WY


Line plots across dimensions of each concept
Tables

Table of contents



us-gaap:CommonStockSharesIssued

us-gaap:CommonStockSharesOutstanding

us-gaap:CommonStockSharesAuthorized

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:EarningsPerShareBasic

us-gaap:Revenues
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
us-gaap:ProductOrService, us-gaap:StatementGeographical, us-gaap:ContractWithCustomerSalesChannel, us-gaap:StatementBusinessSegments
us-gaap:ProductOrService, us-gaap:StatementGeographical, us-gaap:StatementBusinessSegments
us-gaap:StatementBusinessSegments

us-gaap:CostOfGoodsAndServicesSold

us-gaap:GrossProfit

us-gaap:ResearchAndDevelopmentExpense

us-gaap:GeneralAndAdministrativeExpense

us-gaap:OperatingIncomeLoss

us-gaap:InterestExpense

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxesPaidNet

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:Assets
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:Liabilities

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:AssetsCurrent

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:AccountsReceivableNetCurrent

us-gaap:InventoryNet

us-gaap:InventoryLIFOReserve

us-gaap:NoncurrentAssets
us-gaap:StatementGeographical

us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:OtherAssetsNoncurrent

us-gaap:LiabilitiesCurrent

us-gaap:LongTermDebtCurrent

us-gaap:AccountsPayableCurrent

us-gaap:OtherAccruedLiabilitiesCurrent

us-gaap:LongTermDebt
us-gaap:DebtInstrument

us-gaap:LongTermDebtNoncurrent

us-gaap:DeferredTaxLiabilitiesNoncurrent
us-gaap:RetirementPlanType
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:DepreciationDepletionAndAmortization

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet

us-gaap:IncreaseDecreaseInInventories

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:ProceedsFromIssuanceOfLongTermDebt

us-gaap:PaymentsForRepurchaseOfCommonStock
us-gaap:DebtInstrument
us-gaap:DebtInstrumentInterestRateStatedPercentage
us-gaap:DebtInstrument, us-gaap:SubsequentEventType
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod

us-gaap:ShareBasedCompensation

us-gaap:DeferredTaxAssetsNet

us-gaap:DeferredTaxAssetsValuationAllowance

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
us-gaap:StatementEquityComponents
us-gaap:AdjustmentsToAdditionalPaidInCapitalOther
us-gaap:StatementEquityComponents
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CommonStockDividendsPerShareCashPaid

us-gaap:DeferredIncomeTaxExpenseBenefit
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanInterestCost
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanServiceCost
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanSettlementsPlanAssets
us-gaap:StatementEquityComponents
us-gaap:DividendsCommonStock

us-gaap:EarningsPerShareBasicAndDiluted

us-gaap:ForeignCurrencyTransactionGainLossBeforeTax

us-gaap:GainLossRelatedToLitigationSettlement

us-gaap:ImpairmentOfLongLivedAssetsToBeDisposedOf

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities

us-gaap:IncreaseDecreaseInIncomeTaxes

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets

us-gaap:IncreaseDecreaseInReceivables

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
us-gaap:AwardType

us-gaap:InterestAndOtherIncome

us-gaap:InterestPaidCapitalized

us-gaap:InterestPaidNet

us-gaap:LossContingencyLossInPeriod

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax
us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
us-gaap:StatementEquityComponents

us-gaap:OtherCostAndExpenseOperating

us-gaap:OtherOperatingIncomeExpenseNet

us-gaap:PaymentsForCapitalImprovements

us-gaap:PaymentsForProceedsFromOtherInvestingActivities

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:PensionAndOtherPostretirementBenefitContributions

us-gaap:PensionAndOtherPostretirementBenefitExpense

us-gaap:ProceedsFromCollectionOfNotesReceivable
us-gaap:DebtInstrument
us-gaap:ProceedsFromDebtNetOfIssuanceCosts
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:StatementGeographical
us-gaap:ProceedsFromDivestitureOfBusinesses

us-gaap:ProceedsFromLinesOfCredit

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities

us-gaap:ProceedsFromRelatedPartyDebt

us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment

us-gaap:ProceedsFromStockOptionsExercised
us-gaap:StatementEquityComponents
us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax

us-gaap:RepaymentsOfLinesOfCredit

us-gaap:RepaymentsOfRelatedPartyDebt

us-gaap:SellingExpense
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised

us-gaap:StockRepurchasedDuringPeriodShares
us-gaap:StatementEquityComponents
us-gaap:StockRepurchasedDuringPeriodValue
us-gaap:StatementEquityComponents
wy:AdjustmentsRelatedToNewAccountingPronouncement
us-gaap:StatementEquityComponents
wy:AdjustmentsRelatedToNewAccountingPronouncementAndOther

wy:BasisofLandSold

wy:DeferredIncomeTaxExpenseBenefitIncludingContinuingAndDiscontinuedOperations

wy:IncomeLossBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

wy:NetContributionToEarnings
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

wy:NonOperatingPensionAndOtherPostRetirementBenefitCostsCredits
us-gaap:StatementGeographical
wy:NumberOfAcersOfTimberlandsAgreedToBeSold

wy:PaymentsForCapitalExpendituresOfPropertyPlantAndEquipment
us-gaap:StatementEquityComponents
wy:ReclassificationOfAccumulatedUnrealizedGainsOnAvailableForSaleSecuritiesAdoptionOfAccountingStandard

wy:RepaymentsOfLongTermDebtExcludingRelatedPartyDebt

us-gaap:AccrualForEnvironmentalLossContingencies

us-gaap:AccruedLiabilitiesCurrent

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:AssetRetirementObligation

us-gaap:AssetsHeldForSaleNotPartOfDisposalGroupCurrent

us-gaap:BankOverdrafts

us-gaap:CommonStockValueOutstanding

us-gaap:CompensatingBalanceAmount

us-gaap:DebtInstrumentCarryingAmount
us-gaap:DebtInstrument
us-gaap:DebtInstrumentFaceAmount
us-gaap:BusinessAcquisition
us-gaap:DebtInstrumentFairValue

us-gaap:DebtInstrumentUnamortizedDiscountPremiumNet

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsNetNoncurrent

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsTaxCreditCarryforwards

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsCompensatedAbsences

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment

us-gaap:DefinedBenefitPlanAccumulatedBenefitObligation
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanBenefitObligation
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo
us-gaap:CollectiveBargainingArrangement, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear
us-gaap:RetirementPlanType
us-gaap:StatementScenario, us-gaap:RetirementPlanName, us-gaap:RetirementPlanSponsorLocation
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:DefinedBenefitPlanFairValueOfPlanAssets
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:RetirementPlanName, us-gaap:RetirementPlanSponsorLocation
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanName
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanName, us-gaap:RetirementPlanSponsorLocation
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanName, us-gaap:RetirementPlanSponsorLocation, us-gaap:ValuationTechnique
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanType
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FinancialInstrument, us-gaap:RetirementPlanType
us-gaap:RetirementPlanName, us-gaap:RetirementPlanSponsorLocation
us-gaap:RetirementPlanType
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanFundedStatusOfPlan
us-gaap:RetirementPlanName, us-gaap:RetirementPlanSponsorLocation
us-gaap:DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear
us-gaap:RetirementPlanName, us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:RetirementPlanSponsorLocation
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsPlanAssets

us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation

us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation

us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanName
us-gaap:DefinedBenefitPlanWeightedAverageAssetAllocations

us-gaap:EmployeeRelatedLiabilitiesCurrentAndNoncurrent

us-gaap:IncomeTaxesReceivable

us-gaap:InterestPayableCurrent
us-gaap:PublicUtilitiesInventory
us-gaap:LIFOInventoryAmount

us-gaap:LettersOfCreditOutstandingAmount
us-gaap:DebtInstrument, us-gaap:SubsequentEventType
us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity

us-gaap:LinesOfCreditCurrent

us-gaap:LongTermDebtFairValue
us-gaap:DebtInstrument
us-gaap:DebtInstrument
us-gaap:LongTermLineOfCredit

us-gaap:NotesAndLoansPayable
us-gaap:DebtInstrument
us-gaap:IncomeTaxAuthority
us-gaap:OperatingLossCarryforwards

us-gaap:OtherLongTermDebt

us-gaap:PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesNoncurrent
us-gaap:RetirementPlanType
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities
us-gaap:StatementClassOfStock
us-gaap:PreferredStockSharesAuthorized

us-gaap:PrepaidExpenseCurrent

us-gaap:RestrictedInvestmentsCurrent

us-gaap:RestrictedInvestmentsNoncurrent
us-gaap:DebtInstrument
us-gaap:SeniorNotes
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
us-gaap:ShareRepurchaseProgram
us-gaap:StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents
us-gaap:IncomeTaxAuthority
us-gaap:TaxCreditCarryforwardAmount
us-gaap:IncomeTaxAuthority, us-gaap:TaxCreditCarryforward

us-gaap:UnamortizedDebtIssuanceExpense

wy:AccruedTaxesPayable

wy:ConstructionInProgress

wy:CurrentPortionOfLeaseLiabilities

wy:CustomerRebatesVolumeDiscountsAndDeferredIncome

wy:DeferralOfSharesInToDeferredCompensationPlan

wy:DeferredTaxAssetsDeferredTaxExpenseDepletion

wy:DeferredTaxAssetsDeferredTaxExpenseIncentiveCompensation

wy:DeferredTaxAssetsExcessInterest

wy:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensionAndPostretirementBenefits

wy:DeferredTaxLiabilitiesTimberInstallmentNotes
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanType
wy:DefinedBenefitPlanDerivativeNotionalAmount
us-gaap:FinancialInstrument, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanName
wy:DefinedBenefitPlanWeightedAverageAssetAllocationsIncreaseDecrease
us-gaap:PublicUtilitiesInventory
wy:FIFOAndMovingAverageCostMethodsInventories

wy:LeaseLiabilities

wy:LeasedAssets

wy:LongTermDebtExcludingLinesOfCreditCurrent

wy:MineralsAndMineralRights

wy:NetDeferredTaxAssetLiability

wy:NonRecourseDebtCurrent
us-gaap:AwardType
wy:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsServicePeriodMetOutstanding

wy:SuretyBonds

wy:TimberAndTimberLandsAtCostLessDepletion

Tables

  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:CommonStockSharesIssued ███████████████▇█▁▁▁▁▁▁▃▃▃▃▃▂▂▂▂▂▂▂▂▂▂▂746745745744744746749757756755753752751748747733759510511514518524525586584583582577546542540537537536537538538535535NA211211NANANA
us-gaap:CommonStockSharesOutstanding ███████████████▇█▁▁▁▁▁▁▃▃▃▃▃▂▂▂▂▂▂▂▂▂▂▂746745745744744746749757756755753752751748747733759510511514518524525586584583582577546542540537537536537538538535535NA211211NANANA
us-gaap:CommonStockSharesAuthorized ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄136013601360136013601360136013601360136013601360136013601360136013601360136013601360136013601360136013601360136013601360136013601360136013601360136013601360NA400400NANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding 747NA746746746NA757760759NA756756754NA754747634NA517519527NA536589589NA587557550NA542540539NA539541540NA318212211NA211NA211
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic 746NA745745746NA754757756NA753752750NA749743632NA514516523NA531586584NA582552545NA539537537NA537538537NA317211211NA211NA211
us-gaap:EarningsPerShareBasic NA-0.020.130.17-0.39-0.120.340.420.350.360.170.030.210.740.30.210.110.110.350.260.170.322.170.480.310.070.270.350.260.260.220.160.080.120.290.020.180.323.520.07-0.1-0.83NA-0.5-1.25
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:Revenues ▄▃▄▄▄▄▆▇▅▅▅▅▄▃▄▄▅▄▅▅▄▅▆▆▆█▇▇▆▆▅▅▃▃▃▃▃▄▄▅▂▂▂▂▁172815481671169216431636191020651865182318721808169315961709165518351734182018071721178819151964198422562181214119512000177217931494161515691610157816641664180514191455140713911275
 us-gaap:Revenues us-gaap:ConsolidationItems us-gaap:OperatingSegments1850NA179618231768NA20382204NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:Revenues us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,wy:Timberlands381NANANA431NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:Revenues us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,wy:WoodProducts1235NANANA1094NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:Revenues us-gaap:ProductOrService,us-gaap:StatementBusinessSegments wy:Deliveredlogs,wy:Timberlands▁▁▂▃▄▆▇▇██▆344348364367393414429440448445418NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:Revenues us-gaap:ProductOrService,us-gaap:StatementBusinessSegments wy:OrientedStrandBoard,wy:WoodProducts▃▁▁▁▁▂▄█▅▅▆▅▄190157159156160167215277232233243225203NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:Revenues us-gaap:ProductOrService,us-gaap:StatementBusinessSegments wy:Structurallumber,wy:WoodProducts▃▂▃▃▁▁▅█▅▃▄▄▂508466487495444427581681569517525538478NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:Revenues us-gaap:ProductOrService,us-gaap:StatementGeographical,us-gaap:StatementBusinessSegments wy:Deliveredlogs,wy:West,wy:Timberlands▂▁▁▃▄▅▆██▆▅177169172194205221238262266242221NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:Revenues us-gaap:StatementBusinessSegments wy:Timberlands▁▁▂▂▄▆▆▇███381388398401431460468476490496491NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:Revenues us-gaap:StatementBusinessSegments wy:WoodProducts▃▂▃▃▁▁▅█▅▃▄12351115120412101094107513461531132412281299NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:CostOfGoodsAndServicesSold ▅▁▆▅▂▃██▃▂▄13821301139913901322134514521447134813161374NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:GrossProfit ▃▁▁▂▂▂▅█▆▆▆▅▄▃▄▄▃▃▃▃▃▄▄▅▄346247272302321291458618517507498472421331395397360344375333336389411465428NA453477418NA348277204NA286267254NA321327187NANANANA
us-gaap:ResearchAndDevelopmentExpense ▁▂▁▂▁▂▂▂▂▂▄▄▄▅▅▄▆▇▆▆▅█▅▇▇1212122222444554676658577NA887NA887NA777NA888NANANANA
us-gaap:GeneralAndAdministrativeExpense ▃▇▅▄▆▅▄▄▄▃▄▄▆▅▄▇▅▅▁▃▃▆▃▆█749485808982788078727576878478948584607174897388101NA112108118NA10795108NANANANANANANANANANANANA
us-gaap:OperatingIncomeLoss ▆▅▆▅▅▅▇█▇█▆▅▆▅▆▆▅▆▆▆▆▆▇▇▇▃▆▇▆▆▆▅▅▅▅▅▆▄▅▅▅▂▅▃▁24089202186174177337476404476205157293185274258186217259243200294318400324-972773112562562021761011311001272385316716484-178123-62-330
us-gaap:InterestExpense ▁▂▃▃▆▄▃▃▃▄▄▅▅▇██▄▂▂▂▁▃▂▁▁8589919110797939293969810099108114114978888888390888383NA958182NA878687NA8611793125104155106118115NANA
us-gaap:OtherNonoperatingIncomeExpense -5NANANA-8NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest ▆▄▅▅▁▄▇█▇█▅▅▆▅▆▆▅▅▆▆▆▆▇█▇▃▆▇▆▆▆▅▅▅▅▅▆▄▅▅▅147-1310291-393-114240382299374103581818718416110151175157120214237328250-19420324018518213010126552919156-35841220NANANANA
us-gaap:IncomeTaxExpenseBenefit ▄▅▅▃▁▄▄▇▆█▄▆▅▅▅▆▅▄▄▅▅▆▆▇▆-313-37-104-21-156530103-27342425223120-19-16131937395956NA364241NA1317-15NA-104-457-207-1025438-10135NA-176
us-gaap:IncomeTaxesPaidNet ▂▁▂▂▂▂▂▂▂▂▂▂▂█▂▁▁▂▂▂▂▂▂▂▁0-48-51501522411740234759511-1-12-1310-141355-50NANANA-2NANANA-10NANANA2NANANA-444NANANANA
us-gaap:ComprehensiveIncomeNetOfTax ▄▂▃▄▃▄▄▅▄▃▄▃▄▄▄▄▃▄▄▄▃▁█▅▄153-182118167693073065003074617273188202250198130171201200115-326959318179NA202218172NA158606NA164104134NA1065579NA106NANA
us-gaap:NetIncomeLoss ▃▂▃▃▁▂▄▄▄▄▃▃▃▅▃▃▃▃▃▃▃▃█▄▃150-1499128-289-932553172692711302415755122716881701911441011771164291194NA1571961441431178441651571099171111614-20-175NA-106-264
 us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents us-gaap:RetainedEarnings▆▄▅▆▁▃▇█▇150-1499128-289-93255317269NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:Assets ▂▁▂▂▂▂▂▃▃▃▄▄▄▅▇█17228164061683217029171321724917427180481788518059184021899019001192432094621989NA12486128201288313009134571344015706145051449815609139081251012592123381247512474125981283513039135801342914053NA1517515250NANANA
us-gaap:Liabilities ▃▂▂▂▂▂▂▃▃▃▃▄▄▄▇█▇▁▂▂▂▂▁▂▁▁▄▂▂▂▂▂▂▂▂▂▃▃▄9146822982338305833182038370876788949160935799009786100631175612559114987617794279587982815375848563762076669492800282348479798582788269833180368303887688159437NA1111811196NANANA
us-gaap:LiabilitiesAndStockholdersEquity ▅▄▄▄▄▅▅▅▅▅▅▆▆▆▇██▁▁▁▁▂▂▃▃▃▃▂▁▁▁▁▁▁▁▂▂▂▂172281640616832170291713217249174271804817885180591840218990190011924320946219892177912486128201288313009134571344015706145051449815609139081251012592123381247512474125981283513039135801342914053NA1517515250NANANA
us-gaap:StockholdersEquity ▁█80828177NANA8801NANANANANANANANANANANANA4869NANANA530458567092685267956078586842444070434041864197426347954734470246124610NA40464044NANANA
 us-gaap:StockholdersEquity us-gaap:StatementEquityComponents us-gaap:AdditionalPaidInCapital█▁81598152NANA81218172NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:StockholdersEquity us-gaap:StatementEquityComponents us-gaap:CommonStock█▁933932NANA931933NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:AssetsCurrent ▅▂▂▂▂▂▂▄▃▂▁▃▁▂██▂▄▅▅▅▇▇█▄▄24931611181716961774160217142228191917151517208814651622335633281830217425022517265230333012329023152326NANANA2407NANANANANANANANANANANANANANANA
us-gaap:CashAndCashEquivalentsAtCarryingValue ▅▁▁▁▁▂▂▃▂▃▂▃▂▃▃▂▂▄▄▄▄▆▆▃▃▃▅█▃▃▂▃▃▄▄▃▅▅▅▆▇▆▆1458139153212259334348901598824497701455676769485415101210481121115815801620845780835139723626398986088617289539718811463146713681846216018691628NA1656
us-gaap:AccountsReceivableNetCurrent █▁▆390309368NANA337NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:InventoryNet ▄▃▂▃▃▂▂▃▃▂▁▁▂▁▂▂█▆▆▆▇▆▆▆▇▅480416393425451389389414445383340349386358368387677568590603645595578596626542NANANA531NANANA476NANANANA479NANA447NANANA
us-gaap:InventoryLIFOReserve ▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁███▇██▇▇▇▆76767879797969707070707071716968123124120118120120116119119112NANANA112NANANA120NANANANANANANANANANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:NoncurrentAssets NA14349NANANA14998NANANA15145NANANA16433NANANA9301NANANA9324NANANA9438NANANA6910NANANA7064NANANA7415NANANA7713NANANA
 us-gaap:NoncurrentAssets us-gaap:StatementGeographical country:CANA275NANANA220NANANA223NANANA206NANANA460NANANA579NANANA652NANANA728NANANA745NANANA827NANANA881NANANA
 us-gaap:NoncurrentAssets us-gaap:StatementGeographical country:USNA14074NANANA14778NANANA14922NANANA15700NANANA8187NANANA8069NANANA8116NANANA5523NANANA5682NANANA5946NANANA6226NANANA
us-gaap:PropertyPlantAndEquipmentGross NA5446NANANA5233NANANA4956NANANA4868NANANA8880NANANA8947NANANA9072NANANA9260NANANANANANANANANANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:BuildingAndBuildingImprovementsNA999NANANA942NANANA867NANANA789NANANA791NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:LandNA87NANANA87NANANA88NANANA90NANANA99NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:MachineryAndEquipmentNA3425NANANA3240NANANA3037NANANA3022NANANA2811NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:PropertyPlantAndEquipmentOtherTypesNA193NANANA179NANANA182NANANA194NANANA195NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType wy:RoadsNA742NANANA785NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment ▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁██████████34603477347134373424337634113370335433383393331933463306336433346371629463616378630463246408642863576368NANANA6388NANANANANANANANANANANANANANANA
us-gaap:PropertyPlantAndEquipmentNet ▃▄▃▃▃▃▂▂▂▂▁▁▁▂▁▁█▇▆▇▇▇▇▇▇█19111969186019011917185716721597157316181534153415441562147614622763258624842557252426232534259926112704NANANA2872NANANANANANANANANANANANANANANA
us-gaap:OtherAssetsNoncurrent ▆▇██▇▄▃▃▃▃▂▂▁▁▄▇▆▃▂▂▂▃▃▇▇▆399414461461444312289279278285259246229224317424409302267274269289292419429403NANANANANANANANANANANANANANANANANANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:LiabilitiesCurrent ▄▁▂▂▂▄▂▁▁▂▁▃▁▂█▃▁▁▁▁▁▁▁▂▂▂181610061169122312011939127310229111165102315241022120633271557984875898919852918957106910721128NANANA1605NANANANANANANANANANANANANANANA
us-gaap:LongTermDebtCurrent NA0NA0050000062626683432811981NANA0NANANA0NANANA0NANANA409NANANANANANANANANANANANANANANA
us-gaap:AccountsPayableCurrent ▂▂▂▃▂▁▃▃▂▂▂▂▁▁▁▄▇▅▆▆▅▅▆▅█▇241246242271243222271270245249259252227233234300385326344343319331351335409384NANANA373NANANANANANANANANANANANANANANA
us-gaap:OtherAccruedLiabilitiesCurrent ▄▃▂▂▃▁▂▂▃▂▃▂▂▂▄▄▆▃▅▅▆▃▆▅█▇948269748158697379747570717391861078310210611178114106133119NANANA120NANANANANANANANANANANANANANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:LongTermDebt █▂▄▃▃▁▁▁▁▁▁▄▄▄74266147659062936401591959215924592859925995660466066610NANANA489148914891489148914891489148914891NANANA4291NANANANANANANANANANANANANANANA
 us-gaap:LongTermDebt us-gaap:DebtInstrument wy:Fixedinterestrate█▃▃▃▃▁▁▁▁▂▂▄▄▄66515922592559285931569456975700570457685771605460576061NANANA4238NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:LongTermDebt us-gaap:DebtInstrument wy:Variableinterestrate█▄▇▃▄▆▁▁▁▁▁▅▅▅775455665365470650224224224224224550549549NANANA549NANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LongTermDebtNoncurrent ▄▄▄▄▄▂▃▃▃▃▃▃▄▄▄██▁▁▁▁▁▁▁▁▁62996147615061536156541959215924592859305933593662636329632980137803489148914891489148914891489148914891NANANA3882NANANANANANANANANANANANANANANA
us-gaap:DeferredTaxLiabilitiesNoncurrent █▁106NANANA43NANANA0NANANA0NANA7186259196195206338410306206NANANA0NANANANANANANANANANANANANANANA
 us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent us-gaap:RetirementPlanType us-gaap:OtherPostretirementBenefitPlansDefinedBenefitNA124NANANA138NANANA181NANANA204NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent us-gaap:RetirementPlanType us-gaap:PensionPlansDefinedBenefitNA569NANANA389NANANA1305NANANA1117NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherLiabilitiesNoncurrent ▅▆▇▇▇▁▂▂▃▁▁▂▂▁▂▂▃▁▁▁▂▃▄▄▆█352377383397398275291295299276273280281269285285311267277275284308318334364409NANANANANANANANANANANANANANANANANANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:StockholdersEquity ▁█80828177NANA8801NANANANANANANANANANANANA4869NANANA530458567092685267956078586842444070434041864197426347954734470246124610NA40464044NANANA
 us-gaap:StockholdersEquity us-gaap:StatementEquityComponents us-gaap:AdditionalPaidInCapital█▁81598152NANA81218172NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
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us-gaap:RetainedEarningsAccumulatedDeficit ▁▁▃▃▄▆██▇▆▆▆▇█▆▆▇▇█████▄▃▃▃▃▃▂▂▂▂▂▂▂▂▂▂-109-326441854310931439144113651078105011541364142111011106117713491449142814451508149449534429437935026421916913212817619211618718136NA26282658NANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▆▆▇▇▇▅▂▂▁▂▄▃▃▃▅▅▅▅▄▄▃▃▇███▃▃▃▂▅▄▅▅██▇▇█-901-904-736-755-794-1152-1552-1603-1786-1562-1337-1379-1428-1459-1110-1133-1163-1212-1313-1323-1379-1393-857-663-701-686-1463-1508-1530-1558-1197-1238-1214-1179-655-662-756-791-643NA-635-664NANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▃▅▅▆▂▅▃█▄▆▅▇▃▁▆▇▃▆▅▆▃▅▆▅▃86292292396-142928759713635432348935-1513474924733928236677304353322109NANANA-61NANANA-60NANANA-109193NANA190114NANA-436
us-gaap:NetCashProvidedByUsedInInvestingActivities ▃▂▁▁▂▁▁▁▁▂▃▁▁█▂▃▂▁▁▁▁▁▄▁▁441155-97-83212-176-115-73-76175298-38-68196821735024-163-113-92-119-124624-93-46NANANA-42NANANA-57NANANA151-35NANA13863NANA-102
us-gaap:NetCashProvidedByUsedInFinancingActivities █▅▅▅▅▆▅▅▅▅▄▅▅▁▅▄▄▅▅▅▅▅▅▆▆792-461-254-360-273-130-525-221-286-202-825-205-188-1920-277-765-668-212-242-311-380-220-265-101-118NANANA-156NANANA-108NANANA-46-59NANA-3764NANA-100
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▃▅▅▆▂▅▃█▄▆▅▇▃▁▆▇▃▆▅▆▃▅▆▅▃86292292396-142928759713635432348935-1513474924733928236677304353322109NANANA-61NANANA-60NANANA-109193NANA190114NANA-436
us-gaap:NetIncomeLoss ▃▂▃▃▁▂▄▄▄▄▃▃▃▅▃▃▃▃▃▃▃▃█▄▃150-1499128-289-932553172692711302415755122716881701911441011771164291194NA1571961441431178441651571099171111614-20-175NA-106-264
 us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents us-gaap:RetainedEarnings▆▄▅▆▁▃▇█▇150-1499128-289-93255317269NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:DepreciationDepletionAndAmortization ▅▆▇▅▅▆▅▅▅▆▆▆▆▁▇█▇▅▅▅▅▅▅▆▆12312813512412312512211912012713212913384139147142120118118123118123126126NANANA112NANANA113NANANA123NANANA126NANANANA
us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet ▄▅▄▅▂▆▅▅▁█▅▄▄▃▅▆▅▅▂▃▄▅▄▄▄15231017-9271918-184822158418271918-45111613146NANANA-2NANANA-17NANANA33-105NANA63-56NANA29
us-gaap:IncreaseDecreaseInInventories ▇▅▂▃▇▄▃▂▇▆▃▃▅▃▂▁▆▃▄▂▇▅▃▂█7221-30-28605-27-306643-11-2128-12-32-6043-19-6-425720-8-3488NANANA68NANANA40NANANA66-45NANA101-129NANA-37
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities ▃▂▁▁▂▁▁▁▁▂▃▁▁█▂▃▂▁▁▁▁▁▄▁▁441155-97-83212-176-115-73-76175298-38-68196821735024-163-113-92-119-124624-93-46NANANA-42NANANA-57NANANA151-35NANA13863NANA-102
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities █▅▅▅▅▆▅▅▅▅▄▅▅▁▅▄▄▅▅▅▅▅▅▆▆792-461-254-360-273-130-525-221-286-202-825-205-188-1920-277-765-668-212-242-311-380-220-265-101-118NANANA-156NANANA-108NANANA-46-59NANA-3764NANA-100
us-gaap:ProceedsFromIssuanceOfLongTermDebt █▁7320NANA7390NANA00225000300300109800000-887NANANANANANANANANANANANANANANANANANANANANANA
us-gaap:PaymentsForRepurchaseOfCommonStock ▁▁▁▁▂▂▃▁▁▁▁▁▁▁▄██▁▂▂▃▂▂▁▁▁000060932730000000374831798347715425380123000NANANANANANANANANANANANANANANA0NANA2
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument wy:A400PercentDue20300.04NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument wy:A470PercentDue20210.047NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument,us-gaap:SubsequentEventType wy:A470PercentDue2021,us-gaap:SubsequentEventNANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA

Common Stock Par Or Stated Value Per Share

Common Stock Shares Issued

us-gaap:CommonStockSharesIssued



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-31
Value746745745744744746749757756755753752751748747733759510511514518524525586584583582577546542540537537536537538538535535211211211
Percentage of CommonStockSharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Common Stock Shares Outstanding

us-gaap:CommonStockSharesOutstanding



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-312007-12-31
Value746745745744744746749757756755753752751748747733759510511514518524525586584583582577546542540537537536537538538535535211211211209
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Common Stock Shares Authorized

us-gaap:CommonStockSharesAuthorized



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-04-152010-03-312009-12-312008-12-31
Value136013601360136013601360136013601360136013601360136013601360136013601360136013601360136013601360136013601360136013601360136013601360136013601360136013601360400400400400
Percentage of CommonStockSharesAuthorized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-03-31
Value747746746746757760759756756754754747634517519527536589589587557550542540539539541540318212211211211
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-03-31
Value746745745746754757756753752750749743632514516523531586584582552545539537537537538537317211211211211
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-06-302009-03-31
Value-0.020.130.17-0.39-0.120.340.420.350.360.170.030.210.740.30.210.110.110.350.260.170.322.170.480.310.070.270.350.260.260.220.160.080.120.290.020.180.323.520.07-0.1-0.83-0.5-1.25
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

Income Loss From Continuing Operations Per Basic Share

Income Loss From Continuing Operations Per Diluted Share

Revenues

us-gaap:Revenues



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value172815481671169216431636191020651865182318721808169315961709165518351734182018071721178819151964198422562181214119512000177217931494161515691610157816641664180514191455140713911275
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems

us-gaap:IntersegmentElimination



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-122-123-125-131-125-129-128-139
Percentage of Revenues-7.1-7.9-7.5-7.7-7.6-7.9-6.7-6.7
Percentage of Revenues-7.1-7.9-7.5-7.7-7.6-7.9-6.7-6.7
Percentage of Revenues us-gaap:IntersegmentElimination100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value185017961823176820382204
Percentage of Revenues107.1107.5107.7107.6106.7106.7
Percentage of Revenues107.1107.5107.7107.6106.7106.7
Percentage of Revenues us-gaap:OperatingSegments100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:IntersegmentElimination, wy:Timberlands



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value122122125131125128128139
Percentage of Revenues7.17.97.57.77.67.86.76.7
Percentage of Revenues7.17.97.57.77.67.86.76.7
Percentage of Revenues us-gaap:IntersegmentElimination wy:Timberlands100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, wy:REENR



Period End2020-03-312019-03-31
Value112118
Percentage of Revenues6.57.2
Percentage of Revenues6.57.2
Percentage of Revenues us-gaap:OperatingSegments wy:REENR100.0100.0

us-gaap:OperatingSegments, wy:Timberlands



Period End2020-03-312019-03-31
Value381431
Percentage of Revenues22.026.2
Percentage of Revenues22.026.2
Percentage of Revenues us-gaap:OperatingSegments wy:Timberlands100.0100.0

us-gaap:OperatingSegments, wy:WoodProducts



Period End2020-03-312019-03-31
Value12351094
Percentage of Revenues71.566.6
Percentage of Revenues71.566.6
Percentage of Revenues us-gaap:OperatingSegments wy:WoodProducts100.0100.0

us-gaap:ProductOrService, us-gaap:StatementBusinessSegments

wy:Complementarybuildingproducts, wy:WoodProducts



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value153136162167137135152160137124146149122
Percentage of Revenues8.98.89.79.98.38.38.07.77.36.87.88.27.2
Percentage of Revenues8.98.89.79.98.38.38.07.77.36.87.88.27.2
Percentage of Revenues wy:Complementarybuildingproducts wy:WoodProducts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wy:Deliveredlogs, wy:Timberlands



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value344348364367393414429440448445418
Percentage of Revenues19.922.521.821.723.925.322.521.324.024.422.3
Percentage of Revenues19.922.521.821.723.925.322.521.324.024.422.3
Percentage of Revenues wy:Deliveredlogs wy:Timberlands100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wy:Energyandnaturalresourcesproducts, wy:REENR



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value17202422222020201719181916
Percentage of Revenues1.01.31.41.31.31.21.01.00.91.01.01.10.9
Percentage of Revenues1.01.31.41.31.31.21.01.00.91.01.01.10.9
Percentage of Revenues wy:Energyandnaturalresourcesproducts wy:REENR100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wy:EngineeredIjoists, wy:WoodProducts



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value78779086707591927885938573
Percentage of Revenues4.55.05.45.14.34.64.84.54.24.75.04.74.3
Percentage of Revenues4.55.05.45.14.34.64.84.54.24.75.04.74.3
Percentage of Revenues wy:EngineeredIjoists wy:WoodProducts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wy:EngineeredSolidSection, wy:WoodProducts



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value127122138134116121132139129122131130117
Percentage of Revenues7.37.98.37.97.17.46.96.76.96.77.07.26.9
Percentage of Revenues7.37.98.37.97.17.46.96.76.96.77.07.26.9
Percentage of Revenues wy:EngineeredSolidSection wy:WoodProducts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wy:Mediumdensityfiberboard, wy:WoodProducts



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value44394445383948474337485147
Percentage of Revenues2.52.52.62.72.32.42.52.32.32.02.62.82.8
Percentage of Revenues2.52.52.62.72.32.42.52.32.32.02.62.82.8
Percentage of Revenues wy:Mediumdensityfiberboard wy:WoodProducts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wy:OrientedStrandBoard, wy:WoodProducts



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value190157159156160167215277232233243225203
Percentage of Revenues11.010.19.59.29.710.211.313.412.412.813.012.412.0
Percentage of Revenues11.010.19.59.29.710.211.313.412.412.813.012.412.0
Percentage of Revenues wy:OrientedStrandBoard wy:WoodProducts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wy:Otherproducts, wy:Timberlands



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value17119914111111131634
Percentage of Revenues1.00.70.50.50.90.70.60.50.70.91.8
Percentage of Revenues1.00.70.50.50.90.70.60.50.70.91.8
Percentage of Revenues wy:Otherproducts wy:Timberlands100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wy:Otherproducts, wy:WoodProducts



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value9687828385697480867068
Percentage of Revenues5.65.64.94.95.24.23.93.94.63.83.6
Percentage of Revenues5.65.64.94.95.24.23.93.94.63.83.6
Percentage of Revenues wy:Otherproducts wy:WoodProducts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wy:Realestatesales, wy:REENR



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value95254559968176383480642737
Percentage of Revenues5.51.62.73.55.85.04.01.81.84.43.41.52.2
Percentage of Revenues5.51.62.73.55.85.04.01.81.84.43.41.52.2
Percentage of Revenues wy:Realestatesales wy:REENR100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wy:Recreationalandotherleaserevenue, wy:Timberlands



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value1516151515151514141416
Percentage of Revenues0.91.00.90.90.90.90.80.70.80.80.9
Percentage of Revenues0.91.00.90.90.90.90.80.70.80.80.9
Percentage of Revenues wy:Recreationalandotherleaserevenue wy:Timberlands100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wy:SoftwoodPlywood, wy:WoodProducts



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value39314244444253555040454744
Percentage of Revenues2.32.02.52.62.72.62.82.72.72.22.42.62.6
Percentage of Revenues2.32.02.52.62.72.62.82.72.72.22.42.62.6
Percentage of Revenues wy:SoftwoodPlywood wy:WoodProducts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wy:Structurallumber, wy:WoodProducts



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value508466487495444427581681569517525538478
Percentage of Revenues29.430.129.129.327.026.130.433.030.528.428.029.828.2
Percentage of Revenues29.430.129.129.327.026.130.433.030.528.428.029.828.2
Percentage of Revenues wy:Structurallumber wy:WoodProducts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wy:Stumpageandpayascuttimber, wy:Timberlands



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value513101092013111521231712
Percentage of Revenues0.30.80.60.60.51.20.70.50.81.21.20.90.7
Percentage of Revenues0.30.80.60.60.51.20.70.50.81.21.20.90.7
Percentage of Revenues wy:Stumpageandpayascuttimber wy:Timberlands100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProductOrService, us-gaap:StatementGeographical, us-gaap:ContractWithCustomerSalesChannel, us-gaap:StatementBusinessSegments

wy:Deliveredlogs, wy:West, wy:Domestic, wy:Timberlands



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value878486104101105125136137126102
Percentage of Revenues5.05.45.16.16.16.46.56.67.36.95.4
Percentage of Revenues5.05.45.16.16.16.46.56.67.36.95.4
Percentage of Revenues wy:Deliveredlogs wy:West wy:Domestic wy:Timberlands100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wy:Deliveredlogs, wy:West, wy:ExportSales, wy:Timberlands



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value90858690104116113126129116119
Percentage of Revenues5.25.55.15.36.37.15.96.16.96.46.4
Percentage of Revenues5.25.55.15.36.37.15.96.16.96.46.4
Percentage of Revenues wy:Deliveredlogs wy:West wy:ExportSales wy:Timberlands100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProductOrService, us-gaap:StatementGeographical, us-gaap:StatementBusinessSegments

wy:Deliveredlogs, wy:North, wy:Timberlands



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value1722241729292520252725
Percentage of Revenues1.01.41.41.01.81.81.31.01.31.51.3
Percentage of Revenues1.01.41.41.01.81.81.31.01.31.51.3
Percentage of Revenues wy:Deliveredlogs wy:North wy:Timberlands100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wy:Deliveredlogs, wy:South, wy:Timberlands



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value150157168156159153157158157165155
Percentage of Revenues8.710.110.19.29.79.48.27.78.49.18.3
Percentage of Revenues8.710.110.19.29.79.48.27.78.49.18.3
Percentage of Revenues wy:Deliveredlogs wy:South wy:Timberlands100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wy:Deliveredlogs, wy:West, wy:Timberlands



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value177169172194205221238262266242221
Percentage of Revenues10.210.910.311.512.513.512.512.714.313.311.8
Percentage of Revenues10.210.910.311.512.513.512.512.714.313.311.8
Percentage of Revenues wy:Deliveredlogs wy:West wy:Timberlands100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementBusinessSegments

wy:REENR



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-31
Value11245698111810196585199824653483839
Percentage of Revenues6.52.94.14.87.26.25.02.82.75.44.42.53.12.82.32.1
Percentage of Revenues6.52.94.14.87.26.25.02.82.75.44.42.53.12.82.32.1
Percentage of Revenues wy:REENR100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wy:Timberlands



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value381388398401431460468476490496491
Percentage of Revenues22.025.123.823.726.228.124.523.126.327.226.2
Percentage of Revenues22.025.123.823.726.228.124.523.126.327.226.2
Percentage of Revenues wy:Timberlands100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wy:WoodProducts



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value12351115120412101094107513461531132412281299
Percentage of Revenues71.572.072.171.566.665.770.574.171.067.469.4
Percentage of Revenues71.572.072.171.566.665.770.574.171.067.469.4
Percentage of Revenues wy:WoodProducts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Sales Revenue Net

Sales Revenue Goods Net

Cost Of Goods And Services Sold

us-gaap:CostOfGoodsAndServicesSold



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value13821301139913901322134514521447134813161374
Percentage of CostOfGoodsAndServicesSold100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues80.084.083.782.280.582.276.070.172.372.273.4

Cost Of Goods Sold

Gross Profit

us-gaap:GrossProfit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value346247272302321291458618517507498472421331395397360344375333336389411465428453477418348277204286267254321327187
Percentage of GrossProfit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues20.016.016.317.819.517.824.029.927.727.826.626.124.920.723.124.019.619.820.618.419.521.821.523.721.620.822.321.419.615.413.718.216.616.119.318.113.2

Costs And Expenses

Research And Development Expense

us-gaap:ResearchAndDevelopmentExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value1212122222444554676658577887887777888
Percentage of ResearchAndDevelopmentExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues0.10.10.10.10.10.10.10.10.10.10.20.20.20.30.30.20.30.40.30.30.30.40.30.40.40.40.40.40.50.40.50.40.40.40.50.40.6

General And Administrative Expense

us-gaap:GeneralAndAdministrativeExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-31
Value74948580898278807872757687847894858460717489738810111210811810795108
Percentage of GeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues4.36.15.14.75.45.04.13.94.23.94.04.25.15.34.65.74.64.83.33.94.35.03.84.55.15.15.06.06.05.37.2

Selling General And Administrative Expense

Operating Income Loss

us-gaap:OperatingIncomeLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value24089202186174177337476404476205157293185274258186217259243200294318400324-972773112562562021761011311001272385316716484-178123-62-330
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues13.95.712.111.010.610.817.623.121.726.111.08.717.311.616.015.610.112.514.213.411.616.416.620.416.3-4.312.714.513.112.811.49.86.88.16.47.915.13.210.09.15.9-12.28.7-4.5-25.9

Interest Expense

us-gaap:InterestExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-30
Value85899191107979392939698100991081141149788888883908883839581828786878611793125104155106118115
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues4.95.75.45.46.55.94.94.55.05.35.25.55.86.86.76.95.35.14.84.94.85.04.64.24.24.43.84.24.94.85.85.57.35.97.56.28.67.58.18.2

Other Nonoperating Income Expense

us-gaap:OtherNonoperatingIncomeExpense



Period End2020-03-312019-03-31
Value-5-8
Percentage of OtherNonoperatingIncomeExpense100.0100.0
Percentage of Revenues-0.3-0.5

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

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

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value147-1310291-393-114240382299374103581818718416110151175157120214237328250-19420324018518213010126552919156-35841220
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues8.5-0.86.15.4-23.9-7.012.618.516.020.55.53.210.75.510.89.75.52.99.68.77.012.012.416.712.6-8.69.311.29.59.17.35.61.73.41.81.29.9-2.15.00.71.4

Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest

Income Loss From Continuing Operations Before Income Taxes Domestic

Income Loss From Continuing Operations Before Income Taxes Foreign

Nonoperating Income Expense

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-03-31
Value-313-37-104-21-156530103-27342425223120-19-161319373959563642411317-15-104-457-207-1025438-10135-176
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-0.20.10.2-2.2-6.3-1.3-0.83.11.65.7-1.41.91.41.61.31.91.1-1.1-0.90.71.12.12.03.02.81.72.02.10.70.9-1.0-6.6-0.23.6-12.4-61.60.22.7-6.92.5-13.8

Income Taxes Paid Net

us-gaap:IncomeTaxesPaidNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value0-48-51501522411740234759511-1-12-1310-141355-50-2-102-444
Percentage of IncomeTaxesPaidNet0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues0.0-3.1-0.30.13.00.91.22.00.92.21.22.63.532.0-0.1-0.7-0.70.6-0.10.20.10.20.30.3-2.5-0.1-0.70.1-31.3

Profit Loss

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-30
Value153-182118167693073065003074617273188202250198130171201200115-3269593181792022181721586061641041341065579106
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues8.9-11.87.19.94.218.816.024.216.52.59.24.011.112.714.612.07.19.911.011.16.7-18.250.116.29.09.310.28.88.93.30.410.56.58.564.03.20.67.5

Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest

Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest

Net Income Loss

us-gaap:NetIncomeLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-06-302009-03-31
Value150-1499128-289-9325531726927113024157551227168817019114410117711642911941571961441431178441651571099171111614-20-175-106-264
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues8.7-0.95.97.6-17.6-5.713.415.414.414.96.91.39.334.513.310.24.44.010.58.05.99.960.814.89.87.29.27.47.16.64.72.74.010.00.66.310.367.10.8-1.4-12.0-7.6-20.7

us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value150-1499128-289-93255317269
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues8.7-0.95.97.6-17.6-5.713.415.414.4
Percentage of Revenues us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.0

Net Income Loss Available To Common Stockholders Basic

Net Income Loss Attributable To Noncontrolling Interest

Assets

us-gaap:Assets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-31
Value1722816406168321702917132172491742718048178851805918402189901900119243209462198912486128201288313009134571344015706145051449815609139081251012592123381247512474125981283513039135801342914053151751525016695
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value82411771792172517012486137921872332
Percentage of Assets5.06.89.99.013.618.59.517.418.5
Percentage of Assets5.06.89.99.013.618.59.517.418.5
Percentage of Assets us-gaap:CorporateNonSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, wy:TimberlandsandRealEstateENR



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value1313013838141221560872607327
Percentage of Assets80.080.278.281.158.154.4
Percentage of Assets80.080.278.281.158.154.4
Percentage of Assets us-gaap:OperatingSegments wy:TimberlandsandRealEstateENR100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, wy:WoodProducts



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value245222342145191015411430132613191256
Percentage of Assets14.913.011.99.912.310.69.110.510.0
Percentage of Assets14.913.011.99.912.310.69.110.510.0
Percentage of Assets us-gaap:OperatingSegments wy:WoodProducts100.0100.0100.0100.0100.0100.0100.0100.0100.0

Liabilities

us-gaap:Liabilities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-31
Value9146822982338305833182038370876788949160935799009786100631175612559114987617794279587982815375848563762076669492800282348479798582788269833180368303887688159437111181119611848
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets53.150.248.948.848.647.648.048.649.750.750.852.151.552.356.157.10.061.062.061.861.460.656.454.552.552.960.857.565.867.364.766.466.366.162.663.765.465.667.273.373.471.0

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-31
Value172281640616832170291713217249174271804817885180591840218990190011924320946219892177912486128201288313009134571344015706145051449815609139081251012592123381247512474125981283513039135801342914053151751525016695
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity



Period End2020-03-312019-12-312019-03-312015-12-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-31
Value8082817788014869530458567092685267956078586842444070434041864197426347954734470246124610404640444814
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets46.949.851.439.039.443.645.247.246.938.942.233.932.335.233.633.633.837.436.334.634.332.826.726.528.8

us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-312019-12-312019-03-312018-12-31
Value-901-904-794-1152
Percentage of StockholdersEquity-11.1-11.1-9.00.0
Percentage of Assets-5.2-5.5-4.6-6.7
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.0

us-gaap:AdditionalPaidInCapital



Period End2020-03-312019-12-312019-03-312018-12-31
Value8159815281218172
Percentage of StockholdersEquity101.099.792.30.0
Percentage of Assets47.449.747.447.4
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.0

us-gaap:CommonStock



Period End2020-03-312019-12-312019-03-312018-12-31
Value933932931933
Percentage of StockholdersEquity11.511.410.60.0
Percentage of Assets5.45.75.45.4
Percentage of Assets us-gaap:CommonStock0.00.00.00.0

us-gaap:RetainedEarnings



Period End2020-03-312019-12-312019-03-312018-12-31
Value-109-35431093
Percentage of StockholdersEquity-1.3-0.06.20.0
Percentage of Assets-0.6-0.03.26.3
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.0

wy:AccumulatedOtherPostretirementBenefitPlansDefinedBenefitPlansAdjustment



Period End2020-03-312019-12-312019-03-312018-12-31
Value-11-12-18-19
Percentage of StockholdersEquity-0.1-0.1-0.20.0
Percentage of Assets-0.1-0.1-0.1-0.1
Percentage of Assets wy:AccumulatedOtherPostretirementBenefitPlansDefinedBenefitPlansAdjustment0.00.00.00.0

wy:AccumulatedPensionPlansDefinedBenefitPlansAdjustment



Period End2020-03-312019-12-312019-03-312018-12-31
Value-1084-1128-1000-1343
Percentage of StockholdersEquity-13.4-13.8-11.40.0
Percentage of Assets-6.3-6.9-5.8-7.8
Percentage of Assets wy:AccumulatedPensionPlansDefinedBenefitPlansAdjustment0.00.00.00.0

wy:AccumulatedTranslationAdjustmentAndOther



Period End2020-03-312019-12-312019-03-312018-12-31
Value194236224210
Percentage of StockholdersEquity2.42.92.50.0
Percentage of Assets1.11.41.31.2
Percentage of Assets wy:AccumulatedTranslationAdjustmentAndOther0.00.00.00.0

Assets Current

us-gaap:AssetsCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value249316111817169617741602171422281919171515172088146516223356332818302174250225172652303330123290231523262407
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets14.59.810.810.010.49.39.812.310.79.58.211.07.78.416.015.10.017.419.519.520.422.522.420.916.016.019.1

Cash

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-03-312008-12-312007-12-312007-12-302006-12-31
Value145813915321225933434890159882449770145567676948541510121048112111581580162084578083513972362639898608861728953971881146314671368184621601869162816562294114114243
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets8.50.80.91.21.51.92.05.03.34.62.73.72.43.53.72.20.08.18.28.78.911.712.15.45.45.88.917.05.17.14.96.95.87.67.66.810.810.99.70.014.212.30.00.013.70.00.00.0

Short Term Investments

Accounts Receivable Net Current

us-gaap:AccountsReceivableNetCurrent



Period End2020-03-312019-12-312019-09-302018-12-31
Value390309368337
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0
Percentage of Assets2.31.92.22.0

Receivables Net Current

Inventory Net

us-gaap:InventoryNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-312011-12-312010-09-302009-12-31
Value480416393425451389389414445383340349386358368387677568590603645595578596626542531476479447
Percentage of InventoryNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.82.52.32.52.62.32.22.32.52.11.81.82.01.91.81.80.04.54.64.75.04.44.33.84.33.74.23.83.42.9

Inventory L I F O Reserve

us-gaap:InventoryLIFOReserve



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-312011-12-31
Value76767879797969707070707071716968123124120118120120116119119112112120
Percentage of InventoryLIFOReserve100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.40.50.50.50.50.50.40.40.40.40.40.40.40.40.30.30.01.00.90.90.90.90.90.80.80.80.91.0

Inventory Raw Materials And Supplies

Other Assets Current

Land

Machinery And Equipment Gross

Noncurrent Assets

us-gaap:NoncurrentAssets



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value143491499815145164339301932494386910706474157713
Percentage of NoncurrentAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets87.586.983.985.474.569.365.154.956.155.250.6

us-gaap:StatementGeographical

country:CA



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value275220223206460579652728745827881
Percentage of NoncurrentAssets1.91.51.51.34.96.26.910.510.511.211.4
Percentage of Assets1.71.31.21.13.74.34.55.85.96.25.8
Percentage of Assets country:CA0.00.00.00.00.00.00.00.00.00.00.0

country:US



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value140741477814922157008187806981165523568259466226
Percentage of NoncurrentAssets98.198.598.595.588.086.586.079.980.480.280.7
Percentage of Assets85.885.782.681.665.660.056.043.945.144.340.8
Percentage of Assets country:US0.00.00.00.00.00.00.00.00.00.00.0

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value54465233495648688880894790729260
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets33.230.327.425.371.166.562.673.5

us-gaap:PropertyPlantAndEquipmentByType

us-gaap:BuildingAndBuildingImprovements



Period End2019-12-312018-12-312017-12-312016-12-312015-12-31
Value999942867789791
Percentage of PropertyPlantAndEquipmentGross18.318.017.516.28.9
Percentage of Assets6.15.54.84.16.3
Percentage of Assets us-gaap:BuildingAndBuildingImprovements0.00.00.00.00.0

us-gaap:Land



Period End2019-12-312018-12-312017-12-312016-12-312015-12-31
Value8787889099
Percentage of PropertyPlantAndEquipmentGross1.61.71.81.81.1
Percentage of Assets0.50.50.50.50.8
Percentage of Assets us-gaap:Land0.00.00.00.00.0

us-gaap:MachineryAndEquipment



Period End2019-12-312018-12-312017-12-312016-12-312015-12-31
Value34253240303730222811
Percentage of PropertyPlantAndEquipmentGross62.961.961.362.131.7
Percentage of Assets20.918.816.815.722.5
Percentage of Assets us-gaap:MachineryAndEquipment0.00.00.00.00.0

us-gaap:PropertyPlantAndEquipmentOtherTypes



Period End2019-12-312018-12-312017-12-312016-12-312015-12-31
Value193179182194195
Percentage of PropertyPlantAndEquipmentGross3.53.43.74.02.2
Percentage of Assets1.21.01.01.01.6
Percentage of Assets us-gaap:PropertyPlantAndEquipmentOtherTypes0.00.00.00.00.0

wy:Roads



Period End2019-12-312018-12-31
Value742785
Percentage of PropertyPlantAndEquipmentGross13.615.0
Percentage of Assets4.54.6
Percentage of Assets wy:Roads0.00.0

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value346034773471343734243376341133703354333833933319334633063364333463716294636163786304632464086428635763686388
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets20.121.220.620.220.019.619.618.718.818.518.417.517.617.216.115.20.050.449.649.548.547.047.740.943.843.950.7

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value191119691860190119171857167215971573161815341534154415621476146227632586248425572524262325342599261127042872
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets11.112.011.111.211.210.89.68.88.89.08.38.18.18.17.06.60.020.719.419.819.419.518.916.518.018.722.8

Investments In Affiliates Subsidiaries Associates And Joint Ventures

Goodwill

Deferred Tax Assets Liabilities Net

Other Assets Noncurrent

us-gaap:OtherAssetsNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value399414461461444312289279278285259246229224317424409302267274269289292419429403
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.32.52.72.72.61.81.71.51.61.61.41.31.21.21.51.90.02.42.12.12.12.12.22.73.02.8

Liabilities Current

us-gaap:LiabilitiesCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value1816100611691223120119391273102291111651023152410221206332715579848758989198529189571069107211281605
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets10.56.16.97.27.011.27.35.75.16.55.68.05.46.315.97.10.07.07.07.16.56.87.16.87.47.812.7

Notes Payable Current

Long Term Debt Current

us-gaap:LongTermDebtCurrent



Period End2019-12-312019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-312014-12-312013-12-312012-12-31
Value00050000062626683432811981000409
Percentage of LongTermDebtCurrent0.00.00.0100.00.00.00.0100.0100.0100.0100.0100.0100.00.00.00.0100.0
Percentage of Assets0.00.00.02.90.00.00.00.30.33.51.81.59.50.00.00.03.2

Accounts Payable Current

us-gaap:AccountsPayableCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value241246242271243222271270245249259252227233234300385326344343319331351335409384373
Percentage of AccountsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.41.51.41.61.41.31.61.51.41.41.41.31.21.21.11.40.02.62.72.72.52.52.62.12.82.63.0

Other Accrued Liabilities Current

us-gaap:OtherAccruedLiabilitiesCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value948269748158697379747570717391861078310210611178114106133119120
Percentage of OtherAccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.50.50.40.40.50.30.40.40.40.40.40.40.40.40.40.40.00.70.80.80.90.60.80.70.90.81.0

Accrued Income Taxes Current

Other Liabilities Current

Long Term Debt

us-gaap:LongTermDebt



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value742661476590629364015919592159245928599259956604660666104891489148914891489148914891489148914291
Percentage of LongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets43.137.539.237.037.434.334.032.833.133.232.634.834.834.439.238.238.037.636.336.431.133.733.734.1

us-gaap:DebtInstrument

wy:A470PercentDue2021



Period End2020-03-31
Value577
Percentage of LongTermDebt7.8
Percentage of Assets3.3
Percentage of Assets wy:A470PercentDue20210.0

wy:Fixedinterestrate



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value665159225925592859315694569757005704576857716054605760614238
Percentage of LongTermDebt89.696.389.994.292.796.296.296.296.296.396.391.791.791.786.6
Percentage of Assets38.636.135.234.834.633.032.731.631.931.931.431.931.931.533.9
Percentage of Assets wy:Fixedinterestrate0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

wy:Variableinterestrate



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value775455665365470650224224224224224550549549549
Percentage of LongTermDebt10.47.410.15.87.311.03.83.83.83.73.78.38.38.311.2
Percentage of Assets4.52.84.02.12.73.81.31.21.31.21.22.92.92.94.4
Percentage of Assets wy:Variableinterestrate0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Long Term Debt Noncurrent

us-gaap:LongTermDebtNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value629961476150615361565419592159245928593059335936626363296329801378034891489148914891489148914891489148913882
Percentage of LongTermDebtNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets36.637.536.536.135.931.434.032.833.132.832.231.333.032.930.236.40.039.238.238.037.636.336.431.133.733.730.8

Deferred Tax Liabilities Noncurrent

us-gaap:DeferredTaxLiabilitiesNoncurrent



Period End2020-03-312019-12-312018-12-312017-12-312016-12-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value106430071862591961952063384103062060
Percentage of DeferredTaxLiabilitiesNoncurrent100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets0.10.00.20.00.00.00.72.01.51.51.52.52.62.11.40.0

Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent

us-gaap:RetirementPlanType

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-31
Value124138181204
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent100.0100.0100.0100.0
Percentage of Assets0.80.81.01.1
Percentage of Assets us-gaap:OtherPostretirementBenefitPlansDefinedBenefit0.00.00.00.0

us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-31
Value56938913051117
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent458.9281.9721.0547.5
Percentage of Assets3.52.37.25.8
Percentage of Assets us-gaap:PensionPlansDefinedBenefit0.00.00.00.0

Minority Interest

Other Liabilities Noncurrent

us-gaap:OtherLiabilitiesNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value352377383397398275291295299276273280281269285285311267277275284308318334364409
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.02.32.32.32.31.61.71.61.71.51.51.51.51.41.41.30.02.12.22.12.22.32.42.12.52.8

Stockholders Equity

us-gaap:StockholdersEquity



Period End2020-03-312019-12-312019-03-312015-12-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-31
Value8082817788014869530458567092685267956078586842444070434041864197426347954734470246124610404640444814
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets46.949.851.439.039.443.645.247.246.938.942.233.932.335.233.633.633.837.436.334.634.332.826.726.528.8

us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-312019-12-312019-03-312018-12-31
Value-901-904-794-1152
Percentage of StockholdersEquity-11.1-11.1-9.00.0
Percentage of Assets-5.2-5.5-4.6-6.7
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.0

us-gaap:AdditionalPaidInCapital



Period End2020-03-312019-12-312019-03-312018-12-31
Value8159815281218172
Percentage of StockholdersEquity101.099.792.30.0
Percentage of Assets47.449.747.447.4
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.0

us-gaap:CommonStock



Period End2020-03-312019-12-312019-03-312018-12-31
Value933932931933
Percentage of StockholdersEquity11.511.410.60.0
Percentage of Assets5.45.75.45.4
Percentage of Assets us-gaap:CommonStock0.00.00.00.0

us-gaap:RetainedEarnings



Period End2020-03-312019-12-312019-03-312018-12-31
Value-109-35431093
Percentage of StockholdersEquity-1.3-0.06.20.0
Percentage of Assets-0.6-0.03.26.3
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.0

wy:AccumulatedOtherPostretirementBenefitPlansDefinedBenefitPlansAdjustment



Period End2020-03-312019-12-312019-03-312018-12-31
Value-11-12-18-19
Percentage of StockholdersEquity-0.1-0.1-0.20.0
Percentage of Assets-0.1-0.1-0.1-0.1
Percentage of Assets wy:AccumulatedOtherPostretirementBenefitPlansDefinedBenefitPlansAdjustment0.00.00.00.0

wy:AccumulatedPensionPlansDefinedBenefitPlansAdjustment



Period End2020-03-312019-12-312019-03-312018-12-31
Value-1084-1128-1000-1343
Percentage of StockholdersEquity-13.4-13.8-11.40.0
Percentage of Assets-6.3-6.9-5.8-7.8
Percentage of Assets wy:AccumulatedPensionPlansDefinedBenefitPlansAdjustment0.00.00.00.0

wy:AccumulatedTranslationAdjustmentAndOther



Period End2020-03-312019-12-312019-03-312018-12-31
Value194236224210
Percentage of StockholdersEquity2.42.92.50.0
Percentage of Assets1.11.41.31.2
Percentage of Assets wy:AccumulatedTranslationAdjustmentAndOther0.00.00.00.0

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-31
Value-109-326441854310931439144113651078105011541364142111011106117713491449142814451508149449534429437935026421916913212817619211618718136262826583278
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-0.6-0.01.62.53.26.38.38.07.66.05.76.17.27.45.35.00.010.811.311.111.111.211.13.22.42.02.42.52.11.71.41.11.01.41.50.91.41.30.317.317.419.6

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-31
Value-901-904-736-755-794-1152-1552-1603-1786-1562-1337-1379-1428-1459-1110-1133-1163-1212-1313-1323-1379-1393-857-663-701-686-1463-1508-1530-1558-1197-1238-1214-1179-655-662-756-791-643-635-664-495
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-5.2-5.5-4.4-4.4-4.6-6.7-8.9-8.9-10.0-8.6-7.3-7.3-7.5-7.6-5.3-5.20.0-9.7-10.2-10.3-10.6-10.4-6.4-4.2-4.8-4.7-9.4-10.8-12.2-12.4-9.7-9.9-9.7-9.4-5.1-5.1-5.6-5.9-4.6-4.2-4.4-3.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-12-312010-03-312009-12-312009-03-31
Value86292292396-142928759713635432348935-1513474924733928236677304353322109-61-60-109193190114-436
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues5.018.917.523.4-0.917.84.628.97.319.417.327.02.1-9.520.329.72.619.615.520.34.517.018.416.45.5-3.1-4.0-6.911.613.47.8-34.2

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-12-312010-03-312009-12-312009-03-31
Value441155-97-83212-176-115-73-76175298-38-68196821735024-163-113-92-119-124624-93-46-42-57151-3513863-102
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues25.510.0-5.8-4.912.9-10.8-6.0-3.5-4.19.615.9-2.1-4.0123.312.721.11.3-9.4-6.2-5.1-6.9-6.932.6-4.7-2.3-2.2-3.89.6-2.19.74.3-8.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-12-312010-03-312009-12-312009-03-31
Value792-461-254-360-273-130-525-221-286-202-825-205-188-1920-277-765-668-212-242-311-380-220-265-101-118-156-108-46-59-3764-100
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues45.8-29.8-15.2-21.3-16.6-7.9-27.5-10.7-15.3-11.1-44.1-11.3-11.1-120.3-16.2-46.2-36.4-12.2-13.3-17.2-22.1-12.3-13.8-5.1-5.9-8.0-7.2-2.9-3.5-2.64.4-7.8

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-12-312010-03-312009-12-312009-03-31
Value86292292396-142928759713635432348935-1513474924733928236677304353322109-61-60-109193190114-436
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues5.018.917.523.4-0.917.84.628.97.319.417.327.02.1-9.520.329.72.619.615.520.34.517.018.416.45.5-3.1-4.0-6.911.613.47.8-34.2

Net Income Loss

us-gaap:NetIncomeLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-06-302009-03-31
Value150-1499128-289-9325531726927113024157551227168817019114410117711642911941571961441431178441651571099171111614-20-175-106-264
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues8.7-0.95.97.6-17.6-5.713.415.414.414.96.91.39.334.513.310.24.44.010.58.05.99.960.814.89.87.29.27.47.16.64.72.74.010.00.66.310.367.10.8-1.4-12.0-7.6-20.7

us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value150-1499128-289-93255317269
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues8.7-0.95.97.6-17.6-5.713.415.414.4
Percentage of Revenues us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.0

Profit Loss

Depreciation Depletion And Amortization

us-gaap:DepreciationDepletionAndAmortization



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value12312813512412312512211912012713212913384139147142120118118123118123126126112113123126
Percentage of DepreciationDepletionAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Other Operating Capital Net

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-12-312010-03-312009-12-312009-03-31
Value15231017-9271918-184822158418271918-45111613146-2-1733-10563-5629
Percentage of IncreaseDecreaseInOtherOperatingCapitalNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Inventories

us-gaap:IncreaseDecreaseInInventories



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-12-312010-03-312009-12-312009-03-31
Value7221-30-28605-27-306643-11-2128-12-32-6043-19-6-425720-8-3488684066-45101-129-37
Percentage of IncreaseDecreaseInInventories100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-12-312010-03-312009-12-312009-03-31
Value441155-97-83212-176-115-73-76175298-38-68196821735024-163-113-92-119-124624-93-46-42-57151-3513863-102
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues25.510.0-5.8-4.912.9-10.8-6.0-3.5-4.19.615.9-2.1-4.0123.312.721.11.3-9.4-6.2-5.1-6.9-6.932.6-4.7-2.3-2.2-3.89.6-2.19.74.3-8.0

Payments To Acquire Property Plant And Equipment

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-12-312010-03-312009-12-312009-03-31
Value792-461-254-360-273-130-525-221-286-202-825-205-188-1920-277-765-668-212-242-311-380-220-265-101-118-156-108-46-59-3764-100
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues45.8-29.8-15.2-21.3-16.6-7.9-27.5-10.7-15.3-11.1-44.1-11.3-11.1-120.3-16.2-46.2-36.4-12.2-13.3-17.2-22.1-12.3-13.8-5.1-5.9-8.0-7.2-2.9-3.5-2.64.4-7.8

Proceeds From Issuance Of Long Term Debt

us-gaap:ProceedsFromIssuanceOfLongTermDebt



Period End2020-03-312019-12-312019-03-312018-12-312018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value7320739000225000300300109800000-887
Percentage of ProceedsFromIssuanceOfLongTermDebt100.00.0100.00.00.00.0100.00.00.00.0100.0100.0100.00.00.00.00.00.0100.0

Repayments Of Long Term Debt

Payments Of Dividends

Payments Of Dividends

Payments For Repurchase Of Common Stock

us-gaap:PaymentsForRepurchaseOfCommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312009-12-312009-03-31
Value00006093273000000037483179834771542538012300002
Percentage of PaymentsForRepurchaseOfCommonStock0.00.00.00.0100.0100.0100.00.00.00.00.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0100.0

Repayments Of Long Term Debt

Debt Instrument Interest Rate Stated Percentage

us-gaap:DebtInstrument

us-gaap:DebtInstrumentInterestRateStatedPercentage

wy:A400PercentDue2030



Period End2020-03-31
Value0.04
Percentage of DebtInstrumentInterestRateStatedPercentage100.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.0
Percentage of LongTermDebtAndCapitalLeaseObligations wy:A400PercentDue20300.0

wy:A470PercentDue2021



Period End2020-03-31
Value0.047
Percentage of DebtInstrumentInterestRateStatedPercentage117.5
Percentage of LongTermDebtAndCapitalLeaseObligations0.0
Percentage of LongTermDebtAndCapitalLeaseObligations wy:A470PercentDue20210.0

us-gaap:DebtInstrument, us-gaap:SubsequentEventType

wy:A470PercentDue2021, us-gaap:SubsequentEvent



Period End2020-04-30
Value0.047
Percentage of DebtInstrumentInterestRateStatedPercentage0.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.0
Percentage of LongTermDebtAndCapitalLeaseObligations wy:A470PercentDue2021 us-gaap:SubsequentEvent0.0

Effective Income Tax Rate Continuing Operations

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

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber

us-gaap:EmployeeStockOption



Period End2019-12-312018-12-312017-12-312016-12-31
Value56814
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber100.0100.0100.0100.0

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

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:EmployeeStockOption



Period End2019-12-312018-12-312017-12-312016-12-31
Value27.326.7526.4724.96
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice100.0100.0100.0100.0

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

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod

us-gaap:PerformanceShares



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-31
Value377000.0-2000.00.00.0421000.0-1000.00.00.0344000.0-2000.00.00.0348000.0-2079.00.066285.0428794.0338.00.00.0238662.0-403.00.011761.0309642.0346107.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod100.0100.00.00.0100.0100.00.00.0100.0100.00.00.0100.0100.00.0100.0100.0100.00.00.0100.0100.00.0100.0100.0100.0

us-gaap:RestrictedStock



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-03-31
Value00000000000010000000
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod213.30.00.0212.40.00.0195.60.00.0219.30.0-0.0455.90.00.0181.60.068.4219.1204.4

Share Based Compensation

us-gaap:ShareBasedCompensation



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-12-312010-03-312009-12-312009-03-31
Value777791113991110910713162496881191191210148686
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Liabilities

Deferred Tax Assets Net

us-gaap:DeferredTaxAssetsNet



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value4013265577186648638691458130111931274
Percentage of DeferredTaxAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Unrecognized Tax Benefits

Deferred Tax Assets Valuation Allowance

us-gaap:DeferredTaxAssetsValuationAllowance



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value64616356727297144146120103
Percentage of DeferredTaxAssetsValuationAllowance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions

Cash And Cash Equivalents Period Increase Decrease

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-302017-12-312016-12-31
Value1458139153259334348824676
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0

Proceeds From Repayments Of Short Term Debt

Proceeds From Sale Of Short Term Investments

us-gaap:StatementEquityComponents

us-gaap:AdjustmentsToAdditionalPaidInCapitalOther

us-gaap:AdditionalPaidInCapital



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-6000-5-11-1-6
Percentage of AdjustmentsToAdditionalPaidInCapitalOther100.00.00.00.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

us-gaap:AdditionalPaidInCapital



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value77779111399
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:EmployeeStockOption



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-30
Value22221011111166210454456
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0

us-gaap:PerformanceShares



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-30
Value100100000000000000000000000
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount60.640.240.147.471.20.057.240.332.039.719.724.68.65.316.831.70.010.07.80.011.90.00.00.00.00.00.0

us-gaap:RestrictedStock



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302011-06-302010-06-302010-03-312009-09-30
Value0.00.00.0383000.00.00.00.00.0736000.0745000.0
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount0.00.00.013.40.00.00.00.00.00.0

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect



Period End2020-03-312019-12-312019-03-312018-12-31
Value1319-14-75-14
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0

us-gaap:CommonStockDividendsPerShareCashPaid



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value0.340.340.340.340.340.340.340.320.320.320.310.310.310.310.310.310.310.310.310.290.290.290.290.220.220.220.220.20.170.170.150.150.150.150.150.150.150.0526.460.050.050.050.050.250.25
Percentage of CommonStockDividendsPerShareCashPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxExpenseBenefit



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value-52-43-123-3986151033333-20403818-10-63132645893626-63934
Percentage of DeferredIncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value-1-2-1-2-2-2-2-2-2-2-2-2-2-3-2-2
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value-30-27-27-28-30-56-56-52-61-50-48-42-55-39-39-40
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses3000.01350.02700.01400.01500.02800.02800.02600.03050.02500.02400.02100.02750.01300.01950.02000.0

us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value0-1-1-2-1-2-2-2-2-2-2-2-2-1-2-2
Percentage of DefinedBenefitPlanAmortizationOfPriorServiceCostCredit0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value1000000.01000000.01000000.01000000.01000000.00.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.0
Percentage of DefinedBenefitPlanAmortizationOfPriorServiceCostCredit0.0-100.0-100.0-50.0-100.0-0.0-50.0-50.0-50.0-50.0-50.0-50.0-50.0-100.0-50.0-50.0

us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets

us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value595354546299100100100103101103102124125123
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanInterestCost

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value1121222122222123
Percentage of DefinedBenefitPlanInterestCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value35383940435958596066666666707069
Percentage of DefinedBenefitPlanInterestCost3500.03800.01950.04000.02150.02950.02900.05900.03000.03300.03300.03300.03300.07000.03500.02300.0

us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value2221322122222323
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value1727211747522525203223231330-3-2-2
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost850.01350.01050.01700.015833.311250.01250.02000.01600.01150.01150.0650.01500.0-100.0-100.0-66.7

us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1

us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0-606-455-20000
Percentage of DefinedBenefitPlanRecognizedNetGainLossDueToSettlements10.0100.00.0100.0100.0100.00.00.0

us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanServiceCost

us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value10888891081099710111311
Percentage of DefinedBenefitPlanServiceCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanSettlementsPlanAssets

us-gaap:PensionPlansDefinedBenefit



Period End2019-10-312019-06-302019-03-312018-12-31
Value6449455200
Percentage of DefinedBenefitPlanSettlementsPlanAssets100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:DividendsCommonStock

us-gaap:RetainedEarnings



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value256253253253-254254256243-242
Percentage of DividendsCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EarningsPerShareBasicAndDiluted



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-06-302015-03-312014-03-312013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-06-30
Value0.2-0.0200000000000000040.130.17-0.39-0.12000000000000010.340.420.350.360000000000000040.170.030.210.30.210.110.260.170.310.260.220.160.080.290.020.180.07
Percentage of EarningsPerShareBasicAndDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ForeignCurrencyTransactionGainLossBeforeTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-30
Value-80-12-3-1-22-2130-3-5-1-113-6-208-29-12-1312-142-4-410-97-18174
Percentage of ForeignCurrencyTransactionGainLossBeforeTax100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GainLossRelatedToLitigationSettlement



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312011-09-302011-06-302010-09-302010-06-30
Value4-4-25-9-2558-10-8-5-6-8-3-3-1-2-18-3-6-6-6-5-2-1-3-10
Percentage of GainLossRelatedToLitigationSettlement100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ImpairmentOfLongLivedAssetsToBeDisposedOf



Period End2019-12-31
Value80
Percentage of ImpairmentOfLongLivedAssetsToBeDisposedOf100.0

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-12-312010-03-312009-12-312009-03-31
Value-9150-58127-82-21-63103-173-78129192-137-5025106-7012-2266-91-2221-17-80-66-56-78-41-43-5-255
Percentage of IncreaseDecreaseInAccountsPayableAndAccruedLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInIncomeTaxes



Period End2020-03-312019-03-31
Value79-31
Percentage of IncreaseDecreaseInIncomeTaxes100.0100.0

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets



Period End2020-03-312019-12-312019-03-312018-12-31
Value2-1511
Percentage of IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInReceivables



Period End2020-03-312019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-12-312010-03-312009-12-312009-03-31
Value821077-117-461883-7835870-4264347-58151016-57-20471165559-3687501-54
Percentage of IncreaseDecreaseInReceivables100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value000000222033404420233
Percentage of IncrementalCommonSharesAttributableToShareBasedPaymentArrangements100.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AwardType

us-gaap:EmployeeStockOption



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value000000111022203320122
Percentage of IncrementalCommonSharesAttributableToShareBasedPaymentArrangements54.40.044.647.50.079.657.060.263.5104.072.474.573.038.771.567.171.8134.570.677.074.1

us-gaap:PerformanceShares



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value0.0135000.058000.00.0-60000.0404000.0564000.0396000.0-46000.0380000.0488000.0554000.0-14000.0458000.0425000.0399000.01000.0470000.0441000.0620000.0
Percentage of IncrementalCommonSharesAttributableToShareBasedPaymentArrangements0.015.27.80.019.116.820.915.026.111.312.813.6-45.210.39.313.9-1.116.913.915.5

us-gaap:RestrictedStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value000000000000000100000
Percentage of IncrementalCommonSharesAttributableToShareBasedPaymentArrangements45.60.040.244.80.01.326.218.921.5-30.116.412.813.4106.518.323.614.3-33.312.59.210.4

us-gaap:InterestAndOtherIncome



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-31
Value186610241311121011999151092742310711921101115111215911
Percentage of InterestAndOtherIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestPaidCapitalized



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value11211123331233212312112555096
Percentage of InterestPaidCapitalized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestPaidNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-12-312010-03-312009-12-312009-03-31
Value10860123601277311367105661237212079142100125571185811466100521011111141565715351161
Percentage of InterestPaidNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LossContingencyLossInPeriod



Period End2019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302016-12-312016-09-302016-06-30
Value0-68000205019050000
Percentage of LossContingencyLossInPeriod0.0100.00.00.00.0100.0100.0100.0100.00.00.00.0

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-120-10420
Percentage of OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax100.0100.00.0100.00.0100.0100.00.0

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value44-173252934444238199
Percentage of OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax



Period End2020-03-312019-03-31
Value16111
Percentage of OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax100.0100.0

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-427-61114-3815-16
Percentage of OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

wy:AccumulatedTranslationAdjustmentAndOther



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-427-61114-3815-16-15
Percentage of OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax

wy:AccumulatedPensionPlansDefinedBenefitPlansAdjustment



Period End2020-03-312019-03-31
Value20-24
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax100.0100.0

us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-312019-03-31
Value3358
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-31
Value319393584005118338-225424931-349233049101105614-536-19438-1545222841-24-3579435
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

wy:AccumulatedPensionPlansDefinedBenefitPlansAdjustment



Period End2020-03-312019-03-31
Value44343
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent1466.795.8

wy:AccumulatedTranslationAdjustmentAndOther



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-427-61114-3815-16-15
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent-1400.00.0-31.628.23.9-9.529.4-8.7-39.5

us-gaap:OtherCostAndExpenseOperating



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-06-302015-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-31
Value866871012238-1211321391748814280-10-820
Percentage of OtherCostAndExpenseOperating100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.00.0

us-gaap:OtherOperatingIncomeExpenseNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value-1034-32-13-36140-21-17-2813012-62-2-60-5613-2115-153823657421018285366-31917424270
Percentage of OtherOperatingIncomeExpenseNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForCapitalImprovements



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-31
Value211511131814111420151013231691816769189711141310
Percentage of PaymentsForCapitalImprovements100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForProceedsFromOtherInvestingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-312014-09-302013-03-312012-03-312011-03-312010-12-312010-03-312009-12-312009-03-31
Value-25-1-1-183410-24-3-1616-22139-4530-104-250-1-5-28727-8
Percentage of PaymentsForProceedsFromOtherInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsOfDividendsCommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value25425325325325425425624324224223323323323223122824115915914915215215412812912812810993
Percentage of PaymentsOfDividendsCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionAndOtherPostretirementBenefitContributions



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-31
Value1099131426323161619221522165412172420192016223033373519
Percentage of PensionAndOtherPostretirementBenefitContributions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionAndOtherPostretirementBenefitExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-12-312010-03-312009-12-312009-03-31
Value1929231847822727213425251532001410111110-48-13-44-4724-2824-2-1-29-15
Percentage of PensionAndOtherPostretirementBenefitExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromCollectionOfNotesReceivable



Period End2020-03-312019-03-31
Value362253
Percentage of ProceedsFromCollectionOfNotesReceivable100.0100.0

us-gaap:DebtInstrument

us-gaap:ProceedsFromDebtNetOfIssuanceCosts

wy:A400PercentDue2030



Period End2020-03-31
Value732
Percentage of ProceedsFromDebtNetOfIssuanceCosts100.0

us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:StatementGeographical

us-gaap:ProceedsFromDivestitureOfBusinesses

wy:LymeTimberCompanyLP, stpr:MI



Period End2019-11-13
Value297
Percentage of ProceedsFromDivestitureOfBusinesses100.0

us-gaap:ProceedsFromLinesOfCredit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value55022049014024542500000
Percentage of ProceedsFromLinesOfCredit100.0100.0100.0100.0100.0100.00.00.00.00.00.0

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-12-312010-03-312009-12-312009-03-31
Value-12-3-3-4-810-1-7162-10-49398-7-21-14-14-129-104-30-2
Percentage of ProceedsFromPaymentsForOtherFinancingActivities100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.00.0100.0

us-gaap:ProceedsFromRelatedPartyDebt



Period End2020-03-312019-06-302019-03-312018-06-302018-03-312015-06-302015-03-31
Value36202530000
Percentage of ProceedsFromRelatedPartyDebt100.00.0100.00.00.00.00.0

us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment



Period End2020-03-312019-03-31
Value1450
Percentage of ProceedsFromSaleOfPropertyPlantAndEquipment100.00.0

us-gaap:ProceedsFromStockOptionsExercised



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value6542204232539826551336845442135303915815341
Percentage of ProceedsFromStockOptionsExercised100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax

wy:AccumulatedPensionPlansDefinedBenefitPlansAdjustment



Period End2020-03-312019-03-31
Value-24-367
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax100.0100.0

us-gaap:RepaymentsOfLinesOfCredit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value23043019024542500002000
Percentage of RepaymentsOfLinesOfCredit100.0100.0100.0100.0100.00.00.00.00.0100.00.0

us-gaap:RepaymentsOfRelatedPartyDebt



Period End2019-12-312019-09-302018-12-31
Value0302209
Percentage of RepaymentsOfRelatedPartyDebt0.0100.0100.0

us-gaap:SellingExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-31
Value22222021212220232321222222222222273027282829282749565451494742
Percentage of SellingExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue

us-gaap:PerformanceShares



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-31
Value33.160.00.00.029.660.00.00.035.490.00.00.037.931.750.00.020.830.00.00.034.750.00.00.030.6228.75
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue100.00.00.00.0100.00.00.00.0100.00.00.00.0100.0100.00.00.0100.00.00.00.0100.00.00.00.0100.0100.0

us-gaap:RestrictedStock



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-03-31
Value30.030.0-0.079999999999998325.83-0.039999999999999150.034.140.00.032.790.00.023.090.00.035.410.0-0.01999999999999957430.1630.54
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue90.60.00.087.10.00.096.20.00.086.40.00.0110.80.00.0101.90.00.098.5106.2

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod

us-gaap:PerformanceShares



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-31
Value91000.00.00.00.0153000.00.00.02000.0110000.0-30000.00.018000.0142000.0-27780.00.020583.0268197.0153266.00.019477.0222257.094378.00.00.0216622.0157386.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod100.00.00.00.0100.00.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.00.0100.0100.0

us-gaap:RestrictedStock



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-03-31
Value693000.00.031000.0599000.00.019000.0576000.00.048000.0662000.037826.0181137.0947628.00.025163.0339413.00.05448.0427135.0442928.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod761.50.00.0391.50.0950.0523.60.0266.7466.20.0880.0353.30.0129.2152.70.00.0197.2281.4

us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised

us-gaap:AdditionalPaidInCapital



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value65322032224
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised100.0100.0100.0100.0100.00.0100.0100.0100.0

us-gaap:CommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value11001-1112
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised16.720.00.00.050.00.033.34.58.3

us-gaap:StockRepurchasedDuringPeriodShares



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302009-03-31
Value0002280
Percentage of StockRepurchasedDuringPeriodShares0.00.00.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:StockRepurchasedDuringPeriodValue

us-gaap:AdditionalPaidInCapital



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0000-577227900
Percentage of StockRepurchasedDuringPeriodValue0.00.00.00.0100.0100.0100.00.00.0

us-gaap:CommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0000-331200
Percentage of StockRepurchasedDuringPeriodValue0.00.00.00.05.34.24.30.00.0

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wy:AdjustmentsRelatedToNewAccountingPronouncement

us-gaap:RetainedEarnings



Period End2019-12-312019-09-302019-06-302018-12-312018-09-302018-06-30
Value0001-12
Percentage of AdjustmentsRelatedToNewAccountingPronouncement0.00.00.0100.0100.0100.0

us-gaap:StatementEquityComponents

wy:AdjustmentsRelatedToNewAccountingPronouncementAndOther

us-gaap:RetainedEarnings



Period End2020-03-312019-03-31
Value0-7
Percentage of AdjustmentsRelatedToNewAccountingPronouncementAndOther0.0100.0

wy:BasisofLandSold



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value621124334844462212332410146019131752110
Percentage of BasisofLandSold100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wy:DeferredIncomeTaxExpenseBenefitIncludingContinuingAndDiscontinuedOperations



Period End2020-03-312019-03-31
Value82123
Percentage of DeferredIncomeTaxExpenseBenefitIncludingContinuingAndDiscontinuedOperations100.0100.0

wy:IncomeLossBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-09-302012-06-302012-03-312011-09-302011-06-302011-03-31
Value-1310291-393-11424038229937410358181511751571202141208355250-19420324013010126660156
Percentage of IncomeLossBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0

wy:NetContributionToEarnings



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value23276193182-286-1733347439247020115828011522982751671392632452033041297440333298321267217187113152117249186176
Percentage of NetContributionToEarnings100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312014-03-312013-09-302013-03-312012-09-30
Value-43-59-54-36-530-194-42-38-92-25-17-30-66-9-18-643921-46-17
Percentage of NetContributionToEarnings-18.5-77.6-28.0-19.8185.31141.2-12.6-8.0-23.5-5.3-8.5-19.0-23.6-3.0-6.5-38.311.77.0-17.2-7.8

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Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312014-03-312013-09-302013-03-312012-09-30
Value275247218244375512484218188346307293231294277313234
Percentage of NetContributionToEarnings118.5128.0119.8-85.3112.6108.0123.5108.5119.0123.6103.0106.5138.388.393.0117.2107.8

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Period End2020-03-312019-03-31
Value3655
Percentage of NetContributionToEarnings15.5-19.2

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Period End2020-03-312019-03-312014-03-312013-09-302013-03-312012-09-30
Value10512016411810480
Percentage of NetContributionToEarnings45.3-42.049.239.639.036.9

us-gaap:OperatingSegments, wy:WoodProducts



Period End2020-03-312019-03-312014-03-312013-09-302013-03-312012-09-30
Value13469647917859
Percentage of NetContributionToEarnings57.8-24.119.226.566.727.2

wy:NonOperatingPensionAndOtherPostRetirementBenefitCostsCredits



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-9-21-15-10-470-218-17-13
Percentage of NonOperatingPensionAndOtherPostRetirementBenefitCostsCredits100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementGeographical

wy:NumberOfAcersOfTimberlandsAgreedToBeSold

stpr:MT



Period End2019-12-17
Value630000.0
Percentage of NumberOfAcersOfTimberlandsAgreedToBeSold100.0

wy:PaymentsForCapitalExpendituresOfPropertyPlantAndEquipment



Period End2020-03-312019-12-312019-03-312018-12-31
Value4712841130
Percentage of PaymentsForCapitalExpendituresOfPropertyPlantAndEquipment100.0100.0100.0100.0

us-gaap:StatementEquityComponents

wy:ReclassificationOfAccumulatedUnrealizedGainsOnAvailableForSaleSecuritiesAdoptionOfAccountingStandard

wy:AccumulatedTranslationAdjustmentAndOther



Period End2019-12-312019-09-302019-06-302018-12-312018-09-302018-06-30
Value000-1800
Percentage of ReclassificationOfAccumulatedUnrealizedGainsOnAvailableForSaleSecuritiesAdoptionOfAccountingStandard0.00.00.0100.00.00.0

wy:RepaymentsOfLongTermDebtExcludingRelatedPartyDebt



Period End2020-03-312019-12-312019-03-312018-12-31
Value005120
Percentage of RepaymentsOfLongTermDebtExcludingRelatedPartyDebt0.00.0100.00.0

us-gaap:AccrualForEnvironmentalLossContingencies



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312010-09-302009-12-31
Value616248343729303234292831
Percentage of AccrualForEnvironmentalLossContingencies100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedLiabilitiesCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value448530487510411490491543457645702585452691533590595549554576533587606597661742662
Percentage of AccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AdditionalPaidInCapitalCommonStock



Period End2020-03-312019-12-312019-09-302018-12-31
Value8159815281408172
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0100.0

us-gaap:AssetRetirementObligation



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value30293229344054636566
Percentage of AssetRetirementObligation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetsHeldForSaleNotPartOfDisposalGroupCurrent



Period End2020-03-312019-12-312019-09-302018-12-31
Value01402510
Percentage of AssetsHeldForSaleNotPartOfDisposalGroupCurrent0.0100.0100.00.0

us-gaap:BankOverdrafts



Period End2019-12-312018-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value0000022154745
Percentage of BankOverdrafts0.00.00.00.00.0100.0100.0100.0100.0

us-gaap:CommonStockValueOutstanding



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-31
Value933932931931931933936947946944941941939936935916948638639643648656657733731729728722683678676672672671671673674670670264264264
Percentage of CommonStockValueOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CompensatingBalanceAmount



Period End2019-12-312018-12-31
Value36
Percentage of CompensatingBalanceAmount100.0100.0

us-gaap:DebtInstrumentCarryingAmount



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value61445933600866284896489648964296
Percentage of DebtInstrumentCarryingAmount100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrument

us-gaap:DebtInstrumentFaceAmount

wy:A400PercentDue2030



Period End2020-03-31
Value750
Percentage of DebtInstrumentFaceAmount100.0

wy:A470PercentDue2021



Period End2020-03-31
Value569
Percentage of DebtInstrumentFaceAmount75.9

us-gaap:BusinessAcquisition

us-gaap:DebtInstrumentFairValue

wy:PlumCreek



Period End2019-12-312018-12-31
Value2739
Percentage of DebtInstrumentFairValue100.0100.0

us-gaap:DebtInstrumentUnamortizedDiscountPremiumNet



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value145555555
Percentage of DebtInstrumentUnamortizedDiscountPremiumNet100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxLiabilities



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value335354289425746833
Percentage of DeferredIncomeTaxLiabilities100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsGross



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value4653876207747369359661602144713131377
Percentage of DeferredTaxAssetsGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsNetNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value1477231331815711682442682402612872931222501540238003741368
Percentage of DeferredTaxAssetsNetNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.00.00.0100.0100.0100.0

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value281918255986144187169140191
Percentage of DeferredTaxAssetsOperatingLossCarryforwards100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsOther



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value10183152232203223310336371334371
Percentage of DeferredTaxAssetsOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxCreditCarryforwards



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value5351564656565959575755
Percentage of DeferredTaxAssetsTaxCreditCarryforwards100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsCompensatedAbsences



Period End2019-12-312018-12-312017-12-31
Value181819
Percentage of DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsCompensatedAbsences100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesOther



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value3741193170130165185186211253
Percentage of DeferredTaxLiabilitiesOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value224197154214496523538577610668776
Percentage of DeferredTaxLiabilitiesPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanAccumulatedBenefitObligation



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value4200520067006400610065005700640057005100
Percentage of DefinedBenefitPlanAccumulatedBenefitObligation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent

us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-31
Value47744527
Percentage of DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent100.0100.0100.0100.0

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate

country:CA, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2019-12-312018-12-31
Value0.030.037
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate100.0100.0

country:CA, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-31
Value0.0310.037
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate103.3100.0

country:US, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2019-12-312018-12-31
Value0.030.042
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate100.0113.5

country:US, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-31
Value0.0340.044
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate113.3118.9

us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanBenefitObligation

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-312015-12-31
Value151166200225240
Percentage of DefinedBenefitPlanBenefitObligation100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-312015-12-31
Value42605263679564696211
Percentage of DefinedBenefitPlanBenefitObligation2821.23170.53397.52875.12587.9

us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-31
Value475765
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-31
Value117611611902
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter2502.12036.82926.2

us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-31
Value141719
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-31
Value237272369
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths1692.91600.01942.1

us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-31
Value111415
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-31
Value237234376
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive2154.51671.42506.7

us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-31
Value121416
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-31
Value238232374
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour1983.31657.12337.5

us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-31
Value131517
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-31
Value236231374
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree1815.41540.02200.0

us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-31
Value131618
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-31
Value235233371
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo1807.71456.22061.1

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us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear

wy:CollectiveBargainingArrangement, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-31
Value567
Percentage of DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear100.0100.0100.0

us-gaap:RetirementPlanType

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-31
Value92319
Percentage of DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear180.0383.3271.4

us-gaap:StatementScenario, us-gaap:RetirementPlanName, us-gaap:RetirementPlanSponsorLocation

srt:ScenarioForecast, wy:NonQualifiedPensionPlansDefinedBenefit, country:US



Period End2020-12-31
Value17
Percentage of DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear0.0

srt:ScenarioForecast, wy:NonRegisteredPlans, country:CA



Period End2020-12-31
Value3
Percentage of DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear0.0

srt:ScenarioForecast, wy:RegisteredPensionPlans, country:CA



Period End2020-12-31
Value2
Percentage of DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear0.0

us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:DefinedBenefitPlanFairValueOfPlanAssets

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Period End2019-12-312018-12-312017-12-31
Value0262445
Percentage of DefinedBenefitPlanFairValueOfPlanAssets0.0100.0100.0

us-gaap:HedgeFunds, us-gaap:FairValueInputsLevel3



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value133104338833333225277124362284
Percentage of DefinedBenefitPlanFairValueOfPlanAssets0.01.12.20.00.00.00.00.00.00.0

us-gaap:PrivateEquityFunds, us-gaap:FairValueInputsLevel3



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value866510275126714221606159416491575
Percentage of DefinedBenefitPlanFairValueOfPlanAssets0.024.822.90.00.00.00.00.00.00.0

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Period End2019-12-312018-12-31
Value120275
Percentage of DefinedBenefitPlanFairValueOfPlanAssets0.0105.0

us-gaap:DefinedBenefitPlanCashAndCashEquivalents, us-gaap:FairValueInputsLevel2, wy:QualifiedAndRegisteredPlans, country:US



Period End2019-12-312018-12-31
Value012
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Period End2019-12-312018-12-31
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Period End2019-12-312018-12-31
Value0262
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Period End2019-12-31
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Period End2019-12-31
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Period End2019-12-31
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Period End2019-12-312018-12-31
Value133
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Period End2019-12-312018-12-31
Value8665
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Period End2019-12-312018-12-31
Value124275
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Period End2019-12-312018-12-31
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Period End2019-12-312018-12-31
Value99330
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Period End2019-12-312018-12-31
Value12601054
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Period End2019-12-312018-12-31
Value941426
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Period End2019-12-31
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Period End2019-12-31
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Period End2019-12-312018-12-31
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Period End2019-12-312018-12-31
Value120287
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Period End2019-12-312018-12-31
Value10277
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Period End2019-12-31
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Period End2019-12-312018-12-31
Value5311814
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Period End2019-12-312018-12-31
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Period End2019-12-312018-12-31
Value37184937
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Period End2019-12-312018-12-31
Value12601054
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Period End2019-12-312018-12-31
Value941426
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Period End2019-12-31
Value-176
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Period End2019-12-31
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Period End2019-12-312018-12-31
Value5181811
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Period End2019-12-312018-12-31
Value9421014
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Period End2019-12-312018-12-31
Value14602825
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Period End2019-12-31
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Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
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Period End2019-12-312018-12-31
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Period End2019-12-312018-12-31
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Period End2019-12-312018-12-312017-12-312016-12-312015-12-31
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Period End2019-12-312018-12-312017-12-312016-12-312015-12-31
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Period End2019-12-312018-12-312017-12-312016-12-31
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Period End2019-12-312018-12-312017-12-312016-12-31
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Period End2019-12-312018-12-31
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Period End2019-12-31
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Period End2019-12-312018-12-31
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Period End2019-12-312018-12-31
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Period End2019-12-312018-12-31
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Period End2019-12-312018-12-31
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Period End2019-12-312018-12-31
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Period End2019-12-312018-12-312017-12-312016-12-31
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Period End2019-12-312018-12-312017-12-312016-12-31
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Period End2019-12-312018-12-31
Value0.3390.215
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Period End2019-12-312018-12-31
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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value143188161157143192184223
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Value249814915716313714023241465810845725301412232523373410195
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Value20192116151116151917551218811281518142091215181517
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Value723369867041699567756345
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Period End2019-12-312018-12-31
Value59225694
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Period End2019-12-312018-12-312017-12-312016-12-312015-12-31
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Period End2019-12-312018-12-312017-12-312016-12-312015-12-31
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Period End2019-12-312018-12-312017-12-312016-12-31
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Period End2019-12-312018-12-312016-12-312015-12-312014-12-31
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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
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Percentage of PrepaidExpenseCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestrictedInvestmentsCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312013-12-312012-12-31
Value036236236236225325325325300184
Percentage of RestrictedInvestmentsCurrent0.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0

us-gaap:RestrictedInvestmentsNoncurrent



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value0000362362362362615615615615615615615615615615615615615615615615615615
Percentage of RestrictedInvestmentsNoncurrent0.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrument

us-gaap:SeniorNotes

wy:A400PercentDebenturesDue2029



Period End2019-12-312018-12-31
Value7500
Percentage of SeniorNotes100.00.0

wy:A7375PercentDebenturesDue2019



Period End2019-12-312018-12-31
Value0500
Percentage of SeniorNotes0.00.0

us-gaap:AwardType

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us-gaap:PerformanceShares



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value110000100
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestrictedStockUnitsRSU



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value111111111
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber170.5152.9157.0208.0162.4137.9140.4202.6553.8

us-gaap:AwardType

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us-gaap:PerformanceShares



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value33.9331.5230.8725.2331.4229.4626.8324.3827.3
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestrictedStockUnitsRSU



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value29.1531.4129.1226.4931.3728.0625.8322.2524.72
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue85.999.794.3105.099.895.296.391.390.5

us-gaap:ShareRepurchaseProgram

us-gaap:StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1

wy:TwentyNineteenRepurchaseProgram



Period End2019-12-31
Value440
Percentage of StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1100.0

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-03-312009-12-312008-12-312007-12-30
Value8177859987248801904690579281899188999045909092159180919094301028148694878492550275304585671436885683261175906427641134353419742054267479947364704461446164057405448478171
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-312007-12-302006-12-31
Value-904-736-755-794-1152-1552-1603-1786-1562-1459-1212-1393-686-1558-1179-791-664-49598798788
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-11.1-8.6-8.7-9.0-12.7-17.1-17.3-19.9-17.6-15.9-24.9-26.3-10.0-37.9-27.6-17.1-16.4-10.20.012.10.0

us-gaap:AdditionalPaidInCapital



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-312007-12-302006-12-31
Value815281408130812181728234849684668439828240804519644447314595455217861767160916093812
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest99.794.793.292.390.390.991.594.294.890.283.885.294.3115.0107.798.744.136.50.019.70.0

us-gaap:CommonStock



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-312007-12-302006-12-31
Value932931931931933936947946944936638656729678671670264264262262295
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest11.410.810.710.610.310.310.210.510.610.213.112.410.716.515.714.56.55.40.03.20.0

us-gaap:RetainedEarnings



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-312007-12-302006-12-31
Value-32644185431093143914411365107814211349150829421917618126583278501450144755
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-0.03.14.86.212.115.915.515.212.115.527.728.44.35.34.13.965.667.60.061.40.0

wy:AccumulatedOtherPostretirementBenefitPlansDefinedBenefitPlansAdjustment



Period End2019-12-312018-12-312017-12-312016-12-31
Value-12-19-25-38
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-0.1-0.2-0.3-0.4

wy:AccumulatedPensionPlansDefinedBenefitPlansAdjustment



Period End2019-12-312018-12-312017-12-312016-12-31
Value-1128-1343-1810-1660
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-13.8-14.8-20.3-18.1

wy:AccumulatedTranslationAdjustmentAndOther



Period End2019-12-312018-12-312017-12-312016-12-31
Value236210273239
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest2.92.33.12.6

us-gaap:IncomeTaxAuthority

us-gaap:TaxCreditCarryforwardAmount

us-gaap:StateAndLocalJurisdiction



Period End2019-12-312018-12-312017-12-312016-12-312015-12-31
Value6765707143
Percentage of TaxCreditCarryforwardAmount100.0100.0100.0100.0100.0

wy:DomestictaxauthorityREIT



Period End2019-12-312018-12-312017-12-31
Value766
Percentage of TaxCreditCarryforwardAmount10.49.28.6

us-gaap:IncomeTaxAuthority, us-gaap:TaxCreditCarryforward

us-gaap:StateAndLocalJurisdiction, wy:Withexpiration



Period End2019-12-312018-12-312017-12-312016-12-31
Value16142224
Percentage of TaxCreditCarryforwardAmount23.921.531.433.8

us-gaap:StateAndLocalJurisdiction, wy:WithoutExpiration



Period End2019-12-312018-12-312017-12-312016-12-31
Value51514847
Percentage of TaxCreditCarryforwardAmount76.178.568.666.2

us-gaap:UnamortizedDebtIssuanceExpense



Period End2019-12-312018-12-312017-12-312016-12-312015-12-31
Value109111316
Percentage of UnamortizedDebtIssuanceExpense100.0100.0100.0100.0100.0

wy:AccruedTaxesPayable



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value3224373228304043
Percentage of AccruedTaxesPayable100.0100.0100.0100.0100.0100.0100.0100.0

wy:ConstructionInProgress



Period End2020-03-312019-12-312019-09-302018-12-31
Value153130187136
Percentage of ConstructionInProgress100.0100.0100.0100.0

wy:CurrentPortionOfLeaseLiabilities



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value323334290
Percentage of CurrentPortionOfLeaseLiabilities100.0100.0100.0100.00.0

wy:CustomerRebatesVolumeDiscountsAndDeferredIncome



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value7310511311699
Percentage of CustomerRebatesVolumeDiscountsAndDeferredIncome100.0100.0100.0100.0100.0

wy:DeferralOfSharesInToDeferredCompensationPlan



Period End2019-12-312018-12-312017-12-31
Value788000.0788000.0804000.0
Percentage of DeferralOfSharesInToDeferredCompensationPlan100.0100.0100.0

wy:DeferredTaxAssetsDeferredTaxExpenseDepletion



Period End2019-12-312018-12-31
Value3441
Percentage of DeferredTaxAssetsDeferredTaxExpenseDepletion100.0100.0

wy:DeferredTaxAssetsDeferredTaxExpenseIncentiveCompensation



Period End2019-12-312018-12-31
Value1720
Percentage of DeferredTaxAssetsDeferredTaxExpenseIncentiveCompensation100.0100.0

wy:DeferredTaxAssetsExcessInterest



Period End2019-12-312018-12-31
Value5530
Percentage of DeferredTaxAssetsExcessInterest100.0100.0

wy:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensionAndPostretirementBenefits



Period End2019-12-312018-12-31
Value159112
Percentage of DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensionAndPostretirementBenefits100.0100.0

wy:DeferredTaxLiabilitiesTimberInstallmentNotes



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value74116116180180180180240277277286
Percentage of DeferredTaxLiabilitiesTimberInstallmentNotes100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanType

wy:DefinedBenefitPlanDerivativeNotionalAmount

us-gaap:DefinedBenefitPlanDerivative, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-31
Value8131644
Percentage of DefinedBenefitPlanDerivativeNotionalAmount100.0100.0

us-gaap:FinancialInstrument, us-gaap:RetirementPlanType

us-gaap:ForwardContracts, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-31
Value013
Percentage of DefinedBenefitPlanDerivativeNotionalAmount0.00.8

us-gaap:Future, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-31
Value8131073
Percentage of DefinedBenefitPlanDerivativeNotionalAmount100.065.3

us-gaap:Swap, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-31
Value0558
Percentage of DefinedBenefitPlanDerivativeNotionalAmount0.033.9

us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanName

wy:DefinedBenefitPlanWeightedAverageAssetAllocationsIncreaseDecrease

wy:DefinedBenefitPlanAccruedLiabilities, wy:QualifiedAndRegisteredPlans



Period End2019-12-312018-12-31
Value-0.002-0.003
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocationsIncreaseDecrease100.0100.0

wy:FixedIncomeInvestmentsRepurchaseAgreements, wy:QualifiedAndRegisteredPlans



Period End2019-12-312018-12-31
Value-0.0470.0
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocationsIncreaseDecrease2350.0-0.0

us-gaap:PublicUtilitiesInventory

wy:FIFOAndMovingAverageCostMethodsInventories

wy:InventoryOtherProducts



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value9998838383
Percentage of FIFOAndMovingAverageCostMethodsInventories100.0100.0100.0100.0100.0

wy:InventoryRawMaterialsandSupplies



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value9795969989
Percentage of FIFOAndMovingAverageCostMethodsInventories98.096.9115.7119.3107.2

wy:LogsAndChips



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value6928203335
Percentage of FIFOAndMovingAverageCostMethodsInventories69.728.624.139.842.2

wy:LumberPlywoodPanelsAndEngineeredLumber



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value92848610186
Percentage of FIFOAndMovingAverageCostMethodsInventories92.985.7103.6121.7103.6

wy:LeaseLiabilities



Period End2019-12-312019-09-302019-06-302019-01-01
Value156162167172
Percentage of LeaseLiabilities100.0100.0100.0100.0

wy:LeasedAssets



Period End2019-12-312019-09-302019-06-302019-01-01
Value148154159165
Percentage of LeasedAssets100.0100.0100.0100.0

wy:LongTermDebtExcludingLinesOfCreditCurrent



Period End2020-03-312019-12-312019-09-302018-12-31
Value57700500
Percentage of LongTermDebtExcludingLinesOfCreditCurrent100.00.00.0100.0

wy:MineralsAndMineralRights



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value278281284288294
Percentage of MineralsAndMineralRights100.0100.0100.0100.0100.0

wy:NetDeferredTaxAssetLiability



Period End2019-12-312018-12-31
Value66-28
Percentage of NetDeferredTaxAssetLiability100.0100.0

wy:NonRecourseDebtCurrent



Period End2019-12-312019-09-302019-06-302018-12-31
Value00302302
Percentage of NonRecourseDebtCurrent0.00.0100.0100.0

us-gaap:AwardType

wy:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsServicePeriodMetOutstanding

us-gaap:PerformanceShares



Period End2019-12-31
Value519000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsServicePeriodMetOutstanding100.0

us-gaap:RestrictedStockUnitsRSU



Period End2019-12-31
Value526000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsServicePeriodMetOutstanding101.3

wy:SuretyBonds



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value127123134125113231414418
Percentage of SuretyBonds100.0100.0100.0100.0100.0100.0100.0100.0

wy:TimberAndTimberLandsAtCostLessDepletion



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value1184711929121921251612671
Percentage of TimberAndTimberLandsAtCostLessDepletion100.0100.0100.0100.0100.0

Line plots across dimensions of each concept

us-gaap:Revenues us-gaap:ConsolidationItems


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


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


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us-gaap:Revenues us-gaap:StatementBusinessSegments


us-gaap:Assets us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments


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us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType


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us-gaap:StockholdersEquity us-gaap:StatementEquityComponents


us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument