WRK


Line plots across dimensions of each concept
Line plots across concepts
Tables

Table of contents



us-gaap:CommonStockValue

us-gaap:CommonStockSharesOutstanding
us-gaap:StatementEquityComponents

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:ComprehensiveIncomeNetOfTax
us-gaap:ConsolidatedEntities

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

us-gaap:CostOfGoodsAndServicesSold
us-gaap:ConsolidatedEntities

us-gaap:GainsLossesOnExtinguishmentOfDebt
us-gaap:ConsolidatedEntities

us-gaap:GrossProfit
us-gaap:ConsolidatedEntities

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
us-gaap:ConsolidatedEntities

us-gaap:IncomeTaxExpenseBenefit
us-gaap:ConsolidatedEntities

us-gaap:IncomeTaxesPaidNet

us-gaap:InterestExpense

us-gaap:InterestIncomeExpenseNonoperatingNet
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:InterestPaidNet

us-gaap:NetIncomeLoss
us-gaap:ConsolidatedEntities

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest
us-gaap:ConsolidatedEntities
us-gaap:StatementEquityComponents

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted

us-gaap:OperatingIncomeLoss
us-gaap:ConsolidatedEntities

us-gaap:OtherComprehensiveIncomeLossNetOfTax

us-gaap:OtherNonoperatingIncomeExpense
us-gaap:ConsolidatedEntities

us-gaap:ProfitLoss
us-gaap:ConsolidatedEntities

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:MajorCustomers, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems, us-gaap:StatementGeographical
us-gaap:StatementBusinessSegments
us-gaap:StatementGeographical
us-gaap:StatementGeographical, us-gaap:StatementBusinessSegments

us-gaap:Revenues

us-gaap:Assets
us-gaap:ConsolidatedEntities
us-gaap:StatementBusinessSegments

us-gaap:LiabilitiesAndStockholdersEquity
us-gaap:ConsolidatedEntities

us-gaap:StockholdersEquity
us-gaap:ConsolidatedEntities

us-gaap:AssetsCurrent
us-gaap:ConsolidatedEntities

us-gaap:CashAndCashEquivalentsAtCarryingValue
us-gaap:ConsolidatedEntities

us-gaap:AccountsReceivableNetCurrent
us-gaap:ConsolidatedEntities

us-gaap:InventoryNet
us-gaap:ConsolidatedEntities

us-gaap:InventoryFinishedGoodsAndWorkInProcess

us-gaap:InventoryLIFOReserve

us-gaap:OtherAssetsCurrent
us-gaap:ConsolidatedEntities
us-gaap:StatementGeographical
us-gaap:NoncurrentAssets

us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:PropertyPlantAndEquipmentNet
us-gaap:ConsolidatedEntities

us-gaap:Goodwill
us-gaap:ConsolidatedEntities
us-gaap:ReportingUnit
us-gaap:StatementBusinessSegments

us-gaap:IntangibleAssetsNetExcludingGoodwill
us-gaap:ConsolidatedEntities
us-gaap:StatementBusinessSegments

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OtherAssetsNoncurrent
us-gaap:ConsolidatedEntities

us-gaap:AccountsPayableCurrent
us-gaap:ConsolidatedEntities

us-gaap:ContractWithCustomerLiabilityCurrent

us-gaap:DebtCurrent
us-gaap:ConsolidatedEntities

us-gaap:LiabilitiesCurrent
us-gaap:ConsolidatedEntities

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OtherLiabilitiesCurrent
us-gaap:ConsolidatedEntities
us-gaap:CreditFacility, us-gaap:DebtInstrument
us-gaap:LongTermDebt
us-gaap:DebtInstrument
us-gaap:DebtInstrument, us-gaap:ExtinguishmentOfDebt
us-gaap:DebtInstrument, us-gaap:ExtinguishmentOfDebt, us-gaap:LongtermDebtType
us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:LongTermDebtNoncurrent

us-gaap:LongTermDebtAndCapitalLeaseObligations
us-gaap:ConsolidatedEntities

us-gaap:DeferredIncomeTaxLiabilitiesNet
us-gaap:ConsolidatedEntities

us-gaap:MinorityInterest
us-gaap:ConsolidatedEntities

us-gaap:OtherLiabilitiesNoncurrent
us-gaap:ConsolidatedEntities

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:OperatingLeaseLiability

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:StockholdersEquity
us-gaap:ConsolidatedEntities

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

us-gaap:CommonStockValue

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax
us-gaap:StatementEquityComponents

us-gaap:MinorityInterest
us-gaap:ConsolidatedEntities
us-gaap:StatementEquityComponents
us-gaap:NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoptionQuantification
us-gaap:StatementEquityComponents
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

us-gaap:NetCashProvidedByUsedInOperatingActivities
us-gaap:ConsolidatedEntities

us-gaap:NetCashProvidedByUsedInInvestingActivities
us-gaap:ConsolidatedEntities

us-gaap:NetCashProvidedByUsedInFinancingActivities
us-gaap:ConsolidatedEntities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
us-gaap:ConsolidatedEntities

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:DepreciationDepletionAndAmortization
us-gaap:StatementBusinessSegments

us-gaap:IncreaseDecreaseInAccountsPayable

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInInventories

us-gaap:NetCashProvidedByUsedInOperatingActivities
us-gaap:ConsolidatedEntities

us-gaap:NetIncomeLoss
us-gaap:ConsolidatedEntities

us-gaap:ProfitLoss
us-gaap:ConsolidatedEntities

us-gaap:ShareBasedCompensation

us-gaap:NetCashProvidedByUsedInInvestingActivities
us-gaap:ConsolidatedEntities

us-gaap:PaymentsToAcquireProductiveAssets
us-gaap:ConsolidatedEntities

us-gaap:NetCashProvidedByUsedInFinancingActivities
us-gaap:ConsolidatedEntities

us-gaap:ProceedsFromIssuanceOfLongTermDebt
us-gaap:ConsolidatedEntities

us-gaap:PaymentsOfDividendsCommonStock
us-gaap:ConsolidatedEntities

us-gaap:EffectiveIncomeTaxRateContinuingOperations
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:DeferredTaxLiabilities

us-gaap:UnrecognizedTaxBenefits

us-gaap:DeferredTaxAssetsValuationAllowance
us-gaap:StatementEquityComponents
us-gaap:AdjustmentsToAdditionalPaidInCapitalOther

us-gaap:BusinessCombinationAcquisitionRelatedCosts
us-gaap:StatementBusinessSegments

us-gaap:BusinessCombinationIntegrationRelatedCosts
us-gaap:StatementBusinessSegments

us-gaap:CashFlowsBetweenTransfereeAndTransferorProceedsFromCollectionsReinvestedInRevolvingPeriodTransfers

us-gaap:CommonStockDividendsPerShareCashPaid

us-gaap:CostMethodInvestmentsRealizedGains
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanContributionsByEmployer
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanInterestCost
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanServiceCost
us-gaap:StatementEquityComponents
us-gaap:DividendsCommonStockCash

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
us-gaap:ConsolidatedEntities

us-gaap:FinanceLeaseInterestExpense

us-gaap:FinanceLeaseRightOfUseAssetAmortization

us-gaap:GainLossOnDispositionOfAssets1
us-gaap:ConsolidatedEntities

us-gaap:GainLossOnSaleOfPropertyPlantEquipment

us-gaap:GoodwillImpairmentLoss
us-gaap:FairValueByAssetClass
us-gaap:FairValueByAssetClass
us-gaap:GoodwillImpairmentLossNetOfTax

us-gaap:IncomeLossFromEquityMethodInvestments
us-gaap:ConsolidatedEntities

us-gaap:IncreaseDecreaseInAccruedLiabilities

us-gaap:IncreaseDecreaseInContractWithCustomerAsset

us-gaap:IncreaseDecreaseInContractWithCustomerLiability

us-gaap:IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:LeaseCost

us-gaap:NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent

us-gaap:OperatingLeaseCost

us-gaap:OtherAssetImpairmentCharges

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax

us-gaap:OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax
us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
us-gaap:StatementEquityComponents
us-gaap:DerivativeInstrumentRisk, us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax
us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax
us-gaap:DerivativeInstrumentRisk, us-gaap:StatementEquityComponents
us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:StatementEquityComponents
us-gaap:DerivativeInstrumentRisk, us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax
us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax
us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax

us-gaap:OtherOperatingActivitiesCashFlowStatement

us-gaap:OtherRestructuringCosts

us-gaap:ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic

us-gaap:ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDiluted

us-gaap:PaymentsForProceedsFromOtherInvestingActivities
us-gaap:ConsolidatedEntities

us-gaap:PaymentsOfDividendsMinorityInterest
us-gaap:ConsolidatedEntities

us-gaap:PaymentsToAcquireInterestInSubsidiariesAndAffiliates
us-gaap:ConsolidatedEntities

us-gaap:PensionAndOtherPostretirementBenefitExpense
us-gaap:ConsolidatedEntities

us-gaap:ProceedsFromInsuranceSettlementInvestingActivities
us-gaap:ConsolidatedEntities
us-gaap:LiabilityForCatastropheClaimsByCatastrophicEvent, us-gaap:StatementBusinessSegments
us-gaap:LiabilityForCatastropheClaimsByCatastrophicEvent, us-gaap:StatementBusinessSegments
us-gaap:ProceedsFromInsuranceSettlementOperatingActivities

us-gaap:ProceedsFromIssuanceOfDebt
us-gaap:ConsolidatedEntities

us-gaap:ProceedsFromLinesOfCredit
us-gaap:ConsolidatedEntities

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities
us-gaap:ConsolidatedEntities

us-gaap:ProceedsFromRepaymentsOfCommercialPaper
us-gaap:ConsolidatedEntities

us-gaap:ProceedsFromRepaymentsOfOtherDebt
us-gaap:ConsolidatedEntities

us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment
us-gaap:ConsolidatedEntities

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax
us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents
us-gaap:ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent
us-gaap:StatementEquityComponents
us-gaap:ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent
us-gaap:StatementEquityComponents
us-gaap:ReclassificationFromAociCurrentPeriodTax

us-gaap:RepaymentsOfDebt

us-gaap:RepaymentsOfLinesOfCredit
us-gaap:ConsolidatedEntities
us-gaap:DebtInstrument, us-gaap:ExtinguishmentOfDebt
us-gaap:RepaymentsOfUnsecuredDebt

us-gaap:RestructuringAndRelatedCostIncurredCost
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:RestructuringCostAndReserve
us-gaap:RestructuringCostAndReserve
us-gaap:RestructuringCostAndReserve, us-gaap:StatementBusinessSegments
us-gaap:StatementBusinessSegments

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability
us-gaap:AwardType, us-gaap:SubsequentEventType
us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodSharesRestrictedStockAwardGross

us-gaap:SubleaseIncome
us-gaap:AdjustmentsForNewAccountingPronouncements, us-gaap:StatementEquityComponents
us-gaap:TaxCutsAndJobsActOf2017ReclassificationFromAociToRetainedEarningsTaxEffect
us-gaap:IncomeTaxAuthorityName
us-gaap:UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment

wrk:AdditionalAccrualsAndAdjustmentsToAccruals
us-gaap:FairValueByAssetClass
wrk:BasicLossPerShareDueToGoodwillImpairment
us-gaap:ProductOrService, us-gaap:SubsequentEventType
wrk:CapacityRemovedDueToShutDownOfPaperMachines
us-gaap:BusinessAcquisition
wrk:ChargeOnNotExercisingOptionToPurchaseAdditionalEquityInterestInJointVenture

wrk:CostOfRealEstateSold
us-gaap:RetirementPlanType
wrk:DefinedBenefitPlanNetPeriodicBenefitCostCompany
us-gaap:FairValueByAssetClass
wrk:DilutedLossPerShareDueToGoodwillImpairment

wrk:DivestitureRelatedCostsCredits
us-gaap:StatementBusinessSegments
us-gaap:ConsolidatedEntities
wrk:EquityInIncomeLossOfConsolidatedEntities

wrk:EstimatedLossOnSaleOfAccountsReceivableByQuarter

wrk:FourZeroOneKMatchAndContributionInCommonStock

wrk:FourZeroOneKMatchInCommonStock

wrk:GainLossOnSaleOfSawmill

wrk:GainOnSaleOfCertainClosedFacilities

wrk:ImpactOfLostSalesAndOperationalDisruption
us-gaap:StatementEquityComponents
wrk:IncomeLossExcludingPortionAttributableToRedeemableNoncontrollingInterest

wrk:IncreaseDecreaseInAccountsReceivableFromTransfersNet
us-gaap:StatementEquityComponents
wrk:IncreaseDecreaseToNonredeemableNoncontrollingInterestsFromDistributionsAndAdjustments
us-gaap:DebtInstrument, us-gaap:SubsequentEventType
wrk:IndentureGoverningRedemptionAmount
us-gaap:ConsolidatedEntities
wrk:IntercompanyCapitalDistributionNonCashFinancingActivities
us-gaap:ConsolidatedEntities
wrk:IntercompanyCapitalInvestmentNonCashInvestingActivities
us-gaap:ConsolidatedEntities
wrk:IntercompanyCapitalReceiptNonCashFinancingActivities
us-gaap:ConsolidatedEntities
wrk:IntercompanyDividendsPaidNonCashFinancingActivities
us-gaap:ConsolidatedEntities
wrk:IntercompanyInterestIncomeExpenseNet
us-gaap:ConsolidatedEntities
wrk:IntercompanyNotesBorrowingNonCashFinancingActivities
us-gaap:ConsolidatedEntities
wrk:IntercompanyNotesIssuedNonCashInvestingActivities
us-gaap:ConsolidatedEntities
wrk:IntercompanyNotesPayments
us-gaap:ConsolidatedEntities
wrk:IntercompanyNotesPaymentsNonCashFinancingActivities
us-gaap:ConsolidatedEntities
wrk:IntercompanyNotesProceeds
us-gaap:ConsolidatedEntities
wrk:IntercompanyNotesProceedsNonCashInvestingActivities
us-gaap:ConsolidatedEntities
wrk:IntercompanyReturnOfCapitalNonCashInvestingActivities

wrk:InterestIncome
us-gaap:StatementEquityComponents
wrk:IssuanceOfClassCommonStockNetOfStockReceivedForMinimumTaxWithholdings

wrk:IssuancesOfCommonStockNetOfRelatedMinimumTaxWithholdings
us-gaap:ConsolidatedEntities

wrk:IssuancesOfCommonStockNetOfRelatedTaxWithholdings

wrk:LostProductionFromRansomwareIncidentToDate
us-gaap:SubsequentEventType
us-gaap:RetirementPlanType
wrk:MultiemployerAndOtherPlansPeriodCost

wrk:MultiemployerPensionWithdrawalIncomeExpense
us-gaap:ConsolidatedEntities
us-gaap:RetirementPlanName
wrk:MultiemployerPlansWithdrawalObligationPerMonth
us-gaap:CumulativeEffectPeriodOfAdoption, us-gaap:StatementEquityComponents
wrk:NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoption
us-gaap:ConsolidationItems
wrk:NonAllocatedExpenses

wrk:PensionFundingMoreLessThanExpense

wrk:ProceedsFromSaleOfCostMethodInvestment

wrk:ProceedsFromSaleOfSawmill

wrk:RansomwareRecoveryCostsExpense
us-gaap:AdjustmentsForNewAccountingPronouncements
wrk:ReclassificationFromCreditLossStandardToRetainedEarnings

wrk:ReductionOfCostOfGoodsSold

wrk:ReductionOfInterestExpenseNet

wrk:RestructuringAndOtherCosts

wrk:RestructuringAndOtherCostsNet
us-gaap:ConsolidatedEntities

wrk:RestructuringAndOtherCostsNetEquipmentAndInventoryRelocationCosts

wrk:RestructuringAndOtherCostsNetFacilityCarryingCosts

wrk:RestructuringAndOtherCostsNetPropertyPlantAndEquipmentCosts

wrk:RestructuringAndOtherCostsNetSeveranceAndOtherEmployeeCosts

wrk:RestructuringAndOtherCostsOther
us-gaap:StatementBusinessSegments

wrk:RestructuringAndOtherCostsReserveAccrualAdjustment

wrk:RestructuringAndOtherCostsReserveForeignCurrencyRateChanges

wrk:RestructuringAndOtherCostsReservePeriodExpense

wrk:RestructuringAndOtherCostsReserveSettledWithCash
us-gaap:ConsolidationItems
wrk:SegmentReportingInformationSegmentIncome
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

wrk:SellingGeneralAndAdministrativeExpenseExcludingIntangibleAmortization
us-gaap:ConsolidatedEntities

wrk:SellingGeneralAndAdministrativeIntangibleAmortization
us-gaap:ConsolidatedEntities
us-gaap:StatementEquityComponents
wrk:StockIssuedDuringPeriodIssuanceOfClassCommonStockNetOfStockReceivedForMinimumTaxWithholdings
us-gaap:StatementEquityComponents
wrk:StockIssuedDuringPeriodIssuanceOfClassCommonStockNetOfStockReceivedForTaxWithholdings
us-gaap:AdjustmentsForNewAccountingPronouncements, us-gaap:StatementEquityComponents
wrk:TaxCutsAndJobsActOf2017ReclassificationFromAociToRetainedEarningsNetOfTax

wrk:VariableAndShortTermLeaseCost

us-gaap:AccrualForEnvironmentalLossContingencies
us-gaap:BalanceSheetLocation

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent

us-gaap:AssetRetirementObligation

us-gaap:AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent
us-gaap:ConsolidatedEntities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
us-gaap:ConsolidatedEntities

us-gaap:ContractWithCustomerAssetNetCurrent
us-gaap:DebtInstrument
us-gaap:DebtInstrumentFaceAmount

us-gaap:DebtInstrumentFairValue

us-gaap:DebtLongtermAndShorttermCombinedAmount
us-gaap:DebtInstrument
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrument, us-gaap:ShortTermDebtType

us-gaap:DebtWeightedAverageInterestRate
us-gaap:DebtInstrument
us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible

us-gaap:DeferredIncomeTaxAssetsNet

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsForeign
us-gaap:IncomeTaxAuthority
us-gaap:IncomeTaxAuthority
us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal

us-gaap:DeferredTaxAssetsOther
us-gaap:IncomeTaxAuthority
us-gaap:DeferredTaxAssetsTaxCreditCarryforwards

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssets

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment

us-gaap:DefinedBenefitPensionPlanLiabilitiesNoncurrent
us-gaap:ConsolidatedEntities
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAccumulatedBenefitObligation
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmountsRecognizedInBalanceSheet

us-gaap:DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent
us-gaap:ConsolidatedEntities
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanBenefitObligation
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedAmortizationNextFiscalYear
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedAmortizationOfPriorServiceCostCreditNextFiscalYear
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:InvestmentType
us-gaap:DefinedBenefitPlanFairValueOfPlanAssets
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:SecurityOwnedAndSoldNotYetPurchasedAtFairValue
us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency, us-gaap:InvestmentType
us-gaap:FairValueByMeasurementFrequency, us-gaap:SecurityOwnedAndSoldNotYetPurchasedAtFairValue
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanFundedStatusOfPlan
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsAccumulatedBenefitObligation
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsPlanAssets
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPlanAssetsTargetAllocationPercentage
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanUltimateHealthCareCostTrendRate1
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanWeightedAverageAssetAllocations
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DebtInstrument, us-gaap:DerivativeInstrumentRisk, us-gaap:LongtermDebtType
us-gaap:DerivativeNotionalAmount
us-gaap:DerivativeInstrumentRisk
us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:DueFromRelatedPartiesCurrent

us-gaap:EmployeeRelatedLiabilitiesCurrent
us-gaap:ConsolidatedEntities
us-gaap:AwardType
us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
us-gaap:BusinessAcquisition, us-gaap:StatementBusinessSegments
us-gaap:EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity

us-gaap:EquityMethodInvestments
us-gaap:StatementBusinessSegments

us-gaap:FIFOInventoryAmount

us-gaap:FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments
us-gaap:InvestmentType

us-gaap:FinanceLeaseLiability

us-gaap:FinanceLeaseLiabilityCurrent

us-gaap:FinanceLeaseLiabilityNoncurrent

us-gaap:FinanceLeaseLiabilityPaymentsDue

us-gaap:FinanceLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:FinanceLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFive

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFour

us-gaap:FinanceLeaseLiabilityPaymentsDueYearThree

us-gaap:FinanceLeaseLiabilityPaymentsDueYearTwo

us-gaap:FinanceLeaseLiabilityUndiscountedExcessAmount

us-gaap:FinanceLeaseWeightedAverageDiscountRatePercent

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo

us-gaap:FiniteLivedIntangibleAssetsGross
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:GoodwillGross
us-gaap:StatementBusinessSegments

us-gaap:GoodwillImpairedAccumulatedImpairmentLoss
us-gaap:StatementBusinessSegments

us-gaap:GuaranteeObligationsCurrentCarryingValue

us-gaap:InventoryRawMaterials

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:LettersOfCreditOutstandingAmount
us-gaap:DebtInstrument, us-gaap:InvestmentType
us-gaap:LineOfCreditFacilityRemainingBorrowingCapacity
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:LoansAndLeasesReceivableCollateralForSecuredBorrowings
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:LoansReceivableBasisSpreadOnVariableRate
us-gaap:DebtInstrument
us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive
us-gaap:DebtInstrument
us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths
us-gaap:DebtInstrument
us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive
us-gaap:DebtInstrument
us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour
us-gaap:DebtInstrument
us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree
us-gaap:DebtInstrument
us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo
us-gaap:LitigationStatus
us-gaap:LossContingencyEstimateOfPossibleLoss

us-gaap:MultiemployerPlansWithdrawalObligation

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

us-gaap:OperatingLossCarryforwards
us-gaap:IncomeTaxAuthority
us-gaap:IncomeTaxAuthority
us-gaap:OperatingLossCarryforwardsValuationAllowance

us-gaap:OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent
us-gaap:ConsolidatedEntities
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities

us-gaap:PercentageOfFIFOInventory

us-gaap:RedeemableNoncontrollingInterestEquityCarryingAmount
us-gaap:ConsolidatedEntities

us-gaap:RestructuringAndRelatedCostCostIncurredToDate1
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:RestructuringCostAndReserve
us-gaap:RestructuringCostAndReserve
us-gaap:RestructuringCostAndReserve, us-gaap:StatementBusinessSegments
us-gaap:StatementBusinessSegments

us-gaap:RestructuringAndRelatedCostExpectedCost1
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:RestructuringCostAndReserve
us-gaap:RestructuringCostAndReserve
us-gaap:RestructuringCostAndReserve, us-gaap:StatementBusinessSegments
us-gaap:StatementBusinessSegments
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
wrk:ScheduleOfShareBasedCompensationArrangementByShareBasedPlanName
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice
us-gaap:AwardType
us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1
us-gaap:IncomeTaxAuthority
us-gaap:TaxCreditCarryforwardValuationAllowance

us-gaap:TransferOfFinancialAssetsAccountedForAsSalesCashProceedsReceivedForAssetsDerecognizedAmount

us-gaap:TransfersOfFinancialAssetsAccountedForAsSaleInitialFairValueOfAssetsObtainedAsProceeds

us-gaap:UndistributedEarningsOfForeignSubsidiaries

us-gaap:UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued

us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate
us-gaap:ValuationAllowancesAndReservesType
us-gaap:ValuationAllowancesAndReservesBalance
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
wrk:DebtInstrumentMaximumBorrowingCapacityAmount

wrk:DeferredMaintenanceCosts

wrk:DeferredTaxAssetLeaseLiabilities

wrk:DeferredTaxAssetStateCreditCarryforwardsNetOfFederalBenefit

wrk:DeferredTaxAssetStateNetOperatingLossCarryforwardsNetOfFederalBenefit

wrk:DeferredTaxAssetsEmployeeRelatedAccrualsAndAllowances

wrk:DeferredTaxLiabilitiesInventoryReserves

wrk:DeferredTaxLiabilitiesRightOfUseAssets

wrk:DeferredTaxLiabilityBookTaxBasisDifferenceInJointVentures

wrk:DeferredTaxLiabilityDeferredGain
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
wrk:DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicCostRateOfCompensationIncrease

wrk:DefinedBenefitPlanAssumptionsUsedMinimumOutstandingParValueOfBondsUsedToDetermineFutureDiscountRate
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
wrk:DefinedBenefitPlanFairValueofPlanAssetsExcludingNetAssetValueInvestments
us-gaap:FairValueByMeasurementFrequency

wrk:DefinedBenefitPlansAssetsMeasuredatNAVFairValueOfPlanAssets
us-gaap:FairValueByMeasurementFrequency
us-gaap:InvestmentType
us-gaap:BusinessAcquisition, us-gaap:StatementBusinessSegments
wrk:EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquityAmortizablePortion

wrk:ExpectedInsuranceClaimReceivable
us-gaap:DebtInstrument
wrk:FairValueofDebtStepUpDeferredFinancingCostsandUnamortizedBondDiscounts

wrk:FinanceLeaseAccumulatedDepreciationPropertyPlantAndEquipment

wrk:FinanceLeasePropertyPlantAndEquipmentGross

wrk:FinanceLeasePropertyPlantAndEquipmentNet
us-gaap:Range
wrk:GuarantorObligationsEstimatedExposureUndiscounted
us-gaap:ConsolidatedEntities
wrk:IntercompanyNotesPayable
us-gaap:ConsolidatedEntities
wrk:IntercompanyNotesReceivable
us-gaap:ConsolidatedEntities
wrk:IntercompanyPayables
us-gaap:ConsolidatedEntities
wrk:IntercompanyReceivables

wrk:InventoriesSuppliesAndSpareParts
us-gaap:ConsolidatedEntities
wrk:InvestmentsInConsolidatedSubsidiaries
us-gaap:LongTermPurchaseCommitmentByCategoryOfItemPurchased
wrk:LongTermPurchaseCommitmentEstimatedAmount

wrk:MaximumEligibleReceivablesThatMayBeSold

wrk:NonRecourseLiabilitiesHeldBySpecialPurposeEntities
us-gaap:BusinessAcquisition, wrk:LoansReceivable
us-gaap:ConsolidatedEntities

wrk:OperatingAndFinanceLeaseLiability

wrk:OperatingAndFinanceLeaseLiabilityPaymentsDue

wrk:OperatingAndFinanceLeaseLiabilityPaymentsDueAfterYearFive

wrk:OperatingAndFinanceLeaseLiabilityPaymentsDueNextTwelveMonths

wrk:OperatingAndFinanceLeaseLiabilityPaymentsDueYearFive

wrk:OperatingAndFinanceLeaseLiabilityPaymentsDueYearFour

wrk:OperatingAndFinanceLeaseLiabilityPaymentsDueYearThree

wrk:OperatingAndFinanceLeaseLiabilityPaymentsDueYearTwo

wrk:OperatingAndFinanceLeaseLiabilityUndiscountedExcessAmount
us-gaap:RetirementPlanType
wrk:Pensionandotherpostretirementplansassets
us-gaap:RetirementPlanType
wrk:Pensionandotherpostretirementplansliabilities

wrk:PercentageOfEmployeesCoveredByCollectiveBargainingAgreements

wrk:PercentageOfEmployeesCoveredByCollectiveBargainingAgreementsExpiringInOneYear

wrk:PercentageOfEmployeesWorkingUnderExpiredCollectiveBargainingAgreement

wrk:ReceivableForExpectedRecoveryAndInterest

wrk:RestrictedAssetsHeldBySpecialPurposeEntities
us-gaap:BusinessAcquisition, wrk:LoansReceivable
us-gaap:ConsolidatedEntities

wrk:RestructuringAndOtherCostsReserve
us-gaap:StatementGeographical
wrk:SegmentReportingInformationPercentageOfLongLivedAssets

wrk:UnamortizedFairMarketValueStepUp

wrk:WeightedAverageInterestRateExcludingFairValueStepUp

Plots across concepts


IncomeStatement
Other Comprehensive Income Loss Net Of Tax
Expenses
Other Nonoperating Income Expense
Balance Sheet
Cash And Cash Equivalents At Carrying Value
Assets
Cash And Cash Equivalents At Carrying Value
Current Assets
Other Assets Current
NonCurrent Assets
Deferred Income Tax Assets Net
PropertyPlantAndEquipmentNet
Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
Liabilities
Operating Lease Liability
Current Liabilities
Contract With Customer Liability Current
Noncurrent Liabilities
Minority Interest
Stockholders Equity
Accumulated Other Comprehensive Income Loss Net Of Tax
Per Share
Common Stock Dividends Per Share Cash Paid
CashFlow
Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInOperatingActivities
Gain Loss On Sale Of Property Plant Equipment
NetCashProvidedByUsedInInvestingActivities
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInFinancingActivities
Net Cash Provided By Used In Financing Activities
Shares
Weighted Average Number Of Shares Outstanding Basic
OperatingLeaseLiability
Operating Lease Liability Current
LesseeOperatingLeaseLiabilityPaymentsDue
Lessee Operating Lease Liability Undiscounted Excess Amount
AccountsReceivable
Allowance For Doubtful Accounts Receivable Current

Tables

  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
us-gaap:CommonStockValue ██▄▄▄▄▄▄▄▄▄▁2.72.72.62.62.62.62.62.62.62.62.62.5NANANA2.5NANANA
us-gaap:CommonStockSharesOutstanding █▇▆▅▄▄▄▃▃▃▂▁266.9265.9263.3260.4259.5259.2258.4257.8257.3256.9255.2253.5NANANA254.5NANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding █▅▁269.0267.0264.8NA260.4260.2259.9NA258.6259.4259.5NA260.6260.3259.2NANANANA
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic █▅▁266.5264.9262.7NA259.4259.0258.2NA257.3256.6254.8NA256.1256.1255.0NANANANA
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount ▁██0.50.60.6NA4.01.80.9NA1.41.60.9NA0.1NA0.1NANANANA
us-gaap:EarningsPerShareBasic ▅▅▅▁▅▅▅▅▅▅▅▅▅▅█▅▆▅▅0.940.420.58-4.450.690.570.541.210.980.630.551.11.050.874.450.771.30.410.32
us-gaap:EarningsPerShareDiluted ▅▅▅▁▅▅▅▅▅▅▅▅▅▅█▅▆▅▅0.930.420.57-4.450.690.570.531.20.980.620.541.081.030.864.380.761.290.40.32
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
 COGS Ratio us-gaap:ConsolidatedEntities srt:GuarantorSubsidiariesNANANA605.8604.9630.9589.3637.8643.0639.2623.3676.1673.1633.7608.0NANANANA
 COGS Ratio us-gaap:ConsolidatedEntities srt:NonGuarantorSubsidiariesNANANA4507.54293.64479.14460.54716.24676.34638.13901.44249.24138.24034.33477.3NANANANA
 EBT Margin us-gaap:ConsolidatedEntities srt:GuarantorSubsidiariesNANANA605.8604.9630.9589.3637.8643.0639.2623.3676.1673.1633.7608.0NANANANA
 EBT Margin us-gaap:ConsolidatedEntities srt:NonGuarantorSubsidiariesNANANA4507.54293.64479.14460.54716.24676.34638.13901.44249.24138.24034.33477.3NANANANA
 Gross Margin us-gaap:ConsolidatedEntities srt:GuarantorSubsidiariesNANANA605.8604.9630.9NA637.8643.0639.2NANANANANANANANANA
 Gross Margin us-gaap:ConsolidatedEntities srt:NonGuarantorSubsidiariesNANANA4507.54293.64479.1NA4716.24676.34638.1NANANANANANANANANA
 Net profit Margin us-gaap:ConsolidatedEntities srt:GuarantorSubsidiariesNANANA605.8604.9630.9589.3637.8643.0639.2623.3676.1673.1633.7608.0NANANANA
 Net profit Margin us-gaap:ConsolidatedEntities srt:NonGuarantorSubsidiariesNANANA4507.54293.64479.14460.54716.24676.34638.13901.44249.24138.24034.33477.3NANANANA
 Operating Margin us-gaap:ConsolidatedEntities srt:GuarantorSubsidiariesNANANA605.8604.9630.9589.3637.8643.0639.2623.3676.1673.1633.7608.0NANANANA
 Operating Margin us-gaap:ConsolidatedEntities srt:NonGuarantorSubsidiariesNANANA4507.54293.64479.14460.54716.24676.34638.13901.44249.24138.24034.33477.3NANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
 TTM Greenblatt ROC _ _▇▇▇▁▇▇▇██▇▇█382.3197.1233.0-1054.9271.6274.4252.7490.3421.4305.3277.4518.3NANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
us-gaap:ComprehensiveIncomeNetOfTax ▆▅▆▁▅▄▅▄▅▅▅▅▅▅█403.633.5356.6-1088.5210.1-236.0246.2-63.0282.7189.779.6258.635.6279.11094.8NANANANA
us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest ▅▆▅▅▆▄▅▄▅▅▄▃█▆▁1.21.90.91.11.80.51.10.51.41.00.70.03.11.5-1.4NANANANA
us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest ▆▅▆▁▅▄▅▄▅▅▅▅▅▅█404.835.4357.5-1087.4211.9-235.5247.3-62.5284.1190.780.3258.638.7280.61093.4NANANANA
us-gaap:CostOfGoodsAndServicesSold █▇▆▆▅▆▆▆▇▇▆▄▄▃▃▄▂▂▁3886.43688.23648.63658.13466.33642.53614.73572.93701.13720.43545.63294.93264.33220.43111.63282.63000.12980.92855.9
us-gaap:GainsLossesOnExtinguishmentOfDebt ██▁▅▄▅0.00.0-1.1-0.4-0.6-0.5NA-0.4-3.20.4-1.9-0.10.90.1-1.0-0.12.0-0.1NA
 us-gaap:GainsLossesOnExtinguishmentOfDebt us-gaap:ConsolidatedEntities srt:NonGuarantorSubsidiariesNANANA0.00.0-0.1NA0.0-0.10.0-0.1-0.1-0.1-0.1-0.1NANANANA
 us-gaap:GainsLossesOnExtinguishmentOfDebt us-gaap:ConsolidatedEntities srt:SubsidiaryIssuerNANANA-0.4-0.6-0.4NA-0.4-0.80.0-1.80.20.0-0.7-0.9NANANANA
us-gaap:GrossProfit ▅▁▁▂▁▂▂█▆▄▂929.9749.6752.9813.4770.0804.8809.01078.7988.9899.6781.8NANANANANANANANA
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest █▇▇▁▇▇▇██▇▇██▇▆328.4144.9202.8-1114.5199.2206.7186.0401.7331.4209.1202.5375.4355.8243.360.3NANANANA
us-gaap:IncomeTaxExpenseBenefit ▂▂▂▂▂▂▂▁▂▂▂▁▁▁█77.430.550.340.019.257.846.5-89.377.647.262.7-95.4-84.5-18.81073.2NANANANA
us-gaap:IncomeTaxesPaidNet ▇▇▅▇▄▅▆▆█▆▇▁▆▅▆58.463.418.856.315.830.045.148.083.838.555.8-48.339.028.041.8NANANANA
us-gaap:InterestExpense ▆▁▄█▅▅▇114.094.9105.5124.3109.9112.1119.2NANANANANANANANANANANANA
us-gaap:InterestIncomeExpenseNonoperatingNet ▃▅▄▂▄▃▄▁▁▁▄▇▆▆█-102.5-83.5-93.8-110.3-92.4-97.3-93.5-114.0-111.1-111.8-94.4-74.0-76.7-78.3-64.8NANANANA
 us-gaap:InterestIncomeExpenseNonoperatingNet us-gaap:ConsolidatedEntities srt:GuarantorSubsidiariesNANANA-35.6-33.5-33.6-35.2-34.6-36.9-42.0-49.9-42.8-43.0-43.5-44.2NANANANA
 us-gaap:InterestIncomeExpenseNonoperatingNet us-gaap:ConsolidatedEntities srt:NonGuarantorSubsidiariesNANANA-13.71.70.16.4-11.1-7.7-4.82.5-8.0-11.5-6.1-5.3NANANANA
 us-gaap:InterestIncomeExpenseNonoperatingNet us-gaap:ConsolidatedEntities srt:SubsidiaryIssuerNANANA-61.0-60.6-63.8-64.7-68.3-66.5-65.0-47.0-11.4-21.6-28.6-15.3NANANANA
 us-gaap:InterestIncomeExpenseNonoperatingNet us-gaap:ConsolidationItems us-gaap:CorporateNonSegment▃▅▄▂▄▃▄▁▁▁▄▇▆▆█-102.5-83.5-93.8-110.3-92.4-97.3-93.5-114.0-111.1-111.8-94.4-74.0-76.7-78.3-64.8NANANANA
us-gaap:InterestPaidNet ▂▆▂▇▂▇▃▇▂█▁▆▁▅▁38.1132.742.0144.047.0151.353.1162.647.0177.925.0133.216.1107.927.2NANANANA
us-gaap:NetIncomeLoss ▅▅▅▁▅▅▅▅▅▅▅▅▅▅█▅▆▅▅250.1112.5152.0-1156.0178.5148.1138.5310.8252.6160.4139.1279.6268.2223.21135.1196.1328.1103.180.9
us-gaap:NetIncomeLossAttributableToNoncontrollingInterest ▅▆▄▆▆▅▅▆▅▆▄▄█▅▁0.91.90.51.51.50.81.01.61.21.50.70.43.11.3-1.6NANANANA
us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic █▁250.1112.4NA-1156.0178.5148.0NA310.7252.6160.4139.1279.6268.2223.21134.9NANANANA
us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted █▁250.1112.4NA-1156.0178.5148.0NA-763.71327.0160.4139.1279.6268.2223.21134.9NANANANA
us-gaap:OperatingIncomeLoss ▇▇▇▁▇▇▇██▇▇█▇▇▆382.3197.1233.0-1054.9271.6274.4252.7490.3421.4305.3277.4518.3385.1283.995.2NANANANA
us-gaap:OtherComprehensiveIncomeLossNetOfTax ▇▅█▆▆▁▇▁▆▆▅▅▃▆▅153.8-79.0205.067.131.9-384.4107.8-374.930.328.8-59.5-21.4-232.656.1-40.1NANANANA
us-gaap:OtherNonoperatingIncomeExpense ▅▁██▃▄▃▅▄▃▃▄▆▄▄6.4-13.420.819.1-5.0-0.9-3.74.73.7-3.3-2.7-0.69.71.12.5NANANANA
us-gaap:ProfitLoss ▅▅▅▁▅▅▅▅▅▅▅▅▅▅█▅▆▅▅251.0114.4152.5-1154.5180.0148.9139.5312.4253.8161.9139.8280.0271.3224.51133.5195.3326.698.278.5
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax █▆▆▆▅▆▆▇▇▇▆▅▅▄▃▄▂▂▁4816.34437.84401.54471.54236.34447.34423.74651.64690.04620.04327.44236.64137.54017.03894.04060.63695.63656.33447.2
us-gaap:Revenues █▆▆▆▅▆▆▇▇▇▆▅▅▄▃▄▂▂▁4816.34437.84401.54471.54236.34447.34423.74651.64690.04620.04327.44236.64137.54017.03894.04060.63695.63656.33447.2
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
us-gaap:Assets ▆▆▅▅▇██▇███▁29414.128971.928836.428779.730277.630960.330936.830156.730812.130693.030666.925360.5NANANA25089.0NANANA
us-gaap:LiabilitiesAndStockholdersEquity ▆▆▅▅▇██▇███▁29414.128971.928836.428779.730277.630960.330936.830156.730812.130693.030666.925360.5NANANA25089.0NANANA
us-gaap:StockholdersEquity ▆▄▄▂▇▆█▇█▇▇▆▆▇▆▁11451.111051.910963.010630.611713.111482.411825.211669.911827.711640.811603.711469.411393.611547.911353.410342.5NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
us-gaap:AssetsCurrent █▅▂▂▃▆▂▂▄▄▄▁5723.75384.64863.84944.75005.95492.24952.64974.35193.75214.05226.04785.1NANANA4490.9NANANA
us-gaap:CashAndCashEquivalentsAtCarryingValue ▇▄▂▂▃█▁▁▁▁▃█549.8334.0253.8251.1291.5640.2156.4151.6179.1154.2260.7636.8NANANA298.1NANANA
us-gaap:AccountsReceivableNetCurrent █▇▁▃▂▄▂▄▆▆▅▁2518.12416.22023.42142.72083.22222.12061.72193.22398.12367.02315.52010.7NANANA1886.8NANANA
us-gaap:InventoryNet ▇▆▆▅▇▇█▆▆▆▆▁2145.62090.92084.62023.42137.72125.42189.72107.52074.22096.92101.81829.6NANANA1797.3NANANA
us-gaap:InventoryFinishedGoodsAndWorkInProcess ▅▄▂▁▅▇█▅▅▆▄▂944.6917.8864.5844.2937.1982.61000.5938.9930.4956.5921.0867.0NANANA905.0NANANA
us-gaap:InventoryLIFOReserve █▄▂▁▂▃▃▄▆▇▆▅170.1129.2100.993.8101.2118.2120.1129.9150.4164.4145.6135.6NANANA82.6NANANA
us-gaap:OtherAssetsCurrent ▇▇▆▇▆▇▇▇▇█▇▁500.4529.8492.6520.5490.2501.2537.5496.2515.7562.4508.9248.5NANANA329.2NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
 us-gaap:NoncurrentAssets us-gaap:StatementGeographical wrk:ForeignOperationsNANANA1390.6NANANA1466.4NANANA1400.2NANANA1558.3NANANA
us-gaap:PropertyPlantAndEquipmentGross █▇▇▇▇▆▇▆▆▅▅▁18581.118226.018216.317915.517797.217664.817811.517461.317211.216848.116531.814419.9NANANA13682.5NANANA
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment █▇▇▆▅▄▄▄▃▂▂▁7949.87653.57432.07136.66874.66628.56530.46271.86041.95818.75562.15337.4NANANA4564.2NANANA
us-gaap:PropertyPlantAndEquipmentNet ▆▆▆▆▇▇███▇▇▁10631.310572.510784.310778.910922.611036.311281.111189.511169.311029.410969.79082.5NANANA9118.3NANANA
us-gaap:Goodwill ▃▃▃▃███████▁5982.75959.15997.05962.27270.57264.07327.07285.67321.97300.97320.35577.6NANANA5528.3NANANA
us-gaap:IntangibleAssetsNetExcludingGoodwill ▃▃▄▄▅▅▆▆▇██▁3418.03499.93598.13667.23749.43845.93968.04059.54174.84277.94352.03122.0NANANA3329.3NANANA
us-gaap:OperatingLeaseRightOfUseAsset ▆▆█▂▁▅▇695.7696.4709.5658.6649.2683.2696.8NANANANANANANANANANANANA
us-gaap:OtherAssetsNoncurrent █▇█▇▇▇█▁▂▁▁▁1925.61855.01922.71790.51754.11772.41878.21148.81213.11145.41091.11092.3NANANA966.8NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
us-gaap:AccountsPayableCurrent █▆▄▄▁▄▆▇▄▄▄▅1906.11796.81672.21674.21513.51696.41781.01831.81706.81702.01679.51716.8NANANA1492.1NANANA
us-gaap:ContractWithCustomerLiabilityCurrent █▇▇▃▅██▁▃▃▂▁22.721.922.412.016.923.822.87.711.412.410.27.9NANANANANANANA
us-gaap:DebtCurrent ▃▃▁▁▁▂▃▃▄█▆▄565.7549.5168.7222.9213.1432.0565.1561.1779.11422.41092.8740.7NANANA608.7NANANA
us-gaap:LiabilitiesCurrent ▇▅▂▂▁▃▅▅▅█▆▄3844.03552.73049.12928.92786.93139.83446.83435.13590.54046.63729.93333.3NANANA3009.8NANANA
us-gaap:OperatingLeaseLiabilityCurrent █▆▇▁185.0181.9183.6172.7NANANANANANANANANANANANANANANA
us-gaap:OtherLiabilitiesCurrent █▆█▅▆▅▇▃▆▃▄▁760.2691.3754.6645.1683.1629.9725.0571.8676.8541.6592.4476.5NANANA492.3NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
 us-gaap:LongTermDebt us-gaap:CreditFacility,us-gaap:DebtInstrument wrk:DelayedDrawTermLoanCreditAgreement,wrk:FiveYearTermLoanNANANA648.9898.4NANA1396.91484.11483.91484.0NANANANANANANANA
 us-gaap:LongTermDebt us-gaap:DebtInstrument wrk:LongtermDebtExcludingFinanceLeaseObligationsNANANA9155.8NANANANANANANANANANANANANANANA
 us-gaap:LongTermDebt us-gaap:DebtInstrument,us-gaap:ExtinguishmentOfDebt wrk:WellsFargoBankNACreditFacility,wrk:TerminatedUnsecuredTermLoanFacilityNANANA648.9NANANANANANANANANANANANANANANA
 us-gaap:LongTermDebt us-gaap:DebtInstrument,us-gaap:ExtinguishmentOfDebt,us-gaap:LongtermDebtType wrk:BankOfAmericaFiveYearTermLoan,wrk:TerminatedUnsecuredTermLoanFacility,wrk:UnsecuredNANANA300.0NANANANANANANANANANANANANANANA
 us-gaap:LongTermDebt us-gaap:DebtInstrument,us-gaap:LongtermDebtType wrk:BankOfAmericaFiveYearTermLoan,wrk:UnsecuredNA250.0250.0300.0NANANANANANANANANANANANANANANA
 us-gaap:LongTermDebt us-gaap:DebtInstrument,us-gaap:LongtermDebtType wrk:BrazilDelayedDrawCreditFacilities,us-gaap:UnsecuredDebtNANANA695.1NANANA199.5125.0NANANANANANANANANANA
 us-gaap:LongTermDebt us-gaap:DebtInstrument,us-gaap:LongtermDebtType wrk:CooperatieveRabobankUANewYorkBranchRevolvingLineofCredit,us-gaap:UnsecuredDebt▄▅▇▁▂▃▄▄▅██▄330.0370.0420.0250.0285.0310.0330.0350.0370.0460.0460.0355.0NANANANANANANA
 us-gaap:LongTermDebt us-gaap:DebtInstrument,us-gaap:LongtermDebtType wrk:FarmCreditFacility,us-gaap:UnsecuredDebt█▄▄▁598.9598.8598.8598.7NANANA598.6NANANANANANANANANANANA
us-gaap:LongTermDebtNoncurrent ▅▅▆▆▇█▇▇▇▆▇▁8106.98393.18771.19207.79840.310424.69649.39502.39759.19373.19728.05674.5NANANA5946.1NANANA
us-gaap:LongTermDebtAndCapitalLeaseObligations ▅▅▆▆▇█▇▇▇▆▇▁8106.98393.18771.19207.79840.310424.69649.39502.39759.19373.19728.05674.5NANANA5946.1NANANA
us-gaap:DeferredIncomeTaxLiabilitiesNet ▃▁▇█▃2885.32872.62910.82916.92888.2NANA2878.0NANANANANANANANANANANA
us-gaap:MinorityInterest █▇▆▆▆▄▄▃▃▂▁▂19.418.117.116.916.815.615.314.313.612.811.813.0NANANA43.6NANANA
us-gaap:OtherLiabilitiesNoncurrent ███▇▇▇█▂▃▃▃▁1527.21503.81534.11490.31468.81450.61513.01053.91116.21119.31113.2994.8NANANA737.4NANANA
us-gaap:OperatingLeaseLiabilityNoncurrent ▅▆█▁568.9573.2585.3545.8NANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo NANANA151.4NANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree NANANA119.1NANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour NANANA94.1NANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive NANANA63.2NANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive NANANA164.4NANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
us-gaap:StockholdersEquity ▆▄▄▂▇▆█▇█▇▇▆▆▇▆▁11451.111051.910963.010630.611713.111482.411825.211669.911827.711640.811603.711469.411393.611547.911353.410342.5NANANA
us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest ▆▄▄▂▇▆█▇█▇▇▆▆▇▆▁11470.511070.010980.110647.511729.911498.011840.511684.211841.311653.611615.511482.411412.811582.211393.610386.1NANANA
us-gaap:CommonStockValue ██▄▄▄▄▄▄▄▄▄▁2.72.72.62.62.62.62.62.62.62.62.62.5NANANA2.5NANANA
us-gaap:AdditionalPaidInCapitalCommonStock █▇▆▅▅▄▃▃▃▂▃▁11118.411057.510949.410916.310857.610784.410770.010739.410715.410692.510720.610588.9NANANA10624.9NANANA
us-gaap:RetainedEarningsAccumulatedDeficit ▃▂▂▁█▇▇▇▅▅▄▄1370.81186.01126.31031.62240.32114.42087.51997.11805.11671.21635.31573.3NANANA172.4NANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▄▃▃▂▁▁▄▄▆▆▆▆▆███-1040.8-1194.3-1115.3-1319.9-1387.4-1419.0-1034.9-1069.2-695.4-725.5-754.8-695.3-674.3-441.7-497.6-457.3NANANA
 us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents us-gaap:AccumulatedDefinedBenefitPlansAdjustment▂▂▂▂▁▁▁▂████████-705.9-714.4-721.1-727.7-743.1-752.9-762.3-698.0-452.3-457.1-460.5-465.9-454.0-458.8-462.0-462.5NANANA
 us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents us-gaap:AccumulatedGainLossNetCashFlowHedgeParent▆▅▄▃▁▁▆█▇-1.3-2.8-4.2-5.6-7.2-7.6-1.10.7-0.2NANA-0.2NANANANANANANA
 us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents us-gaap:AccumulatedTranslationAdjustment▄▃▄▂▁▁▅▄▅▅▅▅▆█▇█-333.6-477.1-390.0-586.6-637.1-658.5-271.5-371.9-242.9-268.2-294.1-229.2-220.117.3-36.85.2NANANA
us-gaap:MinorityInterest █▇▆▆▆▄▄▃▃▂▁▂19.418.117.116.916.815.615.314.313.612.811.813.0NANANA43.6NANANA
 us-gaap:NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoptionQuantification us-gaap:StatementEquityComponents us-gaap:RetainedEarningsNANANA0.00.00.073.50.00.00.043.5NANANANANANANANA
 us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue us-gaap:StatementEquityComponents us-gaap:AdditionalPaidInCapital▂▃▂▃█▁▁▁▁▂▂▂▁▂▁23.431.019.931.90000000000001668.916.013.512.815.918.217.917.715.519.414.3NANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▅▁▅▅▅▁▃▆▅▂▂█▄▂▂750.8132.2719.4731.6999999999998740.2167.6431.2910.6734.6361.9303.11285.3661.9228.3245.4NANANANA
us-gaap:NetCashProvidedByUsedInInvestingActivities ██████▇▇▇█▁▇███-190.3-54.8-140.4-96.1-236.1-228.4-360.9-378.9-350.1-277.8-3572.8-755.1-102.7-250.5-190.6NANANANA
 us-gaap:NetCashProvidedByUsedInInvestingActivities us-gaap:ConsolidatedEntities srt:ConsolidationEliminationsNANANA-0.7-1.9-0.1-3.0-2.4-73.1-0.6-2608.21.4745.0-746.4-83.7NANANANA
 us-gaap:NetCashProvidedByUsedInInvestingActivities us-gaap:ConsolidatedEntities srt:GuarantorSubsidiariesNANANA6.86.90.18.06.922.44.62.9-9.9-415.2443.984.3NANANANA
 us-gaap:NetCashProvidedByUsedInInvestingActivities us-gaap:ConsolidatedEntities srt:NonGuarantorSubsidiariesNANANA-103.7-241.1-228.4-365.9-383.5-299.4-281.7149.2-260.8168.5-549.0-191.2NANANANA
us-gaap:NetCashProvidedByUsedInFinancingActivities ▂▃▂▁▁▄▂▂▂▂█▂▂▃▃-356.7-0.5-584.1-669.0-859.2568.4-61.3-559.3-365.3-191.82896.6-335.9-356.9-16.8-45.5NANANANA
 us-gaap:NetCashProvidedByUsedInFinancingActivities us-gaap:ConsolidatedEntities srt:ConsolidationEliminationsNANANA0.71.90.13.02.4-499.30.63180.6-1.3-1030.91020.7123.6NANANANA
 us-gaap:NetCashProvidedByUsedInFinancingActivities us-gaap:ConsolidatedEntities srt:GuarantorSubsidiariesNANANA0.0NANANA2.2-672.3-357.575.7-1.6248.4-272.4-5.8NANANANA
 us-gaap:NetCashProvidedByUsedInFinancingActivities us-gaap:ConsolidatedEntities srt:NonGuarantorSubsidiariesNANANA-43.2-551.4488.648.5-147.7498.9159.9-1245.4-130.9672.1-757.9-53.8NANANANA
 us-gaap:NetCashProvidedByUsedInFinancingActivities us-gaap:ConsolidatedEntities srt:ParentCompanyNANANA-46.4-48.6-122.8-104.5-107.5-111.6-171.7415.6-0.10.0NANANANANANA
 us-gaap:NetCashProvidedByUsedInFinancingActivities us-gaap:ConsolidatedEntities srt:SubsidiaryIssuerNANANA-580.1-156.1202.5-8.3-308.7419.0176.9470.1-202.0-246.5-3.2-109.5NANANANA
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect ▆▅▄▄▁█▄▄▄▃▁▆▆▄▄215.880.22.7-40.4-348.7483.84.8-27.524.9-106.5-376.1184.2180.2-39.98.3NANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
us-gaap:DeferredIncomeTaxExpenseBenefit █▇▇█████▇█████▁1.0-35.0-19.626.94.78.33.10.7-3.225.314.393.360.011.9-1234.6NANANANA
us-gaap:DepreciationDepletionAndAmortization ▇▆▆▆▆▇████▆▂▂▂▁369.0361.4364.5365.6365.7374.5381.2383.1385.3383.7359.1314.3315.4316.3306.2NANANANA
us-gaap:IncreaseDecreaseInAccountsPayable ▆▆▄▇▁▃▃▆▄▄▁█▅▅▂85.7116.9-5.4153.7-133.4-59.2-47.587.217.15.1-148.5191.356.322.1-89.4NANANANA
us-gaap:IncreaseDecreaseInAccountsReceivable ▅█▃▅▃▆▂▂▄▅▂▁▅▇▄76.4407.2-150.251.9-142.8214.3-153.9-179.023.452.4-169.7-304.0149.9268.628.9NANANANA
us-gaap:IncreaseDecreaseInInventories ▇▆▆▁▅▄█▇▄▅█▆▃▅█50.9000000000000135.644.3-92.57.5-20.783.971.0-28.0-3.971.431.3-42.29.074.0NANANANA
us-gaap:NetCashProvidedByUsedInOperatingActivities ▅▁▅▅▅▁▃▆▅▂▂█▄▂▂750.8132.2719.4731.6999999999998740.2167.6431.2910.6734.6361.9303.11285.3661.9228.3245.4NANANANA
us-gaap:NetIncomeLoss ▅▅▅▁▅▅▅▅▅▅▅▅▅▅█▅▆▅▅250.1112.5152.0-1156.0178.5148.1138.5310.8252.6160.4139.1279.6268.2223.21135.1196.1328.1103.180.9
us-gaap:ProfitLoss ▅▅▅▁▅▅▅▅▅▅▅▅▅▅█▅▆▅▅251.0114.4152.5-1154.5180.0148.9139.5312.4253.8161.9139.8280.0271.3224.51133.5195.3326.698.278.5
us-gaap:ShareBasedCompensation ▂▃▂▃█▁▁▁▁▂▂▂▁▂▁23.331.120.031.90000000000001668.815.813.812.915.818.117.417.615.319.314.6NANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
us-gaap:NetCashProvidedByUsedInInvestingActivities ██████▇▇▇█▁▇███-190.3-54.8-140.4-96.1-236.1-228.4-360.9-378.9-350.1-277.8-3572.8-755.1-102.7-250.5-190.6NANANANA
 us-gaap:NetCashProvidedByUsedInInvestingActivities us-gaap:ConsolidatedEntities srt:ConsolidationEliminationsNANANA-0.7-1.9-0.1-3.0-2.4-73.1-0.6-2608.21.4745.0-746.4-83.7NANANANA
 us-gaap:NetCashProvidedByUsedInInvestingActivities us-gaap:ConsolidatedEntities srt:GuarantorSubsidiariesNANANA6.86.90.18.06.922.44.62.9-9.9-415.2443.984.3NANANANA
 us-gaap:NetCashProvidedByUsedInInvestingActivities us-gaap:ConsolidatedEntities srt:NonGuarantorSubsidiariesNANANA-103.7-241.1-228.4-365.9-383.5-299.4-281.7149.2-260.8168.5-549.0-191.2NANANANA
us-gaap:PaymentsToAcquireProductiveAssets ▃▁▂▁▄▄██▇▆▆▇▄▃▃202.4132.3170.7117.9244.0241.4374.8392.3351.4303.4322.0334.4238.8212.6214.1NANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
us-gaap:NetCashProvidedByUsedInFinancingActivities ▂▃▂▁▁▄▂▂▂▂█▂▂▃▃-356.7-0.5-584.1-669.0-859.2568.4-61.3-559.3-365.3-191.82896.6-335.9-356.9-16.8-45.5NANANANA
 us-gaap:NetCashProvidedByUsedInFinancingActivities us-gaap:ConsolidatedEntities srt:ConsolidationEliminationsNANANA0.71.90.13.02.4-499.30.63180.6-1.3-1030.91020.7123.6NANANANA
 us-gaap:NetCashProvidedByUsedInFinancingActivities us-gaap:ConsolidatedEntities srt:GuarantorSubsidiariesNANANA0.0NANANA2.2-672.3-357.575.7-1.6248.4-272.4-5.8NANANANA
 us-gaap:NetCashProvidedByUsedInFinancingActivities us-gaap:ConsolidatedEntities srt:NonGuarantorSubsidiariesNANANA-43.2-551.4488.648.5-147.7498.9159.9-1245.4-130.9672.1-757.9-53.8NANANANA
 us-gaap:NetCashProvidedByUsedInFinancingActivities us-gaap:ConsolidatedEntities srt:ParentCompanyNANANA-46.4-48.6-122.8-104.5-107.5-111.6-171.7415.6-0.10.0NANANANANANA
 us-gaap:NetCashProvidedByUsedInFinancingActivities us-gaap:ConsolidatedEntities srt:SubsidiaryIssuerNANANA-580.1-156.1202.5-8.3-308.7419.0176.9470.1-202.0-246.5-3.2-109.5NANANANA
us-gaap:ProceedsFromIssuanceOfLongTermDebt NANANA0.0NANANA0.0999.70.01498.50.00.0NANANANANANA
 us-gaap:ProceedsFromIssuanceOfLongTermDebt us-gaap:ConsolidatedEntities srt:SubsidiaryIssuerNANANA0.0NANANA0.0999.70.01498.50.00.0NANANANANANA
us-gaap:PaymentsOfDividendsCommonStock ▂▁▁▁▁██████▇▇▇▇64.053.252.651.951.9120.7120.0117.2117.0117.6116.1111.2110.3109.8109.6NANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-09-30
Value2700000.02700000.02600000.02600000.02600000.02600000.02600000.02600000.02600000.02600000.02600000.02500000.02500000.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Shares Outstanding

us-gaap:CommonStockSharesOutstanding

us-gaap:CommonStockSharesOutstanding


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-09-30
Value266265263260259259258257257256255253254
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStockSharesOutstanding us-gaap:StatementEquityComponents

us-gaap:CommonStock


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-09-302015-09-30
Value266265263260259259258257257256255253255256254254251257
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0100.00.00.0

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


Weighted
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312018-06-302018-03-312017-12-31
Value269267264260260259258259259260260259
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


Weighted
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312018-06-302018-03-312017-12-31
Value266264262259259258257256254256256255
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount


Antidilutive
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312018-06-302017-12-31
Value500000.0600000.0600000.04000000.01800000.0900000.01400000.01600000.0900000.0100000.0100000.0
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value0.940.420.58-4.450.690.570.541.210.980.630.551.11.050.874.450.771.30.410.32
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value0.930.420.57-4.450.690.570.531.20.980.620.541.081.030.864.380.761.290.40.32
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value40333356-1088.5210-236.0246-63.028218979258352791094
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.40.88.1-24.35.0-5.35.6-1.46.04.11.86.10.96.928.1

us-gaap:ComprehensiveIncomeNetOfTax us-gaap:ConsolidatedEntities

srt:ConsolidationEliminations


Comprehensive
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value2278-738.7622-826.1-22.0-589.1-616.9-377.9-402.015-502.7-1930.5
Percentage of ComprehensiveIncomeNetOfTax-209.3-351.6-263.9-335.534.9-208.4-325.2-474.7-155.542.4-180.1-176.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax51.0-17.414.0-18.7-0.5-12.6-13.4-8.7-9.50.4-12.5-49.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations0.0111.6-94.0131.90.093.693.9191.50.0-2.277.21009.1

srt:GuarantorSubsidiaries


Comprehensive
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-915.7250-247.9236-29.212201173160-38.2213985
Percentage of ComprehensiveIncomeNetOfTax84.1119.1105.096.046.34.2106.3217.661.9-107.376.690.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-20.55.9-5.65.3-0.60.34.44.03.8-0.95.325.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:GuarantorSubsidiaries0.041.4-39.340.10.01.931.527.80.0-5.733.8162.1

srt:NonGuarantorSubsidiaries


Comprehensive
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-296.0231-190.1306-4.533224710724123288944
Percentage of ComprehensiveIncomeNetOfTax27.2110.180.6124.47.1117.5130.2135.393.564.9103.586.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-6.65.5-4.36.9-0.17.15.32.55.70.67.224.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries0.05.4-4.26.90.07.15.32.80.00.67.227.2

srt:ParentCompany


Comprehensive
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-1088.5210-236.0246-63.028218979-8.9-0.6-0.1
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0-3.4-1.7-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-24.35.0-5.35.6-1.46.04.11.8-0.2-0.0-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.00.0

srt:SubsidiaryIssuer


Comprehensive
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-1066.9257-184.92835524416897267362791094
Percentage of ComprehensiveIncomeNetOfTax98.0122.478.3115.2-88.486.688.7121.9103.4101.7100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-23.96.1-4.26.41.25.23.62.26.30.97.028.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:SubsidiaryIssuer0.00.00.00.00.00.00.00.00.00.00.00.0

Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value1200000.01900000.0900000.01100000.01800000.0500000.01100000.0500000.01400000.01000000.0700000.003100000.01500000.0-1400000.0
Percentage of ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.00.10.0-0.0

Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value40435357-1087.4211-235.5247-62.528419080258382801093
Percentage of ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.40.88.1-24.35.0-5.35.6-1.36.14.11.96.10.97.028.1

Cost Of Goods And Services Sold

us-gaap:CostOfGoodsAndServicesSold

us-gaap:CostOfGoodsAndServicesSold


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value3886368836483658346636423614357237013720354532943264322031113282300029802855
Percentage of CostOfGoodsAndServicesSold100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax80.783.182.981.881.881.981.776.878.980.581.977.878.980.279.980.881.281.582.8

us-gaap:CostOfGoodsAndServicesSold us-gaap:ConsolidatedEntities

srt:ConsolidationEliminations


Cost
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-634.2-654.4-654.5-618.1-693.3-619.4-657.3-197.3-688.7-673.8-651.0-191.3
Percentage of CostOfGoodsAndServicesSold-17.3-18.9-18.0-17.1-19.4-16.7-17.7-5.6-20.9-20.6-20.2-6.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-14.2-15.4-14.7-14.0-14.9-13.2-14.2-4.6-16.3-16.3-16.2-4.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations0.098.898.898.70.098.4100.0100.00.0100.0100.0100.0

srt:GuarantorSubsidiaries


Cost
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value447485502481522475526500514529512445
Percentage of CostOfGoodsAndServicesSold12.214.013.813.314.612.914.214.115.616.215.914.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.011.511.310.911.210.111.411.612.212.812.711.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:GuarantorSubsidiaries0.080.279.681.70.074.082.480.30.078.780.873.3

srt:NonGuarantorSubsidiaries


Cost
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value384436353794375137433844385032423478341433662866
Percentage of CostOfGoodsAndServicesSold105.1104.9104.2103.8104.8103.9103.591.5105.6104.6104.592.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax86.085.885.384.880.582.083.474.982.182.583.873.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries0.084.784.784.10.082.283.083.10.082.583.482.4

Gains Losses On Extinguishment Of Debt

us-gaap:GainsLossesOnExtinguishmentOfDebt

us-gaap:GainsLossesOnExtinguishmentOfDebt


Gains
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value00-1100000.0-400000.0-600000.0-500000.0-400000.0-3200000.0400000.0-1900000.0-100000.0900000.0100000.0-1000000.0-100000.02000000.0-100000.0
Percentage of GainsLossesOnExtinguishmentOfDebt0.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.0-0.0-0.0-0.0-0.0-0.0-0.10.0-0.0-0.00.00.0-0.0-0.00.1-0.0

us-gaap:GainsLossesOnExtinguishmentOfDebt us-gaap:ConsolidatedEntities

srt:NonGuarantorSubsidiaries


Gains
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value00-100000.00-100000.00-100000.0-100000.0-100000.0-100000.0-100000.0
Percentage of GainsLossesOnExtinguishmentOfDebt-0.0-0.020.0-0.03.10.05.3100.0-11.1-100.010.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.0-0.00.0-0.00.0-0.0-0.0-0.0-0.0-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries0.00.0-0.00.0-0.00.0-0.00.0-0.0-0.0-0.0

srt:SubsidiaryIssuer


Gains
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-400000.0-600000.0-400000.0-400000.0-800000.00-1800000.0200000.00-700000.0-900000.0
Percentage of GainsLossesOnExtinguishmentOfDebt100.0100.080.0100.025.00.094.7-200.00.0-700.090.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.0-0.0-0.0-0.0-0.00.0-0.00.00.0-0.0-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:SubsidiaryIssuer0.00.00.00.00.00.00.00.00.00.00.0

Gross Profit

us-gaap:GrossProfit

us-gaap:GrossProfit


Gross
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value9297497528137708048091078988899781
Percentage of GrossProfit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax19.316.917.118.218.218.118.323.221.119.518.1

us-gaap:GrossProfit us-gaap:ConsolidatedEntities

srt:ConsolidationEliminations


Gross
Period End2020-09-302020-06-302020-03-312019-09-302019-06-30
Value-7.6-7.8-8.2-9.1-9.9
Percentage of GrossProfit-0.9-1.0-1.0-0.8-1.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.2-0.2-0.2-0.2-0.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations0.01.21.20.01.6

srt:GuarantorSubsidiaries


Gross
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value158119128115167112
Percentage of GrossProfit19.415.516.010.716.912.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.52.82.92.53.62.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:GuarantorSubsidiaries0.019.820.40.026.017.6

srt:NonGuarantorSubsidiaries


Gross
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value662658684972831787
Percentage of GrossProfit81.585.585.090.284.187.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax14.815.515.420.917.717.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries0.015.315.30.017.817.0

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

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value328144202-1114.519920618640133120920237535524360
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.83.34.6-24.94.74.64.28.67.14.54.78.98.66.11.5

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest us-gaap:ConsolidatedEntities

srt:ConsolidationEliminations


Income
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value2467-647.0-511.4-503.4-1127.2-501.3-526.1-555.9-447.3-441.0-371.9-2015.7
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest-221.4-324.8-247.4-270.6-280.6-151.3-251.6-274.5-119.2-123.9-152.9-3342.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax55.2-15.3-11.5-11.4-24.2-10.7-11.4-12.8-10.6-10.7-9.3-51.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations0.097.777.280.40.079.780.0281.80.065.457.11053.7

srt:GuarantorSubsidiaries


Income
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-990.4221127130329-13.5168234169190139906
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest88.9111.361.869.982.0-4.180.8115.745.253.457.21503.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-22.15.22.92.97.1-0.33.75.44.04.63.523.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:GuarantorSubsidiaries0.036.720.222.10.0-2.126.437.60.028.222.0149.1

srt:NonGuarantorSubsidiaries


Income
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-274.023525926447939628124338634225935
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest24.6118.4125.6142.0119.2119.6134.4120.2102.996.1106.558.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-6.15.65.86.010.38.46.15.69.18.36.50.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries0.05.55.85.90.08.56.16.20.08.36.41.0

srt:ParentCompany


Income
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-1156.0178148138310252160139-12.0-0.6-0.1
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest103.789.671.674.577.476.276.768.7-3.2-0.2-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-25.94.23.33.16.75.43.53.2-0.3-0.0-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.00.0

srt:SubsidiaryIssuer


Income
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-1161.52101821564091971241412792652171134
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest104.2105.588.484.2102.059.659.769.974.374.689.21881.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-26.05.04.13.58.84.22.73.36.66.45.429.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:SubsidiaryIssuer0.00.00.00.00.00.00.00.00.00.00.00.0

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value77305040195746-89.3774762-95.4-84.5-18.81073
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.60.71.10.90.51.31.1-1.91.71.01.4-2.3-2.0-0.527.6

us-gaap:IncomeTaxExpenseBenefit us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries


Income
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-13.70.64.0-2.3-10.41.9-0.61.8-12.34.90.1-124.5
Percentage of IncomeTaxExpenseBenefit-34.23.16.9-4.911.62.4-1.32.912.9-5.8-0.5-11.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.30.00.1-0.1-0.20.0-0.00.0-0.30.10.0-3.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:GuarantorSubsidiaries0.00.10.6-0.40.00.3-0.10.30.00.70.0-20.5

srt:NonGuarantorSubsidiaries


Income
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value813471661209361751208325-948.1
Percentage of IncomeTaxExpenseBenefit202.5178.1123.0142.6-135.2120.6131.1120.9-126.1-98.3-133.0-88.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.80.81.61.52.62.01.31.82.82.00.6-24.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries0.00.81.61.50.02.01.31.90.02.00.6-27.3

srt:SubsidiaryIssuer


Income
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-27.3-15.6-17.3-17.5-21.0-17.9-14.1-14.9-9.5-3.5-6.3-0.6
Percentage of IncomeTaxExpenseBenefit-68.2-81.2-29.9-37.623.5-23.1-29.9-23.810.04.133.5-0.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.6-0.4-0.4-0.4-0.5-0.4-0.3-0.3-0.2-0.1-0.2-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:SubsidiaryIssuer0.00.00.00.00.00.00.00.00.00.00.00.0

Income Taxes Paid Net

us-gaap:IncomeTaxesPaidNet

us-gaap:IncomeTaxesPaidNet


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value5863185615304548833855-48.3392841
Percentage of IncomeTaxesPaidNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.21.40.41.30.40.71.01.01.80.81.3-1.10.90.71.1

Interest Expense

us-gaap:InterestExpense

us-gaap:InterestExpense


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value11494105124109112119
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.42.12.42.82.62.52.7

Interest Income Expense Nonoperating Net

us-gaap:InterestIncomeExpenseNonoperatingNet

us-gaap:InterestIncomeExpenseNonoperatingNet


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-102500000.0-83500000.0-93800000.0-110300000.0-92400000.0-97300000.0-93500000.0-114000000.0-111100000.0-111800000.0-94400000.0-74000000.0-76700000.0-78300000.0-64800000.0
Percentage of InterestIncomeExpenseNonoperatingNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-2.1-1.9-2.1-2.5-2.2-2.2-2.1-2.5-2.4-2.4-2.2-1.7-1.9-1.9-1.7

us-gaap:InterestIncomeExpenseNonoperatingNet us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries


Interest
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-35600000.0-33500000.0-33600000.0-35200000.0-34600000.0-36900000.0-42000000.0-49900000.0-42800000.0-43000000.0-43500000.0-44200000.0
Percentage of InterestIncomeExpenseNonoperatingNet32.336.334.537.630.433.237.652.957.856.155.668.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.8-0.8-0.8-0.8-0.7-0.8-0.9-1.2-1.0-1.0-1.1-1.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:GuarantorSubsidiaries0.0-5.5-5.3-6.00.0-5.7-6.6-8.00.0-6.4-6.9-7.3

srt:NonGuarantorSubsidiaries


Interest
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-13700000.01700000.0100000.06400000.0-11100000.0-7700000.0-4800000.02500000.0-8000000.0-11500000.0-6100000.0-5300000.0
Percentage of InterestIncomeExpenseNonoperatingNet12.4-1.8-0.1-6.89.76.94.3-2.610.815.07.88.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.30.00.00.1-0.2-0.2-0.10.1-0.2-0.3-0.2-0.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries0.00.00.00.10.0-0.2-0.10.10.0-0.3-0.2-0.2

srt:SubsidiaryIssuer


Interest
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-61000000.0-60600000.0-63800000.0-64700000.0-68300000.0-66500000.0-65000000.0-47000000.0-11400000.0-21600000.0-28600000.0-15300000.0
Percentage of InterestIncomeExpenseNonoperatingNet55.365.665.669.259.959.958.149.815.428.236.523.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.4-1.4-1.4-1.5-1.5-1.4-1.4-1.1-0.3-0.5-0.7-0.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:SubsidiaryIssuer0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:InterestIncomeExpenseNonoperatingNet us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-102500000.0-83500000.0-93800000.0-110300000.0-92400000.0-97300000.0-93500000.0-114000000.0-111100000.0-111800000.0-94400000.0-74000000.0-76700000.0-78300000.0-64800000.0
Percentage of InterestIncomeExpenseNonoperatingNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-2.1-1.9-2.1-2.5-2.2-2.2-2.1-2.5-2.4-2.4-2.2-1.7-1.9-1.9-1.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CorporateNonSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Interest Paid Net

us-gaap:InterestPaidNet

us-gaap:InterestPaidNet


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value3813242144471515316247177251331610727
Percentage of InterestPaidNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.83.01.03.21.13.41.23.51.03.90.63.10.42.70.7

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value250112152-1156.0178148138310252160139279268223113519632810380
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.22.53.5-25.94.23.33.16.75.43.53.26.66.55.629.14.88.92.82.3

us-gaap:NetIncomeLoss us-gaap:ConsolidatedEntities

srt:ConsolidationEliminations


Net
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value2467-647.0-511.4-503.4-1127.2-501.3-526.1-555.9-447.3-441.0-371.9-2015.7
Percentage of NetIncomeLoss-213.4-362.5-345.3-363.5-362.7-198.5-328.0-399.6-160.0-164.4-166.6-177.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax55.2-15.3-11.5-11.4-24.2-10.7-11.4-12.8-10.6-10.7-9.3-51.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations0.097.777.280.40.079.780.0281.80.065.457.11053.7

srt:GuarantorSubsidiaries


Net
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-976.7221123132339-15.41692321811851391030
Percentage of NetIncomeLoss84.5123.983.595.6109.3-6.1105.7167.165.069.062.390.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-21.85.22.83.07.3-0.33.75.44.34.53.526.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:GuarantorSubsidiaries0.036.619.622.50.0-2.426.537.30.027.521.9169.6

srt:NonGuarantorSubsidiaries


Net
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-356.5200187196356301217167265255232984
Percentage of NetIncomeLoss30.8112.2126.7142.2114.8119.3135.7120.195.095.4104.386.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-8.04.74.24.57.76.44.73.96.36.25.825.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries0.04.74.24.40.06.44.74.30.06.25.828.3

srt:ParentCompany


Net
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-1156.0178148138310252160139-8.9-0.6-0.1
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0-3.2-0.2-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-25.94.23.33.16.75.43.53.2-0.2-0.0-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.00.0

srt:SubsidiaryIssuer


Net
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-1134.22252001744302151381562882682231135
Percentage of NetIncomeLoss98.1126.4135.0125.7138.685.286.6112.5103.2100.2100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-25.45.34.53.99.34.63.03.66.86.55.629.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:SubsidiaryIssuer0.00.00.00.00.00.00.00.00.00.00.00.0

Net Income Loss Attributable To Noncontrolling Interest

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0.91.90.51.51.50.81.01.61.21.50.70.43.11.3-1.6
Percentage of NetIncomeLossAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.00.10.0-0.0

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest us-gaap:ConsolidatedEntities

srt:NonGuarantorSubsidiaries


Net
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value1.51.50.81.01.61.21.50.70.43.11.3-1.6
Percentage of NetIncomeLossAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.00.00.00.00.00.10.0-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries0.00.00.00.00.00.00.00.00.00.10.0-0.0

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-0.2-1.0-0.2-0.2-1.2-0.3-1.0-0.9-0.9-1.1-0.30.5-2.6-1.11.1
Percentage of NetIncomeLossAttributableToNoncontrollingInterest-22.2-52.6-40.0-13.3-80.0-37.5-100.0-56.2-75.0-73.3-42.9125.0-83.9-84.6-68.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.00.0-0.1-0.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Income Loss Available To Common Stockholders Basic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value250112-1156.01781483102521601392792682231134
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.22.5-25.94.23.36.75.43.53.26.66.55.629.1

Net Income Loss Available To Common Stockholders Diluted

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value250112-1156.0178148-763.713271601392792682231134
Percentage of NetIncomeLossAvailableToCommonStockholdersDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.22.5-25.94.23.3-16.428.33.53.26.66.55.629.1

Operating Income Loss

us-gaap:OperatingIncomeLoss

us-gaap:OperatingIncomeLoss


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value382197233-1054.927127425249042130527751838528395
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.94.45.3-23.66.46.25.710.59.06.66.412.29.37.12.4

us-gaap:OperatingIncomeLoss us-gaap:ConsolidatedEntities

srt:ConsolidationEliminations


Operating
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value-7.6-7.8-8.2-8.0-9.1-9.9
Percentage of OperatingIncomeLoss0.7-2.9-3.0-3.2-1.9-2.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.2-0.2-0.2-0.2-0.2-0.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations0.01.21.21.30.01.6

srt:GuarantorSubsidiaries


Operating
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-639.1787653221157183111966698
Percentage of OperatingIncomeLoss60.628.927.721.04.627.323.630.121.425.023.4103.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-14.31.91.71.20.52.51.61.92.62.31.72.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:GuarantorSubsidiaries0.013.012.19.00.017.911.213.40.014.310.516.2

srt:NonGuarantorSubsidiaries


Operating
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-405.12012082094783172371933152912203.9
Percentage of OperatingIncomeLoss38.474.176.082.997.575.377.869.960.975.877.74.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-9.14.74.74.710.36.85.14.57.47.15.50.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries0.04.74.74.70.06.85.15.00.07.15.50.1

srt:SubsidiaryIssuer


Operating
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-3.1-0.4-2.1-1.8-1.2-1.0-4.2-0.1-3.5-3.0-2.9-7.3
Percentage of OperatingIncomeLoss0.3-0.1-0.8-0.7-0.2-0.2-1.4-0.0-0.7-0.8-1.0-7.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.1-0.0-0.0-0.0-0.0-0.0-0.1-0.0-0.1-0.1-0.1-0.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:SubsidiaryIssuer0.00.00.00.00.00.00.00.00.00.00.00.0

Other Comprehensive Income Loss Net Of Tax

us-gaap:OtherComprehensiveIncomeLossNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value153-79.02056731-384.4107-374.93028-59.5-21.4-232.656-40.1
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.2-1.84.71.50.8-8.62.4-8.10.60.6-1.4-0.5-5.61.4-1.0

Other Nonoperating Income Expense

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:OtherNonoperatingIncomeExpense


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value6.4-13.42019-5.0-0.9-3.74.73.7-3.3-2.7-0.69.71.12.5
Percentage of OtherNonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.1-0.30.50.4-0.1-0.0-0.10.10.1-0.1-0.1-0.00.20.00.1

us-gaap:OtherNonoperatingIncomeExpense us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries


Other
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-83.90.00.21.139-35.2-1.00.6-17.9-8.92.61.7
Percentage of OtherNonoperatingIncomeExpense-439.3-0.0-22.2-29.7829.8-951.430.3-22.22983.3-91.8236.468.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.90.00.00.00.8-0.8-0.00.0-0.4-0.20.10.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:GuarantorSubsidiaries0.00.00.00.20.0-5.5-0.20.10.0-1.30.40.3

srt:NonGuarantorSubsidiaries


Other
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value103-5.5-1.2-4.8-33.2381.1-2.71718-2.10.4
Percentage of OtherNonoperatingIncomeExpense540.8110.0133.3129.7-706.41051.4-33.3100.0-2883.3194.8-190.916.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.3-0.1-0.0-0.1-0.70.80.0-0.10.40.5-0.10.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries0.0-0.1-0.0-0.10.00.80.0-0.10.00.5-0.10.0

srt:ParentCompany


Other
Period End2020-09-302020-06-302020-03-31
Value0.00.00.1
Percentage of OtherNonoperatingIncomeExpense0.0-0.0-11.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.0

srt:SubsidiaryIssuer


Other
Period End2020-09-302020-06-302019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-0.30.5-1.10.0-3.4-0.60.0-0.30.60.4
Percentage of OtherNonoperatingIncomeExpense-1.6-10.0-23.40.0103.022.2-0.0-3.154.516.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.00.0-0.00.0-0.1-0.00.0-0.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:SubsidiaryIssuer0.00.00.00.00.00.00.00.00.00.0

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value251114152-1154.518014813931225316113928027122411331953269878
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.22.63.5-25.84.23.33.26.75.43.53.26.66.65.629.14.88.82.72.3

us-gaap:ProfitLoss us-gaap:ConsolidatedEntities

srt:ConsolidationEliminations


Profit
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value2467-647.0-511.4-503.4-1127.2-501.3-526.1-555.9-447.3-441.0-371.9-2015.7
Percentage of ProfitLoss-213.7-359.4-343.5-360.9-360.8-197.5-325.0-397.6-159.8-162.6-165.7-177.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax55.2-15.3-11.5-11.4-24.2-10.7-11.4-12.8-10.6-10.7-9.3-51.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations0.097.777.280.40.079.780.0281.80.065.457.11053.7

srt:GuarantorSubsidiaries


Profit
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-976.7221123132339-15.41692321811851391030
Percentage of ProfitLoss84.6122.883.194.9108.7-6.1104.7166.264.968.261.990.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-21.85.22.83.07.3-0.33.75.44.34.53.526.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:GuarantorSubsidiaries0.036.619.622.50.0-2.426.537.30.027.521.9169.6

srt:NonGuarantorSubsidiaries


Profit
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-355.0201188197358302219167265259234983
Percentage of ProfitLoss30.7112.1126.6141.9114.7119.2135.4120.095.095.5104.386.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-7.94.84.24.57.76.54.73.96.36.35.825.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries0.04.74.24.40.06.54.74.30.06.35.828.3

srt:ParentCompany


Profit
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-1156.0178148138310252160139-8.9-0.6-0.1
Percentage of ProfitLoss100.199.299.599.399.599.599.199.5-3.2-0.2-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-25.94.23.33.16.75.43.53.2-0.2-0.0-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.00.0

srt:SubsidiaryIssuer


Profit
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-1134.22252001744302151381562882682231135
Percentage of ProfitLoss98.2125.4134.3124.8137.984.885.8111.9103.099.199.5100.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-25.45.34.53.99.34.63.03.66.86.55.629.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:SubsidiaryIssuer0.00.00.00.00.00.00.00.00.00.00.00.0

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value4816443744014471423644474423465146904620432742364137401738944060369536563447
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidatedEntities

srt:ConsolidationEliminations


Revenue
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-641.8-662.2-662.7-626.1-702.4-629.3-657.3-197.3-688.7-673.8-651.0-191.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-14.4-15.6-14.9-14.2-15.1-13.4-14.2-4.6-16.3-16.3-16.2-4.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-14.4-15.6-14.9-14.2-15.1-13.4-14.2-4.6-16.3-16.3-16.2-4.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:GuarantorSubsidiaries


Revenue
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value605604630589637643639623676673633608
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax13.514.314.213.313.713.713.814.416.016.315.815.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax13.514.314.213.313.713.713.814.416.016.315.815.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:GuarantorSubsidiaries100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:NonGuarantorSubsidiaries


Revenue
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value450742934479446047164676463839014249413840343477
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.8101.4100.7100.8101.499.7100.490.2100.3100.0100.489.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.8101.4100.7100.8101.499.7100.490.2100.3100.0100.489.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems

us-gaap:IntersegmentElimination


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-85.5-65.5-58.1-54.1-45.1-51.5-41.6-36.7-41.5-39.8-39.1-49.6-41.5-38.3-38.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.8-1.5-1.3-1.2-1.1-1.2-0.9-0.8-0.9-0.9-0.9-1.2-1.0-1.0-1.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.8-1.5-1.3-1.2-1.1-1.2-0.9-0.8-0.9-0.9-0.9-1.2-1.0-1.0-1.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:IntersegmentElimination100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value490145034459452542814498446546884731465943664286417940553932
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax101.8101.5101.3101.2101.1101.2100.9100.8100.9100.9100.9101.2101.0101.0101.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax101.8101.5101.3101.2101.1101.2100.9100.8100.9100.9100.9101.2101.0101.0101.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:OperatingSegments, wrk:UnaffiliatedCustomers, wrk:ConsumerPackaging


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value167115431559158915221585151316501628164715971684164916211582
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax34.734.835.435.635.935.734.235.534.735.736.939.739.940.440.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax34.734.835.435.635.935.734.235.534.735.736.939.739.940.440.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments wrk:UnaffiliatedCustomers wrk:ConsumerPackaging100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, wrk:UnaffiliatedCustomers, wrk:CorrugatedPackaging


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value314428942842288127132861289130013053297127152513242323692300
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax65.365.264.664.464.164.365.464.565.164.362.859.358.659.059.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax65.365.264.664.464.164.365.464.565.164.362.859.358.659.059.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments wrk:UnaffiliatedCustomers wrk:CorrugatedPackaging100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, wrk:UnaffiliatedCustomers, wrk:LandAndDevelopment


Revenue
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0.00.00.0180.18.60.81339642611
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.40.00.20.00.30.91.60.70.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.40.00.20.00.30.91.60.70.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments wrk:UnaffiliatedCustomers wrk:LandAndDevelopment0.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:IntersegmentElimination, wrk:ConsumerPackaging


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-62.9-46.9-36.1-37.4-29.8-30.8-23.3-18.5-21.8-20.4-21.1-25.3-19.9-16.3-19.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.3-1.1-0.8-0.8-0.7-0.7-0.5-0.4-0.5-0.4-0.5-0.6-0.5-0.4-0.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.3-1.1-0.8-0.8-0.7-0.7-0.5-0.4-0.5-0.4-0.5-0.6-0.5-0.4-0.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:IntersegmentElimination wrk:ConsumerPackaging100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IntersegmentElimination, wrk:CorrugatedPackaging


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-22.6-18.6-22.0-16.7-15.3-20.7-18.3-18.2-19.7-19.4-18.0-24.3-21.6-22.0-19.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.5-0.4-0.5-0.4-0.4-0.5-0.4-0.4-0.4-0.4-0.4-0.6-0.5-0.5-0.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.5-0.4-0.5-0.4-0.4-0.5-0.4-0.4-0.4-0.4-0.4-0.6-0.5-0.5-0.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:IntersegmentElimination wrk:CorrugatedPackaging100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, wrk:ConsumerPackaging


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value173415891595162715521616153616681650166816181709166916371601
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax36.035.836.236.436.636.334.735.935.236.137.440.340.440.841.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax36.035.836.236.436.636.334.735.935.236.137.440.340.440.841.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments wrk:ConsumerPackaging100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, wrk:CorrugatedPackaging


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value316729132864289827282882290930193072299027332537244423912319
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax65.865.665.164.864.464.865.864.965.564.763.259.959.159.559.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax65.865.665.164.864.464.865.864.965.564.763.259.959.159.559.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments wrk:CorrugatedPackaging100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, wrk:LandAndDevelopment


Revenue
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0.00.00.0180.18.60.81339642611
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.40.00.20.00.30.91.60.70.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.40.00.20.00.30.91.60.70.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments wrk:LandAndDevelopment0.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems, us-gaap:StatementGeographical

us-gaap:IntersegmentElimination, srt:AsiaPacific


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value-0.3-0.2-0.1-0.3-0.1-0.1-0.1-0.2-0.1-0.2-1.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:IntersegmentElimination srt:AsiaPacific100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IntersegmentElimination, srt:Europe


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-09-302019-06-30
Value-0.10.0-0.1-0.1-0.20.0-0.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.00.0-0.0-0.0-0.00.0-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.00.0-0.0-0.0-0.00.0-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:IntersegmentElimination srt:Europe100.00.0100.0100.0100.00.0100.0

us-gaap:IntersegmentElimination, srt:NorthAmerica


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value-85.1-65.3-57.9-53.7-44.8-51.4-41.5-36.5-41.3-39.8-38.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.8-1.5-1.3-1.2-1.1-1.2-0.9-0.8-0.9-0.9-0.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.8-1.5-1.3-1.2-1.1-1.2-0.9-0.8-0.9-0.9-0.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:IntersegmentElimination srt:NorthAmerica100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementBusinessSegments

wrk:ConsumerPackaging


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value17341589159516271552161615361668165016681618
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax36.035.836.236.436.636.334.735.935.236.137.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax36.035.836.236.436.636.334.735.935.236.137.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax wrk:ConsumerPackaging100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wrk:CorrugatedPackaging


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value31672913286428982728288229093019307229902733
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax65.865.665.164.864.464.865.864.965.564.763.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax65.865.665.164.864.464.865.864.965.564.763.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax wrk:CorrugatedPackaging100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wrk:LandAndDevelopment


Revenue
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value0.00.00.0180.18.60.813
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.40.00.20.00.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.40.00.20.00.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax wrk:LandAndDevelopment0.00.00.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical

srt:AsiaPacific


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value94878185747684908488100
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.02.01.91.91.81.71.91.91.81.92.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.02.01.91.91.81.71.91.91.81.92.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:AsiaPacific100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:Europe


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value287267250277234255246276259269269
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.06.05.76.25.55.85.65.95.55.86.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.06.05.76.25.55.85.65.95.55.86.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:Europe100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:NorthAmerica


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value42893963396639943826399539654147422741343829
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax89.189.390.189.390.389.989.689.290.189.588.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax89.189.390.189.390.389.989.689.290.189.588.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NorthAmerica100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:SouthAmerica


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value144119103114101119127137117127128
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.02.72.32.62.42.72.92.92.52.83.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.02.72.32.62.42.72.92.92.52.83.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:SouthAmerica100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical, us-gaap:StatementBusinessSegments

srt:AsiaPacific, wrk:ConsumerPackaging


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value7769697666627376707283
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.61.61.61.71.61.41.71.61.51.61.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.61.61.61.71.61.41.71.61.51.61.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:AsiaPacific wrk:ConsumerPackaging100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:AsiaPacific, wrk:CorrugatedPackaging


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1718129.68.0131114141518
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.40.40.30.20.20.30.30.30.30.30.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.40.40.30.20.20.30.30.30.30.30.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:AsiaPacific wrk:CorrugatedPackaging100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:Europe, wrk:ConsumerPackaging


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value285265249274233253244275259269269
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.96.05.76.15.55.75.55.95.55.86.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.96.05.76.15.55.75.55.95.55.86.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:Europe wrk:ConsumerPackaging100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:Europe, wrk:CorrugatedPackaging


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value1.51.10.93.00.62.51.80.90.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.10.00.10.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.10.00.10.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:Europe wrk:CorrugatedPackaging100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:NorthAmerica, wrk:ConsumerPackaging


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value13531231125412591238128111981295130613081247
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax28.127.828.528.229.228.827.127.927.828.328.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax28.127.828.528.229.228.827.127.927.828.328.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NorthAmerica wrk:ConsumerPackaging100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:NorthAmerica, wrk:CorrugatedPackaging


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value30202797277027882632276527882888295428652606
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax62.763.062.962.462.162.263.062.163.062.060.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax62.763.062.962.462.162.263.062.163.062.060.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NorthAmerica wrk:CorrugatedPackaging100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:NorthAmerica, wrk:LandAndDevelopment


Revenue
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value0.00.00.0180.18.60.813
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.40.00.20.00.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.40.00.20.00.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NorthAmerica wrk:LandAndDevelopment0.00.00.0100.0100.0100.0100.0100.0

srt:SouthAmerica, wrk:ConsumerPackaging


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1723221714182021141719
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.40.50.50.40.30.40.50.50.30.40.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.40.50.50.40.30.40.50.50.30.40.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:SouthAmerica wrk:ConsumerPackaging100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:SouthAmerica, wrk:CorrugatedPackaging


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value12796819787100107116102109108
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.62.21.82.22.12.32.42.52.22.42.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.62.21.82.22.12.32.42.52.22.42.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:SouthAmerica wrk:CorrugatedPackaging100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Revenues

us-gaap:Revenues

us-gaap:Revenues


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value4816443744014471423644474423465146904620432742364137401738944060369536563447
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Assets

us-gaap:Assets

us-gaap:Assets


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-09-302016-09-30
Value2941428971288362877930277309603093630156308123069330666253602508923038
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Assets us-gaap:ConsolidatedEntities

srt:ConsolidationEliminations


Assetsus-gaap:
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-53629.6-55535.6-56485.1-56259.3-55507.1-55106.2-53645.1-52816.2-32916.5
Percentage of Assets-186.3-183.4-182.4-181.9-184.1-178.8-174.8-172.2-129.8
Percentage of Assets-186.3-183.4-182.4-181.9-184.1-178.8-174.8-172.2-129.8
Percentage of Assets srt:ConsolidationEliminations100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:GuarantorSubsidiaries


Assetsus-gaap:
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value221952325723953236582335923389233512357119031
Percentage of Assets77.176.877.476.577.575.976.176.975.0
Percentage of Assets77.176.877.476.577.575.976.176.975.0
Percentage of Assets srt:GuarantorSubsidiaries100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:NonGuarantorSubsidiaries


Assetsus-gaap:
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value310783123432202320293140731300307893035625153
Percentage of Assets108.0103.2104.0103.5104.1101.6100.399.099.2
Percentage of Assets108.0103.2104.0103.5104.1101.6100.399.099.2
Percentage of Assets srt:NonGuarantorSubsidiaries100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:ParentCompany


Assetsus-gaap:
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value11070121591198312219119731203611797116073.4
Percentage of Assets38.540.238.739.539.739.138.437.90.0
Percentage of Assets38.540.238.739.539.739.138.437.90.0
Percentage of Assets srt:ParentCompany100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:SubsidiaryIssuer


Assetsus-gaap:
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value180641916119305192881892219191183991794814087
Percentage of Assets62.863.362.462.362.762.359.958.555.6
Percentage of Assets62.863.362.462.362.762.359.958.555.6
Percentage of Assets srt:SubsidiaryIssuer100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Assets us-gaap:StatementBusinessSegments

us-gaap:Corporate


Assetsus-gaap:
Period End2020-09-302019-09-302019-06-302019-03-312018-12-312018-09-302017-09-302016-09-30
Value26802382264726292704267124102356
Percentage of Assets9.37.98.68.68.810.59.610.2
Percentage of Assets9.37.98.68.68.810.59.610.2
Percentage of Assets us-gaap:Corporate100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DisposalGroupHeldforsaleNotDiscontinuedOperations


Assetsus-gaap:
Period End2020-09-302019-09-302019-06-302019-03-312018-12-312018-09-302017-09-302016-09-30
Value7.0252633395917352
Percentage of Assets0.00.10.10.10.10.20.70.2
Percentage of Assets0.00.10.10.10.10.20.70.2
Percentage of Assets us-gaap:DisposalGroupHeldforsaleNotDiscontinuedOperations100.0100.0100.0100.0100.0100.0100.0100.0

wrk:ConsumerPackaging


Assetsus-gaap:
Period End2020-09-302019-09-302019-06-302019-03-312018-12-312018-09-302017-09-302016-09-30
Value958411038112161122011437119021187710122
Percentage of Assets33.336.636.436.637.346.947.343.9
Percentage of Assets33.336.636.436.637.346.947.343.9
Percentage of Assets wrk:ConsumerPackaging100.0100.0100.0100.0100.0100.0100.0100.0

wrk:CorrugatedPackaging


Assetsus-gaap:
Period End2020-09-302019-09-302019-06-302019-03-312018-12-312018-09-302017-09-302016-09-30
Value1650716681168931677516438106781053710046
Percentage of Assets57.455.354.854.753.642.142.043.6
Percentage of Assets57.455.354.854.753.642.142.043.6
Percentage of Assets wrk:CorrugatedPackaging100.0100.0100.0100.0100.0100.0100.0100.0

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-09-30
Value29414289712883628779302773096030936301563081230693306662536025089
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilitiesAndStockholdersEquity us-gaap:ConsolidatedEntities

srt:ConsolidationEliminations


Liabilities
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-53629.6-55535.6-56485.1-56259.3-55507.1-55106.2-53645.1-52816.2-32916.5
Percentage of LiabilitiesAndStockholdersEquity-186.3-183.4-182.4-181.9-184.1-178.8-174.8-172.2-129.8
Percentage of Assets-186.3-183.4-182.4-181.9-184.1-178.8-174.8-172.2-129.8
Percentage of Assets srt:ConsolidationEliminations100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:GuarantorSubsidiaries


Liabilities
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value221952325723953236582335923389233512357119031
Percentage of LiabilitiesAndStockholdersEquity77.176.877.476.577.575.976.176.975.0
Percentage of Assets77.176.877.476.577.575.976.176.975.0
Percentage of Assets srt:GuarantorSubsidiaries100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:NonGuarantorSubsidiaries


Liabilities
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value310783123432202320293140731300307893035625153
Percentage of LiabilitiesAndStockholdersEquity108.0103.2104.0103.5104.1101.6100.399.099.2
Percentage of Assets108.0103.2104.0103.5104.1101.6100.399.099.2
Percentage of Assets srt:NonGuarantorSubsidiaries100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:ParentCompany


Liabilities
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value11070121591198312219119731203611797116073.4
Percentage of LiabilitiesAndStockholdersEquity38.540.238.739.539.739.138.437.90.0
Percentage of Assets38.540.238.739.539.739.138.437.90.0
Percentage of Assets srt:ParentCompany100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:SubsidiaryIssuer


Liabilities
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value180641916119305192881892219191183991794814087
Percentage of LiabilitiesAndStockholdersEquity62.863.362.462.362.762.359.958.555.6
Percentage of Assets62.863.362.462.362.762.359.958.555.6
Percentage of Assets srt:SubsidiaryIssuer100.0100.0100.0100.0100.0100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-09-30
Value114511105110963106301171311482118251166911827116401160311469113931154711353103429728
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets38.938.138.036.938.737.138.238.738.437.937.845.20.00.00.041.242.2

us-gaap:StockholdersEquity us-gaap:ConsolidatedEntities

srt:ConsolidationEliminations


Stockholders
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-48585.0-50877.4-50848.2-51407.6-50474.0-50458.1-49811.6-48910.4-28003.0
Percentage of StockholdersEquity-457.0-434.4-442.8-434.7-432.5-426.6-427.9-421.5-244.2
Percentage of Assets-168.8-168.0-164.2-166.2-167.4-163.8-162.3-159.5-110.4
Percentage of Assets srt:ConsolidationEliminations90.691.690.091.490.991.692.992.685.1

srt:GuarantorSubsidiaries


Stockholders
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value170651797117162174111711117139169931645711731
Percentage of StockholdersEquity160.5153.4149.5147.2146.6144.9146.0141.8102.3
Percentage of Assets59.359.455.456.356.755.655.453.746.3
Percentage of Assets srt:GuarantorSubsidiaries76.977.371.673.673.373.372.869.861.6

srt:NonGuarantorSubsidiaries


Stockholders
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value211012142922025221512186221874215762139116271
Percentage of StockholdersEquity198.5183.0191.8187.3187.3184.9185.3184.4141.9
Percentage of Assets73.370.871.171.672.571.070.369.864.2
Percentage of Assets srt:NonGuarantorSubsidiaries67.968.668.469.269.669.970.170.564.7

srt:ParentCompany


Stockholders
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value1063011713114821182511669118271164011603-9.9
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0-0.1
Percentage of Assets36.938.737.138.238.738.437.937.8-0.0
Percentage of Assets srt:ParentCompany96.096.395.896.897.598.398.7100.0-291.2

srt:SubsidiaryIssuer


Stockholders
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value104171147611661118441150011443112421106111479
Percentage of StockholdersEquity98.098.0101.6100.298.596.896.695.3100.1
Percentage of Assets36.237.937.738.338.137.136.636.145.3
Percentage of Assets srt:SubsidiaryIssuer57.759.960.461.460.859.661.161.681.5

Assets Current

us-gaap:AssetsCurrent

us-gaap:AssetsCurrent


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-09-30
Value5723538448634944500554924952497451935214522647854490
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets19.518.616.917.216.517.716.016.516.917.017.018.917.9

us-gaap:AssetsCurrent us-gaap:ConsolidatedEntities

srt:ConsolidationEliminations


Assets
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-1854.0-1445.5-2192.7-1460.2-1618.3-1280.0-695.9-768.4-1123.7
Percentage of AssetsCurrent-37.5-28.9-39.9-29.5-32.5-24.6-13.3-14.7-23.5
Percentage of Assets-6.4-4.8-7.1-4.7-5.4-4.2-2.3-2.5-4.4
Percentage of Assets srt:ConsolidationEliminations3.52.63.92.62.92.31.31.53.4

srt:GuarantorSubsidiaries


Assets
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value33546377130031528648810751223
Percentage of AssetsCurrent6.89.314.06.16.35.59.420.625.6
Percentage of Assets1.21.52.51.01.00.91.63.54.8
Percentage of Assets srt:GuarantorSubsidiaries1.52.03.21.31.31.22.14.66.4

srt:NonGuarantorSubsidiaries


Assets
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value645959636534588960385531526648784656
Percentage of AssetsCurrent130.6119.1119.0118.9121.4106.5101.093.497.3
Percentage of Assets22.419.721.119.020.018.017.215.918.4
Percentage of Assets srt:NonGuarantorSubsidiaries20.819.120.318.419.217.717.116.118.5

srt:ParentCompany


Assets
Period End2020-09-302020-06-302020-03-312019-06-302019-03-312018-12-31
Value0.50.50.40.10.50.2
Percentage of AssetsCurrent0.00.00.00.00.00.0
Percentage of Assets0.00.00.00.00.00.0
Percentage of Assets srt:ParentCompany0.00.00.00.00.00.0

srt:SubsidiaryIssuer


Assets
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value3.0243782232396551543928
Percentage of AssetsCurrent0.10.56.94.54.812.63.00.80.6
Percentage of Assets0.00.11.20.70.82.10.50.10.1
Percentage of Assets srt:SubsidiaryIssuer0.00.12.01.21.33.40.80.20.2

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashAndCashEquivalentsAtCarryingValue


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-09-30
Value549334253251291640156151179154260636298
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.91.20.90.91.02.10.50.50.60.50.92.51.2

us-gaap:CashAndCashEquivalentsAtCarryingValue us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries


Cash
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value1051784698.717121950490
Percentage of CashAndCashEquivalentsAtCarryingValue42.161.273.45.611.77.012.719.377.1
Percentage of Assets0.40.61.50.00.10.00.10.21.9
Percentage of Assets srt:GuarantorSubsidiaries0.50.82.00.00.10.10.10.22.6

srt:NonGuarantorSubsidiaries


Cash
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value145113170147133166134210145
Percentage of CashAndCashEquivalentsAtCarryingValue57.938.826.694.488.393.087.380.722.9
Percentage of Assets0.50.40.60.50.40.50.40.70.6
Percentage of Assets srt:NonGuarantorSubsidiaries0.50.40.50.50.40.50.40.70.6

Accounts Receivable Net Current

us-gaap:AccountsReceivableNetCurrent

us-gaap:AccountsReceivableNetCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-09-30
Value2518241620232142208322222061219323982367231520101886
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets8.68.37.07.46.97.26.77.37.87.77.67.97.5

us-gaap:AccountsReceivableNetCurrent us-gaap:ConsolidatedEntities

srt:ConsolidationEliminations


Accounts
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-50.9-48.4-33.7-30.7-39.6-32.5-33.3-26.1-26.1
Percentage of AccountsReceivableNetCurrent-2.4-2.3-1.5-1.5-1.8-1.4-1.4-1.1-1.3
Percentage of Assets-0.2-0.2-0.1-0.1-0.1-0.1-0.1-0.1-0.1
Percentage of Assets srt:ConsolidationEliminations0.10.10.10.10.10.10.10.00.1

srt:GuarantorSubsidiaries


Accounts
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value413826163125182176196
Percentage of AccountsReceivableNetCurrent1.91.91.20.81.41.17.77.69.8
Percentage of Assets0.10.10.10.10.10.10.60.60.8
Percentage of Assets srt:GuarantorSubsidiaries0.20.20.10.10.10.10.80.71.0

srt:NonGuarantorSubsidiaries


Accounts
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value215220922229207622012404221721651840
Percentage of AccountsReceivableNetCurrent100.4100.5100.3100.7100.4100.393.793.591.5
Percentage of Assets7.56.97.26.77.37.87.27.17.3
Percentage of Assets srt:NonGuarantorSubsidiaries6.96.76.96.57.07.77.27.17.3

Inventory Net

us-gaap:InventoryNet

us-gaap:InventoryNet


Inventory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-09-30
Value2145209020842023213721252189210720742096210118291797
Percentage of InventoryNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets7.37.27.27.07.16.97.17.06.76.86.97.27.2

us-gaap:InventoryNet us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries


Inventory
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value175239266266254241254240233
Percentage of InventoryNet8.711.212.512.112.111.612.211.412.8
Percentage of Assets0.60.80.90.90.80.80.80.80.9
Percentage of Assets srt:GuarantorSubsidiaries0.81.01.11.11.11.01.11.01.2

srt:NonGuarantorSubsidiaries


Inventory
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value184818971859192318531832184218611596
Percentage of InventoryNet91.388.887.587.987.988.487.888.687.2
Percentage of Assets6.46.36.06.26.15.96.06.16.3
Percentage of Assets srt:NonGuarantorSubsidiaries5.96.15.86.05.95.96.06.16.3

Inventory Finished Goods And Work In Process

us-gaap:InventoryFinishedGoodsAndWorkInProcess

us-gaap:InventoryFinishedGoodsAndWorkInProcess


Inventory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-09-30
Value9449178648449379821000938930956921867905
Percentage of InventoryFinishedGoodsAndWorkInProcess100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.23.23.02.93.13.23.23.13.03.13.03.43.6

Inventory L I F O Reserve

us-gaap:InventoryLIFOReserve

us-gaap:InventoryLIFOReserve


Inventory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-09-30
Value1701291009310111812012915016414513582
Percentage of InventoryLIFOReserve100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.60.40.30.30.30.40.40.40.50.50.50.50.3

Other Assets Current

us-gaap:OtherAssetsCurrent

us-gaap:OtherAssetsCurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-09-30
Value500529492520490501537496515562508248329
Percentage of OtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.71.81.71.81.61.61.71.61.71.81.71.01.3

us-gaap:OtherAssetsCurrent us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries


Other
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value116.37.28.6116.78.21117
Percentage of OtherAssetsCurrent2.21.31.41.62.41.31.52.26.9
Percentage of Assets0.00.00.00.00.00.00.00.00.1
Percentage of Assets srt:GuarantorSubsidiaries0.10.00.00.00.10.00.00.00.1

srt:NonGuarantorSubsidiaries


Other
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value508483493528483508553497230
Percentage of OtherAssetsCurrent97.798.698.598.497.498.598.397.892.9
Percentage of Assets1.81.61.61.71.61.61.81.60.9
Percentage of Assets srt:NonGuarantorSubsidiaries1.61.51.51.71.51.61.81.60.9

srt:ParentCompany


Other
Period End2020-09-302020-06-302020-03-312019-06-302019-03-312018-12-31
Value0.50.50.40.10.50.2
Percentage of OtherAssetsCurrent0.10.10.10.00.10.0
Percentage of Assets0.00.00.00.00.00.0
Percentage of Assets srt:ParentCompany0.00.00.00.00.00.0

Noncurrent Assets

us-gaap:NoncurrentAssets us-gaap:StatementGeographical

us-gaap:NoncurrentAssets

wrk:ForeignOperations


Noncurrent
Period End2020-09-302019-09-302018-09-302017-09-302016-09-30
Value13901466140015581341
Percentage of NoncurrentAssets100.0100.0100.0100.0100.0
Percentage of Assets4.84.95.56.25.8
Percentage of Assets wrk:ForeignOperations0.00.00.00.00.0

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross

us-gaap:PropertyPlantAndEquipmentGross


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-09-30
Value18581182261821617915177971766417811174611721116848165311441913682
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets63.262.963.262.358.857.157.657.955.954.953.956.954.5

us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType

us-gaap:LandAndBuilding


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-09-30
Value2600254625652524250724912476244224392360234920782034
Percentage of PropertyPlantAndEquipmentGross14.014.014.114.114.114.113.914.014.214.014.214.414.9
Percentage of Assets8.88.88.98.88.38.08.08.17.97.77.78.28.1
Percentage of Assets us-gaap:LandAndBuilding0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:LeaseholdImprovements


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-09-30
Value10610510510310210210110099100998859
Percentage of PropertyPlantAndEquipmentGross0.60.60.60.60.60.60.60.60.60.60.60.60.4
Percentage of Assets0.40.40.40.40.30.30.30.30.30.30.30.40.2
Percentage of Assets us-gaap:LeaseholdImprovements0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:MachineryAndEquipment


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-09-30
Value15718154321539415147150441492115057147431448714206138891206411349
Percentage of PropertyPlantAndEquipmentGross84.684.784.584.584.584.584.584.484.284.384.083.783.0
Percentage of Assets53.453.353.452.649.748.248.748.947.046.345.347.645.2
Percentage of Assets us-gaap:MachineryAndEquipment0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TransportationEquipment


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-09-30
Value28282929282830313131303030
Percentage of PropertyPlantAndEquipmentGross0.20.20.20.20.20.20.20.20.20.20.20.20.2
Percentage of Assets0.10.10.10.10.10.10.10.10.10.10.10.10.1
Percentage of Assets us-gaap:TransportationEquipment0.00.00.00.00.00.00.00.00.00.00.00.00.0

wrk:ForestLandsAndMineralRights


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-09-30
Value127112121110114120146144152149162158208
Percentage of PropertyPlantAndEquipmentGross0.70.60.70.60.60.70.80.80.90.91.01.11.5
Percentage of Assets0.40.40.40.40.40.40.50.50.50.50.50.60.8
Percentage of Assets wrk:ForestLandsAndMineralRights0.00.00.00.00.00.00.00.00.00.00.00.00.0

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-09-30
Value7949765374327136687466286530627160415818556253374564
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets27.026.425.824.822.721.421.120.819.619.018.121.018.2

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:PropertyPlantAndEquipmentNet


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-09-30
Value106311057210784107781092211036112811118911169110291096990829118
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets36.136.537.437.536.135.636.537.136.235.935.835.836.3

us-gaap:PropertyPlantAndEquipmentNet us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries


Property
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value151415151819222121
Percentage of PropertyPlantAndEquipmentNet0.10.10.10.10.20.20.20.20.2
Percentage of Assets0.10.00.00.00.10.10.10.10.1
Percentage of Assets srt:GuarantorSubsidiaries0.10.10.10.10.10.10.10.10.1

srt:NonGuarantorSubsidiaries


Property
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value10763109071102111265111701115011007109479061
Percentage of PropertyPlantAndEquipmentNet99.999.999.999.999.899.899.899.899.8
Percentage of Assets37.436.035.636.437.036.235.935.735.7
Percentage of Assets srt:NonGuarantorSubsidiaries34.634.934.235.235.635.635.736.136.0

Goodwill

us-gaap:Goodwill

us-gaap:Goodwill


Goodwill
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-09-302016-09-30
Value59825959599759627270726473277285732173007320557755284778
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets20.320.620.820.724.023.523.724.223.823.823.922.022.020.7

us-gaap:Goodwill us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries


Goodwillus-gaap:
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value41111581158115811581151115111511151
Percentage of Goodwill6.915.915.915.815.915.715.815.720.6
Percentage of Assets1.43.83.73.73.83.73.83.84.5
Percentage of Assets srt:GuarantorSubsidiaries1.95.04.84.95.04.94.94.96.0

srt:NonGuarantorSubsidiaries


Goodwillus-gaap:
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value555061116105616861276170614961694426
Percentage of Goodwill93.184.184.184.284.184.384.284.379.4
Percentage of Assets19.320.219.719.920.320.020.020.117.5
Percentage of Assets srt:NonGuarantorSubsidiaries17.919.619.019.319.519.720.020.317.6

us-gaap:Goodwill us-gaap:ReportingUnit

wrk:BrazilCorrugated


Goodwillus-gaap:
Period End2020-09-30
Value99
Percentage of Goodwill1.7
Percentage of Assets0.3
Percentage of Assets wrk:BrazilCorrugated0.0

wrk:NorthAmericanCorrugated


Goodwillus-gaap:
Period End2020-09-30
Value3533
Percentage of Goodwill59.3
Percentage of Assets12.3
Percentage of Assets wrk:NorthAmericanCorrugated0.0

wrk:VictoryPackaging


Goodwillus-gaap:
Period End2020-09-302019-09-30
Value4140
Percentage of Goodwill0.70.6
Percentage of Assets0.10.1
Percentage of Assets wrk:VictoryPackaging0.00.0

us-gaap:Goodwill us-gaap:StatementBusinessSegments

wrk:ConsumerPackaging


Goodwillus-gaap:
Period End2020-09-302019-09-302019-06-302019-03-312018-12-312018-09-302017-09-302016-09-302015-09-30
Value228835903616359535943686366230552979
Percentage of Goodwill38.449.349.449.249.166.166.364.00.0
Percentage of Assets8.011.911.711.711.714.514.613.30.0
Percentage of Assets wrk:ConsumerPackaging23.932.532.232.031.431.030.830.20.0

wrk:CorrugatedPackaging


Goodwillus-gaap:
Period End2020-09-302019-09-302019-06-302019-03-312018-12-312018-09-302017-09-302016-09-302015-09-30
Value367336953705370537251890186517221667
Percentage of Goodwill61.650.750.650.850.933.933.736.00.0
Percentage of Assets12.812.312.012.112.17.57.47.50.0
Percentage of Assets wrk:CorrugatedPackaging22.322.221.922.122.717.717.717.10.0

Intangible Assets Net Excluding Goodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill


Intangible
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-09-30
Value3418349935983667374938453968405941744277435231223329
Percentage of IntangibleAssetsNetExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets11.612.112.512.712.412.412.813.513.513.914.212.313.3

us-gaap:IntangibleAssetsNetExcludingGoodwill us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries


Intangible
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value138514091434145814851511153715631589
Percentage of IntangibleAssetsNetExcludingGoodwill37.837.637.336.836.636.235.935.950.9
Percentage of Assets4.84.74.64.74.94.95.05.16.3
Percentage of Assets srt:GuarantorSubsidiaries6.26.16.06.26.46.56.66.68.4

srt:NonGuarantorSubsidiaries


Intangible
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value228123392411250925742663274027881532
Percentage of IntangibleAssetsNetExcludingGoodwill62.262.462.763.263.463.864.164.149.1
Percentage of Assets7.97.77.88.18.58.68.99.16.0
Percentage of Assets srt:NonGuarantorSubsidiaries7.37.57.57.88.28.58.99.26.1

us-gaap:IntangibleAssetsNetExcludingGoodwill us-gaap:StatementBusinessSegments

wrk:ConsumerPackaging


Intangible
Period End2020-09-302019-09-302019-06-302018-09-302017-09-30
Value22442404246326152788
Percentage of IntangibleAssetsNetExcludingGoodwill61.259.259.083.883.8
Percentage of Assets7.88.08.010.311.1
Percentage of Assets wrk:ConsumerPackaging23.421.822.022.023.5

wrk:CorrugatedPackaging


Intangible
Period End2020-09-302019-09-302019-06-302018-09-302017-09-30
Value142316551711506540
Percentage of IntangibleAssetsNetExcludingGoodwill38.840.841.016.216.2
Percentage of Assets4.95.55.62.02.2
Percentage of Assets wrk:CorrugatedPackaging8.69.910.14.75.1

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value695696709658649683696
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.42.42.52.32.12.22.3

Other Assets Noncurrent

us-gaap:OtherAssetsNoncurrent

us-gaap:OtherAssetsNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-09-30
Value192518551922179017541772187811481213114510911092966
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.56.46.76.25.85.76.13.83.93.73.64.33.9

us-gaap:OtherAssetsNoncurrent us-gaap:ConsolidatedEntities

srt:ConsolidationEliminations


Other
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-59.4-86.7-91.8-64.0-76.1-10.8-9.6-8.8-7.1
Percentage of OtherAssetsNoncurrent-3.3-4.9-5.2-3.4-6.6-0.9-0.8-0.8-0.7
Percentage of Assets-0.2-0.3-0.3-0.2-0.3-0.0-0.0-0.0-0.0
Percentage of Assets srt:ConsolidationEliminations0.10.20.20.10.10.00.00.00.0

srt:GuarantorSubsidiaries


Other
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value220233241232185190181163172
Percentage of OtherAssetsNoncurrent12.313.313.612.416.115.715.815.015.8
Percentage of Assets0.80.80.80.80.60.60.60.50.7
Percentage of Assets srt:GuarantorSubsidiaries1.01.01.01.00.80.80.80.70.9

srt:NonGuarantorSubsidiaries


Other
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value15651515155316409711018959922910
Percentage of OtherAssetsNoncurrent87.486.487.787.384.684.083.884.683.4
Percentage of Assets5.45.05.05.33.23.33.13.03.6
Percentage of Assets srt:NonGuarantorSubsidiaries5.04.94.85.13.13.33.13.03.6

srt:SubsidiaryIssuer


Other
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value639169696715141312
Percentage of OtherAssetsNoncurrent3.65.23.93.75.91.21.21.31.1
Percentage of Assets0.20.30.20.20.20.00.00.00.0
Percentage of Assets srt:SubsidiaryIssuer0.40.50.40.40.40.10.10.10.1

Accounts Payable Current

us-gaap:AccountsPayableCurrent

us-gaap:AccountsPayableCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-09-30
Value1906179616721674151316961781183117061702167917161492
Percentage of AccountsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.56.25.85.85.05.55.86.15.55.55.56.85.9

us-gaap:AccountsPayableCurrent us-gaap:ConsolidatedEntities

srt:ConsolidationEliminations


Accounts
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-50.9-48.4-33.7-30.7-39.6-32.5-33.3-26.1-26.1
Percentage of AccountsPayableCurrent-3.0-3.2-2.0-1.7-2.2-1.9-2.0-1.6-1.5
Percentage of Assets-0.2-0.2-0.1-0.1-0.1-0.1-0.1-0.1-0.1
Percentage of Assets srt:ConsolidationEliminations0.10.10.10.10.10.10.10.00.1

srt:GuarantorSubsidiaries


Accounts
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value272433283132343640
Percentage of AccountsPayableCurrent1.71.62.01.61.71.92.02.22.3
Percentage of Assets0.10.10.10.10.10.10.10.10.2
Percentage of Assets srt:GuarantorSubsidiaries0.10.10.10.10.10.10.10.20.2

srt:NonGuarantorSubsidiaries


Accounts
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value169515361695178118391705169916631701
Percentage of AccountsPayableCurrent101.3101.599.9100.1100.499.999.999.199.1
Percentage of Assets5.95.15.55.86.15.55.55.46.7
Percentage of Assets srt:NonGuarantorSubsidiaries5.54.95.35.65.95.45.55.56.8

srt:SubsidiaryIssuer


Accounts
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value1.91.11.41.50.71.01.15.60.8
Percentage of AccountsPayableCurrent0.10.10.10.10.00.10.10.30.0
Percentage of Assets0.00.00.00.00.00.00.00.00.0
Percentage of Assets srt:SubsidiaryIssuer0.00.00.00.00.00.00.00.00.0

Contract With Customer Liability Current

us-gaap:ContractWithCustomerLiabilityCurrent

us-gaap:ContractWithCustomerLiabilityCurrent


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value222122121623227.71112107.9
Percentage of ContractWithCustomerLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.00.10.10.10.00.00.00.00.0

Debt Current

us-gaap:DebtCurrent

us-gaap:DebtCurrent


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-09-30
Value56554916822221343256556177914221092740608
Percentage of DebtCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.91.90.60.80.71.41.81.92.54.63.62.92.4

us-gaap:DebtCurrent us-gaap:ConsolidatedEntities

srt:NonGuarantorSubsidiaries


Debt
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value123133146330316314413257131
Percentage of DebtCurrent55.262.533.958.556.540.429.023.617.7
Percentage of Assets0.40.40.51.11.11.01.30.80.5
Percentage of Assets srt:NonGuarantorSubsidiaries0.40.40.51.01.01.01.30.80.5

srt:SubsidiaryIssuer


Debt
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value9979179127135354405228
Percentage of DebtCurrent44.837.541.622.524.145.528.520.9
Percentage of Assets0.30.30.60.40.41.11.30.7
Percentage of Assets srt:SubsidiaryIssuer0.60.40.90.70.71.82.21.3

Liabilities Current

us-gaap:LiabilitiesCurrent

us-gaap:LiabilitiesCurrent


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-09-30
Value3844355230492928278631393446343535904046372933333009
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets13.112.310.610.29.210.111.111.411.713.212.213.112.0

us-gaap:LiabilitiesCurrent us-gaap:ConsolidatedEntities

srt:ConsolidationEliminations


Liabilities
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-1854.0-1445.5-2192.7-1460.2-1618.3-1280.0-695.9-768.4-1123.7
Percentage of LiabilitiesCurrent-63.3-51.9-69.8-42.4-47.1-35.6-17.2-20.6-33.7
Percentage of Assets-6.4-4.8-7.1-4.7-5.4-4.2-2.3-2.5-4.4
Percentage of Assets srt:ConsolidationEliminations3.52.63.92.62.92.31.31.53.4

srt:GuarantorSubsidiaries


Liabilities
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value549617181412771291132074811401413
Percentage of LiabilitiesCurrent18.822.157.837.137.636.818.530.642.4
Percentage of Assets1.92.05.94.14.34.32.43.75.6
Percentage of Assets srt:GuarantorSubsidiaries2.52.77.65.45.55.63.24.87.4

srt:NonGuarantorSubsidiaries


Liabilities
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value302029782782305032932938291827062617
Percentage of LiabilitiesCurrent103.1106.988.688.595.981.872.172.678.5
Percentage of Assets10.59.89.09.910.99.59.58.810.3
Percentage of Assets srt:NonGuarantorSubsidiaries9.79.58.69.510.59.49.58.910.4

srt:ParentCompany


Liabilities
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value4404465013943032091574.013
Percentage of LiabilitiesCurrent15.016.016.011.48.85.83.90.10.4
Percentage of Assets1.51.51.61.31.00.70.50.00.1
Percentage of Assets srt:ParentCompany4.03.74.23.22.51.71.30.0391.2

srt:SubsidiaryIssuer


Liabilities
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value772190234185165402918647413
Percentage of LiabilitiesCurrent26.46.87.55.44.811.222.717.412.4
Percentage of Assets2.70.60.80.60.51.33.02.11.6
Percentage of Assets srt:SubsidiaryIssuer4.31.01.21.00.92.15.03.62.9

Operating Lease Liability Current

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OperatingLeaseLiabilityCurrent


Operating
Period End2021-06-302021-03-312020-12-312020-09-30
Value185181183172
Percentage of OperatingLeaseLiabilityCurrent100.0100.0100.0100.0
Percentage of Assets0.60.60.60.6

Other Liabilities Current

us-gaap:OtherLiabilitiesCurrent

us-gaap:OtherLiabilitiesCurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-09-30
Value760691754645683629725571676541592476492
Percentage of OtherLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.62.42.62.22.32.02.31.92.21.81.91.92.0

us-gaap:OtherLiabilitiesCurrent us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries


Other
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value7110777112831299912977
Percentage of OtherLiabilitiesCurrent11.015.812.315.514.719.118.321.916.3
Percentage of Assets0.20.40.30.40.30.40.30.40.3
Percentage of Assets srt:GuarantorSubsidiaries0.30.50.30.50.40.60.40.60.4

srt:NonGuarantorSubsidiaries


Other
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value547523528566469500435430395
Percentage of OtherLiabilitiesCurrent84.876.783.978.182.174.080.472.683.0
Percentage of Assets1.91.71.71.81.61.61.41.41.6
Percentage of Assets srt:NonGuarantorSubsidiaries1.81.71.61.81.51.61.41.41.6

srt:SubsidiaryIssuer


Other
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value2751234618477.3323.2
Percentage of OtherLiabilitiesCurrent4.27.63.86.43.37.01.35.50.7
Percentage of Assets0.10.20.10.10.10.20.00.10.0
Percentage of Assets srt:SubsidiaryIssuer0.20.30.10.20.10.20.00.20.0

Long Term Debt

us-gaap:LongTermDebt us-gaap:CreditFacility, us-gaap:DebtInstrument

us-gaap:LongTermDebt

wrk:DelayedDrawTermLoanCreditAgreement, wrk:FiveYearTermLoan


Long
Period End2020-09-302020-06-302019-09-302019-06-302019-03-312018-12-31
Value6488981396148414831484
Percentage of LongTermDebt100.0100.0100.0100.0100.0100.0
Percentage of Assets2.33.04.64.84.84.8
Percentage of Assets wrk:DelayedDrawTermLoanCreditAgreement wrk:FiveYearTermLoan0.00.00.00.00.00.0

us-gaap:LongTermDebt us-gaap:DebtInstrument

wrk:LongtermDebtExcludingFinanceLeaseObligations


Long
Period End2020-09-30
Value9155
Percentage of LongTermDebt1411.0
Percentage of Assets31.8
Percentage of Assets wrk:LongtermDebtExcludingFinanceLeaseObligations0.0

us-gaap:LongTermDebt us-gaap:DebtInstrument, us-gaap:ExtinguishmentOfDebt

wrk:WellsFargoBankNACreditFacility, wrk:TerminatedUnsecuredTermLoanFacility


Long
Period End2020-09-30
Value648
Percentage of LongTermDebt100.0
Percentage of Assets2.3
Percentage of Assets wrk:WellsFargoBankNACreditFacility wrk:TerminatedUnsecuredTermLoanFacility0.0

us-gaap:LongTermDebt us-gaap:DebtInstrument, us-gaap:ExtinguishmentOfDebt, us-gaap:LongtermDebtType

wrk:BankOfAmericaFiveYearTermLoan, wrk:TerminatedUnsecuredTermLoanFacility, wrk:Unsecured


Long
Period End2020-09-30
Value300
Percentage of LongTermDebt46.2
Percentage of Assets1.0
Percentage of Assets wrk:BankOfAmericaFiveYearTermLoan wrk:TerminatedUnsecuredTermLoanFacility wrk:Unsecured0.0

us-gaap:LongTermDebt us-gaap:DebtInstrument, us-gaap:LongtermDebtType

wrk:BankOfAmericaFiveYearTermLoan, wrk:Unsecured


Long
Period End2021-03-312020-12-312020-09-30
Value250250300
Percentage of LongTermDebt0.00.046.2
Percentage of Assets0.90.91.0
Percentage of Assets wrk:BankOfAmericaFiveYearTermLoan wrk:Unsecured0.00.00.0

wrk:BrazilDelayedDrawCreditFacilities, us-gaap:UnsecuredDebt


Long
Period End2020-09-302019-09-302019-06-30
Value695199125
Percentage of LongTermDebt107.114.38.4
Percentage of Assets2.40.70.4
Percentage of Assets wrk:BrazilDelayedDrawCreditFacilities us-gaap:UnsecuredDebt0.00.00.0

wrk:CooperatieveRabobankUANewYorkBranchRevolvingLineofCredit, us-gaap:UnsecuredDebt


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value330370420250285310330350370460460355
Percentage of LongTermDebt0.00.00.038.531.70.00.025.124.931.031.00.0
Percentage of Assets1.11.31.50.90.91.01.11.21.21.51.51.4
Percentage of Assets wrk:CooperatieveRabobankUANewYorkBranchRevolvingLineofCredit us-gaap:UnsecuredDebt0.00.00.00.00.00.00.00.00.00.00.00.0

wrk:FarmCreditFacility, us-gaap:UnsecuredDebt


Long
Period End2021-06-302021-03-312020-12-312020-09-302019-09-30
Value598598598598598
Percentage of LongTermDebt0.00.00.092.342.9
Percentage of Assets2.02.12.12.12.0
Percentage of Assets wrk:FarmCreditFacility us-gaap:UnsecuredDebt0.00.00.00.00.0

Long Term Debt Noncurrent

us-gaap:LongTermDebtNoncurrent

us-gaap:LongTermDebtNoncurrent


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-09-30
Value81068393877192079840104249649950297599373972856745946
Percentage of LongTermDebtNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets27.629.030.432.032.533.731.231.531.730.531.722.423.7

Long Term Debt And Capital Lease Obligations

us-gaap:LongTermDebtAndCapitalLeaseObligations

us-gaap:LongTermDebtAndCapitalLeaseObligations


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-09-30
Value81068393877192079840104249649950297599373972856745946
Percentage of LongTermDebtAndCapitalLeaseObligations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets27.629.030.432.032.533.731.231.531.730.531.722.423.7

us-gaap:LongTermDebtAndCapitalLeaseObligations us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries


Long
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value196819721975197919821986210124632460
Percentage of LongTermDebtAndCapitalLeaseObligations21.420.019.020.520.920.422.425.343.4
Percentage of Assets6.86.56.46.46.66.46.88.09.7
Percentage of Assets srt:GuarantorSubsidiaries8.98.58.28.48.58.59.010.512.9

srt:NonGuarantorSubsidiaries


Long
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value11311161168710609111078104710411035
Percentage of LongTermDebtAndCapitalLeaseObligations12.311.816.211.09.611.111.210.718.2
Percentage of Assets3.93.85.53.43.03.53.43.44.1
Percentage of Assets srt:NonGuarantorSubsidiaries3.63.75.23.32.93.43.43.44.1

srt:SubsidiaryIssuer


Long
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value610867066761660966086694622362232179
Percentage of LongTermDebtAndCapitalLeaseObligations66.368.264.968.569.568.666.464.038.4
Percentage of Assets21.222.121.821.421.921.720.320.38.6
Percentage of Assets srt:SubsidiaryIssuer33.835.035.034.334.934.933.834.715.5

Deferred Income Tax Liabilities Net

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:DeferredIncomeTaxLiabilitiesNet


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-09-30
Value288528722910291628882878
Percentage of DeferredIncomeTaxLiabilitiesNet100.0100.0100.0100.0100.0100.0
Percentage of Assets9.89.910.110.19.59.5

us-gaap:DeferredIncomeTaxLiabilitiesNet us-gaap:ConsolidatedEntities

srt:ConsolidationEliminations


Deferred
Period End2020-09-302020-06-302019-09-30
Value-59.4-86.7-76.1
Percentage of DeferredIncomeTaxLiabilitiesNet-2.0-3.0-2.6
Percentage of Assets-0.2-0.3-0.3
Percentage of Assets srt:ConsolidationEliminations0.10.20.1

srt:GuarantorSubsidiaries


Deferred
Period End2020-09-302020-06-302019-09-30
Value221310278
Percentage of DeferredIncomeTaxLiabilitiesNet7.610.79.7
Percentage of Assets0.81.00.9
Percentage of Assets srt:GuarantorSubsidiaries1.01.31.2

srt:NonGuarantorSubsidiaries


Deferred
Period End2020-09-302020-06-302019-09-30
Value275526642675
Percentage of DeferredIncomeTaxLiabilitiesNet94.592.393.0
Percentage of Assets9.68.88.9
Percentage of Assets srt:NonGuarantorSubsidiaries8.98.58.5

Minority Interest

us-gaap:MinorityInterest

us-gaap:MinorityInterest


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-09-30
Value19181716161515141312111343
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.10.10.10.00.00.00.00.00.10.2

us-gaap:MinorityInterest us-gaap:ConsolidatedEntities

srt:NonGuarantorSubsidiaries


Minority
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value161615151413121113
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.00.00.00.00.00.1
Percentage of Assets srt:NonGuarantorSubsidiaries0.10.10.00.00.00.00.00.00.1

Other Liabilities Noncurrent

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OtherLiabilitiesNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-09-30
Value15271503153414901468145015131053111611191113994737
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.25.25.35.24.94.74.93.53.63.63.63.92.9

us-gaap:OtherLiabilitiesNoncurrent us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries


Other
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value147152176178131133135130106
Percentage of OtherLiabilitiesNoncurrent9.910.412.211.812.412.012.111.710.7
Percentage of Assets0.50.50.60.60.40.40.40.40.4
Percentage of Assets srt:GuarantorSubsidiaries0.70.70.70.80.60.60.60.60.6

srt:NonGuarantorSubsidiaries


Other
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value1330128112611321909968969967872
Percentage of OtherLiabilitiesNoncurrent89.387.287.087.386.386.786.686.987.7
Percentage of Assets4.64.24.14.33.03.13.23.23.4
Percentage of Assets srt:NonGuarantorSubsidiaries4.34.13.94.12.93.13.13.23.5

srt:SubsidiaryIssuer


Other
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value133512121214141516
Percentage of OtherLiabilitiesNoncurrent0.92.40.90.91.21.31.31.41.6
Percentage of Assets0.00.10.00.00.00.00.00.10.1
Percentage of Assets srt:SubsidiaryIssuer0.10.20.10.10.10.10.10.10.1

Operating Lease Liability Noncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent


Operating
Period End2021-06-302021-03-312020-12-312020-09-30
Value568573585545
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0100.0100.0
Percentage of Assets1.92.02.01.9

Lessee Operating Lease Liability Payments Due Year Two

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo


Lessee
Period End2020-09-30
Value151
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo100.0
Percentage of Assets0.5

Lessee Operating Lease Liability Payments Due Year Three

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree


Lessee
Period End2020-09-30
Value119
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree100.0
Percentage of Assets0.4

Lessee Operating Lease Liability Payments Due Year Four

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour


Lessee
Period End2020-09-30
Value94
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour100.0
Percentage of Assets0.3

Lessee Operating Lease Liability Payments Due Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive


Lessee
Period End2020-09-30
Value63
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive100.0
Percentage of Assets0.2

Lessee Operating Lease Liability Payments Due After Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive


Lessee
Period End2020-09-30
Value164
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive100.0
Percentage of Assets0.6

Operating Lease Liability

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiability


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value753755768718704739752
Percentage of OperatingLeaseLiability100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.62.62.72.52.32.42.4

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue


Lessee
Period End2020-09-30
Value780
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue100.0
Percentage of Assets2.7

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount


Lessee
Period End2020-09-30
Value62
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount100.0
Percentage of Assets0.2

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-09-30
Value114511105110963106301171311482118251166911827116401160311469113931154711353103429728
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets38.938.138.036.938.737.138.238.738.437.937.845.20.00.00.041.242.2

us-gaap:StockholdersEquity us-gaap:ConsolidatedEntities

srt:ConsolidationEliminations


Stockholders
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-48585.0-50877.4-50848.2-51407.6-50474.0-50458.1-49811.6-48910.4-28003.0
Percentage of StockholdersEquity-457.0-434.4-442.8-434.7-432.5-426.6-427.9-421.5-244.2
Percentage of Assets-168.8-168.0-164.2-166.2-167.4-163.8-162.3-159.5-110.4
Percentage of Assets srt:ConsolidationEliminations90.691.690.091.490.991.692.992.685.1

srt:GuarantorSubsidiaries


Stockholders
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value170651797117162174111711117139169931645711731
Percentage of StockholdersEquity160.5153.4149.5147.2146.6144.9146.0141.8102.3
Percentage of Assets59.359.455.456.356.755.655.453.746.3
Percentage of Assets srt:GuarantorSubsidiaries76.977.371.673.673.373.372.869.861.6

srt:NonGuarantorSubsidiaries


Stockholders
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value211012142922025221512186221874215762139116271
Percentage of StockholdersEquity198.5183.0191.8187.3187.3184.9185.3184.4141.9
Percentage of Assets73.370.871.171.672.571.070.369.864.2
Percentage of Assets srt:NonGuarantorSubsidiaries67.968.668.469.269.669.970.170.564.7

srt:ParentCompany


Stockholders
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value1063011713114821182511669118271164011603-9.9
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0-0.1
Percentage of Assets36.938.737.138.238.738.437.937.8-0.0
Percentage of Assets srt:ParentCompany96.096.395.896.897.598.398.7100.0-291.2

srt:SubsidiaryIssuer


Stockholders
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value104171147611661118441150011443112421106111479
Percentage of StockholdersEquity98.098.0101.6100.298.596.896.695.3100.1
Percentage of Assets36.237.937.738.338.137.136.636.145.3
Percentage of Assets srt:SubsidiaryIssuer57.759.960.461.460.859.661.161.681.5

Stockholders Equity Including Portion Attributable To Noncontrolling Interest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-09-30
Value114701107010980106471172911498118401168411841116531161511482114121158211393103869830
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets39.038.238.137.038.737.138.338.738.438.037.945.30.00.00.041.442.7

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:ConsolidatedEntities

srt:ConsolidationEliminations


Stockholders
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-48585.0-50877.4-50848.2-51407.6-50474.0-50458.1-49811.6-48910.4-28003.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-456.3-433.7-442.2-434.2-432.0-426.1-427.4-421.1-243.9
Percentage of Assets-168.8-168.0-164.2-166.2-167.4-163.8-162.3-159.5-110.4
Percentage of Assets srt:ConsolidationEliminations90.691.690.091.490.991.692.992.685.1

srt:GuarantorSubsidiaries


Stockholders
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value170651797117162174111711117139169931645711731
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest160.3153.2149.3147.1146.4144.7145.8141.7102.2
Percentage of Assets59.359.455.456.356.755.655.453.746.3
Percentage of Assets srt:GuarantorSubsidiaries76.977.371.673.673.373.372.869.861.6

srt:NonGuarantorSubsidiaries


Stockholders
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value211182144622040221662187621888215882140316284
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest198.3182.8191.7187.2187.2184.8185.3184.3141.8
Percentage of Assets73.470.871.271.772.571.070.369.864.2
Percentage of Assets srt:NonGuarantorSubsidiaries68.068.768.469.269.769.970.170.564.7

srt:ParentCompany


Stockholders
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value1063011713114821182511669118271164011603-9.9
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest99.899.999.999.999.999.999.999.9-0.1
Percentage of Assets36.938.737.138.238.738.437.937.8-0.0
Percentage of Assets srt:ParentCompany96.096.395.896.897.598.398.7100.0-291.2

srt:SubsidiaryIssuer


Stockholders
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value104171147611661118441150011443112421106111479
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest97.897.8101.4100.098.496.696.595.2100.0
Percentage of Assets36.237.937.738.338.137.136.636.145.3
Percentage of Assets srt:SubsidiaryIssuer57.759.960.461.460.859.661.161.681.5

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-09-302015-09-30
Value-1040.8-1194.3-1115.3-1319.9-1387.4-1419.0-1034.9-1069.2-695.4-725.5-754.8-695.3-674.3-441.7-497.6-457.3-626.4-780.2
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-9.1-10.8-10.2-12.4-11.8-12.3-8.7-9.2-5.9-6.2-6.5-6.1-5.9-3.8-4.4-4.4-6.40.0
Percentage of Assets-3.5-4.1-3.9-4.6-4.6-4.6-3.3-3.5-2.3-2.4-2.5-2.70.00.00.0-1.8-2.70.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-09-302015-09-30
Value111181105710949109161085710784107701073910715106921072010588106371068410651106241045810767
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest96.999.999.7102.592.693.891.091.990.591.892.392.293.292.393.5102.3106.40.0
Percentage of Assets37.838.238.037.935.934.834.835.634.834.835.041.80.00.00.042.345.40.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-09-302015-09-30
Value2.72.72.62.62.62.62.62.62.62.62.62.52.52.62.52.52.52.6
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NoncontrollingInterest


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-09-302015-09-30
Value19181716161515141312111319344043101132
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.20.20.20.20.10.10.10.10.10.10.10.10.20.30.40.41.00.0
Percentage of Assets0.10.10.10.10.10.10.00.00.00.00.00.10.00.00.00.20.40.0
Percentage of Assets us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-09-302015-09-30
Value137011861126103122402114208719971805167116351573142713021196172-105.91661
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest12.010.710.39.719.118.417.617.115.214.314.113.712.511.210.51.7-1.10.0
Percentage of Assets4.74.13.93.67.46.86.76.65.95.45.36.20.00.00.00.7-0.50.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-09-30
Value2700000.02700000.02600000.02600000.02600000.02600000.02600000.02600000.02600000.02600000.02600000.02500000.02500000.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.0

Additional Paid In Capital Common Stock

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:AdditionalPaidInCapitalCommonStock


Additional
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-09-30
Value11118110571094910916108571078410770107391071510692107201058810624
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets37.838.238.037.935.934.834.835.634.834.835.041.842.3

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


Retained
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-09-30
Value137011861126103122402114208719971805167116351573172
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.74.13.93.67.46.86.76.65.95.45.36.20.7

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-09-30
Value-1040.8-1194.3-1115.3-1319.9-1387.4-1419.0-1034.9-1069.2-695.4-725.5-754.8-695.3-674.3-441.7-497.6-457.3-626.4
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-3.5-4.1-3.9-4.6-4.6-4.6-3.3-3.5-2.3-2.4-2.5-2.70.00.00.0-1.8-2.7

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-09-30
Value-705.9-714.4-721.1-727.7-743.1-752.9-762.3-698.0-452.3-457.1-460.5-465.9-454.0-458.8-462.0-462.5-523.8
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax67.859.864.755.153.653.173.765.365.063.061.067.067.3103.992.8101.183.6
Percentage of Assets-2.4-2.5-2.5-2.5-2.5-2.4-2.5-2.3-1.5-1.5-1.5-1.80.00.00.0-1.8-2.3
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-09-30
Value-1.3-2.8-4.2-5.6-7.2-7.6-1.10.7-0.2-0.2
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax0.10.20.40.40.50.50.1-0.10.00.0
Percentage of Assets-0.0-0.0-0.0-0.0-0.0-0.0-0.00.0-0.0-0.0
Percentage of Assets us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedTranslationAdjustment


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-09-30
Value-333.6-477.1-390.0-586.6-637.1-658.5-271.5-371.9-242.9-268.2-294.1-229.2-220.117-36.85.2-102.4
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax32.139.935.044.445.946.426.234.834.937.039.033.032.6-3.97.4-1.116.3
Percentage of Assets-1.1-1.6-1.4-2.0-2.1-2.1-0.9-1.2-0.8-0.9-1.0-0.90.00.00.00.0-0.4
Percentage of Assets us-gaap:AccumulatedTranslationAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Minority Interest

us-gaap:MinorityInterest

us-gaap:MinorityInterest


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-09-30
Value19181716161515141312111343
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.10.10.10.00.00.00.00.00.10.2

us-gaap:MinorityInterest us-gaap:ConsolidatedEntities

srt:NonGuarantorSubsidiaries


Minority
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value161615151413121113
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.00.00.00.00.00.1
Percentage of Assets srt:NonGuarantorSubsidiaries0.10.10.00.00.00.00.00.00.1

New Accounting Pronouncement Or Change In Accounting Principle Effect Of Adoption Quantification

us-gaap:NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoptionQuantification us-gaap:StatementEquityComponents

us-gaap:NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoptionQuantification

us-gaap:RetainedEarnings


New
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value0.00.00.0730.00.00.043
Percentage of NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoptionQuantification0.00.00.0100.00.00.00.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.0

Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue us-gaap:StatementEquityComponents

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value233119316816131215181717151914
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value7501327197317401674319107343613031285661228245
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax15.63.016.316.417.53.89.719.615.77.87.030.316.05.76.3

us-gaap:NetCashProvidedByUsedInOperatingActivities us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries


Net
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-79.5-193.1460-17.1-3.8642322-519.0308336-195.3-73.5
Percentage of NetCashProvidedByUsedInOperatingActivities-10.9-26.1274.9-4.0-0.487.589.0-171.224.050.8-85.5-30.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.8-4.610.4-0.4-0.113.77.0-12.07.38.1-4.9-1.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:GuarantorSubsidiaries-13.1-31.973.0-2.9-0.6100.050.4-83.345.649.9-30.8-12.1

srt:NonGuarantorSubsidiaries


Net
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value186728-213.7335498-173.2441163282-807.51292248
Percentage of NetCashProvidedByUsedInOperatingActivities25.498.5-127.577.854.7-23.612.4383.922.0-122.0566.0101.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.217.2-4.87.610.7-3.71.026.96.7-19.532.26.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries4.117.0-4.87.510.6-3.71.029.86.7-19.532.07.2

srt:ParentCompany


Net
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value46481221041071111711470.10.0
Percentage of NetCashProvidedByUsedInOperatingActivities6.36.673.324.211.815.247.448.60.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.01.12.82.42.32.43.73.40.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.0

srt:SubsidiaryIssuer


Net
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value578155-202.38.3308-419.0-176.883204847-598.3110
Percentage of NetCashProvidedByUsedInOperatingActivities79.121.1-120.71.933.9-57.0-48.927.515.9128.0-262.144.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.93.7-4.50.26.6-8.9-3.81.94.820.5-14.92.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:SubsidiaryIssuer0.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-190.3-54.8-140.4-96.1-236.1-228.4-360.9-378.9-350.1-277.8-3572.8-755.1-102.7-250.5-190.6
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-4.0-1.2-3.2-2.1-5.6-5.1-8.2-8.1-7.5-6.0-82.6-17.8-2.5-6.2-4.9

us-gaap:NetCashProvidedByUsedInInvestingActivities us-gaap:ConsolidatedEntities

srt:ConsolidationEliminations


Net
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-0.7-1.9-0.1-3.0-2.4-73.1-0.6-2608.21.4745-746.4-83.7
Percentage of NetCashProvidedByUsedInInvestingActivities0.70.80.00.80.620.90.273.0-0.2-725.4298.043.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.0-0.0-0.0-0.1-0.1-1.6-0.0-60.30.018.0-18.6-2.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations0.10.30.00.50.311.60.11321.9-0.2-110.6114.743.8

srt:GuarantorSubsidiaries


Net
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value6.86.90.18.06.9224.62.9-9.9-415.244384
Percentage of NetCashProvidedByUsedInInvestingActivities-7.1-2.9-0.0-2.2-1.8-6.4-1.7-0.11.3404.3-177.2-44.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.20.00.20.10.50.10.1-0.2-10.011.12.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:GuarantorSubsidiaries1.11.10.01.41.13.50.70.5-1.5-61.770.013.9

srt:NonGuarantorSubsidiaries


Net
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-103.7-241.1-228.4-365.9-383.5-299.4-281.7149-260.8168-549.0-191.2
Percentage of NetCashProvidedByUsedInInvestingActivities107.9102.1100.0101.4101.285.5101.4-4.234.5-164.1219.2100.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-2.3-5.7-5.1-8.3-8.2-6.4-6.13.4-6.24.1-13.7-4.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries-2.3-5.6-5.1-8.2-8.1-6.4-6.13.8-6.14.1-13.6-5.5

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-356.7-0.5-584.1-669.0-859.2568-61.3-559.3-365.3-191.82896-335.9-356.9-16.8-45.5
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-7.4-0.0-13.3-15.0-20.312.8-1.4-12.0-7.8-4.266.9-7.9-8.6-0.4-1.2

us-gaap:NetCashProvidedByUsedInFinancingActivities us-gaap:ConsolidatedEntities

srt:ConsolidationEliminations


Net
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0.71.90.13.02.4-499.30.63180-1.3-1030.91020123
Percentage of NetCashProvidedByUsedInFinancingActivities-0.1-0.20.0-4.9-0.4136.7-0.3109.80.4288.8-6075.6-271.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.10.1-10.60.073.5-0.0-24.925.43.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations-0.1-0.3-0.0-0.5-0.379.3-0.1-1612.10.2153.0-156.8-64.6

srt:GuarantorSubsidiaries


Net
Period End2020-09-302019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0.02.2-672.3-357.575-1.6248-272.4-5.8
Percentage of NetCashProvidedByUsedInFinancingActivities-0.0-0.4184.0186.42.60.5-69.61621.412.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.0-14.3-7.71.7-0.06.0-6.8-0.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:GuarantorSubsidiaries0.00.3-104.6-55.912.1-0.236.9-43.0-1.0

srt:NonGuarantorSubsidiaries


Net
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-43.2-551.448848-147.7498159-1245.4-130.9672-757.9-53.8
Percentage of NetCashProvidedByUsedInFinancingActivities6.564.286.0-79.126.4-136.6-83.4-43.039.0-188.34511.3118.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.0-13.011.01.1-3.210.63.5-28.8-3.116.2-18.9-1.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries-1.0-12.810.91.1-3.110.73.4-31.9-3.116.2-18.8-1.5

srt:ParentCompany


Net
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-46.4-48.6-122.8-104.5-107.5-111.6-171.7415-0.10.0
Percentage of NetCashProvidedByUsedInFinancingActivities6.95.7-21.6170.519.230.689.514.30.0-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.0-1.1-2.8-2.4-2.3-2.4-3.79.6-0.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.0

srt:SubsidiaryIssuer


Net
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-580.1-156.1202-8.3-308.7419176470-202.0-246.5-3.2-109.5
Percentage of NetCashProvidedByUsedInFinancingActivities86.718.235.613.555.2-114.7-92.216.260.169.119.0240.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-13.0-3.74.6-0.2-6.68.93.810.9-4.8-6.0-0.1-2.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:SubsidiaryIssuer0.00.00.00.00.00.00.00.00.00.00.00.0

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value215802.7-40.4-348.74834.8-27.524-106.5-376.1184180-39.98.3
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.51.80.1-0.9-8.210.90.1-0.60.5-2.3-8.74.34.4-1.00.2

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries


Cash
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-72.7-291.2460-9.15.3-7.1-30.8-440.4297169-23.84.9
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect180.083.595.3-189.6-19.3-28.528.9117.1161.393.959.659.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.6-6.910.4-0.20.1-0.2-0.7-10.27.04.1-0.60.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:GuarantorSubsidiaries-12.0-48.173.1-1.50.8-1.1-4.8-70.744.025.1-3.80.8

srt:NonGuarantorSubsidiaries


Cash
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value32-57.32213-32.832-75.764-113.211-15.62.9
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect-80.016.44.7289.6119.3128.571.1-17.1-61.56.139.134.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.7-1.40.50.3-0.70.7-1.61.5-2.70.3-0.40.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries0.7-1.30.50.3-0.70.7-1.61.7-2.70.3-0.40.1

Deferred Income Tax Expense Benefit

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:DeferredIncomeTaxExpenseBenefit


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value1.0-35.0-19.6264.78.33.10.7-3.22514936011-1234.6
Percentage of DeferredIncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Depreciation Depletion And Amortization

us-gaap:DepreciationDepletionAndAmortization

us-gaap:DepreciationDepletionAndAmortization


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value369361364365365374381383385383359314315316306
Percentage of DepreciationDepletionAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DepreciationDepletionAndAmortization us-gaap:StatementBusinessSegments

us-gaap:Corporate


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1.31.41.21.41.41.71.61.53.21.82.0
Percentage of DepreciationDepletionAndAmortization0.40.40.30.40.40.50.40.40.80.50.6

wrk:ConsumerPackaging


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value134130131129131133135133140139138
Percentage of DepreciationDepletionAndAmortization36.636.035.935.535.935.635.534.936.536.338.6

wrk:CorrugatedPackaging


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value232229232234233239244248241242218
Percentage of DepreciationDepletionAndAmortization63.163.663.764.163.764.064.164.762.763.360.8

Increase Decrease In Accounts Payable

us-gaap:IncreaseDecreaseInAccountsPayable

us-gaap:IncreaseDecreaseInAccountsPayable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value85116-5.4153-133.4-59.2-47.587175.1-148.51915622-89.4
Percentage of IncreaseDecreaseInAccountsPayable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Accounts Receivable

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInAccountsReceivable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value76407-150.251-142.8214-153.9-179.02352-169.7-304.014926828
Percentage of IncreaseDecreaseInAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Inventories

us-gaap:IncreaseDecreaseInInventories

us-gaap:IncreaseDecreaseInInventories


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value503544-92.57.5-20.78371-28.0-3.97131-42.29.074
Percentage of IncreaseDecreaseInInventories100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value7501327197317401674319107343613031285661228245
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax15.63.016.316.417.53.89.719.615.77.87.030.316.05.76.3

us-gaap:NetCashProvidedByUsedInOperatingActivities us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries


Net
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-79.5-193.1460-17.1-3.8642322-519.0308336-195.3-73.5
Percentage of NetCashProvidedByUsedInOperatingActivities-10.9-26.1274.9-4.0-0.487.589.0-171.224.050.8-85.5-30.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.8-4.610.4-0.4-0.113.77.0-12.07.38.1-4.9-1.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:GuarantorSubsidiaries-13.1-31.973.0-2.9-0.6100.050.4-83.345.649.9-30.8-12.1

srt:NonGuarantorSubsidiaries


Net
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value186728-213.7335498-173.2441163282-807.51292248
Percentage of NetCashProvidedByUsedInOperatingActivities25.498.5-127.577.854.7-23.612.4383.922.0-122.0566.0101.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.217.2-4.87.610.7-3.71.026.96.7-19.532.26.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries4.117.0-4.87.510.6-3.71.029.86.7-19.532.07.2

srt:ParentCompany


Net
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value46481221041071111711470.10.0
Percentage of NetCashProvidedByUsedInOperatingActivities6.36.673.324.211.815.247.448.60.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.01.12.82.42.32.43.73.40.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.0

srt:SubsidiaryIssuer


Net
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value578155-202.38.3308-419.0-176.883204847-598.3110
Percentage of NetCashProvidedByUsedInOperatingActivities79.121.1-120.71.933.9-57.0-48.927.515.9128.0-262.144.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.93.7-4.50.26.6-8.9-3.81.94.820.5-14.92.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:SubsidiaryIssuer0.00.00.00.00.00.00.00.00.00.00.00.0

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value250112152-1156.0178148138310252160139279268223113519632810380
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.22.53.5-25.94.23.33.16.75.43.53.26.66.55.629.14.88.92.82.3

us-gaap:NetIncomeLoss us-gaap:ConsolidatedEntities

srt:ConsolidationEliminations


Net
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value2467-647.0-511.4-503.4-1127.2-501.3-526.1-555.9-447.3-441.0-371.9-2015.7
Percentage of NetIncomeLoss-213.4-362.5-345.3-363.5-362.7-198.5-328.0-399.6-160.0-164.4-166.6-177.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax55.2-15.3-11.5-11.4-24.2-10.7-11.4-12.8-10.6-10.7-9.3-51.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations-384.497.777.280.4160.579.780.0281.864.965.457.11053.7

srt:GuarantorSubsidiaries


Net
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-976.7221123132339-15.41692321811851391030
Percentage of NetIncomeLoss84.5123.983.595.6109.3-6.1105.7167.165.069.062.390.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-21.85.22.83.07.3-0.33.75.44.34.53.526.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:GuarantorSubsidiaries-161.236.619.622.553.3-2.426.537.326.927.521.9169.6

srt:NonGuarantorSubsidiaries


Net
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-356.5200187196356301217167265255232984
Percentage of NetIncomeLoss30.8112.2126.7142.2114.8119.3135.7120.195.095.4104.386.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-8.04.74.24.57.76.44.73.96.36.25.825.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries-7.94.74.24.47.66.44.74.36.26.25.828.3

srt:ParentCompany


Net
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-1156.0178148138310252160139-8.9-0.6-0.1
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0-3.2-0.2-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-25.94.23.33.16.75.43.53.2-0.2-0.0-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.00.0

srt:SubsidiaryIssuer


Net
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-1134.22252001744302151381562882682231135
Percentage of NetIncomeLoss98.1126.4135.0125.7138.685.286.6112.5103.2100.2100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-25.45.34.53.99.34.63.03.66.86.55.629.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:SubsidiaryIssuer0.00.00.00.00.00.00.00.00.00.00.00.0

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value251114152-1154.518014813931225316113928027122411331953269878
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.22.63.5-25.84.23.33.26.75.43.53.26.66.65.629.14.88.82.72.3

us-gaap:ProfitLoss us-gaap:ConsolidatedEntities

srt:ConsolidationEliminations


Profit
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value2467-647.0-511.4-503.4-1127.2-501.3-526.1-555.9-447.3-441.0-371.9-2015.7
Percentage of ProfitLoss-213.7-359.4-343.5-360.9-360.8-197.5-325.0-397.6-159.8-162.6-165.7-177.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax55.2-15.3-11.5-11.4-24.2-10.7-11.4-12.8-10.6-10.7-9.3-51.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations-384.497.777.280.4160.579.780.0281.864.965.457.11053.7

srt:GuarantorSubsidiaries


Profit
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-976.7221123132339-15.41692321811851391030
Percentage of ProfitLoss84.6122.883.194.9108.7-6.1104.7166.264.968.261.990.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-21.85.22.83.07.3-0.33.75.44.34.53.526.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:GuarantorSubsidiaries-161.236.619.622.553.3-2.426.537.326.927.521.9169.6

srt:NonGuarantorSubsidiaries


Profit
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-355.0201188197358302219167265259234983
Percentage of ProfitLoss30.7112.1126.6141.9114.7119.2135.4120.095.095.5104.386.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-7.94.84.24.57.76.54.73.96.36.35.825.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries-7.94.74.24.47.66.54.74.36.36.35.828.3

srt:ParentCompany


Profit
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-1156.0178148138310252160139-8.9-0.6-0.1
Percentage of ProfitLoss100.199.299.599.399.599.599.199.5-3.2-0.2-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-25.94.23.33.16.75.43.53.2-0.2-0.0-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.00.0

srt:SubsidiaryIssuer


Profit
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-1134.22252001744302151381562882682231135
Percentage of ProfitLoss98.2125.4134.3124.8137.984.885.8111.9103.099.199.5100.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-25.45.34.53.99.34.63.03.66.86.55.629.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:SubsidiaryIssuer0.00.00.00.00.00.00.00.00.00.00.00.0

Share Based Compensation

us-gaap:ShareBasedCompensation

us-gaap:ShareBasedCompensation


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value233120316815131215181717151914
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-190.3-54.8-140.4-96.1-236.1-228.4-360.9-378.9-350.1-277.8-3572.8-755.1-102.7-250.5-190.6
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-4.0-1.2-3.2-2.1-5.6-5.1-8.2-8.1-7.5-6.0-82.6-17.8-2.5-6.2-4.9

us-gaap:NetCashProvidedByUsedInInvestingActivities us-gaap:ConsolidatedEntities

srt:ConsolidationEliminations


Net
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-0.7-1.9-0.1-3.0-2.4-73.1-0.6-2608.21.4745-746.4-83.7
Percentage of NetCashProvidedByUsedInInvestingActivities0.70.80.00.80.620.90.273.0-0.2-725.4298.043.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.0-0.0-0.0-0.1-0.1-1.6-0.0-60.30.018.0-18.6-2.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations0.10.30.00.50.311.60.11321.9-0.2-110.6114.743.8

srt:GuarantorSubsidiaries


Net
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value6.86.90.18.06.9224.62.9-9.9-415.244384
Percentage of NetCashProvidedByUsedInInvestingActivities-7.1-2.9-0.0-2.2-1.8-6.4-1.7-0.11.3404.3-177.2-44.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.20.00.20.10.50.10.1-0.2-10.011.12.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:GuarantorSubsidiaries1.11.10.01.41.13.50.70.5-1.5-61.770.013.9

srt:NonGuarantorSubsidiaries


Net
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-103.7-241.1-228.4-365.9-383.5-299.4-281.7149-260.8168-549.0-191.2
Percentage of NetCashProvidedByUsedInInvestingActivities107.9102.1100.0101.4101.285.5101.4-4.234.5-164.1219.2100.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-2.3-5.7-5.1-8.3-8.2-6.4-6.13.4-6.24.1-13.7-4.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries-2.3-5.6-5.1-8.2-8.1-6.4-6.13.8-6.14.1-13.6-5.5

Payments To Acquire Productive Assets

us-gaap:PaymentsToAcquireProductiveAssets

us-gaap:PaymentsToAcquireProductiveAssets


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value202132170117244241374392351303322334238212214
Percentage of PaymentsToAcquireProductiveAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireProductiveAssets us-gaap:ConsolidatedEntities

srt:NonGuarantorSubsidiaries


Payments
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value117244241374394351302320337234212214
Percentage of PaymentsToAcquireProductiveAssets100.0100.0100.0100.0100.6100.099.799.5101.098.399.8100.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-356.7-0.5-584.1-669.0-859.2568-61.3-559.3-365.3-191.82896-335.9-356.9-16.8-45.5
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-7.4-0.0-13.3-15.0-20.312.8-1.4-12.0-7.8-4.266.9-7.9-8.6-0.4-1.2

us-gaap:NetCashProvidedByUsedInFinancingActivities us-gaap:ConsolidatedEntities

srt:ConsolidationEliminations


Net
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0.71.90.13.02.4-499.30.63180-1.3-1030.91020123
Percentage of NetCashProvidedByUsedInFinancingActivities-0.1-0.20.0-4.9-0.4136.7-0.3109.80.4288.8-6075.6-271.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.10.1-10.60.073.5-0.0-24.925.43.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations-0.1-0.3-0.0-0.5-0.379.3-0.1-1612.10.2153.0-156.8-64.6

srt:GuarantorSubsidiaries


Net
Period End2020-09-302019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0.02.2-672.3-357.575-1.6248-272.4-5.8
Percentage of NetCashProvidedByUsedInFinancingActivities-0.0-0.4184.0186.42.60.5-69.61621.412.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.0-14.3-7.71.7-0.06.0-6.8-0.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:GuarantorSubsidiaries0.00.3-104.6-55.912.1-0.236.9-43.0-1.0

srt:NonGuarantorSubsidiaries


Net
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-43.2-551.448848-147.7498159-1245.4-130.9672-757.9-53.8
Percentage of NetCashProvidedByUsedInFinancingActivities6.564.286.0-79.126.4-136.6-83.4-43.039.0-188.34511.3118.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.0-13.011.01.1-3.210.63.5-28.8-3.116.2-18.9-1.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries-1.0-12.810.91.1-3.110.73.4-31.9-3.116.2-18.8-1.5

srt:ParentCompany


Net
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-46.4-48.6-122.8-104.5-107.5-111.6-171.7415-0.10.0
Percentage of NetCashProvidedByUsedInFinancingActivities6.95.7-21.6170.519.230.689.514.30.0-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.0-1.1-2.8-2.4-2.3-2.4-3.79.6-0.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.0

srt:SubsidiaryIssuer


Net
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-580.1-156.1202-8.3-308.7419176470-202.0-246.5-3.2-109.5
Percentage of NetCashProvidedByUsedInFinancingActivities86.718.235.613.555.2-114.7-92.216.260.169.119.0240.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-13.0-3.74.6-0.2-6.68.93.810.9-4.8-6.0-0.1-2.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:SubsidiaryIssuer0.00.00.00.00.00.00.00.00.00.00.00.0

Proceeds From Issuance Of Long Term Debt

us-gaap:ProceedsFromIssuanceOfLongTermDebt

us-gaap:ProceedsFromIssuanceOfLongTermDebt


Proceeds
Period End2020-09-302019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0.00.09990.014980.00.0
Percentage of ProceedsFromIssuanceOfLongTermDebt0.00.0100.00.0100.00.00.0

us-gaap:ProceedsFromIssuanceOfLongTermDebt us-gaap:ConsolidatedEntities

srt:SubsidiaryIssuer


Proceeds
Period End2020-09-302019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0.00.09990.014980.00.0
Percentage of ProceedsFromIssuanceOfLongTermDebt0.00.0100.00.0100.00.00.0

Payments Of Dividends Common Stock

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:PaymentsOfDividendsCommonStock


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value6453525151120120117117117116111110109109
Percentage of PaymentsOfDividendsCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsOfDividendsCommonStock us-gaap:ConsolidatedEntities

srt:ParentCompany


Payments
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value5151120120117117117116
Percentage of PaymentsOfDividendsCommonStock100.0100.0100.0100.0100.0100.0100.0100.0

Effective Income Tax Rate Continuing Operations

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:EffectiveIncomeTaxRateContinuingOperations


Effective
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312018-06-302018-03-312017-12-31
Value23.621.024.80.0960.280.250.2340.2260.310.2370.077-17.798
Percentage of EffectiveIncomeTaxRateContinuingOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:EmployeeStockOption


Share
Period End2020-09-302019-09-302018-09-302017-09-30
Value35.2633.3233.7530.51
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice100.0100.0100.0100.0

us-gaap:StockAppreciationRightsSARS


Share
Period End2020-09-302019-09-302018-09-302017-09-30
Value30.4228.4127.3625.3
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice86.385.381.182.9

Deferred Tax Liabilities

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxLiabilities


Deferred
Period End2020-09-302019-09-302018-09-302017-09-30
Value2883284422863377
Percentage of DeferredTaxLiabilities100.0100.0100.0100.0

Unrecognized Tax Benefits

us-gaap:UnrecognizedTaxBenefits

us-gaap:UnrecognizedTaxBenefits


Unrecognized
Period End2020-09-302019-09-302019-06-302019-03-312018-12-312018-09-302017-09-302016-09-302015-09-30
Value206224231231229127148166106
Percentage of UnrecognizedTaxBenefits100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Valuation Allowance

us-gaap:DeferredTaxAssetsValuationAllowance

us-gaap:DeferredTaxAssetsValuationAllowance


Deferred
Period End2020-09-302019-09-302018-09-302017-09-30
Value257218229219
Percentage of DeferredTaxAssetsValuationAllowance100.0100.0100.0100.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalOther us-gaap:StatementEquityComponents

us-gaap:AdjustmentsToAdditionalPaidInCapitalOther

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2021-06-30
Value-1100000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalOther100.0

us-gaap:BusinessCombinationAcquisitionRelatedCosts

us-gaap:BusinessCombinationAcquisitionRelatedCosts


Business
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-0.30.50.20.0-0.20.30.10.30.93.024273.45.71.9
Percentage of BusinessCombinationAcquisitionRelatedCosts100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BusinessCombinationAcquisitionRelatedCosts us-gaap:StatementBusinessSegments

us-gaap:AllOtherSegments


Business
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-0.30.50.20.0-0.20.30.10.30.93.024273.45.71.9
Percentage of BusinessCombinationAcquisitionRelatedCosts100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BusinessCombinationIntegrationRelatedCosts

us-gaap:BusinessCombinationIntegrationRelatedCosts


Business
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-0.20.40.92.82.58.15.311107.44.60.66.84.99.7
Percentage of BusinessCombinationIntegrationRelatedCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BusinessCombinationIntegrationRelatedCosts us-gaap:StatementBusinessSegments

us-gaap:AllOtherSegments


Business
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-0.20.40.92.82.58.15.311107.44.66.06.84.99.7
Percentage of BusinessCombinationIntegrationRelatedCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.01000.0100.0100.0100.0

us-gaap:CashFlowsBetweenTransfereeAndTransferorProceedsFromCollectionsReinvestedInRevolvingPeriodTransfers

us-gaap:CashFlowsBetweenTransfereeAndTransferorProceedsFromCollectionsReinvestedInRevolvingPeriodTransfers


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value668626644604625612606529485485470390399414369
Percentage of CashFlowsBetweenTransfereeAndTransferorProceedsFromCollectionsReinvestedInRevolvingPeriodTransfers100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStockDividendsPerShareCashPaid

us-gaap:CommonStockDividendsPerShareCashPaid


Common
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0.20.20.4650.4650.4550.4550.4550.4550.430.430.430.43
Percentage of CommonStockDividendsPerShareCashPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CostMethodInvestmentsRealizedGains

us-gaap:CostMethodInvestmentsRealizedGains


Cost
Period End2021-06-302021-03-312020-12-31
Value1.30.014
Percentage of CostMethodInvestmentsRealizedGains100.00.0100.0

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-200000.0300000.0300000.00-500000.0200000.0200000.0500000.0700000.0400000.0400000.0-100000.0-300000.0100000.0
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-9800000.0-8000000.0-7900000.0-11700000.0-11400000.0-11800000.0-11900000.0-5800000.0-6300000.0-5400000.0-7000000.0-5300000.0-6700000.0-4600000.0-4600000.0
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses4900.0-2666.7-2633.30.02280.0-5900.0-5950.0-1160.0-900.0-1350.0-1750.05300.02233.3-4600.00.0

us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-600000.0-600000.0-600000.0-600000.0-700000.0-700000.0-700000.0-700000.0-700000.0-700000.0-700000.0-1200000.0-1100000.0-1000000.0-1100000.0
Percentage of DefinedBenefitPlanAmortizationOfPriorServiceCostCredit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value2300000.02000000.02000000.02100000.01900000.02100000.01400000.01300000.01300000.01300000.01300000.01200000.01300000.01100000.01100000.0
Percentage of DefinedBenefitPlanAmortizationOfPriorServiceCostCredit-383.3-333.3-333.3-350.0-271.4-300.0-200.0-185.7-185.7-185.7-185.7-100.0-118.2-110.0-100.0

us-gaap:DefinedBenefitPlanContributionsByEmployer us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanContributionsByEmployer

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312018-06-302018-03-312017-12-31
Value1.61.81.31.61.72.02.21.72.72.32.02.8
Percentage of DefinedBenefitPlanContributionsByEmployer100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312018-06-302018-03-312017-12-31
Value4.85.25.64.64.18.56.65.54.010128.5
Percentage of DefinedBenefitPlanContributionsByEmployer300.0288.9430.8287.5241.2425.0300.0323.5148.1469.6610.0303.6

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value929291909090908585858281828282
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanInterestCost us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanInterestCost

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value1.51.51.41.61.71.81.81.91.92.01.91.82.12.02.0
Percentage of DefinedBenefitPlanInterestCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value474646494949495858585650515150
Percentage of DefinedBenefitPlanInterestCost3153.33113.33314.33093.82923.52750.02772.23084.23094.72935.02973.72827.82452.42565.02545.0

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value1.30.90.81.31.81.21.31.10.71.21.10.91.71.31.3
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-21.0-21.6-21.5-10.4-16.9-12.4-14.2-7.1-10.7-8.1-7.0-198.2-8.8-12.7166
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost-1615.4-2400.0-2687.5-800.0-938.9-1033.3-1092.3-645.5-1528.6-675.0-636.4-22022.2-517.6-976.912838.5

us-gaap:DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-09-302020-06-302020-03-31
Value00-400000.0
Percentage of DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments0.00.0100.0

us-gaap:DefinedBenefitPlanServiceCost us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanServiceCost

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0.20.30.30.30.30.30.40.40.20.30.30.30.40.40.4
Percentage of DefinedBenefitPlanServiceCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value1113131311141310101110119.41211
Percentage of DefinedBenefitPlanServiceCost5600.04533.34500.04466.73966.74733.33275.02575.05100.03800.03633.33766.72350.03125.02900.0

us-gaap:DividendsCommonStockCash us-gaap:StatementEquityComponents

us-gaap:DividendsCommonStockCash

us-gaap:RetainedEarnings


Dividends
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value6552535252121121118118124117111112111110
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations


Effect
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value123.37.8-7.06.4-23.8-4.20.15.71.2-3.0-4.2-22.1-0.9-1.0
Percentage of EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations us-gaap:ConsolidatedEntities

srt:NonGuarantorSubsidiaries


Effect
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-7.06.4-23.8-4.20.15.71.2-3.0-4.3-22.1-0.9-0.9
Percentage of EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations100.0100.0100.0100.0100.0100.0100.0100.0102.4100.0100.090.0

us-gaap:FinanceLeaseInterestExpense

us-gaap:FinanceLeaseInterestExpense


Finance
Period End2020-09-302020-06-302020-03-31
Value1900000.01900000.02000000.0
Percentage of FinanceLeaseInterestExpense100.0100.0100.0

us-gaap:FinanceLeaseRightOfUseAssetAmortization

us-gaap:FinanceLeaseRightOfUseAssetAmortization


Finance
Period End2020-09-302020-06-302020-03-31
Value2.52.52.7
Percentage of FinanceLeaseRightOfUseAssetAmortization100.0100.0100.0

us-gaap:GainLossOnDispositionOfAssets1

us-gaap:GainLossOnDispositionOfAssets1


Gain
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-1.0-0.3-2.510-1.05.61.33.9-6.50.043-3.5-2.7-2.8-1.1
Percentage of GainLossOnDispositionOfAssets1100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0

us-gaap:GainLossOnDispositionOfAssets1 us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries


Gain
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-09-302018-06-302018-03-31
Value0.00.1-0.10.10.0-0.1-0.10.0-0.1
Percentage of GainLossOnDispositionOfAssets10.0-10.0-1.87.70.01.52.9-0.03.6

srt:NonGuarantorSubsidiaries


Gain
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value10-1.15.71.23.9-6.40.043-3.4-2.7-2.7-1.1
Percentage of GainLossOnDispositionOfAssets1100.0110.0101.892.3100.098.50.0100.097.1100.096.4100.0

us-gaap:GainLossOnSaleOfPropertyPlantEquipment

us-gaap:GainLossOnSaleOfPropertyPlantEquipment


Gain
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-1.0-0.2-2.67.7-0.75.30.93.8-6.32.343-2.1-1.6
Percentage of GainLossOnSaleOfPropertyPlantEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GoodwillImpairmentLoss

us-gaap:GoodwillImpairmentLoss


Goodwill
Period End2020-09-30
Value1333
Percentage of GoodwillImpairmentLoss100.0

us-gaap:GoodwillImpairmentLoss us-gaap:FairValueByAssetClass

us-gaap:Goodwill


Goodwill
Period End2020-09-30
Value1333
Percentage of GoodwillImpairmentLoss100.0

us-gaap:GoodwillImpairmentLossNetOfTax us-gaap:FairValueByAssetClass

us-gaap:GoodwillImpairmentLossNetOfTax

us-gaap:Goodwill


Goodwill
Period End2020-09-30
Value1314
Percentage of GoodwillImpairmentLossNetOfTax100.0

us-gaap:IncomeLossFromEquityMethodInvestments

us-gaap:IncomeLossFromEquityMethodInvestments


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value109.79.07.10.04.93.81.81.7-0.26.82.315113.8
Percentage of IncomeLossFromEquityMethodInvestments100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeLossFromEquityMethodInvestments us-gaap:ConsolidatedEntities

srt:NonGuarantorSubsidiaries


Income
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value7.10.04.93.81.81.7-0.26.82.310111.3
Percentage of IncomeLossFromEquityMethodInvestments100.00.0100.0100.0100.0100.0100.0100.0100.067.7100.034.2

us-gaap:IncreaseDecreaseInAccruedLiabilities

us-gaap:IncreaseDecreaseInAccruedLiabilities


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value1787011670129-65.9-35.5-61.2127-32.8-87.5-8.7116-8.9-78.3
Percentage of IncreaseDecreaseInAccruedLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInContractWithCustomerAsset

us-gaap:IncreaseDecreaseInContractWithCustomerAsset


Increase
Period End2021-06-302021-03-312020-12-312019-09-302019-06-302019-03-312018-12-31
Value2.8-2.17.4-5.9-0.15.4-8.1
Percentage of IncreaseDecreaseInContractWithCustomerAsset100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInContractWithCustomerLiability

us-gaap:IncreaseDecreaseInContractWithCustomerLiability


Increase
Period End2021-06-302021-03-312020-12-31
Value0.8-0.510
Percentage of IncreaseDecreaseInContractWithCustomerLiability100.0100.0100.0

us-gaap:IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable

us-gaap:IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value172.150-43.3-2.020-2.836-2.5-15.5-11.547-10.9-24.1118
Percentage of IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInOtherOperatingAssets


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value2310719104-34.66171-47.14211117-97.36359-3.4
Percentage of IncreaseDecreaseInOtherOperatingAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LeaseCost

us-gaap:LeaseCost


Lease
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value81798079788179
Percentage of LeaseCost100.0100.0100.0100.0100.0100.0100.0

us-gaap:NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent

us-gaap:NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-31500000.0-35000000.0-34900000.0-24900000.0-25600000.0-26100000.0-26700000.0-19300000.0-18900000.0-18700000.0-17300000.0-24800000.0-21300000.0-24600000.0-24600000.0
Percentage of NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeaseCost

us-gaap:OperatingLeaseCost


Operating
Period End2020-09-302020-06-302020-03-31
Value515050
Percentage of OperatingLeaseCost100.0100.0100.0

us-gaap:OtherAssetImpairmentCharges

us-gaap:OtherAssetImpairmentCharges


Other
Period End2021-06-302020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0.1230.00.02.2270.57.22.81.61.54.06.4
Percentage of OtherAssetImpairmentCharges100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value143-87.21965021-387.5100-129.12525-64.9-9.1-237.654-41.9
Percentage of OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax

us-gaap:Parent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value-1600000.0-1300000.0-1500000.0-1700000.0-1300000.0-1300000.0-700000.0-700000.0-500000.0-600000.0-600000.0600000.0-300000.00
Percentage of OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax

us-gaap:OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value1300000.01000000.01100000.01300000.01000000.01000000.0500000.0500000.0400000.0400000.0500000.00200000.00
Percentage of OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0

us-gaap:OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax us-gaap:StatementEquityComponents

us-gaap:Parent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value-1300000.0-1000000.0-1100000.0-1200000.0-1000000.0-1000000.0-500000.0-500000.0-400000.0-400000.0-500000.0400000.0-200000.00
Percentage of OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax-100.0-100.0-100.0-92.3-100.0-100.0-100.0-100.0-100.0-100.0-100.00.0-100.00.0

us-gaap:OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax

us-gaap:Parent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value-300000.0-300000.0-400000.0-500000.0-300000.0-300000.0-200000.0-200000.0-100000.0-200000.0-100000.0200000.0-100000.00
Percentage of OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value143-87.11965520-395.999-378.62525-64.9-24.6-237.754-44.0
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value0.00.0-0.10.2-0.7-8.9-0.5
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax0.0-0.0-0.10.4-3.42.2-0.5

us-gaap:AccumulatedTranslationAdjustment


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value143-87.11965021-387.0100-129.02525-64.9-9.1-237.454-42.0
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax100.0100.0100.190.5103.497.8100.534.1100.0100.0100.037.099.9100.095.5

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value153-79.02046731-384.1107-373.83029-59.5-21.0-232.655-40.3
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value8.56.76.6159.89.49.1-245.74.83.45.4-11.94.83.20.5
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent5.5-8.53.222.831.0-2.48.465.715.911.6-9.156.7-2.15.7-1.2

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value1.51.41.41.60.4000000000000009-6.500000000000001-1.8
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent1.0-1.80.72.41.31.7-1.7

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value153-79.02046731-384.1107-373.83029-59.5-21.0-232.655-40.3
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedTranslationAdjustment


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value143-87.11965021-387.0100-129.02525-64.9-9.1-237.454-42.0
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent93.5110.396.174.867.7100.893.234.584.188.4109.143.3102.196.8104.2

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax us-gaap:DerivativeInstrumentRisk, us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax

us-gaap:InterestRateContract, us-gaap:Parent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value2100000.01900000.02000000.01900000.01400000.0-300000.0-700000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax100.0100.0100.0100.0100.0100.0100.0

wrk:NaturalGasCommodityHedge, us-gaap:Parent


Other
Period End2020-09-302020-06-302020-03-312019-12-31
Value003700000.0-1100000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax0.00.0-1233.3157.1

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:StatementEquityComponents

us-gaap:CashFlowHedging, us-gaap:Parent


Other
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-31
Value2100000.01900000.02000000.01400000.03400000.0-1800000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax100.0100.0100.0100.0-1133.3257.1

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-1500000.0-1400000.0-1500000.0-1400000.0-1000000.0-2500000.01300000.00000-500000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax100.0100.0100.0100.0100.0100.0100.00.00.00.00.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax us-gaap:DerivativeInstrumentRisk, us-gaap:StatementEquityComponents

us-gaap:InterestRateContract, us-gaap:Parent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value1500000.01400000.01500000.01400000.01100000.0-300000.0-500000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax-100.0-100.0-100.0-100.0-110.012.0-38.5

wrk:NaturalGasCommodityHedge, us-gaap:Parent


Other
Period End2020-09-302020-06-302020-03-312019-12-31
Value002700000.0-800000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax-0.0-0.0-108.0-61.5

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:StatementEquityComponents

us-gaap:CashFlowHedging, us-gaap:Parent


Other
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-31
Value1500000.01400000.01500000.01100000.02400000.0-1300000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax-100.0-100.0-100.0-110.0-96.0-100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax us-gaap:DerivativeInstrumentRisk, us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax

us-gaap:InterestRateContract, us-gaap:Parent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value600000.0500000.0500000.0500000.0300000.0-400000.0200000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax100.0100.0100.0100.0100.0100.0100.0

wrk:NaturalGasCommodityHedge, us-gaap:Parent


Other
Period End2020-09-302020-06-302020-03-312019-12-31
Value001000000.0300000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax0.00.0-250.0150.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:StatementEquityComponents

us-gaap:CashFlowHedging, us-gaap:Parent


Other
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-31
Value600000.0500000.0500000.0300000.01000000.0500000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax100.0100.0100.0100.0-250.0250.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax

us-gaap:Parent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-10.9-8.7-8.9-14.9-12.7-12.8-12.3-6.8-6.4-4.7-7.237-7.1-4.5-4.4
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax

us-gaap:Parent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value9.37.47.4131111116.15.94.16.6-36.66.84.54.4
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-7.4-5.8-5.6-9.2-9.0-8.5-8.7-4.6-4.5-3.2-4.9-3.2-5.2-3.3-3.3
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax us-gaap:StatementEquityComponents

us-gaap:Parent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value7.25.75.59.18.88.48.64.54.43.04.9-26.44.93.33.2
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax-97.3-98.3-98.2-98.9-97.8-98.8-98.9-97.8-97.8-93.8-100.0825.0-94.2-100.0-97.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax

us-gaap:Parent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value2.11.71.94.12.63.13.0-10.21.51.11.71.61.91.21.2
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax

us-gaap:Parent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-8.5-6.7-6.6-10.3-9.8-9.464-5.0-4.8-3.4-5.426-5.1-3.3-3.2
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax

us-gaap:Parent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-2400000.0-2000000.0-2300000.0-4600000.0-2900000.0-3400000.0-76600000.0-1800000.0-1600000.0-1300000.0-1800000.010400000.0-2000000.0-1200000.0-1200000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-312017-12-31
Value00-100000.0100000.0-700000.0-8900000.0-500000.00-100000.0
Percentage of OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax0.00.0100.0100.0100.0100.0100.00.0100.0

us-gaap:OtherOperatingActivitiesCashFlowStatement

us-gaap:OtherOperatingActivitiesCashFlowStatement


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-20800000.0-21600000.0-31500000.0-5900000.0-22100000.01900000.0-13200000.0-18700000.0-15200000.0-28000000.0-18300000.0-38300000.0-31600000.07400000.0-23000000.0
Percentage of OtherOperatingActivitiesCashFlowStatement100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherRestructuringCosts

us-gaap:OtherRestructuringCosts


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0.62.41.0111.91.10.91.70.12.60.54.80.12.51.0
Percentage of OtherRestructuringCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic

us-gaap:ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic


Participating
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312018-12-312017-12-31
Value0100000.000100000.00200000.0
Percentage of ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic0.0100.00.00.0100.00.0100.0

us-gaap:ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDiluted

us-gaap:ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDiluted


Participating
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312018-12-312017-12-31
Value0100000.000100000.00200000.0
Percentage of ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDiluted0.0100.00.00.0100.00.0100.0

us-gaap:PaymentsForProceedsFromOtherInvestingActivities

us-gaap:PaymentsForProceedsFromOtherInvestingActivities


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-9.7-11.2-5.1-5.499999999999998-6.00.0-4.9-0.3-19.8-6.1-4.114-38.1-7.6-0.6
Percentage of PaymentsForProceedsFromOtherInvestingActivities100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForProceedsFromOtherInvestingActivities us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries


Payments
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-4.8-5.00.0-4.9-2.0-19.6-4.8-3.813-25.7-6.0-0.6
Percentage of PaymentsForProceedsFromOtherInvestingActivities87.383.30.0100.0666.799.078.792.795.167.578.9100.0

srt:NonGuarantorSubsidiaries


Payments
Period End2020-09-302019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-0.71.7-0.2-1.3-0.3-13.6-12.4
Percentage of PaymentsForProceedsFromOtherInvestingActivities12.7-566.71.021.37.3-94.432.5

us-gaap:PaymentsOfDividendsMinorityInterest

us-gaap:PaymentsOfDividendsMinorityInterest


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0.70.30.41.00.70.40.30.90.60.62.26.7187.11.5
Percentage of PaymentsOfDividendsMinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsOfDividendsMinorityInterest us-gaap:ConsolidatedEntities

srt:NonGuarantorSubsidiaries


Payments
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value1.00.70.40.30.90.60.62.26.7187.11.5
Percentage of PaymentsOfDividendsMinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireInterestInSubsidiariesAndAffiliates

us-gaap:PaymentsToAcquireInterestInSubsidiariesAndAffiliates


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-09-302018-06-302018-03-312017-12-31
Value0.00.00.10.30.30.40.30.8103.20.10.3110
Percentage of PaymentsToAcquireInterestInSubsidiariesAndAffiliates0.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireInterestInSubsidiariesAndAffiliates us-gaap:ConsolidatedEntities

srt:NonGuarantorSubsidiaries


Payments
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-09-302018-06-302018-03-312017-12-31
Value0.30.30.40.30.8103.20.10.3110
Percentage of PaymentsToAcquireInterestInSubsidiariesAndAffiliates100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionAndOtherPostretirementBenefitExpense

us-gaap:PensionAndOtherPostretirementBenefitExpense


Pension
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-24900000.0-25600000.0-26100000.0-26700000.0-19300000.0-18900000.0-18700000.0-17300000.0-24800000.0-21300000.0-24600000.0-24600000.0
Percentage of PensionAndOtherPostretirementBenefitExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionAndOtherPostretirementBenefitExpense us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries


Pension
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value1700000.01400000.01900000.01900000.01700000.01400000.01700000.01700000.06600000.00200000.0100000.0
Percentage of PensionAndOtherPostretirementBenefitExpense-6.8-5.5-7.3-7.1-8.8-7.4-9.1-9.8-26.6-0.0-0.8-0.4

srt:NonGuarantorSubsidiaries


Pension
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-26600000.0-27000000.0-28000000.0-28600000.0-21000000.0-20300000.0-20400000.0-19000000.0-31400000.0-21300000.0-24800000.0-24700000.0
Percentage of PensionAndOtherPostretirementBenefitExpense106.8105.5107.3107.1108.8107.4109.1109.8126.6100.0100.8100.4

us-gaap:ProceedsFromInsuranceSettlementInvestingActivities

us-gaap:ProceedsFromInsuranceSettlementInvestingActivities


Proceeds
Period End2021-06-302020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-09-302018-06-302018-03-312017-12-31
Value0.04.11.00.01.49.07.71.71.43.31.5
Percentage of ProceedsFromInsuranceSettlementInvestingActivities0.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromInsuranceSettlementInvestingActivities us-gaap:ConsolidatedEntities

srt:NonGuarantorSubsidiaries


Proceeds
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-09-302018-06-302018-03-312017-12-31
Value1.31.00.01.49.07.71.71.43.31.5
Percentage of ProceedsFromInsuranceSettlementInvestingActivities31.7100.00.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromInsuranceSettlementInvestingActivities us-gaap:LiabilityForCatastropheClaimsByCatastrophicEvent, us-gaap:StatementBusinessSegments

us-gaap:Hurricane, wrk:CorrugatedPackaging


Proceeds
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value0.00.00.01.49.07.7
Percentage of ProceedsFromInsuranceSettlementInvestingActivities0.00.00.0100.0100.0100.0

us-gaap:ProceedsFromInsuranceSettlementOperatingActivities us-gaap:LiabilityForCatastropheClaimsByCatastrophicEvent, us-gaap:StatementBusinessSegments

us-gaap:ProceedsFromInsuranceSettlementOperatingActivities

us-gaap:Hurricane, wrk:CorrugatedPackaging


Proceeds
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value0.00.00.0306122
Percentage of ProceedsFromInsuranceSettlementOperatingActivities0.00.00.0100.0100.0100.0

us-gaap:ProceedsFromIssuanceOfDebt

us-gaap:ProceedsFromIssuanceOfDebt


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value2.9000000000000297244101310347810162048315138061.10.9377475
Percentage of ProceedsFromIssuanceOfDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromIssuanceOfDebt us-gaap:ConsolidatedEntities

srt:NonGuarantorSubsidiaries


Proceeds
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value131034781016191841505.31.10.9375475
Percentage of ProceedsFromIssuanceOfDebt100.0100.0100.0100.099.838.199.30.1100.0100.099.3100.0

us-gaap:ProceedsFromLinesOfCredit

us-gaap:ProceedsFromLinesOfCredit


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-09-302019-06-30
Value402151801538300.0
Percentage of ProceedsFromLinesOfCredit100.0100.0100.0100.0100.0100.00.0

us-gaap:ProceedsFromLinesOfCredit us-gaap:ConsolidatedEntities

srt:NonGuarantorSubsidiaries


Proceeds
Period End2020-09-302020-06-302019-09-302019-06-30
Value1538300.0
Percentage of ProceedsFromLinesOfCredit100.0100.0100.00.0

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-4.213-16.6-5.5-19.110-8.515-10.19.4-6.41.730-25.60.7
Percentage of ProceedsFromPaymentsForOtherFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities us-gaap:ConsolidatedEntities

srt:NonGuarantorSubsidiaries


Proceeds
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-5.3-13.910-8.515-1.89.8121.630-1.60.7
Percentage of ProceedsFromPaymentsForOtherFinancingActivities96.472.8100.0100.0100.717.8104.3-198.494.1100.06.2100.0

srt:SubsidiaryIssuer


Proceeds
Period End2020-09-302019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-0.2-0.1-8.3-0.4-19.10.10.0
Percentage of ProceedsFromPaymentsForOtherFinancingActivities3.6-0.782.2-4.3298.45.90.0

us-gaap:ProceedsFromRepaymentsOfCommercialPaper

us-gaap:ProceedsFromRepaymentsOfCommercialPaper


Proceeds
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-03-312017-12-31
Value-329.925-45.710-106.4-142.7140447-491.4554
Percentage of ProceedsFromRepaymentsOfCommercialPaper100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromRepaymentsOfCommercialPaper us-gaap:ConsolidatedEntities

srt:SubsidiaryIssuer


Proceeds
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-03-312017-12-31
Value-329.925-45.710-106.4-142.7140447-491.4554
Percentage of ProceedsFromRepaymentsOfCommercialPaper100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromRepaymentsOfOtherDebt

us-gaap:ProceedsFromRepaymentsOfOtherDebt


Proceeds
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value21-11.1-155.1122-36.36.329
Percentage of ProceedsFromRepaymentsOfOtherDebt100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromRepaymentsOfOtherDebt us-gaap:ConsolidatedEntities

srt:NonGuarantorSubsidiaries


Proceeds
Period End2020-09-302020-06-302019-09-302019-06-30
Value-11.1-30.1-4.4-5.8
Percentage of ProceedsFromRepaymentsOfOtherDebt100.019.4-69.8-19.7

srt:SubsidiaryIssuer


Proceeds
Period End2020-09-302020-06-302019-09-30
Value0.0-125.010
Percentage of ProceedsFromRepaymentsOfOtherDebt-0.080.6169.8

us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment

us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value1.21.12.0121.2137.9103.017880.96.73.612
Percentage of ProceedsFromSaleOfPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries


Proceeds
Period End2020-09-302020-06-302020-03-312019-12-31
Value0.00.00.00.1
Percentage of ProceedsFromSaleOfPropertyPlantAndEquipment0.00.00.01.3

srt:NonGuarantorSubsidiaries


Proceeds
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value121.2137.8103.017880.96.73.612
Percentage of ProceedsFromSaleOfPropertyPlantAndEquipment100.0100.0100.098.7100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax


Reclassification
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-10000000.0-8100000.0-8100000.0-11700000.0-10900000.0-11800000.0-7800000.0-4800000.0-4800000.0-3400000.0-5400000.0-3600000.0-5100000.0-1800000.0-3700000.0
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Reclassification
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-8500000.0-6700000.0-6600000.0-10300000.0-9800000.0-9400000.0-9100000.0-5000000.0-4800000.0-3400000.0-5400000.0-3600000.0-5100000.0-3300000.0-3200000.0
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax85.082.781.588.089.979.7116.7104.2100.0100.0100.0100.0100.0183.386.5

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Reclassification
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value-1500000.0-1400000.0-1500000.0-1400000.0-1100000.0-2400000.01300000.0
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax15.017.318.512.010.120.3-16.7

us-gaap:ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent us-gaap:StatementEquityComponents

us-gaap:ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent

us-gaap:Parent


Reclassification
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value131010161416106.56.44.77.2
Percentage of ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent us-gaap:StatementEquityComponents

us-gaap:ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent

us-gaap:Parent


Reclassification
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value10.08.18.111101165-32.04.83.4-5.4
Percentage of ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ReclassificationFromAociCurrentPeriodTax us-gaap:StatementEquityComponents

us-gaap:ReclassificationFromAociCurrentPeriodTax

us-gaap:Parent


Reclassification
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value3.02.52.85.13.24.4761.71.61.31.8
Percentage of ReclassificationFromAociCurrentPeriodTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RepaymentsOfDebt

us-gaap:RepaymentsOfDebt


Repayments
Period End2020-12-312019-12-312018-12-312017-12-31
Value7044.028471050
Percentage of RepaymentsOfDebt100.0100.0100.0100.0

us-gaap:RepaymentsOfLinesOfCredit

us-gaap:RepaymentsOfLinesOfCredit


Repayments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value8026510.050413452050157
Percentage of RepaymentsOfLinesOfCredit100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RepaymentsOfLinesOfCredit us-gaap:ConsolidatedEntities

srt:NonGuarantorSubsidiaries


Repayments
Period End2020-09-302020-06-302019-09-302019-06-30
Value50635090
Percentage of RepaymentsOfLinesOfCredit100.015.3100.057.3

us-gaap:RepaymentsOfUnsecuredDebt us-gaap:DebtInstrument, us-gaap:ExtinguishmentOfDebt

us-gaap:RepaymentsOfUnsecuredDebt

wrk:BankOfAmericaFiveYearTermLoan, wrk:TerminatedUnsecuredTermLoanFacility


Repayments
Period End2021-05-312020-12-31
Value25050
Percentage of RepaymentsOfUnsecuredDebt100.0100.0

us-gaap:RestructuringAndRelatedCostIncurredCost

us-gaap:RestructuringAndRelatedCostIncurredCost


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value7.04.16.6537.48.024546.424257.06.9214.4
Percentage of RestructuringAndRelatedCostIncurredCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestructuringAndRelatedCostIncurredCost us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0.40.71.7120.71.97.7152.57.814-0.20.84.30.7
Percentage of RestructuringAndRelatedCostIncurredCost5.717.125.823.19.523.831.228.639.132.154.9-2.911.620.315.9

us-gaap:RestructuringAndRelatedCostIncurredCost us-gaap:ConsolidationItems, us-gaap:RestructuringCostAndReserve

us-gaap:CorporateNonSegment, us-gaap:EmployeeSeverance


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0.0-0.71.6120.11.27.7152.45.614-0.20.9-0.10.2
Percentage of RestructuringAndRelatedCostIncurredCost0.0-17.124.222.61.415.031.228.037.523.055.3-2.913.0-0.54.5

us-gaap:CorporateNonSegment, wrk:OtherCostsRelatedToRestructuringAndOtherCosts


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0.41.40.10.30.60.70.30.12.2-0.10.0-0.14.40.5
Percentage of RestructuringAndRelatedCostIncurredCost5.734.11.50.68.18.80.51.69.1-0.40.0-1.420.811.4

us-gaap:RestructuringAndRelatedCostIncurredCost us-gaap:RestructuringCostAndReserve

us-gaap:EmployeeSeverance


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value4.51.34.4185.25.120215.212200.92.56.7-0.2
Percentage of RestructuringAndRelatedCostIncurredCost64.331.766.735.170.363.883.040.181.252.780.212.936.231.6-4.5

wrk:EquipmentAndInventoryRelocationCosts


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value1.10.00.22.00.20.90.51.91.81.40.70.60.62.71.9
Percentage of RestructuringAndRelatedCostIncurredCost15.70.03.03.72.711.22.03.528.15.82.78.68.712.743.2

wrk:FacilityCarryingCosts


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0.80.20.81.20.40.40.61.30.81.10.90.90.91.21.2
Percentage of RestructuringAndRelatedCostIncurredCost11.44.912.12.25.45.02.42.412.54.53.512.913.05.727.3

wrk:NetPropertyPlantAndEquipment


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0.00.00.223-0.30.32.727-1.73.83.12.22.23.71.6
Percentage of RestructuringAndRelatedCostIncurredCost0.00.03.042.9-4.13.810.950.2-26.615.612.131.431.917.536.4

wrk:OtherCostsRelatedToRestructuringAndOtherCosts


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0.62.61.08.61.91.30.42.10.35.20.42.40.76.9-0.1
Percentage of RestructuringAndRelatedCostIncurredCost8.663.415.216.025.716.21.63.84.721.41.634.310.132.5-2.3

us-gaap:RestructuringAndRelatedCostIncurredCost us-gaap:RestructuringCostAndReserve, us-gaap:StatementBusinessSegments

us-gaap:EmployeeSeverance, wrk:ConsumerPackaging


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value4.22.43.54.81.97.45.72.01.22.9-0.12.11.75.3-1.9
Percentage of RestructuringAndRelatedCostIncurredCost60.058.553.09.025.792.523.13.718.811.9-0.430.024.625.0-43.2

us-gaap:EmployeeSeverance, wrk:CorrugatedPackaging


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0.3-0.4-0.71.93.2-3.57.14.61.64.16.6-0.6-0.21.31.1
Percentage of RestructuringAndRelatedCostIncurredCost4.3-9.8-10.63.543.2-43.828.78.425.016.925.7-8.6-2.96.125.0

wrk:EquipmentAndInventoryRelocationCosts, wrk:ConsumerPackaging


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0.40.00.21.30.00.00.10.10.20.40.30.90.31.10.4
Percentage of RestructuringAndRelatedCostIncurredCost5.70.03.02.40.00.00.40.23.11.61.212.94.35.29.1

wrk:EquipmentAndInventoryRelocationCosts, wrk:CorrugatedPackaging


Restructuring
Period End2021-06-302020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0.70.70.20.90.41.81.61.00.4-0.30.31.61.5
Percentage of RestructuringAndRelatedCostIncurredCost10.01.32.711.21.63.325.04.11.6-4.34.37.534.1

wrk:FacilityCarryingCosts, wrk:ConsumerPackaging


Restructuring
Period End2021-06-302019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0.50.00.20.2-0.20.30.10.20.4
Percentage of RestructuringAndRelatedCostIncurredCost7.10.03.10.8-0.84.31.40.99.1

wrk:FacilityCarryingCosts, wrk:CorrugatedPackaging


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0.30.20.81.20.40.40.61.30.60.91.10.60.81.00.8
Percentage of RestructuringAndRelatedCostIncurredCost4.34.912.12.25.45.02.42.49.43.74.38.611.64.718.2

wrk:NetPropertyPlantAndEquipment, wrk:ConsumerPackaging


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-06-302019-03-312018-09-302018-06-302018-03-312017-12-31
Value0.00.00.2230.00.00.50.2-0.20.71.83.41.0
Percentage of RestructuringAndRelatedCostIncurredCost0.00.03.042.90.00.02.03.1-0.810.026.116.022.7

wrk:NetPropertyPlantAndEquipment, wrk:CorrugatedPackaging


Restructuring
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0.0-0.30.32.226-1.94.03.11.50.40.30.6
Percentage of RestructuringAndRelatedCostIncurredCost0.0-4.13.88.949.3-29.716.512.121.45.81.413.6

wrk:OtherCostsRelatedToRestructuringAndOtherCosts, wrk:ConsumerPackaging


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0.30.80.88.71.20.40.20.80.32.70.5-0.60.72.4-0.3
Percentage of RestructuringAndRelatedCostIncurredCost4.319.512.116.216.25.00.81.54.711.11.9-8.610.111.3-6.8

wrk:OtherCostsRelatedToRestructuringAndOtherCosts, wrk:CorrugatedPackaging


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-12-31
Value-0.10.40.1-2.40.10.20.21.0-0.10.30.00.10.1-0.3
Percentage of RestructuringAndRelatedCostIncurredCost-1.49.81.5-4.51.42.50.81.8-1.61.20.01.40.5-6.8

us-gaap:RestructuringAndRelatedCostIncurredCost us-gaap:StatementBusinessSegments

wrk:ConsumerPackaging


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value5.43.24.7373.17.86.53.42.16.00.53.44.612-0.4
Percentage of RestructuringAndRelatedCostIncurredCost77.178.071.270.541.997.526.36.232.824.71.948.666.758.5-9.1

wrk:CorrugatedPackaging


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value1.20.20.21.43.6-1.710351.810111.21.44.33.7
Percentage of RestructuringAndRelatedCostIncurredCost17.14.93.02.648.6-21.242.565.228.142.443.617.120.320.384.1

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability


Right
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value39306736292631
Percentage of RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability100.0100.0100.0100.0100.0100.0100.0

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage us-gaap:AwardType, us-gaap:SubsequentEventType

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage

wrk:RestrictedStockTargetAwards, us-gaap:SubsequentEvent


Sharebased
Period End2020-10-31
Value105.0
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage100.0

us-gaap:StockIssuedDuringPeriodSharesRestrictedStockAwardGross us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodSharesRestrictedStockAwardGross

us-gaap:CommonStock


Stock
Period End2020-12-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value2300000.00100000.0800000.0200000.002700000.000700000.0
Percentage of StockIssuedDuringPeriodSharesRestrictedStockAwardGross100.00.0100.0100.0100.00.0100.00.00.0100.0

us-gaap:SubleaseIncome

us-gaap:SubleaseIncome


Sublease
Period End2020-09-302020-06-302020-03-31
Value1700000.01500000.01800000.0
Percentage of SubleaseIncome100.0100.0100.0

us-gaap:TaxCutsAndJobsActOf2017ReclassificationFromAociToRetainedEarningsTaxEffect us-gaap:AdjustmentsForNewAccountingPronouncements, us-gaap:StatementEquityComponents

us-gaap:TaxCutsAndJobsActOf2017ReclassificationFromAociToRetainedEarningsTaxEffect

us-gaap:AccountingStandardsUpdate201802, us-gaap:Parent


Tax
Period End2020-09-302020-06-302020-03-312019-12-31
Value000-73400000.0
Percentage of TaxCutsAndJobsActOf2017ReclassificationFromAociToRetainedEarningsTaxEffect0.00.00.0100.0

us-gaap:UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense us-gaap:IncomeTaxAuthorityName

us-gaap:UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense

wrk:BrazilAdministrativeCouncilOfTaxAppeals


Unrecognized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value2.02.06942.06.03.0682
Percentage of UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense100.0100.0100.0100.0100.0100.0100.0

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment


Weighted
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312018-06-302018-03-312017-12-31
Value2500000.02100000.02100000.01000000.01200000.01700000.01300000.02800000.04700000.04500000.04200000.04200000.0
Percentage of WeightedAverageNumberDilutedSharesOutstandingAdjustment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wrk:AdditionalAccrualsAndAdjustmentsToAccruals

wrk:AdditionalAccrualsAndAdjustmentsToAccruals


Additional
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value4.21.54.3145.05.320224.814144.02.111-1.7
Percentage of AdditionalAccrualsAndAdjustmentsToAccruals100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wrk:BasicLossPerShareDueToGoodwillImpairment us-gaap:FairValueByAssetClass

wrk:BasicLossPerShareDueToGoodwillImpairment

us-gaap:Goodwill


Basic
Period End2020-09-30
Value-5.06
Percentage of BasicLossPerShareDueToGoodwillImpairment100.0

wrk:CapacityRemovedDueToShutDownOfPaperMachines us-gaap:ProductOrService, us-gaap:SubsequentEventType

wrk:CapacityRemovedDueToShutDownOfPaperMachines

wrk:SBSEndMarket, us-gaap:SubsequentEvent


Capacity
Period End2020-10-31
Value200000.0
Percentage of CapacityRemovedDueToShutDownOfPaperMachines100.0

wrk:ChargeOnNotExercisingOptionToPurchaseAdditionalEquityInterestInJointVenture us-gaap:BusinessAcquisition

wrk:ChargeOnNotExercisingOptionToPurchaseAdditionalEquityInterestInJointVenture

wrk:GrupoGondiInvestment


Charge
Period End2021-06-302021-03-31
Value0.022
Percentage of ChargeOnNotExercisingOptionToPurchaseAdditionalEquityInterestInJointVenture0.0100.0

wrk:CostOfRealEstateSold

wrk:CostOfRealEstateSold


Cost
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value1.862645149230957e-150.00.0160.06.30.0113756197.6
Percentage of CostOfRealEstateSold100.00.00.0100.00.0100.00.0100.0100.0100.0100.0100.0

wrk:DefinedBenefitPlanNetPeriodicBenefitCostCompany us-gaap:RetirementPlanType

wrk:DefinedBenefitPlanNetPeriodicBenefitCostCompany

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-21.4-22.0-21.9-12.5-15.2-12.8-14.5-9.7-9.2-8.2-7.2-14.1-13.2-13.0-13.9
Percentage of DefinedBenefitPlanNetPeriodicBenefitCostCompany100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wrk:DilutedLossPerShareDueToGoodwillImpairment us-gaap:FairValueByAssetClass

wrk:DilutedLossPerShareDueToGoodwillImpairment

us-gaap:Goodwill


Diluted
Period End2020-09-30
Value-5.06
Percentage of DilutedLossPerShareDueToGoodwillImpairment100.0

wrk:DivestitureRelatedCostsCredits

wrk:DivestitureRelatedCostsCredits


Divestiture
Period End2021-06-302019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value400000.000100000.0100000.0100000.00-100000.0300000.0
Percentage of DivestitureRelatedCostsCredits100.00.00.0100.0100.0100.00.0100.0100.0

wrk:DivestitureRelatedCostsCredits us-gaap:StatementBusinessSegments

us-gaap:AllOtherSegments


Divestiture
Period End2021-06-302021-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value400000.0200000.000100000.0100000.0100000.00-100000.0300000.0
Percentage of DivestitureRelatedCostsCredits100.00.00.00.0100.0100.0100.00.0100.0100.0

wrk:EquityInIncomeLossOfConsolidatedEntities us-gaap:ConsolidatedEntities

wrk:EquityInIncomeLossOfConsolidatedEntities

srt:ConsolidationEliminations


Equity
Period End2020-09-302020-06-302019-09-302019-06-30
Value2467-647.0-1130.5-518.1
Percentage of EquityInIncomeLossOfConsolidatedEntities100.0100.0100.0100.0

srt:GuarantorSubsidiaries


Equity
Period End2020-09-302020-06-302019-09-302019-06-30
Value-216.6195333-11.4
Percentage of EquityInIncomeLossOfConsolidatedEntities-8.8-30.3-29.52.2

srt:ParentCompany


Equity
Period End2020-09-302020-06-302019-09-302019-06-30
Value-1156.0178310252
Percentage of EquityInIncomeLossOfConsolidatedEntities-46.9-27.6-27.5-48.8

srt:SubsidiaryIssuer


Equity
Period End2020-09-302020-06-302019-09-302019-06-30
Value-1094.8272486276
Percentage of EquityInIncomeLossOfConsolidatedEntities-44.4-42.1-43.0-53.4

wrk:EstimatedLossOnSaleOfAccountsReceivableByQuarter

wrk:EstimatedLossOnSaleOfAccountsReceivableByQuarter


Estimated
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-31
Value2.82.73.02.24.14.3
Percentage of EstimatedLossOnSaleOfAccountsReceivableByQuarter100.0100.0100.0100.0100.0100.0

wrk:FourZeroOneKMatchAndContributionInCommonStock

wrk:FourZeroOneKMatchAndContributionInCommonStock


Four
Period End2021-06-30
Value23
Percentage of FourZeroOneKMatchAndContributionInCommonStock100.0

wrk:FourZeroOneKMatchInCommonStock

wrk:FourZeroOneKMatchInCommonStock


Four
Period End2020-12-31
Value24
Percentage of FourZeroOneKMatchInCommonStock100.0

wrk:GainLossOnSaleOfSawmill

wrk:GainLossOnSaleOfSawmill


Gain
Period End2021-06-30
Value0.0
Percentage of GainLossOnSaleOfSawmill0.0

wrk:GainOnSaleOfCertainClosedFacilities

wrk:GainOnSaleOfCertainClosedFacilities


Gain
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-31
Value0.00.00.9100.05.00.50.050
Percentage of GainOnSaleOfCertainClosedFacilities0.00.0100.0100.00.0100.0100.00.0100.0

wrk:ImpactOfLostSalesAndOperationalDisruption

wrk:ImpactOfLostSalesAndOperationalDisruption


Impact
Period End2021-03-31
Value50
Percentage of ImpactOfLostSalesAndOperationalDisruption100.0

wrk:IncomeLossExcludingPortionAttributableToRedeemableNoncontrollingInterest us-gaap:StatementEquityComponents

wrk:IncomeLossExcludingPortionAttributableToRedeemableNoncontrollingInterest

us-gaap:RetainedEarnings


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value250112152-1156.01781481383102521601392792682231135
Percentage of IncomeLossExcludingPortionAttributableToRedeemableNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wrk:IncreaseDecreaseInAccountsReceivableFromTransfersNet

wrk:IncreaseDecreaseInAccountsReceivableFromTransfersNet


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value4068-36.26.3-12.517-8.5-68.6-25.3
Percentage of IncreaseDecreaseInAccountsReceivableFromTransfersNet100.0100.0100.0100.0100.0100.0100.0100.0100.0

wrk:IncreaseDecreaseToNonredeemableNoncontrollingInterestsFromDistributionsAndAdjustments us-gaap:StatementEquityComponents

wrk:IncreaseDecreaseToNonredeemableNoncontrollingInterestsFromDistributionsAndAdjustments

us-gaap:NoncontrollingInterest


Increase
Period End2021-06-30
Value1100000.0
Percentage of IncreaseDecreaseToNonredeemableNoncontrollingInterestsFromDistributionsAndAdjustments100.0

wrk:IndentureGoverningRedemptionAmount us-gaap:DebtInstrument, us-gaap:SubsequentEventType

wrk:IndentureGoverningRedemptionAmount

wrk:FourPointNinePercentageBondsDueMarchTwoThousandTwentyTwo, us-gaap:SubsequentEvent


Indenture
Period End2021-08-02
Value400
Percentage of IndentureGoverningRedemptionAmount100.0

wrk:IntercompanyCapitalDistributionNonCashFinancingActivities us-gaap:ConsolidatedEntities

wrk:IntercompanyCapitalDistributionNonCashFinancingActivities

srt:ConsolidationEliminations


Intercompany
Period End2020-09-302019-09-302019-06-302019-03-312018-12-312018-09-30
Value-121.7-11.3-151.70.0-2956.00.0
Percentage of IntercompanyCapitalDistributionNonCashFinancingActivities100.0100.0100.00.0100.00.0

srt:GuarantorSubsidiaries


Intercompany
Period End2020-09-302019-09-302019-06-302019-03-312018-12-312018-09-30
Value0.00.00.00.04570.0
Percentage of IntercompanyCapitalDistributionNonCashFinancingActivities-0.0-0.0-0.00.0-15.50.0

srt:NonGuarantorSubsidiaries


Intercompany
Period End2020-09-302019-09-302019-06-302019-03-312018-12-312018-09-30
Value121111080.013720.0
Percentage of IntercompanyCapitalDistributionNonCashFinancingActivities-100.0-100.0-71.20.0-46.40.0

srt:SubsidiaryIssuer


Intercompany
Period End2020-09-302019-09-302019-06-302019-03-312018-12-31
Value0.00.0430.0563
Percentage of IntercompanyCapitalDistributionNonCashFinancingActivities-0.0-0.0-28.80.0-19.0

wrk:IntercompanyCapitalInvestmentNonCashInvestingActivities us-gaap:ConsolidatedEntities

wrk:IntercompanyCapitalInvestmentNonCashInvestingActivities

srt:ConsolidationEliminations


Intercompany
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-72.4-1950.10.0-0.6-8.8-1357.6-91.3-21723.30.0
Percentage of IntercompanyCapitalInvestmentNonCashInvestingActivities100.0100.00.0100.0100.0100.0100.0100.00.0

srt:GuarantorSubsidiaries


Intercompany
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value729170.00.68.88969158920.0
Percentage of IntercompanyCapitalInvestmentNonCashInvestingActivities-100.0-47.00.0-100.0-100.0-66.1-100.0-27.10.0

srt:ParentCompany


Intercompany
Period End2020-09-302019-09-302019-06-302019-03-312018-12-31
Value0.00.00.00.010396
Percentage of IntercompanyCapitalInvestmentNonCashInvestingActivities-0.0-0.0-0.0-0.0-47.9

srt:SubsidiaryIssuer


Intercompany
Period End2020-09-302019-09-302019-06-302019-03-312018-12-312018-09-30
Value0.00.04600.054340.0
Percentage of IntercompanyCapitalInvestmentNonCashInvestingActivities-0.0-0.0-33.9-0.0-25.00.0

wrk:IntercompanyCapitalReceiptNonCashFinancingActivities us-gaap:ConsolidatedEntities

wrk:IntercompanyCapitalReceiptNonCashFinancingActivities

srt:ConsolidationEliminations


Intercompany
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-72.4-1950.10.0-0.6-8.8-1357.6-91.3-21723.30.0
Percentage of IntercompanyCapitalReceiptNonCashFinancingActivities100.0100.00.0100.0100.0100.0100.0100.00.0

srt:GuarantorSubsidiaries


Intercompany
Period End2020-09-302019-09-302019-06-302019-03-312018-12-312018-09-30
Value0.00.04360.049770.0
Percentage of IntercompanyCapitalReceiptNonCashFinancingActivities-0.0-0.0-32.1-0.0-22.90.0

srt:NonGuarantorSubsidiaries


Intercompany
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value7213240.00.68.89219163490.0
Percentage of IntercompanyCapitalReceiptNonCashFinancingActivities-100.0-67.90.0-100.0-100.0-67.9-100.0-29.20.0

wrk:IntercompanyDividendsPaidNonCashFinancingActivities us-gaap:ConsolidatedEntities

wrk:IntercompanyDividendsPaidNonCashFinancingActivities

srt:ConsolidationEliminations


Intercompany
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value149-1454.0-12.6-18.6-15.4-1149.40.0-572.40.0
Percentage of IntercompanyDividendsPaidNonCashFinancingActivities100.0100.0100.0100.0100.0100.00.0100.00.0

srt:NonGuarantorSubsidiaries


Intercompany
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-149.614051218158470.05720.0
Percentage of IntercompanyDividendsPaidNonCashFinancingActivities-100.0-96.7-100.0-100.0-100.0-73.70.0-100.00.0

wrk:IntercompanyInterestIncomeExpenseNet us-gaap:ConsolidatedEntities

wrk:IntercompanyInterestIncomeExpenseNet

srt:ConsolidationEliminations


Intercompany
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value7.67.88.28.09.19.9
Percentage of IntercompanyInterestIncomeExpenseNet100.0100.0100.0100.0100.0100.0

srt:GuarantorSubsidiaries


Intercompany
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-13.5-17.8-24.2-25.2-27.4-33.3-27.5-27.1-35.6-19.7-16.5-15.8
Percentage of IntercompanyInterestIncomeExpenseNet-177.6-228.2-295.1-315.0-301.1-336.40.00.00.00.00.00.0

srt:NonGuarantorSubsidiaries


Intercompany
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value7.81119202225272427111010
Percentage of IntercompanyInterestIncomeExpenseNet102.6147.4235.4258.8247.3261.60.00.00.00.00.00.0

srt:SubsidiaryIssuer


Intercompany
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-1.9-1.5-3.3-3.5-4.2-2.50.53.07.88.56.25.6
Percentage of IntercompanyInterestIncomeExpenseNet-25.0-19.2-40.2-43.8-46.2-25.30.00.00.00.00.00.0

wrk:IntercompanyNotesBorrowingNonCashFinancingActivities us-gaap:ConsolidatedEntities

wrk:IntercompanyNotesBorrowingNonCashFinancingActivities

srt:ConsolidationEliminations


Intercompany
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-20.7-151.5-26.8-2.3-2063.2-804.50.0-16377.30.0
Percentage of IntercompanyNotesBorrowingNonCashFinancingActivities100.0100.0100.0100.0100.0100.00.0100.00.0

srt:NonGuarantorSubsidiaries


Intercompany
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value2034262.30.81460.012119
Percentage of IntercompanyNotesBorrowingNonCashFinancingActivities-100.0-22.8-100.0-100.0-0.0-18.20.0-74.0

srt:SubsidiaryIssuer


Intercompany
Period End2020-09-302019-09-302019-06-302019-03-312018-12-31
Value0.00.06360.03800
Percentage of IntercompanyNotesBorrowingNonCashFinancingActivities-0.0-0.0-79.10.0-23.2

wrk:IntercompanyNotesIssuedNonCashInvestingActivities us-gaap:ConsolidatedEntities

wrk:IntercompanyNotesIssuedNonCashInvestingActivities

srt:ConsolidationEliminations


Intercompany
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-20.7-151.5-26.8-2.3-2063.2-804.50.0-16377.30.0
Percentage of IntercompanyNotesIssuedNonCashInvestingActivities100.0100.0100.0100.0100.0100.00.0100.00.0

srt:GuarantorSubsidiaries


Intercompany
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value6.834262.30.81460.04519
Percentage of IntercompanyNotesIssuedNonCashInvestingActivities-32.9-22.8-100.0-100.0-0.0-18.20.0-27.6

srt:NonGuarantorSubsidiaries


Intercompany
Period End2020-09-302019-09-302019-06-302019-03-312018-12-312018-09-30
Value0.020626570.080570.0
Percentage of IntercompanyNotesIssuedNonCashInvestingActivities-0.0-100.0-81.80.0-49.20.0

wrk:IntercompanyNotesPayments us-gaap:ConsolidatedEntities

wrk:IntercompanyNotesPayments

srt:ConsolidationEliminations


Intercompany
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-0.7-1.9-0.1-3.0-2.4-73.2-0.6-3809.9-0.682-85.1-1.1
Percentage of IntercompanyNotesPayments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:NonGuarantorSubsidiaries


Intercompany
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0.71.90.13.02.53.00.69.90.60.72.11.1
Percentage of IntercompanyNotesPayments-100.0-100.0-100.0-100.0-104.2-4.1-100.0-0.3-100.00.9-2.5-100.0

wrk:IntercompanyNotesPaymentsNonCashFinancingActivities us-gaap:ConsolidatedEntities

wrk:IntercompanyNotesPaymentsNonCashFinancingActivities

srt:ConsolidationEliminations


Intercompany
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-14.8-376.0-1.9-10.4-2079.4-502.10.0-13297.10.0
Percentage of IntercompanyNotesPaymentsNonCashFinancingActivities100.0100.0100.0100.0100.0100.00.0100.00.0

srt:GuarantorSubsidiaries


Intercompany
Period End2020-09-302019-09-302019-06-302019-03-312018-12-312018-09-30
Value0.020625020.04570.0
Percentage of IntercompanyNotesPaymentsNonCashFinancingActivities-0.0-99.2-100.00.0-3.40.0

srt:NonGuarantorSubsidiaries


Intercompany
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value14531.910170.00.012839
Percentage of IntercompanyNotesPaymentsNonCashFinancingActivities-100.0-14.2-100.0-100.0-0.8-0.00.0-96.6

wrk:IntercompanyNotesProceeds us-gaap:ConsolidatedEntities

wrk:IntercompanyNotesProceeds

srt:ConsolidationEliminations


Intercompany
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-0.7-1.9-0.1-3.0-2.4-73.2-0.6-3809.9-0.682-85.1-1.1
Percentage of IntercompanyNotesProceeds100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:GuarantorSubsidiaries


Intercompany
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0.71.90.13.02.43.00.70.60.60.72.11.1
Percentage of IntercompanyNotesProceeds-100.0-100.0-100.0-100.0-100.0-4.1-116.7-0.0-100.00.9-2.5-100.0

wrk:IntercompanyNotesProceedsNonCashInvestingActivities us-gaap:ConsolidatedEntities

wrk:IntercompanyNotesProceedsNonCashInvestingActivities

srt:ConsolidationEliminations


Intercompany
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-14.8-376.0-1.9-10.4-2079.4-502.10.0-13297.10.0
Percentage of IntercompanyNotesProceedsNonCashInvestingActivities100.0100.0100.0100.0100.0100.00.0100.00.0

srt:GuarantorSubsidiaries


Intercompany
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value14531.910170.00.04519
Percentage of IntercompanyNotesProceedsNonCashInvestingActivities-100.0-14.2-100.0-100.0-0.8-0.00.0-34.0

srt:NonGuarantorSubsidiaries


Intercompany
Period End2020-09-302019-09-302019-06-302019-03-312018-12-312018-09-30
Value0.020625020.042570.0
Percentage of IntercompanyNotesProceedsNonCashInvestingActivities-0.0-99.2-100.00.0-32.00.0

wrk:IntercompanyReturnOfCapitalNonCashInvestingActivities us-gaap:ConsolidatedEntities

wrk:IntercompanyReturnOfCapitalNonCashInvestingActivities

srt:ConsolidationEliminations


Intercompany
Period End2020-09-302019-09-302019-06-302019-03-312018-12-312018-09-30
Value-121.7-11.3-151.70.0-2956.00.0
Percentage of IntercompanyReturnOfCapitalNonCashInvestingActivities100.0100.0100.00.0100.00.0

srt:GuarantorSubsidiaries


Intercompany
Period End2020-09-302019-09-302019-06-302019-03-312018-12-312018-09-30
Value107111060.09150.0
Percentage of IntercompanyReturnOfCapitalNonCashInvestingActivities-88.2-100.0-70.10.0-31.00.0

srt:ParentCompany


Intercompany
Period End2020-09-302019-09-302019-06-302019-03-312018-12-31
Value0.00.0430.0563
Percentage of IntercompanyReturnOfCapitalNonCashInvestingActivities-0.0-0.0-28.80.0-19.0

srt:SubsidiaryIssuer


Intercompany
Period End2020-09-302019-09-302019-06-302019-03-312018-12-312018-09-30
Value140.01.60.014780.0
Percentage of IntercompanyReturnOfCapitalNonCashInvestingActivities-11.8-0.0-1.10.0-50.00.0

wrk:InterestIncome

wrk:InterestIncome


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value11111114171425
Percentage of InterestIncome100.0100.0100.0100.0100.0100.0100.0

wrk:IssuanceOfClassCommonStockNetOfStockReceivedForMinimumTaxWithholdings us-gaap:StatementEquityComponents

wrk:IssuanceOfClassCommonStockNetOfStockReceivedForMinimumTaxWithholdings

us-gaap:AdditionalPaidInCapital


Issuance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value387713264.3-1.617117.0-1.9845.27.71312
Percentage of IssuanceOfClassCommonStockNetOfStockReceivedForMinimumTaxWithholdings100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStock


Issuance
Period End2021-06-302021-03-312019-09-302019-06-302019-03-312018-12-312018-06-302018-03-31
Value0.00.10.00.00.00.1-0.10.1
Percentage of IssuanceOfClassCommonStockNetOfStockReceivedForMinimumTaxWithholdings0.00.10.00.0-0.00.1-1.30.7

us-gaap:RetainedEarnings


Issuance
Period End2021-06-302021-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-0.3-0.20.00.00.0-0.4-0.2-0.1-6.4
Percentage of IssuanceOfClassCommonStockNetOfStockReceivedForMinimumTaxWithholdings-0.8-0.30.00.0-0.0-0.5-3.8-1.3-47.4

wrk:IssuancesOfCommonStockNetOfRelatedMinimumTaxWithholdings

wrk:IssuancesOfCommonStockNetOfRelatedMinimumTaxWithholdings


Issuances
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-12.45.53.3-2.1159.75.4-9.7123.45.86.011
Percentage of IssuancesOfCommonStockNetOfRelatedMinimumTaxWithholdings100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wrk:IssuancesOfCommonStockNetOfRelatedMinimumTaxWithholdings us-gaap:ConsolidatedEntities

srt:ParentCompany


Issuances
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value5.53.3-2.1159.75.4-9.712
Percentage of IssuancesOfCommonStockNetOfRelatedMinimumTaxWithholdings100.0100.0100.0100.0100.0100.0100.0100.0

wrk:IssuancesOfCommonStockNetOfRelatedTaxWithholdings

wrk:IssuancesOfCommonStockNetOfRelatedTaxWithholdings


Issuances
Period End2021-06-302020-06-30
Value143.3
Percentage of IssuancesOfCommonStockNetOfRelatedTaxWithholdings100.0100.0

wrk:LostProductionFromRansomwareIncidentToDate

wrk:LostProductionFromRansomwareIncidentToDate


Lost
Period End2021-03-31
Value115000.0
Percentage of LostProductionFromRansomwareIncidentToDate100.0

wrk:LostProductionFromRansomwareIncidentToDate us-gaap:SubsequentEventType

us-gaap:SubsequentEvent


Lost
Period End2021-02-04
Value85000.0
Percentage of LostProductionFromRansomwareIncidentToDate0.0

wrk:MultiemployerAndOtherPlansPeriodCost us-gaap:RetirementPlanType

wrk:MultiemployerAndOtherPlansPeriodCost

us-gaap:PensionPlansDefinedBenefit


Multiemployer
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value400000.0400000.0400000.01000000.0300000.0400000.0300000.0900000.0200000.0100000.0200000.0100000.0200000.0300000.0800000.0
Percentage of MultiemployerAndOtherPlansPeriodCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wrk:MultiemployerPensionWithdrawalIncomeExpense

wrk:MultiemployerPensionWithdrawalIncomeExpense


Multiemployer
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302018-06-302017-12-31
Value02000000.0-900000.04600000.01700000.0-4200000.0-180000000.0
Percentage of MultiemployerPensionWithdrawalIncomeExpense0.0100.0100.0100.0100.0100.0100.0

wrk:MultiemployerPensionWithdrawalIncomeExpense us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries


Multiemployer
Period End2020-09-302020-06-302020-03-31
Value02000000.0-100000.0
Percentage of MultiemployerPensionWithdrawalIncomeExpense0.0100.011.1

srt:NonGuarantorSubsidiaries


Multiemployer
Period End2020-09-302020-06-302020-03-312019-09-302019-06-30
Value00-800000.04100000.01700000.0
Percentage of MultiemployerPensionWithdrawalIncomeExpense0.00.088.989.1100.0

wrk:MultiemployerPlansWithdrawalObligationPerMonth us-gaap:RetirementPlanName

wrk:MultiemployerPlansWithdrawalObligationPerMonth

wrk:PaceIndustryUnionManagementPensionFund


Multiemployer
Period End2021-06-302021-03-312020-12-31
Value00700000.0
Percentage of MultiemployerPlansWithdrawalObligationPerMonth0.00.0100.0

wrk:NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoption us-gaap:CumulativeEffectPeriodOfAdoption, us-gaap:StatementEquityComponents

wrk:NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoption

srt:CumulativeEffectPeriodOfAdoptionAdjustment, us-gaap:RetainedEarnings


New
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-31
Value0.00.0-3.80.00.073
Percentage of NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoption0.00.0100.00.00.0100.0

wrk:NonAllocatedExpenses us-gaap:ConsolidationItems

wrk:NonAllocatedExpenses

us-gaap:CorporateNonSegment


Non
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value2239231618171815242419-2.8132115
Percentage of NonAllocatedExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wrk:PensionFundingMoreLessThanExpense

wrk:PensionFundingMoreLessThanExpense


Pension
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value262828191917231717141222242523
Percentage of PensionFundingMoreLessThanExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wrk:ProceedsFromSaleOfCostMethodInvestment

wrk:ProceedsFromSaleOfCostMethodInvestment


Proceeds
Period End2021-06-302021-03-312020-12-31
Value1.25.023
Percentage of ProceedsFromSaleOfCostMethodInvestment100.0100.0100.0

wrk:ProceedsFromSaleOfSawmill

wrk:ProceedsFromSaleOfSawmill


Proceeds
Period End2021-06-30
Value0.0
Percentage of ProceedsFromSaleOfSawmill0.0

wrk:RansomwareRecoveryCostsExpense

wrk:RansomwareRecoveryCostsExpense


Ransomware
Period End2021-06-302021-03-31
Value9.020
Percentage of RansomwareRecoveryCostsExpense100.0100.0

wrk:ReclassificationFromCreditLossStandardToRetainedEarnings us-gaap:AdjustmentsForNewAccountingPronouncements

wrk:ReclassificationFromCreditLossStandardToRetainedEarnings

us-gaap:AccountingStandardsUpdate201613


Reclassification
Period End2020-10-01
Value3800000.0
Percentage of ReclassificationFromCreditLossStandardToRetainedEarnings100.0

wrk:ReductionOfCostOfGoodsSold

wrk:ReductionOfCostOfGoodsSold


Reduction
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value0.00.40.64.44.20.423
Percentage of ReductionOfCostOfGoodsSold0.0100.0100.0100.0100.0100.0100.0

wrk:ReductionOfInterestExpenseNet

wrk:ReductionOfInterestExpenseNet


Reduction
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value0.00.90.32.96.00.910
Percentage of ReductionOfInterestExpenseNet0.0100.0100.0100.0100.0100.0100.0

wrk:RestructuringAndOtherCosts

wrk:RestructuringAndOtherCosts


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value6.95.27.7569.716306617345440173116
Percentage of RestructuringAndOtherCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wrk:RestructuringAndOtherCostsNet

wrk:RestructuringAndOtherCostsNet


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value6.95.27.7569.71630661734544017311638591881
Percentage of RestructuringAndOtherCostsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wrk:RestructuringAndOtherCostsNet us-gaap:ConsolidatedEntities

srt:NonGuarantorSubsidiaries


Restructuring
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value559.714286416305437142514
Percentage of RestructuringAndOtherCostsNet98.2100.087.894.796.491.688.899.893.581.978.988.3

srt:SubsidiaryIssuer


Restructuring
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-12-31
Value1.00.02.01.62.31.43.92.43.02.50.8
Percentage of RestructuringAndOtherCostsNet1.80.012.25.33.57.811.26.017.57.94.9

wrk:RestructuringAndOtherCostsNetEquipmentAndInventoryRelocationCosts

wrk:RestructuringAndOtherCostsNetEquipmentAndInventoryRelocationCosts


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value1100000.00200000.02000000.0200000.0900000.0500000.01900000.01800000.01400000.0700000.0600000.0600000.02700000.01900000.0
Percentage of RestructuringAndOtherCostsNetEquipmentAndInventoryRelocationCosts100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wrk:RestructuringAndOtherCostsNetFacilityCarryingCosts

wrk:RestructuringAndOtherCostsNetFacilityCarryingCosts


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0.80.20.81.20.40.40.61.30.81.10.90.90.91.21.2
Percentage of RestructuringAndOtherCostsNetFacilityCarryingCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wrk:RestructuringAndOtherCostsNetPropertyPlantAndEquipmentCosts

wrk:RestructuringAndOtherCostsNetPropertyPlantAndEquipmentCosts


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value0.00.00.223-0.30.32.727
Percentage of RestructuringAndOtherCostsNetPropertyPlantAndEquipmentCosts0.00.0100.0100.0100.0100.0100.0100.0

wrk:RestructuringAndOtherCostsNetSeveranceAndOtherEmployeeCosts

wrk:RestructuringAndOtherCostsNetSeveranceAndOtherEmployeeCosts


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0.30.00.11.70.20.0-0.3-0.10.60.55.8-0.11.00.00.4
Percentage of RestructuringAndOtherCostsNetSeveranceAndOtherEmployeeCosts100.00.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.00.0100.0

wrk:RestructuringAndOtherCostsOther

wrk:RestructuringAndOtherCostsOther


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-0.11.11.12.92.38.45.41211102833101011
Percentage of RestructuringAndOtherCostsOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wrk:RestructuringAndOtherCostsOther us-gaap:StatementBusinessSegments

us-gaap:AllOtherSegments


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-0.11.11.12.92.38.45.41211102833101011
Percentage of RestructuringAndOtherCostsOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wrk:RestructuringAndOtherCostsReserveAccrualAdjustment

wrk:RestructuringAndOtherCostsReserveAccrualAdjustment


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value400000.0-1400000.0-1100000.0-5100000.0800000.0-3100000.01200000.0-100000.0-400000.0-800000.0-1900000.0-1300000.0-1100000.05100000.0-3700000.0
Percentage of RestructuringAndOtherCostsReserveAccrualAdjustment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wrk:RestructuringAndOtherCostsReserveForeignCurrencyRateChanges

wrk:RestructuringAndOtherCostsReserveForeignCurrencyRateChanges


Restructuring
Period End2021-03-312020-12-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0100000.0100000.0-300000.0200000.0-300000.0200000.0-200000.0-1000000.00-300000.0
Percentage of RestructuringAndOtherCostsReserveForeignCurrencyRateChanges0.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0

wrk:RestructuringAndOtherCostsReservePeriodExpense

wrk:RestructuringAndOtherCostsReservePeriodExpense


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value3.7999999999999992.9000000000000015.4194.28.419225.215165.33.26.02.0
Percentage of RestructuringAndOtherCostsReservePeriodExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wrk:RestructuringAndOtherCostsReserveSettledWithCash

wrk:RestructuringAndOtherCostsReserveSettledWithCash


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value4.33.47.0218.08.918238.7149.85.56.69.18.6
Percentage of RestructuringAndOtherCostsReserveSettledWithCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wrk:SegmentReportingInformationSegmentIncome us-gaap:ConsolidationItems

wrk:SegmentReportingInformationSegmentIncome

us-gaap:OperatingSegments


Segment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value453286307373323335331584485396324490457373363
Percentage of SegmentReportingInformationSegmentIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wrk:SegmentReportingInformationSegmentIncome us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, wrk:ConsumerPackaging


Segment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value1328192919590461359185761391269494
Percentage of SegmentReportingInformationSegmentIncome29.128.330.124.529.527.114.023.118.821.523.728.527.525.325.9

us-gaap:OperatingSegments, wrk:CorrugatedPackaging


Segment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value321205215281227244283449392310246353321262269
Percentage of SegmentReportingInformationSegmentIncome70.971.769.975.570.572.985.677.080.978.476.172.170.370.474.3

us-gaap:OperatingSegments, wrk:LandAndDevelopment


Segment
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0.00.00.01.4-0.31.60.50.7-2.89.916-0.7
Percentage of SegmentReportingInformationSegmentIncome0.00.00.00.4-0.10.30.10.2-0.62.24.3-0.2

wrk:SellingGeneralAndAdministrativeExpenseExcludingIntangibleAmortization

wrk:SellingGeneralAndAdministrativeExpenseExcludingIntangibleAmortization


Selling
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value450458417390390418425427442444400336380395380
Percentage of SellingGeneralAndAdministrativeExpenseExcludingIntangibleAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wrk:SellingGeneralAndAdministrativeExpenseExcludingIntangibleAmortization us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries


Selling
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value251827286626141323202424
Percentage of SellingGeneralAndAdministrativeExpenseExcludingIntangibleAmortization6.64.86.76.815.65.93.23.37.15.56.36.4

srt:NonGuarantorSubsidiaries


Selling
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value362371390396362416429387364359370356
Percentage of SellingGeneralAndAdministrativeExpenseExcludingIntangibleAmortization92.895.193.393.284.694.296.796.7108.494.593.693.6

srt:SubsidiaryIssuer


Selling
Period End2020-09-302020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value2.10.40.10.2-0.40.30.11.10.00.4
Percentage of SellingGeneralAndAdministrativeExpenseExcludingIntangibleAmortization0.50.10.00.0-0.10.10.00.30.00.1

wrk:SellingGeneralAndAdministrativeIntangibleAmortization

wrk:SellingGeneralAndAdministrativeIntangibleAmortization


Selling
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value88889199991001011021021029273757572
Percentage of SellingGeneralAndAdministrativeIntangibleAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wrk:SellingGeneralAndAdministrativeIntangibleAmortization us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries


Selling
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value242424262626262626262626
Percentage of SellingGeneralAndAdministrativeIntangibleAmortization24.724.624.525.525.425.525.728.135.534.534.735.9

srt:NonGuarantorSubsidiaries


Selling
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value747575757676766647494946
Percentage of SellingGeneralAndAdministrativeIntangibleAmortization75.375.475.574.574.674.574.371.964.565.565.364.1

wrk:StockIssuedDuringPeriodIssuanceOfClassCommonStockNetOfStockReceivedForMinimumTaxWithholdings us-gaap:StatementEquityComponents

wrk:StockIssuedDuringPeriodIssuanceOfClassCommonStockNetOfStockReceivedForMinimumTaxWithholdings

us-gaap:CommonStock


Stock
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value600000.0900000.0200000.00600000.0300000.0400000.0100000.02400000.0100000.0400000.0800000.0400000.0
Percentage of StockIssuedDuringPeriodIssuanceOfClassCommonStockNetOfStockReceivedForMinimumTaxWithholdings100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wrk:StockIssuedDuringPeriodIssuanceOfClassCommonStockNetOfStockReceivedForTaxWithholdings us-gaap:StatementEquityComponents

wrk:StockIssuedDuringPeriodIssuanceOfClassCommonStockNetOfStockReceivedForTaxWithholdings

us-gaap:CommonStock


Stock
Period End2021-06-302021-03-312020-06-302020-03-31
Value1000000.02600000.0300000.0800000.0
Percentage of StockIssuedDuringPeriodIssuanceOfClassCommonStockNetOfStockReceivedForTaxWithholdings100.0100.0100.0100.0

wrk:TaxCutsAndJobsActOf2017ReclassificationFromAociToRetainedEarningsNetOfTax us-gaap:AdjustmentsForNewAccountingPronouncements, us-gaap:StatementEquityComponents

wrk:TaxCutsAndJobsActOf2017ReclassificationFromAociToRetainedEarningsNetOfTax

us-gaap:AccountingStandardsUpdate201802, us-gaap:Parent


Tax
Period End2020-09-302020-06-302020-03-312019-12-31
Value0.00.00.073
Percentage of TaxCutsAndJobsActOf2017ReclassificationFromAociToRetainedEarningsNetOfTax0.00.00.0100.0

wrk:VariableAndShortTermLeaseCost

wrk:VariableAndShortTermLeaseCost


Variable
Period End2020-09-302020-06-302020-03-31
Value252527
Percentage of VariableAndShortTermLeaseCost100.0100.0100.0

us-gaap:AccrualForEnvironmentalLossContingencies

us-gaap:AccrualForEnvironmentalLossContingencies


Accrual
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value4.64.95.55.78.19.5101010101110
Percentage of AccrualForEnvironmentalLossContingencies100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccrualForEnvironmentalLossContingencies us-gaap:BalanceSheetLocation

us-gaap:OtherCurrentLiabilities


Accrual
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value2.93.22.72.75.25.85.35.24.24.14.14.1
Percentage of AccrualForEnvironmentalLossContingencies63.065.349.147.464.261.150.048.139.338.036.638.0

us-gaap:OtherNoncurrentLiabilities


Accrual
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value1.71.72.83.02.93.75.35.66.56.77.16.7
Percentage of AccrualForEnvironmentalLossContingencies37.034.750.952.635.838.950.051.960.762.063.462.0

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent


Allowance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-09-30
Value69716866725853535046474945
Percentage of AllowanceForDoubtfulAccountsReceivableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetRetirementObligation

us-gaap:AssetRetirementObligation


Asset
Period End2020-09-302019-09-302018-09-302017-09-30
Value72727270
Percentage of AssetRetirementObligation100.0100.0100.0100.0

us-gaap:AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent

us-gaap:AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-09-30
Value9.8139.47.03.33.37.32526333959173
Percentage of AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent us-gaap:ConsolidatedEntities

srt:NonGuarantorSubsidiaries


Assets
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value7.03.33.37.32526333959
Percentage of AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-09-302015-09-30
Value549334253251291640156151179154260636452272312298340228
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations us-gaap:ConsolidatedEntities

srt:GuarantorSubsidiaries


Cash
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-09-30
Value1051784698.71712195049019324484341
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations42.161.273.45.611.77.012.719.377.142.89.015.414.512.2

srt:NonGuarantorSubsidiaries


Cash
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-09-30
Value145113170147133166134210145259248263260305
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations57.938.826.694.488.393.087.380.722.957.291.084.487.589.6

us-gaap:ContractWithCustomerAssetNetCurrent

us-gaap:ContractWithCustomerAssetNetCurrent


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value193191193185202198195188193194188183
Percentage of ContractWithCustomerAssetNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrumentFaceAmount us-gaap:DebtInstrument

us-gaap:DebtInstrumentFaceAmount

wrk:PublicBondObligations


Debt
Period End2020-09-302019-09-302018-09-302017-09-30
Value7000650049003800
Percentage of DebtInstrumentFaceAmount100.0100.0100.0100.0

us-gaap:DebtInstrumentFairValue

us-gaap:DebtInstrumentFairValue


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-09-30
Value9600970010000104001080010900108001060011000110001080064006800
Percentage of DebtInstrumentFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtLongtermAndShorttermCombinedAmount

us-gaap:DebtLongtermAndShorttermCombinedAmount


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-09-30
Value86728942893994301005310856102141006310538107951082064156554
Percentage of DebtLongtermAndShorttermCombinedAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtLongtermAndShorttermCombinedAmount us-gaap:DebtInstrument

wrk:InternationalAndOtherDebt


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-09-30
Value245231158138130137120705832333670
Percentage of DebtLongtermAndShorttermCombinedAmount2.82.61.81.51.31.31.20.70.60.30.30.61.1

us-gaap:DebtLongtermAndShorttermCombinedAmount us-gaap:DebtInstrument, us-gaap:LongtermDebtType

wrk:FinanceLeaseObligations, us-gaap:SecuredDebt


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value266269272274277280284185
Percentage of DebtLongtermAndShorttermCombinedAmount3.13.03.02.92.82.62.81.8

wrk:NotesDueFiscal2020To2022, us-gaap:UnsecuredDebt


Debt
Period End2020-09-302020-06-302020-03-312019-12-312019-09-30
Value399399505506507
Percentage of DebtLongtermAndShorttermCombinedAmount4.24.04.75.05.0

wrk:NotesDueFiscal2022, us-gaap:UnsecuredDebt


Debt
Period End2021-06-302021-03-312020-12-312020-09-30
Value399399399399
Percentage of DebtLongtermAndShorttermCombinedAmount4.64.54.54.2

wrk:NotesDueFiscal2023To2028, us-gaap:UnsecuredDebt


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-09-30
Value3777377537743773377237713770376937683271327825341368
Percentage of DebtLongtermAndShorttermCombinedAmount43.642.242.240.037.534.736.937.535.830.330.339.520.9

wrk:NotesDueFiscal2029To2033, us-gaap:UnsecuredDebt


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value27692772277527782781219121942197220017071710964
Percentage of DebtLongtermAndShorttermCombinedAmount31.931.031.029.527.720.221.521.820.915.815.815.0

wrk:NotesDueFiscal2037To2047, us-gaap:UnsecuredDebt


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-09-30
Value178178178178178178178179179179179178178
Percentage of DebtLongtermAndShorttermCombinedAmount2.12.02.01.91.81.61.81.81.71.71.72.82.7

wrk:RevolvingCreditAndSwingFacilities, us-gaap:UnsecuredDebt


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-09-30
Value330370433250285807356396405527490355436
Percentage of DebtLongtermAndShorttermCombinedAmount3.84.14.82.72.87.43.53.93.84.94.55.56.7

wrk:TermLoanFacilities, us-gaap:UnsecuredDebt


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-09-30
Value598848848154717972096229522952506290529065991622
Percentage of DebtLongtermAndShorttermCombinedAmount6.99.59.516.417.919.322.522.823.826.926.99.324.8

us-gaap:DebtLongtermAndShorttermCombinedAmount us-gaap:DebtInstrument, us-gaap:ShortTermDebtType

wrk:VendorFinancingAndCommercialCardPrograms, wrk:ShortTermUnsecuredDebt


Debt
Period End2021-06-302021-03-312020-12-312020-09-302019-09-30
Value106969889123
Percentage of DebtLongtermAndShorttermCombinedAmount1.21.11.11.01.2

us-gaap:DebtWeightedAverageInterestRate

us-gaap:DebtWeightedAverageInterestRate


Debt
Period End2020-09-302019-09-302018-09-302017-09-30
Value3.80.040.0410.036
Percentage of DebtWeightedAverageInterestRate100.0100.0100.0100.0

us-gaap:DebtWeightedAverageInterestRate us-gaap:DebtInstrument

wrk:InternationalAndOtherDebt


Debt
Period End2020-09-302019-09-302018-09-302017-09-30
Value3.10.0660.0610.068
Percentage of DebtWeightedAverageInterestRate81.6165.0148.8188.9

us-gaap:DebtWeightedAverageInterestRate us-gaap:DebtInstrument, us-gaap:LongtermDebtType

wrk:FinanceLeaseObligations, us-gaap:SecuredDebt


Debt
Period End2020-09-302019-09-30
Value4.04.3
Percentage of DebtWeightedAverageInterestRate105.310750.0

wrk:NotesDueFiscal2020To2022, us-gaap:UnsecuredDebt


Debt
Period End2020-09-302019-09-30
Value5.04.9
Percentage of DebtWeightedAverageInterestRate131.612250.0

wrk:NotesDueFiscal2023To2028, us-gaap:UnsecuredDebt


Debt
Period End2020-09-302019-09-302018-09-302017-09-30
Value4.00.040.0380.036
Percentage of DebtWeightedAverageInterestRate105.3100.092.7100.0

wrk:NotesDueFiscal2029To2033, us-gaap:UnsecuredDebt


Debt
Period End2020-09-302019-09-302018-09-30
Value4.50.0490.052
Percentage of DebtWeightedAverageInterestRate118.4122.5126.8

wrk:NotesDueFiscal2037To2047, us-gaap:UnsecuredDebt


Debt
Period End2020-09-302019-09-302018-09-302017-09-30
Value6.20.0620.0630.063
Percentage of DebtWeightedAverageInterestRate163.2155.0153.7175.0

wrk:RevolvingCreditAndSwingFacilities, us-gaap:UnsecuredDebt


Debt
Period End2020-09-302019-09-302018-09-302017-09-30
Value1.10.0290.0320.011
Percentage of DebtWeightedAverageInterestRate28.972.578.030.6

wrk:TermLoanFacilities, us-gaap:UnsecuredDebt


Debt
Period End2020-09-302019-09-302018-09-302017-09-30
Value1.90.0330.0370.025
Percentage of DebtWeightedAverageInterestRate50.082.590.269.4

us-gaap:DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible

us-gaap:DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible


Decrease
Period End2020-09-30
Value21
Percentage of DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible100.0

us-gaap:DeferredIncomeTaxAssetsNet

us-gaap:DeferredIncomeTaxAssetsNet


Deferred
Period End2020-09-302019-09-30
Value3333
Percentage of DeferredIncomeTaxAssetsNet100.0100.0

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredIncomeTaxLiabilities


Deferred
Period End2020-09-302019-09-302018-09-302017-09-30
Value3413325127304043
Percentage of DeferredIncomeTaxLiabilities100.0100.0100.0100.0

u