Other Nonoperating Income Expense

us-gaap:OtherNonoperatingIncomeExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-12-312009-09-302009-03-31
Value27171720122217-20-3515101279818644199-351150410225351119445-3
Percentage of OtherNonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.40.80.71.10.71.10.8-1.0-0.20.20.50.40.40.30.20.30.60.20.10.10.50.2-0.10.10.30.10.00.20.40.10.10.20.10.30.40.90.20.20.2-0.2

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value3411441943527
Percentage of OtherNonoperatingIncomeExpense11.123.564.720.033.386.423.5-15.0-166.740.046.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.20.40.20.21.00.20.20.30.10.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:GuarantorSubsidiaries0.00.00.00.00.00.00.00.00.00.00.0

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-12181148-29-7-6838
Percentage of OtherNonoperatingIncomeExpense-3.711.85.940.08.363.647.1145.0233.3-1360.0253.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.10.10.00.40.10.70.4-1.5-0.4-2.71.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries0.00.00.00.00.00.00.00.00.00.00.0

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value2511587-1153258
Percentage of OtherNonoperatingIncomeExpense92.664.729.440.058.3-50.029.4-15.0-66.7100.053.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.30.50.20.40.4-0.60.20.20.10.20.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value00000000069-34
Percentage of OtherNonoperatingIncomeExpense0.00.00.00.00.00.00.0-0.0-0.01380.0-226.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.00.00.00.00.02.8-1.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations0.00.00.00.00.00.00.00.00.00.00.0

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-153-4-11-3-2-4-22217-73-36-1-89-11-5-6-365-1901-86-2710
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.80.1-0.2-0.10.1-0.2-0.1-0.2-0.10.10.10.00.3-0.30.1-0.10.2-0.0-0.20.3-0.3-0.1-0.1-0.10.20.1-0.60.00.0-0.40.3-1.00.4

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-155-5-11-2-2-4-201
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax100.0166.7125.0100.0100.066.7100.0100.0100.00.050.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.80.2-0.2-0.10.1-0.1-0.1-0.2-0.10.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:GuarantorSubsidiaries0.00.00.00.00.00.00.00.00.00.00.0

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-153-4-11-2-2-4-211
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax100.0100.0100.0100.0100.066.7100.0100.0100.050.050.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.80.1-0.2-0.10.1-0.1-0.1-0.2-0.10.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries0.00.00.00.00.00.00.00.00.00.00.0

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-153-4-11-4-1-5-3-104
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax100.0100.0100.0100.0100.0133.350.0125.0150.0-500.0200.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.80.1-0.2-0.10.1-0.2-0.0-0.3-0.2-0.40.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value30-892-2539512-4
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax-200.0-266.7-225.0-200.0-200.0-166.7-150.0-225.0-250.0600.0-200.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.6-0.40.40.1-0.10.30.10.50.30.5-0.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations0.00.00.00.00.00.00.00.00.00.00.0

Income Loss From Continuing Operations

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

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value14412038018898-153313129232-1665196103-207-1134442-25168-4973114-26-209168271-206-9830676-476-105246-326-135-9-365312327
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.55.515.210.55.5-7.715.16.712.7-66.76.43.8-7.5-44.811.2-9.52.1-165.22.6-0.8-5.54.05.9-5.7-2.88.82.6-22.9-4.511.4-17.5-5.0-0.4-18.311.615.3

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value269261588389246115428304429-1005342
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest186.8217.5154.7206.9251.0-75.2136.7235.7184.960.4174.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax14.011.923.521.813.85.820.615.823.5-40.211.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:GuarantorSubsidiaries0.00.00.00.00.00.00.00.00.00.00.0

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-455-304549-9129-5814-284109
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest-2.845.8-7.923.950.05.941.2-45.06.017.155.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.22.5-1.22.52.8-0.56.2-3.00.8-11.43.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries0.00.00.00.00.00.00.00.00.00.00.0

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value144116379186112-115155144134-1000235
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.096.799.798.9114.375.249.5111.657.860.1119.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.55.315.110.46.3-5.87.57.57.4-40.07.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-265-312-557-432-309-144-399-358-333781-500
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest-184.0-260.0-146.6-229.8-315.394.1-127.5-277.5-143.5-46.9-255.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-13.8-14.2-22.2-24.2-17.4-7.2-19.2-18.6-18.331.3-16.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:IntersegmentElimination



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value-1-111-271221-504-12-11-18-12-4-4344-43
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest-0.7-0.80.30.5-27.6-798.0-161.0-9.3-4.71.1-6.1-3.91.9-3.00.917.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.1-0.00.00.1-1.561.3-24.3-0.6-0.6-0.7-0.4-0.1-0.11.30.1-1.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:IntersegmentElimination50.033.30.0-100.0900.0136.0105.04.56.00.00.00.00.00.00.00.0

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, nrg:East



Period End2020-03-312019-03-31
Value2499
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest16.7101.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.25.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments nrg:East4.817.8

us-gaap:OperatingSegments, nrg:WestAndOther



Period End2020-03-312019-03-31
Value41-23
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest28.5-23.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.1-1.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments nrg:WestAndOther53.9-30.3

us-gaap:OperatingSegments, stpr:TX



Period End2020-03-312019-03-31
Value162150
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest112.5153.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.48.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments stpr:TX12.013.0

us-gaap:OperatingSegments, us-gaap:Corporate



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value-82-102-107-151-100-1394349-134-126-215-161-135-137-171-202-295
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest-56.9-85.0-28.2-80.3-102.0911.1111.5-103.9-54.312.9-82.1-131.166.215.1-45.7117.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-4.3-4.6-4.3-8.5-5.6-70.016.8-7.0-6.9-8.6-5.3-5.0-5.0-6.8-5.1-11.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments us-gaap:Corporate0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest

us-gaap:IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-31
Value121346337418994-93306121233-166719099-170-891128-163-57271-206-9829868-483
Percentage of IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.3157.814.910.65.3-4.714.76.312.8-66.86.23.7-6.2-35.23.2-6.2-1.85.9-5.7-2.88.52.3-23.2

Income Loss From Continuing Operations Before Income Taxes Domestic

Income Loss From Continuing Operations Before Income Taxes Foreign

Income Loss From Continuing Operations Attributable To Noncontrolling Entity

Nonoperating Income Expense

us-gaap:NonoperatingIncomeExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-30
Value-100-89-160-132-123-154-103-205-174-320-180-240-254-343-313-338-408-246-265-258-285-285-278-295-278-229-219-217-191-151-156-178-278-679-142-117-135-167
Percentage of NonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-5.2-4.1-6.4-7.4-6.9-7.7-5.0-10.6-9.5-12.8-5.9-8.9-9.2-13.5-7.9-12.8-12.6-8.2-6.0-7.6-7.4-6.8-6.1-8.1-8.0-6.6-7.5-10.4-8.2-7.0-8.4-6.7-12.2-34.0-5.3-5.5-6.1-5.7

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value1172731025763-310
Percentage of NonoperatingIncomeExpense-1.0-19.1-16.9-2.3-8.1-16.2-6.8-2.9-1.70.9-5.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.81.10.20.61.30.30.30.2-0.10.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:GuarantorSubsidiaries0.00.00.00.00.00.00.00.00.00.00.0

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-31-9-743-24-2520-37-26-15927
Percentage of NonoperatingIncomeExpense31.010.146.2-2.319.516.2-19.418.014.949.7-15.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.6-0.4-3.00.2-1.3-1.31.0-1.9-1.4-6.40.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries0.00.00.00.00.00.00.00.00.00.00.0

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value195215444294200-10342249239-858352
Percentage of NonoperatingIncomeExpense-195.0-241.6-277.5-222.7-162.66.5-332.0-121.5-137.4268.1-195.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.19.817.716.511.2-0.516.512.913.1-34.411.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-265-312-557-432-309-144-472-360-333781-500
Percentage of NonoperatingIncomeExpense265.0350.6348.1327.3251.293.5458.3175.6191.4-244.1277.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-13.8-14.2-22.2-24.2-17.4-7.2-22.7-18.7-18.331.3-16.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations0.00.00.00.00.00.00.00.00.00.00.0

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-12-312009-09-302009-03-31
Value23-33436-14-1278-1364-4-79492521138547-17-737189-126-31163-61-149-113-13-120-80-630-1058911765114166298
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.2-152.30.2-0.10.2-0.60.30.4-0.10.10.20.1-0.1-3.11.20.90.746.01.1-0.5-1.91.71.9-3.5-0.94.7-2.1-7.2-4.8-0.6-6.4-3.0-27.7-5.33.35.52.95.35.718.0

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value0000029122108113-5980
Percentage of IncomeTaxExpenseBenefit0.0-0.00.0-0.00.0-241.71742.91350.0-11300.0-19933.30.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.01.55.95.66.2-23.90.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:GuarantorSubsidiaries0.00.00.00.00.00.00.00.00.00.00.0

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value02110-741-7155-550
Percentage of IncomeTaxExpenseBenefit0.0-0.116.7-100.00.058.3585.7-887.5-5500.0-1833.30.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.10.00.10.0-0.42.0-3.73.0-2.20.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries0.00.00.00.00.00.00.00.00.00.00.0

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value23-33455-24-34-156-32-1626061
Percentage of IncomeTaxExpenseBenefit100.0100.183.3200.0100.0283.3-2228.6-400.016200.020200.016.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.2-152.40.2-0.10.2-1.7-7.5-1.7-8.924.30.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.00.0

Income Taxes Paid Net

Profit Loss

us-gaap:ProfitLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-12-312009-09-302009-03-31
Value1213385372202482-13-4896233-1655163-642-203-1055393-27647-635867-9-13697182-80-67-290143137-3278259-206-55621-2602232105833278198
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 RevenueFromContractWithCustomerExcludingAssessedTax6.3154.214.911.327.1-0.7-2.35.012.8-66.35.3-23.8-7.4-41.79.9-10.51.5-211.21.5-0.3-3.62.34.0-2.2-1.9-10.44.14.7-15.70.312.0-11.1-2.127.3-13.08.39.82.61.59.511.9

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302009-09-30
Value1063349313198480-48-7371282-1518177-601-153-1001456-26877-6304660-124-70158-97-47114148-314-52163-210-159563-329318226
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.5152.612.511.127.0-2.4-3.53.715.5-60.85.8-22.3-5.5-39.511.5-10.22.4-209.41.50.0-3.2-1.73.5-2.7-1.33.35.1-15.1-2.27.5-11.3-5.924.7-16.511.87.8

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value256289543388256137304207329-390405
Percentage of ComprehensiveIncomeNetOfTax241.58.6173.5196.053.3-285.4-416.4291.5116.725.7228.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax13.313.221.721.814.46.914.710.718.0-15.613.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:GuarantorSubsidiaries0.00.00.00.00.00.00.00.00.00.00.0

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-1954-354255-8171149-1-513193
Percentage of ComprehensiveIncomeNetOfTax-17.91.6-11.221.211.516.7-234.2209.9-0.433.8109.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.02.5-1.42.43.1-0.48.27.7-0.1-20.56.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries0.00.00.00.00.00.00.00.00.00.00.0

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value1063349313198480-46-8671283-1518178
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.095.8117.8100.0100.4100.0100.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.5152.612.511.127.0-2.3-4.13.715.5-60.85.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-237-343-508-430-311-131-462-356-329904-599
Percentage of ComprehensiveIncomeNetOfTax-223.6-10.2-162.3-217.2-64.8272.9632.9-501.4-116.7-59.6-338.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-12.3-15.6-20.3-24.1-17.5-6.6-22.3-18.5-18.036.2-19.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations0.00.00.00.00.00.00.00.00.00.00.0

Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest

Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest

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
Value1213383372201482-12-7272279-1535171-626-163-987402-27182-631466-14-120119168-97-56-290124130-328516-1251-207-109-55621-260-152232115833278433198
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 RevenueFromContractWithCustomerExcludingAssessedTax6.3154.114.911.327.1-0.6-3.53.715.3-61.55.6-23.2-5.9-39.010.2-10.32.5-209.71.5-0.4-3.12.83.7-2.7-1.6-10.43.64.4-15.825.0-0.011.6-11.1-5.1-2.127.3-13.0-0.88.39.92.61.59.519.411.9

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value269261588389255148306211331-316342
Percentage of NetIncomeLoss222.37.7158.1193.552.9-1233.3-425.0293.1118.620.6200.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax14.011.923.521.814.37.414.710.918.2-12.711.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:GuarantorSubsidiaries0.00.00.00.00.00.00.00.00.00.00.0

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-451-314354-41661492-396124
Percentage of NetIncomeLoss-3.31.5-8.321.411.233.3-230.6206.90.725.872.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.22.3-1.22.43.0-0.28.07.70.1-15.94.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries0.00.00.00.00.00.00.00.00.00.00.0

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value1213383372201482-12-7272279-1534171
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.099.9100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.3154.114.911.327.1-0.6-3.53.715.3-61.45.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-265-312-557-432-309-144-472-360-333712-466
Percentage of NetIncomeLoss-219.0-9.2-149.7-214.9-64.11200.0655.6-500.0-119.4-46.4-272.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-13.8-14.2-22.2-24.2-17.4-7.2-22.7-18.7-18.328.5-15.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:IntersegmentElimination



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value-1-111-271222-501941-852015-72043-7
Percentage of NetIncomeLoss-0.8-0.00.30.5-5.6-10183.3695.8130.60.45.511.7-2.44.3-2.010.72.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.1-0.00.00.1-1.561.3-24.14.90.1-3.40.70.6-0.30.81.1-0.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:IntersegmentElimination50.033.30.0-100.0900.0136.1104.4-34.9-0.50.00.00.00.00.00.00.0

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, nrg:East



Period End2020-03-312019-03-31
Value2499
Percentage of NetIncomeLoss19.820.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.25.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments nrg:East4.817.8

us-gaap:OperatingSegments, nrg:WestAndOther



Period End2020-03-312019-03-31
Value41-23
Percentage of NetIncomeLoss33.9-4.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.1-1.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments nrg:WestAndOther53.9-30.3

us-gaap:OperatingSegments, stpr:TX



Period End2020-03-312019-03-31
Value162150
Percentage of NetIncomeLoss133.931.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.48.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments stpr:TX12.013.0

us-gaap:OperatingSegments, us-gaap:Corporate



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value-1053165-114-137284-1254-23-244-148-87-220-920-171-28219-449
Percentage of NetIncomeLoss-86.893.6-30.6-68.258.910450.031.9-338.9-53.05.7-128.7147.0104.928.64.7165.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-5.5144.2-4.6-7.716.0-63.0-1.1-12.7-8.1-3.5-7.2-34.1-6.2-11.10.5-17.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments us-gaap:Corporate0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Income Loss Available To Common Stockholders Basic

Net Income Loss Available To Common Stockholders Diluted

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312012-09-302012-06-302011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-30
Value121372201482-7272279-3248-57618-26222120856276
Percentage of NetIncomeLossAvailableToCommonStockholdersDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.314.911.327.1-3.53.715.3-0.111.4-2.127.1-13.18.29.82.59.5

Net Income Loss Attributable To Noncontrolling Interest

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
Value128221253195279171953010628114502294723752233182547025205294203035531491314223268032882399884036540330406654006937629349613390234863344923537135128272202785628530267152476025336250432689627419245782337824808
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

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value78027486777069796756780679677754
Percentage of Assets60.859.781.676.170.973.469.633.3
Percentage of Assets60.859.781.676.170.973.469.633.3
Percentage of Assets srt:GuarantorSubsidiaries100.0100.0100.0100.0100.0100.0100.0100.0

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value216126932806246623312770286215993
Percentage of Assets16.921.529.526.924.526.125.068.6
Percentage of Assets16.921.529.526.924.526.125.068.6
Percentage of Assets srt:NonGuarantorSubsidiaries100.0100.0100.0100.0100.0100.0100.0100.0

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value96248641575251875429605768008270
Percentage of Assets75.169.060.456.657.057.059.435.5
Percentage of Assets75.169.060.456.657.057.059.435.5
Percentage of Assets srt:ParentCompany100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:VariableInterestEntityPrimaryBeneficiary



Period End2020-03-312019-12-31
Value27101
Percentage of Assets0.20.8
Percentage of Assets0.20.8
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary100.0100.0

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value-6765-6289-6801-5461-4986-6005-6179-8467
Percentage of Assets-52.8-50.2-71.4-59.5-52.3-56.5-54.0-36.3
Percentage of Assets-52.8-50.2-71.4-59.5-52.3-56.5-54.0-36.3
Percentage of Assets srt:ConsolidationEliminations100.0100.0100.0100.0100.0100.0100.0100.0

Liabilities

us-gaap:Liabilities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-31
Value112861085311079108001105011843123672080721414212722169521671253632586325979262782697227117278212801928641286792810226403243182318423733239402492624346190811970420648187971658016760171941857618950163101543417438
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets88.086.6116.3117.8115.9111.4108.090.790.291.285.286.086.285.282.583.682.582.569.669.471.070.570.170.269.668.468.169.470.569.370.170.772.470.467.066.268.769.169.166.466.070.3

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value40243931415838984203420450833900
Percentage of Liabilities35.736.237.536.138.035.541.118.3
Percentage of Assets31.431.443.642.544.139.644.416.7
Percentage of Assets srt:GuarantorSubsidiaries51.652.553.555.962.253.963.850.3

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value6597479549196421218125510396
Percentage of Liabilities5.86.98.68.55.810.310.148.9
Percentage of Assets5.16.010.010.06.711.511.044.6
Percentage of Assets srt:NonGuarantorSubsidiaries30.527.734.037.327.544.043.965.0

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value80886969730568176949727373537799
Percentage of Liabilities71.764.265.963.162.961.459.536.7
Percentage of Assets63.155.676.774.372.968.464.233.4
Percentage of Assets srt:ParentCompany84.080.7127.0131.4128.0120.1108.194.3

us-gaap:VariableInterestEntityPrimaryBeneficiary



Period End2020-03-312019-12-31
Value3236
Percentage of Liabilities0.30.3
Percentage of Assets0.20.3
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary118.535.6

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value-1485-794-1338-834-744-852-1324-591
Percentage of Liabilities-13.2-7.3-12.1-7.7-6.7-7.2-10.7-2.8
Percentage of Assets-11.6-6.3-14.0-9.1-7.8-8.0-11.6-2.5
Percentage of Assets srt:ConsolidationEliminations22.012.619.715.314.914.221.47.0

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
Value128221253195279171953010628114502294723752233182547025205294203035531491314223268032882399884036540330406654006937629349613390234863344923537135128272202785628530267152476025336250432689627419245782337824808
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

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value78027486777069796756780679677754
Percentage of LiabilitiesAndStockholdersEquity60.859.781.676.170.973.469.633.3
Percentage of Assets60.859.781.676.170.973.469.633.3
Percentage of Assets srt:GuarantorSubsidiaries100.0100.0100.0100.0100.0100.0100.0100.0

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value216126932806246623312770286215993
Percentage of LiabilitiesAndStockholdersEquity16.921.529.526.924.526.125.068.6
Percentage of Assets16.921.529.526.924.526.125.068.6
Percentage of Assets srt:NonGuarantorSubsidiaries100.0100.0100.0100.0100.0100.0100.0100.0

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value96248641575251875429605768008270
Percentage of LiabilitiesAndStockholdersEquity75.169.060.456.657.057.059.435.5
Percentage of Assets75.169.060.456.657.057.059.435.5
Percentage of Assets srt:ParentCompany100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value-6765-6289-6801-5461-4986-6005-6179-8467
Percentage of LiabilitiesAndStockholdersEquity-52.8-50.2-71.4-59.5-52.3-56.5-54.0-36.3
Percentage of Assets-52.8-50.2-71.4-59.5-52.3-56.5-54.0-36.3
Percentage of Assets srt:ConsolidationEliminations100.0100.0100.0100.0100.0100.0100.0100.0

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
Value347930883187304534583600428547534557441547604469544063957014636473467391807380108122858278727757838375967249694380317956638372558458759763386039637871378496714262088492
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 Assets27.124.633.533.236.333.937.420.719.218.918.717.718.521.122.320.322.522.520.219.820.121.119.620.624.022.420.820.122.722.623.426.029.628.425.623.825.526.531.029.126.634.2

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value33302810339328812697313831542921
Percentage of AssetsCurrent95.791.0106.594.678.087.273.666.2
Percentage of Assets26.022.435.631.428.329.527.512.5
Percentage of Assets srt:GuarantorSubsidiaries42.737.543.741.339.940.239.637.7

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value2874323983583964024541645
Percentage of AssetsCurrent8.214.012.511.811.511.210.637.3
Percentage of Assets2.23.44.23.94.23.84.07.1
Percentage of Assets srt:NonGuarantorSubsidiaries13.316.014.214.517.014.515.910.3

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value133462772262110888951978535
Percentage of AssetsCurrent38.320.322.720.431.524.946.212.1
Percentage of Assets10.45.07.66.811.48.417.32.3
Percentage of Assets srt:ParentCompany13.97.312.612.020.014.829.16.5

us-gaap:VariableInterestEntityPrimaryBeneficiary



Period End2020-03-312019-12-31
Value13
Percentage of AssetsCurrent0.00.1
Percentage of Assets0.00.0
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary3.73.0

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value-1472-781-1326-815-723-835-1301-591
Percentage of AssetsCurrent-42.3-25.3-41.6-26.8-20.9-23.2-30.4-13.4
Percentage of Assets-11.5-6.2-13.9-8.9-7.6-7.9-11.4-2.5
Percentage of Assets srt:ConsolidationEliminations21.812.419.514.914.513.921.17.0

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
Value759345243294859563135998076499112237521513197324351389165915182265214621642116195314813187225421291368170720871610114910141105112719392711295134472168181323042250118814941132777
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 Assets5.92.82.63.29.05.311.94.33.24.24.83.05.16.57.74.45.14.65.75.35.45.24.93.99.16.66.14.04.85.95.94.13.64.14.67.710.811.012.60.07.49.90.00.06.00.00.0

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value00000551300
Percentage of CashAndCashEquivalentsAtCarryingValue0.00.00.00.00.09.89.60.0
Percentage of Assets0.00.00.00.00.00.51.10.0
Percentage of Assets srt:GuarantorSubsidiaries0.00.00.00.00.00.71.60.0

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value19202627272822124
Percentage of CashAndCashEquivalentsAtCarryingValue2.55.810.79.23.15.01.612.5
Percentage of Assets0.10.20.30.30.30.30.20.5
Percentage of Assets srt:NonGuarantorSubsidiaries0.90.70.91.11.21.00.80.8

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value7403252172678324801207643
Percentage of CashAndCashEquivalentsAtCarryingValue97.594.289.390.896.985.388.864.9
Percentage of Assets5.82.62.32.98.74.510.52.8
Percentage of Assets srt:ParentCompany7.73.83.85.115.37.917.87.8

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
Value9151025137610498981019129713719031079127411629741166136212511018115714921413117913221554148211491214136612909829861075100071683410421008687734904700876464
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 Assets7.18.214.411.49.49.611.36.03.84.65.04.63.33.84.34.03.13.53.73.52.93.33.93.93.33.63.93.72.82.83.93.62.53.14.24.02.72.73.32.83.71.9

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value168412932049138312288941151911
Percentage of AccountsReceivableNetCurrent184.0126.1148.9131.8136.787.788.784.4
Percentage of Assets13.110.321.515.112.98.410.13.9
Percentage of Assets srt:GuarantorSubsidiaries21.617.326.419.818.211.514.411.7

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value137239194133199829745
Percentage of AccountsReceivableNetCurrent15.023.314.112.722.28.07.54.2
Percentage of Assets1.11.92.01.52.10.80.80.2
Percentage of Assets srt:NonGuarantorSubsidiaries6.38.96.95.48.53.03.40.3

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value53323342627715943494
Percentage of AccountsReceivableNetCurrent58.322.731.026.417.74.23.80.4
Percentage of Assets4.21.94.53.01.70.40.40.0
Percentage of Assets srt:ParentCompany5.52.77.45.32.90.70.70.0

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value-1439-740-1293-744-688000
Percentage of AccountsReceivableNetCurrent-157.3-72.2-94.0-70.9-76.60.00.00.0
Percentage of Assets-11.2-5.9-13.6-8.1-7.20.00.00.0
Percentage of Assets srt:ConsolidationEliminations21.311.819.013.613.8-0.0-0.0-0.0

Inventory Net

us-gaap:InventoryNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-31
Value37238336437039141240848552853263071311401111101711241161125211491153110912471051996781898861874904931393416392308320386418453463549541455
Percentage of InventoryNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.93.13.84.04.13.93.62.12.22.32.52.83.93.73.23.63.63.82.92.92.73.12.62.62.22.62.52.52.62.71.41.51.41.21.31.51.71.71.72.22.31.8

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value287272248254277278301338
Percentage of InventoryNet77.271.068.168.670.867.573.863.5
Percentage of Assets2.22.22.62.82.92.62.61.4
Percentage of Assets srt:GuarantorSubsidiaries3.73.63.23.64.13.63.84.4

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value85111116116114134107148
Percentage of InventoryNet22.829.031.931.429.232.526.227.8
Percentage of Assets0.70.91.21.31.21.30.90.6
Percentage of Assets srt:NonGuarantorSubsidiaries3.94.14.14.74.94.83.70.9

Prepaid Expense And Other Assets Current

us-gaap:PrepaidExpenseAndOtherAssetsCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value290245271277285302248328326261354400454423369406461442460516474447475537599498442415724535217606272273245298296
Percentage of PrepaidExpenseAndOtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.32.02.83.03.02.82.21.41.41.11.41.61.51.41.21.31.41.31.21.31.21.11.21.41.71.51.31.22.01.50.82.21.01.01.01.21.1

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value222170178190192180160122
Percentage of PrepaidExpenseAndOtherAssetsCurrent76.669.465.768.667.459.664.546.7
Percentage of Assets1.71.41.92.12.01.71.40.5
Percentage of Assets srt:GuarantorSubsidiaries2.82.32.32.72.82.32.01.6

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value88151111323530
Percentage of PrepaidExpenseAndOtherAssetsCurrent2.83.35.54.03.910.614.111.5
Percentage of Assets0.10.10.20.10.10.30.30.1
Percentage of Assets srt:NonGuarantorSubsidiaries0.40.30.50.40.51.21.20.2

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value6067787682905327
Percentage of PrepaidExpenseAndOtherAssetsCurrent20.727.328.827.428.829.821.410.3
Percentage of Assets0.50.50.80.80.90.80.50.1
Percentage of Assets srt:ParentCompany0.60.81.41.51.51.50.80.3

Property Plant And Equipment Gross

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
Value1832175217591684161018112652453446794465643761806602-63146424610770936804896986118261789075847230688865736264595956805417519449764768457043714170398737963606323630522343
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 Assets14.314.018.518.416.917.023.219.819.719.125.324.522.4-20.820.419.421.720.722.421.320.519.418.919.219.719.418.017.316.115.419.117.916.717.117.716.515.914.113.213.213.19.4

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
Value25732593261526102650304835991277413911139081533215302179421791218203183821876318732219852230422276223672218121576196441985120600204542040420268158661531814376136211284312283115791251711844116271156411545
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 Assets20.120.727.428.527.828.731.455.758.659.660.260.761.059.057.858.557.457.055.055.355.255.055.457.356.258.659.159.357.757.758.355.050.451.051.948.546.246.543.247.349.546.5

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value13721483149414941512193823722507
Percentage of PropertyPlantAndEquipmentNet53.357.257.157.257.163.665.918.0
Percentage of Assets10.711.815.716.315.918.220.710.8
Percentage of Assets srt:GuarantorSubsidiaries17.619.819.221.422.424.829.832.3

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value104695296596598795710773695
Percentage of PropertyPlantAndEquipmentNet40.736.736.937.037.231.429.926.6
Percentage of Assets8.27.610.110.510.49.09.415.8
Percentage of Assets srt:NonGuarantorSubsidiaries48.435.434.439.142.334.537.623.1

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value155158156151151153150237
Percentage of PropertyPlantAndEquipmentNet6.06.16.05.85.75.04.21.7
Percentage of Assets1.21.31.61.61.61.41.31.0
Percentage of Assets srt:ParentCompany1.61.82.72.92.82.52.22.9

us-gaap:VariableInterestEntityPrimaryBeneficiary



Period End2020-03-312019-12-31
Value071
Percentage of PropertyPlantAndEquipmentNet0.02.7
Percentage of Assets0.00.6
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary0.070.3

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value0000000-4
Percentage of PropertyPlantAndEquipmentNet0.00.00.00.00.00.00.0-0.0
Percentage of Assets0.00.00.00.00.00.00.0-0.0
Percentage of Assets srt:ConsolidationEliminations-0.0-0.0-0.0-0.0-0.0-0.0-0.00.0

Investments In Affiliates Subsidiaries Associates And Joint Ventures

us-gaap:ConsolidatedEntities

us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value158710786436477446477266
Percentage of InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.25.78.34.85.04.24.21.1
Percentage of Assets srt:GuarantorSubsidiaries2.09.510.16.27.15.76.03.4

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value51224785467741913765470743797581
Percentage of InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures3241.8673.9595.0961.2789.31055.4918.02850.0
Percentage of Assets39.938.249.145.739.544.338.232.5
Percentage of Assets srt:ParentCompany53.255.481.380.869.377.764.491.7

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value-5280-5495-5463-4627-4242-5153-4856-7847
Percentage of InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures-3341.8-773.9-695.0-1061.2-889.3-1155.4-1018.0-2950.0
Percentage of Assets-41.2-43.9-57.3-50.5-44.5-48.5-42.4-33.7
Percentage of Assets srt:ConsolidationEliminations78.087.480.384.785.185.878.692.7

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
Value579579591573573573539539539539662662662662999999999999250325552520257424522116203819851953195419541956188618861886188618591863186318681713171317181718
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 Assets4.54.66.26.26.05.44.72.32.32.32.62.62.32.23.23.23.13.06.36.36.26.36.15.65.85.95.65.75.55.66.96.86.67.17.57.47.46.96.27.07.36.9

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value400359359359360359359360
Percentage of Goodwill69.162.060.762.762.862.766.666.8
Percentage of Assets3.12.93.83.93.83.43.11.5
Percentage of Assets srt:GuarantorSubsidiaries5.14.84.65.15.34.64.54.6

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value179220232214213214180179
Percentage of Goodwill30.938.039.337.337.237.333.433.2
Percentage of Assets1.41.82.42.32.22.01.60.8
Percentage of Assets srt:NonGuarantorSubsidiaries8.38.28.38.79.17.76.31.1

Finite Lived Intangible Assets Net

us-gaap:FiniteLivedIntangibleAssetsNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-31
Value7697898285615805916021860172617461838189319572036210621802256231023712428249125672880143413001140114111201176120011881256134014191561158916861776154116861777815
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.06.38.76.16.15.65.38.17.37.57.27.56.76.76.76.96.97.05.96.06.26.37.23.83.73.43.33.23.33.44.44.54.75.36.36.36.76.65.66.97.63.3

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value729375390402414422403455
Percentage of FiniteLivedIntangibleAssetsNet94.847.547.171.771.471.466.926.1
Percentage of Assets5.73.04.14.44.34.03.52.0
Percentage of Assets srt:GuarantorSubsidiaries9.35.05.05.86.15.45.15.9

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value4041443815916616919955
Percentage of FiniteLivedIntangibleAssetsNet5.252.552.928.328.628.633.13.2
Percentage of Assets0.33.34.61.71.71.61.70.2
Percentage of Assets srt:NonGuarantorSubsidiaries1.915.415.66.47.16.17.00.3

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value0000000-3
Percentage of FiniteLivedIntangibleAssetsNet0.00.00.00.00.00.00.0-0.2
Percentage of Assets0.00.00.00.00.00.00.0-0.0
Percentage of Assets srt:ConsolidationEliminations-0.0-0.0-0.0-0.0-0.0-0.0-0.00.0

Deferred Tax Assets Liabilities Net

Other Assets Noncurrent

us-gaap:OtherAssetsNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-31
Value225240252271255289281655681629644659117211791198123911511214142614051404124412811307740689578545597392392352336324274198208222156148125
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.81.92.63.02.72.72.52.92.92.72.52.64.03.93.83.93.53.73.63.53.53.13.23.52.22.01.71.51.71.41.41.21.31.31.10.80.80.80.60.60.5

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value1631451511481431339250
Percentage of OtherAssetsNoncurrent72.460.459.954.656.146.032.77.9
Percentage of Assets1.31.21.61.61.51.30.80.2
Percentage of Assets srt:GuarantorSubsidiaries2.11.91.92.12.11.71.20.6

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value27303030307170124
Percentage of OtherAssetsNoncurrent12.012.511.911.111.824.624.919.7
Percentage of Assets0.20.20.30.30.30.70.60.5
Percentage of Assets srt:NonGuarantorSubsidiaries1.21.11.11.21.32.62.40.8

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value356571969497119120
Percentage of OtherAssetsNoncurrent15.627.128.235.436.933.642.319.1
Percentage of Assets0.30.50.71.01.00.91.00.5
Percentage of Assets srt:ParentCompany0.40.81.21.91.71.61.81.5

us-gaap:VariableInterestEntityPrimaryBeneficiary



Period End2020-03-312019-12-31
Value2627
Percentage of OtherAssetsNoncurrent11.611.2
Percentage of Assets0.20.2
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary96.326.7

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value000-3-12-1200
Percentage of OtherAssetsNoncurrent0.00.00.0-1.1-4.7-4.20.00.0
Percentage of Assets0.00.00.0-0.0-0.1-0.10.00.0
Percentage of Assets srt:ConsolidationEliminations-0.0-0.0-0.00.10.20.2-0.0-0.0

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
Value285223592564229419452398272336633708331737053520419743824301451443384375433644694509485945434746422542044382441151624677477756986885567139953105299842204482437237626581
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 Assets22.218.826.925.020.422.623.816.015.614.214.514.014.314.413.714.413.313.310.811.111.211.911.312.612.112.412.612.814.613.317.520.524.121.216.112.312.015.716.317.816.126.5

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value21992047232020652298242931922248
Percentage of LiabilitiesCurrent77.186.890.590.0118.1101.3117.267.8
Percentage of Assets17.216.324.422.524.122.927.99.6
Percentage of Assets srt:GuarantorSubsidiaries28.227.329.929.634.031.140.129.0

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value204247333299-4076931
Percentage of LiabilitiesCurrent7.210.513.013.0-0.20.02.828.1
Percentage of Assets1.62.03.53.3-0.00.00.74.0
Percentage of Assets srt:NonGuarantorSubsidiaries9.49.211.912.1-0.20.02.75.8

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value19218461237745374804757824
Percentage of LiabilitiesCurrent67.435.948.232.519.233.527.824.8
Percentage of Assets15.06.813.08.13.97.66.63.5
Percentage of Assets srt:ParentCompany20.09.821.514.46.913.311.110.0

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value-1472-781-1326-815-723-835-1302-591
Percentage of LiabilitiesCurrent-51.6-33.1-51.7-35.5-37.2-34.8-47.8-17.8
Percentage of Assets-11.5-6.2-13.9-8.9-7.6-7.9-11.4-2.5
Percentage of Assets srt:ConsolidationEliminations21.812.419.514.914.513.921.17.0

Long Term Debt Current

us-gaap:LongTermDebtCurrent



Period End2020-03-312019-12-31
Value64088
Percentage of LongTermDebtCurrent100.0100.0
Percentage of Assets5.00.7

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-31
Value1000000.00.0
Percentage of LongTermDebtCurrent0.20.0
Percentage of Assets0.00.0
Percentage of Assets srt:GuarantorSubsidiaries0.00.0

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-31
Value45
Percentage of LongTermDebtCurrent0.65.7
Percentage of Assets0.00.0
Percentage of Assets srt:NonGuarantorSubsidiaries0.20.2

srt:ParentCompany



Period End2020-03-312019-12-31
Value63583
Percentage of LongTermDebtCurrent99.294.3
Percentage of Assets5.00.7
Percentage of Assets srt:ParentCompany6.61.0

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
Value708722866723697862824975787881915757872895945898845869117310801045106010981103108210381140119610541170124613501080808974842568783765595693447
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 Assets5.55.89.17.97.38.17.24.23.33.83.63.03.02.93.02.92.62.62.92.72.62.62.72.93.13.13.33.53.03.34.64.83.83.03.93.32.32.92.82.43.01.8

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value101691813159371515693705609
Percentage of AccountsPayableCurrent143.5127.1151.8129.6217.480.485.669.1
Percentage of Assets7.97.313.810.215.96.56.22.6
Percentage of Assets srt:GuarantorSubsidiaries13.012.316.913.422.48.98.87.9

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value125141146107-218645547
Percentage of AccountsPayableCurrent17.719.516.914.8-31.37.46.75.3
Percentage of Assets1.01.11.51.2-2.30.60.50.2
Percentage of Assets srt:NonGuarantorSubsidiaries5.85.25.24.3-9.42.31.90.3

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value1006403698423881056455
Percentage of AccountsPayableCurrent142.155.880.658.512.612.27.86.2
Percentage of Assets7.83.27.34.60.91.00.60.2
Percentage of Assets srt:ParentCompany10.54.712.18.21.61.70.90.7

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value-1439-740-1293-744-688000
Percentage of AccountsPayableCurrent-203.2-102.5-149.3-102.9-98.70.00.00.0
Percentage of Assets-11.2-5.9-13.6-8.1-7.20.00.00.0
Percentage of Assets srt:ConsolidationEliminations21.311.819.013.613.8-0.0-0.0-0.0

Other Accrued Liabilities Current

us-gaap:OtherAccruedLiabilitiesCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value550663625601550680659719662734830810887543115098298156812221082104755312001065950480567281307298215
Percentage of OtherAccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.35.36.66.65.86.45.83.12.83.13.33.23.01.83.73.13.01.73.12.72.61.43.02.82.71.41.61.11.11.30.9

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value259280271258244291282304
Percentage of OtherAccruedLiabilitiesCurrent47.142.243.442.944.442.842.841.4
Percentage of Assets2.02.22.82.82.62.72.51.3
Percentage of Assets srt:GuarantorSubsidiaries3.33.73.53.73.63.73.53.9

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value3144514257364064
Percentage of OtherAccruedLiabilitiesCurrent5.66.68.27.010.45.36.18.7
Percentage of Assets0.20.40.50.50.60.30.30.3
Percentage of Assets srt:NonGuarantorSubsidiaries1.41.61.81.72.41.31.40.4

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value260339303301249353337401
Percentage of OtherAccruedLiabilitiesCurrent47.351.148.550.145.351.951.154.6
Percentage of Assets2.02.73.23.32.63.32.91.7
Percentage of Assets srt:ParentCompany2.73.95.35.84.65.85.04.8

Accrued Income Taxes Current

Other Liabilities Current

Liabilities Noncurrent

us-gaap:LiabilitiesNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-31
Value84348494851585069105944596441714417706179551799018151211662148121678217642263422742234852355024132238202355921657200931898019351195291976419669143041400613763131261258513655141961435614468119381167210857
Percentage of LiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets65.867.889.492.795.588.984.274.774.577.070.672.071.970.868.869.369.369.258.758.359.858.658.857.657.556.055.556.655.956.052.550.348.249.150.853.956.753.452.848.649.943.8

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value18251884183818331905177518911652
Percentage of LiabilitiesNoncurrent21.622.221.621.520.918.819.69.2
Percentage of Assets14.215.019.320.020.016.716.57.1
Percentage of Assets srt:GuarantorSubsidiaries23.425.223.726.328.222.723.721.3

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value455500621620646121811799465
Percentage of LiabilitiesNoncurrent5.45.97.37.37.112.912.252.7
Percentage of Assets3.54.06.56.86.811.510.340.6
Percentage of Assets srt:NonGuarantorSubsidiaries21.118.622.125.127.744.041.259.2

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value61676123606860726575646965966975
Percentage of LiabilitiesNoncurrent73.172.171.371.472.268.568.438.8
Percentage of Assets48.148.963.766.269.060.957.629.9
Percentage of Assets srt:ParentCompany64.170.9105.5117.1121.1106.897.084.3

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value-13-13-12-19-21-17-220
Percentage of LiabilitiesNoncurrent-0.2-0.2-0.1-0.2-0.2-0.2-0.20.0
Percentage of Assets-0.1-0.1-0.1-0.2-0.2-0.2-0.20.0
Percentage of Assets srt:ConsolidationEliminations0.20.20.20.30.40.30.4-0.0

Long Term Debt

us-gaap:LongTermDebt



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-06-192018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-312009-12-31
Value6592604262576042665666917436160921201658416633171321712519465194061941119253192881962020041202922050920366207641898817477168041669916610164571586611342105561011897299185888691048295
Percentage of LongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets51.448.265.765.969.863.064.970.10.069.871.367.367.966.263.961.661.359.059.750.150.350.950.151.850.550.049.647.948.246.545.241.737.935.536.437.135.133.835.5

Long Term Debt Noncurrent

us-gaap:LongTermDebtNoncurrent



Period End2020-03-312019-12-31
Value58075803
Percentage of LongTermDebtNoncurrent100.0100.0
Percentage of Assets45.346.3

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-31
Value248302
Percentage of LongTermDebtNoncurrent4.35.2
Percentage of Assets1.92.4
Percentage of Assets srt:GuarantorSubsidiaries3.24.0

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-31
Value2428
Percentage of LongTermDebtNoncurrent0.40.5
Percentage of Assets0.20.2
Percentage of Assets srt:NonGuarantorSubsidiaries1.11.0

srt:ParentCompany



Period End2020-03-312019-12-31
Value55355473
Percentage of LongTermDebtNoncurrent95.394.3
Percentage of Assets43.243.7
Percentage of Assets srt:ParentCompany57.563.3

Deferred Tax Liabilities Noncurrent

Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent

Minority Interest

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
Value1076108410361016108971811771130113666411161135148793014801554154790014781527154984713851254123069513771417147473589687881035662259811338201054885519392
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 Assets8.48.710.911.111.46.810.34.94.82.84.44.55.13.14.74.94.72.73.73.83.82.13.53.33.52.13.94.14.22.13.33.22.81.32.52.44.53.03.83.62.21.6

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value438399412399408288410410
Percentage of OtherLiabilitiesNoncurrent40.736.839.839.337.540.134.861.7
Percentage of Assets3.43.24.34.44.32.73.61.8
Percentage of Assets srt:GuarantorSubsidiaries5.65.35.35.76.03.75.15.3

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value120153160148149198197201
Percentage of OtherLiabilitiesNoncurrent11.214.115.414.613.727.616.730.3
Percentage of Assets0.91.21.71.61.61.91.70.9
Percentage of Assets srt:NonGuarantorSubsidiaries5.65.75.76.06.47.16.91.3

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value518532464469532232570391
Percentage of OtherLiabilitiesNoncurrent48.149.144.846.248.932.348.458.9
Percentage of Assets4.04.24.95.15.62.25.01.7
Percentage of Assets srt:ParentCompany5.46.28.19.09.83.88.44.7

us-gaap:VariableInterestEntityPrimaryBeneficiary



Period End2020-03-312019-12-31
Value48
Percentage of OtherLiabilitiesNoncurrent0.40.7
Percentage of Assets0.00.1
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary14.87.9

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
Value444444444444444444444444444444333333333333
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 Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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
Value-1570-1616-4991-5355-5548-6022-6001-5920-5982-6268-4713-4874-4238-3787-2791-3179-2977-3007335833463413358835643445359436954272417941244494400240263777398740994156353838003817338833322423
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 Assets-12.2-12.9-52.4-58.4-58.2-56.7-52.4-25.8-25.2-26.9-18.5-19.3-14.4-12.5-8.9-10.1-9.1-9.18.48.38.58.88.99.210.310.912.312.111.712.814.714.513.214.916.616.414.114.113.913.814.39.8

Treasury Stock Value

us-gaap:TreasuryStockValue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-31
Value51895039492046864371363233342871247423862386239223922399239924062406241323302166205919831939194019401942194219441944192019201922192219241881163316331503150313231163823
Percentage of TreasuryStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets40.540.251.651.145.934.229.112.510.410.29.49.58.17.97.67.77.47.35.85.45.14.94.85.25.55.75.65.65.55.57.16.96.77.27.66.46.55.65.55.45.03.3

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312009-09-302008-12-31
Value-207-192-158-99-96-94-58-60-61-72-91-100-124-135-142-203-195-173-188-170-191-174-55105-129-118-136-150-68-177174201305363432571667416306310
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-1.6-1.5-1.7-1.1-1.0-0.9-0.5-0.3-0.3-0.3-0.4-0.4-0.4-0.4-0.5-0.6-0.6-0.5-0.5-0.4-0.5-0.4-0.00.00.00.0-0.4-0.3-0.4-0.4-0.2-0.10.20.30.81.21.41.62.12.71.80.01.2

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-312009-12-312009-03-31
Value208552472516-127295558167357581732142-68339860319554-83934198260396744-21391-124-76216114826139
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.825.118.828.9-7.114.826.98.719.623.324.05.3-2.513.421.812.117.2-2.821.15.86.89.416.3-0.611.2-6.0-4.110.85.138.68.4

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value203-1466160091156-661908221725
Percentage of NetCashProvidedByUsedInOperatingActivities97.6-2.5140.0116.3-7.1391.9-11.8113.8230.3296.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.5-0.626.433.70.558.0-3.29.945.169.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:GuarantorSubsidiaries0.00.00.00.00.00.00.00.00.00.0

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value63-2351114-51-106303514-219688
Percentage of NetCashProvidedByUsedInOperatingActivities30.3-4.210.822.140.2-35.954.3307.8-61.3118.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.3-1.02.06.4-2.9-5.314.626.7-12.027.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries0.00.00.00.00.00.00.00.00.00.0

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-58589-240-198-85-755332-541-253-1539
Percentage of NetCashProvidedByUsedInOperatingActivities-27.9106.7-50.8-38.466.9-255.959.5-324.0-70.9-264.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-3.026.8-9.6-11.1-4.8-37.916.0-28.1-13.9-61.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-312009-12-312009-03-31
Value-68-58-489-931196-1461087-714-432-301-220-313-232-503148-326-143-253-372-590-27055-1205-1877124-836-543-228-194-227-259
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-3.5-2.6-19.5-5.267.2-7.352.4-37.0-23.7-12.1-7.2-11.6-8.4-19.93.7-12.4-4.4-8.4-8.4-17.4-7.11.3-26.4-51.83.6-40.2-29.2-11.4-8.8-10.6-15.6

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-57-50-376-56-60-81-45-52-80-70
Percentage of NetCashProvidedByUsedInInvestingActivities83.886.276.960.2-5.055.5-4.17.318.523.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-3.0-2.3-15.0-3.1-3.4-4.1-2.2-2.7-4.4-2.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:GuarantorSubsidiaries0.00.00.00.00.00.00.00.00.00.0

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-6-1-109-10356-56-247-734-401-355
Percentage of NetCashProvidedByUsedInInvestingActivities8.81.722.310.829.838.4-22.7102.892.8117.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.3-0.0-4.4-0.620.0-2.8-11.9-38.1-22.0-14.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries0.00.00.00.00.00.00.00.00.00.0

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value752841923711900-912382412179
Percentage of NetCashProvidedByUsedInInvestingActivities-1105.9-1450.0-188.8-764.575.36.2113.9-33.8-4.9-26.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax39.138.336.939.950.6-0.559.712.51.23.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.0

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-757-848-927-73800157-1570129
Percentage of NetCashProvidedByUsedInInvestingActivities1113.21462.1189.6793.50.0-0.014.422.0-0.0-42.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-39.3-38.6-37.0-41.40.00.07.6-8.10.05.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations0.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-312009-12-312009-03-31
Value293-386-42-972-748-860-1089472-49-54441171-153-30541-266-264-406-45538940-276907218416580527-232-408-543-184
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax15.2-17.6-1.7-54.5-42.0-43.2-52.524.5-2.7-21.81.36.3-5.5-12.01.0-10.1-8.2-13.5-10.311.51.0-6.619.96.011.927.928.3-11.6-18.4-25.4-11.1

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-12569-292-528-4-1056123-287-481-1643
Percentage of NetCashProvidedByUsedInFinancingActivities-42.7-17.9695.254.30.5122.8-11.3-60.8981.6302.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-6.53.1-11.7-29.6-0.2-53.05.9-14.9-26.4-65.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:GuarantorSubsidiaries0.00.00.00.00.00.00.00.00.00.0

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-591856-105-281162-208129506-340
Percentage of NetCashProvidedByUsedInFinancingActivities-20.1-4.7-133.310.837.6-18.819.127.3-1032.762.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-3.10.82.2-5.9-15.88.1-10.06.727.8-13.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries0.00.00.00.00.00.00.00.00.00.0

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-280-1321-733-1077-46334-874465-391188
Percentage of NetCashProvidedByUsedInFinancingActivities-95.6342.21745.2110.861.9-4.080.398.579.6-218.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-14.5-60.2-29.3-60.4-26.01.7-42.124.1-2.147.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.0

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value75784892773800-1571570-129
Percentage of NetCashProvidedByUsedInFinancingActivities258.4-219.7-2207.1-75.9-0.0-0.014.433.3-0.023.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax39.338.637.041.40.00.0-7.68.10.0-5.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations0.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-312009-12-312009-03-31
Value208552472516-127295558167357581732142-68339860319554-83934198260396744-21391-124-76216114826139
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.825.118.828.9-7.114.826.98.719.623.324.05.3-2.513.421.812.117.2-2.821.15.86.89.416.3-0.611.2-6.0-4.110.85.138.68.4

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value203-1466160091156-661908221725
Percentage of NetCashProvidedByUsedInOperatingActivities97.6-2.5140.0116.3-7.1391.9-11.8113.8230.3296.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.5-0.626.433.70.558.0-3.29.945.169.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:GuarantorSubsidiaries0.00.00.00.00.00.00.00.00.00.0

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value63-2351114-51-106303514-219688
Percentage of NetCashProvidedByUsedInOperatingActivities30.3-4.210.822.140.2-35.954.3307.8-61.3118.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.3-1.02.06.4-2.9-5.314.626.7-12.027.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries0.00.00.00.00.00.00.00.00.00.0

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-58589-240-198-85-755332-541-253-1539
Percentage of NetCashProvidedByUsedInOperatingActivities-27.9106.7-50.8-38.466.9-255.959.5-324.0-70.9-264.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-3.026.8-9.6-11.1-4.8-37.916.0-28.1-13.9-61.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.0

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
Value1213383372201482-12-7272279-1535171-626-163-987402-27182-631466-14-120119168-97-56-290124130-328516-1251-207-109-55621-260-152232115833278433198
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 RevenueFromContractWithCustomerExcludingAssessedTax6.3154.114.911.327.1-0.6-3.53.715.3-61.55.6-23.2-5.9-39.010.2-10.32.5-209.71.5-0.4-3.12.83.7-2.7-1.6-10.43.64.4-15.825.0-0.011.6-11.1-5.1-2.127.3-13.0-0.88.39.92.61.59.519.411.9

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value269261588389255148306211331-316342
Percentage of NetIncomeLoss222.37.7158.1193.552.9-1233.3-425.0293.1118.620.6200.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax14.011.923.521.814.37.414.710.918.2-12.711.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:GuarantorSubsidiaries0.00.00.00.00.00.00.00.00.00.00.0

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-451-314354-41661492-396124
Percentage of NetIncomeLoss-3.31.5-8.321.411.233.3-230.6206.90.725.872.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.22.3-1.22.43.0-0.28.07.70.1-15.94.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries0.00.00.00.00.00.00.00.00.00.00.0

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value1213383372201482-12-7272279-1534171
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.099.9100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.3154.114.911.327.1-0.6-3.53.715.3-61.45.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-265-312-557-432-309-144-472-360-333712-466
Percentage of NetIncomeLoss-219.0-9.2-149.7-214.9-64.11200.0655.6-500.0-119.4-46.4-272.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-13.8-14.2-22.2-24.2-17.4-7.2-22.7-18.7-18.328.5-15.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:IntersegmentElimination



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value-1-111-271222-501941-852015-72043-7
Percentage of NetIncomeLoss-0.8-0.00.30.5-5.6-10183.3695.8130.60.45.511.7-2.44.3-2.010.72.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.1-0.00.00.1-1.561.3-24.14.90.1-3.40.70.6-0.30.81.1-0.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:IntersegmentElimination50.033.30.0-100.0900.0136.1104.4-34.9-0.50.00.00.00.00.00.00.0

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, nrg:East



Period End2020-03-312019-03-31
Value2499
Percentage of NetIncomeLoss19.820.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.25.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments nrg:East4.817.8

us-gaap:OperatingSegments, nrg:WestAndOther



Period End2020-03-312019-03-31
Value41-23
Percentage of NetIncomeLoss33.9-4.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.1-1.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments nrg:WestAndOther53.9-30.3

us-gaap:OperatingSegments, stpr:TX



Period End2020-03-312019-03-31
Value162150
Percentage of NetIncomeLoss133.931.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.48.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments stpr:TX12.013.0

us-gaap:OperatingSegments, us-gaap:Corporate



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value-1053165-114-137284-1254-23-244-148-87-220-920-171-28219-449
Percentage of NetIncomeLoss-86.893.6-30.6-68.258.910450.031.9-338.9-53.05.7-128.7147.0104.928.64.7165.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-5.5144.2-4.6-7.716.0-63.0-1.1-12.7-8.1-3.5-7.2-34.1-6.2-11.10.5-17.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments us-gaap:Corporate0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Profit Loss

us-gaap:ProfitLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-12-312009-09-302009-03-31
Value1213385372202482-13-4896233-1655163-642-203-1055393-27647-635867-9-13697182-80-67-290143137-3278259-206-55621-2602232105833278198
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 RevenueFromContractWithCustomerExcludingAssessedTax6.3154.214.911.327.1-0.7-2.35.012.8-66.35.3-23.8-7.4-41.79.9-10.51.5-211.21.5-0.3-3.62.34.0-2.2-1.9-10.44.14.7-15.70.312.0-11.1-2.127.3-13.08.39.82.61.59.511.9

Depreciation Depletion And Amortization

us-gaap:DepreciationDepletionAndAmortization



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-12-312009-09-302009-03-31
Value10911291858551112227235267272260300388357309313393382396395427375386335318305298239234230238222205210208202224212169
Percentage of DepreciationDepletionAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value80555251542267636044100
Percentage of DepreciationDepletionAndAmortization73.449.157.160.063.543.159.827.825.516.536.8

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value1949322623213640525455
Percentage of DepreciationDepletionAndAmortization17.443.835.230.627.141.232.117.622.120.220.2

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value108788899888
Percentage of DepreciationDepletionAndAmortization9.27.17.79.49.415.78.04.03.43.02.9

us-gaap:ConsolidationItems

us-gaap:IntersegmentElimination



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value0000002000000000
Percentage of DepreciationDepletionAndAmortization0.00.00.00.00.00.01.80.00.00.00.00.00.00.00.00.0

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, nrg:East



Period End2020-03-312019-03-31
Value3326
Percentage of DepreciationDepletionAndAmortization30.330.6

us-gaap:OperatingSegments, nrg:WestAndOther



Period End2020-03-312019-03-31
Value811
Percentage of DepreciationDepletionAndAmortization7.312.9

us-gaap:OperatingSegments, stpr:TX



Period End2020-03-312019-03-31
Value5940
Percentage of DepreciationDepletionAndAmortization54.147.1

us-gaap:OperatingSegments, us-gaap:Corporate



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value9878887888888121514
Percentage of DepreciationDepletionAndAmortization8.37.17.79.49.415.76.23.53.43.02.93.12.73.14.24.5

Increase Decrease In Other Operating Capital Net

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value99-416214118270-271-26262139-1641180199-16-24723412156-19525533-144297129-653742241105
Percentage of IncreaseDecreaseInOtherOperatingCapitalNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value13058122221719125-277
Percentage of IncreaseDecreaseInOtherOperatingCapitalNet131.327.1103.481.9-2765.447.7-199.3

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value1456-731375-283339
Percentage of IncreaseDecreaseInOtherOperatingCapitalNet14.126.2-61.950.7-19.2-108.0243.9

srt:ParentCompany



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-45100-2402214121444
Percentage of IncreaseDecreaseInOtherOperatingCapitalNet-45.546.7-203.481.9-1584.60.4319.4

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value00309-309-1110350-350
Percentage of IncreaseDecreaseInOtherOperatingCapitalNet0.00.0261.9-114.44269.2133.6-251.8

Increase Decrease In Inventories

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-312009-12-312009-03-31
Value-68-58-489-931196-1461087-714-432-301-220-313-232-503148-326-143-253-372-590-27055-1205-1877124-836-543-228-194-227-259
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-3.5-2.6-19.5-5.267.2-7.352.4-37.0-23.7-12.1-7.2-11.6-8.4-19.93.7-12.4-4.4-8.4-8.4-17.4-7.11.3-26.4-51.83.6-40.2-29.2-11.4-8.8-10.6-15.6

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-57-50-376-56-60-81-45-52-80-70
Percentage of NetCashProvidedByUsedInInvestingActivities83.886.276.960.2-5.055.5-4.17.318.523.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-3.0-2.3-15.0-3.1-3.4-4.1-2.2-2.7-4.4-2.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:GuarantorSubsidiaries0.00.00.00.00.00.00.00.00.00.0

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-6-1-109-10356-56-247-734-401-355
Percentage of NetCashProvidedByUsedInInvestingActivities8.81.722.310.829.838.4-22.7102.892.8117.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.3-0.0-4.4-0.620.0-2.8-11.9-38.1-22.0-14.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries0.00.00.00.00.00.00.00.00.00.0

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value752841923711900-912382412179
Percentage of NetCashProvidedByUsedInInvestingActivities-1105.9-1450.0-188.8-764.575.36.2113.9-33.8-4.9-26.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax39.138.336.939.950.6-0.559.712.51.23.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.0

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-757-848-927-73800157-1570129
Percentage of NetCashProvidedByUsedInInvestingActivities1113.21462.1189.6793.50.0-0.014.422.0-0.0-42.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-39.3-38.6-37.0-41.40.00.07.6-8.10.05.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations0.00.00.00.00.00.00.00.00.00.0

Payments To Acquire Property Plant And Equipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-312009-12-312009-03-31
Value664576584943-346333358351218274268346276343279394306331252234168270237813639219185174233
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value50295841363455436045
Percentage of PaymentsToAcquirePropertyPlantAndEquipment75.864.476.370.773.579.1-15.912.916.812.8

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value6489611757425
Percentage of PaymentsToAcquirePropertyPlantAndEquipment9.18.910.515.512.22.3-0.322.520.77.1

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value101210878792112
Percentage of PaymentsToAcquirePropertyPlantAndEquipment15.226.713.213.814.318.6-2.02.75.93.4

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-312009-12-312009-03-31
Value293-386-42-972-748-860-1089472-49-54441171-153-30541-266-264-406-45538940-276907218416580527-232-408-543-184
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax15.2-17.6-1.7-54.5-42.0-43.2-52.524.5-2.7-21.81.36.3-5.5-12.01.0-10.1-8.2-13.5-10.311.51.0-6.619.96.011.927.928.3-11.6-18.4-25.4-11.1

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-12569-292-528-4-1056123-287-481-1643
Percentage of NetCashProvidedByUsedInFinancingActivities-42.7-17.9695.254.30.5122.8-11.3-60.8981.6302.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-6.53.1-11.7-29.6-0.2-53.05.9-14.9-26.4-65.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:GuarantorSubsidiaries0.00.00.00.00.00.00.00.00.00.0

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-591856-105-281162-208129506-340
Percentage of NetCashProvidedByUsedInFinancingActivities-20.1-4.7-133.310.837.6-18.819.127.3-1032.762.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-3.10.82.2-5.9-15.88.1-10.06.727.8-13.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries0.00.00.00.00.00.00.00.00.00.0

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-280-1321-733-1077-46334-874465-391188
Percentage of NetCashProvidedByUsedInFinancingActivities-95.6342.21745.2110.861.9-4.080.398.579.6-218.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-14.5-60.2-29.3-60.4-26.01.7-42.124.1-2.147.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.0

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value75784892773800-1571570-129
Percentage of NetCashProvidedByUsedInFinancingActivities258.4-219.7-2207.1-75.9-0.0-0.014.433.3-0.023.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax39.338.637.041.40.00.0-7.68.10.0-5.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations0.00.00.00.00.00.00.00.00.00.0

Proceeds From Issuance Of Long Term Debt

Payments For Repurchase Of Common Stock

Debt Instrument Interest Rate Stated Percentage

Effective Income Tax Rate Continuing Operations

us-gaap:EffectiveIncomeTaxRateContinuingOperations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-30
Value0.16-4.2560.016-0.0050.041-0.0160.0220.062-0.004-0.0450.0310.0390.019-0.3850.111-0.10.309-0.6180.4120.6540.349-2.03879999999999970.3280.6120.3160.533-0.8030.3131.076-0.0530.3680.59370.00.2880.2850.3580.5270.374
Percentage of EffectiveIncomeTaxRateContinuingOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

Share Based Compensation

us-gaap:ShareBasedCompensation



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312010-03-312009-12-312009-03-31
Value55564-1110131381188-137884131311108168180667
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value55564-1121968
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0210.069.246.2100.0

Deferred Tax Liabilities

Deferred Tax Assets Net

Unrecognized Tax Benefits

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 End2020-03-312019-12-312019-09-302019-06-302019-03-312019-01-012018-12-31
Value4464644824995174040
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.00.0

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-31
Value7981859195
Percentage of OperatingLeaseRightOfUseAsset17.717.517.618.218.4

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-31
Value251261271279289
Percentage of OperatingLeaseRightOfUseAsset56.356.256.255.955.9

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-31
Value116122126129133
Percentage of OperatingLeaseRightOfUseAsset26.026.326.125.925.7

Cash And Cash Equivalents Period Increase Decrease

nrg:AmortizationOfIntangiblesAndOutOfMarketContracts



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-312009-12-312009-03-31
Value710148624-2726222928411018321526133613191230913314248074-34
Percentage of AmortizationOfIntangiblesAndOutOfMarketContracts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value2387621-19722
Percentage of AmortizationOfIntangiblesAndOutOfMarketContracts28.630.057.187.5100.087.53.734.631.875.9

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value576103222-47
Percentage of AmortizationOfIntangiblesAndOutOfMarketContracts71.470.042.912.50.012.5-7.47.79.1-162.1

nrg:AssetImpairmentChargesIncludingEquityMethodInvestments



Period End2020-03-312019-09-302019-06-302019-03-312018-09-30
Value18107102
Percentage of AssetImpairmentChargesIncludingEquityMethodInvestments100.0100.0100.00.0100.0

nrg:ChangesInCollateralDepositsSupportingEnergyRiskManagementActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-312009-12-312009-03-31
Value9-244248-123-75-12-1811632386-115-74134-119194156-201-68101-213246197110-407-226-187176-172114312
Percentage of ChangesInCollateralDepositsSupportingEnergyRiskManagementActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value4-358242-114-78-11-16716228
Percentage of ChangesInCollateralDepositsSupportingEnergyRiskManagementActivities44.4145.8200.097.692.7104.091.792.399.4121.7

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value511-46-93-10-51-5
Percentage of ChangesInCollateralDepositsSupportingEnergyRiskManagementActivities55.6-45.8-100.02.47.3-4.083.32.80.6-21.7

nrg:ChangesInNuclearDecommissioningTrustLiability



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-312009-12-312009-03-31
Value8101089109734-918-3436171149-35-1-37615108101176
Percentage of ChangesInNuclearDecommissioningTrustLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value8101089109734-9
Percentage of ChangesInNuclearDecommissioningTrustLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Range

nrg:CommonStockAnnualDividendGrowthRate

srt:Maximum



Period End2020-03-31
Value0.09
Percentage of CommonStockAnnualDividendGrowthRate100.0

srt:Minimum



Period End2020-03-31
Value7.0
Percentage of CommonStockAnnualDividendGrowthRate7777.8

us-gaap:Range, us-gaap:StatementScenario

srt:Maximum, srt:ScenarioForecast



Period End2020-03-31
Value0.09
Percentage of CommonStockAnnualDividendGrowthRate100.0

srt:Minimum, srt:ScenarioForecast



Period End2020-03-31
Value0.07
Percentage of CommonStockAnnualDividendGrowthRate77.8

nrg:CommonStockDividendsProposedAnnualAmountPerShare



Period End2020-03-31
Value1.2
Percentage of CommonStockDividendsProposedAnnualAmountPerShare100.0

us-gaap:StatementScenario

srt:ScenarioForecast



Period End2020-03-31
Value1.2
Percentage of CommonStockDividendsProposedAnnualAmountPerShare100.0

us-gaap:StatementScenario, us-gaap:SubsequentEventType

us-gaap:ScenarioPlan, us-gaap:SubsequentEvent



Period End2020-01-212019-01-232018-02-15
Value1.20.00120.0012
Percentage of CommonStockDividendsProposedAnnualAmountPerShare0.00.00.0

nrg:ContractwithCustomerLiabilityIncreaseForCashPaymentsReceived



Period End2020-03-312019-12-312019-09-30
Value27-1-6
Percentage of ContractwithCustomerLiabilityIncreaseForCashPaymentsReceived100.0100.0100.0

nrg:DerivativeUnrealizedGainsOnOpenPositionsRelatedToTradingActivityNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value138-3131328811-301614-81111-16-2-46015141626-13-13-3828022099
Percentage of DerivativeUnrealizedGainsOnOpenPositionsRelatedToTradingActivityNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.0100.0

us-gaap:ConsolidatedEntities

nrg:EquityInEarningsOfConsolidatedSubsidiaries

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value316202109671-27
Percentage of EquityInEarningsOfConsolidatedSubsidiaries100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value262296537430299135466353332-710459
Percentage of EquityInEarningsOfConsolidatedSubsidiaries8733.31850.02685.021500.02990.01500.07766.75042.933200.035500.06557.1

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-265-312-557-432-309-144-472-360-333712-466
Percentage of EquityInEarningsOfConsolidatedSubsidiaries-8833.3-1950.0-2785.0-21600.0-3090.0-1600.0-7866.7-5142.9-33300.0-35600.0-6657.1

nrg:GainsLossesOnExtinguishmentOfDebtNonCashPortion



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-31
Value-1-40-470-22-19-1-2-50-3000-7-251184-2-70-1-3-2-19-20
Percentage of GainsLossesOnExtinguishmentOfDebtNonCashPortion100.0100.00.0100.00.0100.0100.0100.0100.0100.0100.00.00.00.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.00.0

us-gaap:ConsolidatedEntities

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302018-12-312018-09-302018-06-302018-03-312017-12-31
Value0-3000003
Percentage of GainsLossesOnExtinguishmentOfDebtNonCashPortion-0.075.00.0-0.0-0.0-0.0-0.0-6.0

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302018-12-312018-09-302018-06-302018-03-312017-12-31
Value-1-10-22-19-1-2-49
Percentage of GainsLossesOnExtinguishmentOfDebtNonCashPortion100.025.00.0100.0100.0100.0100.098.0

nrg:ImpairmentLosses



Period End2020-03-312018-12-312018-09-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value18250171114630702161081464653263
Percentage of ImpairmentLosses100.0100.00.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312018-12-312017-12-31
Value051304
Percentage of ImpairmentLosses0.020.076.2

srt:NonGuarantorSubsidiaries



Period End2020-03-312018-12-312017-12-31
Value1820246
Percentage of ImpairmentLosses100.080.014.4

srt:ParentCompany



Period End2020-03-312018-12-312017-12-31
Value004
Percentage of ImpairmentLosses0.00.00.2

us-gaap:ConsolidatedEntities

nrg:IntercompanyDividendProceedsFinancing

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value-63857-870-734-46-1116-1447
Percentage of IntercompanyDividendProceedsFinancing100.0100.0100.0100.0100.0100.0100.0100.0

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value-56-157-57290-290860125
Percentage of IntercompanyDividendProceedsFinancing88.9-18.36.6-39.57250.01433.3-0.0-8.6

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value-638-1548017-17-8250-214
Percentage of IntercompanyDividendProceedsFinancing1012.7-180.6-0.0-2.3425.0-13750.0-0.014.8

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value75784892742731173311161536
Percentage of IntercompanyDividendProceedsFinancing-1201.698.9-106.6-58.2-7775.012216.7-100.0-106.2

us-gaap:ConsolidatedEntities

nrg:IntercompanyDividendProceedsInvesting

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value75784892742731173311161536
Percentage of IntercompanyDividendProceedsInvesting100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value-757-848-927-427-311-733-1116-1536
Percentage of IntercompanyDividendProceedsInvesting-100.0-100.0-100.0-100.0-100.0-100.0-100.0-100.0

nrg:InvestmentsInProceedsFromSalesOfUnconsolidatedAffiliates



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302012-03-31
Value03-1013423-60-42-9-1-18-12-11-234-4-38-4-309-44-16-6528
Percentage of InvestmentsInProceedsFromSalesOfUnconsolidatedAffiliates0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

nrg:NetContributionsToDistributionsFromDiscontinuedOperations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0000-44-37-713-29
Percentage of NetContributionsToDistributionsFromDiscontinuedOperations0.00.00.00.0100.0100.0100.0100.0100.0

nrg:OtherComprehensiveIncomeLossNetOfTaxAndAdjustmentForNewAccountingStandard



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-15-59-3-22111
Percentage of OtherComprehensiveIncomeLossNetOfTaxAndAdjustmentForNewAccountingStandard100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-15-59-3-22111
Percentage of OtherComprehensiveIncomeLossNetOfTaxAndAdjustmentForNewAccountingStandard100.0100.0100.0100.0100.0100.0100.0

nrg:PaymentsForProceedsFromIntangibleAssets



Period End2020-03-312019-09-302019-06-302019-03-312018-09-30
Value8-1510-21
Percentage of PaymentsForProceedsFromIntangibleAssets100.0100.0100.00.0100.0

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-09-302018-09-30
Value8-15-21
Percentage of PaymentsForProceedsFromIntangibleAssets100.0100.0100.0

nrg:ProceedsFromSaleOfAssetsAndSaleOfDiscontinuedOperationsNet



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value154-24131314099353
Percentage of ProceedsFromSaleOfAssetsAndSaleOfDiscontinuedOperationsNet100.0100.0100.0100.0100.0100.0100.0

nrg:ReversalPreviouslyRecognizedUnrealizedGainsLossesAcquiredasPartofAcquisitionEconomicHedges



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-312016-09-302016-06-30
Value-1-103-12-11010-12-1172
Percentage of ReversalPreviouslyRecognizedUnrealizedGainsLossesAcquiredasPartofAcquisitionEconomicHedges100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0

nrg:ReversalPreviouslyRecognizedUnrealizedGainsLossesSettledPositionsEconomicHedges



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value-9-20118-11-19-12843-2-286-22-3533018
Percentage of ReversalPreviouslyRecognizedUnrealizedGainsLossesSettledPositionsEconomicHedges100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

nrg:ReversalPreviouslyUnrecognizedUnrealizedGainsLossesSettledPositionsTradingActivity



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-30
Value231162433154153-3-2-812-215213150-13-1-28-150-3080-1420-8-18-21
Percentage of ReversalPreviouslyUnrecognizedUnrealizedGainsLossesSettledPositionsTradingActivity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.00.0100.0100.00.0100.0100.0100.0100.0100.0

nrg:UnrealizedGainLossOnDerivativesMarkToMarketEconomicHedgingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value443-642120-48-69-71196176-2459-6-37-184-9835-84-7-3-27832674-119-268-5398-263-259140-1654143133-6445
Percentage of UnrealizedGainLossOnDerivativesMarkToMarketEconomicHedgingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems, us-gaap:ProductOrService

us-gaap:IntersegmentElimination, nrg:ProductsAndServicesDerivativeRevenue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value12247-28515100-241-264484
Percentage of UnrealizedGainLossOnDerivativesMarkToMarketEconomicHedgingActivities2.3733.3-73.4-1357.175.0-208.3349.3371.8246.9

us-gaap:ConsolidationItems, us-gaap:ProductOrService, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, nrg:ProductsAndServicesDerivativeRevenue, nrg:East



Period End2020-03-312019-03-31
Value-20-15
Percentage of UnrealizedGainLossOnDerivativesMarkToMarketEconomicHedgingActivities-45.5-75.0

us-gaap:OperatingSegments, nrg:ProductsAndServicesDerivativeRevenue, nrg:WestAndOther



Period End2020-03-312019-03-31
Value154
Percentage of UnrealizedGainLossOnDerivativesMarkToMarketEconomicHedgingActivities34.120.0

us-gaap:OperatingSegments, nrg:ProductsAndServicesDerivativeRevenue, stpr:TX



Period End2020-03-312019-03-31
Value031
Percentage of UnrealizedGainLossOnDerivativesMarkToMarketEconomicHedgingActivities0.0155.0

us-gaap:ProductOrService

nrg:ProductsAndServicesDerivativeRevenue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-4-18-21024120-995515-106
Percentage of UnrealizedGainLossOnDerivativesMarkToMarketEconomicHedgingActivities-9.1-600.0328.11147.6100.0206.2-79.7-21.1-54.1

nrg:UnrealizedGainLossonDerivativesMarkToMarketTradingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value115-41270458-4-512-141-513
Percentage of UnrealizedGainLossonDerivativesMarkToMarketTradingActivities100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccretionExpenseIncludingAssetRetirementObligations



Period End2020-03-312019-03-31
Value117
Percentage of AccretionExpenseIncludingAssetRetirementObligations100.0100.0

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-03-31
Value45
Percentage of AccretionExpenseIncludingAssetRetirementObligations36.471.4

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-03-31
Value72
Percentage of AccretionExpenseIncludingAssetRetirementObligations63.628.6

us-gaap:AdjustmentsToAdditionalPaidInCapitalOther



Period End2020-03-31
Value18
Percentage of AdjustmentsToAdditionalPaidInCapitalOther100.0

us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital



Period End2020-03-31
Value18
Percentage of AdjustmentsToAdditionalPaidInCapitalOther100.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-2155-3248-10
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-2155-3248-10
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0

us-gaap:AmortizationOfFinancingCostsAndDiscounts



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-312009-12-312009-03-31
Value667678-6131416152810021-2-2-3-4-30-4-5-1388899
Percentage of AmortizationOfFinancingCostsAndDiscounts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value00000141011
Percentage of AmortizationOfFinancingCostsAndDiscounts0.00.00.00.00.012.5-66.77.70.068.8

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value6676774663
Percentage of AmortizationOfFinancingCostsAndDiscounts100.0100.0100.0100.0100.087.5-66.746.242.918.8

us-gaap:AmortizationOfPowerContractsEmissionCredits



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value131213141310141113141312121013
Percentage of AmortizationOfPowerContractsEmissionCredits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value13121314131014111314
Percentage of AmortizationOfPowerContractsEmissionCredits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value433108-59-549272-807533-75-124-255551213-359-317541
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value215-716-72-7064-17023018
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect4.84.611.9-2.9-26.58.712.0226.7-185.5-7.1

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-2-6-2-1-8-7-217-134-29-31
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect-0.5-5.63.40.2-2.90.9-40.7178.723.412.2

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value414109-50-564352-730696165-271-272
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect95.6100.984.7102.7129.490.5130.6-220.0218.5106.7

us-gaap:CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value000043684030000-92-1322122
Percentage of CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations0.00.00.00.0100.0100.0100.00.00.00.00.0100.0100.0100.0100.0

us-gaap:CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value0000-2-22-7030000-21-32-29386
Percentage of CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations0.00.00.00.0100.0100.0100.00.00.00.00.0100.0100.0100.0100.0

us-gaap:CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value00008503240000-5315-186136
Percentage of CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations0.00.00.00.0100.0100.0100.00.00.00.00.0100.0100.0100.0100.0

us-gaap:CommonStockDividendsPerShareCashPaid



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-08-152012-08-152012-09-302012-06-302012-03-312011-09-30
Value0.30.030.030.030.030.030.030.030.030.030.030.030.00030.030.030.150.001450.150.140.150.140.140.140.120.120.120.120.090.090.090.090.090.00.00.0
Percentage of CommonStockDividendsPerShareCashPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:ContractWithCustomerLiabilityRevenueRecognized



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value13021191301916
Percentage of ContractWithCustomerLiabilityRevenueRecognized100.00.0100.0100.0100.00.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleRealizedGain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value210323914314
Percentage of DebtSecuritiesAvailableForSaleRealizedGain100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleRealizedLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value5227-2-2129-3-14
Percentage of DebtSecuritiesAvailableForSaleRealizedLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DepreciationAmortizationAndAccretionNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value10984105929256-82354131106-27
Percentage of DepreciationAmortizationAndAccretionNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value803166565926104696744
Percentage of DepreciationAmortizationAndAccretionNet73.436.962.960.964.146.4-126.819.551.141.5

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value20453228252239435654
Percentage of DepreciationAmortizationAndAccretionNet18.353.630.530.427.239.3-47.612.142.750.9

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value9878888988
Percentage of DepreciationAmortizationAndAccretionNet8.39.56.78.78.714.3-9.82.56.17.5

us-gaap:DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value34-275793-6125-67194147-1636-2439-121-32134355557-138422162-30-19376204-149-159218-137-7-791-6048-118
Percentage of DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Position, us-gaap:UnderlyingAssetClass

us-gaap:DerivativeNonmonetaryNotionalAmountEnergyMeasure

us-gaap:Long, nrg:Power



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value46116138-7-8016-5-5
Percentage of DerivativeNonmonetaryNotionalAmountEnergyMeasure100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0

us-gaap:Short, nrg:NaturalGas



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value152-92352236-109-112343208
Percentage of DerivativeNonmonetaryNotionalAmountEnergyMeasure330.4-9200.0218.815.42950.01557.11400.00.01300.0

us-gaap:Short, us-gaap:Capacity



Period End2020-03-31
Value1000000.0
Percentage of DerivativeNonmonetaryNotionalAmountEnergyMeasure2.2

us-gaap:Position, us-gaap:UnderlyingAssetClass

us-gaap:DerivativeNonmonetaryNotionalAmountMass

us-gaap:Long, us-gaap:PublicUtilitiesInventoryCoal



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value76-3-295-4-5176-7
Percentage of DerivativeNonmonetaryNotionalAmountMass100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Short, nrg:Emissions



Period End2020-03-312019-12-312019-09-302017-09-30
Value1000000.01000000.01000000.0-1000000.0
Percentage of DerivativeNonmonetaryNotionalAmountMass14.316.7-33.314.3

us-gaap:DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value0.0-0.31-0.010.051.390.28-1.18-0.080.00.04-0.09-2.34-0.11-0.520.84-0.360.33
Percentage of DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare0.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value0.0-0.31-0.010.051.380.28-1.18-0.080.00.04-0.08-2.34-0.11-0.520.84-0.360.33
Percentage of DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare0.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DisposalGroupNotDiscontinuedOperationGainLossOnDisposal



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302014-12-312014-09-302014-06-302014-03-312011-09-302011-06-302010-09-302010-06-302010-03-31
Value601121400019000023
Percentage of DisposalGroupNotDiscontinuedOperationGainLossOnDisposal100.00.0100.0100.0100.0100.00.00.00.0100.00.00.00.00.0100.0

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, nrg:East



Period End2020-03-312019-03-31
Value0.01000000.0
Percentage of DisposalGroupNotDiscontinuedOperationGainLossOnDisposal0.0100.0

us-gaap:OperatingSegments, nrg:WestAndOther



Period End2020-03-312019-03-31
Value1000000.00.0
Percentage of DisposalGroupNotDiscontinuedOperationGainLossOnDisposal16.70.0

us-gaap:OperatingSegments, us-gaap:Corporate



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value5010115
Percentage of DisposalGroupNotDiscontinuedOperationGainLossOnDisposal83.30.0100.00.050.0107.1

us-gaap:DividendsCommonStockCash



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value758889910
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value758889910
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument

us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisChangeInUnrealizedGainLoss

us-gaap:FairValueInputsLevel3, us-gaap:Derivative



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value-9444-19-121-320312-1322-15-2-411
Percentage of FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisChangeInUnrealizedGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument

us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings

us-gaap:FairValueInputsLevel3, us-gaap:Derivative



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value2219-18-17-10-60-21225-28406-2-523
Percentage of FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument

us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationPurchases

us-gaap:FairValueInputsLevel3, us-gaap:Derivative



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value8-6638-10-2-5012-4123-95427-2522
Percentage of FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationPurchases100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument

us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationTransfersIntoLevel3

us-gaap:FairValueInputsLevel3, us-gaap:Derivative



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value8-2-126113179-201193410-63-8-12-13-20
Percentage of FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationTransfersIntoLevel3100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument

us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationTransfersOutOfLevel3

us-gaap:FairValueInputsLevel3, us-gaap:Derivative



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value36-24-14272-25-30-63-101-35
Percentage of FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationTransfersOutOfLevel3100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0

us-gaap:GainLossOnDispositionOfAssets1



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-31
Value143212-31914142-130202267-75320014
Percentage of GainLossOnDispositionOfAssets1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.00.00.0100.0

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value8-52230270-811-6
Percentage of GainLossOnDispositionOfAssets157.1-166.7104.8150.0-0.0142.10.0-57.1550.046.2

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value12-1-10-71414-111
Percentage of GainLossOnDispositionOfAssets17.166.7-4.8-50.0-0.0-36.8100.0100.0-50.0-84.6

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value5600-3-10000
Percentage of GainLossOnDispositionOfAssets135.7200.00.00.0100.0-5.30.00.00.0-0.0

us-gaap:GainLossOnSaleOfOtherAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312010-03-312009-12-312009-03-31
Value650111914142300229266-8332-70014-1500193000-2119-1
Percentage of GainLossOnSaleOfOtherAssets100.0100.00.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.00.00.0100.0100.00.00.00.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0000127003-6
Percentage of GainLossOnSaleOfOtherAssets0.00.00.00.0100.0142.10.00.0150.0-20.0

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value1-1010-71414-111
Percentage of GainLossOnSaleOfOtherAssets16.7-20.00.0100.00.0-36.8100.0100.0-50.036.7

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value56000-10000
Percentage of GainLossOnSaleOfOtherAssets83.3120.00.00.00.0-5.30.00.00.00.0

us-gaap:ImpairmentOfInvestments



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-302015-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value1811070-115610131148100
Percentage of ImpairmentOfInvestments100.0100.0100.00.0100.0100.0100.0100.00.0100.0100.0100.0100.00.00.0

us-gaap:ConsolidatedEntities

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302018-12-312018-09-30
Value180101-11
Percentage of ImpairmentOfInvestments100.00.094.4100.0100.0

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302018-12-312018-09-30
Value01600
Percentage of ImpairmentOfInvestments0.0100.05.6-0.00.0

us-gaap:IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value0-78-21338880-354-25013-27-741-34-164265-113104
Percentage of IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity0.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeLossFromEquityMethodInvestments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-12-312009-09-302009-03-31
Value-11-6290-21-172018-2227-3514164-77248-3-118147-58341481612-21611148622
Percentage of IncomeLossFromEquityMethodInvestments100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-11-6290-21-172052710
Percentage of IncomeLossFromEquityMethodInvestments100.0100.0100.00.0100.0100.0100.027.8-100.0350.037.0

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value0.00.00.00.00.00.00.00.0-1000000.0-1000000.0-1000000.0
Percentage of IncomeLossFromEquityMethodInvestments-0.0-0.00.00.0-0.0-0.00.00.050.0-50.0-3.7

us-gaap:ConsolidationItems

us-gaap:IntersegmentElimination



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value00028-280-2-16-7-13-10-5-434-1-37
Percentage of IncomeLossFromEquityMethodInvestments-0.0-0.00.00.0133.3-0.0-10.0-88.9350.0-650.0-37.0166.7-80.0242.9-6.2-925.0

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, nrg:WestAndOther



Period End2020-03-312019-03-31
Value-11-18
Percentage of IncomeLossFromEquityMethodInvestments100.085.7

us-gaap:OperatingSegments, stpr:TX



Period End2020-03-312019-03-31
Value0-3
Percentage of IncomeLossFromEquityMethodInvestments-0.014.3

us-gaap:OperatingSegments, us-gaap:Corporate



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value000-2727020-1-10332527
Percentage of IncomeLossFromEquityMethodInvestments-0.0-0.00.00.0-128.6-0.010.00.050.0-50.00.0-100.060.014.331.2675.0

us-gaap:IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-312009-12-312009-03-31
Value-16-1927-1-21-3617-15-12-312-18-8-10-12-15-17-912-8-32-177-41200-9-5-74-22
Percentage of IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-03-31
Value310
Percentage of IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions-18.8-47.6

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-03-31
Value-16-21
Percentage of IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions100.0100.0

srt:ParentCompany



Period End2020-03-312019-03-31
Value262299
Percentage of IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions-1637.5-1423.8

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-03-31
Value-265-309
Percentage of IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions1656.21471.4

us-gaap:IncreaseDecreaseInDerivativeAssetsAndLiabilities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-31
Value462-58715-54-194-36247196-1818-2550-107-2550-55675-261287-10-525-317187-130
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:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value46-10-38-129-63-116-49203203
Percentage of IncreaseDecreaseInDerivativeAssetsAndLiabilities100.0-500.065.5-14.3193.3116.759.8136.182.2103.6

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value012-2037-525-21-17-2-7
Percentage of IncreaseDecreaseInDerivativeAssetsAndLiabilities0.0600.034.5528.6-33.3-46.310.847.2-0.8-3.6

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value000-29-9-15-625-1516
Percentage of IncreaseDecreaseInDerivativeAssetsAndLiabilities0.00.0-0.0-414.3-60.027.83.1-69.4-6.18.2

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value00000-115-1717-6
Percentage of IncreaseDecreaseInDerivativeAssetsAndLiabilities0.00.0-0.00.00.01.9-7.747.26.9-3.1

us-gaap:IncreaseDecreaseInIncomeTaxes



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-31
Value19-33502-3-211-107-3651871-722826-25139826-15-83-79439-403-111-212-129-109
Percentage of IncreaseDecreaseInIncomeTaxes100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-14-52500029122108113-300
Percentage of IncreaseDecreaseInIncomeTaxes-73.715.70.0-0.0-0.0263.6-1220.01542.9-3766.7-461.5

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value11-1672-41-658-7629-2
Percentage of IncreaseDecreaseInIncomeTaxes57.95.0100.0133.3-50.0-54.5-580.0-1085.7-966.7-3.1

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value22-265801-3-12-184-33-143316
Percentage of IncreaseDecreaseInIncomeTaxes115.879.30.0-33.3150.0-109.11840.0-471.44766.7486.2

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-03-312015-12-312015-09-302014-12-312014-09-302014-06-302013-09-302013-06-302012-09-302012-06-302011-09-302011-06-302010-09-302010-06-302009-09-30
Value1022200440500-11001050440101112
Percentage of IncrementalCommonSharesAttributableToShareBasedPaymentArrangements100.00.0100.0100.0100.00.00.0100.0100.00.0100.00.00.0100.0100.00.00.0100.00.0100.00.0100.0100.00.0100.00.0100.0100.0100.0100.0

us-gaap:NetCashProvidedByUsedInDiscontinuedOperations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value00004996240000-166-149-194544
Percentage of NetCashProvidedByUsedInDiscontinuedOperations0.00.00.00.0100.0100.0100.00.00.00.00.0100.0100.0100.0100.0

us-gaap:NetCashProvidedByUsedInFinancingActivitiesContinuingOperations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value293-386-42-972-791-928-1492472-49-54441263-21-349-79
Percentage of NetCashProvidedByUsedInFinancingActivitiesContinuingOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NetCashProvidedByUsedInInvestingActivitiesContinuingOperations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value-68-58-489-931198-1241790-714-432-301-220-243-249-508-171
Percentage of NetCashProvidedByUsedInInvestingActivitiesContinuingOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NetCashProvidedByUsedInOperatingActivitiesContinuingOperations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value208552472516-135245234167357581732194-82533794
Percentage of NetCashProvidedByUsedInOperatingActivitiesContinuingOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value121372201482-48104249
Percentage of NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value121372201482-7272279
Percentage of NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest100.0100.0100.0100.0150.069.2112.0

us-gaap:OperatingLeaseLeaseIncome



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value555554655
Percentage of OperatingLeaseLeaseIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-30
Value-15-34-59-3-2-3611111992411761-8-2215-1821-17-173-7-55-111814-51-88-3-104-58
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-1328-45-11-11-2-4-2-7463
Percentage of OtherComprehensiveIncomeLossNetOfTax86.7-82.476.333.3-50.030.6-200.0-400.0-18.2-389.5700.0

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-153-4-11-38014-5269
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0-8.86.833.3-50.08.3800.00.0127.3-273.7766.7

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-15-34-59-3-2-36-151111410
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0-1500.0100.0100.073.7111.1

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value28-31492-214104-12132-133
Percentage of OtherComprehensiveIncomeLossNetOfTax-186.791.2-83.1-66.7100.0-38.91000.0400.0-109.1694.7-1477.8

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
Value031413332111-201-27029-310-1-1-31-71383-10-20-20-500000
Percentage of OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.00.00.00.00.00.0

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-2-234000900023-10
Percentage of OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax0.0-74.297.60.00.028.10.00.00.0-115.0-1000.0

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value0000000009-10
Percentage of OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax0.00.00.00.00.00.00.00.00.0-45.0-1000.0

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value031413332111-161
Percentage of OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax0.0100.0100.0100.0100.0100.0100.0100.0100.080.0100.0

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value223-4000-9000-3720
Percentage of OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax0.074.2-97.60.00.0-28.10.00.00.0185.02000.0

us-gaap:PaymentsForProceedsFromOtherInvestingActivities



Period End2020-03-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-312009-12-312009-03-31
Value01600010-40-18-4-12-28-42-4-5041-155676-31-7155-10
Percentage of PaymentsForProceedsFromOtherInvestingActivities0.0100.0100.00.00.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:PaymentsForRepurchaseOfPreferredStockAndPreferenceStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value1791542472927472505004079300000
Percentage of PaymentsForRepurchaseOfPreferredStockAndPreferenceStock100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.00.0

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value17915424729274725050040793
Percentage of PaymentsForRepurchaseOfPreferredStockAndPreferenceStock100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsOfDividendsPreferredStockAndPreferenceStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-312009-12-312009-03-31
Value74888899910109109109948495051515649504131222614
Percentage of PaymentsOfDividendsPreferredStockAndPreferenceStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value7488889991010
Percentage of PaymentsOfDividendsPreferredStockAndPreferenceStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireAvailableForSaleSecuritiesDebt



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value1211218687122123103130216110
Percentage of PaymentsToAcquireAvailableForSaleSecuritiesDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1211218687122123103130216
Percentage of PaymentsToAcquireAvailableForSaleSecuritiesDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-09-302012-03-312009-12-31
Value0732751634-7522262520133191111601291104101515992181840071
Percentage of PaymentsToAcquireBusinessesNetOfCashAcquired0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0

us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations

us-gaap:ProceedsFromDivestitureOfBusinesses

us-gaap:DisposalGroupHeldForSaleOrDisposedOfBySaleNotDiscontinuedOperations, nrg:Other



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value704810165-411
Percentage of ProceedsFromDivestitureOfBusinesses100.00.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromIssuanceOfCommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-312009-12-312009-03-31
Value001026447-2010000016753101210
Percentage of ProceedsFromIssuanceOfCommonStock0.00.0100.00.0100.0100.0100.0100.0100.0100.00.0100.00.00.00.00.00.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.00.0

us-gaap:ProceedsFromIssuanceOfDebt



Period End2020-03-312019-09-302019-06-302019-03-312018-09-30
Value59215183301
Percentage of ProceedsFromIssuanceOfDebt100.0100.0100.00.0100.0

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312018-09-30
Value591
Percentage of ProceedsFromIssuanceOfDebt100.0100.0

us-gaap:ProceedsFromLinesOfCredit



Period End2020-03-312019-03-312017-03-312016-03-31
Value55201250
Percentage of ProceedsFromLinesOfCredit100.00.0100.00.0

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-31
Value0.0
Percentage of ProceedsFromLinesOfCredit0.0

srt:NonGuarantorSubsidiaries



Period End2020-03-31
Value0.0
Percentage of ProceedsFromLinesOfCredit0.0

srt:ParentCompany



Period End2020-03-31
Value552
Percentage of ProceedsFromLinesOfCredit100.0

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-31
Value0.0
Percentage of ProceedsFromLinesOfCredit0.0

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities



Period End2020-03-312019-12-312019-03-312018-12-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312011-03-31
Value-3-400000-10-300-100-2200-180
Percentage of ProceedsFromPaymentsForOtherFinancingActivities100.0100.00.00.00.00.00.0100.0100.00.00.0100.00.0100.00.00.0100.00.0

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312018-12-312017-12-31
Value-300
Percentage of ProceedsFromPaymentsForOtherFinancingActivities100.00.00.0

us-gaap:ProceedsFromPaymentsToMinorityShareholders



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value-2-100-11-239112110305119-5-29-106
Percentage of ProceedsFromPaymentsToMinorityShareholders100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-2-100-11-3-4-10-12
Percentage of ProceedsFromPaymentsToMinorityShareholders100.0100.00.00.0100.0100.01.3-3.6-9.1-40.0

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value112110807811311595121182119
Percentage of ProceedsFromSaleOfAvailableForSaleSecuritiesDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value112110807811311595121182119
Percentage of ProceedsFromSaleOfAvailableForSaleSecuritiesDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleOfOtherProductiveAssets



Period End2020-03-312019-03-31
Value151313
Percentage of ProceedsFromSaleOfOtherProductiveAssets100.0100.0

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-03-31
Value101
Percentage of ProceedsFromSaleOfOtherProductiveAssets66.70.1

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-03-31
Value0404
Percentage of ProceedsFromSaleOfOtherProductiveAssets0.030.8

srt:ParentCompany



Period End2020-03-312019-03-31
Value5908
Percentage of ProceedsFromSaleOfOtherProductiveAssets33.369.2

us-gaap:ProvisionForDoubtfulAccounts



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-312009-12-312009-03-31
Value24835262628261615113999121610101520141515199219789240
Percentage of ProvisionForDoubtfulAccounts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value2463019232425151514
Percentage of ProvisionForDoubtfulAccounts100.075.085.773.188.585.796.293.8100.0127.3

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0671342000
Percentage of ProvisionForDoubtfulAccounts0.075.020.03.811.514.37.70.00.00.0

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0-4-2600000-3
Percentage of ProvisionForDoubtfulAccounts0.0-50.0-5.723.10.00.00.00.00.0-27.3

us-gaap:RepaymentsOfOtherDebt



Period End2020-03-312019-03-31
Value6037
Percentage of RepaymentsOfOtherDebt100.0100.0

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-03-31
Value590
Percentage of RepaymentsOfOtherDebt98.30.0

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-03-31
Value133
Percentage of RepaymentsOfOtherDebt1.789.2

srt:ParentCompany



Period End2020-03-312019-03-31
Value04
Percentage of RepaymentsOfOtherDebt0.010.8

us-gaap:RestructuringCosts



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value37121320272320261200
Percentage of RestructuringCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-30
Value00000122
Percentage of RestructuringCosts0.00.00.00.00.04.310.016.7

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-30
Value0000000-7
Percentage of RestructuringCosts0.00.00.00.00.00.00.0-58.3

srt:ParentCompany



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-30
Value3121327221817
Percentage of RestructuringCosts100.0100.0100.0100.0100.095.790.0141.7

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, us-gaap:Corporate



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-30
Value200111816134
Percentage of RestructuringCosts66.70.00.084.666.769.665.033.3

us-gaap:RevenueFromRelatedParties



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value151211912-40212823
Percentage of RevenueFromRelatedParties100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RelatedPartyTransactionsByRelatedParty

nrg:GladstonePowerStation



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value112111111
Percentage of RevenueFromRelatedParties6.78.318.211.18.3-2.54.83.64.3

nrg:Ivanpah



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value137710850
Percentage of RevenueFromRelatedParties86.763.677.883.338.117.90.0

nrg:MidwaySunsetCogenerationCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value112115000
Percentage of RevenueFromRelatedParties6.78.318.211.18.3-12.50.00.00.0

us-gaap:AwardType, us-gaap:StatementEquityComponents, us-gaap:SubsequentEventType

us-gaap:StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans

us-gaap:EmployeeStock, us-gaap:CommonStock, us-gaap:SubsequentEvent



Period End2020-05-07
Value0.0
Percentage of StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans0.0

us-gaap:EmployeeStock, us-gaap:TreasuryStock, us-gaap:SubsequentEvent



Period End2020-05-07
Value63455.0
Percentage of StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans0.0

us-gaap:AwardType, us-gaap:SubsequentEventType

us-gaap:EmployeeStock, us-gaap:SubsequentEvent



Period End2020-05-07
Value63455.0
Percentage of StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans0.0

us-gaap:SubsequentEventType

us-gaap:SubsequentEvent



Period End2020-04-302018-01-012013-07-31
Value63455.0175862.069396.0
Percentage of StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans0.00.00.0

us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312013-03-31
Value10010010000000
Percentage of StockIssuedDuringPeriodSharesShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:CommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312013-12-312013-03-31
Value10001000100000000000
Percentage of StockIssuedDuringPeriodSharesShareBasedCompensation100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.00.0100.0

us-gaap:StatementEquityComponents, us-gaap:SubsequentEventType

us-gaap:CommonStock, us-gaap:SubsequentEvent



Period End2020-05-072019-10-312019-08-07
Value1096.03757.03827.0
Percentage of StockIssuedDuringPeriodSharesShareBasedCompensation0.00.00.0

us-gaap:SubsequentEventType

us-gaap:SubsequentEvent



Period End2020-05-072019-10-312019-08-07
Value1096.03757.03827.0
Percentage of StockIssuedDuringPeriodSharesShareBasedCompensation0.00.00.0

us-gaap:StockRepurchasedDuringPeriodShares



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312015-06-302015-05-312015-06-302015-04-302015-03-312015-02-282015-03-312015-01-312014-12-312013-03-31
Value4369176131132041003110
Percentage of StockRepurchasedDuringPeriodShares100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

nrg:CapitalAllocationPlan

nrg:CapitalAllocationPlan



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312018-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value54691735234635131133511431
Percentage of StockRepurchasedDuringPeriodShares115.9130.6100.0100.0100.0526678448.3100.0100.0100.00.00.0159.6341.4100.0

nrg:CapitalAllocationPlanOpenMarketRepurchases



Period End2020-03-31
Value4
Percentage of StockRepurchasedDuringPeriodShares100.0

nrg:EquivalentSharesInLieuOfTaxWithholdingOnEquityCompensationIssuances



Period End2020-03-31
Value710063.0
Percentage of StockRepurchasedDuringPeriodShares15.9

us-gaap:StatementEquityComponents

us-gaap:CommonStock



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312015-12-312013-03-31
Value0000000-240
Percentage of StockRepurchasedDuringPeriodShares0.00.00.00.00.00.00.00.0100.0

us-gaap:TreasuryStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312015-12-312013-03-31
Value436917613113-50
Percentage of StockRepurchasedDuringPeriodShares100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0

us-gaap:StatementEquityComponents, us-gaap:SubsequentEventType

us-gaap:TreasuryStock, us-gaap:SubsequentEvent



Period End2020-05-072019-10-312019-08-07
Value105
Percentage of StockRepurchasedDuringPeriodShares0.00.00.0

us-gaap:SubsequentEventType

us-gaap:SubsequentEvent



Period End2020-05-072019-10-312019-08-072015-04-30
Value1051
Percentage of StockRepurchasedDuringPeriodShares0.00.00.0100.0

us-gaap:SubsequentEventType, nrg:CapitalAllocationPlan

us-gaap:SubsequentEvent, nrg:A2019CapitalAllocationPlan



Period End2020-02-27
Value56
Percentage of StockRepurchasedDuringPeriodShares0.0

us-gaap:SubsequentEvent, nrg:CapitalAllocationPlan



Period End2020-05-072020-05-072020-02-272019-10-312019-08-07
Value1333332
Percentage of StockRepurchasedDuringPeriodShares0.00.00.00.0

us-gaap:SubsequentEvent, nrg:CapitalAllocationPlanOpenMarketRepurchases



Period End2020-02-27
Value2
Percentage of StockRepurchasedDuringPeriodShares0.0

us-gaap:SubsequentEvent, nrg:EquivalentSharesInLieuOfTaxWithholdingOnEquityCompensationIssuances



Period End2020-02-27
Value709536.0
Percentage of StockRepurchasedDuringPeriodShares0.0

nrg:CapitalAllocationPlan

us-gaap:StockRepurchasedDuringPeriodValue

nrg:CapitalAllocationPlan



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value17715623430574925050040793841671077944
Percentage of StockRepurchasedDuringPeriodValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

nrg:CapitalAllocationPlanOpenMarketRepurchases



Period End2020-03-31
Value150
Percentage of StockRepurchasedDuringPeriodValue84.7

nrg:EquivalentSharesInLieuOfTaxWithholdingOnEquityCompensationIssuances



Period End2020-03-31
Value27
Percentage of StockRepurchasedDuringPeriodValue15.3

us-gaap:SubsequentEventType, nrg:CapitalAllocationPlan

us-gaap:SubsequentEvent, nrg:CapitalAllocationPlan



Period End2020-05-072020-05-072020-02-272019-10-312019-08-07
Value4710511913051250
Percentage of StockRepurchasedDuringPeriodValue0.00.00.00.0

us-gaap:SubsequentEvent, nrg:CapitalAllocationPlanOpenMarketRepurchases



Period End2020-02-27
Value92
Percentage of StockRepurchasedDuringPeriodValue0.0

us-gaap:SubsequentEvent, nrg:EquivalentSharesInLieuOfTaxWithholdingOnEquityCompensationIssuances



Period End2020-02-27
Value27
Percentage of StockRepurchasedDuringPeriodValue0.0

nrg:CapitalAllocationPlan

us-gaap:TreasuryStockAcquiredAverageCostPerShare

nrg:CapitalAllocationPlan



Period End2020-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value34.215.0315.0624.5325.1526.95
Percentage of TreasuryStockAcquiredAverageCostPerShare100.0100.0100.0100.0100.0100.0

nrg:EquivalentSharesInLieuOfTaxWithholdingOnEquityCompensationIssuances



Period End2020-03-31
Value38.24
Percentage of TreasuryStockAcquiredAverageCostPerShare111.8

us-gaap:SubsequentEventType, nrg:CapitalAllocationPlan

us-gaap:SubsequentEvent, nrg:CapitalAllocationPlan



Period End2020-05-072020-02-27
Value-4.8237.87
Percentage of TreasuryStockAcquiredAverageCostPerShare0.00.0

us-gaap:TreasuryStockValueAcquiredCostMethod



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value15023430574950040793
Percentage of TreasuryStockValueAcquiredCostMethod100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:TreasuryStock



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value15023431573946339693
Percentage of TreasuryStockValueAcquiredCostMethod100.0100.0103.398.792.697.3100.0

us-gaap:UnrealizedGainLossOnCashFlowHedgingInstruments



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-30
Value34579331-67194-1637-22-50
Percentage of UnrealizedGainLossOnCashFlowHedgingInstruments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UnrealizedGainLossOnDerivatives



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value558-683327-48-65-66204172-2971-20-36-189-8554-113-8-27-30031980-119-253-4286-306-277148-1674965147-3562-38
Percentage of UnrealizedGainLossOnDerivatives100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems, us-gaap:ProductOrService

us-gaap:IntersegmentElimination, nrg:CapacityRevenue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.00.00.01000000.00.00.00.00.00.0
Percentage of UnrealizedGainLossOnDerivatives0.00.0-0.03.00.0-0.0-0.0-0.00.0

us-gaap:IntersegmentElimination, nrg:EnergyRevenue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-1-288-569-365-277-1117000
Percentage of UnrealizedGainLossOnDerivatives-1.8-3600.0836.8-1106.1-1025.92327.1-0.0-0.00.0

us-gaap:IntersegmentElimination, nrg:ProductsAndServicesDerivativeRevenue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-1-266-522-649-262-1037-241-264484
Percentage of UnrealizedGainLossOnDerivatives-1.8-3325.0767.6-1966.7-970.42160.4370.8400.0237.3

us-gaap:IntersegmentElimination, nrg:ProductsAndServicesOtherDerivativeRevenue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-1000000.0-1000000.00.00.00.00.00.00.00.0
Percentage of UnrealizedGainLossOnDerivatives-1.8-12.5-0.00.00.0-0.0-0.0-0.00.0

us-gaap:ConsolidationItems, us-gaap:ProductOrService, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, nrg:CapacityRevenue, nrg:East



Period End2020-03-312019-03-31
Value2418
Percentage of UnrealizedGainLossOnDerivatives43.666.7

us-gaap:OperatingSegments, nrg:EnergyRevenue, nrg:East



Period End2020-03-312019-03-31
Value3547
Percentage of UnrealizedGainLossOnDerivatives63.6174.1

us-gaap:OperatingSegments, nrg:EnergyRevenue, nrg:WestAndOther



Period End2020-03-312019-03-31
Value192
Percentage of UnrealizedGainLossOnDerivatives34.57.4

us-gaap:OperatingSegments, nrg:EnergyRevenue, stpr:TX



Period End2020-03-312019-03-31
Value0271
Percentage of UnrealizedGainLossOnDerivatives0.01003.7

us-gaap:OperatingSegments, nrg:ProductsAndServicesDerivativeRevenue, nrg:East



Period End2020-03-312019-03-31
Value3954
Percentage of UnrealizedGainLossOnDerivatives70.9200.0

us-gaap:OperatingSegments, nrg:ProductsAndServicesDerivativeRevenue, nrg:WestAndOther



Period End2020-03-312019-03-31
Value4412
Percentage of UnrealizedGainLossOnDerivatives80.044.4

us-gaap:OperatingSegments, nrg:ProductsAndServicesDerivativeRevenue, stpr:TX



Period End2020-03-312019-03-31
Value7315
Percentage of UnrealizedGainLossOnDerivatives12.71166.7

us-gaap:OperatingSegments, nrg:ProductsAndServicesOtherDerivativeRevenue, nrg:East



Period End2020-03-312019-03-31
Value04
Percentage of UnrealizedGainLossOnDerivatives0.014.8

us-gaap:OperatingSegments, nrg:ProductsAndServicesOtherDerivativeRevenue, nrg:WestAndOther



Period End2020-03-312019-03-31
Value106
Percentage of UnrealizedGainLossOnDerivatives18.222.2

us-gaap:OperatingSegments, nrg:ProductsAndServicesOtherDerivativeRevenue, stpr:TX



Period End2020-03-312019-03-31
Value713
Percentage of UnrealizedGainLossOnDerivatives12.748.1

us-gaap:DerivativeInstrumentRisk

us-gaap:CommodityContract



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-30
Value558-683327-48-65-66204172-2971-20-36-189-8554-113-8-27-30031980-119-253-4286-306-277148
Percentage of UnrealizedGainLossOnDerivatives100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestRateContract



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-30
Value000-29-9-17213481711-245459-7-115-935-14-251-3-44420-11
Percentage of UnrealizedGainLossOnDerivatives0.00.0-0.0-87.9-33.335.4-3.1-19.723.59.9-37.9-33.8-25.0-125.0-4.88.2-20.4-4.4112.5-129.64.7-7.81.22.51.6-9.54.7-0.7-0.0-7.4

us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation

us-gaap:CommodityContract, us-gaap:CostOfSales



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-30
Value4821146-220051-124-86302122-5018-134236-1054419-5-42110-191-401-79-716322-95215118261
Percentage of UnrealizedGainLossOnDerivatives87.3262.5-214.7-666.70.0-106.2190.8130.3148.070.9172.425.4670.0-655.655.6-518.816.74.4525.0-407.463.7-125.7-98.859.7-24.9-52.4-110.5-70.3-42.6176.4

us-gaap:CommodityContract, us-gaap:Sales



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-31
Value7-13-21425327-995920-98502153114-49-84-52645234-137-109159-48-316-64181-521
Percentage of UnrealizedGainLossOnDerivatives12.7-162.5314.7766.7100.0206.2-90.8-30.3-48.029.1-72.474.6-570.0136.144.4618.883.3-1.8-425.0507.436.3198.840.3124.9152.4210.5170.3

us-gaap:ProductOrService

nrg:CapacityRevenue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value242733301828453926
Percentage of UnrealizedGainLossOnDerivatives43.6337.5-48.590.966.7-58.3-69.2-59.112.7

nrg:EnergyRevenue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value53251668394336-600871580432
Percentage of UnrealizedGainLossOnDerivatives96.43137.5-982.41193.91244.41250.0-1340.0-878.8211.8

nrg:ProductsAndServicesDerivativeRevenue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value89265487677381-692975638360
Percentage of UnrealizedGainLossOnDerivatives161.83312.5-716.22051.51411.11441.7-1500.0-966.7176.5

nrg:ProductsAndServicesOtherDerivativeRevenue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value164-4127-1448
Percentage of UnrealizedGainLossOnDerivatives29.150.05.936.425.92.1-6.2-6.13.9

nrg:CounterpartyRiskByInstitution

nrg:CreditDerivativeMaximumNetExposurePercentage

nrg:FinancialInstitutions



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-31
Value0.190.160.160.160.220.890.170.240.220.140.090.110.090.330.530.510.470.440.440.480.540.380.340.4130.520.580.480.510.630.460.50.540.570.550.530.540.53
Percentage of CreditDerivativeMaximumNetExposurePercentage100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

nrg:UtilitiesEnergyMerchantsMarketersAndOther



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-31
Value0.810.840.840.840.780.110.830.760.780.860.910.890.911.00.420.290.350.360.320.310.320.320.380.310.3310.290.340.350.370.290.510.470.430.390.370.380.40.36
Percentage of CreditDerivativeMaximumNetExposurePercentage426.3525.0525.0525.0354.512.4488.2316.7354.5614.31011.1809.11011.10.0127.354.768.676.672.770.566.759.3100.091.280.155.858.672.972.546.0110.994.079.668.467.371.774.167.9

nrg:CounterpartyRiskByInvestmentGrade

nrg:ExternalCreditRatingNotRated



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-31
Value0.470.440.460.470.480.490.410.240.220.310.210.220.130.030.020.020.020.010.010.020.010.110.060.070.060.040.070.060.010.350.20.210.270.240.240.250.19
Percentage of CreditDerivativeMaximumNetExposurePercentage247.4275.0287.5293.8218.255.1241.2100.0100.0221.4233.3200.0144.49.13.83.94.32.32.34.21.928.917.616.911.56.914.611.81.676.140.038.947.443.645.346.335.8

us-gaap:ExternalCreditRatingInvestmentGrade



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-31
Value0.530.560.540.530.520.510.590.760.780.690.790.780.870.670.90.970.970.960.990.980.960.960.890.90.920.940.960.920.930.950.630.790.780.70.750.730.720.74
Percentage of CreditDerivativeMaximumNetExposurePercentage278.9350.0337.5331.2236.457.3347.1316.7354.5492.9877.8709.1966.70.0272.7183.0190.2204.3225.0222.7200.0177.8234.2264.7222.8180.8165.5191.7182.4150.8137.0158.0144.4122.8136.4137.7133.3139.6

us-gaap:DerivativeInstrumentRisk

nrg:DerivativeAssetFairValueAmountOffsetAgainstCollateralNetOfDerivativeLiabilityFairValueAmountOffsetAgainstCollateral

us-gaap:CommodityContract



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value193133126172177148129246172114-3441-65-753070276292274279275530265228241394400440316619
Percentage of DerivativeAssetFairValueAmountOffsetAgainstCollateralNetOfDerivativeLiabilityFairValueAmountOffsetAgainstCollateral100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Range, us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, nrg:DerivativesByUnderlyingAssets

nrg:DerivativeAuctionPrice

srt:Maximum, us-gaap:CommodityContract, us-gaap:FairValueInputsLevel3, nrg:FinancialTransmissionRights



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value91.0213.060.052.034.0
Percentage of DerivativeAuctionPrice100.0100.0100.0100.0100.0

srt:Minimum, us-gaap:CommodityContract, us-gaap:FairValueInputsLevel3, nrg:FinancialTransmissionRights



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value-380.0-105.0-134.0-134.0-90.0
Percentage of DerivativeAuctionPrice-417.6-49.3-223.3-257.7-264.7

us-gaap:DerivativeInstrumentRisk

nrg:DerivativeCollateralObligationToReturnCashNetOfDerivativeCollateralRightToReclaimCash

us-gaap:CommodityContract



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value7766654887831248-816278119621398-36871584120-9-45127138-44-130-137-206-346
Percentage of DerivativeCollateralObligationToReturnCashNetOfDerivativeCollateralRightToReclaimCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Position, us-gaap:UnderlyingAssetClass

nrg:DerivativeNonmonetaryNotionalAmountOther

us-gaap:Long, nrg:RenewableEnergyCertificates



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value1000000.01000000.01000000.01000000.01000000.01000000.01000000.00.0
Percentage of DerivativeNonmonetaryNotionalAmountOther100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:DerivativeInstrumentRisk

nrg:FairValueofGrossDerivativeAssetsLiabilitiesNet

us-gaap:CommodityContract



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value1166761124906511719825352-112-78-127-88-68106189134233259284575253157203438530965
Percentage of FairValueofGrossDerivativeAssetsLiabilitiesNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

nrg:FundsDepositedByCounterparties



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-31
Value5132303111333071241373119321644101106683368723946312213410527176135199258259260317408457509177754
Percentage of FundsDepositedByCounterparties100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value5132303111333037
Percentage of FundsDepositedByCounterparties100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

nrg:NetAssetsLessNoncontrollingInterest

us-gaap:VariableInterestEntityPrimaryBeneficiary



Period End2020-03-312019-12-31
Value-545
Percentage of NetAssetsLessNoncontrollingInterest100.0100.0

nrg:NuclearDecommissioningTrustFundLiabilityNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-31
Value390487453448423371432410400415397367352339309309294283280311328333323336324324303287293273277263279254237278281272256262255218
Percentage of NuclearDecommissioningTrustFundLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value390487453448423371432415
Percentage of NuclearDecommissioningTrustFundLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0

nrg:PowerGenerationCapacityMegawatts



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value000000000030000000000000
Percentage of PowerGenerationCapacityMegawatts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccountsReceivableNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value915102513781062898102212971371903
Percentage of AccountsReceivableNet100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType

srt:AffiliatedEntity



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value454465
Percentage of AccountsReceivableNet0.40.50.30.40.70.5

us-gaap:CustomerContracts



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value885100213111015870100212651187784
Percentage of AccountsReceivableNet96.797.895.195.696.998.097.586.686.8

us-gaap:Derivative



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value261863432220323238
Percentage of AccountsReceivableNet2.81.84.64.02.42.02.52.34.2

us-gaap:AdditionalPaidInCapitalCommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-31
Value849885018494848884738510845384818379837683698383837583588370830682998296838283658362832783148303784278407843761576027587538853835374534653485339533053235316527449484350
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivable



Period End2020-03-312019-12-31
Value3943
Percentage of AllowanceForDoubtfulAccountsReceivable100.0100.0

us-gaap:AssetsFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value204019931881207217231792
Percentage of AssetsFairValueDisclosure100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel1



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value497558536580466517
Percentage of AssetsFairValueDisclosure24.428.028.528.027.028.9

us-gaap:FairValueInputsLevel2



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value128511561138101610451075
Percentage of AssetsFairValueDisclosure63.058.060.549.060.760.0

us-gaap:FairValueInputsLevel3



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value192193128394133128
Percentage of AssetsFairValueDisclosure9.49.76.819.07.77.1

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value248338310303283234298276
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancialInstrument

us-gaap:CommercialMortgageBackedSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value1000000.01000000.01000000.01000000.01000000.00.00.00.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax0.40.30.30.30.40.00.00.0

us-gaap:CorporateDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value56653112
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax2.01.81.91.71.10.40.30.7

us-gaap:EquitySecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value228324295291276231296272
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax91.995.995.296.097.598.799.398.6

us-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprises



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value43321101
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax1.60.91.00.70.40.40.00.4

us-gaap:USGovernmentSponsoredEnterprisesDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value104542111
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax4.01.21.61.30.70.40.30.4

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value61112672
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancialInstrument

us-gaap:CommercialMortgageBackedSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value1000000.01000000.01000000.01000000.00.01000000.01000000.00.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax16.7100.0100.0100.00.016.714.30.0

us-gaap:CorporateDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value40001221
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax66.70.00.00.050.033.328.650.0

us-gaap:EquitySecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value1000000.00.00.00.00.01000000.00.00.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax16.70.00.00.00.016.70.00.0

us-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprises



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value00001231
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax0.00.00.00.050.033.342.950.0

us-gaap:USGovernmentSponsoredEnterprisesDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value0.00.00.00.00.00.01000000.00.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax0.00.00.00.00.00.014.30.0

us-gaap:AvailableForSaleSecuritiesDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value132024383739
Percentage of AvailableForSaleSecuritiesDebtSecurities100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel1



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value000012
Percentage of AvailableForSaleSecuritiesDebtSecurities0.00.00.00.02.75.1

us-gaap:FairValueInputsLevel2



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value132019191818
Percentage of AvailableForSaleSecuritiesDebtSecurities100.0100.079.250.048.646.2

us-gaap:FairValueInputsLevel3



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value005191819
Percentage of AvailableForSaleSecuritiesDebtSecurities0.00.020.850.048.648.7

us-gaap:CapitalizedContractCostNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value133133130123117111
Percentage of CapitalizedContractCostNet100.0100.0100.0100.0100.0100.0

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312014-12-31
Value818385277336885613141713371412153617911240102713861703116213221671
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-312015-12-31
Value5837323923951651012714123345
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations7.19.611.611.62.615.511.67.619.22.71.30.23.4

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-312015-12-31
Value19212729303819262396399455534288
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations2.35.59.78.63.46.21.319.628.026.025.438.521.8

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-312015-12-31
Value7413272182688324801233514349643893323709
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations90.684.978.779.894.078.387.038.424.741.949.923.353.6

us-gaap:CreditDerivativesByContractType

us-gaap:CollateralAlreadyPostedAggregateFairValue

nrg:AdequateAssuranceClauses



Period 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
Value121439191716253120252736
Percentage of CollateralAlreadyPostedAggregateFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

nrg:CreditRatingContingentFeatures



Period 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
Value252418132314173573439
Percentage of CollateralAlreadyPostedAggregateFairValue208.3171.446.268.4135.387.568.09.725.028.0125.9108.3

us-gaap:ContractWithCustomerLiability



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value878278898067
Percentage of ContractWithCustomerLiability100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrumentUnamortizedDiscountPremiumNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value828689919810110512325-30353974821402343001560
Percentage of DebtInstrumentUnamortizedDiscountPremiumNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument

us-gaap:DecommissioningFundInvestments

us-gaap:FairValueInputsLevel1, us-gaap:CashAndCashEquivalents



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value211720251519
Percentage of DecommissioningFundInvestments100.0100.0100.0100.0100.0100.0

us-gaap:FairValueInputsLevel1, us-gaap:EquitySecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value308388372366354312
Percentage of DecommissioningFundInvestments1466.72282.41860.01464.02360.01642.1

us-gaap:FairValueInputsLevel1, us-gaap:USGovernmentSponsoredEnterprisesDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value566851575046
Percentage of DecommissioningFundInvestments266.7400.0255.0228.0333.3242.1

us-gaap:FairValueInputsLevel2, us-gaap:CommercialMortgageBackedSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value332927292922
Percentage of DecommissioningFundInvestments157.1170.6135.0116.0193.3115.8

us-gaap:FairValueInputsLevel2, us-gaap:CorporateDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value12510911210210096
Percentage of DecommissioningFundInvestments595.2641.2560.0408.0666.7505.3

us-gaap:FairValueInputsLevel2, us-gaap:ForeignGovernmentDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value555444
Percentage of DecommissioningFundInvestments23.829.425.016.026.721.1

us-gaap:FairValueInputsLevel2, us-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprises



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value93100979296100
Percentage of DecommissioningFundInvestments442.9588.2485.0368.0640.0526.3

us-gaap:FairValueInputsLevel2, us-gaap:USGovernmentSponsoredEnterprisesDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1000000.00.00.00.00.00.0
Percentage of DecommissioningFundInvestments4.80.00.00.00.00.0

us-gaap:FinancialInstrument

us-gaap:CashAndCashEquivalents



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value211720251519
Percentage of DecommissioningFundInvestments100.0100.0100.0100.0100.0100.0

us-gaap:CommercialMortgageBackedSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value332927292922
Percentage of DecommissioningFundInvestments157.1170.6135.0116.0193.3115.8

us-gaap:CorporateDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value12510911210210096
Percentage of DecommissioningFundInvestments595.2641.2560.0408.0666.7505.3

us-gaap:EquitySecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value308388372366354312
Percentage of DecommissioningFundInvestments1466.72282.41860.01464.02360.01642.1

us-gaap:ForeignGovernmentDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value555444
Percentage of DecommissioningFundInvestments23.829.425.016.026.721.1

us-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprises



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value93100979296100
Percentage of DecommissioningFundInvestments442.9588.2485.0368.0640.0526.3

us-gaap:USGovernmentSponsoredEnterprisesDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value576851575046
Percentage of DecommissioningFundInvestments271.4400.0255.0228.0333.3242.1

us-gaap:DecommissioningLiabilityNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-31
Value303298294290286282278274272269265262291287284334330326322318314310306302298294290287359354349345340335331326322317313304300284
Percentage of DecommissioningLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value303298294290286282278269
Percentage of DecommissioningLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DecommissioningTrustAssetsAmount



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value702794756748718663719694680692670637627610605599577561551576586585569576557551524503501473469448456424399433428412367
Percentage of DecommissioningTrustAssetsAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value702794756748718663719692
Percentage of DecommissioningTrustAssetsAmount100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancialInstrument

us-gaap:CashAndCashEquivalents



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value2117202515192147
Percentage of DecommissioningTrustAssetsAmount3.02.12.63.32.12.92.96.8

us-gaap:CommercialMortgageBackedSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value3329272929221914
Percentage of DecommissioningTrustAssetsAmount4.73.73.63.94.03.32.62.0

us-gaap:CorporateDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value1251091121021009611299
Percentage of DecommissioningTrustAssetsAmount17.813.714.813.613.914.515.614.3

us-gaap:EquitySecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value368466444439424376434402
Percentage of DecommissioningTrustAssetsAmount52.458.758.758.759.156.760.458.1

us-gaap:ForeignGovernmentDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value55544445
Percentage of DecommissioningTrustAssetsAmount0.70.60.70.50.60.60.60.7

us-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprises



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value931009792961008882
Percentage of DecommissioningTrustAssetsAmount13.212.612.812.313.415.112.211.8

us-gaap:USGovernmentSponsoredEnterprisesDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value5768515750464143
Percentage of DecommissioningTrustAssetsAmount8.18.66.77.67.06.95.76.2

us-gaap:DeferredFinanceCostsNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value63656871697082199201204198208-191-188-183-160-164-172-199
Percentage of DeferredFinanceCostsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxAssetsNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312017-09-302016-12-31
Value3265328653554546134205225
Percentage of DeferredIncomeTaxAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value4354210066377
Percentage of DeferredIncomeTaxAssetsNet13.312.80.00.013.313.0281.3

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value-32-195356-145-143-135
Percentage of DeferredIncomeTaxAssetsNet-1.0-0.6100.0101.8-322.2-310.9-100.7

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value286228840-1184183-236
Percentage of DeferredIncomeTaxAssetsNet87.787.80.0-1.8408.9397.8-176.1

us-gaap:DeferredIncomeTaxLiabilitiesNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312017-09-302016-12-31
Value151770716265212120
Percentage of DeferredIncomeTaxLiabilitiesNet100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value00-10-10112112112
Percentage of DeferredIncomeTaxLiabilitiesNet0.00.0-14.3-14.1180.6172.3533.3

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value15176768606164
Percentage of DeferredIncomeTaxLiabilitiesNet100.0100.095.795.896.893.8304.8

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value001313-110-108-155
Percentage of DeferredIncomeTaxLiabilitiesNet0.00.018.618.3-177.4-166.2-738.1

us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeAssetFairValueGrossLiability

us-gaap:CommodityContract



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value1010909869102968977876581783557854673073210051027152520001616154417782092215514331706150110321151158825452024
Percentage of DerivativeAssetFairValueGrossLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeCollateralObligationToReturnCash



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value5132303111333072240373119321644100106683368723946312213410527176135199258259260408
Percentage of DerivativeCollateralObligationToReturnCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value5132303111333037
Percentage of DerivativeCollateralObligationToReturnCash100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeInstrumentRisk

us-gaap:CommodityContract



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value17751053118502011152212353991137133647234062195219225374
Percentage of DerivativeCollateralObligationToReturnCash33.321.916.732.345.593.960.069.483.829.716.110.566.750.0143.8120.599.0106.6104.4100.094.1100.0100.044.40.098.4159.8163.4214.3138.0

us-gaap:DerivativeCollateralRightToReclaimCash



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value2001901641633882872092242111712032772772033372184115683672994001873755726872762883874552299871498311316254323
Percentage of DerivativeCollateralRightToReclaimCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value197182146148367275194170
Percentage of DerivativeCollateralRightToReclaimCash98.595.889.090.894.695.892.899.4

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value3818152112151
Percentage of DerivativeCollateralRightToReclaimCash1.54.211.09.25.44.27.20.6

us-gaap:DerivativeInstrumentRisk

us-gaap:CommodityContract



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value9473705892114309812073831216414121171862711125355271575381865821928
Percentage of DerivativeCollateralRightToReclaimCash47.038.442.735.623.739.714.443.856.942.740.943.723.16.935.97.845.347.730.517.713.814.44.013.15.56.522.621.24.212.2

us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeFairValueOfDerivativeAsset

us-gaap:CommodityContract



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value1318117010931276929104210221169127774563983185812021213181825782220210222922620290218122106189416191884242633653303
Percentage of DerivativeFairValueOfDerivativeAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:CommodityContract, us-gaap:FairValueInputsLevel1



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value111849213145137
Percentage of DerivativeFairValueOfDerivativeAsset8.47.28.410.34.813.1

us-gaap:CommodityContract, us-gaap:FairValueInputsLevel2



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1015893878770769796
Percentage of DerivativeFairValueOfDerivativeAsset77.076.380.360.382.876.4

us-gaap:CommodityContract, us-gaap:FairValueInputsLevel3



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value192193123375115109
Percentage of DerivativeFairValueOfDerivativeAsset14.616.511.329.412.410.5

us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, nrg:DerivativesByUnderlyingAssets

us-gaap:CommodityContract, us-gaap:FairValueInputsLevel3, nrg:FinancialTransmissionRights



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value4242342820
Percentage of DerivativeFairValueOfDerivativeAsset3.23.63.12.21.9

us-gaap:CommodityContract, us-gaap:FairValueInputsLevel3, nrg:PowerContracts



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value1501518934789
Percentage of DerivativeFairValueOfDerivativeAsset11.412.98.127.28.5

us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation

nrg:CommodityContractCurrent, us-gaap:Nondesignated



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value884860735850596747666832100061647064067910629641470211319151580180520292425139717011573132813891853280526442676366848813898238514201572
Percentage of DerivativeFairValueOfDerivativeAsset67.173.567.266.664.271.765.271.278.382.773.677.079.188.479.580.982.086.375.278.877.483.677.180.883.182.073.776.483.480.00.00.00.00.00.00.00.0

nrg:CommodityContractNonCurrent, us-gaap:Nondesignated



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value434310358426333295356337277129169191179140249348465305522487591477415405321291495573560659309562649450470470541
Percentage of DerivativeFairValueOfDerivativeAsset32.926.532.833.435.828.334.828.821.717.326.423.020.911.620.519.118.013.724.821.222.616.422.919.216.918.026.323.616.620.00.00.00.00.00.00.00.0

us-gaap:HedgingDesignation

us-gaap:Nondesignated



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value13181170109312769581081107512511347786671861896123912191818257822202102229226202903181621071898162518872434336533032985423055304348285518902113
Percentage of DerivativeFairValueOfDerivativeAsset100.0100.0100.0100.0103.1103.7105.2107.0105.5105.5105.0103.6104.4103.1100.5100.0100.0100.0100.0100.0100.0100.0100.2100.0100.2100.4100.2100.3100.0100.00.00.00.00.00.00.00.0

us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral

us-gaap:CommodityContract



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value2912542192372352332393022411568899124196163240479491487481464675376396393525538619595905
Percentage of DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeFairValueOfDerivativeLiability



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302009-12-31
Value1202110310321152839977994105475282910041062137814441912257422142035216025342492169120901761125014361932297024813023395455324215249716521746205025721860
Percentage of DerivativeFairValueOfDerivativeLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeInstrumentRisk

us-gaap:CommodityContract



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value1202110310321152839977905971102469375190998512901281171223892086186920332336232715591949169111811354184928432338
Percentage of DerivativeFairValueOfDerivativeLiability100.0100.0100.0100.0100.0100.00.097.797.292.290.690.592.793.688.789.592.894.291.894.192.293.492.293.396.094.594.395.795.794.2

us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:CommodityContract, us-gaap:FairValueInputsLevel1



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value193143151245107224
Percentage of DerivativeFairValueOfDerivativeLiability16.113.014.621.312.822.9

us-gaap:CommodityContract, us-gaap:FairValueInputsLevel2



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value890805771629615664
Percentage of DerivativeFairValueOfDerivativeLiability74.073.074.754.673.368.0

us-gaap:CommodityContract, us-gaap:FairValueInputsLevel3



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value11915511027811789
Percentage of DerivativeFairValueOfDerivativeLiability9.914.110.724.113.99.1

us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, nrg:DerivativesByUnderlyingAssets

us-gaap:CommodityContract, us-gaap:FairValueInputsLevel3, nrg:FinancialTransmissionRights



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value1216121714
Percentage of DerivativeFairValueOfDerivativeLiability1.01.51.21.51.4

us-gaap:CommodityContract, us-gaap:FairValueInputsLevel3, nrg:PowerContracts



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value1071399826175
Percentage of DerivativeFairValueOfDerivativeLiability8.912.69.522.77.7

us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation

nrg:CommodityContractCurrent, us-gaap:Nondesignated



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value83278166877848967355070278153549568171710499301325190116741365158318241991130616721467101510301474245519422436320147833712208913171666
Percentage of DerivativeFairValueOfDerivativeLiability69.270.864.767.558.368.90.070.674.171.159.767.867.576.164.469.373.975.667.173.372.079.977.280.083.381.271.776.382.778.380.681.086.588.183.779.781.3

nrg:CommodityContractNonCurrent, us-gaap:Nondesignated



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value370322364374350304355269243158256228268241351387488412504450512336253277224164321369382392450610649394326259294
Percentage of DerivativeFairValueOfDerivativeLiability30.829.235.332.541.731.10.027.123.121.030.922.725.217.524.320.219.018.624.820.820.213.515.013.312.713.122.419.112.915.814.915.411.79.313.115.714.3

us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel1



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value193143151245107224
Percentage of DerivativeFairValueOfDerivativeLiability16.113.014.621.312.822.9

us-gaap:FairValueInputsLevel2



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value890805771629615664
Percentage of DerivativeFairValueOfDerivativeLiability74.073.074.754.673.368.0

us-gaap:FairValueInputsLevel3



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value11915511027811789
Percentage of DerivativeFairValueOfDerivativeLiability9.914.110.724.113.99.1

us-gaap:HedgingDesignation

us-gaap:Nondesignated



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value120211031032115283997790798710457368069761009130913141749241821041892204923862363157219571698118413591850285023522913384554584107241615761960
Percentage of DerivativeFairValueOfDerivativeLiability100.0100.0100.0100.0100.0100.00.099.399.197.997.297.295.095.091.091.593.995.093.094.994.294.893.093.696.494.794.695.896.094.896.497.298.797.496.895.495.6

us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral

us-gaap:CommodityContract



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value981219365588511056694212258189271133170203199213202189145111168152131138179279286
Percentage of DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Range, us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, nrg:DerivativesByUnderlyingAssets

us-gaap:DerivativeForwardPrice

srt:Maximum, us-gaap:CommodityContract, us-gaap:FairValueInputsLevel3, nrg:PowerContracts



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value165.0218.0217.0142.0214.0
Percentage of DerivativeForwardPrice100.0100.0100.0100.0100.0

srt:Minimum, us-gaap:CommodityContract, us-gaap:FairValueInputsLevel3, nrg:PowerContracts



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value6.08.06.04.01.0
Percentage of DerivativeForwardPrice3.63.72.82.80.5

srt:WeightedAverage, us-gaap:CommodityContract, us-gaap:FairValueInputsLevel3, nrg:PowerContracts



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value25.024.022.025.031.0
Percentage of DerivativeForwardPrice15.211.010.117.614.5

us-gaap:DerivativeInstrumentsAndHedges



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302009-12-31
Value884860735850611764683851101562647564468210629641470211319151580180520292425139717011573132813891853280526442677367051504216258817491774196424791636
Percentage of DerivativeInstrumentsAndHedges100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value882856740867610779687646
Percentage of DerivativeInstrumentsAndHedges99.899.5100.7102.099.8102.0100.6103.2

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value3545285421502426
Percentage of DerivativeInstrumentsAndHedges4.05.23.86.43.46.53.54.2

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value00001516179
Percentage of DerivativeInstrumentsAndHedges0.00.00.00.02.52.12.51.4

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value-33-41-33-71-35-81-45-57
Percentage of DerivativeInstrumentsAndHedges-3.7-4.8-4.5-8.4-5.7-10.6-6.6-9.1

us-gaap:DerivativeInstrumentsAndHedgesNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302009-12-31
Value4343103584263473173924263541722062262261892563484653055224915914804274133333115065875626623095626494505335866747581001683
Percentage of DerivativeInstrumentsAndHedgesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value434308356420334296357126
Percentage of DerivativeInstrumentsAndHedgesNoncurrent100.099.499.498.696.393.491.173.3

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value131514228492
Percentage of DerivativeInstrumentsAndHedgesNoncurrent3.04.83.95.22.31.32.31.2

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value000014223631
Percentage of DerivativeInstrumentsAndHedgesNoncurrent0.00.00.00.04.06.99.218.0

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value-13-13-12-16-9-5-100
Percentage of DerivativeInstrumentsAndHedgesNoncurrent-3.0-4.2-3.4-3.8-2.6-1.6-2.60.0

us-gaap:DerivativeLiabilitiesCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value832781668778489673550709790555522711747108496913731947172114161638188420541365173615041055106415122493198124623234482437511685
Percentage of DerivativeLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value852797683817505713565556
Percentage of DerivativeLiabilitiesCurrent102.4102.0102.2105.0103.3105.9102.7100.2

srt:NonGuarantorSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value1325183219413038
Percentage of DerivativeLiabilitiesCurrent1.63.22.74.13.96.15.56.8

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value-33-41-33-71-35-81-45-57
Percentage of DerivativeLiabilitiesCurrent-4.0-5.2-4.9-9.1-7.2-12.0-8.2-10.3

us-gaap:DerivativeLiabilitiesNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value370322364374350304357285264197307293315294475539627493619522650438326354257195372420477500561720708464365
Percentage of DerivativeLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries