DOW


Line plots across dimensions of each concept
Tables

Table of contents



us-gaap:CommonStockValue
dei:LegalEntity
us-gaap:CommonStockParOrStatedValuePerShare

us-gaap:CommonStockSharesIssued

us-gaap:CommonStockSharesAuthorized

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:IncomeLossFromContinuingOperationsPerBasicShare

us-gaap:IncomeLossFromContinuingOperationsPerDilutedShare

us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax
dei:LegalEntity
us-gaap:StatementBusinessSegments

us-gaap:Revenues
dow:BusinessGroup, us-gaap:StatementBusinessSegments
us-gaap:StatementBusinessSegments
us-gaap:StatementGeographical

us-gaap:CostOfGoodsAndServicesSold
dei:LegalEntity

us-gaap:SellingGeneralAndAdministrativeExpense
dei:LegalEntity

us-gaap:InterestExpenseDebt
dei:LegalEntity

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax
dei:LegalEntity

us-gaap:IncomeLossFromContinuingOperations
dei:LegalEntity

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
dei:LegalEntity

us-gaap:IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity
us-gaap:StatementEquityComponents

us-gaap:NonoperatingIncomeExpense
dei:LegalEntity

us-gaap:IncomeTaxExpenseBenefit
dei:LegalEntity

us-gaap:ProfitLoss
dei:LegalEntity

us-gaap:ComprehensiveIncomeNetOfTax
dei:LegalEntity

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest
dei:LegalEntity

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest
dei:LegalEntity

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

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest
dei:LegalEntity

us-gaap:Assets
dei:LegalEntity
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities
us-gaap:Liabilities

us-gaap:LiabilitiesAndStockholdersEquity
dei:LegalEntity

us-gaap:StockholdersEquity
dei:LegalEntity

us-gaap:AssetsCurrent
dei:LegalEntity

us-gaap:CashAndCashEquivalentsAtCarryingValue
dei:LegalEntity
us-gaap:ConsolidatedEntities

us-gaap:ShortTermInvestments
dei:LegalEntity

us-gaap:AccountsReceivableNetCurrent

us-gaap:InventoryNet
dei:LegalEntity

us-gaap:InventoryFinishedGoods

us-gaap:OtherAssetsCurrent
dei:LegalEntity
us-gaap:ConsolidatedEntities

us-gaap:PropertyPlantAndEquipmentGross
dei:LegalEntity
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
dei:LegalEntity
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:PropertyPlantAndEquipmentNet
dei:LegalEntity
us-gaap:ConsolidatedEntities

us-gaap:Goodwill
dei:LegalEntity
us-gaap:StatementBusinessSegments

us-gaap:IntangibleAssetsNetExcludingGoodwill
dei:LegalEntity

us-gaap:FiniteLivedIntangibleAssetsNet
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:OtherAssetsNoncurrent
dei:LegalEntity
us-gaap:ConsolidatedEntities

us-gaap:LiabilitiesCurrent
dei:LegalEntity

us-gaap:NotesPayableCurrent
dei:LegalEntity

us-gaap:AccruedIncomeTaxesCurrent
dei:LegalEntity

us-gaap:LongTermDebt
us-gaap:DebtInstrument, dei:LegalEntity

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent
dei:LegalEntity

us-gaap:MinorityInterest
dei:LegalEntity
us-gaap:StatementEquityComponents

us-gaap:OtherLiabilitiesNoncurrent
dei:LegalEntity
us-gaap:ConsolidatedEntities

us-gaap:StockholdersEquity
dei:LegalEntity

us-gaap:CommonStockValue

us-gaap:RetainedEarningsAccumulatedDeficit
dei:LegalEntity

us-gaap:TreasuryStockValue

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax
dei:LegalEntity
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInOperatingActivities
dei:LegalEntity

us-gaap:NetCashProvidedByUsedInInvestingActivities
dei:LegalEntity

us-gaap:NetCashProvidedByUsedInFinancingActivities
dei:LegalEntity

us-gaap:NetCashProvidedByUsedInOperatingActivities
dei:LegalEntity

us-gaap:NetIncomeLoss
dei:LegalEntity

us-gaap:ProfitLoss
dei:LegalEntity

us-gaap:DepreciationDepletionAndAmortization
dei:LegalEntity

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet
dei:LegalEntity

us-gaap:IncreaseDecreaseInInventories
dei:LegalEntity

us-gaap:NetCashProvidedByUsedInInvestingActivities
dei:LegalEntity

us-gaap:PaymentsToAcquireInvestments
dei:LegalEntity

us-gaap:NetCashProvidedByUsedInFinancingActivities
dei:LegalEntity

us-gaap:PaymentsOfDividends
dei:LegalEntity

us-gaap:PaymentsOfDividends
dei:LegalEntity

us-gaap:PaymentsForRepurchaseOfCommonStock
us-gaap:DebtInstrument
us-gaap:DebtInstrumentInterestRateStatedPercentage
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod

us-gaap:OperatingLeaseRightOfUseAsset
dei:LegalEntity

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
dei:LegalEntity

us-gaap:ProceedsFromRepaymentsOfShortTermDebt
dei:LegalEntity

dei:EntityListingParValuePerShare
dei:LegalEntity

dow:BusinessCombinationIntegrationAndSeparationRelatedCosts
dei:LegalEntity

dow:CashReclassifiedAsHeldForSale
dei:LegalEntity

dow:Cashreceiptrelatedtodivestiture
us-gaap:StatementOperatingActivitiesSegment
us-gaap:RetirementPlanType
dow:DefinedBenefitPlanNetPeriodicBenefitCostCreditIncludingDiscontinuedOperations

dow:DistributionsAndLoanRepaymentsFromNonconsolidatedAffiliates
dei:LegalEntity

dow:EquitySecuritiesNetUnrealizedGainLoss

dow:FinanceLeaseCost

dow:InvestmentsInAndLoansToNonconsolidatedAffiliates
dei:LegalEntity
us-gaap:StatementEquityComponents
dow:NoncontrollingInterestIncreaseDecreaseFromOtherActivity

dow:OperatingEBIT
us-gaap:StatementBusinessSegments
us-gaap:StatementEquityComponents
dow:StockIssuedDuringPeriodValueNewIssuesandTreasuryStockReissued
us-gaap:StatementEquityComponents
dow:StockIssuedDuringPeriodValueParentCompanyStockDWDP
us-gaap:StatementEquityComponents, dei:LegalEntity
us-gaap:StatementEquityComponents, dei:LegalEntity
dow:StockIssuedDuringPeriodValueParentCompanyStockDowInc

dow:TransferofBusinessUnderCommonControl
dei:LegalEntity
us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents, dei:LegalEntity
us-gaap:StatementEquityComponents
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
us-gaap:StatementEquityComponents, dei:LegalEntity

us-gaap:AmortizationOfIntangibleAssets
dei:LegalEntity
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
us-gaap:FairValueByAssetClass, us-gaap:StatementBusinessSegments
us-gaap:AssetImpairmentCharges

us-gaap:AvailableForSaleSecuritiesGrossRealizedGains

us-gaap:AvailableForSaleSecuritiesGrossRealizedLosses

us-gaap:BusinessCombinationIntegrationRelatedCosts
us-gaap:StatementBusinessSegments

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
dei:LegalEntity
us-gaap:StatementEquityComponents
us-gaap:CashDividendsPaidToParentCompany
us-gaap:StatementEquityComponents, dei:LegalEntity
us-gaap:RelatedPartyTransactionsByRelatedParty, dei:LegalEntity
us-gaap:CashDividendsPaidToParentCompanyByConsolidatedSubsidiaries

us-gaap:CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations
dei:LegalEntity

us-gaap:CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations
dei:LegalEntity

us-gaap:CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations
dei:LegalEntity

us-gaap:CommonStockDividendsPerShareDeclared

us-gaap:ContractWithCustomerAssetReclassifiedToReceivable

us-gaap:ContractWithCustomerLiabilityRevenueRecognized

us-gaap:DeferredIncomeTaxExpenseBenefit
dei:LegalEntity
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanInterestCost
us-gaap:DisposalGroupClassification, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost
us-gaap:RetirementPlanType
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanServiceCost

us-gaap:Depreciation
dei:LegalEntity

us-gaap:DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation, us-gaap:IncomeStatementLocation
us-gaap:HedgingDesignation
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation, us-gaap:IncomeStatementLocation
us-gaap:DerivativesUsedInNetInvestmentHedgeGainLossReclassifiedToEarningsNetOfTax

us-gaap:DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare

us-gaap:DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare
us-gaap:StatementEquityComponents
us-gaap:DividendsCommonStock

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
dei:LegalEntity

us-gaap:FinanceLeaseInterestExpense

us-gaap:FinanceLeasePrincipalPayments

us-gaap:FinanceLeaseRightOfUseAssetAmortization

us-gaap:GainLossOnDispositionOfAssets1
dei:LegalEntity
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation, us-gaap:IncomeStatementLocation
us-gaap:GainLossOnOilAndGasHedgingActivity
us-gaap:HedgingDesignation

us-gaap:GainsLossesOnExtinguishmentOfDebt
us-gaap:DebtInstrument, us-gaap:IncomeStatementLocation
us-gaap:StatementBusinessSegments

us-gaap:GoodwillForeignCurrencyTranslationGainLoss
us-gaap:StatementBusinessSegments

us-gaap:IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents

us-gaap:IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity
dei:LegalEntity

us-gaap:IncomeLossFromEquityMethodInvestments
dei:LegalEntity
us-gaap:StatementBusinessSegments

us-gaap:IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions
dei:LegalEntity

us-gaap:IncreaseDecreaseInAccountsAndNotesReceivable
dei:LegalEntity

us-gaap:IncreaseDecreaseInAccountsPayable
dei:LegalEntity

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:InterestIncomeOther
dei:LegalEntity

us-gaap:LeaseCost
us-gaap:LitigationCase
us-gaap:LitigationSettlementAmountAwardedFromOtherParty
us-gaap:StatementEquityComponents
us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders
us-gaap:StatementEquityComponents, us-gaap:StatementOperatingActivitiesSegment

us-gaap:NetCashProvidedByUsedInFinancingActivitiesContinuingOperations
dei:LegalEntity

us-gaap:NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
dei:LegalEntity

us-gaap:NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
dei:LegalEntity

us-gaap:NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersBasic

us-gaap:NetIncomeLossFromDiscontinuedOperationsAvailableToCommonShareholdersBasic

us-gaap:NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest
dei:LegalEntity

us-gaap:OperatingLeaseCost

us-gaap:OperatingLeasePayments
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax
dei:LegalEntity
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsTax

us-gaap:OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax
dei:LegalEntity

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

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax
dei:LegalEntity

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation, us-gaap:IncomeStatementLocation
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation, us-gaap:OtherComprehensiveIncomeLocation
us-gaap:HedgingDesignation

us-gaap:OtherNoncashIncomeExpense
dei:LegalEntity

us-gaap:OtherNonrecurringIncomeExpense
us-gaap:StatementBusinessSegments
us-gaap:RestructuringCostAndReserve, us-gaap:RestructuringPlan
us-gaap:PaymentsForRestructuring
us-gaap:RestructuringPlan

us-gaap:PaymentsOfDividendsMinorityInterest
dei:LegalEntity

us-gaap:PaymentsOfFinancingCosts
dei:LegalEntity

us-gaap:PaymentsOfOrdinaryDividends
dei:LegalEntity

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation
dei:LegalEntity

us-gaap:PaymentsToAcquireProductiveAssets
dei:LegalEntity

us-gaap:PaymentsToExploreAndDevelopOilAndGasProperties
dei:LegalEntity

us-gaap:PensionAndOtherPostretirementBenefitContributions
dei:LegalEntity

us-gaap:PensionAndOtherPostretirementBenefitExpense
dei:LegalEntity

us-gaap:ProceedsFromIssuanceOfCommonStock
dei:LegalEntity

us-gaap:ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet
dei:LegalEntity

us-gaap:ProceedsFromSaleAndMaturityOfOtherInvestments
dei:LegalEntity

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt

us-gaap:ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets
dei:LegalEntity
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents
us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax
us-gaap:StatementEquityComponents
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents
us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax
us-gaap:StatementEquityComponents
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents
us-gaap:ReclassificationFromAociCurrentPeriodTax
us-gaap:StatementEquityComponents

us-gaap:RepaymentsOfLongTermDebtAndCapitalSecurities
dei:LegalEntity
us-gaap:DebtInstrument
us-gaap:RepaymentsOfNotesPayable

us-gaap:ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost
dei:LegalEntity

us-gaap:RestructuringCharges
us-gaap:StatementBusinessSegments

us-gaap:RestructuringCostsAndAssetImpairmentCharges
dei:LegalEntity

us-gaap:RestructuringSettlementAndImpairmentProvisions
dei:LegalEntity
us-gaap:RestructuringCostAndReserve, us-gaap:RestructuringPlan
us-gaap:RestructuringCostAndReserve, us-gaap:RestructuringPlan, us-gaap:StatementBusinessSegments
us-gaap:RestructuringPlan
us-gaap:RestructuringPlan, us-gaap:StatementBusinessSegments

us-gaap:RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue

us-gaap:ShortTermLeaseCost
us-gaap:StatementEquityComponents
us-gaap:StockholdersEquityOther
us-gaap:StatementEquityComponents, dei:LegalEntity
us-gaap:AdjustmentsForNewAccountingPronouncements, us-gaap:StatementEquityComponents
us-gaap:StockholdersEquityPeriodIncreaseDecrease
us-gaap:AdjustmentsForNewAccountingPronouncements, us-gaap:StatementEquityComponents, dei:LegalEntity

us-gaap:SubleaseIncome
us-gaap:StatementEquityComponents
us-gaap:TreasuryStockValueAcquiredCostMethod

us-gaap:UndistributedContinuingOperationEarningsLossAllocationToParticipatingSecuritiesBasic

us-gaap:VariableLeaseCost

dei:EntityCommonStockSharesOutstanding

dow:AsbestosRelatedLiabilitiesNoncurrent
dei:LegalEntity

dow:AvailableforsaleDebtSecuritiesAmortizedCostBasisCurrent

dow:CashEquivalentsFairValue
us-gaap:InvestmentType

dow:CashEquivalentsMarketableSecuritiesandOtherInvestmentsAccumulatedGrossUnrealizedGainBeforeTax

dow:CashEquivalentsMarketableSecuritiesandOtherInvestmentsAccumulatedGrossUnrealizedLossBeforeTax

dow:CashEquivalentsMarketableSecuritiesandOtherInvestmentsAmortizedCostBasis

dow:CashEquivalentsMarketableSecuritiesandOtherInvestmentsFairValue
us-gaap:BalanceSheetLocation
dow:Deferredcashcontribution

dow:DerivativeAssetsLiabilitiesAccumulatedGrossUnrealizedGainBeforeTax
us-gaap:DerivativeInstrumentRisk

dow:DerivativeAssetsLiabilitiesAccumulatedGrossUnrealizedLossBeforeTax
us-gaap:DerivativeInstrumentRisk

dow:EquityMethodInvestmentLiabilityNoncurrent
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

dow:EquityMethodInvestmentNetofInvestmentLiabilities

dow:EquitySecuritiesAccumulatedGrossUnrealizedGainBeforeTax

dow:EquitySecuritiesAccumulatedGrossUnrealizedLossBeforeTax

dow:EquitySecuritiesAmortizedCostBasis

dow:EquitySecuritiesFairValue

dow:GrossLifeInsuranceCorporateOrBankOwnedAmount
dei:LegalEntity
dow:IndemnificationAsset
us-gaap:BalanceSheetLocation
us-gaap:BalanceSheetLocation
dow:Indemnificationliability

dow:LongTermDebtAccumulatedFairValueAdjustment

dow:LongTermDebtAccumulatedGrossUnrealizedGainBeforeTax

dow:LongTermDebtAccumulatedGrossUnrealizedLossBeforeTax

dow:OtherInvestmentsandSecuritiesAccumulatedGrossUnrealizedGainBeforeTax

dow:OtherInvestmentsandSecuritiesAccumulatedGrossUnrealizedLossBeforeTax

dow:TotalLeaseAssets

dow:TotalLeaseLiabilities

us-gaap:AccountsPayableOtherCurrent
dei:LegalEntity

us-gaap:AccountsPayableTradeCurrent
dei:LegalEntity

us-gaap:AccrualForEnvironmentalLossContingencies
us-gaap:LossContingenciesByNatureOfContingency

us-gaap:AccruedLiabilitiesCurrent
dei:LegalEntity
us-gaap:ConsolidatedEntities

us-gaap:AdditionalPaidInCapital
dei:LegalEntity

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent
us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:AssetsFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency

us-gaap:AssetsNoncurrentOtherThanNoncurrentInvestmentsAndPropertyPlantAndEquipment
dei:LegalEntity

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesDebtSecurities
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesDebtSecuritiesCurrent

us-gaap:AvailableForSaleSecuritiesEquitySecurities
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:InvestmentType
us-gaap:CashAndCashEquivalentsFairValueDisclosure
us-gaap:FairValueByMeasurementFrequency, us-gaap:InvestmentType

us-gaap:CashEquivalentsAtCarryingValue
us-gaap:InvestmentType

us-gaap:ContractWithCustomerAssetNetCurrent

us-gaap:ContractWithCustomerAssetNetNoncurrent

us-gaap:ContractWithCustomerLiabilityCurrent

us-gaap:ContractWithCustomerLiabilityNoncurrent
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrumentCarryingAmount
us-gaap:LongtermDebtType
us-gaap:DebtInstrument
us-gaap:DebtInstrumentFaceAmount

us-gaap:DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
us-gaap:FinancialInstrument
dei:LegalEntity
us-gaap:DeferredIncomeTaxAssetsNet
us-gaap:BalanceSheetLocation
dei:LegalEntity
us-gaap:DeferredIncomeTaxLiabilitiesNet
us-gaap:BalanceSheetLocation

us-gaap:DerivativeAmountOfHedgedItem

us-gaap:DerivativeAssetCollateralObligationToReturnCashOffset
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:HedgingDesignation
us-gaap:DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:HedgingDesignation
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:HedgingDesignation
us-gaap:DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:HedgingDesignation
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:HedgingDesignation
us-gaap:DerivativeAssets
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:HedgingDesignation

us-gaap:DerivativeAssetsLiabilitiesAtFairValueNet
us-gaap:DerivativeInstrumentRisk
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:HedgingDesignation
us-gaap:DerivativeFairValueOfDerivativeLiability
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:HedgingDesignation
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:HedgingDesignation
us-gaap:DerivativeLiabilities
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:HedgingDesignation

us-gaap:DerivativeLiabilityCollateralRightToReclaimCashOffset
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:HedgingDesignation
us-gaap:DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:HedgingDesignation
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementFrequency
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
us-gaap:DerivativeNonmonetaryNotionalAmount
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
us-gaap:DerivativeNotionalAmount

us-gaap:EquityMethodInvestments
dei:LegalEntity
us-gaap:ConsolidatedEntities, us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:EquitySecuritiesWithoutReadilyDeterminableFairValueAmount
us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments

us-gaap:FinanceLeaseLiability
us-gaap:LongtermDebtType

us-gaap:FinanceLeaseLiabilityCurrent

us-gaap:FinanceLeaseLiabilityNoncurrent

us-gaap:FinanceLeaseWeightedAverageDiscountRatePercent

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsGross
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:GuaranteeObligationsByNature
us-gaap:GuaranteeObligationsCurrentCarryingValue
us-gaap:GuaranteeObligationsByNature
us-gaap:GuaranteeObligationsMaximumExposure
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:GuaranteeObligationsByNature
us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass
us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill

us-gaap:IntangibleAssetsGrossExcludingGoodwill

us-gaap:InventoryAdjustments

us-gaap:InventoryGross

us-gaap:InventoryRawMaterials

us-gaap:InventoryWorkInProcess

us-gaap:InvestmentsFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:LiabilitiesFairValueDisclosure
us-gaap:FairValueByMeasurementFrequency

us-gaap:LiabilitiesOtherThanLongtermDebtNoncurrent
dei:LegalEntity

us-gaap:LiabilityForAsbestosAndEnvironmentalClaimsGross

us-gaap:LifeInsuranceCorporateOrBankOwnedAmount

us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity
us-gaap:CreditFacility, us-gaap:DebtInstrument

us-gaap:LineOfCreditFacilityRemainingBorrowingCapacity
us-gaap:CreditFacility, us-gaap:DebtInstrument

us-gaap:LongTermAccountsNotesAndLoansReceivableNetNoncurrent
dei:LegalEntity

us-gaap:LongTermDebtAndCapitalLeaseObligations
dei:LegalEntity
us-gaap:ConsolidatedEntities

us-gaap:LongTermDebtAndCapitalLeaseObligationsCurrent
dei:LegalEntity

us-gaap:LongTermDebtFairValue
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency

us-gaap:LongTermInvestmentsAndReceivablesNet
dei:LegalEntity
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:LongtermDebtWeightedAverageInterestRate
us-gaap:LongtermDebtType
us-gaap:ProductOrService, dei:LegalEntity
us-gaap:LossContingencyAccrualProductLiabilityNet
us-gaap:ProductOrService, us-gaap:BalanceSheetLocation, dei:LegalEntity
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:MarketableSecurities
us-gaap:FairValueByMeasurementFrequency

us-gaap:OperatingLeaseLiabilityCurrent
dei:LegalEntity

us-gaap:OperatingLeaseLiabilityNoncurrent
dei:LegalEntity

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

us-gaap:OtherInventorySupplies

us-gaap:OtherInvestmentsAndSecuritiesAtCost

us-gaap:OtherLongTermInvestments
dei:LegalEntity

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

us-gaap:RestrictedCashAndCashEquivalents
dei:LegalEntity
us-gaap:BalanceSheetLocation, us-gaap:RestructuringPlan
us-gaap:RestructuringReserve
us-gaap:RestructuringCostAndReserve, us-gaap:RestructuringPlan
us-gaap:RestructuringPlan

us-gaap:RevenueRemainingPerformanceObligation

us-gaap:ShortTermBorrowings
us-gaap:CreditFacility, us-gaap:ShortTermDebtType
us-gaap:ShortTermDebtType

us-gaap:ShortTermDebtWeightedAverageInterestRate

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

us-gaap:TreasuryStockShares

us-gaap:UnearnedESOPShares
dei:LegalEntity

Tables

  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:CommonStockValue ██▇▇▁▁887700NANANA
 us-gaap:CommonStockParOrStatedValuePerShare dei:LegalEntity dow:TheDowChemicalCompanyDomain▄▄▄▄0.010.010.010.01NA0.01NANANA
us-gaap:CommonStockSharesIssued ████▁▁75375174974900NANANA
us-gaap:CommonStockSharesAuthorized ████▁▁500050005000500000NANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding 742NA743747747NA747747NA
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic 740NA739742747NA747747NA
us-gaap:EarningsPerShareBasic ▆▁▆▆▇▇▇█0.32-3.130.450.10.741.19000000000000041.361.78NA
us-gaap:EarningsPerShareDiluted ▆▁▆▆▇▇▇█0.32-3.130.450.10.741.19000000000000041.361.78NA
us-gaap:IncomeLossFromContinuingOperationsPerBasicShare ▇▁▇▆▆▇███0.32-3.140.450.10.160.630.911.051.21
us-gaap:IncomeLossFromContinuingOperationsPerDilutedShare ▇▁▇▆▆▇███0.32-3.140.450.10.160.630.911.051.21
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax ▁▂▃▄▄▆██▇97701020410764110141096911944126341278912237
 us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax dei:LegalEntity dow:TheDowChemicalCompanyDomain▁▂▃▄▄▆██977010204107641101410969119441263412789NA
 us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:StatementBusinessSegments dow:IndustrialIntermediatesInfrastructure▁▃▃▃▄▆██30453253336533423480377039103969NA
 us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:StatementBusinessSegments dow:PackagingSpecialtyPlastics▁▂▃▄▃▇██46094840506252055138588961446124NA
 us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:StatementBusinessSegments dow:PerformanceMaterialsCoatings▁▁▄▅▄▃▇█20652035225023562282222125052624NA
us-gaap:Revenues ▁▂▂▃▆▄▅▅█97701020410764110141358211944126341278914899
 us-gaap:Revenues dow:BusinessGroup,us-gaap:StatementBusinessSegments dow:ConsumerSolutions,dow:PerformanceMaterialsCoatings▁▂▄▅▄▄▆█12371267135014091380134514551526NA
 us-gaap:Revenues dow:BusinessGroup,us-gaap:StatementBusinessSegments dow:HydrocarbonsEnergy,dow:PackagingSpecialtyPlastics▁▂▂▂▃▇█▇12191279132513491404187220081879NA
 us-gaap:Revenues dow:BusinessGroup,us-gaap:StatementBusinessSegments dow:IndustrialSolutions,dow:IndustrialIntermediatesInfrastructure▁▁▂▂▄▆█▇10541047106610701127119112321214NA
 us-gaap:Revenues dow:BusinessGroup,us-gaap:StatementBusinessSegments dow:PackagingandSpecialtyPlastics,dow:PackagingSpecialtyPlastics▁▂▄▅▄▆▇█33903561373738563734401741364245NA
 us-gaap:Revenues dow:BusinessGroup,us-gaap:StatementBusinessSegments dow:PolyurethanesCAV,dow:IndustrialIntermediatesInfrastructure▁▃▄▄▄▆▇█19882203229522692350257026742752NA
 us-gaap:Revenues us-gaap:StatementBusinessSegments dow:IndustrialIntermediatesInfrastructure▁▃▃▃▄▆██30453253336533423480377039103969NA
 us-gaap:Revenues us-gaap:StatementBusinessSegments dow:PackagingSpecialtyPlastics▁▂▃▄▃▇██46094840506252055138588961446124NA
 us-gaap:Revenues us-gaap:StatementBusinessSegments dow:PerformanceMaterialsCoatings▁▁▄▅▄▃▇█20652035225023562282222125052624NA
 us-gaap:Revenues us-gaap:StatementGeographical dow:EuropeMiddleEastAfricaandIndiaDomain▂▁█341133843621NA388241494386NANA
 us-gaap:Revenues us-gaap:StatementGeographical dow:U.S.Canada▁▁▂▃▆▃▅▅█355036123932407248844207460945515468
 us-gaap:Revenues us-gaap:StatementGeographical srt:AsiaPacific▁▃▃▃█▄▄▄█184522122193217032022374236224803256
us-gaap:CostOfGoodsAndServicesSold ▁▂▃▄▆▅▆▆█82308718937794201070710098104561054011552
 us-gaap:CostOfGoodsAndServicesSold dei:LegalEntity dow:TheDowChemicalCompanyDomain▁▂▄▅▄▇██82308719937794199142100981045610540NA
us-gaap:SellingGeneralAndAdministrativeExpense ▁▁▂▃▇▂▂▄█334332388422701406409485751
 us-gaap:SellingGeneralAndAdministrativeExpense dei:LegalEntity dow:TheDowChemicalCompanyDomain▁▁▄▅▆▄▅█334330389418448406409485NA
us-gaap:InterestExpenseDebt ▁▂▃▃▄█▅▆215222233237241282258261NA
 us-gaap:InterestExpenseDebt dei:LegalEntity dow:TheDowChemicalCompanyDomain▁▂▃▅▄█▅▆215224238249241282258261NA
us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax ▄▆▃▅▅▅▄▁█-163148-21667-31-33-98-470376
us-gaap:IncomeLossFromContinuingOperations ▇▁▇▆▆▇███258-231034790156491714810925
 us-gaap:IncomeLossFromContinuingOperations dei:LegalEntity dow:TheDowChemicalCompanyDomain▇▁▇▇▇▇██258-2292324217156491714810NA
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest ▆▁▆▅▆▆▇▇█396-219643721585854599410591740
 us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest dei:LegalEntity dow:TheDowChemicalCompanyDomain▇▁▇▆▆▇██396-21784143422975459941059NA
us-gaap:IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity 19NA141532NA3225NA
us-gaap:NonoperatingIncomeExpense ▁▄█-8192301NA7359-3NA83
us-gaap:IncomeTaxExpenseBenefit ▃▂▂▃▆▁▆▅█1381149012527254280249363
 us-gaap:IncomeTaxExpenseBenefit dei:LegalEntity dow:TheDowChemicalCompanyDomain▄▃▂▃▄▁█▇1381149012514154280249NA
us-gaap:ProfitLoss ▆▁▆▆▆▇▇██258-231034790586923104913641377
 us-gaap:ProfitLoss dei:LegalEntity dow:TheDowChemicalCompanyDomain▆▁▆▆▇▇▇█258-229232421760192310491364NA
us-gaap:ComprehensiveIncomeNetOfTax ▅▁▆▆▆▆▇▇█-44-335710971637145125911231832
us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest ▄▄▂▄█▆▅▁▅1920721513931-128
 us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest dei:LegalEntity dow:TheDowChemicalCompanyDomain▄▄▂▄█▆▅▁1920721513931-1NA
us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest ▅▁▆▆▆▆▇▇█-25-333711692688184129011221860
us-gaap:NetIncomeLoss 239NA33375541NA101313331342
 us-gaap:NetIncomeLoss dei:LegalEntity dow:TheDowChemicalCompanyDomain239NA310202556NA10131333NA
 us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic us-gaap:StatementEquityComponents us-gaap:RetainedEarnings▆▁▆▆▆▇▇██239-232333375541891101313331342
 us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic us-gaap:StatementEquityComponents,dei:LegalEntity us-gaap:RetainedEarnings,dow:TheDowChemicalCompanyDomain█▁█239-2305310NA5568911013NANA
us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted ▆▁▆▆▇▇▇█237-23253317355689110131333NA
us-gaap:NetIncomeLossAttributableToNoncontrollingInterest ▂▁▁▁█▅▆▅▆191314154532363135
 us-gaap:NetIncomeLossAttributableToNoncontrollingInterest dei:LegalEntity dow:TheDowChemicalCompanyDomain▂▁▁▁█▅▆▅1913141545323631NA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:Assets ▁▁▃▃█▇606866052464937648897973777378NANANA
 us-gaap:Assets dei:LegalEntity dow:TheDowChemicalCompanyDomain▁▁██60574603906481064704NA83699NANANA
 us-gaap:Liabilities us-gaap:ConsolidatedEntities us-gaap:VariableInterestEntityPrimaryBeneficiary▁█164196NANANANANANANA
us-gaap:LiabilitiesAndStockholdersEquity ▁▁▃▃█▇606866052464937648897973777378NANANA
 us-gaap:LiabilitiesAndStockholdersEquity dei:LegalEntity dow:TheDowChemicalCompanyDomain▁▁██60574603906481064704NA83699NANANA
us-gaap:StockholdersEquity ▁▁▃▃▆▆██▆129061354117399179112696626831327743252126781
 us-gaap:StockholdersEquity dei:LegalEntity dow:TheDowChemicalCompanyDomain▁▁▃▂████1367314309177801768032668324833277432521NA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:AssetsCurrent ▂▁▃▂██181381681518949186372566125263NANANA
 us-gaap:AssetsCurrent dei:LegalEntity dow:TheDowChemicalCompanyDomain▅▁█▇18059167331883618468NA39370NANANA
us-gaap:CashAndCashEquivalentsAtCarryingValue ▄▁▂▁▂▂▄▇█363323672823244629692669341148235186
 us-gaap:CashAndCashEquivalentsAtCarryingValue dei:LegalEntity dow:TheDowChemicalCompanyDomain▅▁▂▁▃▂▄█36332367282324462904272434114823NA
us-gaap:ShortTermInvestments ▁▂▂▂██1211120101100NANANA
 us-gaap:ShortTermInvestments dei:LegalEntity dow:TheDowChemicalCompanyDomain▁█▄█1211120NA100NANANA
us-gaap:AccountsReceivableNetCurrent ▁▁▂▃██484148445125566184288246NANANA
us-gaap:InventoryNet ▁▁▁▂█▇632462146416684195089260NANANA
 us-gaap:InventoryNet dei:LegalEntity dow:TheDowChemicalCompanyDomain▂▁▃█6324621464166841NA6899NANANA
us-gaap:InventoryFinishedGoods ▁▁▁▃██360735053627398857035640NANANA
us-gaap:OtherAssetsCurrent ▁▃█▅▄▇569658891761708852NANANA
 us-gaap:OtherAssetsCurrent dei:LegalEntity dow:TheDowChemicalCompanyDomain▁▃█▃490571774588NA712NANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:PropertyPlantAndEquipmentGross ▁▁▁▁██549425491054890549376176461437NANANA
 us-gaap:PropertyPlantAndEquipmentGross dei:LegalEntity dow:TheDowChemicalCompanyDomain█▄▁▇54942549105489054937NA53984NANANA
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment ▂▁▁▁█▇341363391433887336873827237775NANANA
 us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment dei:LegalEntity dow:TheDowChemicalCompanyDomain█▅▄▁34136339143388733687NA32566NANANA
us-gaap:PropertyPlantAndEquipmentNet ▁▁▁▂██208062099621003212502349223662NANANA
 us-gaap:PropertyPlantAndEquipmentNet dei:LegalEntity dow:TheDowChemicalCompanyDomain▁▄▄█20806209962100321250NA21418NANANA
us-gaap:Goodwill ▁▁▂▂██87808796978598481381213848NANANA
 us-gaap:Goodwill dei:LegalEntity dow:TheDowChemicalCompanyDomain▁▁██8780879697859848NA9846NANANA
 us-gaap:Goodwill us-gaap:StatementBusinessSegments dow:IndustrialIntermediatesInfrastructure▇█▁▄1099110010901094NA1095NANANA
 us-gaap:Goodwill us-gaap:StatementBusinessSegments dow:PackagingSpecialtyPlastics██▁▄5108510950855097NA5101NANANA
 us-gaap:Goodwill us-gaap:StatementBusinessSegments dow:PerformanceMaterialsCoatings▁▁██2573258736103657NA3650NANANA
us-gaap:IntangibleAssetsNetExcludingGoodwill ▁▂▂▃▇█363637593859400047434913NANANA
 us-gaap:IntangibleAssetsNetExcludingGoodwill dei:LegalEntity dow:TheDowChemicalCompanyDomain▁▃▅█3636375938594000NA4225NANANA
us-gaap:FiniteLivedIntangibleAssetsNet ▁▂▂▃▇█363637563856399746944864NANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass us-gaap:ComputerSoftwareIntangibleAsset▁▂▃▃▇█543556567579639653NANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass us-gaap:CustomerRelatedIntangibleAssets▁▂▂▃▇█196520232060213726872760NANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass us-gaap:DevelopedTechnologyRights▁▃▄▆▆█111811671219127112571321NANANA
us-gaap:OtherAssetsNoncurrent █▂▂▁▃▁1068818821803859796NANANA
 us-gaap:OtherAssetsNoncurrent dei:LegalEntity dow:TheDowChemicalCompanyDomain█▁▂▁1067818820801NA735NANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:LiabilitiesCurrent ▂▁▂▂█▆111211067911201116051537313755NANANA
 us-gaap:LiabilitiesCurrent dei:LegalEntity dow:TheDowChemicalCompanyDomain▃▁▅█10624101501124612217NA15547NANANA
us-gaap:NotesPayableCurrent █▃▂▂▁▁1490586517544317305NANANA
 us-gaap:NotesPayableCurrent dei:LegalEntity dow:TheDowChemicalCompanyDomain▇▁▃█14905869351691NA298NANANA
us-gaap:AccruedIncomeTaxesCurrent ▃▄▃▁▆█468522490370699791NANANA
 us-gaap:AccruedIncomeTaxesCurrent dei:LegalEntity dow:TheDowChemicalCompanyDomain▆█▇▁468522490370NA557NANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:LongTermDebt ▂▁▄▃██166971641017591174521952919594NANANA
 us-gaap:LongTermDebt us-gaap:DebtInstrument,dei:LegalEntity dow:TotalProjectFinancing,dow:SadaraChemicalCompany▁▁█108001080011200NANA11700NANANA
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent ▇█▁▂▄▄9832100838447867491039226NANANA
 us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent dei:LegalEntity dow:TheDowChemicalCompanyDomain▇█▁▂98321008384478674NA8926NANANA
us-gaap:MinorityInterest ▁▁▁▁█▇███55555358758911801138118111521190
 us-gaap:MinorityInterest dei:LegalEntity dow:TheDowChemicalCompanyDomain▁▁██555553587589NA1138NANANA
 us-gaap:MinorityInterest us-gaap:StatementEquityComponents us-gaap:NoncontrollingInterest▁▁▁▁█▇███55555358758911801138118111521190
us-gaap:OtherLiabilitiesNoncurrent █▆█▂▄▁693765476888556359755368NANANA
 us-gaap:OtherLiabilitiesNoncurrent dei:LegalEntity dow:TheDowChemicalCompanyDomain█▆▇▁6555617463354997NA4709NANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:StockholdersEquity ▁▁▃▃▆▆██▆129061354117399179112696626831327743252126781
 us-gaap:StockholdersEquity dei:LegalEntity dow:TheDowChemicalCompanyDomain▁▁▃▂████1367314309177801768032668324833277432521NA
us-gaap:CommonStockValue ██▇▇▁▁887700NANANA
us-gaap:RetainedEarningsAccumulatedDeficit ▁▁▃▃██167631704519873201102970129808NANANA
 us-gaap:RetainedEarningsAccumulatedDeficit dei:LegalEntity dow:TheDowChemicalCompanyDomain▁▂█▇16905173131984919575NA35460NANANA
us-gaap:TreasuryStockValue █▅▃▁625500406305NA0NANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▁▂▇█▄▄▇▆-10529-10246-9219-8988-9783-9885-9146-9387NA
 us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges▁▂▂▃▅▆█▆▅-556-394-469-335-131-56201-7-103
 us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss▂██▇▅▁▃▃▄-3664604916-51-15-23-8
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▆█▇▄▆▇▄█▁123919501724830142617307311951-158
 us-gaap:NetCashProvidedByUsedInOperatingActivities dei:LegalEntity dow:TheDowChemicalCompanyDomain▄█▇▂▅▇▁12391940181494213811730731NANA
us-gaap:NetCashProvidedByUsedInInvestingActivities ▇▄▃▅▅▁▁▆█-153-597-715-394-486-885-858-360-92
us-gaap:NetCashProvidedByUsedInFinancingActivities █▁▅▄▅▂▃▁▄265-1839-589-1000-667-1483-1309-1759-853
 us-gaap:NetCashProvidedByUsedInFinancingActivities dei:LegalEntity dow:TheDowChemicalCompanyDomain█▁▅▃▅▂▃265-1829-679-1101-633-1483-1309NANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▆█▇▄▆▇▄█▁123919501724830142617307311951-158
 us-gaap:NetCashProvidedByUsedInOperatingActivities dei:LegalEntity dow:TheDowChemicalCompanyDomain▄█▇▂▅▇▁12391940181494213811730731NANA
us-gaap:NetIncomeLoss 239NA33375541NA101313331342
 us-gaap:NetIncomeLoss dei:LegalEntity dow:TheDowChemicalCompanyDomain239NA310202556NA10131333NA
us-gaap:ProfitLoss ▆▁▆▆▆▇▇██258-231034790586923104913641377
 us-gaap:ProfitLoss dei:LegalEntity dow:TheDowChemicalCompanyDomain▆▁▆▆▇▇▇█258-229232421760192310491364NA
us-gaap:DepreciationDepletionAndAmortization ▄▄▅▂█▄▅▁█724713739646840726732614837
 us-gaap:DepreciationDepletionAndAmortization dei:LegalEntity dow:TheDowChemicalCompanyDomain▄▁▇██▄▅724713739743743726732NANA
us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet ▅▇▄▃▅█▅▁▆2541301-108-7181111870176-1999684
us-gaap:IncreaseDecreaseInInventories ▄▃▅▄▅█▄▁▇-111-1151425-2082661979-208-21511239
 us-gaap:IncreaseDecreaseInInventories dei:LegalEntity dow:TheDowChemicalCompanyDomain▇▄▁▅▆▃█111-185-425-10547-261208NANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities ▇▄▃▅▅▁▁▆█-153-597-715-394-486-885-858-360-92
us-gaap:PaymentsToAcquireInvestments ▁▁█▄▂▄█128115391220173229401NANA
 us-gaap:PaymentsToAcquireInvestments dei:LegalEntity dow:TheDowChemicalCompanyDomain▁▁█▄▂▄█128115391220173229401NANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities █▁▅▄▅▂▃▁▄265-1839-589-1000-667-1483-1309-1759-853
 us-gaap:NetCashProvidedByUsedInFinancingActivities dei:LegalEntity dow:TheDowChemicalCompanyDomain█▁▅▃▅▂▃265-1829-679-1101-633-1483-1309NANA
us-gaap:PaymentsOfDividends ▁▁▁▁▅▅███0000535553104810531057
 us-gaap:PaymentsOfDividends dei:LegalEntity dow:TheDowChemicalCompanyDomain0NA00535NA1048NANA
us-gaap:PaymentsOfDividends ▁▁▁▁▅▅███0000535553104810531057
 us-gaap:PaymentsOfDividends dei:LegalEntity dow:TheDowChemicalCompanyDomain0NA00535NA1048NANA
us-gaap:PaymentsForRepurchaseOfCommonStock ▄▃▃█▁▁▁12594101305000NANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument dow:A050PercentNotesDue20270.005NANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument dow:A1125PercentNotesDue20320.01125NANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument dow:A1875PercentNotesDue20400.01875NANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument dow:A30PercentNotesDue20220.03NANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument dow:EurosNotes0.01NANANANANANANANA

Common Stock Value

us-gaap:CommonStockValue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value887700
Percentage of CommonStockValue100.0100.0100.0100.00.00.0
Percentage of Assets0.00.00.00.00.00.0

Common Stock Par Or Stated Value Per Share

dei:LegalEntity

us-gaap:CommonStockParOrStatedValuePerShare

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-04-012018-12-312017-09-012017-08-31
Value0.010.010.010.010.010.010.012.5
Percentage of CommonStockParOrStatedValuePerShare100.0100.0100.0100.0100.0100.0100.0100.0

Shares Outstanding

Common Stock Shares Issued

us-gaap:CommonStockSharesIssued



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value75375174974900
Percentage of CommonStockSharesIssued100.0100.0100.0100.0100.0100.0

Common Stock Shares Outstanding

Common Stock Shares Authorized

us-gaap:CommonStockSharesAuthorized



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value500050005000500000
Percentage of CommonStockSharesAuthorized100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value742743747747747747
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value740739742747747747
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0.32-3.130.450.10.741.19000000000000041.361.78
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0.32-3.130.450.10.741.19000000000000041.361.78
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0

Income Loss From Continuing Operations Per Basic Share

us-gaap:IncomeLossFromContinuingOperationsPerBasicShare



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.32-3.140.450.10.160.630.911.051.21
Percentage of IncomeLossFromContinuingOperationsPerBasicShare100.0100.0100.0100.0100.0100.0100.0100.0100.0

Income Loss From Continuing Operations Per Diluted Share

us-gaap:IncomeLossFromContinuingOperationsPerDilutedShare



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.32-3.140.450.10.160.630.911.051.21
Percentage of IncomeLossFromContinuingOperationsPerDilutedShare100.0100.0100.0100.0100.0100.0100.0100.0100.0

Revenue From Contract With Customer Including Assessed Tax

us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value97701020410764110141096911944126341278912237
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value977010204107641101410969119441263412789
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax dow:TheDowChemicalCompanyDomain100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementBusinessSegments

dow:IndustrialIntermediatesInfrastructure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value30453253336533423480377039103969
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax31.231.931.330.331.731.630.931.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax31.231.931.330.331.731.630.931.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax dow:IndustrialIntermediatesInfrastructure100.0100.0100.0100.0100.0100.0100.0100.0

dow:PackagingSpecialtyPlastics



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value46094840506252055138588961446124
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax47.247.447.047.346.849.348.647.9
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax47.247.447.047.346.849.348.647.9
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax dow:PackagingSpecialtyPlastics100.0100.0100.0100.0100.0100.0100.0100.0

dow:PerformanceMaterialsCoatings



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value20652035225023562282222125052624
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax21.119.920.921.420.818.619.820.5
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax21.119.920.921.420.818.619.820.5
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax dow:PerformanceMaterialsCoatings100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Corporate



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value51768711169647572
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.50.70.81.00.60.50.60.6
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.50.70.81.00.60.50.60.6
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:Corporate100.0100.0100.0100.0100.0100.0100.0100.0

Revenues

us-gaap:Revenues



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value97701020410764110141358211944126341278914899
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax100.0100.0100.0100.0123.8100.0100.0100.0121.8

dow:BusinessGroup, us-gaap:StatementBusinessSegments

dow:CoatingsandPerformanceMonomers, dow:PerformanceMaterialsCoatings



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value82876890094790287610501098
Percentage of Revenues8.57.58.48.66.67.38.38.6
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax8.57.58.48.68.27.38.38.6
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax dow:CoatingsandPerformanceMonomers dow:PerformanceMaterialsCoatings0.00.00.00.00.00.00.00.0

dow:ConsumerSolutions, dow:PerformanceMaterialsCoatings



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value12371267135014091380134514551526
Percentage of Revenues12.712.412.512.810.211.311.511.9
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax12.712.412.512.812.611.311.511.9
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax dow:ConsumerSolutions dow:PerformanceMaterialsCoatings0.00.00.00.00.00.00.00.0

dow:HydrocarbonsEnergy, dow:PackagingSpecialtyPlastics



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value12191279132513491404187220081879
Percentage of Revenues12.512.512.312.210.315.715.914.7
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax12.512.512.312.212.815.715.914.7
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax dow:HydrocarbonsEnergy dow:PackagingSpecialtyPlastics0.00.00.00.00.00.00.00.0

dow:IndustrialSolutions, dow:IndustrialIntermediatesInfrastructure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value10541047106610701127119112321214
Percentage of Revenues10.810.39.99.78.310.09.89.5
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax10.810.39.99.710.310.09.89.5
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax dow:IndustrialSolutions dow:IndustrialIntermediatesInfrastructure0.00.00.00.00.00.00.00.0

dow:Other, dow:IndustrialIntermediatesInfrastructure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value33433943
Percentage of Revenues0.00.00.00.00.00.10.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.10.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax dow:Other dow:IndustrialIntermediatesInfrastructure0.00.00.00.00.00.00.00.0

dow:PackagingandSpecialtyPlastics, dow:PackagingSpecialtyPlastics



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value33903561373738563734401741364245
Percentage of Revenues34.734.934.735.027.533.632.733.2
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax34.734.934.735.034.033.632.733.2
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax dow:PackagingandSpecialtyPlastics dow:PackagingSpecialtyPlastics0.00.00.00.00.00.00.00.0

dow:PolyurethanesCAV, dow:IndustrialIntermediatesInfrastructure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value19882203229522692350257026742752
Percentage of Revenues20.321.621.320.617.321.521.221.5
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax20.321.621.320.621.421.521.221.5
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax dow:PolyurethanesCAV dow:IndustrialIntermediatesInfrastructure0.00.00.00.00.00.00.00.0

us-gaap:StatementBusinessSegments

dow:IndustrialIntermediatesInfrastructure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value30453253336533423480377039103969
Percentage of Revenues31.231.931.330.325.631.630.931.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax31.231.931.330.331.731.630.931.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax dow:IndustrialIntermediatesInfrastructure100.0100.0100.0100.0100.0100.0100.0100.0

dow:PackagingSpecialtyPlastics



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value46094840506252055138588961446124
Percentage of Revenues47.247.447.047.337.849.348.647.9
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax47.247.447.047.346.849.348.647.9
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax dow:PackagingSpecialtyPlastics100.0100.0100.0100.0100.0100.0100.0100.0

dow:PerformanceMaterialsCoatings



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value20652035225023562282222125052624
Percentage of Revenues21.119.920.921.416.818.619.820.5
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax21.119.920.921.420.818.619.820.5
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax dow:PerformanceMaterialsCoatings100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Corporate



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value51768711169647572
Percentage of Revenues0.50.70.81.00.50.50.60.6
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.50.70.81.00.60.50.60.6
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:Corporate100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementGeographical

dow:EuropeMiddleEastAfricaandIndiaDomain



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value341133843621388241494386
Percentage of Revenues34.933.233.628.634.734.7
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax34.933.233.635.434.734.7
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax dow:EuropeMiddleEastAfricaandIndiaDomain0.00.00.00.00.00.0

dow:U.S.Canada



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value355036123932407248844207460945515468
Percentage of Revenues36.335.436.537.036.035.236.535.636.7
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax36.335.436.537.044.535.236.535.644.7
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax dow:U.S.Canada0.00.00.00.00.00.00.00.00.0

srt:AsiaPacific



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value184522122193217032022374236224803256
Percentage of Revenues18.921.720.419.723.619.918.719.421.9
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax18.921.720.419.729.219.918.719.426.6
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax srt:AsiaPacific0.00.00.00.00.00.00.00.00.0

srt:LatinAmerica



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value9649961018104712851214127712851410
Percentage of Revenues9.99.89.59.59.510.210.110.09.5
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax9.99.89.59.511.710.210.110.011.5
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax srt:LatinAmerica0.00.00.00.00.00.00.00.00.0

Cost Of Goods And Services Sold

us-gaap:CostOfGoodsAndServicesSold



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value82308718937794201070710098104561054011552
Percentage of CostOfGoodsAndServicesSold100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax84.285.487.185.597.684.582.882.494.4

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value82308719937794199142100981045610540
Percentage of CostOfGoodsAndServicesSold100.0100.0100.0100.085.4100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax84.285.487.185.583.384.582.882.4
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax dow:TheDowChemicalCompanyDomain84.285.487.185.583.384.582.882.4

Gross Profit

Research And Development Expense

Selling General And Administrative Expense

us-gaap:SellingGeneralAndAdministrativeExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value334332388422701406409485751
Percentage of SellingGeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax3.43.33.63.86.43.43.23.86.1

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value334330389418448406409485
Percentage of SellingGeneralAndAdministrativeExpense100.099.4100.399.163.9100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax3.43.23.63.84.13.43.23.8
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax dow:TheDowChemicalCompanyDomain3.43.23.63.84.13.43.23.8

Interest And Debt Expense

Interest Expense Debt

us-gaap:InterestExpenseDebt



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value215222233237241282258261
Percentage of InterestExpenseDebt100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax2.22.22.22.22.22.42.02.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value215224238249241282258261
Percentage of InterestExpenseDebt100.0100.9102.1105.1100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax2.22.22.22.32.22.42.02.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax dow:TheDowChemicalCompanyDomain2.22.22.22.32.22.42.02.0

Other Nonoperating Income Expense

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

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-163148-21667-31-33-98-470376
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax-1.71.5-2.00.6-0.3-0.3-0.8-3.73.1

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-163148-21667-31-33-98-470
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax-1.71.5-2.00.6-0.3-0.3-0.8-3.7
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax dow:TheDowChemicalCompanyDomain-1.71.5-2.00.6-0.3-0.3-0.8-3.7

Income Loss From Continuing Operations

us-gaap:IncomeLossFromContinuingOperations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value258-231034790156491714810925
Percentage of IncomeLossFromContinuingOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax2.6-22.63.20.81.44.15.76.37.6

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value258-2292324217156491714810
Percentage of IncomeLossFromContinuingOperations100.099.293.4241.1100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax2.6-22.53.02.01.44.15.76.3
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax dow:TheDowChemicalCompanyDomain2.6-22.53.02.01.44.15.76.3

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

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value396-219643721585854599410591740
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax4.1-21.54.12.07.84.67.98.314.2

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value396-21784143422975459941059
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.099.294.7159.134.6100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax4.1-21.33.83.12.74.67.98.3
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax dow:TheDowChemicalCompanyDomain4.1-21.33.83.12.74.67.98.3

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

us-gaap:IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value191415323225
Percentage of IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.20.10.10.30.30.2

us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-19-13-14-15-32-24-32-25
Percentage of IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity-100.00.0-100.0-100.0-100.00.0-100.0-100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax-0.2-0.1-0.1-0.1-0.3-0.2-0.3-0.2
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.0

Nonoperating Income Expense

us-gaap:NonoperatingIncomeExpense



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-302018-03-31
Value-81923017359-383
Percentage of NonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax-0.80.92.80.70.5-0.00.7

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-821112841096959-3-14
Percentage of NonoperatingIncomeExpense101.2120.794.40.094.5100.0100.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax-0.81.12.61.00.60.5-0.0-0.1
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax dow:TheDowChemicalCompanyDomain-0.81.12.61.00.60.5-0.0-0.1

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1381149012527254280249363
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax1.41.10.81.12.50.52.21.93.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value1381149012514154280249
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.051.8100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax1.41.10.81.11.30.52.21.9
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax dow:TheDowChemicalCompanyDomain1.41.10.81.11.30.52.21.9

Profit Loss

us-gaap:ProfitLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value258-231034790586923104913641377
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax2.6-22.63.20.85.37.78.310.711.3

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value258-229232421760192310491364
Percentage of ProfitLoss100.099.293.4241.1102.6100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax2.6-22.53.02.05.57.78.310.7
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax dow:TheDowChemicalCompanyDomain2.6-22.53.02.05.57.78.310.7

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-44-335710971637145125911231832
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax-0.5-32.91.00.65.81.210.08.815.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-44-33398619865214512591123
Percentage of ComprehensiveIncomeNetOfTax100.099.578.9278.9102.4100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax-0.5-32.70.81.85.91.210.08.8
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax dow:TheDowChemicalCompanyDomain-0.5-32.70.81.85.91.210.08.8

Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1920721513931-128
Percentage of ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.20.20.10.20.50.30.2-0.00.2

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value1920721513931-1
Percentage of ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.20.20.10.20.50.30.2-0.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax dow:TheDowChemicalCompanyDomain0.20.20.10.20.50.30.2-0.0

Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-25-333711692688184129011221860
Percentage of ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax-0.3-32.71.10.86.31.510.28.815.2

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-25-33199321970318412901122
Percentage of ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest100.099.580.2238.0102.2100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax-0.3-32.50.92.06.41.510.28.8
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax dow:TheDowChemicalCompanyDomain-0.3-32.50.92.06.41.510.28.8

Net Income Loss

us-gaap:NetIncomeLoss



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value23933375541101313331342
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax2.43.10.74.98.010.411.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value23931020255610131333
Percentage of NetIncomeLoss100.093.1269.3102.8100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax2.42.91.85.18.010.4
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax dow:TheDowChemicalCompanyDomain2.42.91.85.18.010.4

Net Income Loss Available To Common Stockholders Basic

us-gaap:StatementEquityComponents

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic

us-gaap:RetainedEarnings



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value239-232333375541891101313331342
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax2.4-22.83.10.74.97.58.010.411.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.0

us-gaap:StatementEquityComponents, dei:LegalEntity

us-gaap:RetainedEarnings, dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value239-23053105568911013
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic100.099.293.1102.8100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax2.4-22.62.95.17.58.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:RetainedEarnings dow:TheDowChemicalCompanyDomain0.00.00.00.00.00.0

Net Income Loss Available To Common Stockholders Diluted

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value237-23253317355689110131333
Percentage of NetIncomeLossAvailableToCommonStockholdersDiluted100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax2.4-22.83.10.75.17.58.010.4

Net Income Loss Attributable To Noncontrolling Interest

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value191314154532363135
Percentage of NetIncomeLossAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.20.10.10.10.40.30.30.20.3

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value1913141545323631
Percentage of NetIncomeLossAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.20.10.10.10.40.30.30.2
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax dow:TheDowChemicalCompanyDomain0.20.10.10.10.40.30.30.2

Assets

us-gaap:Assets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value606866052464937648897973777378
Percentage of Assets100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value6057460390648106470483699
Percentage of Assets99.899.899.899.7108.2
Percentage of Assets99.899.899.899.7108.2
Percentage of Assets dow:TheDowChemicalCompanyDomain100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

us-gaap:VariableInterestEntityPrimaryBeneficiary



Period End2020-03-312019-12-31
Value398436
Percentage of Assets0.70.7
Percentage of Assets0.70.7
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary100.0100.0

Liabilities

us-gaap:ConsolidatedEntities

us-gaap:Liabilities

us-gaap:VariableInterestEntityPrimaryBeneficiary



Period End2020-03-312019-12-31
Value164196
Percentage of Liabilities100.0100.0
Percentage of Assets0.30.3
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary41.245.0

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value606866052464937648897973777378
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value6057460390648106470483699
Percentage of LiabilitiesAndStockholdersEquity99.899.899.899.7108.2
Percentage of Assets99.899.899.899.7108.2
Percentage of Assets dow:TheDowChemicalCompanyDomain100.0100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value12906135411739917911269662683132774325212678131515
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets21.322.426.827.633.834.70.00.00.00.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value136731430917780176803266832483327743252131515
Percentage of StockholdersEquity105.9105.7102.298.7121.1121.1100.0100.0100.0
Percentage of Assets22.523.627.427.241.042.00.00.00.0
Percentage of Assets dow:TheDowChemicalCompanyDomain22.623.727.427.30.038.80.00.00.0

Assets Current

us-gaap:AssetsCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value181381681518949186372566125263
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0
Percentage of Assets29.927.829.228.732.232.6

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value1805916733188361846839370
Percentage of AssetsCurrent99.699.599.499.1155.8
Percentage of Assets29.827.629.028.550.9
Percentage of Assets dow:TheDowChemicalCompanyDomain29.827.729.128.547.0

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value3633236728232446296926693411482351866189
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.03.94.33.83.73.40.00.00.00.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value363323672823244629042724341148236189
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.097.8102.1100.0100.0100.0
Percentage of Assets6.03.94.33.83.63.50.00.00.0
Percentage of Assets dow:TheDowChemicalCompanyDomain6.03.94.43.80.03.30.00.00.0

us-gaap:ConsolidatedEntities

us-gaap:VariableInterestEntityPrimaryBeneficiary



Period End2020-03-312019-12-31
Value4437
Percentage of CashAndCashEquivalentsAtCarryingValue1.21.6
Percentage of Assets0.10.1
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary11.18.5

Short Term Investments

us-gaap:ShortTermInvestments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1211120101100
Percentage of ShortTermInvestments100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.10.1

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value1211120100
Percentage of ShortTermInvestments100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.1
Percentage of Assets dow:TheDowChemicalCompanyDomain0.00.00.00.00.1

Accounts Receivable Net Current

us-gaap:AccountsReceivableNetCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value484148445125566184288246
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0
Percentage of Assets8.08.07.98.710.610.7

Inventory Net

us-gaap:InventoryNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value632462146416684195089260
Percentage of InventoryNet100.0100.0100.0100.0100.0100.0
Percentage of Assets10.410.39.910.511.912.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value63246214641668416899
Percentage of InventoryNet100.0100.0100.0100.074.5
Percentage of Assets10.410.39.910.58.9
Percentage of Assets dow:TheDowChemicalCompanyDomain10.410.39.910.68.2

Inventory Finished Goods

us-gaap:InventoryFinishedGoods



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value360735053627398857035640
Percentage of InventoryFinishedGoods100.0100.0100.0100.0100.0100.0
Percentage of Assets5.95.85.66.17.27.3

Inventory L I F O Reserve

Other Assets Current

us-gaap:OtherAssetsCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value569658891761708852
Percentage of OtherAssetsCurrent100.0100.0100.0100.0100.0100.0
Percentage of Assets0.91.11.41.20.91.1

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value490571774588712
Percentage of OtherAssetsCurrent86.186.886.977.383.6
Percentage of Assets0.80.91.20.90.9
Percentage of Assets dow:TheDowChemicalCompanyDomain0.80.91.20.90.9

us-gaap:ConsolidatedEntities

us-gaap:VariableInterestEntityPrimaryBeneficiary



Period End2020-03-312019-12-31
Value5251
Percentage of OtherAssetsCurrent9.17.8
Percentage of Assets0.10.1
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary13.111.7

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value549425491054890549376176461437
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0
Percentage of Assets90.590.784.584.777.579.4

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value5494254910548905493753984
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.087.9
Percentage of Assets90.590.784.584.769.8
Percentage of Assets dow:TheDowChemicalCompanyDomain90.790.984.784.964.5

us-gaap:PropertyPlantAndEquipmentByType

dow:FinanceLeases



Period End2020-03-312019-12-312019-09-302019-06-302019-03-31
Value526486501466437
Percentage of PropertyPlantAndEquipmentGross1.00.90.90.80.7
Percentage of Assets0.90.80.80.70.5
Percentage of Assets dow:FinanceLeases0.00.00.00.00.0

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value341363391433887336873827237775
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0
Percentage of Assets56.356.052.251.948.048.8

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value3413633914338873368732566
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.086.2
Percentage of Assets56.356.052.251.942.1
Percentage of Assets dow:TheDowChemicalCompanyDomain56.456.252.352.138.9

us-gaap:PropertyPlantAndEquipmentByType

dow:FinanceLeases



Period End2020-03-312019-12-312019-09-302019-06-302019-03-31
Value179167158145143
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment0.50.50.50.40.4
Percentage of Assets0.30.30.20.20.2
Percentage of Assets dow:FinanceLeases0.00.00.00.00.0

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value20806209962100321250234922366221584
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets34.334.732.332.729.530.60.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value2080620996210032125021418
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.090.5
Percentage of Assets34.334.732.332.727.7
Percentage of Assets dow:TheDowChemicalCompanyDomain34.334.832.432.825.6

us-gaap:ConsolidatedEntities

us-gaap:VariableInterestEntityPrimaryBeneficiary



Period End2020-03-312019-12-31
Value286330
Percentage of PropertyPlantAndEquipmentNet1.41.6
Percentage of Assets0.50.5
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary71.975.7

Goodwill

us-gaap:Goodwill



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value878087969785984813812138489833
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets14.514.515.115.217.317.90.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value87808796978598489846
Percentage of Goodwill100.0100.0100.0100.071.1
Percentage of Assets14.514.515.115.212.7
Percentage of Assets dow:TheDowChemicalCompanyDomain14.514.615.115.211.8

us-gaap:StatementBusinessSegments

dow:IndustrialIntermediatesInfrastructure



Period End2020-03-312019-12-312019-09-302019-06-302018-12-312017-12-31
Value109911001090109410951101
Percentage of Goodwill12.512.511.111.17.911.2
Percentage of Assets1.81.81.71.71.40.0
Percentage of Assets dow:IndustrialIntermediatesInfrastructure0.09.40.00.00.00.0

dow:PackagingSpecialtyPlastics



Period End2020-03-312019-12-312019-09-302019-06-302018-12-312017-12-31
Value510851095085509751015043
Percentage of Goodwill58.258.152.051.836.851.3
Percentage of Assets8.48.47.87.96.60.0
Percentage of Assets dow:PackagingSpecialtyPlastics0.017.30.00.00.00.0

dow:PerformanceMaterialsCoatings



Period End2020-03-312019-12-312019-09-302019-06-302018-12-312017-12-31
Value257325873610365736503689
Percentage of Goodwill29.329.436.937.126.437.5
Percentage of Assets4.24.35.65.64.70.0
Percentage of Assets dow:PerformanceMaterialsCoatings0.018.40.00.00.00.0

Intangible Assets Net Excluding Goodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value363637593859400047434913
Percentage of IntangibleAssetsNetExcludingGoodwill100.0100.0100.0100.0100.0100.0
Percentage of Assets6.06.25.96.25.96.3

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value36363759385940004225
Percentage of IntangibleAssetsNetExcludingGoodwill100.0100.0100.0100.086.0
Percentage of Assets6.06.25.96.25.5
Percentage of Assets dow:TheDowChemicalCompanyDomain6.06.26.06.25.0

Finite Lived Intangible Assets Net

us-gaap:FiniteLivedIntangibleAssetsNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value363637563856399746944864
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0100.0100.0
Percentage of Assets6.06.25.96.25.96.3

us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:ComputerSoftwareIntangibleAsset



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value543556567579639653
Percentage of FiniteLivedIntangibleAssetsNet14.914.814.714.513.613.4
Percentage of Assets0.90.90.90.90.80.8
Percentage of Assets us-gaap:ComputerSoftwareIntangibleAsset0.00.00.00.00.00.0

us-gaap:CustomerRelatedIntangibleAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value196520232060213726872760
Percentage of FiniteLivedIntangibleAssetsNet54.053.953.453.557.256.7
Percentage of Assets3.23.33.23.33.43.6
Percentage of Assets us-gaap:CustomerRelatedIntangibleAssets0.00.00.00.00.00.0

us-gaap:DevelopedTechnologyRights



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value111811671219127112571321
Percentage of FiniteLivedIntangibleAssetsNet30.731.131.631.826.827.2
Percentage of Assets1.81.91.92.01.61.7
Percentage of Assets us-gaap:DevelopedTechnologyRights0.00.00.00.00.00.0

us-gaap:TrademarksAndTradeNames



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value101010104257
Percentage of FiniteLivedIntangibleAssetsNet0.30.30.30.30.91.2
Percentage of Assets0.00.00.00.00.10.1
Percentage of Assets us-gaap:TrademarksAndTradeNames0.00.00.00.00.00.0

Other Assets Noncurrent

us-gaap:OtherAssetsNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1068818821803859796
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0
Percentage of Assets1.81.41.31.21.11.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value1067818820801735
Percentage of OtherAssetsNoncurrent99.9100.099.999.892.3
Percentage of Assets1.81.41.31.20.9
Percentage of Assets dow:TheDowChemicalCompanyDomain1.81.41.31.20.9

us-gaap:ConsolidatedEntities

us-gaap:VariableInterestEntityPrimaryBeneficiary



Period End2020-03-312019-12-31
Value1618
Percentage of OtherAssetsNoncurrent1.52.2
Percentage of Assets0.00.0
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary4.04.1

Liabilities Current

us-gaap:LiabilitiesCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value111211067911201116051537313755
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0
Percentage of Assets18.317.617.217.919.317.8

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value1062410150112461221715547
Percentage of LiabilitiesCurrent95.595.0100.4105.3113.0
Percentage of Assets17.516.817.318.820.1
Percentage of Assets dow:TheDowChemicalCompanyDomain17.516.817.418.918.6

Notes Payable Current

us-gaap:NotesPayableCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1490586517544317305
Percentage of NotesPayableCurrent100.0100.0100.0100.0100.0100.0
Percentage of Assets2.51.00.80.80.40.4

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value14905869351691298
Percentage of NotesPayableCurrent100.0100.0180.9310.897.7
Percentage of Assets2.51.01.42.60.4
Percentage of Assets dow:TheDowChemicalCompanyDomain2.51.01.42.60.4

Accrued Income Taxes Current

us-gaap:AccruedIncomeTaxesCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value468522490370699791
Percentage of AccruedIncomeTaxesCurrent100.0100.0100.0100.0100.0100.0
Percentage of Assets0.80.90.80.60.91.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value468522490370557
Percentage of AccruedIncomeTaxesCurrent100.0100.0100.0100.070.4
Percentage of Assets0.80.90.80.60.7
Percentage of Assets dow:TheDowChemicalCompanyDomain0.80.90.80.60.7

Long Term Debt

us-gaap:LongTermDebt



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value166971641017591174521952919594
Percentage of LongTermDebt100.0100.0100.0100.0100.0100.0
Percentage of Assets27.527.127.126.924.525.3

us-gaap:DebtInstrument, dei:LegalEntity

dow:TotalProjectFinancing, dow:SadaraChemicalCompany



Period End2020-03-312019-12-312019-09-302018-12-31
Value10800108001120011700
Percentage of LongTermDebt64.765.863.759.7
Percentage of Assets17.817.817.215.1
Percentage of Assets dow:TotalProjectFinancing dow:SadaraChemicalCompany0.00.00.00.0

Deferred Tax Liabilities Noncurrent

Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value9832100838447867491039226
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0
Percentage of Assets16.216.713.013.411.411.9

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value983210083844786748926
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent100.0100.0100.0100.096.7
Percentage of Assets16.216.713.013.411.5
Percentage of Assets dow:TheDowChemicalCompanyDomain16.216.713.013.410.7

Minority Interest

us-gaap:MinorityInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value555553587589118011381181115211901186
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.90.90.90.91.51.50.00.00.00.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302018-12-312017-12-31
Value55555358758911381186
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0
Percentage of Assets0.90.90.90.91.50.0
Percentage of Assets dow:TheDowChemicalCompanyDomain0.90.90.90.91.40.0

us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value5555535875891180113811811152119011861242
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets0.90.90.90.91.51.50.00.00.00.00.0
Percentage of Assets us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.0

Other Liabilities Noncurrent

us-gaap:OtherLiabilitiesNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value693765476888556359755368
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0
Percentage of Assets11.410.810.68.67.56.9

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value65556174633549974709
Percentage of OtherLiabilitiesNoncurrent94.594.392.089.887.7
Percentage of Assets10.810.29.87.76.1
Percentage of Assets dow:TheDowChemicalCompanyDomain10.810.29.87.75.6

us-gaap:ConsolidatedEntities

us-gaap:VariableInterestEntityPrimaryBeneficiary



Period End2020-03-312019-12-31
Value1921
Percentage of OtherLiabilitiesNoncurrent0.30.3
Percentage of Assets0.00.0
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary4.84.8

Stockholders Equity

us-gaap:StockholdersEquity



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value12906135411739917911269662683132774325212678131515
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets21.322.426.827.633.834.70.00.00.00.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value136731430917780176803266832483327743252131515
Percentage of StockholdersEquity105.9105.7102.298.7121.1121.1100.0100.0100.0
Percentage of Assets22.523.627.427.241.042.00.00.00.0
Percentage of Assets dow:TheDowChemicalCompanyDomain22.623.727.427.30.038.80.00.00.0

Common Stock Value

us-gaap:CommonStockValue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value887700
Percentage of CommonStockValue100.0100.0100.0100.00.00.0
Percentage of Assets0.00.00.00.00.00.0

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value167631704519873201102970129808
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0
Percentage of Assets27.628.230.631.037.238.5

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value1690517313198491957535460
Percentage of RetainedEarningsAccumulatedDeficit100.8101.699.997.3119.0
Percentage of Assets27.928.630.630.245.8
Percentage of Assets dow:TheDowChemicalCompanyDomain27.928.730.630.342.4

Treasury Stock Value

us-gaap:TreasuryStockValue



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value6255004063050
Percentage of TreasuryStockValue100.0100.0100.0100.00.0
Percentage of Assets1.00.80.60.50.0

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value-10529-10246-9219-8988-9783-9885-9146-9387-8591
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-17.3-16.9-14.2-13.9-12.3-12.80.00.00.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value-10529-10246-9219-8988-9885
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0
Percentage of Assets-17.3-16.9-14.2-13.9-12.8
Percentage of Assets dow:TheDowChemicalCompanyDomain-17.4-17.0-14.2-13.9-11.8

us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value-8639-8781-7527-7635-7824-7965-7552-7675-6872-6998-7389
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax82.085.781.684.980.080.682.681.80.081.50.0
Percentage of Assets-14.2-14.5-11.6-11.8-9.8-10.30.00.00.00.00.0
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value-556-394-469-335-131-56201-7-103-109-95
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax5.33.85.13.71.30.6-2.20.10.01.30.0
Percentage of Assets-0.9-0.7-0.7-0.5-0.2-0.10.00.00.00.00.0
Percentage of Assets us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312018-01-012017-12-312016-12-31
Value-3664604916-51-15-23-8171743
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax0.3-0.6-0.7-0.5-0.20.50.20.20.00.0-0.20.0
Percentage of Assets-0.10.10.10.10.0-0.10.00.00.00.00.00.0
Percentage of Assets us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedTranslationAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value-1298-1135-1283-1067-1844-1813-1780-1682-1105-1481-2381
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax12.311.113.911.918.818.319.517.90.017.20.0
Percentage of Assets-2.1-1.9-2.0-1.6-2.3-2.30.00.00.00.00.0
Percentage of Assets us-gaap:AccumulatedTranslationAdjustment0.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value123919501724830142617307311951-158
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax12.719.116.07.513.014.55.815.3-1.3

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value12391940181494213811730731
Percentage of NetCashProvidedByUsedInOperatingActivities100.099.5105.2113.596.8100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax12.719.016.98.612.614.55.8
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax dow:TheDowChemicalCompanyDomain12.719.016.98.612.614.55.8

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-153-597-715-394-486-885-858-360-92
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax-1.6-5.9-6.6-3.6-4.4-7.4-6.8-2.8-0.8

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-153-597-715-382-498-885-858
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.097.0102.5100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax-1.6-5.9-6.6-3.5-4.5-7.4-6.8
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax dow:TheDowChemicalCompanyDomain-1.6-5.9-6.6-3.5-4.5-7.4-6.8

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value265-1839-589-1000-667-1483-1309-1759-853
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax2.7-18.0-5.5-9.1-6.1-12.4-10.4-13.8-7.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value265-1829-679-1101-633-1483-1309
Percentage of NetCashProvidedByUsedInFinancingActivities100.099.5115.3110.194.9100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax2.7-17.9-6.3-10.0-5.8-12.4-10.4
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax dow:TheDowChemicalCompanyDomain2.7-17.9-6.3-10.0-5.8-12.4-10.4

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value123919501724830142617307311951-158
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax12.719.116.07.513.014.55.815.3-1.3

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value12391940181494213811730731
Percentage of NetCashProvidedByUsedInOperatingActivities100.099.5105.2113.596.8100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax12.719.016.98.612.614.55.8
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax dow:TheDowChemicalCompanyDomain12.719.016.98.612.614.55.8

Net Income Loss

us-gaap:NetIncomeLoss



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value23933375541101313331342
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax2.43.10.74.98.010.411.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value23931020255610131333
Percentage of NetIncomeLoss100.093.1269.3102.8100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax2.42.91.85.18.010.4
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax dow:TheDowChemicalCompanyDomain2.42.91.85.18.010.4

Profit Loss

us-gaap:ProfitLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value258-231034790586923104913641377
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax2.6-22.63.20.85.37.78.310.711.3

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value258-229232421760192310491364
Percentage of ProfitLoss100.099.293.4241.1102.6100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax2.6-22.53.02.05.57.78.310.7
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax dow:TheDowChemicalCompanyDomain2.6-22.53.02.05.57.78.310.7

Depreciation Depletion And Amortization

us-gaap:DepreciationDepletionAndAmortization



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value724713739646840726732614837
Percentage of DepreciationDepletionAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value724713739743743726732
Percentage of DepreciationDepletionAndAmortization100.0100.0100.0115.088.5100.0100.0

Increase Decrease In Other Operating Capital Net

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value2541301-108-7181111870176-1999684
Percentage of IncreaseDecreaseInOtherOperatingCapitalNet100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-256-130100486274-408-176
Percentage of IncreaseDecreaseInOtherOperatingCapitalNet-100.8-10.0-92.6-67.7246.8-21.8-100.0

Increase Decrease In Inventories

us-gaap:IncreaseDecreaseInInventories



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-111-1151425-2082661979-208-21511239
Percentage of IncreaseDecreaseInInventories100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value111-185-425-10547-261208
Percentage of IncreaseDecreaseInInventories-100.016.1-100.050.517.7-13.2-100.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-153-597-715-394-486-885-858-360-92
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax-1.6-5.9-6.6-3.6-4.4-7.4-6.8-2.8-0.8

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-153-597-715-382-498-885-858
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.097.0102.5100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax-1.6-5.9-6.6-3.5-4.5-7.4-6.8
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax dow:TheDowChemicalCompanyDomain-1.6-5.9-6.6-3.5-4.5-7.4-6.8

Payments To Acquire Investments

us-gaap:PaymentsToAcquireInvestments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value128115391220173229401
Percentage of PaymentsToAcquireInvestments100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value128115391220173229401
Percentage of PaymentsToAcquireInvestments100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value265-1839-589-1000-667-1483-1309-1759-853
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax2.7-18.0-5.5-9.1-6.1-12.4-10.4-13.8-7.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value265-1829-679-1101-633-1483-1309
Percentage of NetCashProvidedByUsedInFinancingActivities100.099.5115.3110.194.9100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax2.7-17.9-6.3-10.0-5.8-12.4-10.4
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax dow:TheDowChemicalCompanyDomain2.7-17.9-6.3-10.0-5.8-12.4-10.4

Payments Of Dividends

us-gaap:PaymentsOfDividends



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0000535553104810531057
Percentage of PaymentsOfDividends0.00.00.00.0100.0100.0100.0100.0100.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-09-302019-06-302019-03-312018-09-30
Value0005351048
Percentage of PaymentsOfDividends0.00.00.0100.0100.0

Payments Of Dividends

us-gaap:PaymentsOfDividends



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0000535553104810531057
Percentage of PaymentsOfDividends0.00.00.00.0100.0100.0100.0100.0100.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-09-302019-06-302019-03-312018-09-30
Value0005351048
Percentage of PaymentsOfDividends0.00.00.0100.0100.0

Payments For Repurchase Of Common Stock

us-gaap:PaymentsForRepurchaseOfCommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value12594101305000
Percentage of PaymentsForRepurchaseOfCommonStock100.0100.0100.0100.00.00.00.0

Debt Instrument Interest Rate Stated Percentage

us-gaap:DebtInstrument

us-gaap:DebtInstrumentInterestRateStatedPercentage

dow:A050PercentNotesDue2027



Period End2020-03-31
Value0.005
Percentage of DebtInstrumentInterestRateStatedPercentage100.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.0
Percentage of LongTermDebtAndCapitalLeaseObligations dow:A050PercentNotesDue20270.0

dow:A1125PercentNotesDue2032



Period End2020-03-31
Value0.01125
Percentage of DebtInstrumentInterestRateStatedPercentage225.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.0
Percentage of LongTermDebtAndCapitalLeaseObligations dow:A1125PercentNotesDue20320.0

dow:A1875PercentNotesDue2040



Period End2020-03-31
Value0.01875
Percentage of DebtInstrumentInterestRateStatedPercentage375.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.0
Percentage of LongTermDebtAndCapitalLeaseObligations dow:A1875PercentNotesDue20400.0

dow:A30PercentNotesDue2022



Period End2020-03-31
Value0.03
Percentage of DebtInstrumentInterestRateStatedPercentage600.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.0
Percentage of LongTermDebtAndCapitalLeaseObligations dow:A30PercentNotesDue20220.0

dow:EurosNotes



Period End2020-03-31
Value0.01
Percentage of DebtInstrumentInterestRateStatedPercentage200.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.0
Percentage of LongTermDebtAndCapitalLeaseObligations dow:EurosNotes0.0

Effective Income Tax Rate Continuing Operations

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

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod

dow:PerformanceStockUnitsPSUs



Period End2020-03-312019-06-30
Value11
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod100.0100.0

us-gaap:RestrictedStockUnitsRSU



Period End2020-03-312019-06-30
Value21
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod142.9150.0

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 End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value194220722130218325840
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.00.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value19422072213021830
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.00.0

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value36452380283924833012270934424868520462076624
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312016-12-31
Value3645238028392483294727643442486862086624
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.097.8102.0100.0100.0100.0100.0

Proceeds From Repayments Of Short Term Debt

us-gaap:ProceedsFromRepaymentsOfShortTermDebt



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value838158-13178-16-60380
Percentage of ProceedsFromRepaymentsOfShortTermDebt100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value838158-13178-16-60380
Percentage of ProceedsFromRepaymentsOfShortTermDebt100.0100.0100.0100.0100.0100.0100.0

dei:EntityListingParValuePerShare



Period End2020-03-31
Value0.01
Percentage of EntityListingParValuePerShare100.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-31
Value0.01
Percentage of EntityListingParValuePerShare100.0

dow:BusinessCombinationIntegrationAndSeparationRelatedCosts



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value6599164348408380313262202
Percentage of BusinessCombinationIntegrationAndSeparationRelatedCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value6599164324452380313262
Percentage of BusinessCombinationIntegrationAndSeparationRelatedCosts100.0100.0100.093.1110.8100.0100.0100.0

dow:CashReclassifiedAsHeldForSale



Period End2020-03-312019-03-31
Value0-97
Percentage of CashReclassifiedAsHeldForSale0.0100.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-03-31
Value0-97
Percentage of CashReclassifiedAsHeldForSale0.0100.0

dow:Cashreceiptrelatedtodivestiture



Period End2020-03-31
Value6
Percentage of Cashreceiptrelatedtodivestiture100.0

us-gaap:StatementOperatingActivitiesSegment

us-gaap:SegmentContinuingOperations



Period End2020-03-31
Value3
Percentage of Cashreceiptrelatedtodivestiture50.0

us-gaap:SegmentDiscontinuedOperations



Period End2020-03-31
Value3
Percentage of Cashreceiptrelatedtodivestiture50.0

us-gaap:RetirementPlanType

dow:DefinedBenefitPlanNetPeriodicBenefitCostCreditIncludingDiscontinuedOperations

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value999610988
Percentage of DefinedBenefitPlanNetPeriodicBenefitCostCreditIncludingDiscontinuedOperations100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value644344166253108109
Percentage of DefinedBenefitPlanNetPeriodicBenefitCostCreditIncludingDiscontinuedOperations711.1477.8488.9266.7620.0588.91350.01362.5

dow:DistributionsAndLoanRepaymentsFromNonconsolidatedAffiliates



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value68900000
Percentage of DistributionsAndLoanRepaymentsFromNonconsolidatedAffiliates100.0100.00.00.00.00.00.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value68900000
Percentage of DistributionsAndLoanRepaymentsFromNonconsolidatedAffiliates100.0100.00.00.00.00.00.0

dow:EquitySecuritiesNetUnrealizedGainLoss



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value11152-19
Percentage of EquitySecuritiesNetUnrealizedGainLoss100.0100.0100.0100.0100.0100.0100.0

dow:FinanceLeaseCost



Period End2020-03-312019-09-302019-06-302019-03-31
Value19201812
Percentage of FinanceLeaseCost100.0100.0100.0100.0

dow:InvestmentsInAndLoansToNonconsolidatedAffiliates



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value114305105228079
Percentage of InvestmentsInAndLoansToNonconsolidatedAffiliates100.0100.0100.0100.00.0100.0100.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value114305105228079
Percentage of InvestmentsInAndLoansToNonconsolidatedAffiliates100.0100.0100.0100.00.0100.0100.0

us-gaap:StatementEquityComponents

dow:NoncontrollingInterestIncreaseDecreaseFromOtherActivity

us-gaap:NoncontrollingInterest



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value0-20-102
Percentage of NoncontrollingInterestIncreaseDecreaseFromOtherActivity0.0100.00.0100.00.0100.0

dow:OperatingEBIT



Period End2020-03-312019-09-302019-06-30
Value84311171059
Percentage of OperatingEBIT100.0100.0100.0

us-gaap:StatementBusinessSegments

dow:IndustrialIntermediatesInfrastructure



Period End2020-03-312019-09-302019-06-30
Value175193154
Percentage of OperatingEBIT20.817.314.5

dow:PackagingSpecialtyPlastics



Period End2020-03-312019-09-302019-06-30
Value580798768
Percentage of OperatingEBIT68.871.472.5

dow:PerformanceMaterialsCoatings



Period End2020-03-312019-09-302019-06-30
Value162200214
Percentage of OperatingEBIT19.217.920.2

us-gaap:Corporate



Period End2020-03-312019-09-302019-06-30
Value-74-74-77
Percentage of OperatingEBIT-8.8-6.6-7.3

us-gaap:StatementEquityComponents

dow:StockIssuedDuringPeriodValueNewIssuesandTreasuryStockReissued

us-gaap:AdditionalPaidInCapital



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value1653510000
Percentage of StockIssuedDuringPeriodValueNewIssuesandTreasuryStockReissued100.0100.0100.0100.00.00.00.00.0

us-gaap:StatementEquityComponents

dow:StockIssuedDuringPeriodValueParentCompanyStockDWDP

us-gaap:AdditionalPaidInCapital



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value00002862122
Percentage of StockIssuedDuringPeriodValueParentCompanyStockDWDP0.00.00.00.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents, dei:LegalEntity

us-gaap:AdditionalPaidInCapital, dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-09-302019-03-312018-09-30
Value002821
Percentage of StockIssuedDuringPeriodValueParentCompanyStockDWDP0.00.0100.0100.0

us-gaap:StatementEquityComponents, dei:LegalEntity

dow:StockIssuedDuringPeriodValueParentCompanyStockDowInc

us-gaap:AdditionalPaidInCapital, dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-09-302019-03-312018-09-30
Value16500
Percentage of StockIssuedDuringPeriodValueParentCompanyStockDowInc100.0100.00.00.0

dow:TransferofBusinessUnderCommonControl



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value0-3870-28192736516-61
Percentage of TransferofBusinessUnderCommonControl0.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value00097-36-3661
Percentage of TransferofBusinessUnderCommonControl0.0-0.0-0.05.0-100.0-7.0-100.0

us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0-29667501484635-3865237
Percentage of TransferofBusinessUnderCommonControl0.0766.6-178.6770.497.2-74.8-85.20.0

us-gaap:StatementEquityComponents, dei:LegalEntity

us-gaap:RetainedEarnings, dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value0-320313235-38652
Percentage of TransferofBusinessUnderCommonControl0.0827.7-114.397.2-74.8-85.2

us-gaap:StatementEquityComponents

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

dow:UnearnedEsopShares



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value104662956539
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AdditionalPaidInCapital



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value2933556483837181142
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue290.0825.0916.71066.7286.21660.01183.31620.0364.1

us-gaap:StatementEquityComponents, dei:LegalEntity

dow:UnearnedEsopShares, dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value10462956
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0

us-gaap:AdditionalPaidInCapital, dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value293355838371
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue290.0825.0916.7286.21660.01183.3

us-gaap:AmortizationOfIntangibleAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value10099100104154116117118159
Percentage of AmortizationOfIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value10099100104116116117118
Percentage of AmortizationOfIntangibleAssets100.0100.0100.0100.075.3100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:ComputerSoftwareIntangibleAsset



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value242623232525232323
Percentage of AmortizationOfIntangibleAssets24.026.323.022.116.221.619.719.514.5

us-gaap:OtherIntangibleAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value10099100104154116117118159
Percentage of AmortizationOfIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value15126000
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount100.0100.0100.00.00.00.0

us-gaap:FairValueByAssetClass, us-gaap:StatementBusinessSegments

us-gaap:AssetImpairmentCharges

us-gaap:ManufacturingFacility, dow:PackagingSpecialtyPlastics



Period End2020-03-312019-09-302019-06-302018-12-312018-09-302018-06-302017-12-31
Value6762533622
Percentage of AssetImpairmentCharges100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesGrossRealizedGains



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1619101662487
Percentage of AvailableForSaleSecuritiesGrossRealizedGains100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesGrossRealizedLosses



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value744554899
Percentage of AvailableForSaleSecuritiesGrossRealizedLosses100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BusinessCombinationIntegrationRelatedCosts



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value6599164348402344289234
Percentage of BusinessCombinationIntegrationRelatedCosts100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementBusinessSegments

us-gaap:Corporate



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value6599164348402344289234
Percentage of BusinessCombinationIntegrationRelatedCosts100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1265-459356-584303-678-1426-337-1003
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-09-302019-06-302019-03-312018-09-30
Value1265356-464183-1426
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.079.560.4100.0

us-gaap:StatementEquityComponents

us-gaap:CashDividendsPaidToParentCompany

us-gaap:RetainedEarnings



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0107000-5356869-1048-1053
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Period End2020-03-312019-03-31
Value0-535
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Period End2020-03-312019-03-31
Value-6430
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Period End2020-03-312019-03-31
Value6430
Percentage of CashDividendsPaidToParentCompanyByConsolidatedSubsidiaries100.00.0

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value0000-18-9-1
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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value0000-18-9-1
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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value0000-34-166-91
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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value0000-34-166-91
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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value330-66-85338341528
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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value00258338341528
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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
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Period End2020-03-312019-03-31
Value1015
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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3545-1045659553075
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Value-57-82-8326-89-434-274-67
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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-57-82-839-72-434-2
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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value245566666
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Value-192-148-147-147-132-133-168-170-171
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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-5-4-5-5-6-6-6-6-6
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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value414421420421417433401404406
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value91112121412111111
Percentage of DefinedBenefitPlanInterestCost100.0100.0100.0100.0100.0100.0100.0100.0100.0

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value192226227227241235216217218
Percentage of DefinedBenefitPlanInterestCost2133.32054.51891.71891.71721.41958.31963.61972.71981.8

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value000021262525
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost0.00.00.00.0100.0100.0100.0100.0

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value6443441662278384110
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost0.00.00.00.0295.2103.8332.0336.00.0

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value222223333
Percentage of DefinedBenefitPlanServiceCost100.0100.0100.0100.0100.0100.0100.0100.0100.0

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value99949595112124131132133
Percentage of DefinedBenefitPlanServiceCost4950.04700.04750.04750.05600.04133.34366.74400.04433.3

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value515535540538598531549540621
Percentage of Depreciation100.0100.0100.0100.0100.0100.0100.0100.0100.0

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Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value515540538543549540
Percentage of Depreciation100.0100.0100.090.8100.0100.0

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Period End2020-03-312019-03-31
Value17-11
Percentage of DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet100.0100.0

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Period End2020-03-312019-03-31
Value11-12
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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-1918213831102682-17
Percentage of DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet-111.80.00.00.0-281.80.00.00.00.0

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Period End2020-03-312019-03-31
Value-60
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Period End2020-03-312019-03-31
Value-14-44
Percentage of DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet-82.4400.0

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Period End2020-03-312019-03-31
Value1425
Percentage of DerivativesUsedInNetInvestmentHedgeGainLossReclassifiedToEarningsNetOfTax100.0100.0

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0.00.00.00.00.580.560.450.73
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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0.00.00.00.00.580.560.450.73
Percentage of DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare0.00.00.00.0100.0100.0100.0100.0

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-5182583-516-5175350001057
Percentage of DividendsCommonStock100.0100.0100.0100.0100.00.00.00.0100.0

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-8627-64-2030-4010-169100
Percentage of EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-8627-64-2030-4010
Percentage of EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0

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Period End2020-03-312019-09-302019-06-302019-03-31
Value6676
Percentage of FinanceLeaseInterestExpense100.0100.0100.0100.0

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Period End2020-03-312019-03-31
Value83
Percentage of FinanceLeasePrincipalPayments100.0100.0

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Period End2020-03-312019-09-302019-06-302019-03-31
Value1314116
Percentage of FinanceLeaseRightOfUseAssetAmortization100.0100.0100.0100.0

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-12129-21-15-12622-5933
Percentage of GainLossOnDispositionOfAssets1100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value12332125214-2
Percentage of GainLossOnDispositionOfAssets1-100.025.6-100.0-166.7-16.722.6-100.0

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Period End2020-03-312019-03-31
Value-110
Percentage of GainLossOnOilAndGasHedgingActivity100.00.0

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Period End2020-03-312019-03-31
Value48
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Period End2020-03-312019-03-31
Value240
Percentage of GainLossOnOilAndGasHedgingActivity-218.20.0

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us-gaap:DesignatedAsHedgingInstrument



Period End2020-03-312019-03-31
Value3133
Percentage of GainLossOnOilAndGasHedgingActivity-281.80.0

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Period End2020-03-312019-12-312019-09-302019-06-302018-12-312018-09-30
Value-86-580-44-48-6
Percentage of GainsLossesOnExtinguishmentOfDebt100.0100.00.0100.0100.0100.0

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Period End2020-03-31
Value85
Percentage of GainsLossesOnExtinguishmentOfDebt-98.8

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Period End2020-03-31
Value1000000.0
Percentage of GainsLossesOnExtinguishmentOfDebt-1.2

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Period End2020-03-312019-12-312019-09-302019-06-302018-09-30
Value-86-580-44-6
Percentage of GainsLossesOnExtinguishmentOfDebt100.0100.00.0100.0100.0

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Period End2020-03-312019-12-312019-09-30
Value-1651-63
Percentage of GoodwillForeignCurrencyTranslationGainLoss100.0100.0100.0

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Period End2020-03-312019-12-312019-09-30
Value-111-4
Percentage of GoodwillForeignCurrencyTranslationGainLoss6.221.66.3

dow:PackagingSpecialtyPlastics



Period End2020-03-312019-12-312019-09-30
Value-124-12
Percentage of GoodwillForeignCurrencyTranslationGainLoss6.247.119.0

dow:PerformanceMaterialsCoatings



Period End2020-03-312019-12-312019-09-30
Value-1416-47
Percentage of GoodwillForeignCurrencyTranslationGainLoss87.531.474.6

us-gaap:IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value0001346
Percentage of IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest0.00.00.0100.0100.0100.0

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0000-13-8-4-6
Percentage of IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest0.00.00.00.0-100.00.0-100.0-100.0

us-gaap:IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0000445432335554514
Percentage of IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity0.00.00.00.0100.0100.0100.0100.0100.0

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0000445432335554
Percentage of IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity0.00.00.00.0100.0100.0100.0100.0

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-89-21-44-151326135193243
Percentage of IncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-89-21-44-15-1426135193
Percentage of IncomeLossFromEquityMethodInvestments100.0100.0100.0100.0-107.7100.0100.0100.0

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dow:IndustrialIntermediatesInfrastructure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-76-45-70-78-48-155496
Percentage of IncomeLossFromEquityMethodInvestments85.4214.3159.1520.0-369.2-57.740.049.7

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value5272374383783108
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dow:PerformanceMaterialsCoatings



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value12210031
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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-19-51-12-44-5-12
Percentage of IncomeLossFromEquityMethodInvestments21.323.8-2.380.0-30.815.4-3.7-6.2

us-gaap:IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value134-2041471630-750-189-115483-287
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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-134-187-47-105-775-27115
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us-gaap:IncreaseDecreaseInAccountsAndNotesReceivable



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value128-2247755181582277-307-26391524
Percentage of IncreaseDecreaseInAccountsAndNotesReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-128-259-754-155-85-567307
Percentage of IncreaseDecreaseInAccountsAndNotesReceivable-100.011.5-99.9-85.6-146.6-24.9-100.0

us-gaap:IncreaseDecreaseInAccountsPayable



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-314-22-47618-468-666154476823
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dei:LegalEntity

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-314-22-4751-452-666154
Percentage of IncreaseDecreaseInAccountsPayable100.0100.099.85.696.6100.0100.0

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value1-2350000
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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value1523192118222218
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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value1623192118222218
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Period End2020-03-312019-09-302019-06-302019-03-31
Value256294269230
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us-gaap:LitigationSettlementAmountAwardedFromOtherParty

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Period End2020-03-312019-09-182019-09-30
Value25914301430
Percentage of LitigationSettlementAmountAwardedFromOtherParty100.0100.0100.0

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us-gaap:NoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value15495982237
Percentage of MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders100.0100.0100.0100.0100.0100.0100.0100.0

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us-gaap:NoncontrollingInterest, us-gaap:SegmentDiscontinuedOperations



Period End2020-03-31
Value-7
Percentage of MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders-700.0

us-gaap:NetCashProvidedByUsedInFinancingActivitiesContinuingOperations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value265-1839-589-1034-615-1474-1308
Percentage of NetCashProvidedByUsedInFinancingActivitiesContinuingOperations100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value265-1829-679-1101-615-1474-1308
Percentage of NetCashProvidedByUsedInFinancingActivitiesContinuingOperations100.099.5115.3106.5100.0100.0100.0

us-gaap:NetCashProvidedByUsedInInvestingActivitiesContinuingOperations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-153-597-715-382-464-719-767
Percentage of NetCashProvidedByUsedInInvestingActivitiesContinuingOperations100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-153-597-715-382-464-719-767
Percentage of NetCashProvidedByUsedInInvestingActivitiesContinuingOperations100.0100.0100.0100.0100.0100.0100.0

us-gaap:NetCashProvidedByUsedInOperatingActivitiesContinuingOperations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value12361920179096010431389203
Percentage of NetCashProvidedByUsedInOperatingActivitiesContinuingOperations100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value12391940178993410431389203
Percentage of NetCashProvidedByUsedInOperatingActivitiesContinuingOperations100.2101.099.997.3100.0100.0100.0

us-gaap:NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersBasic



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value237-232533173124467682785
Percentage of NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersBasic100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NetIncomeLossFromDiscontinuedOperationsAvailableToCommonShareholdersBasic



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0000432424331548
Percentage of NetIncomeLossFromDiscontinuedOperationsAvailableToCommonShareholdersBasic0.00.00.00.0100.0100.0100.0100.0

us-gaap:NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value258-2310347906019231049
Percentage of NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value258-22923242176019231049
Percentage of NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest100.099.293.4241.1100.0100.0100.0

us-gaap:OperatingLeaseCost



Period End2020-03-312019-09-302019-06-302019-03-31
Value120134139125
Percentage of OperatingLeaseCost100.0100.0100.0100.0

us-gaap:OperatingLeasePayments



Period End2020-03-312019-03-31
Value126133
Percentage of OperatingLeasePayments100.0100.0

us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest

us-gaap:NoncontrollingInterest



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value16-56-7-5-34
Percentage of OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-1004113367-368-14-25
Percentage of OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-1004113367-368-14
Percentage of OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax

us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-17675-187-263-95-309241108
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-11820205286-486-18
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax67.026.7-10.7-19.8-90.515.52.5-16.7

us-gaap:AccumulatedTranslationAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-161159-16476-12-49-94-443
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax91.5212.087.7-28.912.615.9-39.0-410.2

us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax

us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-16666-150-217-68-26719691-16
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-9315164168-385-15-26
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax56.022.7-10.7-18.9-100.014.22.6-16.5162.5

us-gaap:AccumulatedTranslationAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-149169-19091-13-31-98-468376
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax89.8256.1126.7-41.919.111.6-50.0-514.3-2350.0

us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsTax

us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value10-937462742-45-17
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsTax100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value25-5-4-11-1810-13
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsTax250.055.6-10.8-23.9-66.723.82.2-17.6

us-gaap:AccumulatedTranslationAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value1210-2615-118-4-25
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsTax120.0-111.1-70.332.6-3.742.98.9147.1

us-gaap:OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-16275-134-204-75-2572081186
Percentage of OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-16275-134-204-75-257208118
Percentage of OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-283-1027-2312102-739241-242483
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-283-1027-2312102-739241-242
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value142-1254108106141-413123124126
Percentage of OtherComprehensiveIncomeLossNetOfTax-50.2122.1-46.85300.0138.255.951.0-51.226.1

us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-16275-134-204-75-2572081186
Percentage of OtherComprehensiveIncomeLossNetOfTax57.2-7.358.0-10200.0-73.534.886.3-48.81.2

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-1004113367-368-14-25
Percentage of OtherComprehensiveIncomeLossNetOfTax35.3-0.4-4.81650.065.74.93.35.8-5.2

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-283-1027-2312102-739241-242483
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedTranslationAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-163148-21667-31-33-98-470376
Percentage of OtherComprehensiveIncomeLossNetOfTax57.6-14.493.53350.0-30.44.5-40.7194.277.8

us-gaap:StatementEquityComponents, dei:LegalEntity

us-gaap:AccumulatedOtherComprehensiveIncome, dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value-283-1027-231102-739241
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-1421254-108-106-141413-123-124-126
Percentage of OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-1421254-108-106-141413-123-124
Percentage of OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax



Period End2020-03-312019-03-31
Value-3273
Percentage of OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax100.0100.0

us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation

us-gaap:CommodityContract, us-gaap:CashFlowHedging, us-gaap:DesignatedAsHedgingInstrument



Period End2020-03-312019-03-31
Value-8755
Percentage of OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax271.975.3

us-gaap:ForeignExchangeContract, us-gaap:NetInvestmentHedging, us-gaap:DesignatedAsHedgingInstrument



Period End2020-03-312019-03-31
Value2230
Percentage of OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax-68.841.1

us-gaap:InterestRateContract, us-gaap:CashFlowHedging, us-gaap:DesignatedAsHedgingInstrument



Period End2020-03-312019-03-31
Value0-106
Percentage of OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax-0.0-145.2

us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation, us-gaap:IncomeStatementLocation

us-gaap:ForeignExchangeContract, us-gaap:CashFlowHedging, us-gaap:DesignatedAsHedgingInstrument, us-gaap:CostOfSales



Period End2020-03-312019-03-31
Value87
Percentage of OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax-25.09.6

us-gaap:ForeignExchangeContract, us-gaap:CashFlowHedging, us-gaap:DesignatedAsHedgingInstrument, us-gaap:OtherNonoperatingIncomeExpense



Period End2020-03-312019-03-31
Value0.01000000.0
Percentage of OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax-0.01.4

us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation, us-gaap:OtherComprehensiveIncomeLocation

dow:ExcludedComponents, us-gaap:FairValueHedging, us-gaap:DesignatedAsHedgingInstrument, dow:CumulativeTranslationAdjustments



Period End2020-03-312019-03-31
Value30
Percentage of OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax-9.40.0

dow:ExcludedComponents, us-gaap:NetInvestmentHedging, us-gaap:DesignatedAsHedgingInstrument, dow:CumulativeTranslationAdjustments



Period End2020-03-312019-03-31
Value2286
Percentage of OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax-68.8117.8

us-gaap:HedgingDesignation

us-gaap:DesignatedAsHedgingInstrument



Period End2020-03-312019-03-31
Value-3273
Percentage of OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax100.0100.0

us-gaap:OtherNoncashIncomeExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value135-34128154-39-74286339-98
Percentage of OtherNoncashIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-136-56-42-82-33-88-86
Percentage of OtherNoncashIncomeExpense-100.716.4-150.0-53.284.611.9-100.0

us-gaap:OtherNonrecurringIncomeExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-247-3030-466-628-558-438-343-286
Percentage of OtherNonrecurringIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementBusinessSegments

dow:IndustrialIntermediatesInfrastructure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0-1175-1300000
Percentage of OtherNonrecurringIncomeExpense-0.038.82.8-0.0-0.0-0.0-0.0-0.0

dow:PackagingSpecialtyPlastics



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-6-389134-6-13-30-7-3
Percentage of OtherNonrecurringIncomeExpense2.412.8-28.81.02.36.82.01.0

dow:PerformanceMaterialsCoatings



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0-1044-60-220-70-35
Percentage of OtherNonrecurringIncomeExpense-0.034.512.93.5-0.01.6-0.012.2

us-gaap:Corporate



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-241-422-527-600-545-401-336-248
Percentage of OtherNonrecurringIncomeExpense97.613.9113.195.597.791.698.086.7

us-gaap:RestructuringCostAndReserve, us-gaap:RestructuringPlan

us-gaap:PaymentsForRestructuring

dow:CostsAssociatedwithExitandDisposalActivities, dow:DowDuPontCostSynergyProgram



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1460293063
Percentage of PaymentsForRestructuring100.0100.0100.00.0100.0100.00.0100.0100.0

us-gaap:EmployeeSeverance, dow:DowDuPontCostSynergyProgram



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value425277719739565448
Percentage of PaymentsForRestructuring4200.01300.01283.30.0334.51300.00.0900.01600.0

us-gaap:RestructuringPlan

dow:DowDuPontCostSynergyProgram



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4356837112642566051
Percentage of PaymentsForRestructuring4300.01400.01383.30.0434.51400.00.01000.01700.0

us-gaap:PaymentsOfDividendsMinorityInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1619-299421524
Percentage of PaymentsOfDividendsMinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value161952942
Percentage of PaymentsOfDividendsMinorityInterest100.0100.0100.0-250.022.2100.0100.0

us-gaap:PaymentsOfFinancingCosts



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value93585560700
Percentage of PaymentsOfFinancingCosts100.0100.0100.0100.00.0100.00.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value93585560700
Percentage of PaymentsOfFinancingCosts100.0100.0100.0100.00.0100.00.0

us-gaap:PaymentsOfOrdinaryDividends



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value518517516517000
Percentage of PaymentsOfOrdinaryDividends100.0100.0100.0100.00.00.00.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-03-31
Value6430
Percentage of PaymentsOfOrdinaryDividends124.10.0

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value2664-45416-777
Percentage of PaymentsRelatedToTaxWithholdingForShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value266454516
Percentage of PaymentsRelatedToTaxWithholdingForShareBasedCompensation100.0100.0100.0-125.083.3100.0100.0

us-gaap:PaymentsToAcquireProductiveAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value395577472470514646577489423
Percentage of PaymentsToAcquireProductiveAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value395577472470442646577489
Percentage of PaymentsToAcquireProductiveAssets100.0100.0100.0100.086.0100.0100.0100.0

us-gaap:PaymentsToExploreAndDevelopOilAndGasProperties



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value5523232532361828
Percentage of PaymentsToExploreAndDevelopOilAndGasProperties100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value552323253236
Percentage of PaymentsToExploreAndDevelopOilAndGasProperties100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionAndOtherPostretirementBenefitContributions



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value63555449103118116065308
Percentage of PensionAndOtherPostretirementBenefitContributions100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value63555453991181160
Percentage of PensionAndOtherPostretirementBenefitContributions100.0100.0100.0108.296.1100.0100.0

us-gaap:PensionAndOtherPostretirementBenefitExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value644344-562278359110
Percentage of PensionAndOtherPostretirementBenefitExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value64434416412783
Percentage of PensionAndOtherPostretirementBenefitExpense100.0100.0100.0-320.066.1100.0100.0

us-gaap:ProceedsFromIssuanceOfCommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value165456286212263
Percentage of ProceedsFromIssuanceOfCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value16545628621
Percentage of ProceedsFromIssuanceOfCommonStock100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value24491411362010019990
Percentage of ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet100.0100.0100.0100.00.0100.00.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value24491411362010019990
Percentage of ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet100.0100.0100.0100.00.0100.00.0

us-gaap:ProceedsFromSaleAndMaturityOfOtherInvestments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value472279238559176189274
Percentage of ProceedsFromSaleAndMaturityOfOtherInvestments100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value472279238559176189274
Percentage of ProceedsFromSaleAndMaturityOfOtherInvestments100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value248234370375159173255277348
Percentage of ProceedsFromSaleOfAvailableForSaleSecuritiesDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value11373890321
Percentage of ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets100.0100.0100.0100.00.0100.0100.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value11373890321
Percentage of ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets100.0100.0100.0100.00.0100.0100.0

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us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-9-15-6-11-1241
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value18591139108166126156158154
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax-2055.6-606.7-2316.7-981.8-16600.06300.03900.015800.00.0

us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value7142017-714163227
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax-77.8-93.3-333.3-154.5700.0700.0400.03200.00.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-7-11-5-8-1231
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedTranslationAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-14-21-26-24-18-20-2
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax200.0190.9520.0300.01800.0-100.00.0-200.0

us-gaap:StatementEquityComponents

us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value491613-710122722
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax-57.1-81.8-320.0-162.5700.0500.0400.02700.00.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationFromAociCurrentPeriodTax

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value241300-10
Percentage of ReclassificationFromAociCurrentPeriodTax100.0100.0100.0100.00.00.0100.00.0

us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-43-35-31-26-25-44-33-34-28
Percentage of ReclassificationFromAociCurrentPeriodTax-2150.0-875.0-3100.0-866.70.00.03300.00.00.0

us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-3-5-4-40-4-4-5-5
Percentage of ReclassificationFromAociCurrentPeriodTax-150.0-125.0-400.0-133.30.00.0400.00.00.0

us-gaap:RepaymentsOfLongTermDebtAndCapitalSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value2275129050414180219529151454
Percentage of RepaymentsOfLongTermDebtAndCapitalSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value22751290504140812195291
Percentage of RepaymentsOfLongTermDebtAndCapitalSecurities100.0100.0100.0100.0101.2100.0100.0

us-gaap:DebtInstrument

us-gaap:RepaymentsOfNotesPayable

dow:A30PercentNotesDue2022



Period End2020-03-31
Value1250
Percentage of RepaymentsOfNotesPayable100.0

dow:InterNotesRedeemedVariousMaturities



Period End2020-03-31
Value200
Percentage of RepaymentsOfNotesPayable16.0

dow:InterNotesredeemed



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value62537872566
Percentage of RepaymentsOfNotesPayable5.00.00.00.00.00.00.0

us-gaap:ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value179173194208190178193221
Percentage of ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value179173194208190178193221
Percentage of ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestructuringCharges



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value96285114765156464832
Percentage of RestructuringCharges100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementBusinessSegments

dow:IndustrialIntermediatesInfrastructure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value01170500000
Percentage of RestructuringCharges0.041.03.40.00.00.00.00.0

dow:PackagingSpecialtyPlastics



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value6389316133073
Percentage of RestructuringCharges6.213.621.19.28.365.214.69.4

dow:PerformanceMaterialsCoatings



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value01044102207015
Percentage of RestructuringCharges0.036.66.833.80.015.20.046.9

us-gaap:Corporate



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value902481013714394114
Percentage of RestructuringCharges93.88.768.756.991.719.685.443.8

us-gaap:RestructuringCostsAndAssetImpairmentCharges



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value962851147-112324648-38165
Percentage of RestructuringCostsAndAssetImpairmentCharges100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value962851147651564648
Percentage of RestructuringCostsAndAssetImpairmentCharges100.0100.0100.0-590.967.2100.0100.0

us-gaap:RestructuringSettlementAndImpairmentProvisions



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value96285114765232464840165
Percentage of RestructuringSettlementAndImpairmentProvisions100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value96285114765156464840
Percentage of RestructuringSettlementAndImpairmentProvisions100.0100.0100.0100.067.2100.0100.0100.0

us-gaap:RestructuringCostAndReserve, us-gaap:RestructuringPlan

dow:Assetwritedownsandwriteoffs, dow:DowDuPontCostSynergyProgram



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0335291001341348
Percentage of RestructuringSettlementAndImpairmentProvisions0.01.23.444.643.128.38.332.529.1

dow:CostsAssociatedwithExitandDisposalActivities, dow:DowDuPontCostSynergyProgram



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value00555200011
Percentage of RestructuringSettlementAndImpairmentProvisions0.00.03.47.722.40.00.00.06.7

us-gaap:EmployeeSeverance, dow:DowDuPontCostSynergyProgram



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value90046257294317104
Percentage of RestructuringSettlementAndImpairmentProvisions93.80.031.338.531.019.689.642.563.0

us-gaap:RestructuringCostAndReserve, us-gaap:RestructuringPlan, us-gaap:StatementBusinessSegments

dow:Assetwritedownsandwriteoffs, dow:DowDuPontCostSynergyProgram, us-gaap:Corporate



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value026477600133
Percentage of RestructuringSettlementAndImpairmentProvisions0.00.92.710.832.80.00.032.51.8

dow:CostsAssociatedwithExitandDisposalActivities, dow:DowDuPontCostSynergyProgram, us-gaap:Corporate



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0005150000
Percentage of RestructuringSettlementAndImpairmentProvisions0.00.00.07.76.50.00.00.00.0

us-gaap:EmployeeSeverance, dow:DowDuPontCostSynergyProgram, us-gaap:Corporate



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value9004625529431768
Percentage of RestructuringSettlementAndImpairmentProvisions93.80.031.338.522.419.689.642.541.2

us-gaap:RestructuringPlan

dow:DowDuPontCostSynergyProgram



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value90335659224224730163
Percentage of RestructuringSettlementAndImpairmentProvisions93.81.238.190.896.647.897.975.098.8

us-gaap:RestructuringPlan, us-gaap:StatementBusinessSegments

dow:DowDuPontCostSynergyProgram, us-gaap:Corporate



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value902650371439433071
Percentage of RestructuringSettlementAndImpairmentProvisions93.80.934.056.961.619.689.675.043.0

us-gaap:RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability



Period End2020-03-31
Value34
Percentage of RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability100.0

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability



Period End2020-03-31
Value38
Percentage of RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability100.0

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue

dow:PerformanceStockUnitsPSUs



Period End2020-03-312019-06-30
Value48.3557.58
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue100.0100.0

us-gaap:RestrictedStockUnitsRSU



Period End2020-03-312019-06-30
Value48.054.85
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue99.395.3

us-gaap:ShortTermLeaseCost



Period End2020-03-312019-09-302019-06-302019-03-31
Value54515050
Percentage of ShortTermLeaseCost100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:StockholdersEquityOther

us-gaap:RetainedEarnings



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-325-4-52321-76
Percentage of StockholdersEquityOther100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents, dei:LegalEntity

us-gaap:RetainedEarnings, dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value4-2542-32-1
Percentage of StockholdersEquityOther-133.3-100.0-100.0100.0-100.0-100.0

us-gaap:AdjustmentsForNewAccountingPronouncements, us-gaap:StatementEquityComponents

us-gaap:StockholdersEquityPeriodIncreaseDecrease

us-gaap:NewAccountingPronouncement, us-gaap:RetainedEarnings



Period End2020-03-312019-03-31
Value0-111
Percentage of StockholdersEquityPeriodIncreaseDecrease0.0100.0

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

us-gaap:NewAccountingPronouncement, us-gaap:RetainedEarnings, dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-03-31
Value0-111
Percentage of StockholdersEquityPeriodIncreaseDecrease0.0100.0

us-gaap:SubleaseIncome



Period End2020-03-312019-09-302019-06-302019-03-31
Value1000000.00.01000000.01000000.0
Percentage of SubleaseIncome100.00.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:TreasuryStockValueAcquiredCostMethod

us-gaap:TreasuryStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-125906-101-3050000
Percentage of TreasuryStockValueAcquiredCostMethod100.0100.0100.0100.00.00.00.00.0

us-gaap:UndistributedContinuingOperationEarningsLossAllocationToParticipatingSecuritiesBasic



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value2-10220000
Percentage of UndistributedContinuingOperationEarningsLossAllocationToParticipatingSecuritiesBasic100.0100.0100.0100.00.00.00.00.0

us-gaap:VariableLeaseCost



Period End2020-03-312019-09-302019-06-302019-03-31
Value64896344
Percentage of VariableLeaseCost100.0100.0100.0100.0

dei:EntityCommonStockSharesOutstanding



Period End2020-03-312020-01-312019-09-302019-06-302019-04-30
Value740741741743748
Percentage of EntityCommonStockSharesOutstanding100.0100.0100.0100.0100.0

dow:AsbestosRelatedLiabilitiesNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value104810601087111311331142
Percentage of AsbestosRelatedLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value10481060108711131142
Percentage of AsbestosRelatedLiabilitiesNoncurrent100.0100.0100.0100.0100.0

dow:AvailableforsaleDebtSecuritiesAmortizedCostBasisCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1211120101100
Percentage of AvailableforsaleDebtSecuritiesAmortizedCostBasisCurrent100.0100.0100.0100.0100.0100.0

dow:CashEquivalentsFairValue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1806628501530345566
Percentage of CashEquivalentsFairValue100.0100.0100.0100.0100.0100.0

us-gaap:InvestmentType

us-gaap:HeldtomaturitySecurities



Period End2020-03-312019-12-312018-12-31
Value1233220410
Percentage of CashEquivalentsFairValue68.335.072.4

us-gaap:MoneyMarketFunds



Period End2020-03-312019-12-312018-12-31
Value573408156
Percentage of CashEquivalentsFairValue31.765.027.6

dow:CashEquivalentsMarketableSecuritiesandOtherInvestmentsAccumulatedGrossUnrealizedGainBeforeTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value81119119986530
Percentage of CashEquivalentsMarketableSecuritiesandOtherInvestmentsAccumulatedGrossUnrealizedGainBeforeTax100.0100.0100.0100.0100.0100.0

dow:CashEquivalentsMarketableSecuritiesandOtherInvestmentsAccumulatedGrossUnrealizedLossBeforeTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1182225193087
Percentage of CashEquivalentsMarketableSecuritiesandOtherInvestmentsAccumulatedGrossUnrealizedLossBeforeTax100.0100.0100.0100.0100.0100.0

dow:CashEquivalentsMarketableSecuritiesandOtherInvestmentsAmortizedCostBasis



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value315021362127215922072422
Percentage of CashEquivalentsMarketableSecuritiesandOtherInvestmentsAmortizedCostBasis100.0100.0100.0100.0100.0100.0

dow:CashEquivalentsMarketableSecuritiesandOtherInvestmentsFairValue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value311322332221223822422365
Percentage of CashEquivalentsMarketableSecuritiesandOtherInvestmentsFairValue100.0100.0100.0100.0100.0100.0

us-gaap:BalanceSheetLocation

dow:Deferredcashcontribution

dow:OtherNoncurrentObligations



Period End2020-03-312019-12-312019-04-01
Value270270400
Percentage of Deferredcashcontribution100.0100.0100.0

dow:DerivativeAssetsLiabilitiesAccumulatedGrossUnrealizedGainBeforeTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value380168271147174211
Percentage of DerivativeAssetsLiabilitiesAccumulatedGrossUnrealizedGainBeforeTax100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeInstrumentRisk

us-gaap:CommodityContract



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1335965848891
Percentage of DerivativeAssetsLiabilitiesAccumulatedGrossUnrealizedGainBeforeTax35.035.124.057.150.643.1

us-gaap:ForeignExchangeContract



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value531011345286120
Percentage of DerivativeAssetsLiabilitiesAccumulatedGrossUnrealizedGainBeforeTax13.960.149.435.449.456.9

us-gaap:InterestRateContract



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1948721100
Percentage of DerivativeAssetsLiabilitiesAccumulatedGrossUnrealizedGainBeforeTax51.14.826.67.50.00.0

dow:DerivativeAssetsLiabilitiesAccumulatedGrossUnrealizedLossBeforeTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value656419570433342285
Percentage of DerivativeAssetsLiabilitiesAccumulatedGrossUnrealizedLossBeforeTax100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeInstrumentRisk

us-gaap:CommodityContract



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value286115164170147178
Percentage of DerivativeAssetsLiabilitiesAccumulatedGrossUnrealizedLossBeforeTax43.627.428.839.343.062.5

us-gaap:ForeignExchangeContract



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value392121381443
Percentage of DerivativeAssetsLiabilitiesAccumulatedGrossUnrealizedLossBeforeTax5.95.03.78.84.115.1

us-gaap:InterestRateContract



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value33128338522518164
Percentage of DerivativeAssetsLiabilitiesAccumulatedGrossUnrealizedLossBeforeTax50.567.567.552.052.922.5

dow:EquityMethodInvestmentLiabilityNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value-317-80-139-178-870-495
Percentage of EquityMethodInvestmentLiabilityNoncurrent100.0100.0100.0100.0100.0100.0

us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

dow:EquatePetrochemicalCompanyKsc



Period End2020-03-312019-12-312019-09-302019-06-302019-03-31
Value225-80139-178-212
Percentage of EquityMethodInvestmentLiabilityNoncurrent-71.0100.0-100.0100.024.4

dow:SadaraChemicalCompany



Period End2020-03-312019-12-31
Value920
Percentage of EquityMethodInvestmentLiabilityNoncurrent-29.0-0.0

dow:EquityMethodInvestmentNetofInvestmentLiabilities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value91813242868279024513328
Percentage of EquityMethodInvestmentNetofInvestmentLiabilities100.0100.0100.0100.0100.0100.0

dow:EquitySecuritiesAccumulatedGrossUnrealizedGainBeforeTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value167751
Percentage of EquitySecuritiesAccumulatedGrossUnrealizedGainBeforeTax100.0100.0100.0100.0100.0100.0

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1000000.01000000.01000000.01000000.00.01000000.0
Percentage of EquitySecuritiesAccumulatedGrossUnrealizedLossBeforeTax100.0100.0100.0100.00.0100.0

dow:EquitySecuritiesAmortizedCostBasis



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value81013151616
Percentage of EquitySecuritiesAmortizedCostBasis100.0100.0100.0100.0100.0100.0

dow:EquitySecuritiesFairValue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value81519212116
Percentage of EquitySecuritiesFairValue100.0100.0100.0100.0100.0100.0

dow:GrossLifeInsuranceCorporateOrBankOwnedAmount



Period End2020-03-312019-12-31
Value828820
Percentage of GrossLifeInsuranceCorporateOrBankOwnedAmount100.0100.0

dei:LegalEntity

dow:IndemnificationAsset

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Period End2020-03-312019-12-312019-09-302018-12-31
Value1001001000
Percentage of IndemnificationAsset100.0100.0100.00.0

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us-gaap:OtherCurrentAssets



Period End2020-03-312019-12-312019-09-302019-06-30
Value5158109167
Percentage of IndemnificationAsset51.058.0109.00.0

us-gaap:OtherNoncurrentAssets



Period End2020-03-312019-12-312019-09-30
Value325216
Percentage of IndemnificationAsset32.052.016.0

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dow:Indemnificationliability

dow:AccruedAndOtherCurrentLiabilities



Period End2020-03-312019-12-312019-09-302019-06-30
Value319352368471
Percentage of Indemnificationliability100.0100.0100.0100.0

dow:OtherNoncurrentObligations



Period End2020-03-312019-12-312019-09-302019-06-30
Value10596154158
Percentage of Indemnificationliability32.927.341.833.5

dow:LongTermDebtAccumulatedFairValueAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value6812711718
Percentage of LongTermDebtAccumulatedFairValueAdjustment100.0100.0100.0100.0100.0100.0

dow:LongTermDebtAccumulatedGrossUnrealizedGainBeforeTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value38474284351
Percentage of LongTermDebtAccumulatedGrossUnrealizedGainBeforeTax100.0100.0100.0100.0100.0100.0

dow:LongTermDebtAccumulatedGrossUnrealizedLossBeforeTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value13262258208819221405971
Percentage of LongTermDebtAccumulatedGrossUnrealizedLossBeforeTax100.0100.0100.0100.0100.0100.0

dow:OtherInvestmentsandSecuritiesAccumulatedGrossUnrealizedGainBeforeTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value81119119986530
Percentage of OtherInvestmentsandSecuritiesAccumulatedGrossUnrealizedGainBeforeTax100.0100.0100.0100.0100.0100.0

dow:OtherInvestmentsandSecuritiesAccumulatedGrossUnrealizedLossBeforeTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value118-2225193087
Percentage of OtherInvestmentsandSecuritiesAccumulatedGrossUnrealizedLossBeforeTax100.0100.0100.0100.0100.0100.0

dow:TotalLeaseAssets



Period End2020-03-312019-12-31
Value22892391
Percentage of TotalLeaseAssets100.0100.0

dow:TotalLeaseLiabilities



Period End2020-03-312019-12-31
Value24242555
Percentage of TotalLeaseLiabilities100.0100.0

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value181520642025217931763330
Percentage of AccountsPayableOtherCurrent100.0100.0100.0100.0100.0100.0

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Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value18152064202521792479
Percentage of AccountsPayableOtherCurrent100.0100.0100.0100.074.4

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value376938893855418851035378
Percentage of AccountsPayableTradeCurrent100.0100.0100.0100.0100.0100.0

dei:LegalEntity

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Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value37693889385541874456
Percentage of AccountsPayableTradeCurrent100.0100.0100.0100.082.9

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value112211551193796813820
Percentage of AccrualForEnvironmentalLossContingencies100.0100.0100.0100.0100.0100.0

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dow:AccrualForEnvironmentalLossContingenciesSuperFundSites



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value205207211156159156
Percentage of AccrualForEnvironmentalLossContingencies18.317.917.719.619.619.0

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value281127623518360632323611
Percentage of AccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0

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Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value23142233314530722931
Percentage of AccruedLiabilitiesCurrent82.380.889.485.281.2

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us-gaap:VariableInterestEntityPrimaryBeneficiary



Period End2020-03-312019-12-31
Value115141
Percentage of AccruedLiabilitiesCurrent4.15.1

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value737073257239718671537042
Percentage of AdditionalPaidInCapital100.0100.0100.0100.0100.0100.0

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Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value73787333724571927042
Percentage of AdditionalPaidInCapital100.1100.1100.1100.1100.0

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Period End2020-03-312019-12-312019-09-302019-03-312018-12-31
Value434549109106
Percentage of AllowanceForDoubtfulAccountsReceivableCurrent100.0100.0100.0100.0100.0

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Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value114117123122120
Percentage of AssetsFairValueDisclosure100.0100.0100.0100.0100.0

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Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value2218292929
Percentage of AssetsFairValueDisclosure19.315.423.623.824.2

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value596068585033
Percentage of AssetsFairValueDisclosure51.851.355.347.50.027.5

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value375024472591245324812668
Percentage of AssetsFairValueDisclosure3289.52091.52106.52010.70.02223.3

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value380925072659251125312701
Percentage of AssetsFairValueDisclosure3341.22142.72161.82058.20.02250.8

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value176741765818360186912418121588
Percentage of AssetsNoncurrentOtherThanNoncurrentInvestmentsAndPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0

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dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value1767317658183591868916585
Percentage of AssetsNoncurrentOtherThanNoncurrentInvestmentsAndPropertyPlantAndEquipment100.0100.0100.0100.076.8

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value80113112916029
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax100.0100.0100.0100.0100.0100.0

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value438076634320
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax53.870.867.969.271.769.0

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value37333628179
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax46.229.232.130.828.331.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1172124183086
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax100.0100.0100.0100.0100.0100.0

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value841016132163
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax71.847.666.772.270.073.3

us-gaap:USTreasuryAndGovernment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value331185923
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax28.252.433.327.830.026.7

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value133514771602159417451740
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis100.0100.0100.0100.0100.0100.0

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value8779441091105410511026
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis65.763.968.166.160.259.0

us-gaap:USTreasuryAndGovernment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value458533511540694714
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis34.336.131.933.939.841.0

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss



Period End2020-03-312019-12-312018-12-31
Value291511
Percentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss100.0100.0100.0

us-gaap:FinancialInstrument

us-gaap:CorporateDebtSecurities



Period End2020-03-312019-12-312018-12-31
Value1875
Percentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss62.146.745.5

us-gaap:USTreasuryAndGovernment



Period End2020-03-312019-12-312018-12-31
Value1186
Percentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss37.953.354.5

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss



Period End2020-03-312019-12-312018-12-31
Value1172186
Percentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss100.0100.0100.0

us-gaap:FinancialInstrument

us-gaap:CorporateDebtSecurities



Period End2020-03-312019-12-312018-12-31
Value841063
Percentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss71.847.673.3

us-gaap:USTreasuryAndGovernment



Period End2020-03-312019-12-312018-12-31
Value331123
Percentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss28.252.426.7

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue



Period End2020-03-312019-12-312018-12-31
Value5502091262
Percentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue100.0100.0100.0

us-gaap:FinancialInstrument

us-gaap:CorporateDebtSecurities



Period End2020-03-312019-12-312018-12-31
Value431131788
Percentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue78.462.762.4

us-gaap:USTreasuryAndGovernment



Period End2020-03-312019-12-312018-12-31
Value11978474
Percentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue21.637.337.6

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue



Period End2020-03-312019-12-312018-12-31
Value5161341011
Percentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue100.0100.0100.0

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us-gaap:CorporateDebtSecurities



Period End2020-03-312019-12-312018-12-31
Value40779724
Percentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue78.959.071.6

us-gaap:USTreasuryAndGovernment



Period End2020-03-312019-12-312018-12-31
Value10955287
Percentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue21.141.028.4

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue



Period End2020-03-312019-12-312018-12-31
Value3475251
Percentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue100.0100.0100.0

us-gaap:FinancialInstrument

us-gaap:CorporateDebtSecurities



Period End2020-03-312019-12-312018-12-31
Value245264
Percentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue70.669.325.5

us-gaap:USTreasuryAndGovernment



Period End2020-03-312019-12-312018-12-31
Value1023187
Percentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue29.430.774.5

us-gaap:AvailableForSaleSecuritiesDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value129815691690166717751683
Percentage of AvailableForSaleSecuritiesDebtSecurities100.0100.0100.0100.0100.0100.0

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value20222622190
Percentage of AvailableForSaleSecuritiesDebtSecurities1.51.41.51.31.10.0

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value816992112510821054983
Percentage of AvailableForSaleSecuritiesDebtSecurities62.963.266.664.959.458.4

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value462555539563702700
Percentage of AvailableForSaleSecuritiesDebtSecurities35.635.431.933.839.541.6

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us-gaap:FairValueMeasurementsRecurring, us-gaap:CorporateDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value8361014115111041073983
Percentage of AvailableForSaleSecuritiesDebtSecurities64.464.668.166.260.558.4

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value462555539563702700
Percentage of AvailableForSaleSecuritiesDebtSecurities35.635.431.933.839.541.6

us-gaap:FinancialInstrument

us-gaap:CorporateDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value8361014115111041073983
Percentage of AvailableForSaleSecuritiesDebtSecurities64.464.668.166.260.558.4

us-gaap:USTreasuryAndGovernment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value462555539563702700
Percentage of AvailableForSaleSecuritiesDebtSecurities35.635.431.933.839.541.6

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1211120101100
Percentage of AvailableForSaleSecuritiesDebtSecuritiesCurrent100.0100.0100.0100.0100.0100.0

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Period End2020-03-312019-12-31
Value815
Percentage of AvailableForSaleSecuritiesEquitySecurities100.0100.0

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value81519212116
Percentage of AvailableForSaleSecuritiesEquitySecurities100.0100.00.00.00.00.0

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value81519212116
Percentage of AvailableForSaleSecuritiesEquitySecurities100.0100.00.00.00.00.0

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Period End2020-03-312019-12-312018-12-31
Value1233220410
Percentage of CashAndCashEquivalentsFairValueDisclosure100.0100.0100.0

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Period End2020-03-312019-12-312018-12-31
Value573408156
Percentage of CashAndCashEquivalentsFairValueDisclosure46.5185.538.0

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Period End2020-03-312019-12-312018-12-31
Value1233220410
Percentage of CashAndCashEquivalentsFairValueDisclosure100.0100.0100.0

us-gaap:FairValueMeasurementsRecurring, us-gaap:MoneyMarketFunds



Period End2020-03-312019-12-312018-12-31
Value573408156
Percentage of CashAndCashEquivalentsFairValueDisclosure46.5185.538.0

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1806628501530345566
Percentage of CashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0

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Period End2020-03-312019-12-312018-12-31
Value1233220410
Percentage of CashEquivalentsAtCarryingValue68.335.072.4

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Period End2020-03-312019-12-312018-12-31
Value573408156
Percentage of CashEquivalentsAtCarryingValue31.765.027.6

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value224178342637
Percentage of ContractWithCustomerAssetNetCurrent100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerAssetNetNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value174324747
Percentage of ContractWithCustomerAssetNetNoncurrent100.0100.0100.0100.0100.0100.0

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value196193201205233165
Percentage of ContractWithCustomerLiabilityCurrent100.0100.0100.0100.0100.0100.0

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value160216071619164817391390
Percentage of ContractWithCustomerLiabilityNoncurrent100.0100.0100.0100.0100.0100.0

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value3040592605619714713
Percentage of DebtInstrumentCarryingAmount100.0100.0100.0100.0100.0100.0

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value7603377
Percentage of DebtInstrumentCarryingAmount2.50.00.50.51.01.0

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value662139713971396896896
Percentage of DebtInstrumentCarryingAmount21.8236.0230.9225.5125.5125.7

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1397325325325325325
Percentage of DebtInstrumentCarryingAmount46.054.953.752.545.545.6

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value17376767615471547
Percentage of DebtInstrumentCarryingAmount5.712.812.612.3216.7217.0

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value888894829507948079637963
Percentage of DebtInstrumentCarryingAmount292.41601.71571.41531.51115.31116.8

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value32513721372137213721373
Percentage of DebtInstrumentCarryingAmount10.7231.8226.8221.6192.2192.6

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1211741424142414241424
Percentage of DebtInstrumentCarryingAmount4.029.4235.4230.0199.4199.7

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value125020002000200045334533
Percentage of DebtInstrumentCarryingAmount41.1337.8330.6323.1634.9635.8

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value702928792695703778
Percentage of DebtInstrumentCarryingAmount23.1156.8130.9112.398.5109.1

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dow:A050PercentNotesDue2027



Period End2020-03-31
Value1000
Percentage of DebtInstrumentFaceAmount100.0

dow:A1125PercentNotesDue2032



Period End2020-03-31
Value750
Percentage of DebtInstrumentFaceAmount75.0

dow:A1875PercentNotesDue2040



Period End2020-03-31
Value500
Percentage of DebtInstrumentFaceAmount50.0

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Period End2020-03-31
Value2250
Percentage of DebtInstrumentFaceAmount225.0

us-gaap:DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value355-331335337324334
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet100.0100.0100.0100.0100.0100.0

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Period End2020-03-312019-12-312018-12-31
Value88675
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss100.0100.0100.0

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Period End2020-03-312019-12-312018-12-31
Value66358
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss75.050.077.3

us-gaap:USTreasuryAndGovernment



Period End2020-03-312019-12-312018-12-31
Value22317
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss25.050.022.7

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Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value22482213176518571779
Percentage of DeferredIncomeTaxAssetsNet100.0100.0100.0100.0100.0

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Period End2020-03-312019-12-31
Value22482213
Percentage of DeferredIncomeTaxAssetsNet100.0100.0

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dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value352347380500501
Percentage of DeferredIncomeTaxLiabilitiesNet100.0100.0100.0100.0100.0

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Period End2020-03-312019-12-31
Value352347
Percentage of DeferredIncomeTaxLiabilitiesNet100.0100.0

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Period End2020-03-312019-12-312018-12-31
Value279034902290
Percentage of DerivativeAmountOfHedgedItem100.0100.0100.0

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1300034
Percentage of DerivativeAssetCollateralObligationToReturnCashOffset100.0100.00.00.00.0100.0

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value672834425718
Percentage of DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement100.0100.0100.0100.0100.0100.0

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Period End2020-03-312019-09-302019-06-302019-03-312018-12-31
Value13444
Percentage of DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement1.58.89.57.022.2

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Period End2020-03-312019-12-312019-09-30
Value15803
Percentage of DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement235.80.08.8

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value824440533147
Percentage of DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement122.4157.1117.6126.254.4261.1

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value22181814841
Percentage of DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement32.864.352.933.314.0227.8

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value10910522110416198
Percentage of DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement162.7375.0650.0247.6282.5544.4

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value6544364429128
Percentage of DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement97.0157.1105.9104.850.9711.1

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Period End2020-03-312019-12-312019-09-302019-06-30
Value192213311
Percentage of DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement286.675.097.126.2

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value312323151017
Percentage of DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement46.382.167.635.717.594.4

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1416772989093
Percentage of DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement210.4239.3211.8233.3157.9516.7

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value174149257148189226
Percentage of DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement259.7532.1755.9352.4331.61255.6

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Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value3503586120
Percentage of DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement522.4125.0252.928.60.0

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1729095113100110
Percentage of DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement256.7321.4279.4269.0175.4611.1

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value174149257148189226
Percentage of DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement259.7532.1755.9352.4331.61255.6

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Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value3503586120
Percentage of DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement522.4125.0252.928.60.0

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value696274438273290336
Percentage of DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement1038.8978.61288.2650.0508.81866.7

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value450198328210249163
Percentage of DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement671.6707.1964.7500.0436.8905.6

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value246761106341173
Percentage of DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement367.2271.4323.5150.071.9961.1

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value336743
Percentage of DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset100.0100.0100.0100.0100.0100.0

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Period End2020-03-312019-09-302019-06-302019-03-312018-12-31
Value01122
Percentage of DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset0.016.714.350.066.7

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Period End2020-03-312019-12-312019-09-30
Value003
Percentage of DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset0.00.050.0

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value32252117513
Percentage of DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset1066.7833.3350.0242.9125.0433.3

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value432411
Percentage of DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset133.3100.033.357.125.033.3

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value8036107858942
Percentage of DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset2666.71200.01783.31214.32225.01400.0

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value411216111564
Percentage of DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset1366.7400.0266.7157.1375.02133.3

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Period End2020-03-312019-12-312019-09-302019-06-30
Value15613110
Percentage of DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset5200.0433.3183.30.0

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value316106167126116125
Percentage of DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset10533.33533.32783.31800.02900.04166.7

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value271771451099858
Percentage of DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset9033.32566.72416.71557.12450.01933.3

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value452922171867
Percentage of DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset1500.0966.7366.7242.9450.02233.3

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value642528355315
Percentage of DerivativeAssets100.0100.0100.0100.0100.0100.0

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Period End2020-03-312019-09-302019-06-302019-03-312018-12-31
Value12322
Percentage of DerivativeAssets1.67.18.63.813.3

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Period End2020-03-312019-12-312019-09-30
Value15800
Percentage of DerivativeAssets246.90.00.0

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value501919362634
Percentage of DerivativeAssets78.176.067.9102.949.1226.7

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value18151610740
Percentage of DerivativeAssets28.160.057.128.613.2266.7

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value2969114197256
Percentage of DerivativeAssets45.3276.0407.154.3135.8373.3

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value243220331464
Percentage of DerivativeAssets37.5128.071.494.326.4426.7

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Period End2020-03-312019-12-312019-09-302019-06-30
Value3682211
Percentage of DerivativeAssets56.232.078.631.4

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value380168271147174211
Percentage of DerivativeAssets593.8672.0967.9420.0328.31406.7

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value179121183101151105
Percentage of DerivativeAssets279.7484.0653.6288.6284.9700.0

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value20147884623106
Percentage of DerivativeAssets314.1188.0314.3131.443.4706.7

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value-276-251-299-286-168-74
Percentage of DerivativeAssetsLiabilitiesAtFairValueNet100.0100.0100.0100.0100.0100.0

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value-153-56-99-86-59-87
Percentage of DerivativeAssetsLiabilitiesAtFairValueNet55.422.333.130.135.1117.6

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1480113147277
Percentage of DerivativeAssetsLiabilitiesAtFairValueNet-5.1-31.9-37.8-4.9-42.9-104.1

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value-137-275-313-214-181-64
Percentage of DerivativeAssetsLiabilitiesAtFairValueNet49.6109.6104.774.8107.786.5

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1529510711793111
Percentage of DerivativeFairValueOfDerivativeLiability100.0100.0100.0100.0100.0100.0

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value2417233187
Percentage of DerivativeFairValueOfDerivativeLiability15.817.921.526.58.66.3

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value88461101169846
Percentage of DerivativeFairValueOfDerivativeLiability57.948.4102.899.1105.441.4

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value7123341820103
Percentage of DerivativeFairValueOfDerivativeLiability46.724.231.815.421.592.8

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Period End2020-03-312019-12-312019-09-302019-06-30
Value156231198
Percentage of DerivativeFairValueOfDerivativeLiability102.624.210.383.8

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1483869576086
Percentage of DerivativeFairValueOfDerivativeLiability97.440.064.548.764.577.5

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value114478
Percentage of DerivativeFairValueOfDerivativeLiability0.71.13.73.47.57.2

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Period End2020-03-312019-12-312019-09-30
Value33115030
Percentage of DerivativeFairValueOfDerivativeLiability217.8157.928.0

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value971530746570467425
Percentage of DerivativeFairValueOfDerivativeLiability638.8557.9697.2487.2502.2382.9

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value544203509515432307
Percentage of DerivativeFairValueOfDerivativeLiability357.9213.7475.7440.2464.5276.6

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value4273272375535118
Percentage of DerivativeFairValueOfDerivativeLiability280.9344.2221.547.037.6106.3

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1206679978793
Percentage of DerivativeLiabilities100.0100.0100.0100.0100.0100.0

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value2014212543
Percentage of DerivativeLiabilities16.721.226.625.84.63.2

dow:AccruedAndOtherCurrentLiabilities, us-gaap:ForeignExchangeContract, us-gaap:FairValueInputsLevel2, us-gaap:DesignatedAsHedgingInstrument



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value81033194
Percentage of DerivativeLiabilities6.715.23.832.010.34.3

dow:AccruedAndOtherCurrentLiabilities, us-gaap:ForeignExchangeContract, us-gaap:FairValueInputsLevel2, us-gaap:Nondesignated



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value3111187539
Percentage of DerivativeLiabilities25.816.722.87.25.741.9

dow:AccruedAndOtherCurrentLiabilities, us-gaap:InterestRateContract, us-gaap:FairValueInputsLevel2, us-gaap:DesignatedAsHedgingInstrument



Period End2020-03-312019-12-312019-09-302019-06-30
Value010098
Percentage of DerivativeLiabilities0.015.20.0101.0

dow:OtherNoncurrentObligations, us-gaap:CommodityContract, us-gaap:FairValueInputsLevel2, us-gaap:DesignatedAsHedgingInstrument



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1453461455277
Percentage of DerivativeLiabilities120.851.577.246.459.882.8

dow:OtherNoncurrentObligations, us-gaap:CommodityContract, us-gaap:FairValueInputsLevel2, us-gaap:Nondesignated



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value113345
Percentage of DerivativeLiabilities0.81.53.83.14.65.4

dow:OtherNoncurrentObligations, us-gaap:InterestRateContract, us-gaap:FairValueInputsLevel2, us-gaap:Nondesignated



Period End2020-03-312019-12-312019-09-30
Value33115027
Percentage of DerivativeLiabilities275.8227.334.2

us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel2



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value656419570433342285
Percentage of DerivativeLiabilities546.7634.8721.5446.4393.1306.5

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:HedgingDesignation

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value273121355398329238
Percentage of DerivativeLiabilities227.5183.3449.4410.3378.2255.9

us-gaap:FairValueInputsLevel2, us-gaap:Nondesignated



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value383298215351347
Percentage of DerivativeLiabilities319.2451.5272.236.114.950.5

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value6527362026
Percentage of DerivativeLiabilityCollateralRightToReclaimCashOffset100.0100.0100.0100.0100.0100.0

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us-gaap:DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset

dow:AccruedAndOtherCurrentLiabilities, us-gaap:CommodityContract, us-gaap:FairValueInputsLevel2, us-gaap:DesignatedAsHedgingInstrument



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value32292820618
Percentage of DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset100.0100.0100.0100.0100.0100.0

dow:AccruedAndOtherCurrentLiabilities, us-gaap:CommodityContract, us-gaap:FairValueInputsLevel2, us-gaap:Nondesignated



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value432644
Percentage of DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset12.510.37.130.066.722.2

dow:AccruedAndOtherCurrentLiabilities, us-gaap:ForeignExchangeContract, us-gaap:FairValueInputsLevel2, us-gaap:DesignatedAsHedgingInstrument



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value8036107858942
Percentage of DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset250.0124.1382.1425.01483.3233.3

dow:AccruedAndOtherCurrentLiabilities, us-gaap:ForeignExchangeContract, us-gaap:FairValueInputsLevel2, us-gaap:Nondesignated



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value401216111564
Percentage of DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset125.041.457.155.0250.0355.6

dow:AccruedAndOtherCurrentLiabilities, us-gaap:InterestRateContract, us-gaap:FairValueInputsLevel2, us-gaap:DesignatedAsHedgingInstrument



Period End2020-03-312019-12-312019-09-302019-06-30
Value15613110
Percentage of DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset487.544.839.30.0

dow:OtherNoncurrentObligations, us-gaap:CommodityContract, us-gaap:FairValueInputsLevel2, us-gaap:DesignatedAsHedgingInstrument



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value3481289
Percentage of DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset9.413.828.660.0133.350.0

dow:OtherNoncurrentObligations, us-gaap:CommodityContract, us-gaap:FairValueInputsLevel2, us-gaap:Nondesignated



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value001133
Percentage of DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset0.00.03.65.050.016.7

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Period End2020-03-312019-12-312019-09-30
Value003
Percentage of DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset0.00.010.7

us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel2



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value315111176137125140
Percentage of DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset984.4382.8628.6685.02083.3777.8

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:HedgingDesignation

us-gaap:FairValueInputsLevel2, us-gaap:DesignatedAsHedgingInstrument



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value2718215411710369
Percentage of DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset846.9282.8550.0585.01716.7383.3

us-gaap:FairValueInputsLevel2, us-gaap:Nondesignated



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value442922202271
Percentage of DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset137.5100.078.6100.0366.7394.4

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us-gaap:DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value181417181323
Percentage of DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement100.0100.0100.0100.0100.0100.0

us-gaap:CommodityContract, us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value307137186191155189
Percentage of DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement1705.6978.61094.11061.11192.3821.7

us-gaap:ForeignExchangeContract, us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value15969144134117149
Percentage of DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement883.3492.9847.1744.4900.0647.8

us-gaap:InterestRateContract, us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value48731039922764
Percentage of DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement2705.62214.32347.11261.1278.3

us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementFrequency

us-gaap:CommodityContract, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value325151203209168212
Percentage of DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement1805.61078.61194.11161.11292.3921.7

us-gaap:ForeignExchangeContract, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value15969144134117149
Percentage of DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement883.3492.9847.1744.4900.0647.8

us-gaap:InterestRateContract, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value48731039922764
Percentage of DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement2705.62214.32347.11261.1278.3

us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation

us-gaap:DerivativeNonmonetaryNotionalAmount

dow:CommodityContractHydrocarbons, us-gaap:DesignatedAsHedgingInstrument



Period End2020-03-312019-12-31
Value206
Percentage of DerivativeNonmonetaryNotionalAmount100.0100.0

dow:CommodityContractHydrocarbons, us-gaap:Nondesignated



Period End2020-03-312019-12-31
Value400000.0100000.0
Percentage of DerivativeNonmonetaryNotionalAmount2.01.6

dow:CommodityContractPower, us-gaap:Nondesignated



Period End2020-03-312019-12-31
Value80500.087500.0
Percentage of DerivativeNonmonetaryNotionalAmount0.41.4

us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation

us-gaap:DerivativeNotionalAmount

us-gaap:ForeignExchangeContract, us-gaap:DesignatedAsHedgingInstrument



Period End2020-03-312019-12-312018-12-31
Value347262534457
Percentage of DerivativeNotionalAmount100.0100.0100.0

us-gaap:ForeignExchangeContract, us-gaap:Nondesignated



Period End2020-03-312019-12-312018-12-31
Value5706556719285
Percentage of DerivativeNotionalAmount164.389.0432.7

us-gaap:InterestRateSwap, us-gaap:DesignatedAsHedgingInstrument



Period End2020-03-312019-12-312018-12-31
Value9219222049
Percentage of DerivativeNotionalAmount26.514.746.0

us-gaap:InterestRateSwap, us-gaap:Nondesignated



Period End2020-03-312019-12-312019-09-302018-12-31
Value105145575
Percentage of DerivativeNotionalAmount3.02.30.00.1

us-gaap:EquityMethodInvestments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value1235140430072968332138233107
Percentage of EquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value12351404300729683320
Percentage of EquityMethodInvestments100.0100.0100.0100.086.8

us-gaap:ConsolidatedEntities, us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:VariableInterestEntityNotPrimaryBeneficiary, dow:SiliconInputsJointVentures



Period End2020-03-312019-12-31
Value102100
Percentage of EquityMethodInvestments8.37.1

us-gaap:EquitySecuritiesWithoutReadilyDeterminableFairValueAmount



Period End2020-03-312019-12-312018-12-31
Value190189204
Percentage of EquitySecuritiesWithoutReadilyDeterminableFairValueAmount100.0100.0100.0

us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments

dow:PrivateMarketSecuritiesandRealEstate, us-gaap:FairValueMeasuredAtNetAssetValuePerShare, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value6676838689
Percentage of FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseLiability



Period End2020-03-312019-09-302019-06-302019-03-31
Value418425399369
Percentage of FinanceLeaseLiability100.0100.0100.0100.0

us-gaap:LongtermDebtType

dow:FinanceLeases



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value418395425399369369
Percentage of FinanceLeaseLiability100.00.0100.0100.0100.00.0

us-gaap:FinanceLeaseLiabilityCurrent



Period End2020-03-312019-12-31
Value4932
Percentage of FinanceLeaseLiabilityCurrent100.0100.0

us-gaap:FinanceLeaseLiabilityNoncurrent



Period End2020-03-312019-12-31
Value369363
Percentage of FinanceLeaseLiabilityNoncurrent100.0100.0

us-gaap:FinanceLeaseWeightedAverageDiscountRatePercent



Period End2020-03-312019-12-31
Value0.06040.0628
Percentage of FinanceLeaseWeightedAverageDiscountRatePercent100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value399438863748365759125762
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:ComputerSoftwareIntangibleAsset



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value915893867847900876
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization22.923.023.123.215.215.2

us-gaap:CustomerRelatedIntangibleAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value121911841125110522112151
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization30.530.530.030.237.437.3

us-gaap:DevelopedTechnologyRights



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value151814671414136319961934
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization38.037.837.737.333.833.6

us-gaap:TrademarksAndTradeNames



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value342342342342638631
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization8.68.89.19.410.811.0

us-gaap:FiniteLivedIntangibleAssetsGross



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value76307642760476541060610626
Percentage of FiniteLivedIntangibleAssetsGross100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:ComputerSoftwareIntangibleAsset



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value145814491434142615391529
Percentage of FiniteLivedIntangibleAssetsGross19.119.018.918.614.514.4

us-gaap:CustomerRelatedIntangibleAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value318432073185324248984911
Percentage of FiniteLivedIntangibleAssetsGross41.742.041.942.446.246.2

us-gaap:DevelopedTechnologyRights



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value263626342633263432533255
Percentage of FiniteLivedIntangibleAssetsGross34.534.534.634.430.730.6

us-gaap:TrademarksAndTradeNames



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value352352352352680688
Percentage of FiniteLivedIntangibleAssetsGross4.64.64.64.66.46.5

us-gaap:GuaranteeObligationsByNature

us-gaap:GuaranteeObligationsCurrentCarryingValue

dow:ResidualValueGuarantees



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value0000130
Percentage of GuaranteeObligationsCurrentCarryingValue0.00.00.00.0100.0

us-gaap:PerformanceGuarantee



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value101011111525
Percentage of GuaranteeObligationsCurrentCarryingValue0.00.00.00.00.019.2

us-gaap:GuaranteeObligationsByNature

us-gaap:GuaranteeObligationsMaximumExposure

dow:ResidualValueGuarantees



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value788792763755885
Percentage of GuaranteeObligationsMaximumExposure100.0100.0100.0100.0100.0

us-gaap:PerformanceGuarantee



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value395039524116412345144523
Percentage of GuaranteeObligationsMaximumExposure501.3499.0539.4546.10.0511.1

us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:GuaranteeObligationsByNature

dow:SadaraChemicalCompany, us-gaap:PerformanceGuarantee



Period End2020-03-312019-12-312019-09-302019-06-302019-03-31
Value39003900410041004200
Percentage of GuaranteeObligationsMaximumExposure494.9492.4537.4543.00.0

us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass

us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill

us-gaap:InProcessResearchAndDevelopment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value03334949
Percentage of IndefiniteLivedIntangibleAssetsExcludingGoodwill0.0100.0100.0100.0100.0100.0

us-gaap:IntangibleAssetsGrossExcludingGoodwill



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value76307645760776571065510675
Percentage of IntangibleAssetsGrossExcludingGoodwill100.0100.0100.0100.0100.0100.0

us-gaap:InventoryAdjustments



Period End2020-03-312019-12-31
Value-187-114
Percentage of InventoryAdjustments100.0100.0

us-gaap:InventoryGross



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value613761006295678997739675
Percentage of InventoryGross100.0100.0100.0100.0100.0100.0

us-gaap:InventoryRawMaterials



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value590628654692940941
Percentage of InventoryRawMaterials100.0100.0100.0100.0100.0100.0

us-gaap:InventoryWorkInProcess



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value108011221190127222392214
Percentage of InventoryWorkInProcess100.0100.0100.0100.0100.0100.0

us-gaap:InvestmentsFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-03-312018-12-31
Value13061584170917961699
Percentage of InvestmentsFairValueDisclosure100.0100.0100.0100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:LiabilitiesFairValueDisclosure

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value181417181323
Percentage of LiabilitiesFairValueDisclosure100.0100.0100.0100.0100.0100.0

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value185921917720404199242130320616
Percentage of LiabilitiesFairValueDisclosure103288.9136978.6120023.5110688.9163869.289634.8

us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value186101919120421199422131620639
Percentage of LiabilitiesFairValueDisclosure103388.9137078.6120123.5110788.9163969.289734.8

us-gaap:LiabilitiesOtherThanLongtermDebtNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value197911977618537176291905816400
Percentage of LiabilitiesOtherThanLongtermDebtNoncurrent100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value1940919403179841706315278
Percentage of LiabilitiesOtherThanLongtermDebtNoncurrent98.198.197.096.893.2

us-gaap:LiabilityForAsbestosAndEnvironmentalClaimsGross



Period End2020-03-312019-12-31
Value11481165
Percentage of LiabilityForAsbestosAndEnvironmentalClaimsGross100.0100.0

us-gaap:LifeInsuranceCorporateOrBankOwnedAmount



Period End2020-03-312019-12-31
Value541735
Percentage of LifeInsuranceCorporateOrBankOwnedAmount100.0100.0

us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity



Period End2020-03-312019-12-312019-09-302019-06-302019-03-31
Value876594289617963612130
Percentage of LineOfCreditFacilityMaximumBorrowingCapacity100.0100.0100.0100.0100.0

us-gaap:CreditFacility, us-gaap:DebtInstrument

us-gaap:RevolvingCreditFacility, dow:BilateralRevolvingCreditFacilityDueMarch2022



Period End2020-03-31
Value150
Percentage of LineOfCreditFacilityMaximumBorrowingCapacity1.7

us-gaap:RevolvingCreditFacility, dow:BilateralRevolvingCreditFacilityDueMarch2025FacilityOne



Period End2020-03-31
Value100
Percentage of LineOfCreditFacilityMaximumBorrowingCapacity1.1

us-gaap:RevolvingCreditFacility, dow:BilateralRevolvingCreditFacilityDueMarch2025FacilityThree



Period End2020-03-31
Value275
Percentage of LineOfCreditFacilityMaximumBorrowingCapacity3.1

us-gaap:RevolvingCreditFacility, dow:BilateralRevolvingCreditFacilityDueMarch2025FacilityTwo



Period End2020-03-31
Value250
Percentage of LineOfCreditFacilityMaximumBorrowingCapacity2.9

us-gaap:RevolvingCreditFacility, dow:TermLoanFacilityDueSeptember2023



Period End2020-03-31
Value1250
Percentage of LineOfCreditFacilityMaximumBorrowingCapacity14.3

us-gaap:SecuredDebt, dow:EuropeanSecuritizationFacilityDueOctober2020



Period End2020-03-312019-09-302019-06-302019-03-31
Value440437456450
Percentage of LineOfCreditFacilityMaximumBorrowingCapacity5.04.54.73.7

us-gaap:LineOfCreditFacilityRemainingBorrowingCapacity



Period End2020-03-312019-12-312019-09-302019-06-302019-03-31
Value75157428761776367630
Percentage of LineOfCreditFacilityRemainingBorrowingCapacity100.0100.0100.0100.0100.0

us-gaap:CreditFacility, us-gaap:DebtInstrument

us-gaap:RevolvingCreditFacility, dow:BilateralRevolvingCreditFacilityDueMarch2022



Period End2020-03-31
Value150
Percentage of LineOfCreditFacilityRemainingBorrowingCapacity2.0

us-gaap:RevolvingCreditFacility, dow:BilateralRevolvingCreditFacilityDueMarch2025FacilityOne



Period End2020-03-31
Value100
Percentage of LineOfCreditFacilityRemainingBorrowingCapacity1.3

us-gaap:RevolvingCreditFacility, dow:BilateralRevolvingCreditFacilityDueMarch2025FacilityThree



Period End2020-03-31
Value275
Percentage of LineOfCreditFacilityRemainingBorrowingCapacity3.7

us-gaap:RevolvingCreditFacility, dow:BilateralRevolvingCreditFacilityDueMarch2025FacilityTwo



Period End2020-03-31
Value250
Percentage of LineOfCreditFacilityRemainingBorrowingCapacity3.3

us-gaap:RevolvingCreditFacility, dow:TermLoanFacilityDueSeptember2023



Period End2020-03-31
Value0.0
Percentage of LineOfCreditFacilityRemainingBorrowingCapacity0.0

us-gaap:SecuredDebt, dow:EuropeanSecuritizationFacilityDueOctober2020



Period End2020-03-312019-09-302019-06-302019-03-31
Value440437456450
Percentage of LineOfCreditFacilityRemainingBorrowingCapacity5.95.76.05.9

us-gaap:LongTermAccountsNotesAndLoansReceivableNetNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value6971063881785345394
Percentage of LongTermAccountsNotesAndLoansReceivableNetNoncurrent100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value6651011868771360
Percentage of LongTermAccountsNotesAndLoansReceivableNetNoncurrent95.495.198.598.291.4

us-gaap:LongTermDebtAndCapitalLeaseObligations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value163131597517213171551716019254
Percentage of LongTermDebtAndCapitalLeaseObligations100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value1631315975172131715519253
Percentage of LongTermDebtAndCapitalLeaseObligations100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

us-gaap:VariableInterestEntityPrimaryBeneficiary



Period End2020-03-312019-12-31
Value3034
Percentage of LongTermDebtAndCapitalLeaseObligations0.20.2

us-gaap:LongTermDebtAndCapitalLeaseObligationsCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value3844353782972369340
Percentage of LongTermDebtAndCapitalLeaseObligationsCurrent100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value384435378297338
Percentage of LongTermDebtAndCapitalLeaseObligationsCurrent100.0100.0100.0100.099.4

us-gaap:LongTermDebtFairValue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value176391866119675193722085020214
Percentage of LongTermDebtFairValue100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value176391866119675193722085020214
Percentage of LongTermDebtFairValue100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value176391866119675193722085020214
Percentage of LongTermDebtFairValue100.0100.0100.0100.0100.0100.0

us-gaap:LongTermInvestmentsAndReceivablesNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value406850556625631164036865
Percentage of LongTermInvestmentsAndReceivablesNet100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value40365003661262976326
Percentage of LongTermInvestmentsAndReceivablesNet99.299.099.899.892.1

us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:LongtermDebtWeightedAverageInterestRate

dow:ForeignCurrencyLoans, us-gaap:LoansPayable



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value0.01410.03260.03330.03380.03190.0321
Percentage of LongtermDebtWeightedAverageInterestRate100.0100.0100.0100.0100.0100.0

dow:PromissoryNotesandDebenturesFinalMaturityCurrentYear, us-gaap:LoansPayable



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value0.08440.00.0980.0980.0980.098
Percentage of LongtermDebtWeightedAverageInterestRate598.60.0294.3289.9307.2305.3

dow:PromissoryNotesandDebenturesFinalMaturityYearFive, us-gaap:LoansPayable



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value0.05260.03370.03370.03370.0350.035
Percentage of LongtermDebtWeightedAverageInterestRate373.0103.4101.299.7109.7109.0

dow:PromissoryNotesandDebenturesFinalMaturityYearFour, us-gaap:LoansPayable



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value0.03370.07640.07640.07640.07640.0764
Percentage of LongtermDebtWeightedAverageInterestRate239.0234.4229.4226.0239.5238.0

dow:PromissoryNotesandDebenturesFinalMaturityYearOne, us-gaap:LoansPayable



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value0.08950.08440.08440.08440.04460.0446
Percentage of LongtermDebtWeightedAverageInterestRate634.8258.9253.5249.7139.8138.9

dow:PromissoryNotesandDebenturesFinalMaturityYearSixandThereafter, us-gaap:LoansPayable



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value0.05730.0570.0570.0570.05980.0598
Percentage of LongtermDebtWeightedAverageInterestRate406.4174.8171.2168.6187.5186.3

dow:PromissoryNotesandDebenturesFinalMaturityYearThree, us-gaap:LoansPayable



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value0.07640.0350.0350.0350.0350.035
Percentage of LongtermDebtWeightedAverageInterestRate541.8107.4105.1103.6109.7109.0

dow:PromissoryNotesandDebenturesFinalMaturityYearTwo, us-gaap:LoansPayable



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value0.08640.08950.04710.04710.04710.0471
Percentage of LongtermDebtWeightedAverageInterestRate612.8274.5141.4139.3147.6146.7

dow:U.S.DollarLoans, us-gaap:LoansPayable



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value0.01740.02550.0280.03460.03520.0359
Percentage of LongtermDebtWeightedAverageInterestRate123.478.284.1102.4110.3111.8

us-gaap:LongtermDebtType

us-gaap:MediumTermNotes



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value0.03440.03440.03440.03340.03330.0326
Percentage of LongtermDebtWeightedAverageInterestRate244.0105.5103.398.8104.4101.6

us-gaap:ProductOrService, dei:LegalEntity

us-gaap:LossContingencyAccrualProductLiabilityNet

dow:BreastImplantandOtherProductsLiabilityClaims, dow:DowSiliconesCorporation



Period End2020-03-312019-12-312019-09-302018-12-31
Value165165165263
Percentage of LossContingencyAccrualProductLiabilityNet100.0100.0100.0100.0

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

dow:BreastImplantandOtherProductsLiabilityClaims, dow:AccruedAndOtherCurrentLiabilities, dow:DowSiliconesCorporation



Period End2020-03-312019-12-312019-09-302018-12-31
Value45200111
Percentage of LossContingencyAccrualProductLiabilityNet27.312.10.042.2

dow:BreastImplantandOtherProductsLiabilityClaims, dow:OtherNoncurrentObligations, dow:DowSiliconesCorporation



Period End2020-03-312019-12-312019-09-302018-12-31
Value120145165152
Percentage of LossContingencyAccrualProductLiabilityNet72.787.9100.057.8

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:MarketableSecurities

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1211120101100
Percentage of MarketableSecurities100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1211120101100
Percentage of MarketableSecurities100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeaseLiabilityCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value3844214184214770
Percentage of OperatingLeaseLiabilityCurrent100.0100.0100.0100.0100.00.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value3844214184210
Percentage of OperatingLeaseLiabilityCurrent100.0100.0100.0100.00.0

us-gaap:OperatingLeaseLiabilityNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value162217391735177921260
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0100.0100.0100.00.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value16221739173517790
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0100.0100.00.0

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent



Period End2020-03-312019-12-31
Value0.0410.0409
Percentage of OperatingLeaseWeightedAverageDiscountRatePercent100.0100.0

us-gaap:OtherInventorySupplies



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value860845824837891880
Percentage of OtherInventorySupplies100.0100.0100.0100.0100.0100.0

us-gaap:OtherInvestmentsAndSecuritiesAtCost



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value134314871615160917611756
Percentage of OtherInvestmentsAndSecuritiesAtCost100.0100.0100.0100.0100.0100.0

us-gaap:OtherLongTermInvestments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value213625882737255827372648
Percentage of OtherLongTermInvestments100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value21362588273725582646
Percentage of OtherLongTermInvestments100.0100.0100.0100.099.9

us-gaap:OtherReceivablesNetCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value277027113683290839474136
Percentage of OtherReceivablesNetCurrent100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value27702716368729123389
Percentage of OtherReceivablesNetCurrent100.0100.2100.1100.181.9

us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

dow:EQUATEPetrochemicalCompanyKscAndTheKuwaitOlefinsCompanyKSCC



Period End2020-03-31
Value276
Percentage of OtherReceivablesNetCurrent10.0

us-gaap:DebtInstrument

us-gaap:OtherShortTermBorrowings

dow:COLIMonetization



Period End2020-03-312019-12-31
Value28785
Percentage of OtherShortTermBorrowings100.0100.0

us-gaap:RestrictedCashAndCashEquivalents



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value12131637434031451819
Percentage of RestrictedCashAndCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value121316374340314519
Percentage of RestrictedCashAndCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BalanceSheetLocation, us-gaap:RestructuringPlan

us-gaap:RestructuringReserve

dow:AccruedAndOtherCurrentLiabilities, dow:DowDuPontCostSynergyProgram



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value10452107139250272
Percentage of RestructuringReserve100.0100.0100.0100.0100.0100.0

us-gaap:OtherNoncurrentLiabilities, dow:DowDuPontCostSynergyProgram



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value141920207555
Percentage of RestructuringReserve13.536.518.714.430.020.2

us-gaap:RestructuringCostAndReserve, us-gaap:RestructuringPlan

dow:CostsAssociatedwithExitandDisposalActivities, dow:DowDuPontCostSynergyProgram



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value1617212288651010165
Percentage of RestructuringReserve15.432.719.615.835.223.90.00.00.00.0

us-gaap:EmployeeSeverance, dow:DowDuPontCostSynergyProgram



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value10254106137237262240253290270
Percentage of RestructuringReserve98.1103.899.198.694.896.30.00.00.00.0

us-gaap:RestructuringPlan

dow:DowDuPontCostSynergyProgram



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value11871127159325327250263306275
Percentage of RestructuringReserve113.5136.5118.7114.4130.0120.20.00.00.00.0

us-gaap:RevenueRemainingPerformanceObligation



Period End2020-03-312019-12-31
Value829826
Percentage of RevenueRemainingPerformanceObligation100.0100.0

us-gaap:ShortTermBorrowings



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1490586517544317305
Percentage of ShortTermBorrowings100.0100.0100.0100.0100.0100.0

us-gaap:CreditFacility, us-gaap:ShortTermDebtType

dow:UncommittedCreditFacility, us-gaap:NotesPayableToBanks



Period End2020-03-31
Value800
Percentage of ShortTermBorrowings53.7

us-gaap:ShortTermDebtType

us-gaap:CommercialPaper



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value25015100010
Percentage of ShortTermBorrowings16.825.80.00.00.03.3

us-gaap:NotesPayableToBanks



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1240435441468317295
Percentage of ShortTermBorrowings83.274.285.386.0100.096.7

us-gaap:ShortTermDebtWeightedAverageInterestRate



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value0.03780.0630.04920.05670.12090.0861
Percentage of ShortTermDebtWeightedAverageInterestRate100.0100.0100.0100.0100.0100.0

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value13461140941798618500281462796933955336732797132701
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value142281486218367182693384833621339553367332701
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest105.7105.4102.198.8120.3120.2100.0100.0100.0

us-gaap:StatementEquityComponents

dow:UnearnedEsopShares



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value-81-91-95-99-105-134-139-145-150-189-239
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-0.6-0.6-0.5-0.5-0.4-0.5-0.4-0.4-0.5-0.60.0

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312018-01-012017-12-312017-01-012016-12-31
Value-10529-10246-9219-8988-9783-9885-9146-9387-8088-9885-8591-8571-9822
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-78.2-72.7-51.3-48.6-34.8-35.3-26.9-27.9-28.90.0-26.30.00.0

us-gaap:AdditionalPaidInCapital



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value73707325723971867153704269536861675865534262
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest54.852.040.238.825.425.220.520.424.220.00.0

us-gaap:CommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value88770000003107
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.10.10.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value1676317045198732011029701298083510635192282612805030338
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest124.5120.9110.5108.7105.5106.6103.4104.5101.085.80.0

us-gaap:TreasuryStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value-625-500-406-305000000-1659
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-4.6-3.5-2.3-1.60.00.00.00.00.00.00.0

us-gaap:StatementEquityComponents, dei:LegalEntity

dow:UnearnedEsopShares, dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312016-12-31
Value-81-91-95-99-105-134-139-145-189-239
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-0.6-0.6-0.5-0.5-0.4-0.5-0.4-0.4-0.60.0

us-gaap:AccumulatedOtherComprehensiveIncome, dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312016-12-31
Value-10529-10246-9219-8988-9783-9885-9146-9387-8591-9822
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-78.2-72.7-51.3-48.6-34.8-35.3-26.9-27.9-26.30.0

us-gaap:AdditionalPaidInCapital, dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312016-12-31
Value7378733372457192715370426953686165534262
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest54.852.040.338.925.425.220.520.420.00.0

us-gaap:CommonStock, dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-06-302019-03-312018-12-312018-06-302017-12-312016-12-31
Value00000003107
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.00.00.00.00.00.00.00.0

us-gaap:NoncontrollingInterest, dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-09-302019-03-312018-09-30
Value55558711801181
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest4.13.34.23.5

us-gaap:RetainedEarnings, dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312016-12-31
Value16905173131984919575354033546035106351923374230338
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest125.6122.8110.4105.8125.8126.8103.4104.5103.20.0

us-gaap:TreasuryStockShares



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1297500
Percentage of TreasuryStockShares100.0100.0100.0100.00.00.0

us-gaap:UnearnedESOPShares



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value81919599105134
Percentage of UnearnedESOPShares100.0100.0100.0100.0100.0100.0

dei:LegalEntity

dow:TheDowChemicalCompanyDomain



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value81919599134
Percentage of UnearnedESOPShares100.0100.0100.0100.0100.0

Line plots across dimensions of each concept

us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:StatementBusinessSegments


us-gaap:Revenues us-gaap:StatementGeographical


us-gaap:Revenues dow:BusinessGroup, us-gaap:StatementBusinessSegments


us-gaap:Revenues dow:BusinessGroup, us-gaap:StatementBusinessSegments


us-gaap:Revenues dow:BusinessGroup, us-gaap:StatementBusinessSegments


us-gaap:Revenues us-gaap:StatementBusinessSegments


us-gaap:Goodwill us-gaap:StatementBusinessSegments


us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass


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