WLK


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

Table of contents



us-gaap:CommonStockValue

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

us-gaap:CostOfGoodsAndServicesSold

us-gaap:GrossProfit

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeTaxExpenseBenefit
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:InterestExpense

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents

us-gaap:NonoperatingIncomeExpense
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingIncomeLoss
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OtherComprehensiveIncomeLossNetOfTax
us-gaap:StatementEquityComponents

us-gaap:ProfitLoss

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

us-gaap:SellingGeneralAndAdministrativeExpense

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:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:AccountsReceivableNetCurrent

us-gaap:ReceivablesNetCurrent

us-gaap:InventoryNet

us-gaap:PrepaidExpenseAndOtherAssetsCurrent

us-gaap:Land

us-gaap:MachineryAndEquipmentGross

us-gaap:PropertyPlantAndEquipmentGross

us-gaap:ConstructionInProgressGross

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AmortizationOfIntangibleAssets

us-gaap:PropertyPlantAndEquipmentNet
us-gaap:StatementGeographical
us-gaap:CounterpartyName, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures

us-gaap:Goodwill
us-gaap:StatementBusinessSegments

us-gaap:FiniteLivedIntangibleAssetsNet
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:OperatingLeaseRightOfUseAsset
us-gaap:RelatedPartyTransaction

us-gaap:AccountsPayableCurrent

us-gaap:AccruedLiabilitiesCurrent

us-gaap:LiabilitiesCurrent

us-gaap:LongTermDebtCurrent

us-gaap:NotesPayableCurrent

us-gaap:OperatingLeaseLiabilityCurrent

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

us-gaap:LongTermDebtNoncurrent

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:MinorityInterest

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:OperatingLeaseLiability

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents

us-gaap:CommonStockValue

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:TreasuryStockValue

us-gaap:MinorityInterest

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
us-gaap:StatementEquityComponents

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:DeferredIncomeTaxExpenseBenefit

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

us-gaap:IncreaseDecreaseInAccountsPayable

us-gaap:IncreaseDecreaseInInventories

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:ProfitLoss

us-gaap:ShareBasedCompensation

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:ProceedsFromIssuanceOfLongTermDebt

us-gaap:RepaymentsOfLongTermDebt

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxAssetsNet

us-gaap:DeferredTaxAssetsValuationAllowance

us-gaap:CommonStockDividendsPerShareDeclared
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrumentRedemptionPricePercentageOfPrincipalAmountRedeemed

us-gaap:DividendsCommonStockCash
us-gaap:StatementEquityComponents

us-gaap:EffectOfExchangeRateOnCashAndCashEquivalents
us-gaap:Range, us-gaap:EnvironmentalRemediationContingency, us-gaap:RegulatoryAgency
us-gaap:EnvironmentalExitCostsAnticipatedCost
us-gaap:Range
us-gaap:EnvironmentalExitCostsReasonablyPossibleAdditionalLoss
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:ExtinguishmentOfDebtAmount
us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType

us-gaap:GainLossOnDispositionOfAssets

us-gaap:GoodwillForeignCurrencyTranslationGainLoss
us-gaap:StatementBusinessSegments

us-gaap:IncreaseDecreaseInAccountsAndOtherReceivables

us-gaap:IncreaseDecreaseInAccruedLiabilities

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeLossTaxPortionAttributableToNoncontrollingInterest

us-gaap:OtherOperatingActivitiesCashFlowStatement

us-gaap:ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDiluted

us-gaap:PaymentsForProceedsFromOtherInvestingActivities

us-gaap:PaymentsOfDividendsMinorityInterest
us-gaap:BusinessAcquisition
us-gaap:PaymentsToAcquireBusinessesGross
us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType

us-gaap:PaymentsToAcquireInterestInSubsidiariesAndAffiliates

us-gaap:ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:ProceedsFromIssuanceOfDebt

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities

us-gaap:ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess

us-gaap:RestructuringCharges

us-gaap:RestructuringCostsAndAssetImpairmentCharges

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation
us-gaap:StatementEquityComponents

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment

wlk:CARESActTaxBenefit

wlk:IncreaseDecreaseinCapitalExpenditureAccrual

wlk:NetIncomeLossAvailableToCommonStockholders

wlk:NoncontrollingInterestIncreaseFromConsolidatingPreviouslyUnconsolidatedSubsidiary
us-gaap:StatementEquityComponents

wlk:PaymentsToAcquireAdditionalInterestsInSubsidiariesAndProceedsFromEquityMethodInvestmentDistributionReturnOfCapital

wlk:RestructuringTransactionandIntegrationCost

us-gaap:AccountsPayableRelatedPartiesCurrent
us-gaap:CounterpartyName, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:AccountsPayableRelatedPartiesCurrentAndNoncurrent

us-gaap:AccountsPayableTradeCurrent

us-gaap:AccountsReceivableGrossCurrent

us-gaap:AccountsReceivableRelatedPartiesCurrent
us-gaap:CounterpartyName, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:RetirementPlanType
us-gaap:AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent
us-gaap:MeasurementInputType, us-gaap:StatementBusinessSegments, us-gaap:ValuationTechnique
us-gaap:AlternativeInvestmentMeasurementInput
us-gaap:Range, us-gaap:MeasurementInputType, us-gaap:StatementBusinessSegments, us-gaap:ValuationTechnique

us-gaap:AssetRetirementObligationCurrent

us-gaap:AssetRetirementObligationsNoncurrent

us-gaap:BuildingsAndImprovementsGross
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationContingentConsiderationLiability
us-gaap:CounterpartyName
us-gaap:ContractWithCustomerLiability

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

us-gaap:DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet
us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:DeferredCostsAndOtherAssets

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsInventory

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsTaxCreditCarryforwards

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities

us-gaap:DeferredTaxLiabilitiesDeferredExpenseOtherCapitalizedCosts

us-gaap:DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DeferredTaxLiabilitiesOtherFiniteLivedAssets

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment
us-gaap:RetirementPlanFundingStatus, us-gaap:RetirementPlanSponsorLocation
us-gaap:DefinedBenefitPlanAccumulatedBenefitObligation
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax
us-gaap:RetirementPlanSponsorLocation
us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:RetirementPlanSponsorLocation
us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanBenefitObligation

us-gaap:DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear
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:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanFundedStatusOfPlan
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear
us-gaap:RetirementPlanFundingStatus, us-gaap:RetirementPlanSponsorLocation
us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation
us-gaap:FinancialInstrument
us-gaap:DefinedBenefitPlanPlanAssetsTargetAllocationPercentage
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanUltimateHealthCareCostTrendRate1
us-gaap:CounterpartyName, us-gaap:RelatedPartyTransaction, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:DueToAffiliateCurrentAndNoncurrent
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:RelatedPartyTransaction, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:DueToRelatedPartiesCurrent
us-gaap:AwardType
us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized

us-gaap:EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity
us-gaap:CounterpartyName, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:EquityMethodInvestmentOwnershipPercentage

us-gaap:EquityMethodInvestments
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:FiniteLivedCustomerRelationshipsGross
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:FiniteLivedIntangibleAssetsGross
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:FiniteLivedLicenseAgreementsGross
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:FiniteLivedTrademarksGross

us-gaap:HeldToMaturitySecurities

us-gaap:IncomeTaxesReceivable

us-gaap:InventoryFinishedGoodsNetOfReserves

us-gaap:InventorySuppliesNetOfReserves

us-gaap:InventoryWorkInProcessAndRawMaterialsNetOfReserves
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:InvestmentsInAndAdvancesToAffiliatesAtFairValue

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths
us-gaap:CreditFacility, us-gaap:DebtInstrument
us-gaap:LineOfCreditFacilityRemainingBorrowingCapacity
us-gaap:DebtInstrument, us-gaap:FairValueByMeasurementBasis, us-gaap:LongtermDebtType
us-gaap:LongTermDebtFairValue

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo

us-gaap:LongtermDebtWeightedAverageInterestRate

us-gaap:LossContingencyAccrualAtCarryingValue

us-gaap:NotesAndLoansPayableCurrent
us-gaap:IncomeTaxAuthority
us-gaap:OperatingLossCarryforwards
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:OtherFiniteLivedIntangibleAssetsGross

us-gaap:OtherIntangibleAssetsNet

us-gaap:OtherReceivablesNetCurrent
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent

us-gaap:PropertyPlantAndEquipmentOther

us-gaap:RestrictedCashAndCashEquivalents
us-gaap:CounterpartyName
us-gaap:RevenueRemainingPerformanceObligation
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1
us-gaap:IncomeTaxAuthority
us-gaap:TaxCreditCarryforwardAmount

us-gaap:UnamortizedDebtIssuanceExpense

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnFifthAnniversary

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnFourthAnniversary

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount

us-gaap:UnrecordedUnconditionalPurchaseObligationDueAfterFiveYears

wlk:AccruedRebatesCurrent

wlk:DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostNetExcludingCurrentMaturities

wlk:DebtInstrumentUnamortizedDiscountpremiumandDebtIssuanceCostNetExcludingCurrentMaturities

wlk:DeferredTaxAssetsOperatingLeaseLiabilities

wlk:DeferredTaxLiabilitiesOperatingLeaseRightofUseAssets

wlk:DeferredTaxLiabilitiesParentsBasisInConsolidatedPartnerships
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
wlk:DefinedBenefitPlanDefinedBenefitObligationUltimateHealthCareCostTrendRate
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
wlk:LongTermDebtGrossCurrentMaturities

wlk:LongTermDebtGrossExcludingCurrentMaturities

wlk:LongtermDebtGrossExcludingCurrentMaturities

wlk:PropertyPlantAndEquipmentNetExcludingConstructionInProgress

wlk:TreasuryStockPurchasePriceRepurchaseProgram

Plots across concepts


IncomeStatement
Other Comprehensive Income Loss Net Of Tax
Expenses
Interest Expense
Balance Sheet
Finite Lived Intangible Assets Net
Assets
Operating Lease Right Of Use Asset
Current Assets
Prepaid Expense And Other Assets Current
NonCurrent Assets
Finite Lived Intangible Assets Net
PropertyPlantAndEquipmentNet
Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
Liabilities
Operating Lease Liability
Current Liabilities
Long Term Debt Current
Noncurrent Liabilities
Other Liabilities Noncurrent
Stockholders Equity
Accumulated Other Comprehensive Income Loss Net Of Tax
Per Share
Common Stock Dividends Per Share Declared
CashFlow
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInOperatingActivities
Share Based Compensation
NetCashProvidedByUsedInInvestingActivities
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInFinancingActivities
Net Cash Provided By Used In Financing Activities
DividendsAndRepurchase
Payments For Repurchase Of Common Stock
OperatingLeaseLiability
Operating Lease Liability Current
NonoperatingIncomeExpense
Nonoperating Income Expense
LesseeOperatingLeaseLiabilityPaymentsDue
Lessee Operating Lease Liability Payments Due Year Four
InventoryNet
Inventory Finished Goods Net Of Reserves
AccountsReceivable
Allowance For Doubtful Accounts Receivable Current

Tables

  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:CommonStockValue ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄███████████████▁▁▁▁▁▁▁▁▁▁▁1.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.3471.3471.3471.3471.3471.3471.3471.3471.3471.3471.3471.3471.3471.3471.3470.6730.6730.6730.6720.6720.670.6690.6670.6660.6660.666NA0.663NANANA
us-gaap:EarningsPerShareBasic ▆▃▂▁▁▂▂▂▂▂▂▄▃▃█▃▂▂▂▁▂▂▂▂▃▂▂▂▂▂▄▄▃▃▃▂▃▂▁▂▂▂▂▂▂▁4.061.880.870.450.111.130.561.220.920.560.952.362.132.216.181.621.181.070.760.510.850.940.851.391.551.11.381.261.271.182.562.552.181.841.431.31.731.320.41.021.221.261.270.950.860.27
us-gaap:EarningsPerShareDiluted ▆▃▂▁▁▂▂▂▂▂▂▄▃▃█▃▂▂▂▁▂▂▂▂▃▂▂▂▂▂▄▄▃▃▃▂▃▂▁▂▂▂▂▂▂▁4.041.870.870.450.111.130.561.220.920.550.952.352.122.26.151.611.171.060.760.510.850.940.841.391.541.11.371.251.261.182.542.542.171.841.421.31.721.310.41.011.211.251.260.950.860.27
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
 Operating Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,wlk:Olefins█▅▁▁▁▂▂▃▄▃▄▅▄▄▅▄▄▅▃▄▄▃▃▆▇671.0537.0375.0369.0361.0427.0398.0448.0477.0459.0493.0541.0482.0503.0517.0502.0489.234542.995471.131497.365494.484431.02467.948588.097620.878NANANANANANANANANANANANANANANANANANANANANA
 Operating Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,wlk:Vinyls█▆▅▅▄▅▅▆▆▅▅▆▆▆▅▆▅▅▄▂▁▁▁▁▁2188.01820.01590.01529.01348.01505.01485.01618.01667.01566.01502.01714.01753.01647.01493.01607.01489.9271399.6211264.593781.663591.577544.167518.482599.94564.124NANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
 TTM Greenblatt ROC _ _█▄▂▁▁▂▂▃▃▂▃▅▅▅▄▄▃▃▂▁▂▃▂▃▄▃▄▄▃▃▃▃▃▃▂▂▂▂▁▂▂▂▂720.0346.0178.079.036.0136.0102.0226.0194.0134.0207.0396.0404.0401.0365.0365.747267.116235.298152.67746.563179.938202.276181.145254.028295.374229.28302.387306.761266.788248.055257.58266.602235.227194.055156.231142.517170.978145.62550.459117.331138.369140.637137.052NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:ComprehensiveIncomeNetOfTax ▅▃▂▁▁▂▁▂▂▁▁▄▃▃█▃▃▂▁▁▂▂▂▂▃▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁536.0236.0118.075.034.0113.064.0142.0133.070.072.0317.0242.0283.0818.65254.4203.09155.8685.76539.637119.686161.757103.542181.663222.83388.113140.291131.456171.093158.866179.277171.095145.122123.15592.688.66697.5105.01930.94860.50381.12684.352NANANANA
us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest ▆▄▅▅▄▅▆▃▄▄▃▄▃▅█▂▃▃▃▂▂▃▃▂▃▂▂▂▁▁▁▁15.010.012.013.010.012.015.08.09.010.08.010.06.012.022.7124.6286.146.526.3444.3524.4965.8085.1884.8164.9664.0654.0942.3990.00.00.00.0NANANANANANANANANANANANANANA
us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest ▅▃▂▁▁▂▁▂▂▁▁▃▃▃█▃▂▂▁▁▂▂▂▂▃▁▂▂▂▂▂▂551.0246.0130.088.044.0125.079.0150.0142.080.080.0327.0248.0295.0841.362259.028209.23162.3892.10943.989124.182167.565108.73186.479227.79992.178144.385133.855171.093158.866179.277171.095NANANANANANANANANANANANANANA
us-gaap:CostOfGoodsAndServicesSold █▆▃▃▁▃▃▄▅▄▃▄▄▂▁▂1987.01848.01642.01650.01540.01649.01633.01695.01804.01726.01641.01716.01683.01608.01514.01613.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:GrossProfit █▅▃▃▂▃▃▄▃▃▄▅▅▅▅▅▄▄▃▂▃▃▃▃▄▃▄▄▃▃▃▃▃▂▂▂▂▂▁▂▂▂▂▂▂▁872.0509.0323.0248.0169.0283.0250.0371.0340.0299.0354.0539.0552.0542.0498.0498.052405.834367.143281.478202.133241.366255.585236.188311.276353.181284.546362.849361.52305.971287.01295.671304.471273.487227.809190.248172.179201.896172.63777.26147.067167.095167.584164.124134.855126.02457.68
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest █▄▃▁▁▂▂▃▃▂▃▅▅▅▄▄▃▃▂▂▃▃▃▃▄▃▄▄▄▃694.0325.0156.054.05.0116.073.0216.0168.0113.0176.0391.0381.0386.0325.032327.769227.606200.593114.47763.462182.204198.236177.729248.453308.474228.785286.056294.605261.85241.407NANANANANANANANANANANANANANANANA
us-gaap:IncomeTaxExpenseBenefit █▇▇▆▆▆▆▇▇▇▇▇▇▇▁▇▇▇▆▆▇▇▇▇▇▇▇█▇▇▇▇▇▇▇▇▇▇▆▇▇▇▇▇▇158.072.033.0-15.0-19.0-41.0-12.050.039.031.045.073.093.089.0-490.69108.61968.18855.8839.188-6.55266.58469.361.57260.03398.41378.37898.671124.44992.40783.37587.192.72883.97367.94653.43138.23660.96546.98212.80538.13146.1545.3844.61334.23533.631NA
us-gaap:InterestExpense ▇▆▆▇█▆▇▆▅▆▆▅▆▇██▇██▅▁▂▂▂▂▂▂▂▂▂▁▁▁▂▂▃▂▃▃▃▃▃▂▂▂36.033.034.037.040.031.035.031.028.030.030.028.031.037.040.21640.03638.97239.77642.50724.3665.9156.6857.8968.2118.9589.5919.179.4869.5399.1573.1613.2975.3436.2817.36711.93411.57112.17712.54312.72712.80212.9211.30111.0028.784NA
us-gaap:NetIncomeLoss ▆▃▂▁▁▂▂▂▂▂▂▄▃▃█▃▂▂▂▁▂▂▂▂▃▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▂▂▂▁▁▁522.0242.0113.057.015.0145.072.0158.0119.072.0123.0308.0278.0287.0802.0210.832152.827138.1998.94565.662111.124123.128110.969183.604205.095146.342183.291167.757169.443158.032170.972170.29145.816123.34795.27786.964115.50187.81326.44367.9381.04983.54484.07362.73156.94217.647
us-gaap:NetIncomeLossAttributableToNoncontrollingInterest █▆▆▇▆▇█▅▆▆▅▆▆▆█▅▄▄▄▃▃▄▄▃▃▃▃▂▁▁▁▁14.011.010.012.09.012.013.08.010.010.08.010.010.010.013.5718.3186.5916.526.3444.3524.4965.8085.1884.8164.9664.0654.0942.3990.00.00.00.0NANANANANANANANANANANANANANA
us-gaap:NonoperatingIncomeExpense ▃▄▄▄▃▄▃▅▂▃▂▅▃▅▂▂▂▃▃█▃▂▃▂▅▃▁▂▃▂▃▂▂▃▂▂▂▂▂▂▂▂10.012.012.012.09.011.06.021.02.09.0-1.023.08.022.00.4092.058-0.5385.0714.30741.2658.1812.6454.482.63622.0589.096-7.161-2.674.6012.5093.653-0.287-0.0953.519-0.1561.2221.1071.3471.3321.4571.6321.207NANANANA
us-gaap:OperatingIncomeLoss █▄▂▁▁▂▂▃▃▂▃▅▅▅▄▄▃▃▂▁▂▃▂▃▄▃▄▄▃▃▃▃▃▃▂▂▂▂▁▂▂▂▂▂▂▁720.0346.0178.079.036.0136.0102.0226.0194.0134.0207.0396.0404.0401.0365.0365.747267.116235.298152.67746.563179.938202.276181.145254.028295.374229.28302.387306.761266.788248.055257.58266.602235.227194.055156.231142.517170.978145.62550.459117.331138.369140.637137.052107.34699.53734.429
us-gaap:OtherComprehensiveIncomeLossNetOfTax ▆▄▅▆▆▃▄▄▆▅▁▅▂▅▆▇█▆▄▃▅▇▄▅▆▁▂▂▅▅▅▅▅▅15.0-7.07.019.020.0-32.0-6.0-16.013.0-2.0-51.09.0-40.0-2.025.6439.87849.81217.67-13.18-26.0258.56238.629-7.427-1.94117.738-58.229-43.0-36.3011.650.8348.3050.805-0.886-0.192NANANANANANANANANANANANA
us-gaap:ProfitLoss ▆▃▂▁▁▂▂▂▂▂▂▄▃▃█▃▂▂▂▁▂▂▂▂▃▂▂▂▂▂▂▂536.0253.0123.069.024.0157.085.0166.0129.082.0131.0318.0288.0297.0816.0219.15159.418144.71105.28970.014115.62128.936116.157188.42210.061150.407187.385170.156169.443158.032170.972170.29NANANANANANANANANANANANANANA
us-gaap:Revenues █▆▅▅▄▅▅▅▆▅▅▆▆▆▅▅▅▅▄▃▂▂▂▂▂▂▂▃▂▂▂▂▂▁▁▁▁▂▁▂▁▁▁▁▁▁2859.02357.01965.01898.01709.01932.01883.02066.02144.02025.01995.02255.02235.02150.02010.02109.01979.01943.01735.181279.0281086.061975.187986.7661188.0371185.0021103.5311135.8711253.227998.5761027.676951.6251004.165939.047864.647801.041821.175913.9581034.867859.175968.372925.049867.252795.387779.677818.389778.334
us-gaap:SellingGeneralAndAdministrativeExpense ▇█▇▆▆▇▇▆▇▇▆▇▇▆▁▇█▇▇▄▄▃▃▃▃▃▃▃▂▂▂▂▂▂▂▂▂▁▁▂▂▁▁▂▁125.0136.0117.0108.0104.0120.0115.0110.0117.0116.0108.0114.0115.0108.019.081125.642130.626123.651115.67972.72961.42853.30955.04357.24857.80755.26660.46254.75939.18338.95538.09137.86938.2633.75434.01729.66230.91827.01226.80129.73628.72626.94727.07227.50926.487NA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:Assets ██▇▇▇█▇▇▆▆▆▆▆▆▆▆▆▆▆▆▃▃▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁14719.014050.013835.013694.013555.014163.013261.013107.012216.012104.011602.011721.011346.011604.012076.011244.12510885.70710724.8310890.25310897.0495920.5645724.4015575.2525524.4055411.015179.7855213.995126.2834369.3694171.9564060.9093923.4493708.3353559.2253412.1963544.1743441.9383330.0473266.8213207.1793147.8NA2954.144NANANA
us-gaap:Liabilities █▇▇▇▇█▇▇▆▆▆▆▆▆▇▇▇▇▇▇▂▂▂▂▂▁▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁7380.07225.07257.07206.07118.07725.06858.06745.05957.05919.05526.05633.05500.05963.06707.06692.6266676.6646691.9986998.2087072.9122183.1282019.9992013.3212004.5671993.8351909.0432012.1022003.9351641.2961603.3841642.3061658.3921595.8491569.4341539.941510.7461489.6271467.0171510.5091478.0561473.972NA1449.074NANANA
us-gaap:LiabilitiesAndStockholdersEquity ██▇▇▇█▇▇▆▆▆▆▆▆▆▆▆▆▆▆▃▃▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁14719.014050.013835.013694.013555.014163.013261.013107.012216.012104.011602.011721.011346.011604.012076.011244.12510885.70710724.8310890.25310897.0495920.5645724.4015575.2525524.4055411.015179.7855213.995126.2834369.3694171.9564060.9093923.4493708.3353559.2253412.1963544.1743441.9383330.0473266.8213207.1793147.8NA2954.144NANANA
us-gaap:StockholdersEquity █▇▇▇▇▇▇▇▇▆▆▆▆▆▅▄▄▄▄▃▃▃▃▃▃▃▃▃▂▂▂▂▂▁▁▁▁▁▁▁▁6771.06261.06043.05949.05901.05893.05860.05824.05719.05632.05590.05602.05362.05141.04874.04068.7743840.8373659.1963523.6293457.7283439.1633406.5263265.8783224.9993123.3882979.8582911.5112833.8612728.0732568.5722418.6032265.0572112.4861989.7911872.2562033.4281952.3111863.031756.3121729.1231673.828NA1505.07NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:AssetsCurrent █▆▆▅▅▆▄▆▃▄▄▄▄▄▆▄▃▃▃▃▂▂▂▃▂▂▂▂▂▁▁▁▁▁▁▂▂▁▁▁▁4445.03734.03477.03381.03165.03768.02742.03482.02595.02627.02842.03004.02694.02959.03463.02699.5332377.6352251.2882408.3162419.7442190.0412191.7342175.1892248.432166.242002.1622011.2871951.9481822.5031687.2631649.0821642.8511601.1231725.2781751.4131997.8051970.771795.8761756.1561716.2531688.529NA1475.96NANANA
us-gaap:CashAndCashEquivalentsAtCarryingValue █▆▆▅▅▇▃▆▂▂▃▃▂▄▇▃▁▁▂▁▃▂▃▄▄▄▄▃▄▂▂▂▃▃▃▅▅▄▃▃▃▃▃▂▁1844.01393.01313.01217.01109.01537.0728.01437.0409.0445.0753.0788.0482.0851.01531.0678.233395.776372.591459.453380.519770.997614.976662.525961.9251026.569945.649880.601813.468876.067532.643461.301591.556625.501777.887790.0781198.4681110.538895.142825.901758.939712.322654.503630.299428.333288.805NA
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents █▆▅▅▄▆▃▆▁▁▃▃▁▃▆▂▁▁▂1879.01430.01337.01240.01130.01559.0750.01459.0431.0467.0775.0811.0505.0874.01554.0710.0428.0405.0646.0NANANA663.0NANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:AccountsReceivableNetCurrent █▆▅▄▄▅▄▅▆▅▄▆▆▅▄▅▅▄▃▄▁1476.01249.01078.0957.0916.0989.0938.01037.01136.01038.0952.01158.01186.01105.0961.01097.2031020.563942.664809.73908.177493.156NA424.443NANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:ReceivablesNetCurrent █▇▆▆▆▆▅▅▆▅▅▆▆▅▅▆▅▅▄▅▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁1549.01327.01214.01293.01160.01265.01036.01094.01213.01121.01037.01241.01261.01135.01001.01142.9791095.8081003.966938.7431070.501582.855549.037508.532520.96600.722527.127560.666592.964454.281421.879428.457433.025475.638407.58400.159393.592418.0444.609407.372462.47430.301NA362.863NANANA
us-gaap:InventoryNet ▇▇▇▆▆▇▇▇▇██▇▇▇▇▆▆▆▆▅▂▂▂▂▂▂▃▂▂▂▂▂▂▁▁▁▁▂▂▂▂965.0955.0918.0829.0845.0934.0936.0906.0925.01021.01014.0939.0905.0944.0900.0834.835831.7821.708801.1744.536448.526478.656434.06430.006486.297480.38525.776500.552437.519439.009471.879451.571427.139408.074399.298371.537407.124422.405490.777466.248508.198NA450.028NANANA
us-gaap:PrepaidExpenseAndOtherAssetsCurrent █▅▃▄▅▃▄▄▄▄▃▃▄▃▃▃▄▄▄▅▃▂▁▂▂▂▁▂▂▁▁▂▂▁▁▁▁▁▁▁▂87.059.032.042.051.032.042.045.048.040.038.036.046.029.030.034.8645.74443.69548.49354.86835.64224.05714.48918.27223.01818.01811.80718.88420.46815.8813.88818.80920.77314.53614.714.47215.41514.10612.49511.44320.41NA15.482NANANA
us-gaap:Land NANA207.0NANANA198.0NANANA193.0NANANA198.0NANANA194.137NANANA33.051NANANA21.211NANANA18.576NANANA13.963NANANA13.509NANANA12.897NANANA
us-gaap:MachineryAndEquipmentGross NANA8687.0NANANA8227.0NANANA7568.0NANANA7281.0NANANA6913.721NANANA3632.416NANANA3454.462NANANA2829.049NANANA2131.933NANANA2039.05NANANA1963.186NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:PropertyPlantAndEquipmentGross NANA10103.0NANANA9529.0NANANA8742.0NANANA8362.0NANANA7950.0NANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:ConstructionInProgressGross NANA527.0NANANA551.0NANANA573.0NANANA388.0NANANA389.397NANANA515.812NANANA355.407NANANA265.259NANANA351.783NANANA93.961NANANA29.921NANANA
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment NANA3710.0NANANA3168.0NANANA2720.0NANANA2338.0NANANA1919.229NANANA1685.255NANANA1531.331NANANA1379.255NANANA1287.05NANANA1196.845NANANA1098.792NANANA
us-gaap:AmortizationOfIntangibleAssets ▄▄▆▄▄▄▆▄▄▄▃▁▂▃▃▄█▂27.027.028.027.027.027.028.027.027.027.026.024.025.026.026.027.030.025.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:PropertyPlantAndEquipmentNet ████████████▇▇▇▇▇▇▇▇▄▃▃▃▃▃▃▃▂▂▂▂▂▂▁▁▁▁▁▁▁6919.06921.06920.06853.06887.06883.06912.06842.06832.06720.06595.06519.06468.06447.06412.06343.6376316.7316392.7456420.0626450.9473230.5233114.8213004.0672916.632855.5082751.4862757.5572710.4752217.0492150.6432088.0141952.9181785.5741629.3091510.0481394.1981309.7521263.5561232.0661195.5081179.698NA1170.334NANANA
 us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures us-gaap:CounterpartyName,us-gaap:RelatedPartyTransactionsByRelatedParty wlk:CypressInterstatePipelineLLC,us-gaap:CorporateJointVentureNANA7.0NANANA8.0NANANA8.0NANANA9.0NANANA9.098NANANA9.208NANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures us-gaap:CounterpartyName,us-gaap:RelatedPartyTransactionsByRelatedParty wlk:RSCogenLLC,srt:AffiliatedEntityNANA26.0NANANA9.0NANANA5.0NANANA10.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures us-gaap:CounterpartyName,us-gaap:RelatedPartyTransactionsByRelatedParty wlk:YNCORISGmbHCo.KG,srt:AffiliatedEntityNANA64.0NANANA57.0NANANA57.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:Goodwill ████▇▇█▇█▆▄▅▅▅▅▅▄▂▂▁1085.01082.01083.01075.01070.01065.01074.01069.01079.01047.01002.01008.01006.01010.01012.01011.342999.614950.681946.553925.7NANA62.016NANANA62.016NANANA62.01662.01661.261NA29.99NANANA29.99NANANA29.99NANANA
us-gaap:FiniteLivedIntangibleAssetsNet ▁▂▂▃▃▄▄▅▅▆▄▅▆▆▇██▆▇399.0419.0444.0461.0479.0497.0523.0541.0559.0563.0525.0550.0569.0594.0616.0635.884654.092596.641611.615NANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OperatingLeaseRightOfUseAsset █████▇█▇▇▇▁452.0467.0461.0460.0462.0432.0443.0417.0381.0400.00.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:AccountsPayableCurrent █▆▄▁▁▁▂▃▄▄▃▇▅▆▆▅667.0603.0536.0447.0444.0431.0473.0496.0521.0548.0507.0626.0582.0596.0600.0560.804NANA496.259NANANA235.329NANA247.493261.062263.365219.6211.952249.613258.067247.007232.061217.05199.438208.309197.449227.034196.393223.666NA204.774NANANA
us-gaap:AccruedLiabilitiesCurrent █▇██▆▆▇▇▇▇▇▇▆▆▆▆▄▄▅▅▃▂▃▃▂▂▃▃▂▁▁▂▁▂▂▂▁▁▁▁▁818.0723.0821.0771.0665.0593.0768.0742.0733.0678.0676.0675.0604.0596.0657.0609.472447.412400.31537.483552.581312.985248.777287.313290.115251.68205.714276.118309.671167.329147.982155.245174.619147.449167.754181.46163.369129.768114.514137.561135.169105.966NA118.804NANANA
us-gaap:LiabilitiesCurrent ▆▅▅▅▄▄▅▅▅▅▅▅▅▇█▅▄▄▅▅▂▂▂▂▂▂▂▂▁▁▁▂▁▁▁▁▁▁▁▁▁1485.01326.01357.01218.01109.01024.01241.01238.01254.01226.01183.01301.01186.01653.01967.01170.2761030.921943.4311183.0831204.65620.101506.161522.642534.887534.658453.207537.18573.036386.929359.934404.858432.686394.456399.815398.51362.807338.077311.963364.595331.562329.632NA323.578NANANA
us-gaap:LongTermDebtCurrent ▁█20.021.0NANANANANANANANA0.00.00.0461.0710.0NANANA0.0NANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:NotesPayableCurrent NANA7.01.03.01.026.017.026.022.01.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OperatingLeaseLiabilityCurrent ▁▁▁▇█▅▇▅▄▇89.089.089.093.094.092.093.092.091.093.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:LongTermDebt ▆▆▆▇▇█▆▆▅▅▅▅▅▆▇▆▆▆▇▇▁3575.03568.03566.03681.03745.04432.03445.03424.02669.02669.02668.02667.02666.03127.03837.03349.4023489.93601.6423678.6543680.585758.453NA758.148NANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LongTermDebtNoncurrent ▅▄▅▅▅█▄▄▁▁▁▁▁▁▃3555.03547.03566.03681.03745.04432.03445.03424.02669.02669.02668.02667.02666.02666.03127.0NANANA3678.654NANANA764.115764.086764.056764.027763.997763.968763.938763.909763.879763.849763.82763.79763.761763.731764.604764.583764.563764.543764.522NA764.482NANANA
us-gaap:DeferredIncomeTaxLiabilitiesNet █▇▆█▆▇▁1396.01385.01368.01403.01354.01386.01255.0NANANA1159.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent ▇▇▇▆▆▆▆▆▆▆▆▅▆▆▆▇▇▆▇█▁▁▁▁▁▁▂373.0378.0391.0350.0350.0352.0360.0328.0334.0336.0337.0303.0332.0342.0344.0367.705366.916362.608364.819434.067105.554107.413106.25127.235126.708123.207136.296NANANA8.71NANANANANANANANANANANANANANANA
us-gaap:MinorityInterest ██▇▇▇▇▇▇▇█▆▆▆▆▆▆▃▃▃▃▁▁▁▁▁▁▁▁568.0564.0535.0539.0536.0545.0543.0538.0540.0553.0486.0486.0484.0500.0495.0482.725368.206373.636368.416366.409298.273297.876296.053294.839293.787290.884290.377288.487NANA0.0NANANANANANANANANANANANANANANA
us-gaap:OtherLiabilitiesNoncurrent ███▇▇▇███▇▇▇▆▇▆▆▅▅▅▆▅▆▆▇▆▆▇▆▁▁▁▂▂▂▂▂▂▂▂▂▂202.0206.0199.0181.0188.0185.0202.0195.0200.0178.0179.0178.0163.0177.0158.0144.329140.398135.197121.077146.526139.587145.786150.961170.77162.777157.13174.859153.15831.63932.33835.59351.69150.78449.85451.37948.81449.78449.51850.5646.60447.965NA45.496NANANA
us-gaap:OperatingLeaseLiabilityNoncurrent █████▇▇▇▆▇▁369.0383.0376.0373.0372.0346.0355.0330.0294.0311.00.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo NANA85.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree NANA69.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour NANA54.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive NANA42.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive NANA171.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:StockholdersEquity █▇▇▇▇▇▇▇▇▆▆▆▆▆▅▄▄▄▄▃▃▃▃▃▃▃▃▃▂▂▂▂▂▁▁▁▁▁▁▁▁6771.06261.06043.05949.05901.05893.05860.05824.05719.05632.05590.05602.05362.05141.04874.04068.7743840.8373659.1963523.6293457.7283439.1633406.5263265.8783224.9993123.3882979.8582911.5112833.8612728.0732568.5722418.6032265.0572112.4861989.7911872.2562033.4281952.3111863.031756.3121729.1231673.828NA1505.07NANANA
us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest █▇▇▇▇▇▇▇▆▆▆▆▆▆▅▄▄▃▃▃▃▃▃▃▂▂▂▂▁▁▁7339.06825.06578.06488.06437.06438.06403.06362.06259.06185.06076.06088.05846.05641.05369.04551.4994209.0434032.8323892.0453824.1373737.4363704.4023561.9313519.8383417.1753270.7423201.8883122.3482728.0732568.5722418.603NANANA1872.256NANANA1756.312NANANANANANANA
us-gaap:CommonStockValue ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄███████████████▁▁▁▁▁▁▁▁▁▁▁1.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.3471.3471.3471.3471.3471.3471.3471.3471.3471.3471.3471.3471.3471.3471.3470.6730.6730.6730.6720.6720.670.6690.6670.6660.6660.666NA0.663NANANA
us-gaap:AdditionalPaidInCapitalCommonStock ███▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▆▆▆▆▆▆▆▅▅▅▅▄▄▄▄▃▂▂▂▁▁▁571.0564.0569.0563.0558.0551.0553.0561.0558.0553.0556.0562.0558.0555.0555.0558.423555.478552.061550.641546.519545.797542.886542.148540.342537.368534.542530.441527.992523.526519.323512.105509.295506.609503.187496.254486.852481.895474.408467.796466.149464.426NA452.703NANANA
us-gaap:RetainedEarningsAccumulatedDeficit █▇▇▇▇▇▇▇▇▇▇▆▆▆▅▄▄▄▄▄▄▄▃▃▃▃▃▃▂▂▂▂▂▁▁▁▁▁▁▁▁6633.06145.05938.05863.05840.05860.05757.05724.05600.05513.05477.05400.05125.04874.04613.03837.6443653.9883525.823412.2863337.9683296.9223209.4153109.9873022.7172863.0692679.9062555.5282394.2032248.5132095.9041954.6611798.7211643.5151510.2661399.4721567.3711492.9141382.3371299.4381277.9011214.884NA1058.737NANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▅▄▅▄▃▃▄▄▅▅▅▆▆██▇▅▃▂▂▄▃▁▂▂▁▄▆███▇▇▇▇▇▇-56.0-70.0-64.0-69.0-87.0-106.0-74.0-66.0-50.0-64.0-62.0-24.0-33.03.07.0-13.946-53.824-103.636-121.306-108.126-82.101-90.663-129.292-121.865-119.924-137.662-79.433-36.433-0.132-1.782-2.616-10.921-11.726-11.032-10.84-8.163-9.865NA-9.07NANANANANANANA
us-gaap:TreasuryStockValue ▇▇████▇██▇▇▇▆▆▆▆▆▆▆▆▆▅▅▅▄▃▃▂▂▂▂▂▁▁▁▁▁▁▁378.0379.0401.0409.0411.0413.0377.0396.0390.0371.0382.0337.0289.0292.0302.0314.694316.152316.396319.339319.98322.802256.459258.312217.542158.47298.27596.37253.24845.18146.2246.2232.71126.58513.30213.30213.30213.3022.5182.518NANANANANANANA
us-gaap:MinorityInterest ██▇▇▇▇▇▇▇█▆▆▆▆▆▆▃▃▃▃▁▁▁▁▁▁▁▁568.0564.0535.0539.0536.0545.0543.0538.0540.0553.0486.0486.0484.0500.0495.0482.725368.206373.636368.416366.409298.273297.876296.053294.839293.787290.884290.377288.487NANA0.0NANANANANANANANANANANANANANANA
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue ▁█7.08.0NA7.08.06.0NA6.06.07.05.05.04.04.03.7773.6763.5383.009-1.3132.3752.8342.5691.8463.1962.7594.0412.4384.5793.2135.734NANANANANANANANANANANANANANANANA
us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders ▄▄11.011.0NA10.019.010.0NA10.022.08.08.08.022.07.07.2334.73411.574.4634.3374.2164.0993.9853.9743.7643.663.558NANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities █▄▆▅▆▁▅▇▄▂▄█▄▃▇▆▄▂▄▃▃▂▃▅▃▃▄▅▃▃▃▄▂▂▂▃▃▂▂▂▂▁▁▂617.0265.0431.0357.0448.061.0333.0501.0320.0147.0254.0606.0324.0225.0575.336482.95322.32157.394289.692174.268240.957128.935237.536405.945244.799190.556256.252343.882219.737212.505205.229292.02139.228116.252123.431178.009212.557110.057117.943119.04884.64540.6668.303159.387NANA
us-gaap:NetCashProvidedByUsedInInvestingActivities ▇▇▇▇▇▇▅▇▇▆▇▇▇▇▇▇▇▇▇▁█▇▆▆▇▇▇▆█▇▇▇▇▇▇▇█▇▇▇▇█▇█-129.0-135.0-143.0-106.0-128.0-132.0-1006.0-185.0-288.0-475.0-193.0-207.0-176.0-178.0-192.565-148.962-162.454-148.019-173.715-2262.66820.804-147.221-452.583-379.305-77.633-96.655-121.027-659.702137.568-130.044-307.591-305.761-267.562-121.324-272.387-96.844-30.558-67.182-63.973-72.464-38.115-28.233-37.356-20.554NANA
us-gaap:NetCashProvidedByUsedInFinancingActivities ▃▃▃▃▁▆▃▅▃▃▃▃▂▁▄▃▃▃▃█▃▃▃▃▃▃▃▄▃▃▃▃▃▃▂▃▃▃▃▃▃▃▄▃-38.0-34.0-202.0-145.0-752.0883.0-39.0717.0-69.021.0-96.0-89.0-511.0-731.0466.44-59.836-146.925-99.679-27.2841696.99-103.368-33.121-83.689-90.024-87.435-25.664-67.268256.908-13.881-11.119-27.893-20.204-24.052-7.119-259.4346.76533.39726.36612.9920.03311.28911.777171.0190.695NANA
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect ▆▄▄▄▂▇▁█▄▃449.093.097.0110.0-429.0809.0-709.01028.0-36.0-308.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:DeferredIncomeTaxExpenseBenefit ▇▇▇▇▆█▇▇▇▇▇▇▇▇▁▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇14.010.0-8.058.0-30.0126.020.019.00.015.0-12.029.029.016.0-557.2948.33221.235-6.273-5.2332.9244.35358.63732.1994.497-2.2435.33124.50815.111.0848.27510.28923.01830.95929.466-10.178-2.3355.9290.791-5.3213.4868.5337.4160.8617.227NANA
us-gaap:DepreciationDepletionAndAmortization ██████▇▇▇▇▇▆▆▆▆▆▆▆▆▄▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁202.0195.0196.0196.0191.0190.0188.0178.0176.0171.0168.0161.0156.0156.0152.467153.634144.63150.269150.47394.22967.2565.71465.52861.24860.3458.64160.09253.9248.50245.97241.51440.72840.2135.35634.9438.42435.78335.39433.15332.86132.80532.57832.4132.201NANA
us-gaap:IncreaseDecreaseInAccountsPayable ▇█▇▆▆▅▄▅▄▅▁▇▆▅▆▅▇▇▅▅▇▆▆▅▆▅▆▃▆▅▅▆▅▆▆▅▆▅▇▅▇▅▇▄57.075.050.09.010.0-2.0-40.0-9.0-33.0-7.0-136.047.02.0-13.025.101-21.13132.65349.377-22.159-20.28530.64223.7528.907-28.1841.298-3.6251.532-76.7797.716-29.706-5.69814.301-9.51614.73322.926-18.60811.095-28.13829.869-28.9241.843-22.48155.866-33.399NANA
us-gaap:IncreaseDecreaseInInventories ▅▆▇▄▁▅▆▄▁▄█▆▄▆▇▅▃▅▇▄▄▆▅▃▄▃▆▃▅▄▅▆▄▅▆▃▄▂▆▃▇▅█▄13.042.079.0-21.0-95.08.024.0-11.0-106.0-19.081.033.0-32.041.055.945-2.738-40.45119.24455.861-6.595-28.15940.8786.469-55.784-14.136-35.97929.405-46.132-1.49-32.8720.30824.432-6.8838.77627.761-35.587-15.281-68.37224.529-41.9561.941-3.77194.225-14.222NANA
us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet ▆▄▂▃▄▅▃▂▅▄▄▄▅▃▅▂▆▁▄▂█▃▂▂▂▃▂▂▂▂▂▂▂▇▂▄▂▂▂▂▃▂▂▂45.025.0-4.014.019.032.07.06.036.022.019.021.028.016.030.1644.25440.597-10.01523.2830.9865.2268.9540.659-3.143-1.1036.201-0.2911.7122.0581.3854.168-3.6315.72153.8321.56318.435-1.036-3.7244.6293.9436.131-4.6361.019-0.345NANA
us-gaap:NetCashProvidedByUsedInOperatingActivities █▄▆▅▆▁▅▇▄▂▄█▄▃▇▆▄▂▄▃▃▂▃▅▃▃▄▅▃▃▃▄▂▂▂▃▃▂▂▂▂▁▁▂617.0265.0431.0357.0448.061.0333.0501.0320.0147.0254.0606.0324.0225.0575.336482.95322.32157.394289.692174.268240.957128.935237.536405.945244.799190.556256.252343.882219.737212.505205.229292.02139.228116.252123.431178.009212.557110.057117.943119.04884.64540.6668.303159.387NANA
us-gaap:NetIncomeLoss ▆▃▂▁▁▂▂▂▂▂▂▄▃▃█▃▂▂▂▁▂▂▂▂▃▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▂▂▂▁▁▁522.0242.0113.057.015.0145.072.0158.0119.072.0123.0308.0278.0287.0802.0210.832152.827138.1998.94565.662111.124123.128110.969183.604205.095146.342183.291167.757169.443158.032170.972170.29145.816123.34795.27786.964115.50187.81326.44367.9381.04983.54484.07362.73156.94217.647
us-gaap:ProfitLoss ▆▃▂▁▁▂▂▂▂▂▂▄▃▃█▃▂▂▂▁▂▂▂▂▃▂▂▂▂▂▂▂536.0253.0123.069.024.0157.085.0166.0129.082.0131.0318.0288.0297.0816.0219.15159.418144.71105.28970.014115.62128.936116.157188.42210.061150.407187.385170.156169.443158.032170.972170.29NANANANANANANANANANANANANANA
us-gaap:ShareBasedCompensation ███▇█▆▆▆▆▇▆▅▅▆▆▆▄▆█▁▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁8.08.08.07.08.06.06.06.06.07.06.05.05.06.06.265.9724.4656.3037.6051.5042.7812.3032.6522.6392.5652.342.4052.3452.2892.2222.1621.681.6251.4991.4871.5151.4741.6511.6291.6351.6241.5031.5981.587NANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities ▇▇▇▇▇▇▅▇▇▆▇▇▇▇▇▇▇▇▇▁█▇▆▆▇▇▇▆█▇▇▇▇▇▇▇█▇▇▇▇█▇█-129.0-135.0-143.0-106.0-128.0-132.0-1006.0-185.0-288.0-475.0-193.0-207.0-176.0-178.0-192.565-148.962-162.454-148.019-173.715-2262.66820.804-147.221-452.583-379.305-77.633-96.655-121.027-659.702137.568-130.044-307.591-305.761-267.562-121.324-272.387-96.844-30.558-67.182-63.973-72.464-38.115-28.233-37.356-20.554NANA
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▅▅▅▄▅▆▇▇██▇▇▆▆▆▅▆▅▆▇▆▅▆▅▄▄▅▄▄▄▇█▆▆▆▄▃▂▂▂▁▁129.0141.0122.0112.0127.0164.0183.0193.0208.0203.0195.0195.0158.0154.0162.729133.369146.617134.285161.153180.17150.833136.328162.19125.304108.1195.822119.92194.271106.171110.741180.932200.418147.089150.784151.41994.89575.66664.90265.0242.64538.52328.808NANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities ▃▃▃▃▁▆▃▅▃▃▃▃▂▁▄▃▃▃▃█▃▃▃▃▃▃▃▄▃▃▃▃▃▃▂▃▃▃▃▃▃▃▄▃-38.0-34.0-202.0-145.0-752.0883.0-39.0717.0-69.021.0-96.0-89.0-511.0-731.0466.44-59.836-146.925-99.679-27.2841696.99-103.368-33.121-83.689-90.024-87.435-25.664-67.268256.908-13.881-11.119-27.893-20.204-24.052-7.119-259.4346.76533.39726.36612.9920.03311.28911.777171.0190.695NANA
us-gaap:ProceedsFromIssuanceOfLongTermDebt NANANA0.0NANANANANANANANANANA745.0NANANA0.0NANANA0.0NANANANANANANA0.0NANANA0.0NANANA0.0NANANANANANANA
us-gaap:RepaymentsOfLongTermDebt NANA154.0100.0NANANANANANANANANANANANANANANANANANANANANANANANANANA0.0NANANA0.0NANANA0.0NANANANANANANA
us-gaap:PaymentsOfDividendsCommonStock ▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁█▁▁▁▁▁▁▁▁▁34.035.035.034.034.034.034.033.032.033.033.033.027.027.026.50927.17624.65924.65624.62724.61623.61723.723.69923.95621.93221.96421.96622.06716.83416.78915.03215.08412.56712.553263.17612.5074.9244.9144.9064.9134.2284.2184.2074.201NANA
us-gaap:PaymentsForRepurchaseOfCommonStock NANA0.00.00.054.00.010.020.00.057.049.0NANA0.00.00.00.00.00.00266.7250.67948.20551.4560.8042.043.1359.495NANA13.5096.126NANA0.00.0NANA2.499NANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value1000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01347000.01347000.01347000.01347000.01347000.01347000.01347000.01347000.01347000.01347000.01347000.01347000.01347000.01347000.01347000.0673000.0673000.0673000.0672000.0672000.0670000.0669000.0667000.0666000.0666000.0666000.0663000.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value4.061.880.870.450.111.130.561.220.920.560.952.362.132.216.181.621.181.070.760.510.850.940.851.391.551.11.381.261.271.182.562.552.181.841.431.31.731.320.41.021.221.261.270.950.860.27
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value4.041.870.870.450.111.130.561.220.920.550.952.352.122.26.151.611.171.060.760.510.850.940.841.391.541.11.371.251.261.182.542.542.171.841.421.31.721.310.41.011.211.251.260.950.860.27
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value536236118753411364142133707231724228381825420315585391191611031812228814013117115817917114512392889710530608184
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues18.710.06.04.02.05.83.46.96.23.53.614.110.813.240.712.110.38.04.93.111.016.610.515.318.88.012.410.517.115.518.817.015.514.211.610.810.710.13.66.28.89.7

Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value1510.0121310.012158.09.010.08.010.06.012224.6286.146.526.3444.3524.4965.8085.1884.8164.9664.0654.0942.3990.00.00.00.0
Percentage of ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0
Percentage of Revenues0.50.40.60.70.60.60.80.40.40.50.40.40.30.61.10.20.30.30.40.30.40.60.50.40.40.40.40.20.00.00.00.0

Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value5512461308844125791501428080327248295841259209162924312416710818622792144133171158179171
Percentage of ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues19.310.46.64.62.66.54.27.36.64.04.014.511.113.741.912.310.68.45.33.411.417.211.015.719.28.412.710.717.115.518.817.0

Cost Of Goods And Services Sold

us-gaap:CostOfGoodsAndServicesSold

us-gaap:CostOfGoodsAndServicesSold


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value1987184816421650154016491633169518041726164117161683160815141613
Percentage of CostOfGoodsAndServicesSold100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues69.578.483.686.990.185.486.782.084.185.282.376.175.374.875.376.5

Gross Profit

us-gaap:GrossProfit

us-gaap:GrossProfit


Gross
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value8725093232481692832503713402993545395525424984984053672812022412552363113532843623613052872953042732271901722011727714716716716413412657
Percentage of GrossProfit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues30.521.616.413.19.914.613.318.015.914.817.723.924.725.224.823.620.518.916.215.822.226.223.926.229.825.831.928.830.627.931.130.329.126.323.821.022.116.79.015.218.119.320.617.315.47.4

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

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value694325156545.01167321616811317639138138632532722720011463182198177248308228286294261241
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues24.313.87.92.80.36.03.910.57.85.68.817.317.018.016.215.511.510.36.65.016.820.318.020.926.020.725.223.526.223.5

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value1587233-15.0-19.0-41.0-12.050393145739389-490.6910868559.188-6.552666961609878981249283879283675338604612384645443433
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues5.53.11.7-0.8-1.1-2.1-0.62.41.81.52.33.24.24.1-24.45.23.42.90.5-0.56.17.16.25.18.37.18.79.99.38.19.29.28.97.96.74.76.74.51.53.95.05.25.64.44.1

us-gaap:IncomeTaxExpenseBenefit us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value-1.0-11.08.06.03.0-4.09.01.0-1.0-1.0-14.0-5.0-12.0-9.015-10.383-7.502-16.886-25.248-34.596-1.653-0.503-4.02-1.644
Percentage of IncomeTaxExpenseBenefit-0.6-15.324.2-40.0-15.89.8-75.02.0-2.6-3.2-31.1-6.8-12.9-10.1-3.2-9.6-11.0-30.2-274.8528.0-2.5-0.7-6.5-2.7
Percentage of Revenues-0.0-0.50.40.30.2-0.20.50.0-0.0-0.0-0.7-0.2-0.5-0.40.8-0.5-0.4-0.9-1.5-2.7-0.2-0.1-0.4-0.1
Percentage of Revenues us-gaap:CorporateNonSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:IncomeTaxExpenseBenefit us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, wlk:Olefins


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value6341-3.04.0-4.0411518189.021343637-89.48258365738315152564574
Percentage of IncomeTaxExpenseBenefit39.956.9-9.1-26.721.1-100.0-125.036.046.229.046.746.638.741.618.253.653.5103.5419.8-487.778.075.891.776.475.4
Percentage of Revenues2.21.7-0.20.2-0.22.10.80.90.80.41.11.51.61.7-4.52.81.83.02.22.54.85.45.73.96.3
Percentage of Revenues us-gaap:OperatingSegments wlk:Olefins9.47.60.01.1-1.19.60.04.03.82.00.06.37.57.40.011.67.510.60.06.410.512.20.07.812.0

us-gaap:OperatingSegments, wlk:Vinyls


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value964228-25.0-18.0-78.0-36.031222338446961-416.979603914-4.655-3.91216178.731526
Percentage of IncomeTaxExpenseBenefit60.858.384.8166.794.7190.2300.062.056.474.284.460.374.268.585.056.057.526.8-50.759.724.524.914.226.327.1
Percentage of Revenues3.41.81.4-1.3-1.1-4.0-1.91.51.01.11.92.03.12.8-20.72.92.00.8-0.3-0.31.51.80.91.32.2
Percentage of Revenues us-gaap:OperatingSegments wlk:Vinyls4.42.30.0-1.6-1.3-5.20.01.91.31.50.02.63.93.70.03.82.61.10.0-0.52.83.20.02.64.7

Interest Expense

us-gaap:InterestExpense

us-gaap:InterestExpense


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value36333437403135312830302831374040383942245.9156.6857.8968.2118.9589.5919.179.4869.5399.1573.1613.2975.3436.2817.3671111121212121211118.784
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues1.31.41.71.92.31.61.91.51.31.51.51.21.41.72.01.92.02.02.41.90.50.70.80.70.80.90.80.81.00.90.30.30.60.70.91.51.31.21.51.31.41.51.41.41.1

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value5222421135715145721581197212330827828780221015213898651111231101832051461831671691581701701451239586115872667818384625617
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues18.310.35.83.00.97.53.87.65.63.66.213.712.413.339.910.07.77.15.75.110.212.611.215.517.313.316.113.417.015.418.017.015.514.311.910.612.68.53.17.08.89.610.68.07.02.3

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value522242571514515811972308278287
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues18.310.33.00.97.57.65.63.613.712.413.3
Percentage of Revenues us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.0

Net Income Loss Attributable To Noncontrolling Interest

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value141110.0129.012138.010.010.08.010.010.010.0138.3186.5916.526.3444.3524.4965.8085.1884.8164.9664.0654.0942.3990.00.00.00.0
Percentage of NetIncomeLossAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0
Percentage of Revenues0.50.50.50.60.50.60.70.40.50.50.40.40.40.50.70.40.30.30.40.30.40.60.50.40.40.40.40.20.00.00.00.0

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value1411129.0128.010.010.010.010.010.0
Percentage of NetIncomeLossAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues0.50.50.60.50.60.40.50.50.40.40.5
Percentage of Revenues us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.0

Nonoperating Income Expense

us-gaap:NonoperatingIncomeExpense

us-gaap:NonoperatingIncomeExpense


Nonoperating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value10.01212129.0116.0212.09.0-1.0238.0220.4092.058-0.5385.0714.307418.1812.6454.482.636229.096-7.161-2.674.6012.5093.653-0.287-0.0953.519-0.1561.2221.1071.3471.3321.4571.6321.207
Percentage of NonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues0.30.50.60.60.50.60.31.00.10.4-0.11.00.41.00.00.1-0.00.30.23.20.80.30.50.21.90.8-0.6-0.20.50.20.4-0.0-0.00.4-0.00.10.10.10.20.20.20.1

us-gaap:NonoperatingIncomeExpense us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Nonoperating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value1.02.01.04.01.04.05.08.0-1.03.0-4.06.03.08.01.0513.2120.408-0.1771.337412.6222.6511.9071.303
Percentage of NonoperatingIncomeExpense10.016.78.333.311.136.483.338.1-50.033.3400.026.137.536.4257.0156.1-75.8-3.531.0100.332.0100.242.649.4
Percentage of Revenues0.00.10.10.20.10.20.30.4-0.00.1-0.20.30.10.40.10.20.0-0.00.13.20.20.30.20.1
Percentage of Revenues us-gaap:CorporateNonSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NonoperatingIncomeExpense us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, wlk:Olefins


Nonoperating
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value2.02.01.00.01.01.01.01.02.00.01.01.02.01.445-0.1840.5881.371.2941.1011.0931.5131.231.323-0.104
Percentage of NonoperatingIncomeExpense20.016.78.30.09.116.74.850.022.2-0.04.312.59.1353.3-8.9-109.327.030.02.713.457.227.550.2-0.5
Percentage of Revenues0.10.10.10.00.10.10.00.00.10.00.00.00.10.1-0.00.00.10.10.10.10.20.10.1-0.0
Percentage of Revenues us-gaap:OperatingSegments wlk:Olefins0.30.00.30.00.20.00.20.20.40.00.20.20.40.0-0.00.10.30.00.20.20.40.00.2-0.0

us-gaap:OperatingSegments, wlk:Vinyls


Nonoperating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value7.010.09.07.08.06.00.0122.04.03.0164.012-2.087-0.97-1.5343.8781.278-1.2264.466-1.5191.0730.011.413
Percentage of NonoperatingIncomeExpense70.083.375.058.388.954.50.057.1100.044.4-300.069.650.054.5-510.3-47.1285.176.529.7-3.054.6-57.424.00.46.4
Percentage of Revenues0.20.40.50.40.50.30.00.60.10.20.20.70.20.6-0.1-0.0-0.10.20.1-0.10.4-0.20.10.00.1
Percentage of Revenues us-gaap:OperatingSegments wlk:Vinyls0.30.50.00.50.60.40.00.70.10.30.00.90.20.70.0-0.1-0.10.30.0-0.20.8-0.30.00.00.3

Operating Income Loss

us-gaap:OperatingIncomeLoss

us-gaap:OperatingIncomeLoss


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value720346178793613610222619413420739640440136536526723515246179202181254295229302306266248257266235194156142170145501171381401371079934
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues25.214.79.14.22.17.05.410.99.06.610.417.618.118.718.217.313.512.18.83.616.620.718.421.424.920.826.624.526.724.127.126.525.022.419.517.418.714.15.912.115.016.217.213.812.24.4

us-gaap:OperatingIncomeLoss us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value8.0-34.0-10.0-14.0-9.01.0-15.0-19.0-17.0-4.0-8.0-17.0-25.0-28.0-17.353-16.206-19.481-15.96-34.944-94.147-12.834-9.075-9.107-10.454
Percentage of OperatingIncomeLoss1.1-9.8-5.6-17.7-25.00.7-14.7-8.4-8.8-3.0-3.9-4.3-6.2-7.0-4.8-4.4-7.3-6.8-22.9-202.2-7.1-4.5-5.0-4.1
Percentage of Revenues0.3-1.4-0.5-0.7-0.50.1-0.8-0.9-0.8-0.2-0.4-0.8-1.1-1.3-0.9-0.8-1.0-0.8-2.0-7.4-1.2-0.9-0.9-0.9
Percentage of Revenues us-gaap:CorporateNonSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingIncomeLoss us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, wlk:Olefins


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value277180225125624992823790162158163166165143179149118140149138196220
Percentage of OperatingIncomeLoss38.552.012.464.669.445.648.040.742.327.643.540.939.140.645.645.253.676.498.1254.478.173.876.377.474.8
Percentage of Revenues9.77.61.12.71.53.22.64.53.81.84.57.27.17.68.37.87.29.38.69.312.915.314.016.618.6
Percentage of Revenues us-gaap:OperatingSegments wlk:Olefins41.333.50.013.86.914.50.020.517.28.10.029.932.832.40.033.029.333.10.023.828.434.60.033.435.6

us-gaap:OperatingSegments, wlk:Vinyls


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value435200166422073681531291011252512712662152161437137225262526787
Percentage of OperatingIncomeLoss60.457.893.353.255.653.766.767.766.575.460.463.467.166.359.159.253.730.424.547.829.030.728.826.729.8
Percentage of Revenues15.28.58.42.21.23.83.67.46.05.06.311.112.112.410.710.37.23.72.21.74.86.45.35.77.4
Percentage of Revenues us-gaap:OperatingSegments wlk:Vinyls19.911.00.02.71.54.90.09.57.76.40.014.615.516.20.013.59.65.10.02.88.811.40.011.315.6

Other Comprehensive Income Loss Net Of Tax

us-gaap:OtherComprehensiveIncomeLossNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value15-7.07.01920-32.0-6.0-16.013-2.0-51.09.0-40.0-2.025394917-13.18-26.0258.56238-7.427-1.94117-58.229-43.0-36.3011.650.8348.3050.805-0.886-0.192
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues0.5-0.30.41.01.2-1.7-0.3-0.80.6-0.1-2.60.4-1.8-0.11.31.92.50.9-0.8-2.00.84.0-0.8-0.21.5-5.3-3.8-2.90.20.10.90.1-0.1-0.0

us-gaap:OtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-06-302015-03-31
Value14-6.01819-32.0-16.014-2.0-51.09.0-36.0-4.020394917-13.166-26.0258.5623817-58.229
Percentage of OtherComprehensiveIncomeLossNetOfTax93.385.794.795.0100.0100.0107.7100.0100.0100.090.0200.080.5100.0100.0100.099.9100.0100.0100.0100.0100.0
Percentage of Revenues0.5-0.30.91.1-1.7-0.80.7-0.1-2.60.4-1.6-0.21.01.92.50.9-0.8-2.00.84.01.5-5.3
Percentage of Revenues us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NoncontrollingInterest


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312014-12-31
Value1.0-1.01.01.00.00.0-1.00.00.00.0-4.02.03.0-1.00.03.00.0
Percentage of OtherComprehensiveIncomeLossNetOfTax6.714.35.35.0-0.0-0.0-7.7-0.0-0.00.010.0-100.011.7-2.50.017.0-0.0
Percentage of Revenues0.0-0.00.10.10.00.0-0.00.00.00.0-0.20.10.1-0.00.00.20.0
Percentage of Revenues us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value5362531236924157851661298213131828829781621915914410570115128116188210150187170169158170170
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues18.710.76.33.61.48.14.58.06.04.06.614.112.913.840.610.48.17.46.15.510.613.211.815.917.713.616.513.617.015.418.017.0

Revenues

us-gaap:Revenues

us-gaap:Revenues


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value28592357196518981709193218832066214420251995225522352150201021091979194317351279108697598611881185110311351253998102795110049398648018219131034859968925867795779818778
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Revenues us-gaap:ConsolidationItems

us-gaap:IntersegmentElimination


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-30
Value13415093793768867275921331361131201021089886102322728282827232635578575707769
Percentage of Revenues4.76.44.74.22.23.54.63.53.54.56.76.05.15.65.15.15.04.45.92.62.52.92.92.42.32.22.13.55.68.68.08.29.47.6
Percentage of Revenues4.76.44.74.22.23.54.63.53.54.56.76.05.15.65.15.15.04.45.92.62.52.92.92.42.32.22.13.55.68.68.08.29.47.6
Percentage of Revenues us-gaap:IntersegmentElimination100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:OperatingSegments, wlk:BuildingProducts, wlk:Vinyls


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value480412353413344292296365348259269342357289265354332268264182129113115131134
Percentage of Revenues16.817.518.021.820.115.115.717.716.212.813.515.216.013.413.216.816.813.815.214.311.911.611.711.111.3
Percentage of Revenues16.817.518.021.820.115.115.717.716.212.813.515.216.013.413.216.816.813.815.214.311.911.611.711.111.3
Percentage of Revenues us-gaap:OperatingSegments wlk:BuildingProducts wlk:Vinyls100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, wlk:Polyethylene, wlk:Olefins


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value515414312302302310304315345337367396387369397377358385364380371346367423450
Percentage of Revenues18.017.615.915.917.716.016.115.216.116.618.417.617.317.219.817.918.119.921.029.834.235.537.235.738.0
Percentage of Revenues18.017.615.915.917.716.016.115.216.116.618.417.617.317.219.817.918.119.921.029.834.235.537.235.738.0
Percentage of Revenues us-gaap:OperatingSegments wlk:Polyethylene wlk:Olefins100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, wlk:PvcCausticSodaAndOther, wlk:Vinyls


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value1708140812371116100412131189125313191307123313721396135812281253115711311000599462430402468429
Percentage of Revenues59.759.763.058.858.762.863.160.661.564.561.860.862.563.261.159.458.558.257.746.942.644.240.839.436.3
Percentage of Revenues59.759.763.058.858.762.863.160.661.564.561.860.862.563.261.159.458.558.257.746.942.644.240.839.436.3
Percentage of Revenues us-gaap:OperatingSegments wlk:PvcCausticSodaAndOther wlk:Vinyls100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, wlk:StyreneFeedstockAndOther, wlk:Olefins


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value156123636759117941331321221261459513412012513015710611612284
Percentage of Revenues5.55.23.23.53.56.15.06.46.26.06.36.44.36.26.05.96.68.16.19.111.38.7
Percentage of Revenues5.55.23.23.53.56.15.06.46.26.06.36.44.36.26.05.96.68.16.19.111.38.7
Percentage of Revenues us-gaap:OperatingSegments wlk:StyreneFeedstockAndOther wlk:Olefins100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:IntersegmentElimination, wlk:Olefins


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-30
Value1341509379366886727492132136112120102107978579302727282826232634568574707669
Percentage of Revenues4.76.44.74.22.13.54.63.53.54.56.66.05.05.65.15.15.04.44.62.42.52.92.92.42.22.12.13.55.58.58.08.19.37.6
Percentage of Revenues4.76.44.74.22.13.54.63.53.54.56.66.05.05.65.15.15.04.44.62.42.52.92.92.42.22.12.13.55.58.58.08.19.37.6
Percentage of Revenues us-gaap:IntersegmentElimination wlk:Olefins100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IntersegmentElimination, wlk:Vinyls


Revenuesus-gaap:
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-30
Value0.00.01.00.00.00.01.00.01.00.01.00.00.01.00.3190.292232.130.2250.364-0.0980.3410.3870.370.3550.3310.3430.4030.4440.2640.3910.388
Percentage of Revenues0.00.00.10.00.00.00.00.00.10.00.00.00.00.00.00.01.30.20.00.0-0.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Revenues0.00.00.10.00.00.00.00.00.10.00.00.00.00.00.00.01.30.20.00.0-0.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Revenues us-gaap:IntersegmentElimination wlk:Vinyls0.00.0100.00.00.00.0100.00.0100.00.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, wlk:Olefins


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value671537375369361427398448477459493541482503517502489542471497494431467588620
Percentage of Revenues23.522.819.119.421.122.121.121.722.222.724.724.021.623.425.723.824.727.927.238.945.544.247.449.552.4
Percentage of Revenues23.522.819.119.421.122.121.121.722.222.724.724.021.623.425.723.824.727.927.238.945.544.247.449.552.4
Percentage of Revenues us-gaap:OperatingSegments wlk:Olefins100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, wlk:Vinyls


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value2188182015901529134815051485161816671566150217141753164714931607148913991264781591544518599564
Percentage of Revenues76.577.280.980.678.977.978.978.377.877.375.376.078.476.674.376.275.372.072.961.154.555.852.550.547.6
Percentage of Revenues76.577.280.980.678.977.978.978.377.877.375.376.078.476.674.376.275.372.072.961.154.555.852.550.547.6
Percentage of Revenues us-gaap:OperatingSegments wlk:Vinyls100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Selling General And Administrative Expense

us-gaap:SellingGeneralAndAdministrativeExpense

us-gaap:SellingGeneralAndAdministrativeExpense


Selling
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value125136117108104120115110117116108114115108191251301231157261535557575560543938383738333429302726292826272726
Percentage of SellingGeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues4.45.86.05.76.16.26.15.35.55.75.45.15.15.00.96.06.66.46.75.75.75.55.64.84.95.05.34.43.93.84.03.84.13.94.23.63.42.63.13.13.13.13.43.53.2

Assets

us-gaap:Assets

us-gaap:Assets


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value14719140501383513694135551416313261131071221612104116021172111346116041207611244108851072410890108975920572455755524541151795213512643694171406039233708355934123544344133303266320731472954
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Assets us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value163012721232136912551751673139839335869969443953712175324283905105391060
Percentage of Assets11.19.18.910.09.312.45.110.73.23.06.05.93.94.610.14.73.93.64.75.019.0
Percentage of Assets11.19.18.910.09.312.45.110.73.23.06.05.93.94.610.14.73.93.64.75.019.0
Percentage of Assets us-gaap:CorporateNonSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:OperatingSegments, wlk:Olefins


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value2050198719231906191619781991202620572137202420742044198620062015207721202092209421301869
Percentage of Assets13.914.113.913.914.114.015.015.516.817.717.417.718.017.116.617.919.119.819.219.236.033.5
Percentage of Assets13.914.113.913.914.114.015.015.516.817.717.417.718.017.116.617.919.119.819.219.236.033.5
Percentage of Assets us-gaap:OperatingSegments wlk:Olefins100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, wlk:Vinyls


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value11039107911068010419103841043410597968397669609887989538863908188538695837982148287826227342638
Percentage of Assets75.076.877.276.176.673.779.973.979.979.476.576.478.178.373.377.377.076.676.175.846.247.3
Percentage of Assets75.076.877.276.176.673.779.973.979.979.476.576.478.178.373.377.377.076.676.175.846.247.3
Percentage of Assets us-gaap:OperatingSegments wlk:Vinyls100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Liabilities

us-gaap:Liabilities

us-gaap:Liabilities


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value738072257257720671187725685867455957591955265633550059636707669266766691699870722183201920132004199319092012200316411603164216581595156915391510148914671510147814731449
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 Assets50.151.452.552.652.554.551.751.548.848.947.648.148.551.455.559.561.362.464.364.936.935.336.136.336.836.938.639.137.638.440.442.343.044.145.142.643.344.146.246.146.849.1

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value14719140501383513694135551416313261131071221612104116021172111346116041207611244108851072410890108975920572455755524541151795213512643694171406039233708355934123544344133303266320731472954
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-312009-12-312008-12-31
Value67716261604359495901589358605824571956325590560253625141487440683840365935233457343934063265322431232979291128332728256824182265211219891872203319521863175617291673150512841239
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets46.044.643.743.443.541.644.244.446.846.548.247.847.344.340.436.235.334.132.431.758.159.558.658.457.757.555.855.362.461.659.657.757.055.954.957.456.755.953.853.953.250.90.00.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-31
Value-24.0-24.0-24.03.03.03.03.02727272752434343303029
Percentage of StockholdersEquity-0.4-0.4-0.40.10.10.10.10.50.50.50.50.90.80.80.90.70.80.8
Percentage of Assets-0.2-0.2-0.20.00.00.00.00.20.20.20.20.40.40.40.40.30.30.3
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-56.0-70.0-64.0-69.0-87.0-106.0-74.0-66.0-50.0-64.0-62.0-24.0-33.03.07.0
Percentage of StockholdersEquity-0.8-1.1-1.1-1.2-1.5-1.8-1.3-1.1-0.9-1.1-1.1-0.4-0.60.10.1
Percentage of Assets-0.4-0.5-0.5-0.5-0.6-0.7-0.6-0.5-0.4-0.5-0.5-0.2-0.30.00.1
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedTranslationAdjustment


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-31
Value-32.0-46.0-40.0-72.0-90.0-109.0-77.0-93.0-77.0-91.0-89.0-76.0-76.0-40.0-36.0-43.0-84.0-150.0
Percentage of StockholdersEquity-0.5-0.7-0.7-1.2-1.5-1.8-1.3-1.6-1.3-1.6-1.6-1.4-1.4-0.8-0.7-1.1-2.2-4.3
Percentage of Assets-0.2-0.3-0.3-0.5-0.7-0.8-0.6-0.7-0.6-0.8-0.8-0.6-0.7-0.3-0.3-0.4-0.8-1.4
Percentage of Assets us-gaap:AccumulatedTranslationAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Assets Current

us-gaap:AssetsCurrent

us-gaap:AssetsCurrent


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value444537343477338131653768274234822595262728423004269429593463269923772251240824192190219121752248216620022011195118221687164916421601172517511997197017951756171616881475
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets30.226.625.124.723.326.620.726.621.221.724.525.623.725.528.724.021.821.022.122.237.038.339.040.740.038.738.638.141.740.440.641.943.248.551.356.457.353.953.853.553.650.0

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashAndCashEquivalentsAtCarryingValue


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-312008-12-31
Value1844139313131217110915377281437409445753788482851153167839537245938077061466296110269458808138765324615916257777901198111089582575871265463042828824590
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets12.59.99.58.98.210.95.511.03.33.76.56.74.27.312.76.03.63.54.23.513.010.711.917.419.018.316.915.920.112.811.415.116.921.923.233.832.326.925.323.722.60.021.30.00.00.00.0

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value18791430133712401130155975014594314677758115058741554710428405646663
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets12.810.29.79.18.311.05.711.13.53.96.76.94.57.512.96.33.93.85.911.9

Accounts Receivable Net Current

us-gaap:AccountsReceivableNetCurrent

us-gaap:AccountsReceivableNetCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value14761249107895791698993810371136103895211581186110596110971020942809908493424
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets10.08.97.87.06.87.07.17.99.38.68.29.910.59.58.09.89.48.87.48.38.37.6

Receivables Net Current

us-gaap:ReceivablesNetCurrent

us-gaap:ReceivablesNetCurrent


Receivables
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value1549132712141293116012651036109412131121103712411261113510011142109510039381070582549508520600527560592454421428433475407400393418444407462430362
Percentage of ReceivablesNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets10.59.48.89.48.68.97.88.39.99.38.910.611.19.88.310.210.19.48.69.89.89.69.19.411.110.210.811.610.410.110.611.012.811.511.711.112.113.412.514.413.712.3

Inventory Net

us-gaap:InventoryNet

us-gaap:InventoryNet


Inventory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value96595591882984593493690692510211014939905944900834831821801744448478434430486480525500437439471451427408399371407422490466508450
Percentage of InventoryNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.66.86.66.16.26.67.16.97.68.48.78.08.08.17.57.47.67.77.46.87.68.47.87.89.09.310.19.810.010.511.611.511.511.511.710.511.812.715.014.516.115.2

Prepaid Expense And Other Assets Current

us-gaap:PrepaidExpenseAndOtherAssetsCurrent

us-gaap:PrepaidExpenseAndOtherAssetsCurrent


Prepaid
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value875932425132424548403836462930344543485435241418231811182015131820141414151412112015
Percentage of PrepaidExpenseAndOtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.60.40.20.30.40.20.30.30.40.30.30.30.40.20.20.30.40.40.40.50.60.40.30.30.40.30.20.40.50.40.30.50.60.40.40.40.40.40.40.40.60.5

Land

us-gaap:Land

us-gaap:Land


Land
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value207198193198194332118131312
Percentage of Land100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.51.51.71.61.80.60.40.50.40.40.4

Machinery And Equipment Gross

us-gaap:MachineryAndEquipmentGross

us-gaap:MachineryAndEquipmentGross


Machinery
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value86878227756872816913363234542829213120391963
Percentage of MachineryAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets62.862.065.260.363.565.266.369.762.562.466.5

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross

us-gaap:PropertyPlantAndEquipmentGross


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value101039529874283627950
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0
Percentage of Assets73.071.975.369.273.0

Construction In Progress Gross

us-gaap:ConstructionInProgressGross

us-gaap:ConstructionInProgressGross


Construction
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value5275515733883895153552653519329
Percentage of ConstructionInProgressGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.84.24.93.23.69.36.86.510.32.91.0

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value37103168272023381919168515311379128711961098
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets26.823.923.419.417.630.229.434.037.736.637.2

Amortization Of Intangible Assets

us-gaap:AmortizationOfIntangibleAssets

us-gaap:AmortizationOfIntangibleAssets


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value272728272727282727272624252626273025
Percentage of AmortizationOfIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:PropertyPlantAndEquipmentNet


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value691969216920685368876883691268426832672065956519646864476412634363166392642064503230311430042916285527512757271022172150208819521785162915101394130912631232119511791170
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets47.049.350.050.050.848.652.152.255.955.556.855.657.055.653.156.458.059.659.059.254.654.453.952.852.853.152.952.950.751.551.449.848.245.844.339.338.137.937.737.337.539.6

us-gaap:PropertyPlantAndEquipmentNet us-gaap:StatementGeographical

country:DE


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value6665885285044013794170.0
Percentage of PropertyPlantAndEquipmentNet9.68.58.07.96.312.615.10.0
Percentage of Assets4.84.44.64.23.76.88.00.0
Percentage of Assets country:DE0.00.00.00.00.00.00.00.0

country:US


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value59306012582956685782258823192081150212231159
Percentage of PropertyPlantAndEquipmentNet85.787.088.488.490.186.284.199.799.599.399.0
Percentage of Assets42.945.350.246.953.146.444.551.244.037.439.2
Percentage of Assets country:US0.00.00.00.00.00.00.00.00.00.00.0

wlk:OtherForeignCountries


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value32431223824023536206.923
Percentage of PropertyPlantAndEquipmentNet4.74.53.63.73.71.20.70.3
Percentage of Assets2.32.42.12.02.20.70.40.2
Percentage of Assets wlk:OtherForeignCountries0.00.00.00.00.00.00.00.0

Investments In Affiliates Subsidiaries Associates And Joint Ventures

us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures us-gaap:CounterpartyName, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures

wlk:CypressInterstatePipelineLLC, us-gaap:CorporateJointVenture


Investments
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value7.08.08.09.09.0989.208
Percentage of InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.10.10.2
Percentage of Assets wlk:CypressInterstatePipelineLLC us-gaap:CorporateJointVenture0.00.00.00.00.00.0

wlk:RSCogenLLC, srt:AffiliatedEntity


Investments
Period End2020-12-312019-12-312018-12-312017-12-31
Value269.05.010.0
Percentage of InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures371.4112.562.5111.1
Percentage of Assets0.20.10.00.1
Percentage of Assets wlk:RSCogenLLC srt:AffiliatedEntity0.00.00.00.0

wlk:YNCORISGmbHCo.KG, srt:AffiliatedEntity


Investments
Period End2020-12-312019-12-312018-12-31
Value645757
Percentage of InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures914.3712.5712.5
Percentage of Assets0.50.40.5
Percentage of Assets wlk:YNCORISGmbHCo.KG srt:AffiliatedEntity0.00.00.0

Goodwill

us-gaap:Goodwill

us-gaap:Goodwill


Goodwill
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-312014-12-312013-12-312013-09-302013-06-302012-12-312011-12-312010-12-31
Value10851082108310751070106510741069107910471002100810061010101210119999509469256262626261292929
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets7.47.77.87.97.97.58.18.28.88.78.68.68.98.78.49.09.28.98.78.51.11.21.51.61.70.90.91.0

us-gaap:Goodwill us-gaap:StatementBusinessSegments

wlk:Olefins


Goodwillus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-31
Value303030303030303030303030303029292929292929292929292929292929292929
Percentage of Goodwill2.82.82.82.82.82.82.82.82.82.93.03.03.03.03.03.03.23.23.20.00.048.40.00.00.048.40.00.00.048.448.449.0100.0
Percentage of Assets0.20.20.20.20.20.20.20.20.20.20.30.30.30.20.30.30.30.30.30.50.50.50.50.60.60.60.60.70.70.70.80.80.9
Percentage of Assets wlk:Olefins0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.01.40.00.01.51.61.71.61.71.71.71.91.91.91.91.92.1

wlk:Vinyls


Goodwillus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-31
Value1055105210531045104010351044103910491017972978976982981969920916895323232323232323232323232310.0
Percentage of Goodwill97.297.297.297.297.297.297.297.297.297.197.097.097.097.097.097.096.896.896.80.00.051.60.00.00.051.60.00.00.051.651.651.00.0
Percentage of Assets7.27.57.67.67.77.37.97.98.68.48.48.38.68.18.78.98.68.48.20.50.60.60.60.60.60.60.60.70.80.80.80.80.0
Percentage of Assets wlk:Vinyls0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.011.10.00.01.21.21.21.21.31.21.11.81.81.82.02.20.0

Finite Lived Intangible Assets Net

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:FiniteLivedIntangibleAssetsNet


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value399419444461479497523541559563525550569594616635654596611
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.73.03.23.43.53.53.94.14.64.74.54.75.05.15.15.76.05.65.6

us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:CustomerRelationships


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312016-09-302015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value4445235256166116045257639.391012
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0100.00.00.00.00.00.00.00.0
Percentage of Assets3.23.94.55.15.65.50.91.11.60.30.30.4
Percentage of Assets us-gaap:CustomerRelationships0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:LicensingAgreements


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value84935769764146203.1353.9674.999
Percentage of FiniteLivedIntangibleAssetsNet18.917.810.911.212.60.00.00.00.00.00.0
Percentage of Assets0.60.70.50.60.70.70.90.50.10.10.2
Percentage of Assets us-gaap:LicensingAgreements0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OtherIntangibleAssets


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312016-09-302015-12-312014-12-312013-12-31
Value9.0111316175185219.637.021
Percentage of FiniteLivedIntangibleAssetsNet2.02.12.52.628.70.00.00.00.0
Percentage of Assets0.10.10.10.11.61.70.40.20.2
Percentage of Assets us-gaap:OtherIntangibleAssets0.00.00.00.00.00.00.00.00.0

us-gaap:Trademarks


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value758364768136426.361
Percentage of FiniteLivedIntangibleAssetsNet16.915.912.212.313.30.00.00.0
Percentage of Assets0.50.60.60.60.70.70.80.2
Percentage of Assets us-gaap:Trademarks0.00.00.00.00.00.00.00.0

wlk:TotalOtherIntangibleAssets


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value168187134161176
Percentage of FiniteLivedIntangibleAssetsNet37.835.825.526.128.8
Percentage of Assets1.21.41.21.31.6
Percentage of Assets wlk:TotalOtherIntangibleAssets0.00.00.00.00.0

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value4524674614604624324434173814000.0
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets3.13.33.33.43.43.13.33.23.13.30.0

us-gaap:OperatingLeaseRightOfUseAsset us-gaap:RelatedPartyTransaction

srt:AffiliatedEntity


Operating
Period End2020-12-312019-12-31
Value4150
Percentage of OperatingLeaseRightOfUseAsset8.911.3
Percentage of Assets0.30.4
Percentage of Assets srt:AffiliatedEntity0.00.0

Accounts Payable Current

us-gaap:AccountsPayableCurrent

us-gaap:AccountsPayableCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-312015-12-312015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value667603536447444431473496521548507626582596600560496235247261263219211249258247232217199208197227196223204
Percentage of AccountsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.54.33.93.33.33.03.63.84.34.54.45.35.15.15.05.04.64.24.85.05.15.05.16.16.66.76.56.45.66.15.96.96.17.16.9

Accrued Liabilities Current

us-gaap:AccruedLiabilitiesCurrent

us-gaap:AccruedLiabilitiesCurrent


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value818723821771665593768742733678676675604596657609447400537552312248287290251205276309167147155174147167181163129114137135105118
Percentage of AccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.65.15.95.64.94.25.85.76.05.65.85.85.35.15.45.44.13.74.95.15.34.35.25.34.74.05.36.03.83.53.84.54.04.75.34.63.83.44.24.23.44.0

Liabilities Current

us-gaap:LiabilitiesCurrent

us-gaap:LiabilitiesCurrent


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value1485132613571218110910241241123812541226118313011186165319671170103094311831204620506522534534453537573386359404432394399398362338311364331329323
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets10.19.49.88.98.27.29.49.410.310.110.211.110.514.216.310.49.58.810.911.110.58.89.49.79.98.710.311.28.98.610.011.010.611.211.710.29.89.411.210.310.511.0

Long Term Debt Current

us-gaap:LongTermDebtCurrent

us-gaap:LongTermDebtCurrent


Long
Period End2021-06-302021-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value20210.00.00.04617100.0
Percentage of LongTermDebtCurrent100.0100.00.00.00.0100.0100.00.0
Percentage of Assets0.10.10.00.00.04.05.90.0

Notes Payable Current

us-gaap:NotesPayableCurrent

us-gaap:NotesPayableCurrent


Notes
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value7.01.03.01.0261726221.0
Percentage of NotesPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.00.00.00.20.10.20.20.0

Operating Lease Liability Current

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OperatingLeaseLiabilityCurrent


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value89898993949293929193
Percentage of OperatingLeaseLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.60.60.60.70.70.60.70.70.70.8

Long Term Debt

us-gaap:LongTermDebt

us-gaap:LongTermDebt


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value35753568356636813745443234453424266926692668266726663127383733493489360136783680758758
Percentage of LongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets24.325.425.826.927.631.326.026.121.822.123.022.823.526.931.829.832.133.633.833.812.813.6

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

wlk:EightPointSevenThreePercentSeniorNotesDueTwentyTwentyTwo, us-gaap:SeniorNotes


Long
Period End2021-06-302021-03-31
Value3034
Percentage of LongTermDebt0.81.0
Percentage of Assets0.20.2
Percentage of Assets wlk:EightPointSevenThreePercentSeniorNotesDueTwentyTwentyTwo us-gaap:SeniorNotes0.00.0

wlk:FivePercentSeniorNotesDueTwentyFortySix, us-gaap:SeniorNotes


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value6786786776776776776776766766766766756756756756746746746736730.0
Percentage of LongTermDebt19.019.019.018.418.115.319.719.725.325.325.325.325.321.617.620.119.318.718.318.30.0
Percentage of Assets4.64.84.94.95.04.85.15.25.55.65.85.85.95.85.66.06.26.36.26.20.0
Percentage of Assets wlk:FivePercentSeniorNotesDueTwentyFortySix us-gaap:SeniorNotes0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

wlk:FourPointThreeSevenFivePercentSeniorNotesDueTwentyFortySeven, us-gaap:SeniorNotes


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value4914914914914914914914914914914914914914914910.0
Percentage of LongTermDebt13.713.813.813.313.111.114.314.318.418.418.418.418.415.712.80.0
Percentage of Assets3.33.53.53.63.63.53.73.74.04.14.24.24.34.24.10.0
Percentage of Assets wlk:FourPointThreeSevenFivePercentSeniorNotesDueTwentyFortySeven us-gaap:SeniorNotes0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

wlk:GoZoneSixPointFivePercentTaxExemptRevenueBondsDueTwentyThirtyFive, us-gaap:SeniorNotes


Long
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value89888888888888888888888888888888888888
Percentage of LongTermDebt2.42.32.02.62.63.33.33.33.33.32.82.32.62.52.42.42.411.611.6
Percentage of Assets0.60.60.60.70.70.70.70.80.80.80.80.70.80.80.80.80.81.51.6
Percentage of Assets wlk:GoZoneSixPointFivePercentTaxExemptRevenueBondsDueTwentyThirtyFive us-gaap:SeniorNotes0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

wlk:IkeZoneSixPointFivePercentTaxExemptRevenueBondsDueTwentyThirtyFive, us-gaap:SeniorNotes


Long
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value65656565656565656564656564646464646464
Percentage of LongTermDebt1.81.71.51.91.92.42.42.42.42.42.11.71.91.81.81.81.78.58.5
Percentage of Assets0.50.50.50.50.50.50.50.60.60.60.60.50.60.60.60.60.61.11.2
Percentage of Assets wlk:IkeZoneSixPointFivePercentTaxExemptRevenueBondsDueTwentyThirtyFive us-gaap:SeniorNotes0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

wlk:OnePointSixTwoFivePercentageSeniorNotesDueTwentyTwentyNineMemberDomain, us-gaap:SeniorNotes


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-07-172018-12-31
Value8228118498117767607747547790.0
Percentage of LongTermDebt23.022.723.822.020.717.122.522.00.00.0
Percentage of Assets5.65.86.15.95.75.45.85.80.00.0
Percentage of Assets wlk:OnePointSixTwoFivePercentageSeniorNotesDueTwentyTwentyNineMemberDomain us-gaap:SeniorNotes0.00.00.00.00.00.00.00.00.00.0

wlk:ThreePointFiveZeroPercentSeniorNotesDueTwentyThirtyTwo, us-gaap:SeniorNotes


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value2492492492492492492492492482482482482482482480.0
Percentage of LongTermDebt7.07.07.06.86.65.67.27.39.39.39.39.39.37.96.50.0
Percentage of Assets1.71.81.81.81.81.81.91.92.02.02.12.12.22.12.10.0
Percentage of Assets wlk:ThreePointFiveZeroPercentSeniorNotesDueTwentyThirtyTwo us-gaap:SeniorNotes0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

wlk:ThreePointSixPercentSeniorNotesDueTwentyTwentySix, us-gaap:SeniorNotes


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value7447447447437437437427427427427417417417407407397397397397390.0
Percentage of LongTermDebt20.820.920.920.219.816.821.521.727.827.827.827.827.823.719.322.121.220.520.120.10.0
Percentage of Assets5.15.35.45.45.55.25.65.76.16.16.46.36.56.46.16.66.86.96.86.80.0
Percentage of Assets wlk:ThreePointSixPercentSeniorNotesDueTwentyTwentySix us-gaap:SeniorNotes0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

wlk:ThreePointSixZeroPercentageSeniorNotesDueTwentyTwentyTwo, us-gaap:SeniorNotes


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value250250249249249249249249249249249249249249249248248248248248247247
Percentage of LongTermDebt7.07.07.06.86.65.67.27.39.39.39.39.39.38.06.57.47.16.96.76.732.732.7
Percentage of Assets1.71.81.81.81.81.81.91.92.02.12.12.12.22.12.12.22.32.32.32.34.24.4
Percentage of Assets wlk:ThreePointSixZeroPercentageSeniorNotesDueTwentyTwentyTwo us-gaap:SeniorNotes0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

wlk:ThreePointThreeSevenFiveDueTwentyThirty, us-gaap:SeniorNotes


Long
Period End2020-12-31
Value296
Percentage of LongTermDebt8.3
Percentage of Assets2.1
Percentage of Assets wlk:ThreePointThreeSevenFiveDueTwentyThirty us-gaap:SeniorNotes0.0

wlk:ThreePointThreeSevenFiveSeniorNotesDueTwentyThirty, us-gaap:SeniorNotes


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value2962962962962960.0
Percentage of LongTermDebt8.38.38.38.07.90.0
Percentage of Assets2.02.12.12.22.20.0
Percentage of Assets wlk:ThreePointThreeSevenFiveSeniorNotesDueTwentyThirty us-gaap:SeniorNotes0.00.00.00.00.00.0

wlk:WasteDisposalRevenueBondsDueTwentyTwentySeven, us-gaap:SeniorNotes


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-06-302015-12-31
Value111111111111111111111111111111101010101010
Percentage of LongTermDebt0.30.30.30.30.30.20.30.30.40.40.40.40.40.40.30.30.30.30.31.41.4
Percentage of Assets0.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.20.2
Percentage of Assets wlk:WasteDisposalRevenueBondsDueTwentyTwentySeven us-gaap:SeniorNotes0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Long Term Debt Noncurrent

us-gaap:LongTermDebtNoncurrent

us-gaap:LongTermDebtNoncurrent


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value3555354735663681374544323445342426692669266826672666266631273678764764764764763763763763763763763763763763764764764764764764
Percentage of LongTermDebtNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets24.225.225.826.927.631.326.026.121.822.123.022.823.523.025.933.813.713.814.114.814.714.917.518.318.819.520.621.522.421.522.223.023.423.824.325.9

Deferred Income Tax Liabilities Net

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:DeferredIncomeTaxLiabilitiesNet


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value13961385136814031354138612551159
Percentage of DeferredIncomeTaxLiabilitiesNet100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets9.59.99.910.210.09.89.510.0

Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent


Pension
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value3733783913503503523603283343363373033323423443673663623644341051071061271261231368.71
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.52.72.82.62.62.52.72.52.72.82.92.62.92.92.83.33.43.43.34.01.81.91.92.32.32.42.60.2

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

country:US, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Pension
Period End2020-12-312019-12-312018-12-31
Value555759
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent14.115.817.5
Percentage of Assets0.40.40.5
Percentage of Assets country:US us-gaap:OtherPostretirementBenefitPlansDefinedBenefit0.00.00.0

country:US, us-gaap:PensionPlansDefinedBenefit


Pension
Period End2020-12-312019-12-312018-12-31
Value183175160
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent46.848.647.5
Percentage of Assets1.31.31.4
Percentage of Assets country:US us-gaap:PensionPlansDefinedBenefit0.00.00.0

us-gaap:ForeignPlan, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Pension
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value5.05.03.03.03.0
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent1.31.40.90.90.8
Percentage of Assets0.00.00.00.00.0
Percentage of Assets us-gaap:ForeignPlan us-gaap:OtherPostretirementBenefitPlansDefinedBenefit0.00.00.00.00.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit


Pension
Period End2020-12-312019-12-312018-12-31
Value148123116
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent37.934.234.4
Percentage of Assets1.10.91.0
Percentage of Assets us-gaap:ForeignPlan us-gaap:PensionPlansDefinedBenefit0.00.00.0

Minority Interest

us-gaap:MinorityInterest

us-gaap:MinorityInterest


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value5685645355395365455435385405534864864845004954823683733683662982972962942932902902880.0
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets3.94.03.93.94.03.84.14.14.44.64.24.14.34.34.14.33.43.53.43.45.05.25.35.35.45.65.65.60.0

Other Liabilities Noncurrent

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OtherLiabilitiesNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value2022061991811881852021952001781791781631771581441401351211461391451501701621571741533132355150495148494950464745
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.41.51.41.31.41.31.51.51.61.51.51.51.41.51.31.31.31.31.11.32.42.52.73.13.03.03.43.00.70.80.91.31.41.41.51.41.41.51.51.51.51.5

Operating Lease Liability Noncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value3693833763733723463553302943110.0
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets2.52.72.72.72.72.42.72.52.42.60.0

Lessee Operating Lease Liability Payments Due Year Two

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo


Lessee
Period End2020-12-31
Value85
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo100.0
Percentage of Assets0.6

Lessee Operating Lease Liability Payments Due Year Three

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree


Lessee
Period End2020-12-31
Value69
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree100.0
Percentage of Assets0.5

Lessee Operating Lease Liability Payments Due Year Four

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour


Lessee
Period End2020-12-31
Value54
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour100.0
Percentage of Assets0.4

Lessee Operating Lease Liability Payments Due Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive


Lessee
Period End2020-12-31
Value42
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive100.0
Percentage of Assets0.3

Lessee Operating Lease Liability Payments Due After Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive


Lessee
Period End2020-12-31
Value171
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive100.0
Percentage of Assets1.2

Operating Lease Liability

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiability


Operating
Period End2020-12-312019-12-312019-09-302019-06-30
Value465448422385
Percentage of OperatingLeaseLiability100.0100.0100.0100.0
Percentage of Assets3.43.43.23.2

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue


Lessee
Period End2020-12-31
Value523
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue100.0
Percentage of Assets3.8

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount


Lessee
Period End2020-12-31
Value58
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount100.0
Percentage of Assets0.4

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-312009-12-312008-12-31
Value67716261604359495901589358605824571956325590560253625141487440683840365935233457343934063265322431232979291128332728256824182265211219891872203319521863175617291673150512841239
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets46.044.643.743.443.541.644.244.446.846.548.247.847.344.340.436.235.334.132.431.758.159.558.658.457.757.555.855.362.461.659.657.757.055.954.957.456.755.953.853.953.250.90.00.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-31
Value-24.0-24.0-24.03.03.03.03.02727272752434343303029
Percentage of StockholdersEquity-0.4-0.4-0.40.10.10.10.10.50.50.50.50.90.80.80.90.70.80.8
Percentage of Assets-0.2-0.2-0.20.00.00.00.00.20.20.20.20.40.40.40.40.30.30.3
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-56.0-70.0-64.0-69.0-87.0-106.0-74.0-66.0-50.0-64.0-62.0-24.0-33.03.07.0
Percentage of StockholdersEquity-0.8-1.1-1.1-1.2-1.5-1.8-1.3-1.1-0.9-1.1-1.1-0.4-0.60.10.1
Percentage of Assets-0.4-0.5-0.5-0.5-0.6-0.7-0.6-0.5-0.4-0.5-0.5-0.2-0.30.00.1
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedTranslationAdjustment


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-31
Value-32.0-46.0-40.0-72.0-90.0-109.0-77.0-93.0-77.0-91.0-89.0-76.0-76.0-40.0-36.0-43.0-84.0-150.0
Percentage of StockholdersEquity-0.5-0.7-0.7-1.2-1.5-1.8-1.3-1.6-1.3-1.6-1.6-1.4-1.4-0.8-0.7-1.1-2.2-4.3
Percentage of Assets-0.2-0.3-0.3-0.5-0.7-0.8-0.6-0.7-0.6-0.8-0.8-0.6-0.7-0.3-0.3-0.4-0.8-1.4
Percentage of Assets us-gaap:AccumulatedTranslationAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Stockholders Equity Including Portion Attributable To Noncontrolling Interest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-312011-12-31
Value733968256578648864376438640363626259618560766088584656415369455142094032389238243737370435613519341732703201312227282568241818721756
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets49.948.647.547.447.545.548.348.551.251.152.451.951.548.644.540.538.737.635.735.163.164.763.963.763.263.161.460.962.461.659.654.953.8

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value-56.0-70.0-64.0-69.0-87.0-106.0-74.0-66.0-50.0-64.0-62.0-24.0-33.03.07.0-13.946-53.824-103.636-121.306-108.126-82.101-90.663-129.292-121.865-119.924-137.662-79.433-36.433-0.132-1.782-2.616
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-0.8-1.0-1.0-1.1-1.4-1.6-1.2-1.0-0.8-1.0-1.0-0.4-0.60.10.1-0.3-1.3-2.6-3.1-2.8-2.2-2.4-3.6-3.5-3.5-4.2-2.5-1.2-0.0-0.1-0.1
Percentage of Assets-0.4-0.5-0.5-0.5-0.6-0.7-0.6-0.5-0.4-0.5-0.5-0.2-0.30.00.1-0.1-0.5-1.0-1.1-1.0-1.4-1.6-2.3-2.2-2.2-2.7-1.5-0.7-0.0-0.0-0.1
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-312011-12-31
Value571564569563558551553561558553556562558555555558555552550546545542542540537534530527523519511495467
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest7.88.38.78.78.78.68.68.88.98.99.29.29.59.810.312.313.213.714.114.314.614.715.215.415.716.316.616.919.220.221.126.526.6
Percentage of Assets3.94.04.14.14.13.94.24.34.64.64.84.84.94.84.65.05.15.15.15.09.29.59.79.89.910.310.210.312.012.412.614.514.3
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-312011-12-31
Value1.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.3471.3471.3471.3471.3471.3471.3471.3471.3471.3471.3471.3471.3471.3471.3471.3461.3451.332
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.10.10.1
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NoncontrollingInterest


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-312012-12-312011-12-31
Value5685645355395365455435385405534864864845004954823683733683662982972962942932902902880.00.00.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest7.78.38.18.38.38.58.58.58.68.98.08.08.38.99.210.68.79.39.59.68.08.08.38.48.68.99.19.20.00.00.0
Percentage of Assets3.94.03.93.94.03.84.14.14.44.64.24.14.34.34.14.33.43.53.43.45.05.25.35.35.45.65.65.60.00.00.0
Percentage of Assets us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-312011-12-31
Value663361455938586358405860575757245600551354775400512548744613383736533525341233373296320931093022286326792555239422482095195413991299
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest90.490.090.390.490.791.089.990.089.589.190.188.787.786.485.984.386.887.487.787.388.286.687.385.983.881.979.876.782.481.680.874.774.0
Percentage of Assets45.143.742.942.843.141.443.443.745.845.547.246.145.242.038.234.133.632.931.330.655.756.155.854.752.951.749.046.751.550.248.141.039.8
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-312011-12-31
Value-378.0-379.0-401.0-409.0-411.0-413.0-377.0-396.0-390.0-371.0-382.0-337.0-289.0-292.0-302.0-314.694-316.152-316.396-319.339-319.98-322.802-256.459-258.312-217.542-158.472-98.275-96.372-53.248-45.181-46.22-46.22-13.302-2.518
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-5.2-5.6-6.1-6.3-6.4-6.4-5.9-6.2-6.2-6.0-6.3-5.5-4.9-5.2-5.6-6.9-7.5-7.8-8.2-8.4-8.6-6.9-7.3-6.2-4.6-3.0-3.0-1.7-1.7-1.8-1.9-0.7-0.1
Percentage of Assets-2.6-2.7-2.9-3.0-3.0-2.9-2.8-3.0-3.2-3.1-3.3-2.9-2.5-2.5-2.5-2.8-2.9-3.0-2.9-2.9-5.5-4.5-4.6-3.9-2.9-1.9-1.8-1.0-1.0-1.1-1.1-0.4-0.1
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value1000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01347000.01347000.01347000.01347000.01347000.01347000.01347000.01347000.01347000.01347000.01347000.01347000.01347000.01347000.01347000.0673000.0673000.0673000.0672000.0672000.0670000.0669000.0667000.0666000.0666000.0666000.0663000.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Additional Paid In Capital Common Stock

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:AdditionalPaidInCapitalCommonStock


Additional
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value571564569563558551553561558553556562558555555558555552550546545542542540537534530527523519512509506503496486481474467466464452
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.94.04.14.14.13.94.24.34.64.64.84.84.94.84.65.05.15.15.15.09.29.59.79.89.910.310.210.312.012.412.613.013.714.114.513.714.014.214.314.514.815.3

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


Retained
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value663361455938586358405860575757245600551354775400512548744613383736533525341233373296320931093022286326792555239422482095195417981643151013991567149213821299127712141058
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 Assets45.143.742.942.843.141.443.443.745.845.547.246.145.242.038.234.133.632.931.330.655.756.155.854.752.951.749.046.751.550.248.145.844.342.441.044.243.441.539.839.838.635.8

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value-56.0-70.0-64.0-69.0-87.0-106.0-74.0-66.0-50.0-64.0-62.0-24.0-33.03.07.0-13.946-53.824-103.636-121.306-108.126-82.101-90.663-129.292-121.865-119.924-137.662-79.433-36.433-0.132-1.782-2.616-10.921-11.726-11.032-10.84-8.163-9.865-9.07
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-0.4-0.5-0.5-0.5-0.6-0.7-0.6-0.5-0.4-0.5-0.5-0.2-0.30.00.1-0.1-0.5-1.0-1.1-1.0-1.4-1.6-2.3-2.2-2.2-2.7-1.5-0.7-0.0-0.0-0.1-0.3-0.3-0.3-0.3-0.2-0.3-0.3

Treasury Stock Value

us-gaap:TreasuryStockValue

us-gaap:TreasuryStockValue


Treasury
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value3783794014094114133773963903713823372892923023143163163193193222562582171589896534546463226131313132.5182.518
Percentage of TreasuryStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.62.72.93.03.02.92.83.03.23.13.32.92.52.52.52.82.93.02.92.95.54.54.63.92.91.91.81.01.01.11.10.80.70.40.40.40.40.10.1

Minority Interest

us-gaap:MinorityInterest

us-gaap:MinorityInterest


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value5685645355395365455435385405534864864845004954823683733683662982972962942932902902880.0
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets3.94.03.93.94.03.84.14.14.44.64.24.14.34.34.14.33.43.53.43.45.05.25.35.35.45.65.65.60.0

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

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue


Adjustments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value7.08.07.08.06.06.06.07.05.05.04.04.03.7773.6763.5383.009-1.3132.3752.8342.5691.8463.1962.7594.0412.4384.5793.2135.734
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value7.08.07.08.06.06.06.07.05.05.04.04.03.7773.6763.5383.009-4.0752.3752.8342.5691.8463.1962.7594.0412.4384.5793.2135.734
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0310.4100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Minority Interest Decrease From Distributions To Noncontrolling Interest Holders

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders


Minority
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value111110.01910.010.0228.08.08.0227.07.2334.734114.4634.3374.2164.0993.9853.9743.7643.663.558
Percentage of MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


Minority
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value111110.01910.010.0228.08.08.0227.07.2334.734114.4634.3374.2164.0993.9853.9743.7643.663.5582.204
Percentage of MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value61726543135744861333501320147254606324225575482322157289174240128237405244190256343219212205292139116123178212110117119844068159
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues21.611.221.918.826.23.217.724.214.97.312.726.914.510.528.622.916.38.116.713.622.213.224.134.220.717.322.627.422.020.721.629.114.813.415.421.723.310.613.712.39.24.78.620.4

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-129.0-135.0-143.0-106.0-128.0-132.0-1006.0-185.0-288.0-475.0-193.0-207.0-176.0-178.0-192.565-148.962-162.454-148.019-173.715-2262.66820-147.221-452.583-379.305-77.633-96.655-121.027-659.702137-130.044-307.591-305.761-267.562-121.324-272.387-96.844-30.558-67.182-63.973-72.464-38.115-28.233-37.356-20.554
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-4.5-5.7-7.3-5.6-7.5-6.8-53.4-9.0-13.4-23.5-9.7-9.2-7.9-8.3-9.6-7.1-8.2-7.6-10.0-176.91.9-15.1-45.9-31.9-6.6-8.8-10.7-52.613.8-12.7-32.3-30.4-28.5-14.0-34.0-11.8-3.3-6.5-7.4-7.5-4.1-3.3-4.7-2.6

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-38.0-34.0-202.0-145.0-752.0883-39.0717-69.021-96.0-89.0-511.0-731.0466-59.836-146.925-99.679-27.2841696-103.368-33.121-83.689-90.024-87.435-25.664-67.268256-13.881-11.119-27.893-20.204-24.052-7.119-259.4346.7653326120.03311111710.695
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-1.3-1.4-10.3-7.6-44.045.7-2.134.7-3.21.0-4.8-3.9-22.9-34.023.2-2.8-7.4-5.1-1.6132.7-9.5-3.4-8.5-7.6-7.4-2.3-5.920.5-1.4-1.1-2.9-2.0-2.6-0.8-32.40.83.72.51.50.01.21.421.50.1

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

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value4499397110-429.0809-709.01028-36.0-308.0
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues15.73.94.95.8-25.141.9-37.749.8-1.7-15.2

Deferred Income Tax Expense Benefit

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:DeferredIncomeTaxExpenseBenefit


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value1410.0-8.058-30.012620190.015-12.0292916-557.2948.33221-6.273-5.2332.924458324.497-2.2435.3312415118.27510233029-10.178-2.3355.9290.791-5.3213.4868.5337.4160.8617.227
Percentage of DeferredIncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Depreciation Depletion And Amortization

us-gaap:DepreciationDepletionAndAmortization

us-gaap:DepreciationDepletionAndAmortization


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value20219519619619119018817817617116816115615615215314415015094676565616058605348454140403534383535333232323232
Percentage of DepreciationDepletionAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DepreciationDepletionAndAmortization us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value2.02.02.02.02.02.02.02.02.02.03.02.03.04.01.2961.1152.6331.9561.081.4440.7460.730.6260.138
Percentage of DepreciationDepletionAndAmortization1.01.01.01.01.01.11.11.11.11.21.81.21.92.60.90.71.81.30.71.51.11.11.00.2

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

us-gaap:OperatingSegments, wlk:Olefins


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value37363534353536353635363533343335354140363028282727
Percentage of DepreciationDepletionAndAmortization18.318.517.917.318.318.419.119.720.520.521.421.721.221.822.122.824.327.326.938.945.043.743.945.245.8

us-gaap:OperatingSegments, wlk:Vinyls


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value163157159160154153150141138134129124120118117117106107109563636363332
Percentage of DepreciationDepletionAndAmortization80.780.581.181.680.680.579.879.278.478.476.877.076.975.677.076.573.971.472.659.653.955.255.554.654.0

Increase Decrease In Accounts Payable

us-gaap:IncreaseDecreaseInAccountsPayable

us-gaap:IncreaseDecreaseInAccountsPayable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value5775509.010.0-2.0-40.0-9.0-33.0-7.0-136.0472.0-13.025-21.1313249-22.159-20.28530238.907-28.1841.298-3.6251.532-76.7797.716-29.706-5.69814-9.5161422-18.60811-28.13829-28.9241-22.48155-33.399
Percentage of IncreaseDecreaseInAccountsPayable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Inventories

us-gaap:IncreaseDecreaseInInventories

us-gaap:IncreaseDecreaseInInventories


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value134279-21.0-95.08.024-11.0-106.0-19.08133-32.04155-2.738-40.4511955-6.595-28.159406.469-55.784-14.136-35.97929-46.132-1.49-32.872024-6.8838.77627-35.587-15.281-68.37224-41.9561-3.77194-14.222
Percentage of IncreaseDecreaseInInventories100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Other Operating Capital Net

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value4525-4.01419327.06.0362219212816304.25440-10.015230.98658.9540.659-3.143-1.1036.201-0.2911.7122.0581.3854.168-3.6315.721531.56318-1.036-3.7244.6293.9436.131-4.6361.019-0.345
Percentage of IncreaseDecreaseInOtherOperatingCapitalNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value61726543135744861333501320147254606324225575482322157289174240128237405244190256343219212205292139116123178212110117119844068159
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues21.611.221.918.826.23.217.724.214.97.312.726.914.510.528.622.916.38.116.713.622.213.224.134.220.717.322.627.422.020.721.629.114.813.415.421.723.310.613.712.39.24.78.620.4

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value5222421135715145721581197212330827828780221015213898651111231101832051461831671691581701701451239586115872667818384625617
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues18.310.35.83.00.97.53.87.65.63.66.213.712.413.339.910.07.77.15.75.110.212.611.215.517.313.316.113.417.015.418.017.015.514.311.910.612.68.53.17.08.89.610.68.07.02.3

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value522242571514515811972308278287
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues18.310.33.00.97.57.65.63.613.712.413.3
Percentage of Revenues us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.0

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value5362531236924157851661298213131828829781621915914410570115128116188210150187170169158170170
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues18.710.76.33.61.48.14.58.06.04.06.614.112.913.840.610.48.17.46.15.510.613.211.815.917.713.616.513.617.015.418.017.0

Share Based Compensation

us-gaap:ShareBasedCompensation

us-gaap:ShareBasedCompensation


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value8.08.08.07.08.06.06.06.06.07.06.05.05.06.06.265.9724.4656.3037.6051.5042.7812.3032.6522.6392.5652.342.4052.3452.2892.2222.1621.681.6251.4991.4871.5151.4741.6511.6291.6351.6241.5031.5981.587
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-129.0-135.0-143.0-106.0-128.0-132.0-1006.0-185.0-288.0-475.0-193.0-207.0-176.0-178.0-192.565-148.962-162.454-148.019-173.715-2262.66820-147.221-452.583-379.305-77.633-96.655-121.027-659.702137-130.044-307.591-305.761-267.562-121.324-272.387-96.844-30.558-67.182-63.973-72.464-38.115-28.233-37.356-20.554
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-4.5-5.7-7.3-5.6-7.5-6.8-53.4-9.0-13.4-23.5-9.7-9.2-7.9-8.3-9.6-7.1-8.2-7.6-10.0-176.91.9-15.1-45.9-31.9-6.6-8.8-10.7-52.613.8-12.7-32.3-30.4-28.5-14.0-34.0-11.8-3.3-6.5-7.4-7.5-4.1-3.3-4.7-2.6

Payments To Acquire Property Plant And Equipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value129141122112127164183193208203195195158154162133146134161180150136162125108951199410611018020014715015194756465423828
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Payments
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value1.03.02.02.01.00.03.02.01.01.00.04.02.06.744.8948.5120.8541.4210.1780.4810.92
Percentage of PaymentsToAcquirePropertyPlantAndEquipment0.82.51.81.60.60.01.61.00.50.50.02.51.34.13.75.80.60.90.10.30.7

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, wlk:Olefins


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value24231416172730253725293326222620232538969395986981
Percentage of PaymentsToAcquirePropertyPlantAndEquipment18.616.311.514.313.416.516.413.017.812.314.916.916.514.316.615.716.218.924.053.562.169.860.655.875.4

us-gaap:OperatingSegments, wlk:Vinyls


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value10411810594108136153165169177165162128130129107114108121835640615324
Percentage of PaymentsToAcquirePropertyPlantAndEquipment80.683.786.183.985.082.983.685.581.287.284.683.181.084.479.380.678.080.575.546.437.529.537.742.722.7

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-38.0-34.0-202.0-145.0-752.0883-39.0717-69.021-96.0-89.0-511.0-731.0466-59.836-146.925-99.679-27.2841696-103.368-33.121-83.689-90.024-87.435-25.664-67.268256-13.881-11.119-27.893-20.204-24.052-7.119-259.4346.7653326120.03311111710.695
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-1.3-1.4-10.3-7.6-44.045.7-2.134.7-3.21.0-4.8-3.9-22.9-34.023.2-2.8-7.4-5.1-1.6132.7-9.5-3.4-8.5-7.6-7.4-2.3-5.920.5-1.4-1.1-2.9-2.0-2.6-0.8-32.40.83.72.51.50.01.21.421.50.1

Proceeds From Issuance Of Long Term Debt

us-gaap:ProceedsFromIssuanceOfLongTermDebt

us-gaap:ProceedsFromIssuanceOfLongTermDebt


Proceeds
Period End2020-09-302017-12-312016-12-312015-12-312013-12-312012-12-312011-12-31
Value0.07450.00.00.00.00.0
Percentage of ProceedsFromIssuanceOfLongTermDebt0.0100.00.00.00.00.00.0

Repayments Of Long Term Debt

us-gaap:RepaymentsOfLongTermDebt

us-gaap:RepaymentsOfLongTermDebt


Repayments
Period End2020-12-312020-09-302013-12-312012-12-312011-12-31
Value1541000.00.00.0
Percentage of RepaymentsOfLongTermDebt100.0100.00.00.00.0

Payments Of Dividends Common Stock

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:PaymentsOfDividendsCommonStock


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value34353534343434333233333327272627242424242323232321212122161615151212263124.9244.9144.9064.9134.2284.2184.2074.201
Percentage of PaymentsOfDividendsCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Payments For Repurchase Of Common Stock

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock


Payments
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-312013-09-302012-12-312012-09-302011-12-31
Value0.00.00.0540.010.0200.057490.00.00.00.00.00.002660.6794851602.0439.495136.1260.00.02.499
Percentage of PaymentsForRepurchaseOfCommonStock0.00.00.0100.00.0100.0100.00.0100.0100.00.00.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0

Effective Income Tax Rate Continuing Operations

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:EffectiveIncomeTaxRateContinuingOperations


Effective
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-31
Value22.822.2-27.8-3.8-0.3530.2310.2320.2740.1870.2440.2290.3310.30.279-0.1030.3650.350.2420.3190.3430.4220.0040.345-0.0030.3610.355-0.012-0.0020.3490.008-0.0020.352
Percentage of EffectiveIncomeTaxRateContinuingOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312012-06-302012-03-312011-12-312010-12-31
Value67.3960.2954.8241.0433.7630.0724.8937.9831.428.0526.723.2620.81
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Liabilities

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxLiabilities


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value13531227114810981638540595461351356342
Percentage of DeferredTaxLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Net

us-gaap:DeferredTaxAssetsNet

us-gaap:DeferredTaxAssetsNet


Deferred
Period End2020-12-312019-12-312015-12-312014-12-31
Value15283532
Percentage of DeferredTaxAssetsNet100.0100.0100.0100.0

Deferred Tax Assets Valuation Allowance

us-gaap:DeferredTaxAssetsValuationAllowance

us-gaap:DeferredTaxAssetsValuationAllowance


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value333047565316111111
Percentage of DeferredTaxAssetsValuationAllowance100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStockDividendsPerShareDeclared

us-gaap:CommonStockDividendsPerShareDeclared


Common
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value0.270.270.270.26250.26250.26250.26250.250.250.250.250.210.210.210.210.19060.19060.19060.19060.18150.18150.18150.18150.1650.1650.1650.1650.1260.1260.2250.2250.18750.18750.18750.18750.07380.07380.07380.07380.06350.06350.06350.06350.0575
Percentage of CommonStockDividendsPerShareDeclared100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrumentRedemptionPricePercentageOfPrincipalAmountRedeemed us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:DebtInstrumentRedemptionPricePercentageOfPrincipalAmountRedeemed

wlk:GoZoneSixAndOneHalfPercentSeniorNotesDueTwentyTwentyNine, us-gaap:SeniorNotes


Debt
Period End2020-08-01
Value100.0
Percentage of DebtInstrumentRedemptionPricePercentageOfPrincipalAmountRedeemed100.0

us-gaap:DividendsCommonStockCash

us-gaap:DividendsCommonStockCash


Dividends
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value34353434343332333333272726272424242423232323212121221616
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsCommonStockCash us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Dividends
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value34353434343332333333272726272424242423232323212121221616
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EffectOfExchangeRateOnCashAndCashEquivalents

us-gaap:EffectOfExchangeRateOnCashAndCashEquivalents


Effect
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value-1.0-3.04.03.0-3.0-5.01.0-1.0-4.0-6.04.04.0098.305103.442-9.7590.932-2.3723.858-0.664-1.261.189-3.189-0.824-3.6870.00.00.0
Percentage of EffectOfExchangeRateOnCashAndCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:EnvironmentalExitCostsAnticipatedCost us-gaap:Range, us-gaap:EnvironmentalRemediationContingency, us-gaap:RegulatoryAgency

us-gaap:EnvironmentalExitCostsAnticipatedCost

srt:Maximum, wlk:OperationandMaintenance, wlk:EnvironmentalProtectionAgency


Environmental
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value03000000.00003000000.00003000000.00
Percentage of EnvironmentalExitCostsAnticipatedCost0.0100.00.00.00.0100.00.00.00.0100.00.0

srt:Minimum, wlk:OperationandMaintenance, wlk:EnvironmentalProtectionAgency


Environmental
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value01000000.00001000000.00001000000.00
Percentage of EnvironmentalExitCostsAnticipatedCost0.033.30.00.00.033.30.00.00.033.30.0

us-gaap:EnvironmentalExitCostsReasonablyPossibleAdditionalLoss us-gaap:Range

us-gaap:EnvironmentalExitCostsReasonablyPossibleAdditionalLoss

srt:Maximum


Environmental
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value0.01300.00.00.01300.00.00.013020
Percentage of EnvironmentalExitCostsReasonablyPossibleAdditionalLoss0.0100.00.00.00.0100.00.00.00.0100.0100.0

srt:Minimum


Environmental
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value0.065-5.00.00.0705.00.00.06510.0
Percentage of EnvironmentalExitCostsReasonablyPossibleAdditionalLoss0.050.00.00.00.053.80.00.00.050.050.0

us-gaap:ExtinguishmentOfDebtAmount us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:ExtinguishmentOfDebtAmount

wlk:GoZoneSixAndOneHalfPercentSeniorNotesDueTwentyTwentyNine, us-gaap:SeniorNotes


Extinguishment
Period End2020-08-01
Value100
Percentage of ExtinguishmentOfDebtAmount100.0

wlk:GoZoneSixPointFivePercentTaxExemptRevenueBondsDueTwentyThirtyFive, us-gaap:SeniorNotes


Extinguishment
Period End2020-11-30
Value89
Percentage of ExtinguishmentOfDebtAmount0.0

wlk:IkeZoneSixPointFivePercentTaxExemptRevenueBondsDueTwentyThirtyFive, us-gaap:SeniorNotes


Extinguishment
Period End2020-11-30
Value65
Percentage of ExtinguishmentOfDebtAmount0.0

us-gaap:ExtinguishmentOfDebtAmount us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType

wlk:GoZoneSixPointFivePercentTaxExemptRevenueBondsDueTwentyThirtyFive, us-gaap:SeniorNotes, us-gaap:SubsequentEvent


Extinguishment
Period End2020-11-01
Value89
Percentage of ExtinguishmentOfDebtAmount0.0

wlk:IkeZoneSixPointFivePercentTaxExemptRevenueBondsDueTwentyThirtyFive, us-gaap:SeniorNotes, us-gaap:SubsequentEvent


Extinguishment
Period End2020-11-01
Value65
Percentage of ExtinguishmentOfDebtAmount0.0

us-gaap:GainLossOnDispositionOfAssets

us-gaap:GainLossOnDispositionOfAssets


Gain
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-3000000.0-4000000.0-7000000.0-17000000.0-4000000.0-5000000.0-17000000.0-5000000.0-7000000.0-20000000.0-18000000.0-11000000.0-9000000.0-6000000.0-7681000.0-7109000.0-4311000.0-2899000.0-2088000.0-3210000.0-3022000.0-309000.0-8301000.0-1700000.0-757000.0-133000.0-1546000.0-763000.0-1017000.0-855000.0-360000.0-554000.0-1738000.0-2387000.0-1941000.0-1257000.0-207000.0-481000.0-353000.0-880000.0-98000.0-44000.031000.0-663000.0
Percentage of GainLossOnDispositionOfAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GoodwillForeignCurrencyTranslationGainLoss

us-gaap:GoodwillForeignCurrencyTranslationGainLoss


Goodwill
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-312017-09-302017-06-302017-03-312016-12-31
Value3.0-1.08.05.05.0-9.05.0-3.02.01.0-6.02.0-0.1844.3471.7094.128-3.494
Percentage of GoodwillForeignCurrencyTranslationGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GoodwillForeignCurrencyTranslationGainLoss us-gaap:StatementBusinessSegments

wlk:Vinyls


Goodwill
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-312017-09-302017-06-302017-03-312016-12-31
Value3.0-1.08.05.05.0-9.05.0-3.02.01.0-6.02.0-0.1844.3471.7094.128-3.494
Percentage of GoodwillForeignCurrencyTranslationGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccountsAndOtherReceivables

us-gaap:IncreaseDecreaseInAccountsAndOtherReceivables


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value225120-90.0123-112.0240-64.0-114.07841-194.0-20.0139133-145.153437764-142.602193636-7.785-77.31740-18.517-27.106-33.42232-5.332-4.044-42.62537.9177.282-24.837-26.61537-54.7583220472.883-66.19
Percentage of IncreaseDecreaseInAccountsAndOtherReceivables100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccruedLiabilities

us-gaap:IncreaseDecreaseInAccruedLiabilities


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value88-84.0328971-146.0212848-110.0-17.079-22.0-48.05714434-121.851-24.8417452-54.2573.2532919-59.585-36.9769818-4.9520.60816-17.712-14.67122615-21.6474.4552612-25.351-7.453.492
Percentage of IncreaseDecreaseInAccruedLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets


Increase
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value2712-8.023-7.0-1.012-4.0-10.015-2.0
Percentage of IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-06-302015-03-31
Value1819-32.0-8.0-16.014-2.0-51.020-36.0-4.019394917-14.056259.1473819-58.656
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedTranslationAdjustment


Other
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value1819-32.016-16.014-2.0-17.00.0-36.0-4.07.437394917-50.276.453-13.522-15.72-1.9217-59.698-22.246-37.7920.808-0.898-0.7630.546-1.39-0.57
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax100.0100.0100.0-200.0100.0100.0100.033.30.0100.0100.037.8100.5100.299.9357.625.4-147.659.30.00.090.6101.80.00.00.00.00.00.00.00.0

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value123.010.015-25.0-9.015-2.00.0-37.0-6.0
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value-3000000.010000000.0-11000000.0-9000000.0-5000000.07000000.0-5000000.07000000.02000000.001000000.003000000.0-4000000.03397000.076000.0-255000.02000000.0000
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value14-6.05.01819-32.0-8.0-16.014-2.0-38.09.0-36.0-4.0
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedTranslationAdjustment


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value14-6.0321819-32.016-16.014-2.0-13.00.0-36.0-4.0
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0640.0100.0100.0100.0-200.0100.0100.0100.034.20.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossTaxPortionAttributableToNoncontrollingInterest

us-gaap:OtherComprehensiveIncomeLossTaxPortionAttributableToNoncontrollingInterest


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value1000000.000001000000.001000000.001000000.01000000.01000000.01000000.01000000.0-1467000.0846000.0808000.0813000.0279000.0000
Percentage of OtherComprehensiveIncomeLossTaxPortionAttributableToNoncontrollingInterest100.00.00.00.00.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:OtherOperatingActivitiesCashFlowStatement

us-gaap:OtherOperatingActivitiesCashFlowStatement


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value193.0-2.0205.0-2.0-3.0-12.07.09.00.0-20.07.0-7.03.659-4.7-1.124-0.835-1.883-0.3770.5490.661-3.2223.1610.977-0.5540.770.031-0.970.4440.3910.00.00.0
Percentage of OtherOperatingActivitiesCashFlowStatement100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDiluted

us-gaap:ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDiluted


Participating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value2000000.01000000.0001000000.0001000000.0-1000000.0-1000000.09000000.0-1000000.0-2000000.0-2000000.09630000.0-1117000.0-819000.0-694000.0653000.0294000.0-504000.0-549000.02347000.0195000.0-253000.0
Percentage of ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDiluted100.0100.00.00.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForProceedsFromOtherInvestingActivities

us-gaap:PaymentsForProceedsFromOtherInvestingActivities


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-2.0-13.03.0-1.01.07.06.0-11.02.0-6.0-7.0-6.0-1.0-2.0-3.01.0-1.0-1.0
Percentage of PaymentsForProceedsFromOtherInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsOfDividendsMinorityInterest

us-gaap:PaymentsOfDividendsMinorityInterest


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value11111610.01910.010.010.0228.08.08.0227.0
Percentage of PaymentsOfDividendsMinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireBusinessesGross us-gaap:BusinessAcquisition

us-gaap:PaymentsToAcquireBusinessesGross

wlk:BoralTargetCompanies


Payments
Period End2021-06-20
Value2150
Percentage of PaymentsToAcquireBusinessesGross100.0

us-gaap:PaymentsToAcquireBusinessesGross us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType

wlk:DimexLLC, us-gaap:SubsequentEvent


Payments
Period End2021-08-02
Value170
Percentage of PaymentsToAcquireBusinessesGross0.0

wlk:LascoFittingsInc, us-gaap:SubsequentEvent


Payments
Period End2021-07-04
Value253
Percentage of PaymentsToAcquireBusinessesGross0.0

us-gaap:PaymentsToAcquireInterestInSubsidiariesAndAffiliates

us-gaap:PaymentsToAcquireInterestInSubsidiariesAndAffiliates


Payments
Period End2021-06-302021-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-31
Value0.07.01616154.00.00.0
Percentage of PaymentsToAcquireInterestInSubsidiariesAndAffiliates0.0100.0100.0100.0100.0100.00.00.0

us-gaap:ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital

us-gaap:ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital


Proceeds
Period End2020-12-312020-09-302020-06-302020-03-312019-06-302019-03-31
Value0.05.00.0390.00.0
Percentage of ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital0.0100.00.0100.00.00.0

us-gaap:ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

wlk:LACCLLC


Proceeds
Period End2020-12-312020-09-302020-06-302020-03-31
Value0.05.00.039
Percentage of ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital0.0100.00.0100.0

us-gaap:ProceedsFromIssuanceOfDebt

us-gaap:ProceedsFromIssuanceOfDebt


Proceeds
Period End2021-03-31
Value4.0
Percentage of ProceedsFromIssuanceOfDebt100.0

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value2.08.03.02.0-11.08.0-10.01.00.02.01.00.03.05.08.7960.7270.1231.3542.162.040.5120.288
Percentage of ProceedsFromPaymentsForOtherFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess

us-gaap:ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess


Proceeds
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value0-3000000.07000000.0-21000000.06000000.0-8000000.0
Percentage of ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess0.0100.0100.0100.0100.0100.0

us-gaap:RestructuringCharges

us-gaap:RestructuringCharges


Restructuring
Period End2020-12-312019-12-312019-09-30
Value0.04.03.0
Percentage of RestructuringCharges0.0100.0100.0

us-gaap:RestructuringCostsAndAssetImpairmentCharges

us-gaap:RestructuringCostsAndAssetImpairmentCharges


Restructuring
Period End2020-12-312020-09-30
Value08000000.0
Percentage of RestructuringCostsAndAssetImpairmentCharges0.0100.0

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation


Stock
Period End2021-06-302021-03-312020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value1.09.00.02.00.00.00.01.00.02.06.013-3.6810.1231.3546.0781.1690.4590.0220.0790.1530.6740.1570.0221.3152.0292.158
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation100.0100.00.0100.00.00.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value-13.0-2.0-1.0-8.0-3.0-1.0-8.023-1.0-1.0-4.0-8.4414.151-0.121-1.5898.197-1.6530.077-1.831-0.04-0.2220.0670.060.011-0.1130.992.157
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation-144.40.00.0-400.00.00.00.02300.00.0-50.0-66.7-63.9-112.8-98.4-117.4134.9-141.416.8-8322.7-50.6-145.19.938.250.0-8.648.8100.0

us-gaap:TreasuryStock


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value1.0222.02.0184.01.011121.03.010.021-7.8320.2442.943-2.1192.8220.3821.8530.1190.3750.6070.0970.0111.428
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation100.0244.40.00.0900.00.00.00.01200.00.0150.0166.7163.9212.8198.4217.4-34.9241.483.28422.7150.6245.190.161.850.0108.6

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value734860.0527840.0252570.0143150.0205610.0336260.0365150.0385440.0624960.0682320.0
Percentage of WeightedAverageNumberDilutedSharesOutstandingAdjustment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wlk:CARESActTaxBenefit

wlk:CARESActTaxBenefit


C
Period End2020-12-312020-09-302020-06-30
Value0.0276.0
Percentage of CARESActTaxBenefit0.0100.0100.0

wlk:IncreaseDecreaseinCapitalExpenditureAccrual

wlk:IncreaseDecreaseinCapitalExpenditureAccrual


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-61.032-51.078-2.0-27.0-10.015-1.010.05610.0-28.010.00.918-2.7662.6078.241-30.878-26.4483514
Percentage of IncreaseDecreaseinCapitalExpenditureAccrual100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wlk:NetIncomeLossAvailableToCommonStockholders

wlk:NetIncomeLossAvailableToCommonStockholders


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value52024111357141457215711871122307276285797209152137986511012210818320414618216716915717016914512294861148726678082
Percentage of NetIncomeLossAvailableToCommonStockholders100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wlk:NoncontrollingInterestIncreaseFromConsolidatingPreviouslyUnconsolidatedSubsidiary

wlk:NoncontrollingInterestIncreaseFromConsolidatingPreviouslyUnconsolidatedSubsidiary


Noncontrolling
Period End2021-03-31
Value30
Percentage of NoncontrollingInterestIncreaseFromConsolidatingPreviouslyUnconsolidatedSubsidiary100.0

wlk:NoncontrollingInterestIncreaseFromConsolidatingPreviouslyUnconsolidatedSubsidiary us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


Noncontrolling
Period End2021-03-31
Value30
Percentage of NoncontrollingInterestIncreaseFromConsolidatingPreviouslyUnconsolidatedSubsidiary100.0

wlk:PaymentsToAcquireAdditionalInterestsInSubsidiariesAndProceedsFromEquityMethodInvestmentDistributionReturnOfCapital

wlk:PaymentsToAcquireAdditionalInterestsInSubsidiariesAndProceedsFromEquityMethodInvestmentDistributionReturnOfCapital


Payments
Period End2021-06-302021-03-312020-06-302020-03-31
Value2000000.07000000.00-39000000.0
Percentage of PaymentsToAcquireAdditionalInterestsInSubsidiariesAndProceedsFromEquityMethodInvestmentDistributionReturnOfCapital100.0100.00.0100.0

wlk:RestructuringTransactionandIntegrationCost

wlk:RestructuringTransactionandIntegrationCost


Restructuring
Period End2020-09-302020-06-302019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value342.08.02.0225.08.07.0
Percentage of RestructuringTransactionandIntegrationCost100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccountsPayableRelatedPartiesCurrent

us-gaap:AccountsPayableRelatedPartiesCurrent


Accounts
Period End2021-06-302021-03-312019-12-31
Value1.01.012
Percentage of AccountsPayableRelatedPartiesCurrent100.0100.0100.0

us-gaap:AccountsPayableRelatedPartiesCurrentAndNoncurrent us-gaap:CounterpartyName, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:AccountsPayableRelatedPartiesCurrentAndNoncurrent

wlk:AmericanAirLiquideHoldings, srt:Director


Accounts
Period End2020-12-312019-12-312018-12-31
Value3.02.04.0
Percentage of AccountsPayableRelatedPartiesCurrentAndNoncurrent100.0100.0100.0

us-gaap:AccountsPayableTradeCurrent

us-gaap:AccountsPayableTradeCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value629568529446427408435475494525504
Percentage of AccountsPayableTradeCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccountsReceivableGrossCurrent

us-gaap:AccountsReceivableGrossCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value149612651086968926100794810521152105596911711198111697411111031951827923507465438495575500525576445415410404441384388375409432391353
Percentage of AccountsReceivableGrossCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccountsReceivableRelatedPartiesCurrent

us-gaap:AccountsReceivableRelatedPartiesCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value2.02.09.04.05.05.0126.08.07.06.01112139.07.6019.1059.9657.9820.00.00.00.4490.4370.6310.30.2870.3150.3330.310.2970.2580.2260.1230.1340.1220.475
Percentage of AccountsReceivableRelatedPartiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccountsReceivableRelatedPartiesCurrent us-gaap:CounterpartyName, us-gaap:RelatedPartyTransactionsByRelatedParty

wlk:AmericanAirLiquideHoldings, srt:Director


Accounts
Period End2020-12-312019-12-312018-12-31
Value1.00.01.0
Percentage of AccountsReceivableRelatedPartiesCurrent11.10.016.7

wlk:VinylSolutionsLLC, srt:AffiliatedEntity


Accounts
Period End2020-12-312019-12-312018-12-312017-12-31
Value1.02.03.07.0
Percentage of AccountsReceivableRelatedPartiesCurrent11.116.750.077.8

us-gaap:AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax us-gaap:RetirementPlanType

us-gaap:AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value0.03.05.00.01.0
Percentage of AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax0.0100.0100.00.0100.0

us-gaap:PensionPlansDefinedBenefit


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value240.0224330
Percentage of AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax0.00.0440.00.03000.0

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent


Allowance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value221817151523222124242324242422211918171514141413131313131211119.8329.8341111101010109.71
Percentage of AllowanceForDoubtfulAccountsReceivableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AlternativeInvestmentMeasurementInput us-gaap:MeasurementInputType, us-gaap:StatementBusinessSegments, us-gaap:ValuationTechnique

us-gaap:AlternativeInvestmentMeasurementInput

us-gaap:MeasurementInputDiscountRate, wlk:Olefins, us-gaap:ValuationTechniqueDiscountedCashFlow


Alternative
Period End2020-12-312019-12-31
Value9.00.095
Percentage of AlternativeInvestmentMeasurementInput100.0100.0

us-gaap:AlternativeInvestmentMeasurementInput us-gaap:Range, us-gaap:MeasurementInputType, us-gaap:StatementBusinessSegments, us-gaap:ValuationTechnique

srt:Maximum, us-gaap:MeasurementInputDiscountRate, wlk:Vinyls, us-gaap:ValuationTechniqueDiscountedCashFlow


Alternative
Period End2020-12-312019-12-31
Value10.80.125
Percentage of AlternativeInvestmentMeasurementInput120.0131.6

srt:Minimum, us-gaap:MeasurementInputDiscountRate, wlk:Vinyls, us-gaap:ValuationTechniqueDiscountedCashFlow


Alternative
Period End2020-12-312019-12-31
Value7.80.09
Percentage of AlternativeInvestmentMeasurementInput86.794.7

us-gaap:AssetRetirementObligationCurrent

us-gaap:AssetRetirementObligationCurrent


Asset
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value127.08.03.04.0
Percentage of AssetRetirementObligationCurrent100.0100.0100.0100.0100.0

us-gaap:AssetRetirementObligationsNoncurrent

us-gaap:AssetRetirementObligationsNoncurrent


Asset
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value1720201817
Percentage of AssetRetirementObligationsNoncurrent100.0100.0100.0100.0100.0

us-gaap:BuildingsAndImprovementsGross

us-gaap:BuildingsAndImprovementsGross


Buildings
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value652608544495464266244173137135129
Percentage of BuildingsAndImprovementsGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BusinessCombinationContingentConsiderationLiability us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationContingentConsiderationLiability

wlk:BoralTargetCompanies


Business
Period End2021-06-20
Value65
Percentage of BusinessCombinationContingentConsiderationLiability100.0

us-gaap:ContractWithCustomerLiability us-gaap:CounterpartyName

us-gaap:ContractWithCustomerLiability

wlk:LACCLLC


Contract
Period End2020-12-312019-12-312018-12-31
Value10.05.00.0
Percentage of ContractWithCustomerLiability100.0100.00.0

wlk:LotteChemicalCorporation


Contract
Period End2020-12-312019-12-312018-12-31
Value127.00.0
Percentage of ContractWithCustomerLiability120.0140.00.0

us-gaap:DebtInstrumentCarryingAmount

us-gaap:DebtInstrumentCarryingAmount


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value36263620362037363801448535003479271527152715271527153165385333523492360236773677764764
Percentage of DebtInstrumentCarryingAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

wlk:EightPointSevenThreePercentSeniorNotesDueTwentyTwentyTwo, us-gaap:SeniorNotes


Debt
Period End2021-06-302021-03-31
Value3034
Percentage of DebtInstrumentCarryingAmount0.80.9

wlk:FivePercentSeniorNotesDueTwentyFortySix, us-gaap:SeniorNotes


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-08-102015-12-31
Value7007007007007007007007007007007007007007007007007007007007007000.0
Percentage of DebtInstrumentCarryingAmount19.319.319.318.718.415.620.020.125.825.825.825.825.822.118.220.920.019.419.019.00.00.0

wlk:FourPointThreeSevenFivePercentSeniorNotesDueTwentyFortySeven, us-gaap:SeniorNotes


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-11-302016-12-31
Value5005005005005005005005005005005005005005005005000.0
Percentage of DebtInstrumentCarryingAmount13.813.813.813.413.211.114.314.418.418.418.418.418.415.813.00.00.0

wlk:OnePointSixTwoFivePercentageSeniorNotesDueTwentyTwentyNineMemberDomain, us-gaap:SeniorNotes


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value8318218598217867707857640.0
Percentage of DebtInstrumentCarryingAmount22.922.723.722.020.717.222.422.00.0

wlk:ThreePointFiveZeroPercentSeniorNotesDueTwentyThirtyTwo, us-gaap:SeniorNotes


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value2502502502502502502502502502502502502502502500.0
Percentage of DebtInstrumentCarryingAmount6.96.96.96.76.65.67.17.29.29.29.29.29.27.96.50.0

wlk:ThreePointSixPercentSeniorNotesDueTwentyTwentySix, us-gaap:SeniorNotes


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-08-102015-12-31
Value7507507507507507507507507507507507507507507507507507507507507500.0
Percentage of DebtInstrumentCarryingAmount20.720.720.720.119.716.721.421.627.627.627.627.627.623.719.522.421.520.820.420.40.00.0

wlk:ThreePointThreeSevenFiveDueTwentyThirty, us-gaap:SeniorNotes


Debt
Period End2020-12-31
Value300
Percentage of DebtInstrumentCarryingAmount8.3

wlk:ThreePointThreeSevenFiveSeniorNotesDueTwentyThirty, us-gaap:SeniorNotes


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-06-122019-12-31
Value3003003003003003000.0
Percentage of DebtInstrumentCarryingAmount8.38.38.38.07.90.00.0

wlk:WasteDisposalRevenueBondsDueTwentyTwentySeven, us-gaap:SeniorNotes


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-06-302015-12-31
Value111111111111111111111111111111101010101010
Percentage of DebtInstrumentCarryingAmount0.30.30.30.30.30.20.30.30.40.40.40.40.40.30.30.30.30.30.31.41.4

us-gaap:DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet

us-gaap:DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value5152545556535555464647484938163.4872.9891.247-0.765-2.6966.4366.741
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet us-gaap:DebtInstrument, us-gaap:LongtermDebtType

wlk:FivePercentSeniorNotesDueTwentyFortySix, us-gaap:SeniorNotes


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value22222323232323242424242525252525252526260.0
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet43.142.342.641.841.143.441.843.652.252.251.152.151.065.8156.2730.2859.32075.1-3400.9-968.90.0

wlk:FourPointThreeSevenFivePercentSeniorNotesDueTwentyFortySeven, us-gaap:SeniorNotes


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value9.09.09.09.09.09.09.09.09.09.09.09.09.09.09.00.0
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet17.617.316.716.416.117.016.416.419.619.619.118.818.423.756.2-0.0

wlk:OnePointSixTwoFivePercentageSeniorNotesDueTwentyTwentyNineMemberDomain, us-gaap:SeniorNotes


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value9.010.010.010.010.010.01110.00.0
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet17.619.218.518.217.918.920.018.20.0

wlk:ThreePointFiveZeroPercentSeniorNotesDueTwentyThirtyTwo, us-gaap:SeniorNotes


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value1.01.01.01.01.01.01.01.02.02.02.02.02.02.02.00.0
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet2.01.91.91.81.81.91.81.84.34.34.34.24.15.312.5-0.0

wlk:ThreePointSixPercentSeniorNotesDueTwentyTwentySix, us-gaap:SeniorNotes


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value6.06.06.07.07.07.08.08.08.08.09.09.09.010.010.010101010100.0
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet11.811.511.112.712.513.214.514.517.417.419.118.818.426.362.5287.7345.0847.2-1406.1-405.00.0

wlk:ThreePointSixZeroPercentageSeniorNotesDueTwentyTwentyTwo, us-gaap:SeniorNotes


Debt
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value1.01.01.01.01.01.01.01.01.01.01.01.01.01.6351.721.8061.8911.9762.0612.232
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet1.91.81.81.91.81.82.22.22.12.12.02.66.246.957.5144.8-247.2-73.332.033.1

wlk:ThreePointThreeSevenFiveDueTwentyThirty, us-gaap:SeniorNotes


Debt
Period End2020-12-31
Value4.0
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet7.4

wlk:ThreePointThreeSevenFiveSeniorNotesDueTwentyThirty, us-gaap:SeniorNotes


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value4.04.04.04.04.00.0
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet7.87.77.47.37.10.0

us-gaap:DeferredCostsAndOtherAssets

us-gaap:DeferredCostsAndOtherAssets


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312011-12-31
Value256238223247266273268565566559504499460434412387367360327310282194173131137154165170105109971021111125886
Percentage of DeferredCostsAndOtherAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredIncomeTaxLiabilities


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value17721721134512951921625595
Percentage of DeferredIncomeTaxLiabilities100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsGross


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value45252424425333510110268595855
Percentage of DeferredTaxAssetsGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsInventory

us-gaap:DeferredTaxAssetsInventory


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value13201311138.66311157.8317.3216.893
Percentage of DeferredTaxAssetsInventory100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value105209506469171811111315
Percentage of DeferredTaxAssetsOperatingLossCarryforwards100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsOther


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value43261215367.7477.666.6664.7045.96.119
Percentage of DeferredTaxAssetsOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxCreditCarryforwards

us-gaap:DeferredTaxAssetsTaxCreditCarryforwards


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value25252426230.7460.6940.7080.7820.7691.729
Percentage of DeferredTaxAssetsTaxCreditCarryforwards100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value908376791134.393
Percentage of DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value6365645366626232322924
Percentage of DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesDeferredExpenseOtherCapitalizedCosts

us-gaap:DeferredTaxLiabilitiesDeferredExpenseOtherCapitalizedCosts


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value1721208.00.7011.4672.28926101113
Percentage of DeferredTaxLiabilitiesDeferredExpenseOtherCapitalizedCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates

us-gaap:DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates


Deferred
Period End2020-12-312019-12-312018-12-31
Value22722013
Percentage of DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DeferredTaxLiabilitiesOther


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value18182718170.00.00.4780.2280.9140.795
Percentage of DeferredTaxLiabilitiesOther100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesOtherFiniteLivedAssets

us-gaap:DeferredTaxLiabilitiesOtherFiniteLivedAssets


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value13715614815422015
Percentage of DeferredTaxLiabilitiesOtherFiniteLivedAssets100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value108010179489061374423398434340344328
Percentage of DeferredTaxLiabilitiesPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanAccumulatedBenefitObligation us-gaap:RetirementPlanFundingStatus, us-gaap:RetirementPlanSponsorLocation

us-gaap:DefinedBenefitPlanAccumulatedBenefitObligation

us-gaap:UnderfundedPlan, country:US


Defined
Period End2020-12-312019-12-312018-12-31
Value748703648
Percentage of DefinedBenefitPlanAccumulatedBenefitObligation100.0100.0100.0

us-gaap:UnderfundedPlan, us-gaap:ForeignPlan


Defined
Period End2020-12-312019-12-312018-12-31
Value163138125
Percentage of DefinedBenefitPlanAccumulatedBenefitObligation21.819.619.3

us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax

country:US, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-31
Value-6.01636
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax100.0100.0100.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-31
Value-30.0-18.0-9.0
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax500.0-112.5-25.0

us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax

country:US, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-31
Value-6.01636
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax100.0100.0100.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-31
Value-34.0-22.0-9.0
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax566.7-137.5-25.0

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate us-gaap:RetirementPlanSponsorLocation

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate

country:US


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value2.10.030.0410.034
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate100.0100.0100.0100.0

us-gaap:ForeignPlan


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value0.80.0130.020.018
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate38.143.348.852.9

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

country:US, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value1.50.0250.0370.03
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate71.483.390.288.2

us-gaap:ForeignPlan, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value2.70.0320.0390.040.04
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate128.6106.795.1117.60.0

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease us-gaap:RetirementPlanSponsorLocation

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease

us-gaap:ForeignPlan


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value2.60.0260.0260.026
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanBenefitObligation us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanBenefitObligation

country:US, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value63656773
Percentage of DefinedBenefitPlanBenefitObligation100.0100.0100.0100.0

country:US, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value748703648807
Percentage of DefinedBenefitPlanBenefitObligation1187.31081.5967.21105.5

us-gaap:ForeignPlan, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value4.04.03.03.03.00.0
Percentage of DefinedBenefitPlanBenefitObligation6.36.24.54.10.00.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value173144136142
Percentage of DefinedBenefitPlanBenefitObligation274.6221.5203.0194.5

us-gaap:DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear

us-gaap:DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear


Defined
Period End2020-12-312019-12-31
Value3000000.01000000.0
Percentage of DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear100.0100.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value18222530
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value234233233265
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter1300.01059.1932.0883.3

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value45454451
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value7.07.08.08.0
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value47464653
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive671.4657.1575.0662.5

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value7.08.08.08.0
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value46474652
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour657.1587.5575.0650.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value47454552
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value45454453
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear

country:US, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-31
Value1000000.0
Percentage of DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear100.0

us-gaap:DefinedBenefitPlanFundedStatusOfPlan us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanFundedStatusOfPlan

country:US, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-31
Value-63000000.0-65000000.0-67000000.0
Percentage of DefinedBenefitPlanFundedStatusOfPlan100.0100.0100.0

country:US, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-31
Value-185000000.0-177000000.0-162000000.0
Percentage of DefinedBenefitPlanFundedStatusOfPlan293.7272.3241.8

us-gaap:ForeignPlan, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value-4000000.0-4000000.0-3000000.0-3000000.0-3000000.0
Percentage of DefinedBenefitPlanFundedStatusOfPlan6.36.24.50.00.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-31
Value-152000000.0-125000000.0-119000000.0
Percentage of DefinedBenefitPlanFundedStatusOfPlan241.3192.3177.6

us-gaap:DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear

country:US, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value6.50.0680.070.073
Percentage of DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear100.0100.0100.0100.0

us-gaap:ForeignPlan, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value5.60.0570.0580.0620.062
Percentage of DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear86.283.882.984.90.0

us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation us-gaap:RetirementPlanFundingStatus, us-gaap:RetirementPlanSponsorLocation

us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation

us-gaap:UnderfundedPlan, country:US


Defined
Period End2020-12-312019-12-312018-12-31
Value748703648
Percentage of DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation100.0100.0100.0

us-gaap:UnderfundedPlan, us-gaap:ForeignPlan


Defined
Period End2020-12-312019-12-312018-12-31
Value164143128
Percentage of DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation21.920.319.8

us-gaap:DefinedBenefitPlanPlanAssetsTargetAllocationPercentage us-gaap:FinancialInstrument

us-gaap:DefinedBenefitPlanPlanAssetsTargetAllocationPercentage

us-gaap:EquitySecurities


Defined
Period End2020-12-312019-12-312018-12-31
Value60.00.60.6
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage100.0100.0100.0

us-gaap:FixedIncomeSecurities


Defined
Period End2020-12-312019-12-312018-12-31
Value40.00.40.4
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage66.766.766.7

us-gaap:DefinedBenefitPlanUltimateHealthCareCostTrendRate1 us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanUltimateHealthCareCostTrendRate1

country:US, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value4.50.0450.0450.046
Percentage of DefinedBenefitPlanUltimateHealthCareCostTrendRate1100.0100.0100.0100.0

us-gaap:ForeignPlan, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value4.00.040.0450.0450.045
Percentage of DefinedBenefitPlanUltimateHealthCareCostTrendRate188.988.9100.097.80.0

us-gaap:DueToAffiliateCurrentAndNoncurrent us-gaap:CounterpartyName, us-gaap:RelatedPartyTransaction, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:DueToAffiliateCurrentAndNoncurrent

wlk:YNCORISGmbHCo.KG, wlk:ElectricityAndTechnicalServices, srt:AffiliatedEntity


Due
Period End2020-12-312019-12-312018-12-31
Value413648
Percentage of DueToAffiliateCurrentAndNoncurrent100.0100.0100.0

us-gaap:DueToAffiliateCurrentAndNoncurrent us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:RelatedPartyTransaction, us-gaap:RelatedPartyTransactionsByRelatedParty

wlk:CypressInterstatePipelineLLC, wlk:PipelineFeesForTransportOfNaturalGasLiquidFeedstocks, us-gaap:CorporateJointVenture


Due
Period End2020-12-312019-12-312018-12-312017-12-31
Value1.01.02.01.0
Percentage of DueToAffiliateCurrentAndNoncurrent2.42.84.20.0

us-gaap:DueToRelatedPartiesCurrent

us-gaap:DueToRelatedPartiesCurrent


Due
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value4837613733234154
Percentage of DueToRelatedPartiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized us-gaap:AwardType

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized

us-gaap:EmployeeStockOption


Employee
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value7.06.05.04.03.7083.7553.5713.092
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PerformanceShares


Employee
Period End2020-12-312019-12-31
Value9.06.0
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized128.6100.0

us-gaap:RestrictedStockUnitsRSU


Employee
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value1815171716141514
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized257.1250.0340.0425.0434.5397.5446.1465.3

us-gaap:EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity

us-gaap:EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity


Equity
Period End2020-12-31
Value166
Percentage of EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity100.0

us-gaap:EquityMethodInvestmentOwnershipPercentage us-gaap:CounterpartyName, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:EquityMethodInvestmentOwnershipPercentage

wlk:CypressInterstatePipelineLLC, us-gaap:CorporateJointVenture


Equity
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value50.00.50.50.50.5
Percentage of EquityMethodInvestmentOwnershipPercentage100.0100.0100.0100.0100.0

wlk:RSCogenLLC, srt:AffiliatedEntity


Equity
Period End2020-12-312019-12-312018-12-31
Value50.00.50.5
Percentage of EquityMethodInvestmentOwnershipPercentage100.0100.0100.0

wlk:VinylSolutionsLLC, srt:AffiliatedEntity


Equity
Period End2020-12-312019-12-312018-12-31
Value50.00.50.5
Percentage of EquityMethodInvestmentOwnershipPercentage100.0100.0100.0

wlk:YNCORISGmbHCo.KG, srt:AffiliatedEntity


Equity
Period End2020-12-312019-12-31
Value20.00.2
Percentage of EquityMethodInvestmentOwnershipPercentage40.040.0

us-gaap:EquityMethodInvestments

us-gaap:EquityMethodInvestments


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-312016-12-312016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value1009102910591046105210651112253218.9299.4319.2089.593376461706867666548434344444646474746
Percentage of EquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EquityMethodInvestments us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

wlk:Otherequitymethodinvestments


Equity
Period End2020-12-312019-12-312018-12-31
Value987470
Percentage of EquityMethodInvestments9.36.727.7

us-gaap:FiniteLivedCustomerRelationshipsGross us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedCustomerRelationshipsGross

us-gaap:CustomerRelationships


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value845832745754662
Percentage of FiniteLivedCustomerRelationshipsGross100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization

us-gaap:CustomerRelationships


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value401309220138502217128.2596.9015.544
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LicensingAgreements


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value9479655544383543414039
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization23.425.629.539.987.3171.2205.7354.7501.4592.1717.2

us-gaap:OtherIntangibleAssets


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value26242215648.1486.8714.837
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization6.57.810.010.9127.136.139.539.7

us-gaap:Trademarks


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value503726176.8412.6020.7590.0
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization12.512.011.812.313.611.54.40.0

wlk:TotalOtherIntangibleAssets


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value1701401138764
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization42.445.351.463.0126.8

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths


Finite
Period End2020-12-31
Value120
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive


Finite
Period End2020-12-31
Value52
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearFive100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour


Finite
Period End2020-12-31
Value54
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearFour100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree


Finite
Period End2020-12-31
Value60
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearThree100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo


Finite
Period End2020-12-31
Value108
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo100.0

us-gaap:FiniteLivedIntangibleAssetsGross us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsGross

wlk:TotalOtherIntangibleAssets


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value338327247248240
Percentage of FiniteLivedIntangibleAssetsGross100.0100.0100.0100.0100.0

us-gaap:FiniteLivedLicenseAgreementsGross us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedLicenseAgreementsGross

us-gaap:LicensingAgreements


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value178172122124121
Percentage of FiniteLivedLicenseAgreementsGross100.0100.0100.0100.0100.0

us-gaap:FiniteLivedTrademarksGross us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedTrademarksGross

us-gaap:Trademarks


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value125120909388
Percentage of FiniteLivedTrademarksGross100.0100.0100.0100.0100.0

us-gaap:HeldToMaturitySecurities

us-gaap:HeldToMaturitySecurities


Held
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value0.00.00.050240249500.010.0355852056440.0
Percentage of HeldToMaturitySecurities0.00.00.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.00.0

us-gaap:IncomeTaxesReceivable

us-gaap:IncomeTaxesReceivable


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value284392297211233592951515755484.07.0165132901346981601911218.9195.3747.5125.248202029224.011133.3357.1691615
Percentage of IncomeTaxesReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InventoryFinishedGoodsNetOfReserves

us-gaap:InventoryFinishedGoodsNetOfReserves


Inventory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value514534524451469566568541558655657566552592549488473491500466253298253238280278300
Percentage of InventoryFinishedGoodsNetOfReserves100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InventorySuppliesNetOfReserves

us-gaap:InventorySuppliesNetOfReserves


Inventory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value171166167165164161158155155149154152144143130133132127837876767472716566
Percentage of InventorySuppliesNetOfReserves100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InventoryWorkInProcessAndRawMaterialsNetOfReserves

us-gaap:InventoryWorkInProcessAndRawMaterialsNetOfReserves


Inventory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value280255227213212207210210212217203221209209221213226202216199118103106118134135158
Percentage of InventoryWorkInProcessAndRawMaterialsNetOfReserves100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InvestmentsInAndAdvancesToAffiliatesAtFairValue us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:InvestmentsInAndAdvancesToAffiliatesAtFairValue

wlk:LACCLLC


Investments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value9469589619669819901038227183
Percentage of InvestmentsInAndAdvancesToAffiliatesAtFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths


Lessee
Period End2020-12-31
Value102
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths100.0

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

us-gaap:LineOfCreditFacilityRemainingBorrowingCapacity

us-gaap:RevolvingCreditFacility, wlk:NewCreditAgreement


Line
Period End2020-12-31
Value1000
Percentage of LineOfCreditFacilityRemainingBorrowingCapacity100.0

us-gaap:LongTermDebtFairValue us-gaap:DebtInstrument, us-gaap:FairValueByMeasurementBasis, us-gaap:LongtermDebtType

us-gaap:LongTermDebtFairValue

wlk:EightPointSevenThreePercentSeniorNotesDueTwentyTwentyTwo, us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:SeniorNotes


Long
Period End2021-06-302021-03-31
Value3034
Percentage of LongTermDebtFairValue100.0100.0

wlk:FivePercentSeniorNotesDueTwentyFortySix, us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:SeniorNotes


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value8818279058097456517617567216816416877087407877607417176917050.0
Percentage of LongTermDebtFairValue2936.72432.40.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

wlk:FourPointThreeSevenFivePercentSeniorNotesDueTwentyFortySeven, us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:SeniorNotes


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value5855445975335003955054934754434174464624845180.0
Percentage of LongTermDebtFairValue1950.01600.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

wlk:GoZoneSixPointFivePercentTaxExemptRevenueBondsDueTwentyThirtyFive, us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:SeniorNotes


Long
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value899092929494949596989799100101101100105106
Percentage of LongTermDebtFairValue0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

wlk:IkeZoneSixPointFivePercentTaxExemptRevenueBondsDueTwentyThirtyFive, us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:SeniorNotes


Long
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value656665686869696970717174737474737676
Percentage of LongTermDebtFairValue0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

wlk:OnePointSixTwoFivePercentageSeniorNotesDueTwentyTwentyNineMemberDomain, us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:SeniorNotes


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value8728558978097556887857850.0
Percentage of LongTermDebtFairValue2906.72514.70.00.00.00.00.00.00.0

wlk:ThreePointFiveZeroPercentSeniorNotesDueTwentyThirtyTwo, us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:SeniorNotes


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value2732752762612492392672662592492332412472462560.0
Percentage of LongTermDebtFairValue910.0808.80.00.00.00.00.00.00.00.00.00.00.00.00.00.0

wlk:ThreePointSixPercentSeniorNotesDueTwentyTwentySix, us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:SeniorNotes


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value8188098468267966877777757617266927047117277577497447357227520.0
Percentage of LongTermDebtFairValue2726.72379.40.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

wlk:ThreePointSixZeroPercentageSeniorNotesDueTwentyTwentyTwo, us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:SeniorNotes


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value256257259261258244255255255252248246247250255255255254251251244
Percentage of LongTermDebtFairValue853.3755.90.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

wlk:ThreePointThreeSevenFiveDueTwentyThirty, us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:SeniorNotes


Long
Period End2020-12-31
Value332
Percentage of LongTermDebtFairValue0.0

wlk:ThreePointThreeSevenFiveSeniorNotesDueTwentyThirty, us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:SeniorNotes


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value3243123323213060.0
Percentage of LongTermDebtFairValue1080.0917.60.00.00.00.0

wlk:WasteDisposalRevenueBondsDueTwentyTwentySeven, us-gaap:EstimateOfFairValueFairValueDisclosure, wlk:WasteDisposalRevenueBondsDueTwentyTwentySeven


Long
Period End2020-12-312019-12-312018-12-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value1111111110101010
Percentage of LongTermDebtFairValue0.00.00.00.00.00.00.00.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo


Long
Period End2020-12-31
Value250
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo100.0

us-gaap:LongtermDebtWeightedAverageInterestRate

us-gaap:LongtermDebtWeightedAverageInterestRate


Longterm
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value3.40.0360.0440.0450.0440.0550.0550.0550.0560.0650.065
Percentage of LongtermDebtWeightedAverageInterestRate100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LossContingencyAccrualAtCarryingValue

us-gaap:LossContingencyAccrualAtCarryingValue


Loss
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value53565348464647464953545753494947474848601.095
Percentage of LossContingencyAccrualAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NotesAndLoansPayableCurrent

us-gaap:NotesAndLoansPayableCurrent


Notes
Period End2021-06-302021-03-312020-12-31
Value37347.0
Percentage of NotesAndLoansPayableCurrent100.0100.0100.0

us-gaap:OperatingLossCarryforwards us-gaap:IncomeTaxAuthority

us-gaap:OperatingLossCarryforwards

us-gaap:ForeignCountry


Operating
Period End2020-12-312019-12-31
Value209217
Percentage of OperatingLossCarryforwards100.0100.0

us-gaap:StateAndLocalJurisdiction


Operating
Period End2020-12-312019-12-31
Value807613
Percentage of OperatingLossCarryforwards386.1282.5

us-gaap:OtherFiniteLivedIntangibleAssetsGross us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:OtherFiniteLivedIntangibleAssetsGross

us-gaap:OtherIntangibleAssets


Other
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value3535353131
Percentage of OtherFiniteLivedIntangibleAssetsGross100.0100.0100.0100.0100.0

us-gaap:OtherIntangibleAssetsNet

us-gaap:OtherIntangibleAssetsNet


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value154160168171174180187191204188134141149160161166169172175
Percentage of OtherIntangibleAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherReceivablesNetCurrent

us-gaap:OtherReceivablesNetCurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value453544393343392826322828272633292328382720162319261839
Percentage of OtherReceivablesNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit


Pension
Period End2020-12-312019-12-312018-12-31
Value4000000.02000000.03000000.0
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities100.0100.0100.0

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent

country:US, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Pension
Period End2020-12-312019-12-312018-12-31
Value636567
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent100.0100.0100.0

country:US, us-gaap:PensionPlansDefinedBenefit


Pension
Period End2020-12-312019-12-312018-12-31
Value185177162
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent293.7272.3241.8

us-gaap:ForeignPlan, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Pension
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value5.05.03.03.03.0
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent7.97.74.50.00.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit


Pension
Period End2020-12-312019-12-312018-12-31
Value152125119
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent241.3192.3177.6

us-gaap:PropertyPlantAndEquipmentOther

us-gaap:PropertyPlantAndEquipmentOther


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value557496437388377241213180161147133
Percentage of PropertyPlantAndEquipmentOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestrictedCashAndCashEquivalents

us-gaap:RestrictedCashAndCashEquivalents


Restricted
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value3537242321222222222222232323233131321861950.0
Percentage of RestrictedCashAndCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:RevenueRemainingPerformanceObligation us-gaap:CounterpartyName

us-gaap:RevenueRemainingPerformanceObligation

wlk:LACCLLC


Revenue
Period End2020-12-312019-12-312019-09-30
Value575961
Percentage of RevenueRemainingPerformanceObligation100.0100.0100.0

wlk:LotteChemicalCorporation


Revenue
Period End2020-12-312019-12-312019-09-30
Value788184
Percentage of RevenueRemainingPerformanceObligation136.8137.3137.7

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

us-gaap:PerformanceShares


Share
Period End2020-12-312019-12-312018-12-31
Value91.1114.380
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue100.0100.00.0

us-gaap:RestrictedStockUnitsRSU


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value75.2278.6965.7956.8655.6457.6155.75102.78
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue82.668.80.00.00.00.00.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice


Share
Period End2020-12-31
Value62.91
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue


Share
Period End2020-12-31
Value27
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue100.0

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1


Sharebased
Period End2020-12-31
Value19
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1100.0

us-gaap:TaxCreditCarryforwardAmount us-gaap:IncomeTaxAuthority

us-gaap:TaxCreditCarryforwardAmount

us-gaap:ForeignCountry


Tax
Period End2020-12-312019-12-31
Value3.04.0
Percentage of TaxCreditCarryforwardAmount100.0100.0

us-gaap:StateAndLocalJurisdiction


Tax
Period End2020-12-312019-12-31
Value2219
Percentage of TaxCreditCarryforwardAmount733.3475.0

us-gaap:UnamortizedDebtIssuanceExpense

us-gaap:UnamortizedDebtIssuanceExpense


Unamortized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value26272829312930302425252625262621232324215.967
Percentage of UnamortizedDebtIssuanceExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnFifthAnniversary

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnFifthAnniversary


Unrecorded
Period End2020-12-31
Value407
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnFifthAnniversary100.0

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary


Unrecorded
Period End2020-12-31
Value594
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary100.0

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnFourthAnniversary

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnFourthAnniversary


Unrecorded
Period End2020-12-31
Value462
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnFourthAnniversary100.0

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary


Unrecorded
Period End2020-12-31
Value623
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary100.0

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary


Unrecorded
Period End2020-12-31
Value553
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary100.0

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount


Unrecorded
Period End2020-12-31
Value4450
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount100.0

us-gaap:UnrecordedUnconditionalPurchaseObligationDueAfterFiveYears

us-gaap:UnrecordedUnconditionalPurchaseObligationDueAfterFiveYears


Unrecorded
Period End2020-12-31
Value1811
Percentage of UnrecordedUnconditionalPurchaseObligationDueAfterFiveYears100.0

wlk:AccruedRebatesCurrent

wlk:AccruedRebatesCurrent


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302014-12-312013-12-312012-12-312011-12-31
Value126841281148766115108936512511294108110844777733146393031262823
Percentage of AccruedRebatesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wlk:DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostNetExcludingCurrentMaturities

wlk:DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostNetExcludingCurrentMaturities


Debt
Period End2021-06-302021-03-312020-12-31
Value-51000000.0-52000000.0-54000000.0
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostNetExcludingCurrentMaturities100.0100.0100.0

wlk:DebtInstrumentUnamortizedDiscountpremiumandDebtIssuanceCostNetExcludingCurrentMaturities

wlk:DebtInstrumentUnamortizedDiscountpremiumandDebtIssuanceCostNetExcludingCurrentMaturities


Debt
Period End2020-12-312019-12-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value54554748494938-1.0
Percentage of DebtInstrumentUnamortizedDiscountpremiumandDebtIssuanceCostNetExcludingCurrentMaturities100.0100.0100.0100.0100.0100.0100.0100.0

wlk:DeferredTaxAssetsOperatingLeaseLiabilities

wlk:DeferredTaxAssetsOperatingLeaseLiabilities


Deferred
Period End2020-12-312019-12-312018-12-31
Value113960.0
Percentage of DeferredTaxAssetsOperatingLeaseLiabilities100.0100.00.0

wlk:DeferredTaxLiabilitiesOperatingLeaseRightofUseAssets

wlk:DeferredTaxLiabilitiesOperatingLeaseRightofUseAssets


Deferred
Period End2020-12-312019-12-312018-12-31
Value112950.0
Percentage of DeferredTaxLiabilitiesOperatingLeaseRightofUseAssets100.0100.00.0

wlk:DeferredTaxLiabilitiesParentsBasisInConsolidatedPartnerships

wlk:DeferredTaxLiabilitiesParentsBasisInConsolidatedPartnerships


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value1811942022093082001940.0
Percentage of DeferredTaxLiabilitiesParentsBasisInConsolidatedPartnerships100.0100.0100.0100.0100.0100.0100.00.0

wlk:DefinedBenefitPlanDefinedBenefitObligationUltimateHealthCareCostTrendRate us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

wlk:DefinedBenefitPlanDefinedBenefitObligationUltimateHealthCareCostTrendRate

country:US, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value4.50.0450.0450.045
Percentage of DefinedBenefitPlanDefinedBenefitObligationUltimateHealthCareCostTrendRate100.0100.0100.0100.0

us-gaap:ForeignPlan, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value4.00.040.040.0450.045
Percentage of DefinedBenefitPlanDefinedBenefitObligationUltimateHealthCareCostTrendRate88.988.988.9100.00.0

wlk:LongTermDebtGrossCurrentMaturities us-gaap:DebtInstrument, us-gaap:LongtermDebtType

wlk:LongTermDebtGrossCurrentMaturities

wlk:EightPointSevenThreePercentSeniorNotesDueTwentyTwentyTwo, us-gaap:SeniorNotes


Long
Period End2021-06-302021-03-31
Value2021
Percentage of LongTermDebtGrossCurrentMaturities100.0100.0

wlk:LongTermDebtGrossExcludingCurrentMaturities

wlk:LongTermDebtGrossExcludingCurrentMaturities


Long
Period End2021-06-302021-03-312020-12-31
Value360635993620
Percentage of LongTermDebtGrossExcludingCurrentMaturities100.0100.0100.0

wlk:LongtermDebtGrossExcludingCurrentMaturities

wlk:LongtermDebtGrossExcludingCurrentMaturities


Longterm
Period End2020-12-312019-12-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value36203500271527152715271531653678
Percentage of LongtermDebtGrossExcludingCurrentMaturities100.0100.0100.0100.0100.0100.0100.0100.0

wlk:PropertyPlantAndEquipmentNetExcludingConstructionInProgress

wlk:PropertyPlantAndEquipmentNetExcludingConstructionInProgress


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value63936361602260246030248824021822115811381140
Percentage of PropertyPlantAndEquipmentNetExcludingConstructionInProgress100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wlk:TreasuryStockPurchasePriceRepurchaseProgram

wlk:TreasuryStockPurchasePriceRepurchaseProgram


Treasury
Period End2020-12-31
Value419
Percentage of TreasuryStockPurchasePriceRepurchaseProgram100.0

Line plots across dimensions of each concept


Operating Margin
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
('us-gaap:OperatingSegments', None)
Operating  Marginus-gaap: Consolidation Items, us-gaap: Statement Business Segments
TTM Greenblatt ROC
_
(None,)
T T M  Greenblatt  R O C_
us-gaap:IncomeTaxExpenseBenefit
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
('us-gaap:OperatingSegments', None)
Income Tax Expense Benefitus-gaap: Consolidation Items, us-gaap: Statement Business Segments
us-gaap:NonoperatingIncomeExpense
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
('us-gaap:OperatingSegments', None)
Nonoperating Income Expenseus-gaap: Consolidation Items, us-gaap: Statement Business Segments
us-gaap:OperatingIncomeLoss
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
('us-gaap:OperatingSegments', None)
Operating Income Lossus-gaap: Consolidation Items, us-gaap: Statement Business Segments
us-gaap:OtherComprehensiveIncomeLossNetOfTax
us-gaap:StatementEquityComponents
(None,)
Other Comprehensive Income Loss Net Of Taxus-gaap: Statement Equity Components
us-gaap:Revenues
us-gaap:ConsolidationItems, us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
('us-gaap:OperatingSegments', None, 'wlk:Vinyls')
Revenuesus-gaap: Consolidation Items, us-gaap: Product Or Service, us-gaap: Statement Business Segments
us-gaap:Revenues
us-gaap:ConsolidationItems, us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
('us-gaap:OperatingSegments', None, 'wlk:Olefins')
Revenuesus-gaap: Consolidation Items, us-gaap: Product Or Service, us-gaap: Statement Business Segments
us-gaap:Assets
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
('us-gaap:OperatingSegments', None)
Assetsus-gaap: Consolidation Items, us-gaap: Statement Business Segments
us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents
(None,)
Stockholders Equityus-gaap: Statement Equity Components
us-gaap:PropertyPlantAndEquipmentNet
us-gaap:StatementGeographical
(None,)
Property Plant And Equipment Netus-gaap: Statement Geographical
us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures
us-gaap:CounterpartyName, us-gaap:RelatedPartyTransactionsByRelatedParty
(None, 'srt:AffiliatedEntity')
Investments In Affiliates Subsidiaries Associates And Joint Venturesus-gaap: Counterparty Name, us-gaap: Related Party Transactions By Related Party
us-gaap:Goodwill
us-gaap:StatementBusinessSegments
(None,)
Goodwillus-gaap: Statement Business Segments
us-gaap:FiniteLivedIntangibleAssetsNet
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
(None,)
Finite Lived Intangible Assets Netus-gaap: Finite Lived Intangible Assets By Major Class
us-gaap:LongTermDebt
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
(None, 'us-gaap:SeniorNotes')
Long Term Debtus-gaap: Debt Instrument, us-gaap: Longterm Debt Type
us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents
(None,)
Stockholders Equityus-gaap: Statement Equity Components
us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents
(None,)
Stockholders Equity Including Portion Attributable To Noncontrolling Interestus-gaap: Statement Equity Components
us-gaap:DepreciationDepletionAndAmortization
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
('us-gaap:OperatingSegments', None)
Depreciation Depletion And Amortizationus-gaap: Consolidation Items, us-gaap: Statement Business Segments
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
('us-gaap:OperatingSegments', None)
Payments To Acquire Property Plant And Equipmentus-gaap: Consolidation Items, us-gaap: Statement Business Segments