LYB


Line plots across dimensions of each concept
Tables

Table of contents



us-gaap:CommonStockValue

us-gaap:CommonStockSharesOutstanding
us-gaap:StatementEquityComponents
us-gaap:StatementOperatingActivitiesSegment
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding
us-gaap:StatementOperatingActivitiesSegment
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:EarningsPerShareBasic
us-gaap:StatementOperatingActivitiesSegment

us-gaap:EarningsPerShareDiluted
us-gaap:StatementOperatingActivitiesSegment

us-gaap:IncomeLossFromContinuingOperationsPerBasicShare

us-gaap:IncomeLossFromContinuingOperationsPerDilutedShare

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:CostOfRevenue
us-gaap:FinancialInstrument, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:GrossProfit

us-gaap:CostsAndExpenses

us-gaap:ResearchAndDevelopmentExpense

us-gaap:SellingGeneralAndAdministrativeExpense

us-gaap:OperatingIncomeLoss

us-gaap:InterestExpense
us-gaap:FinancialInstrument, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:OtherNonoperatingIncomeExpense
us-gaap:FinancialInstrument, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome

us-gaap:IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest

us-gaap:IncomeTaxExpenseBenefit
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ProfitLoss
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents
us-gaap:StatementOperatingActivitiesSegment

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementOperatingActivitiesSegment
us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic
us-gaap:StatementOperatingActivitiesSegment
us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted

us-gaap:Assets

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:StockholdersEquity

us-gaap:AssetsCurrent

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:ShortTermInvestments

us-gaap:AccountsReceivableNetCurrent

us-gaap:InventoryNet

us-gaap:InventoryLIFOReserve

us-gaap:PrepaidExpenseAndOtherAssetsCurrent
us-gaap:StatementGeographical
us-gaap:NoncurrentAssets

us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:PropertyPlantAndEquipmentNet
us-gaap:StatementBusinessSegments

us-gaap:Goodwill
us-gaap:StatementBusinessSegments

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:FiniteLivedIntangibleAssetsNet
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:OtherAssetsNoncurrent

us-gaap:LiabilitiesCurrent

us-gaap:OtherAccruedLiabilitiesCurrent

us-gaap:AccruedIncomeTaxesCurrent
us-gaap:FairValueByMeasurementFrequency, lyb:DerivativeAndNonderivativeInstrumentsClassification
us-gaap:LongTermDebt
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent

us-gaap:MinorityInterest

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:StockholdersEquity

us-gaap:CommonStockValue

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:TreasuryStockValue

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInOperatingActivities
us-gaap:DebtInstrument, us-gaap:SubsequentEventType

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities
us-gaap:DebtInstrument, us-gaap:SubsequentEventType

us-gaap:ProfitLoss
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents
us-gaap:StatementOperatingActivitiesSegment

us-gaap:IncreaseDecreaseInInventories

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:ProceedsFromIssuanceOfLongTermDebt
us-gaap:DebtInstrument
us-gaap:DebtInstrument, us-gaap:SubsequentEventType

us-gaap:RepaymentsOfLongTermDebt
us-gaap:DebtInstrument, us-gaap:SubsequentEventType

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:RepaymentsOfLongTermDebt
us-gaap:DebtInstrument, us-gaap:SubsequentEventType

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

us-gaap:ShareBasedCompensation

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxAssetsNet

us-gaap:UnrecognizedTaxBenefits

us-gaap:DeferredTaxAssetsValuationAllowance
us-gaap:StatementGeographical

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

lyb:DividendsOnSpecialStockOfSubsidiary
us-gaap:StatementEquityComponents
us-gaap:StatementOperatingActivitiesSegment

lyb:EarningsBeforeInterestTaxesDepreciationAndAmortizationOtherThanFromReportableSegments

lyb:EarningsBeforeInterestTaxesDepreciationAndAmortizationTotalReportableSegments

lyb:GainLossOnSaleOfBusinessAfterTax

lyb:IncomeLossFromEquityMethodInvestmentsIncludingImpairments
us-gaap:StatementBusinessSegments
us-gaap:StatementOperatingActivitiesSegment
lyb:IncrementalCommonSharesAttributableToLiabilityandEquityAwards
us-gaap:StatementEquityComponents
lyb:MinorityInterestDecreaseAndIncreaseInAdditionalPaidInCapitalFromRedemptions

lyb:NetAccruedInterestRelatedToDerivativeGainLossOnDerivativeNet

lyb:NetIncomeAvailabletoCompanyShareholders
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents
lyb:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForSettlementGainLossBeforeTax

lyb:PaymentsToAcquireEquitySecurities

lyb:ProceedsFromSaleOfEquitySecurities

lyb:SegmentMeasureOfProfitabilityEarningsBeforeInterestTaxesDepreciationAndAmortization
us-gaap:StatementBusinessSegments
us-gaap:StatementOperatingActivitiesSegment
lyb:UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasicAndDiluted
us-gaap:StatementEquityComponents
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

us-gaap:AmortizationOfFinancingCostsAndDiscounts
us-gaap:InvestmentType
us-gaap:AvailableForSaleSecuritiesGrossUnrealizedGains
us-gaap:InvestmentType
us-gaap:AvailableForSaleSecuritiesGrossUnrealizedLoss

us-gaap:BusinessCombinationIntegrationRelatedCosts
us-gaap:StatementBusinessSegments

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge1
us-gaap:DebtInstrument

us-gaap:CommonStockDividendsPerShareCashPaid

us-gaap:CommonStockDividendsPerShareDeclared

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossPeriodIncreaseDecrease

us-gaap:DeferredIncomeTaxesAndTaxCredits

us-gaap:DerivativeExcludedComponentGainLossRecognizedInEarnings

us-gaap:DividendsCommonStockCash
us-gaap:StatementEquityComponents

us-gaap:EffectOfExchangeRateOnCashAndCashEquivalents

us-gaap:EquityMethodInvestmentDividendsOrDistributions

us-gaap:EquitySecuritiesFvNiGainLoss

us-gaap:EquitySecuritiesFvNiRealizedGainLoss

us-gaap:EquitySecuritiesFvNiUnrealizedGainLoss

us-gaap:ForeignCurrencyTransactionGainLossBeforeTax

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

us-gaap:IncomeLossFromDiscontinuedOperationsNetOfTax

us-gaap:IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare

us-gaap:IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare

us-gaap:IncreaseDecreaseInAccountsPayable

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:InventoryWriteDown
us-gaap:StatementBusinessSegments

us-gaap:InvestmentIncomeInterest

us-gaap:OciBeforeReclassificationsNetOfTaxAttributableToParent
us-gaap:StatementEquityComponents
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsTax
us-gaap:StatementEquityComponents
us-gaap:Range
us-gaap:OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseBeforeAdjustmentsAndTax

us-gaap:OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax

us-gaap:OtherOperatingActivitiesCashFlowStatement

us-gaap:PaymentsForHedgeInvestingActivities
us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:FinancialInstrument

us-gaap:PaymentsForProceedsFromOtherInvestingActivities

us-gaap:PaymentsOfDebtIssuanceCosts

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:PaymentsToAcquireAdditionalInterestInSubsidiaries

us-gaap:PaymentsToAcquireAvailableForSaleSecurities
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:ProceedsFromDivestitureOfBusinessesAndInterestsInAffiliates

us-gaap:ProceedsFromHedgeInvestingActivities
us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:FinancialInstrument

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities

us-gaap:ProceedsFromRepaymentsOfCommercialPaper
us-gaap:DebtInstrument, us-gaap:SubsequentEventType
us-gaap:ShortTermDebtType

us-gaap:ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt

us-gaap:ProceedsFromShortTermDebt

us-gaap:ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent
us-gaap:StatementEquityComponents

us-gaap:ReclassificationFromAociCurrentPeriodTax
us-gaap:StatementEquityComponents
us-gaap:ShortTermDebtType
us-gaap:RepaymentsOfShortTermDebt

us-gaap:RevenueFromRelatedParties
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation

us-gaap:TreasuryStockAcquiredAverageCostPerShare
us-gaap:ShareRepurchaseProgram

us-gaap:TreasuryStockSharesAcquired
us-gaap:ShareRepurchaseProgram
us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents
us-gaap:TreasuryStockSharesRetired
us-gaap:StatementEquityComponents, us-gaap:SubsequentEventType

us-gaap:TreasuryStockValueAcquiredCostMethod
us-gaap:ShareRepurchaseProgram
us-gaap:StatementEquityComponents

lyb:ASchulmanIntegrationCostAfterTax

lyb:AccrualForRinsCurrent
us-gaap:DebtInstrument
lyb:AdditionalBorrowingCapacityUncommittedLoans

lyb:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedEquityMethodInvestments

lyb:CorporateIncomeTaxRate
us-gaap:IncomeTaxAuthorityName

lyb:DeferredTaxAssetsTaxAttributes
us-gaap:StatementGeographical
us-gaap:TaxPeriod

lyb:EquityMethodInvestmentSummarizedFinancialInformationNetAssets
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
lyb:EstimatedFutureEmployerContributionsInNextFiscalYearDefinedBenefitAndMultiEmployerPlans

lyb:InvestmentInManufacturingJointVentures
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:StatementBusinessSegments
us-gaap:DebtInstrument
lyb:LettersOfCreditMaximumAmount
us-gaap:FairValueByMeasurementFrequency, lyb:DerivativeAndNonderivativeInstrumentsClassification
lyb:LiabilitiesCarryingValueDisclosure
us-gaap:ShortTermDebtType
lyb:LineOfCreditOutstandingAmount
us-gaap:FairValueByMeasurementFrequency, lyb:DerivativeAndNonderivativeInstrumentsClassification
lyb:LoansReceivableFairValueDisclosureCurrent
us-gaap:DebtInstrument
lyb:LongTermDebtFairValuePercentage
us-gaap:DebtInstrument, us-gaap:SubsequentEventType

lyb:OtherInvestmentsAndLongTermReceivables

lyb:PrepaidRins

lyb:TaxAttributes
us-gaap:TaxPeriod

us-gaap:AccountsPayableRelatedPartiesCurrent

us-gaap:AccountsPayableTradeCurrent

us-gaap:AccrualForEnvironmentalLossContingencies

us-gaap:AccrualForTaxesOtherThanIncomeTaxesCurrent

us-gaap:AccruedLiabilitiesCurrent

us-gaap:AccruedMarketingCostsCurrent

us-gaap:AdditionalPaidInCapital

us-gaap:AdvancesOnInventoryPurchases

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent

us-gaap:AssetRetirementObligation
us-gaap:InvestmentType
us-gaap:AvailableForSaleSecurities
us-gaap:InvestmentType
us-gaap:AvailableForSaleSecuritiesAmortizedCost

us-gaap:CashEquivalentsAtCarryingValue

us-gaap:ContractWithCustomerLiability
us-gaap:DebtInstrument
us-gaap:DebtInstrumentUnamortizedDiscount
us-gaap:InvestmentType
us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredRevenueCurrent

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsNetNoncurrent

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits

us-gaap:DeferredTaxLiabilitiesDeferredExpenseCapitalizedInventoryCosts

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets

us-gaap:DeferredTaxLiabilitiesGrossNoncurrent

us-gaap:DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment

us-gaap:DeferredTaxLiabilitiesUndistributedForeignEarnings
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPensionPlanLiabilitiesCurrent
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPensionPlanLiabilitiesNoncurrent
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedBenefitObligation
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax
us-gaap:RetirementPlanType
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax
us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanBenefitObligation
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo
us-gaap: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:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsPlanAssets
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets

us-gaap:DerivativeAssetsCurrent

us-gaap:DerivativeAssetsNoncurrent

us-gaap:DerivativeLiabilitiesCurrent
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship
us-gaap:DerivativeNotionalAmount
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:SubsequentEventType
us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:FinancialInstrument
us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:FinancialInstrument, lyb:DerivativeAndNonderivativeInstrumentsClassification
us-gaap:FinancialInstrument

us-gaap:DueFromRelatedPartiesCurrent

us-gaap:EmployeeRelatedLiabilitiesCurrent
us-gaap:AwardType
us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:EquityMethodInvestmentOwnershipPercentage

us-gaap:EquityMethodInvestmentSummarizedFinancialInformationAssets

us-gaap:EquityMethodInvestmentSummarizedFinancialInformationCurrentAssets

us-gaap:EquityMethodInvestmentSummarizedFinancialInformationCurrentLiabilities

us-gaap:EquityMethodInvestmentSummarizedFinancialInformationNoncurrentAssets

us-gaap:EquityMethodInvestmentSummarizedFinancialInformationNoncurrentLiabilities

us-gaap:EquityMethodInvestments
us-gaap:StatementBusinessSegments
us-gaap:FinancialInstrument
us-gaap:FairValueNetAssetLiability

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsGross
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:IncomeTaxesReceivable

us-gaap:InterestPayableCurrent

us-gaap:InventoryFinishedGoodsNetOfReserves

us-gaap:InventoryRawMaterialsAndSuppliesNetOfReserves

us-gaap:InventoryWorkInProcessNetOfReserves
us-gaap:DebtInstrument
us-gaap:LettersOfCreditOutstandingAmount

us-gaap:LifeInsuranceCorporateOrBankOwnedAmount
us-gaap:DebtInstrument
us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity
us-gaap:ShortTermDebtType
us-gaap:DebtInstrument
us-gaap:LineOfCreditFacilityRemainingBorrowingCapacity
us-gaap:ShortTermDebtType

us-gaap:LongTermDebtAndCapitalLeaseObligations

us-gaap:LongTermDebtAndCapitalLeaseObligationsCurrent

us-gaap:LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities
us-gaap:DebtInstrument

us-gaap:MarketableSecuritiesCurrent
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:MultiemployerPlansMinimumContribution
us-gaap:FairValueByMeasurementFrequency, lyb:DerivativeAndNonderivativeInstrumentsClassification
us-gaap:NotesAndLoansReceivableGrossCurrent

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiabilityCurrent
us-gaap:BalanceSheetLocation

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:OtherAssetsMiscellaneousCurrent

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

us-gaap:PrepaidInsurance

us-gaap:RestrictedCashAndCashEquivalentsAtCarryingValue

us-gaap:RestrictedCashCurrent

us-gaap:SecuritiesForReverseRepurchaseAgreements
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

us-gaap:ShortTermBorrowings
us-gaap:FairValueByMeasurementFrequency, lyb:DerivativeAndNonderivativeInstrumentsClassification
us-gaap:ShortTermDebtType

us-gaap:ShortTermDebtWeightedAverageInterestRate
us-gaap:ShortTermDebtType
us-gaap:FairValueByMeasurementFrequency, lyb:DerivativeAndNonderivativeInstrumentsClassification
us-gaap:ShorttermDebtFairValue

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents

us-gaap:TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests

us-gaap:TemporaryEquitySharesOutstanding

us-gaap:TreasuryStockShares
us-gaap:StatementEquityComponents

us-gaap:UnamortizedDebtIssuanceExpense
us-gaap:DebtInstrument

us-gaap:UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued

us-gaap:ValueAddedTaxReceivableCurrent

Tables

  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
us-gaap:CommonStockValue ▁▁▃▃▃▃▃████████████████████████████1919222222222231313131313131313131313131313131313131313131313131313131NANA
us-gaap:CommonStockSharesOutstanding ▁▁▁▂▂▂▃▃▃▃▃▃▃▃▃▃▄▄▄▅▅▅▆▆▇▇▇███████333333333370370375387390393394394397402404409419428440452468475486504515533548557570575575575574574573NANANA
 us-gaap:CommonStockSharesOutstanding us-gaap:StatementEquityComponents us-gaap:CommonStock▁▁▁▂▂▂▃▃▃▃▃▃▃▃▃▃▄▄▄▅▅▅▆▆▇▇▇█████████333333333370370375387390393394394397402404409419428440452468475486504515533548557570575575575574574573573568NA
 us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding us-gaap:StatementOperatingActivitiesSegment us-gaap:SegmentContinuingOperations334NA337370372NA390392395NA395402403NA414425434NA463472481NA512527548NA567578578NA577577NANANANANA
 us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding us-gaap:StatementOperatingActivitiesSegment us-gaap:SegmentDiscontinuedOperations334NA337370372NA390392395NA395402403NA414425434NA463472481NA512527548NA567578578NA5770NANANANANA
 us-gaap:WeightedAverageNumberOfSharesOutstandingBasic us-gaap:StatementOperatingActivitiesSegment us-gaap:SegmentContinuingOperations334NA337370372NA389391394NA395401403NA413424433NA462472479NA509523544NA563574574NA573573NANANANANA
 us-gaap:WeightedAverageNumberOfSharesOutstandingBasic us-gaap:StatementOperatingActivitiesSegment us-gaap:SegmentDiscontinuedOperations334NA337370372NA389391394NA395401403NA413424433NA462472479NA509523544NA563574574NA5730NANANANANA
us-gaap:EarningsPerShareBasic ▂▄▅▅▄▄▅▇▆█▅▅▄▄▅▅▅▄▅▅▅▄▅▅▄▄▄▄▄▃▄▃▃▁▄▃▃0.421.832.852.72.191.812.864.233.124.82.672.821.981.872.32.572.381.782.562.822.421.592.462.251.732.131.511.621.561.11.471.341.04-0.381.561.411.16
 us-gaap:EarningsPerShareBasic us-gaap:StatementOperatingActivitiesSegment us-gaap:SegmentContinuingOperations0.42NA2.862.712.19NA2.864.233.124.7899999999999992.672.832.01.91000000000000012.312.572.381.82000000000000122.572.812.431.6299999999999992.472.241.732.10999999999999941.521.611.571.15999999999999971.481.34NANANANANA
us-gaap:EarningsPerShareDiluted ▂▄▅▅▄▄▅▇▆█▅▅▄▄▅▅▅▄▅▅▅▄▅▅▄▄▄▄▄▃▃▃▃▁▄▃▃0.421.832.852.72.191.792.854.223.114.792.672.811.981.872.32.562.371.782.542.822.411.542.452.231.722.111.51.611.551.091.461.331.04-0.381.511.381.15
 us-gaap:EarningsPerShareDiluted us-gaap:StatementOperatingActivitiesSegment us-gaap:SegmentContinuingOperations0.42NA2.862.712.19NA2.854.223.114.7899999999999992.672.822.01.91000000000000012.312.562.371.81999999999999942.552.812.421.622.462.221.722.091.511.61.561.131.471.33NANANANANA
us-gaap:IncomeLossFromContinuingOperationsPerBasicShare ▂▄▅▅▄▄▅▇▆█▅▅▄▄▄▅▄▄▅▅▅▃▅▄▃▄▃▃▃▃▃▃▂▁▃▃0.421.86999999999999922.862.712.191.84999999999999962.864.233.124.7899999999999992.672.832.01.91000000000000012.312.572.381.82000000000000122.572.812.431.6299999999999992.472.241.732.10999999999999941.521.611.571.15999999999999971.481.341.030.049999999999999821.591.49NA
us-gaap:IncomeLossFromContinuingOperationsPerDilutedShare ▂▄▅▅▄▄▅▇▆█▅▅▄▄▄▅▄▄▅▅▄▃▅▄▃▄▃▃▃▃▃▃▂▁▃▃0.421.85999999999999942.862.712.191.83999999999999992.854.223.114.7899999999999992.672.822.01.91000000000000012.312.562.371.81999999999999942.552.812.421.622.462.221.722.091.511.61.561.131.471.331.030.050000000000000711.541.46NA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax ▂▃▃▃▃▃▄▅▄▄▃▃▃▂▂▂▁▁▃▃▂▅▆▇▆▆▅▆▅▅▆▆▇▄▇█▇7303817985278828856588769926998595309135831284038430757571917132655668798119893180011008811784119241091810937108711110310669100601127311248118799865125161330612252
us-gaap:CostOfRevenue ▁▂▃▄▃▅█▇▆▄▁68687044726975427446772884998290801275286939NANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:GrossProfit NA11351453150613321148165619161755160715771802143913271462162615771279186920981806130119481862155815371462160715161265160316871202NANANANA
us-gaap:CostsAndExpenses ▃▃▃▄▄▄▅▄▄▄▃▃▃▂▂▂▁▂▂▃▂▅▆▆▆▆▆▆▅▆▆▆▇▆▇█▇719073817598787177618082883885808273779471846826722066996116592553836019668473006610921310360105049795987499459739940210138994597991093310542110231199611187
us-gaap:ResearchAndDevelopmentExpense ▂▂▁▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▂▂▃▃▅▃▃▄█▄▄▄▇▇█▃27302627282830292829272525262524242625252630313432443535365739373954535633
us-gaap:SellingGeneralAndAdministrativeExpense ▆▇▇▇▆█▇▅▃▄▃▂▂▄▁▂▁▂▁▃▂▁▂▂▁▃▃▂▂▄▄▂▃▃▄▄▂295307303302287326309261233237218200204253188199193201194228205194211215186229220208213249236201224231236236211
us-gaap:OperatingIncomeLoss ▁▃▅▅▄▃▆▇▆▆▆▇▅▄▅▆▆▄▇█▇▅▇▇▆▅▅▆▅▄▆▆▄▂▆▆▄3047981124117710177941317162614941341133215771210104812491403136010521650184515751077170616131340126412071364126795913281449946439149313101065
us-gaap:InterestExpense ▁▁▁▁▁▁▁▁▁▁▁▁▃▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▆▁█▂▃▂89888681928890919195949520785728382778579697292969287817071747141199549156176163
us-gaap:OtherNonoperatingIncomeExpense ▃▃▃▃▄▅▄▄▄▃█▄▄▃▄▃▇▂▃▃▄▄▃▃▃▂▃▃▃▃▃▃▃▄▄▅▁0-71110254917162461142930719-388-1010421183611-121-962-78-1141947-43
us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax ▄▇▅▆▆▆▆▅▆▆▆▇▆▅▆▆▇▆▆█▁▅▁▆▆▇█▇▄▇█▃█-19986-11418-10-29-8-954035238436-10024-3093-23-55160-511-139-554-581812720089-191125184-376204NANANANA
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest ▂▄▅▆▅▄▆▇▇▆▆▇▅▅▆▆▇▅▇█▇▅▇▇▆▆▆▆▆▅▆▅▅▁▆▆▅2187521105117510207961347163415341342143815931120105212811438146210591676186716071094169415981326120711931333126393012861074901-7114181239923
us-gaap:IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest ▁▃▅▅▄▄▅▇▆█▅▅▄▄▄▅▅▄▅▆▅▄▆▅▄▅▄▄▄▃▄▄▃▁▄▄▃14361296910068176971115165512311898105811348057709551092103079711891326116779612601173943117785492390664585176859427912851682
us-gaap:IncomeTaxExpenseBenefit ▅▅▅▆▆▅▆▄▆▁▇▇▇▆▇▇▇▆██▇▆▇▇▇▅▇▇▇▆▇▇▆▄█▇▆7514013616920399232-21303-55638045931528232634643226248754144029843442538330339410357258435306302-98506388263
us-gaap:ProfitLoss ▂▄▅▅▄▄▅▇▆█▅▅▄▄▅▅▅▄▆▆▆▄▆▆▅▆▅▅▅▄▅▄▄▁▅▄▄144612965100381769211131654123118941056113079776395310911030795118613291164791125711769441175851927900623844768599-218895803660
 us-gaap:ProfitLoss us-gaap:StatementEquityComponents us-gaap:Parent▂▄▅▅▄▄▅▇▆█▅▅▄▄▅▅▅▄▆▆▆▄▆▆▅▆▅▅▅▄▅▄▄▁144612965100381769211131654123118941057113179776395210911030795118513301166793125811789451174853929901632846770600-215NANANA
 us-gaap:ProfitLoss us-gaap:StatementEquityComponents us-gaap:RetainedEarnings▂▄▅▅▄▄▅▇▆█▅▅▄▄▅▅▅▄▆▆▆▄▆▆▅▆▅▅▅▄▅▄▄▁144612965100381769211131654123118941057113179776395210911030795118513301166793125811789451174853929901632846770600-215NANANA
 us-gaap:ProfitLoss us-gaap:StatementOperatingActivitiesSegment us-gaap:SegmentContinuingOperations▁▃▄▄▄▃▅▇▅█▅▅▄▄▄▅▅▄▅▆▅▄▅▅▄▅▄▄▄▃▄▃143612969100681769711151655123118981058113480577095510921030797118913261167796126011739431177854923906645851768NANANANANA
us-gaap:ComprehensiveIncomeNetOfTax ▂▄▅▅▅▅▆▇▆█▆▆▅▅▅▆▆▅▆▇▅▄▅▆▅▇▆▆▅▄▆▄▅▁▄▅▆-387509742958760636116215971285196810731194870744932101610717381111158962627770511239471569105910237136221034399809-7213889301042
us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest ▂▄▅▅▅▅▆▇▆█▆▆▅▅▅▆▆▅▆▇▅▄▅▆▅▇▆▆▅▄▆▄▅▁▄▅▆-385511744959762638116215971285196810721193870744933101610717381112158862427570411219461570105710217126131032397808-7243889291039
 us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic us-gaap:StatementOperatingActivitiesSegment us-gaap:SegmentContinuingOperations▁▃▄▄▄▃▅▇▅█▅▅▄▄▄▅▅▄▅▆▅▄▅▅▄▅▄▄▄▃▄▃141609965100381469311131654123018961058113480476995310911029796118713251165796125711719421173854922904661849767NANANANANA
 us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic us-gaap:StatementOperatingActivitiesSegment us-gaap:SegmentDiscontinuedOperations▇▇▆▆▇▆▆▇▇▆▆▆▅▅▆▇▇▆▆█▆▆▆█▇▆▆█▅▁▅▇10-4-30-5-2-10-4-2-4-8-7-2-10-2-33-3-5-331-2-34-6-22-70NANANANANA
 us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted us-gaap:StatementOperatingActivitiesSegment us-gaap:SegmentContinuingOperations▁▃▄▄▄▃▅▇▅█▅▅▄▄▄▅▅▄▅▆▅▄▅▅▄▅▄▄▄▃▄▃141609965100381468811131654123018961058113480476995310911029796118713251165796125711719421173854922904661849767NANANANANA
 us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted us-gaap:StatementOperatingActivitiesSegment us-gaap:SegmentDiscontinuedOperations▇▇▆▆▇▆▆▇▇▆▆▆▅▅▆▇▇▆▆█▆▆▆█▇▆▆█▅▁▅▇10-4-30-5-2-10-4-2-4-8-7-2-10-2-33-3-5-331-2-34-6-22-70NANANANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
us-gaap:Assets █▇▇█▇▆▆▅▄▄▃▂▂▂▂▂▂▁▂▃▂▂▃▄▅▅▄▃▃▂▃▂▂▁▆3110030435301143117129889282782869627023268962620625243241182376823442234192343523572227572393524605240062428325631266562782727298268112504824677242202510423545236092283928267NANA
us-gaap:LiabilitiesAndStockholdersEquity █▇▇█▇▆▆▅▄▄▃▂▂▂▂▂▂▁▂▃▂▂▃▄▅▅▄▃▃▂▃▂▂▁▆3110030435301143117129889282782869627023268962620625243241182376823442234192343523572227572393524605240062428325631266562782727298268112504824677242202510423545236092283928267NANA
us-gaap:StockholdersEquity ▂▃▃▅▅▅▅▅▄▄▂▂▁▁▁▁▁▁▂▃▂▃▄▅▆▇▆▆▆▅▆▆▆▅█7324804478881072110138102571104410602972889497326686664626048608262836344655073287927747883149843107531179112478118741203211641111391231211492113101059314025NANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
us-gaap:AssetsCurrent ▁▁▁▃▂▂▃▄▃▃▃▂▁▁▁▁▂▁▃▃▃▃▄▅▆▆▆▄▄▄▅▄▄▃█96929510963011088102861056611383123491206811738110621007596819599955399831032497891119811990116471164512932137051499314599146251303212655122861339512366120981143516718NANA
us-gaap:CashAndCashEquivalentsAtCarryingValue ▃▂▁▂▁▁▁▄▃▃▂▂▁▂▂▂▂▂▃▂▃▂▂▃▄▆▆▅▄▄▅▃▃▂█▇▆159685847612793393325212384184015231204734485875740106013189241474132516161031118520302702445044143233287927323527195016701065560946874383
us-gaap:ShortTermInvestments ▂▂▁▁▂▄▄▄▅▆▆▅▅▅▅▅▆▅▇█▆▇▆▆▆▁1991965352423892944933104213071295127811761147109010231332106416021989147815931544129914020NANANANANANANANANANANA
us-gaap:AccountsReceivableNetCurrent ▃▄▅▆▆▅█▇▆▅▄▃▄▃▂▂▂▁▃▅▃▅███▇▇▇▇▇▇▇█▆▇28852981333135763508335538833699364233593097290431172716270226332508236327243179290332263898399338933828376637873685372038143667397335823786NANA
us-gaap:InventoryNet ▂▄▃▄▃▄▄▂▃▂▂▂▁▁▂▂▂▂▂▂▃▄▇▆▇▆▇▆▆▆▆█▆▇█39734588444646854496451545964096425742174177400738753809401540093978405141384179426745175359532655895279538251975270507552345759520854995682NANA
us-gaap:InventoryLIFOReserve NA670NANANA798NANANA1194NANANA499NANANA73NANANA270NANANA688NANANA620NANANA467NANANA
us-gaap:PrepaidExpenseAndOtherAssetsCurrent ▄▃▆██▇▇▆▆▆▆▅▄▄▄▆▅▇▆▆▇▆▃▃▆▄▃▁▂▁▁▃▅▅8447361150128513291255122410451070114711049648529238521081100912261059112111951054739784115683078457762257053275510021040NANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
 us-gaap:NoncurrentAssets us-gaap:StatementGeographical country:DENA1476NANANA1527NANANA1417NANANANANANANANANANANANANANANANANANANA1747NANANA1754NANANA
 us-gaap:NoncurrentAssets us-gaap:StatementGeographical country:FRNA540NANANA565NANANA551NANANANANANANANANANANANANANANANANANANA557NANANA558NANANA
 us-gaap:NoncurrentAssets us-gaap:StatementGeographical country:ITNA326NANANA343NANANA329NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NoncurrentAssets us-gaap:StatementGeographical country:MXNA249NANANA254NANANA198NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NoncurrentAssets us-gaap:StatementGeographical country:NLNA814NANANA757NANANA779NANANANANANANANANANANANANANANANANANANA730NANANA749NANANA
 us-gaap:NoncurrentAssets us-gaap:StatementGeographical country:USNA11999NANANA10346NANANA8761NANANANANANANANANANANANANANANANANANANA5365NANANA5060NANANA
 us-gaap:NoncurrentAssets us-gaap:StatementGeographical lyb:NonReportableGeographicalComponentsNA1701NANANA1730NANANA1585NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NoncurrentAssets us-gaap:StatementGeographical srt:ReportableGeographicalComponentsNA17105NANANA15522NANANA13620NANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:PropertyPlantAndEquipmentGross ██▇▇▇▆▆▆▆▅▅▅▅▄▄▄▄▃▃▃▃▃▃▃▃▂▂▂▂▂▁▁▁▁21664212602052819989192441870118116171641705716570160391554815118146351456314047135581291012602122361176912050117841183511453111511076410268986696269110872687578444NANANA
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment ███▇▇▇▇▆▆▆▆▅▅▅▅▅▄▄▄▄▄▃▃▃▃▃▃▂▂▂▂▁▁▁7277713068596704644762246094585458085573530249974757449845064366418539193809360033393292318430952897269425412289208719301698148913311111NANANA
us-gaap:PropertyPlantAndEquipmentNet ██▇▇▆▆▆▅▅▅▄▄▄▄▄▃▃▃▃▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁14387141301366913285127971247712022113101124910997107371055110361101371005796819373899187938636843087588600874085568457822379797779769674127237742673337363NANA
us-gaap:Goodwill ███████▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁1800189118481848180318141819562578570570559531528543542548536543543533566576602605605598588582591585576595585598NANA
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us-gaap:IncreaseDecreaseInInventories ▄▅▃▅▄▄▅▄▄▄▅▄▄▄▄▄▄▅▅▃▄▄▅▃▆▃▅▄▅▃▁█▂▃▅▃█-121117-1611703-61211-6455181245144-1003-11-15228153-1454-69221-252305-131131-91242-187-633725-346-132245-180799
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us-gaap:NetCashProvidedByUsedInFinancingActivities █▆▄▇▆▆▆▆▆▆▆▆▆▆▅▆▆▅▅▆▆▅▅▄▆▅▇▆▇▅▇▇▇▁▇▆▇884-453-190039-521-766-977-745-520-668-832-887-472-782-1195-1039-333-1744-1684-1021-401-1519-1621-2217-550-1266437-526-234-1808-23950-148-4538-118-32728
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Common Stock Value

us-gaap:CommonStockValue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value191922222222223131313131313131313131313131313131313131313131313131313130
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.1

Common Stock Par Or Stated Value Per Share

Shares Issued

Common Stock Shares Issued

Common Stock Shares Outstanding

us-gaap:CommonStockSharesOutstanding



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value333333333370370375387390393394394397402404409419428440452468475486504515533548557570575575575574574573
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:CommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value333333333370370375387390393394394397402404409419428440452468475486504515533548557570575575575574574573573568565
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

Common Stock Shares Authorized

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:StatementOperatingActivitiesSegment

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:SegmentContinuingOperations



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-30
Value334337370372390392395395402403414425434463472481512527548567578578577577
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:SegmentDiscontinuedOperations



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-30
Value3343373703723903923953954024034144254344634724815125275485675785785770
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:StatementOperatingActivitiesSegment

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:SegmentContinuingOperations



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-30
Value334337370372389391394395401403413424433462472479509523544563574574573573
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:SegmentDiscontinuedOperations



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-30
Value3343373703723893913943954014034134244334624724795095235445635745745730
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value0.421.832.852.72.191.812.864.233.124.82.672.821.981.872.32.572.381.782.562.822.421.592.462.251.732.131.511.621.561.11.471.341.04-0.381.561.411.16
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementOperatingActivitiesSegment

us-gaap:SegmentContinuingOperations



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value0.422.862.712.192.864.233.124.7899999999999992.672.832.01.91000000000000012.312.572.381.82000000000000122.572.812.431.6299999999999992.472.241.732.10999999999999941.521.611.571.15999999999999971.481.34
Percentage of EarningsPerShareBasic100.0100.4100.4100.0100.0100.0100.099.8100.0100.4101.0102.1100.4100.0100.0102.2100.499.6100.4102.5100.499.6100.099.1100.799.4100.6105.5100.7100.0

us-gaap:SegmentDiscontinuedOperations



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value0.0-0.01-0.010.00.00.00.0-0.0200000000000000040.0-0.01-0.02-0.01-0.010.00.00.0-0.010.01-0.01-0.01-0.010.010.00.0-0.010.01-0.01-0.04-0.010.0
Percentage of EarningsPerShareBasic0.0-0.4-0.40.00.00.00.0-0.40.0-0.4-1.0-0.5-0.40.00.00.0-0.40.4-0.4-0.6-0.40.40.00.0-0.70.6-0.6-3.6-0.70.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value0.421.832.852.72.191.792.854.223.114.792.672.811.981.872.32.562.371.782.542.822.411.542.452.231.722.111.51.611.551.091.461.331.04-0.381.511.381.15
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementOperatingActivitiesSegment

us-gaap:SegmentContinuingOperations



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value0.422.862.712.192.854.223.114.7899999999999992.672.822.01.91000000000000012.312.562.371.81999999999999942.552.812.421.622.462.221.722.091.511.61.561.131.471.33
Percentage of EarningsPerShareDiluted100.0100.4100.4100.0100.0100.0100.0100.0100.0100.4101.0102.1100.4100.0100.0102.2100.499.6100.4105.2100.499.6100.099.1100.799.4100.6103.7100.7100.0

us-gaap:SegmentDiscontinuedOperations



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value0.0-0.01-0.010.00.00.00.0-0.0200000000000000040.0-0.01-0.02-0.01-0.010.00.00.0-0.010.01-0.01-0.01-0.010.010.00.0-0.010.01-0.01-0.04-0.010.0
Percentage of EarningsPerShareDiluted0.0-0.4-0.40.00.00.00.0-0.40.0-0.4-1.0-0.5-0.40.00.00.0-0.40.4-0.4-0.6-0.40.40.00.0-0.70.6-0.6-3.7-0.70.0

Income Loss From Continuing Operations Per Basic Share

us-gaap:IncomeLossFromContinuingOperationsPerBasicShare



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value0.421.86999999999999922.862.712.191.84999999999999962.864.233.124.7899999999999992.672.832.01.91000000000000012.312.572.381.82000000000000122.572.812.431.6299999999999992.472.241.732.10999999999999941.521.611.571.15999999999999971.481.341.030.049999999999999821.591.49
Percentage of IncomeLossFromContinuingOperationsPerBasicShare100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Income Loss From Continuing Operations Per Diluted Share

us-gaap:IncomeLossFromContinuingOperationsPerDilutedShare



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value0.421.85999999999999942.862.712.191.83999999999999992.854.223.114.7899999999999992.672.822.01.91000000000000012.312.562.371.81999999999999942.552.812.421.622.462.221.722.091.511.61.561.131.471.331.030.050000000000000711.541.46
Percentage of IncomeLossFromContinuingOperationsPerDilutedShare100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Revenues

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value7303817985278828856588769926998595309135831284038430757571917132655668798119893180011008811784119241091810937108711110310669100601127311248118799865125161330612252
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Sales Revenue Net

Sales Revenue Goods Net

Cost Of Revenue

us-gaap:CostOfRevenue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value68687044726975427446772884998290801275286939
Percentage of CostOfRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax94.086.185.285.486.987.185.683.084.182.483.5

us-gaap:FinancialInstrument, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:CommodityContract, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AociDerivativeQualifyingAsHedgeExcludedComponentParent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value0804-1004
Percentage of CostOfRevenue0.00.10.00.1-0.10.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.10.00.0-0.10.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CommodityContract us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AociDerivativeQualifyingAsHedgeExcludedComponentParent0.00.00.00.00.00.00.0

Cost Of Goods Sold

Gross Profit

us-gaap:GrossProfit



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value11351453150613321148165619161755160715771802143913271462162615771279186920981806130119481862155815371462160715161265160316871202
Percentage of GrossProfit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax13.917.017.115.612.916.719.218.417.619.021.417.117.520.322.824.118.623.023.522.612.916.515.614.314.113.414.514.212.614.215.010.1

Costs And Expenses

us-gaap:CostsAndExpenses



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value719073817598787177618082883885808273779471846826722066996116592553836019668473006610921310360105049795987499459739940210138994597991093310542110231199611187
Percentage of CostsAndExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax98.590.289.189.290.691.189.085.986.885.386.481.285.688.485.183.182.187.582.381.782.691.387.988.189.790.391.587.788.1100.888.287.192.0106.988.190.291.3

Research And Development Expense

us-gaap:ResearchAndDevelopmentExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value27302627282830292829272525262524242625252630313432443535365739373954535633
Percentage of ResearchAndDevelopmentExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.40.40.30.30.30.30.30.30.30.30.30.30.30.30.30.30.40.40.30.30.30.30.30.30.30.40.30.30.30.60.30.30.30.50.40.40.3

Selling General And Administrative Expense

us-gaap:SellingGeneralAndAdministrativeExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value295307303302287326309261233237218200204253188199193201194228205194211215186229220208213249236201224231236236211
Percentage of SellingGeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.03.83.63.43.43.73.12.62.42.62.62.42.43.32.62.82.92.92.42.62.61.91.81.81.72.12.01.92.02.52.11.81.92.31.91.81.7

Operating Income Loss

us-gaap:OperatingIncomeLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value3047981124117710177941317162614941341133215771210104812491403136010521650184515751077170616131340126412071364126795913281449946439149313101065
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.29.813.213.311.98.913.316.315.714.716.018.814.413.817.419.720.715.320.320.719.710.714.513.512.311.611.112.311.99.511.812.98.04.511.99.88.7

Interest Expense

us-gaap:InterestExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value89888681928890919195949520785728382778579697292969287817071747141199549156176163
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.21.11.00.91.11.00.90.91.01.01.11.12.51.11.01.21.31.11.00.90.90.70.80.80.80.80.70.60.70.70.63.70.85.61.21.31.3

us-gaap:FinancialInstrument, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:InterestRateContract, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AociDerivativeQualifyingAsHedgeExcludedComponentParent



Period End2020-03-312019-09-302019-06-302019-03-31
Value0-10-4
Percentage of InterestExpense0.0-1.20.0-4.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-0.00.0-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:InterestRateContract us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AociDerivativeQualifyingAsHedgeExcludedComponentParent0.00.00.00.0

Other Nonoperating Income Expense

us-gaap:OtherNonoperatingIncomeExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value0-71110254917162461142930719-388-1010421183611-121-962-78-1141947-43
Percentage of OtherNonoperatingIncomeExpense0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-0.10.10.10.30.60.20.20.30.11.40.30.40.10.3-0.01.3-0.10.10.00.30.20.00.10.1-0.10.0-0.10.10.0-0.10.1-0.00.10.20.4-0.4

us-gaap:FinancialInstrument, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ForeignExchangeContract, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AociDerivativeQualifyingAsHedgeExcludedComponentParent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-53-8626-39-13-12462
Percentage of OtherNonoperatingIncomeExpense0.0-781.8260.0-156.0-76.5-775.0258.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.7-1.00.3-0.5-0.1-1.20.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ForeignExchangeContract us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AociDerivativeQualifyingAsHedgeExcludedComponentParent0.00.00.00.00.00.00.0

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

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value-19986-11418-10-29-8-954035238436-10024-3093-23-55160-511-139-554-581812720089-191125184-376204
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-2.71.1-1.30.2-0.1-0.3-0.1-1.00.40.40.31.00.4-1.30.3-0.41.4-0.3-0.71.8-6.4-1.4-4.7-0.50.21.21.80.8-1.81.21.6-3.31.7

Income Loss From Continuing Operations

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

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value2187521105117510207961347163415341342143815931120105212811438146210591676186716071094169415981326120711931333126393012861074901-7114181239923
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.09.213.013.311.99.013.616.416.114.717.319.013.313.917.820.222.315.420.620.920.110.814.413.412.111.011.012.011.89.211.49.57.6-0.711.39.37.5

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value-3969-8331-38-19-14-11574478414235-4621-3698-471275-214-91234
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest-17.99.2-7.52.6-3.7-2.4-1.0-7.04.83.55.88.93.1-4.41.6-2.56.7-4.40.74.0-13.3-8.30.10.20.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.50.8-1.00.4-0.4-0.2-0.1-1.20.80.51.01.70.4-0.60.3-0.51.5-0.70.10.8-2.7-0.90.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest

us-gaap:IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value14361296910068176971115165512311898105811348057709551092103079711891326116779612601173943117785492390664585176859427912851682
Percentage of IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.07.511.411.49.57.911.216.612.920.812.713.59.510.213.315.315.711.614.614.814.67.910.79.88.610.87.98.38.56.47.56.85.00.37.36.45.6

Income Loss From Continuing Operations Before Income Taxes Domestic

Income Loss From Continuing Operations Before Income Taxes Foreign

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value7514013616920399232-21303-55638045931528232634643226248754144029843442538330339410357258435306302-98506388263
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.01.71.61.92.41.12.3-0.23.2-6.14.65.53.73.74.54.96.63.86.06.15.53.03.73.63.50.33.13.73.32.63.92.72.5-1.04.02.92.1

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value-1116-249-80-2-281612214310-824230222-2101
Percentage of IncomeTaxExpenseBenefit-14.711.4-17.65.3-3.90.0-0.9133.35.3-2.25.59.43.2-29.11.20.60.70.00.40.40.5-0.70.20.00.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.20.2-0.30.1-0.10.0-0.0-0.30.20.10.30.50.1-1.10.10.00.00.00.00.00.0-0.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312014-09-302014-06-302014-03-312013-09-302013-06-30
Value411227321533310123
Percentage of IncomeTaxExpenseBenefit5.30.70.71.21.07.11.3-9.50.3-0.90.80.71.00.20.00.30.60.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.00.00.00.00.10.00.00.00.10.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AociDerivativeQualifyingAsHedgeExcludedComponentParent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-1515-257-10-7-5-3015
Percentage of IncomeTaxExpenseBenefit-20.010.7-18.44.1-4.9-7.1-2.2142.95.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.20.2-0.30.1-0.1-0.1-0.1-0.30.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AociDerivativeQualifyingAsHedgeExcludedComponentParent0.00.00.00.00.00.00.00.00.0

Income Taxes Paid Net

Profit Loss

us-gaap:ProfitLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value144612965100381769211131654123118941056113079776395310911030795118613291164791125711769441175851927900623844768599-218895803660
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.07.511.311.49.57.811.216.612.920.712.713.49.510.113.315.315.711.614.614.914.57.810.79.98.610.77.88.38.46.27.56.85.0-2.27.26.05.4

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-28-5922-30-12-8758
Percentage of ProfitLoss-19.4-6.12.2-3.7-1.1-5.34.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.4-0.70.2-0.4-0.1-0.90.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value10555677
Percentage of ProfitLoss6.90.50.50.60.50.40.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.10.10.10.10.10.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AociDerivativeQualifyingAsHedgeExcludedComponentParent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-38-6417-35-18-9451
Percentage of ProfitLoss-26.4-6.61.7-4.3-1.6-5.74.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.5-0.80.2-0.4-0.2-0.90.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AociDerivativeQualifyingAsHedgeExcludedComponentParent0.00.00.00.00.00.00.0

us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value0000000000-1-10010001-1-2-2-1-2-11-2-2-1-9-2-2-1-3
Percentage of ProfitLoss0.00.00.00.00.00.00.00.00.00.0-0.1-0.10.00.00.10.00.00.00.1-0.1-0.2-0.3-0.1-0.2-0.10.1-0.2-0.2-0.1-1.4-0.2-0.3-0.21.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.00.00.00.00.00.0-0.0-0.00.00.00.00.00.00.00.0-0.0-0.0-0.0-0.0-0.0-0.00.0-0.0-0.0-0.0-0.1-0.0-0.0-0.0-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Parent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value144612965100381769211131654123118941057113179776395210911030795118513301166793125811789451174853929901632846770600-215
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.1100.1100.0100.099.9100.0100.0100.099.9100.1100.2100.3100.1100.2100.199.9100.2100.2100.1101.4100.2100.3100.298.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.07.511.311.49.57.811.216.612.920.712.713.59.510.113.215.315.711.614.614.914.67.910.79.98.710.77.88.48.46.37.56.85.1-2.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Parent0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value144612965100381769211131654123118941057113179776395210911030795118513301166793125811789451174853929901632846770600-215
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.1100.1100.0100.099.9100.0100.0100.099.9100.1100.2100.3100.1100.2100.199.9100.2100.2100.1101.4100.2100.3100.298.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.07.511.311.49.57.811.216.612.920.712.713.59.510.113.215.315.711.614.614.914.67.910.79.98.710.77.88.48.46.37.56.85.1-2.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:StatementOperatingActivitiesSegment

us-gaap:SegmentContinuingOperations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value143612969100681769711151655123118981058113480577095510921030797118913261167796126011739431177854923906645851768
Percentage of ProfitLoss99.3100.0100.4100.3100.0100.7100.2100.1100.0100.2100.2100.4101.0100.9100.2100.1100.0100.3100.399.8100.3100.6100.299.799.9100.2100.499.6100.7103.5100.8100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.07.511.411.49.57.911.216.612.920.812.713.59.510.213.315.315.711.614.614.814.67.910.79.88.610.87.98.38.56.47.56.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:SegmentContinuingOperations0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:SegmentDiscontinuedOperations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value10-4-30-5-2-10-4-2-4-8-7-2-10-2-33-3-5-331-2-34-6-22-70
Percentage of ProfitLoss0.70.0-0.4-0.30.0-0.7-0.2-0.10.0-0.2-0.2-0.4-1.0-0.9-0.2-0.10.0-0.3-0.30.2-0.3-0.6-0.20.30.1-0.2-0.40.4-0.7-3.5-0.80.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.0-0.0-0.00.0-0.1-0.0-0.00.0-0.0-0.0-0.0-0.1-0.1-0.0-0.00.0-0.0-0.00.0-0.0-0.0-0.00.00.0-0.0-0.00.0-0.1-0.2-0.10.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:SegmentDiscontinuedOperations0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value-387509742958760636116215971285196810731194870744932101610717381111158962627770511239471569105910237136221034399809-7213889301042
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-5.36.28.710.98.97.211.716.013.521.512.914.210.39.813.014.216.310.713.717.87.82.76.09.48.714.39.79.26.76.29.23.56.8-7.33.17.08.5

Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest

Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value-385511744959762638116215971285196810721193870744933101610717381112158862427570411219461570105710217126131032397808-7243889291039
Percentage of ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-5.36.28.710.98.97.211.716.013.521.512.914.210.39.813.014.216.310.713.717.87.82.76.09.48.714.49.79.26.76.19.23.56.8-7.33.17.08.5

Net Income Loss

Net Income Loss Available To Common Stockholders Basic

us-gaap:StatementOperatingActivitiesSegment

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic

us-gaap:SegmentContinuingOperations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value141609965100381469311131654123018961058113480476995310911029796118713251165796125711719421173854922904661849767
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.97.411.311.49.57.811.216.612.920.812.713.59.510.213.315.315.711.614.614.814.67.910.79.88.610.77.98.38.56.67.56.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:SegmentContinuingOperations0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:SegmentDiscontinuedOperations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value10-4-30-5-2-10-4-2-4-8-7-2-10-2-33-3-5-331-2-34-6-22-70
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic0.70.0-0.4-0.30.0-0.7-0.2-0.10.0-0.2-0.2-0.4-1.0-0.9-0.2-0.10.0-0.3-0.30.2-0.3-0.6-0.20.30.1-0.2-0.40.4-0.7-3.3-0.80.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.0-0.0-0.00.0-0.1-0.0-0.00.0-0.0-0.0-0.0-0.1-0.1-0.0-0.00.0-0.0-0.00.0-0.0-0.0-0.00.00.0-0.0-0.00.0-0.1-0.2-0.10.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:SegmentDiscontinuedOperations0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Income Loss Available To Common Stockholders Diluted

us-gaap:StatementOperatingActivitiesSegment

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted

us-gaap:SegmentContinuingOperations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value141609965100381468811131654123018961058113480476995310911029796118713251165796125711719421173854922904661849767
Percentage of NetIncomeLossAvailableToCommonStockholdersDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.97.411.311.49.57.811.216.612.920.812.713.59.510.213.315.315.711.614.614.814.67.910.79.88.610.77.98.38.56.67.56.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:SegmentContinuingOperations0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:SegmentDiscontinuedOperations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value10-4-30-5-2-10-4-2-4-8-7-2-10-2-33-3-5-331-2-34-6-22-70
Percentage of NetIncomeLossAvailableToCommonStockholdersDiluted0.70.0-0.4-0.30.0-0.7-0.2-0.10.0-0.2-0.2-0.4-1.0-0.9-0.2-0.10.0-0.3-0.30.2-0.3-0.6-0.20.30.1-0.2-0.40.4-0.7-3.3-0.80.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.0-0.0-0.00.0-0.1-0.0-0.00.0-0.0-0.0-0.0-0.1-0.1-0.0-0.00.0-0.0-0.00.0-0.0-0.0-0.00.00.0-0.0-0.00.0-0.1-0.2-0.10.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:SegmentDiscontinuedOperations0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Income Loss Attributable To Noncontrolling Interest

Assets

us-gaap:Assets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value311003043530114311712988928278286962702326896262062524324118237682344223419234352357222757239352460524006242832563126656278272729826811250482467724220251042354523609228392826725302
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value311003043530114311712988928278286962702326896262062524324118237682344223419234352357222757239352460524006242832563126656278272729826811250482467724220251042354523609228392826725302
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value732480447888107211013810257110441060297288949732668666462604860826283634465507328792774788314984310753117911247811874120321164111139123121149211310105931402511535
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets23.526.426.234.433.936.338.539.236.234.129.028.527.225.826.026.826.928.830.632.231.234.238.440.342.445.744.348.047.246.049.048.847.946.449.645.6

Assets Current

us-gaap:AssetsCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value9692951096301108810286105661138312349120681173811062100759681959995539983103249789111981199011647116451293213705149931459914625130321265512286133951236612098114351671813779
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets31.231.232.035.634.437.439.745.744.944.843.841.840.740.940.842.643.843.046.848.748.548.050.551.453.953.554.552.051.350.753.452.551.250.159.154.5

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-31
Value1596858476127933933252123841840152312047344858757401060131892414741325161610311185203027024450441432332879273235271950167010655609468743834222
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.12.81.64.11.11.21.88.86.85.84.83.02.03.73.24.55.64.16.25.46.74.24.67.69.716.316.512.911.711.314.08.37.14.719.80.00.016.7

Short Term Investments

us-gaap:ShortTermInvestments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value1991965352423892944933104213071295127811761147109010231332106416021989147815931544129914020
Percentage of ShortTermInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets0.60.60.20.21.43.23.33.53.95.05.15.34.94.94.74.45.74.76.78.16.26.66.04.95.00.0

Accounts Receivable Net Current

us-gaap:AccountsReceivableNetCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value288529813331357635083355388336993642335930972904311727162702263325082363272431792903322638983993389338283766378736853720381436673973358237863482
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets9.39.811.111.511.711.913.513.713.512.812.312.013.111.611.511.210.610.411.412.912.113.315.215.014.014.014.015.114.915.415.215.616.815.713.413.8

Receivables Net Current

Inventory Net

us-gaap:InventoryNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value397345884446468544964515459640964257421741774007387538094015400939784051413841794267451753595326558952795382519752705075523457595208549956824824
Percentage of InventoryNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets12.815.114.815.015.016.016.015.215.816.116.516.616.316.217.117.116.917.817.317.017.818.620.920.020.119.320.120.721.421.020.824.522.124.120.119.1

Inventory Finished Goods

Inventory L I F O Reserve

us-gaap:InventoryLIFOReserve



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value670798119449973270688620467
Percentage of InventoryLIFOReserve100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.22.84.62.10.31.12.52.62.0

Other Assets Current

Prepaid Expense And Other Assets Current

us-gaap:PrepaidExpenseAndOtherAssetsCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value8447361150128513291255122410451070114711049648529238521081100912261059112111951054739784115683078457762257053275510021040
Percentage of PrepaidExpenseAndOtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.72.43.84.14.44.44.33.94.04.44.44.03.63.93.64.64.35.44.44.65.04.32.92.94.23.02.92.32.52.42.13.24.24.6

Noncurrent Assets

us-gaap:StatementGeographical

us-gaap:NoncurrentAssets

country:DE



Period End2019-12-312018-12-312017-12-312012-12-312011-12-31
Value14761527141717471754
Percentage of NoncurrentAssets100.0100.0100.0100.0100.0
Percentage of Assets4.85.45.47.27.7
Percentage of Assets country:DE0.00.00.00.00.0

country:FR



Period End2019-12-312018-12-312017-12-312012-12-312011-12-31
Value540565551557558
Percentage of NoncurrentAssets36.637.038.931.931.8
Percentage of Assets1.82.02.12.32.4
Percentage of Assets country:FR0.00.00.00.00.0

country:IT



Period End2019-12-312018-12-312017-12-31
Value326343329
Percentage of NoncurrentAssets22.122.523.2
Percentage of Assets1.11.21.3
Percentage of Assets country:IT0.00.00.0

country:MX



Period End2019-12-312018-12-312017-12-31
Value249254198
Percentage of NoncurrentAssets16.916.614.0
Percentage of Assets0.80.90.8
Percentage of Assets country:MX0.00.00.0

country:NL



Period End2019-12-312018-12-312017-12-312012-12-312011-12-31
Value814757779730749
Percentage of NoncurrentAssets55.149.655.041.842.7
Percentage of Assets2.72.73.03.03.3
Percentage of Assets country:NL0.00.00.00.00.0

country:US



Period End2019-12-312018-12-312017-12-312012-12-312011-12-31
Value1199910346876153655060
Percentage of NoncurrentAssets812.9677.5618.3307.1288.5
Percentage of Assets39.436.633.422.222.2
Percentage of Assets country:US0.00.00.00.00.0

lyb:NonReportableGeographicalComponents



Period End2019-12-312018-12-312017-12-31
Value170117301585
Percentage of NoncurrentAssets115.2113.3111.9
Percentage of Assets5.66.16.0
Percentage of Assets lyb:NonReportableGeographicalComponents0.00.00.0

srt:ReportableGeographicalComponents



Period End2019-12-312018-12-312017-12-31
Value171051552213620
Percentage of NoncurrentAssets1158.91016.5961.2
Percentage of Assets56.254.952.0
Percentage of Assets srt:ReportableGeographicalComponents0.00.00.0

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value21664212602052819989192441870118116171641705716570160391554815118146351456314047135581291012602122361176912050117841183511453111511076410268986696269110872687578444
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets69.769.968.264.164.466.163.163.563.463.263.564.563.662.462.259.957.556.752.749.749.049.646.044.441.240.840.141.040.039.736.337.137.137.0

us-gaap:PropertyPlantAndEquipmentByType

lyb:MajorTurnarounds



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value186617501765152812091185
Percentage of PropertyPlantAndEquipmentGross8.89.410.710.49.49.8
Percentage of Assets6.16.26.76.55.34.9
Percentage of Assets lyb:MajorTurnarounds0.00.00.00.00.00.0

us-gaap:Building



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value1090924826682672628642587
Percentage of PropertyPlantAndEquipmentGross5.14.95.04.75.25.25.86.1
Percentage of Assets3.63.33.22.93.02.62.42.4
Percentage of Assets us-gaap:Building0.00.00.00.00.00.00.00.0

us-gaap:ConstructionInProgress



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value331022551421108212721143962121611121146987917744827785
Percentage of PropertyPlantAndEquipmentGross15.612.18.67.49.99.58.611.310.811.610.310.18.59.49.3
Percentage of Assets10.98.05.44.65.64.73.54.54.44.64.13.73.23.53.4
Percentage of Assets us-gaap:ConstructionInProgress0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:FurnitureAndFixtures



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value2625161413151613
Percentage of PropertyPlantAndEquipmentGross0.10.10.10.10.10.10.10.1
Percentage of Assets0.10.10.10.10.10.10.10.1
Percentage of Assets us-gaap:FurnitureAndFixtures0.00.00.00.00.00.00.00.0

us-gaap:Land



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value359364313278283297320309303300304301296306301
Percentage of PropertyPlantAndEquipmentGross1.71.91.91.92.22.52.92.93.03.03.23.33.43.53.6
Percentage of Assets1.21.31.21.21.21.21.21.21.21.21.31.21.31.31.3
Percentage of Assets us-gaap:Land0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:MachineryAndEquipment



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value11572106841002990617718726868356023
Percentage of PropertyPlantAndEquipmentGross54.457.160.561.959.860.361.362.6
Percentage of Assets38.037.838.338.733.929.925.024.9
Percentage of Assets us-gaap:MachineryAndEquipment0.00.00.00.00.00.00.00.0

us-gaap:OtherMachineryAndEquipment



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value2968263921411932168914671315993
Percentage of PropertyPlantAndEquipmentGross14.014.112.913.213.112.211.810.3
Percentage of Assets9.89.38.28.27.46.04.84.1
Percentage of Assets us-gaap:OtherMachineryAndEquipment0.00.00.00.00.00.00.00.0

us-gaap:TechnologyEquipment



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value6960595854473223
Percentage of PropertyPlantAndEquipmentGross0.30.30.40.40.40.40.30.2
Percentage of Assets0.20.20.20.20.20.20.10.1
Percentage of Assets us-gaap:TechnologyEquipment0.00.00.00.00.00.00.00.0

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value7277713068596704644762246094585458085573530249974757449845064366418539193809360033393292318430952897269425412289208719301698148913311111
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets23.423.422.821.521.622.021.221.721.621.321.020.720.019.219.218.617.817.215.914.613.913.612.411.610.49.99.59.18.58.06.86.35.64.9

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value143871413013669132851279712477120221131011249109971073710551103611013710057968193738991879386368430875886008740855684578223797977797696741272377426733373637190
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets46.346.445.442.642.844.141.941.941.842.042.543.743.643.242.941.339.839.536.735.135.136.133.632.830.731.030.731.931.531.829.530.731.532.126.028.4

us-gaap:StatementBusinessSegments

lyb:AdvancedPolymerSolutions



Period End2019-12-312018-12-312017-12-31
Value806818350
Percentage of PropertyPlantAndEquipmentNet5.76.63.2
Percentage of Assets2.62.91.3
Percentage of Assets lyb:AdvancedPolymerSolutions0.00.00.0

lyb:IntermediatesAndDerivatives



Period End2019-12-312018-12-312017-12-312012-12-312011-12-31
Value36402663245718301738
Percentage of PropertyPlantAndEquipmentNet25.821.322.323.823.7
Percentage of Assets12.09.49.47.67.6
Percentage of Assets lyb:IntermediatesAndDerivatives0.00.00.00.00.0

lyb:OlefinsAndPolyolefinsAmericas



Period End2019-12-312018-12-312017-12-312012-12-312011-12-31
Value64545769502521671945
Percentage of PropertyPlantAndEquipmentNet45.746.245.728.226.5
Percentage of Assets21.220.419.28.98.5
Percentage of Assets lyb:OlefinsAndPolyolefinsAmericas0.00.00.00.00.0

lyb:OlefinsAndPolyolefinsEuropeAsiaInternational



Period End2019-12-312018-12-312017-12-312012-12-312011-12-31
Value17061745179424372385
Percentage of PropertyPlantAndEquipmentNet12.114.016.331.732.5
Percentage of Assets5.66.26.810.110.4
Percentage of Assets lyb:OlefinsAndPolyolefinsEuropeAsiaInternational0.00.00.00.00.0

lyb:Refining



Period End2019-12-312018-12-312017-12-312012-12-312011-12-31
Value119012161130985943
Percentage of PropertyPlantAndEquipmentNet8.49.710.312.812.9
Percentage of Assets3.94.34.34.14.1
Percentage of Assets lyb:Refining0.00.00.00.00.0

lyb:Technology



Period End2019-12-312018-12-312017-12-312012-12-312011-12-31
Value334266241274309
Percentage of PropertyPlantAndEquipmentNet2.42.12.23.64.2
Percentage of Assets1.10.90.91.11.4
Percentage of Assets lyb:Technology0.00.00.00.00.0

Goodwill

us-gaap:Goodwill



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value1800189118481848180318141819562578570570559531528543542548536543543533566576602605605598588582591585576595585598595
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.86.26.15.96.06.46.32.12.12.22.32.32.22.32.32.32.32.42.32.22.22.32.22.32.22.22.22.32.42.42.32.42.52.62.12.4

us-gaap:StatementBusinessSegments

lyb:AdvancedPolymerSolutions



Period End2019-12-312018-12-312018-08-212017-12-312016-12-31
Value1380130012594141
Percentage of Goodwill73.071.70.07.27.8
Percentage of Assets4.54.60.00.20.2
Percentage of Assets lyb:AdvancedPolymerSolutions0.00.00.00.00.0

lyb:IntermediatesAndDerivatives



Period End2019-12-312018-12-312017-12-312016-12-312012-12-312011-12-31
Value228229237219245242
Percentage of Goodwill12.112.641.641.541.541.4
Percentage of Assets0.70.80.90.91.01.1
Percentage of Assets lyb:IntermediatesAndDerivatives0.00.00.00.00.00.0

lyb:OlefinsAndPolyolefinsEuropeAsiaInternational



Period End2019-12-312018-12-312017-12-312016-12-312012-12-312011-12-31
Value11211412198175172
Percentage of Goodwill5.96.321.218.629.629.4
Percentage of Assets0.40.40.50.40.70.8
Percentage of Assets lyb:OlefinsAndPolyolefinsEuropeAsiaInternational0.00.00.00.00.00.0

lyb:Technology



Period End2019-12-312018-12-312017-12-312016-12-312012-12-312011-12-31
Value999899
Percentage of Goodwill0.50.51.61.51.51.5
Percentage of Assets0.00.00.00.00.00.0
Percentage of Assets lyb:Technology0.00.00.00.00.00.0

Intangible Assets Net Excluding Goodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value8088698418929459659825285675684804995175505625886186406446716957697998388709049349669991038107311031149117712371360
Percentage of IntangibleAssetsNetExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.62.92.82.93.23.43.42.02.12.21.92.12.22.32.42.52.62.82.72.72.93.23.13.13.13.33.53.94.04.34.34.74.95.24.45.4

Finite Lived Intangible Assets Net

us-gaap:FiniteLivedIntangibleAssetsNet



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value86996556855064076990410381177
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.93.42.22.32.83.23.34.35.2

us-gaap:FiniteLivedIntangibleAssetsByMajorClass

lyb:EmissionAllowances



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value281276318276328400465533603
Percentage of FiniteLivedIntangibleAssetsNet32.328.656.050.251.252.051.451.351.2
Percentage of Assets0.91.01.21.21.41.61.72.22.6
Percentage of Assets lyb:EmissionAllowances0.00.00.00.00.00.00.00.00.0

us-gaap:ComputerSoftwareIntangibleAsset



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value1357101421273849
Percentage of FiniteLivedIntangibleAssetsNet1.50.51.21.82.22.73.03.74.2
Percentage of Assets0.00.00.00.00.10.10.10.20.2
Percentage of Assets us-gaap:ComputerSoftwareIntangibleAsset0.00.00.00.00.00.00.00.00.0

us-gaap:CustomerContracts



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value147179196212240273316366417
Percentage of FiniteLivedIntangibleAssetsNet16.918.534.538.537.535.535.035.335.4
Percentage of Assets0.50.60.70.91.11.11.21.51.8
Percentage of Assets us-gaap:CustomerContracts0.00.00.00.00.00.00.00.00.0

us-gaap:CustomerRelationships



Period End2019-12-312018-12-312017-12-31
Value2672920
Percentage of FiniteLivedIntangibleAssetsNet30.730.30.0
Percentage of Assets0.91.00.0
Percentage of Assets us-gaap:CustomerRelationships0.00.00.0

us-gaap:InProcessResearchAndDevelopment



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value27364752587596101
Percentage of FiniteLivedIntangibleAssetsNet3.13.78.39.59.19.810.69.7
Percentage of Assets0.10.10.20.20.30.30.40.4
Percentage of Assets us-gaap:InProcessResearchAndDevelopment0.00.00.00.00.00.00.00.0

us-gaap:TradeSecrets



Period End2019-12-312018-12-312017-12-31
Value69800
Percentage of FiniteLivedIntangibleAssetsNet7.98.30.0
Percentage of Assets0.20.30.0
Percentage of Assets us-gaap:TradeSecrets0.00.00.0

us-gaap:TrademarksAndTradeNames



Period End2019-12-312018-12-312017-12-31
Value65970
Percentage of FiniteLivedIntangibleAssetsNet7.510.10.0
Percentage of Assets0.20.30.0
Percentage of Assets us-gaap:TrademarksAndTradeNames0.00.00.0

Deferred Tax Assets Liabilities Net

Other Assets Noncurrent

us-gaap:OtherAssetsNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value902439497386387353342224221261303398577618607623559674673670709481583593624619229221233246292261245266264273
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.91.41.71.21.31.21.20.80.81.01.21.72.42.62.62.72.43.02.82.73.02.02.32.22.22.30.90.90.91.01.21.11.01.20.91.1

Liabilities Current

us-gaap:LiabilitiesCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value552151987388753870125513624254514598477746124131437945404310435144414349519352295060543756345628572055105378503651075096482542444946501851784831
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets17.817.124.524.223.519.521.820.217.118.218.317.118.419.418.418.618.819.121.721.321.122.422.021.120.620.220.120.120.721.019.218.020.922.018.319.1

Long Term Debt Current

Accounts Payable Current

Other Accrued Liabilities Current

us-gaap:OtherAccruedLiabilitiesCurrent



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value261283263103108718094149
Percentage of OtherAccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.91.01.00.40.50.30.30.40.7

Accrued Income Taxes Current

us-gaap:AccruedIncomeTaxesCurrent



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value661638631131915353736
Percentage of AccruedIncomeTaxesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.20.11.51.31.40.60.00.20.2

Long Term Debt

us-gaap:FairValueByMeasurementFrequency, lyb:DerivativeAndNonderivativeInstrumentsClassification

us-gaap:LongTermDebt

us-gaap:FairValueMeasurementsNonrecurring, lyb:NonDerivative



Period End2020-03-312019-12-312019-09-302019-06-302018-12-312018-03-312017-12-312017-03-312016-12-31
Value12155116099621758284928510852684158382
Percentage of LongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets39.138.131.924.330.031.632.535.435.8
Percentage of Assets us-gaap:FairValueMeasurementsNonrecurring lyb:NonDerivative0.00.00.00.00.00.00.00.00.0

Long Term Debt Noncurrent

Deferred Tax Liabilities Noncurrent

Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent

country:US, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-31
Value234216262258
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent100.0100.0100.0100.0
Percentage of Assets0.80.81.01.1
Percentage of Assets country:US us-gaap:OtherPostretirementBenefitPlansDefinedBenefit0.00.00.00.0

us-gaap:ForeignPlan, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2019-12-312018-12-31
Value7858
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent33.326.9
Percentage of Assets0.30.2
Percentage of Assets us-gaap:ForeignPlan us-gaap:OtherPostretirementBenefitPlansDefinedBenefit0.00.0

Minority Interest

us-gaap:MinorityInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value1919182222232511112252525242424242328303235353635373940495153545761
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.10.10.10.10.00.00.00.00.00.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.20.20.20.20.20.20.20.2

Other Liabilities Noncurrent

us-gaap:OtherLiabilitiesNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value280822131801187618301897201718052350227523262253213021132151214321252036204420632038212217951851183818392278232523062327215322082281227720212183
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets9.07.36.06.06.16.77.06.78.78.79.29.39.09.09.29.19.08.98.58.48.58.77.06.96.66.78.59.39.39.68.69.49.710.07.18.6

Stockholders Equity

us-gaap:StockholdersEquity



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value732480447888107211013810257110441060297288949732668666462604860826283634465507328792774788314984310753117911247811874120321164111139123121149211310105931402511535
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets23.526.426.234.433.936.338.539.236.234.129.028.527.225.826.026.826.928.830.632.231.234.238.440.342.445.744.348.047.246.049.048.847.946.449.645.6

Common Stock Value

us-gaap:CommonStockValue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value191922222222223131313131313131313131313131313131313131313131313131313130
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.1

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value422744358430781872066763645317939166771574614207135061273612282118651126410535984193938569760767756330543046224004316025871946127424541838129884137781587
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets13.614.628.025.124.123.922.566.462.060.156.356.053.652.450.748.144.743.239.234.831.727.924.720.416.614.711.810.37.95.39.87.85.53.713.46.3

Treasury Stock Value

us-gaap:TreasuryStockValue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value55958058982663266822061155162001586515749157541549415062149451451713732130171208610918959888557853639351303345203513984511041061001111201241280
Percentage of TreasuryStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets1.81.919.68.58.97.84.059.959.060.162.464.263.463.862.058.655.253.145.639.036.932.324.919.212.07.55.21.80.40.40.40.50.50.50.50.0

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312017-01-012016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value-2313-1784-1683-1462-1418-1363-1309-1358-1301-1285-1359-1375-1438-1511-1511-1492-1472-1397-1438-1381-1307-1566-1026-510439896-299-505-599-411-401-589-218-4277981
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-7.4-5.9-5.6-4.7-4.7-4.8-4.6-5.0-4.8-4.9-5.4-5.7-6.10.0-6.4-6.4-6.3-5.9-6.3-5.8-5.3-6.5-4.2-2.00.20.40.4-1.1-2.0-2.4-1.7-1.6-2.5-0.9-1.90.30.3

us-gaap:StatementEquityComponents

lyb:AccumulatedNetUnrealizedInvestmentGainLossOnEquitySecuritiesAndEquitySecuritiesAttributableToEquityInvestees



Period End2019-12-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value0000017104900
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax-0.0-0.0-0.0-0.0-0.0-1.3-0.7-0.3-0.6-0.0-0.0
Percentage of Assets0.00.00.00.00.00.10.00.00.00.00.0
Percentage of Assets lyb:AccumulatedNetUnrealizedInvestmentGainLossOnEquitySecuritiesAndEquitySecuritiesAttributableToEquityInvestees0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-03-312011-12-31
Value-701-711-427-432-437-442-452-458-465-421-478-485-491-498-413-418-423-428-434-439-445-449-140-141-143-140-408-414-419-422-298-303
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax30.339.925.429.530.832.434.533.735.732.835.235.334.133.027.728.430.329.831.433.628.443.827.5-327.9-145.9-145.8136.582.069.9102.7136.771.0
Percentage of Assets-2.3-2.3-1.4-1.4-1.5-1.6-1.6-1.7-1.7-1.6-1.9-2.0-2.1-2.1-1.8-1.8-1.8-1.9-1.8-1.8-1.9-1.8-0.5-0.5-0.5-0.5-1.5-1.7-1.7-1.7-1.3-1.3
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss



Period End2020-03-312019-12-312019-09-302019-06-302018-12-312018-09-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-312013-09-302013-06-302012-12-31
Value-201100-2-4-6-21-12-11-11-5-1000110000
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax0.1-0.0-0.1-0.1-0.0-0.00.20.30.40.1-0.10.80.70.80.30.1-0.0-0.0-0.0-0.22.30.0-0.0-0.0-0.0
Percentage of Assets-0.00.00.00.00.00.0-0.0-0.0-0.0-0.00.0-0.1-0.0-0.0-0.0-0.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedTranslationAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-03-312011-12-31
Value-1072-873-959-845-863-853-824-816-721-761-796-819-903-939-839-863-833-926-903-848-1008-497-358196254236109-91-1801180-124
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax46.348.957.057.860.962.662.960.155.459.258.659.662.862.156.258.659.664.465.464.964.448.470.2455.8259.2245.8-36.518.030.1-2.7-36.729.0
Percentage of Assets-3.4-2.9-3.2-2.7-2.9-3.0-2.9-3.0-2.7-2.9-3.2-3.4-3.8-4.0-3.6-3.7-3.5-4.1-3.8-3.4-4.2-2.0-1.40.70.90.90.4-0.4-0.70.00.3-0.5
Percentage of Assets us-gaap:AccumulatedTranslationAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AociDerivativeQualifyingAsHedgeExcludedComponentParent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value-538-200-298-186-118-68-33-84-115-120-75
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax23.311.217.712.78.35.02.56.28.89.35.0
Percentage of Assets-1.7-0.7-1.0-0.6-0.4-0.2-0.1-0.3-0.4-0.5-0.3
Percentage of Assets us-gaap:AociDerivativeQualifyingAsHedgeExcludedComponentParent0.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value542124218761186657129714411727100614821486162561317131332126113001160176814461468201614341797801164111311264799131020475099218215311026221
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.415.222.013.47.714.614.517.310.616.217.919.37.322.618.517.719.816.921.816.218.320.012.215.17.315.010.411.47.513.018.24.57.80.812.27.71.8

us-gaap:DebtInstrument, us-gaap:SubsequentEventType

lyb:USD2000millionSeniorCreditAgreement, us-gaap:SubsequentEvent



Period End2019-10-31
Value300
Percentage of NetCashProvidedByUsedInOperatingActivities0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax lyb:USD2000millionSeniorCreditAgreement us-gaap:SubsequentEvent0.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value-663-425-754-278-178-658-2312-400-189-502-200-515-539-770-459-471-5975267-727-443-636-638-246-2011-367-438-389-408-317-266-245-185-50-320-435-216
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-9.1-5.2-8.8-3.1-2.1-7.4-23.3-4.0-2.0-5.5-2.4-6.1-6.4-10.2-6.4-6.6-9.10.80.8-8.1-5.5-6.3-5.4-2.1-18.4-3.4-4.0-3.5-3.8-3.2-2.4-2.2-1.6-0.5-2.6-3.3-1.8

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value884-453-190039-521-766-977-745-520-668-832-887-472-782-1195-1039-333-1744-1684-1021-401-1519-1621-2217-550-1266437-526-234-1808-23950-148-4538-118-32728
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.1-5.5-22.30.4-6.1-8.6-9.8-7.5-5.5-7.3-10.0-10.6-5.6-10.3-16.6-14.6-5.1-25.4-20.7-11.4-5.0-15.1-13.8-18.6-5.0-11.64.0-4.7-2.2-18.0-2.10.4-1.2-46.0-0.9-2.50.2

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value542124218761186657129714411727100614821486162561317131332126113001160176814461468201614341797801164111311264799131020475099218215311026221
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.415.222.013.47.714.614.517.310.616.217.919.37.322.618.517.719.816.921.816.218.320.012.215.17.315.010.411.47.513.018.24.57.80.812.27.71.8

us-gaap:DebtInstrument, us-gaap:SubsequentEventType

lyb:USD2000millionSeniorCreditAgreement, us-gaap:SubsequentEvent



Period End2019-10-31
Value300
Percentage of NetCashProvidedByUsedInOperatingActivities0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax lyb:USD2000millionSeniorCreditAgreement us-gaap:SubsequentEvent0.0

Net Income Loss

Profit Loss

us-gaap:ProfitLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value144612965100381769211131654123118941056113079776395310911030795118613291164791125711769441175851927900623844768599-218895803660
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.07.511.311.49.57.811.216.612.920.712.713.49.510.113.315.315.711.614.614.914.57.810.79.98.610.77.88.38.46.27.56.85.0-2.27.26.05.4

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-28-5922-30-12-8758
Percentage of ProfitLoss-19.4-6.12.2-3.7-1.1-5.34.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.4-0.70.2-0.4-0.1-0.90.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value10555677
Percentage of ProfitLoss6.90.50.50.60.50.40.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.10.10.10.10.10.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AociDerivativeQualifyingAsHedgeExcludedComponentParent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-38-6417-35-18-9451
Percentage of ProfitLoss-26.4-6.61.7-4.3-1.6-5.74.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.5-0.80.2-0.4-0.2-0.90.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AociDerivativeQualifyingAsHedgeExcludedComponentParent0.00.00.00.00.00.00.0

us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value0000000000-1-10010001-1-2-2-1-2-11-2-2-1-9-2-2-1-3
Percentage of ProfitLoss0.00.00.00.00.00.00.00.00.00.0-0.1-0.10.00.00.10.00.00.00.1-0.1-0.2-0.3-0.1-0.2-0.10.1-0.2-0.2-0.1-1.4-0.2-0.3-0.21.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.00.00.00.00.00.0-0.0-0.00.00.00.00.00.00.00.0-0.0-0.0-0.0-0.0-0.0-0.00.0-0.0-0.0-0.0-0.1-0.0-0.0-0.0-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Parent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value144612965100381769211131654123118941057113179776395210911030795118513301166793125811789451174853929901632846770600-215
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.1100.1100.0100.099.9100.0100.0100.099.9100.1100.2100.3100.1100.2100.199.9100.2100.2100.1101.4100.2100.3100.298.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.07.511.311.49.57.811.216.612.920.712.713.59.510.113.215.315.711.614.614.914.67.910.79.98.710.77.88.48.46.37.56.85.1-2.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Parent0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value144612965100381769211131654123118941057113179776395210911030795118513301166793125811789451174853929901632846770600-215
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.1100.1100.0100.099.9100.0100.0100.099.9100.1100.2100.3100.1100.2100.199.9100.2100.2100.1101.4100.2100.3100.298.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.07.511.311.49.57.811.216.612.920.712.713.59.510.113.215.315.711.614.614.914.67.910.79.98.710.77.88.48.46.37.56.85.1-2.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:StatementOperatingActivitiesSegment

us-gaap:SegmentContinuingOperations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value143612969100681769711151655123118981058113480577095510921030797118913261167796126011739431177854923906645851768
Percentage of ProfitLoss99.3100.0100.4100.3100.0100.7100.2100.1100.0100.2100.2100.4101.0100.9100.2100.1100.0100.3100.399.8100.3100.6100.299.799.9100.2100.499.6100.7103.5100.8100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.07.511.411.49.57.911.216.612.920.812.713.59.510.213.315.315.711.614.614.814.67.910.79.88.610.87.98.38.56.47.56.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:SegmentContinuingOperations0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:SegmentDiscontinuedOperations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value10-4-30-5-2-10-4-2-4-8-7-2-10-2-33-3-5-331-2-34-6-22-70
Percentage of ProfitLoss0.70.0-0.4-0.30.0-0.7-0.2-0.10.0-0.2-0.2-0.4-1.0-0.9-0.2-0.10.0-0.3-0.30.2-0.3-0.6-0.20.30.1-0.2-0.40.4-0.7-3.5-0.80.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.0-0.0-0.00.0-0.1-0.0-0.00.0-0.0-0.0-0.0-0.1-0.1-0.0-0.00.0-0.0-0.00.0-0.0-0.0-0.00.00.0-0.0-0.00.0-0.1-0.2-0.10.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:SegmentDiscontinuedOperations0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Depreciation Depletion And Amortization

Increase Decrease In Inventories

us-gaap:IncreaseDecreaseInInventories



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value-121117-1611703-61211-6455181245144-1003-11-15228153-1454-69221-252305-131131-91242-187-633725-346-132245-180799
Percentage of IncreaseDecreaseInInventories100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value-663-425-754-278-178-658-2312-400-189-502-200-515-539-770-459-471-5975267-727-443-636-638-246-2011-367-438-389-408-317-266-245-185-50-320-435-216
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-9.1-5.2-8.8-3.1-2.1-7.4-23.3-4.0-2.0-5.5-2.4-6.1-6.4-10.2-6.4-6.6-9.10.80.8-8.1-5.5-6.3-5.4-2.1-18.4-3.4-4.0-3.5-3.8-3.2-2.4-2.2-1.6-0.5-2.6-3.3-1.8

Payments To Acquire Property Plant And Equipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value660731742622599698482496429401318407421567586563527483373278306403338415343360423387391333266233228289279261221
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Payments To Acquire Investments

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value884-453-190039-521-766-977-745-520-668-832-887-472-782-1195-1039-333-1744-1684-1021-401-1519-1621-2217-550-1266437-526-234-1808-23950-148-4538-118-32728
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.1-5.5-22.30.4-6.1-8.6-9.8-7.5-5.5-7.3-10.0-10.6-5.6-10.3-16.6-14.6-5.1-25.4-20.7-11.4-5.0-15.1-13.8-18.6-5.0-11.64.0-4.7-2.2-18.0-2.10.4-1.2-46.0-0.9-2.50.2

Proceeds From Issuance Of Long Term Debt

us-gaap:ProceedsFromIssuanceOfLongTermDebt



Period End2020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302011-12-312011-09-30
Value50029350000000099000081200098400099211471000010000
Percentage of ProceedsFromIssuanceOfLongTermDebt100.0100.00.00.00.00.00.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.0100.0100.00.00.00.00.0100.00.0

us-gaap:DebtInstrument

lyb:GuaranteedNotesdue2049



Period End2019-10-31
Value974
Percentage of ProceedsFromIssuanceOfLongTermDebt0.0

lyb:TermLoandue2022



Period End2019-12-312019-07-31
Value19501000
Percentage of ProceedsFromIssuanceOfLongTermDebt66.40.0

us-gaap:RevolvingCreditFacility



Period End2020-03-31
Value500
Percentage of ProceedsFromIssuanceOfLongTermDebt100.0

us-gaap:DebtInstrument, us-gaap:SubsequentEventType

lyb:GuaranteedNotesDue20252030And2050, us-gaap:SubsequentEvent



Period End2020-04-30
Value1974
Percentage of ProceedsFromIssuanceOfLongTermDebt0.0

lyb:Guaranteednotesdue2049, us-gaap:SubsequentEvent



Period End2019-10-31
Value974
Percentage of ProceedsFromIssuanceOfLongTermDebt0.0

lyb:USD2000millionSeniorCreditAgreement, us-gaap:SubsequentEvent



Period End2019-10-31
Value974
Percentage of ProceedsFromIssuanceOfLongTermDebt0.0

Repayments Of Long Term Debt

us-gaap:RepaymentsOfLongTermDebt



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312013-12-312013-09-302012-12-312012-09-302011-12-312011-09-30
Value097410000100003753940000010000000000028030
Percentage of RepaymentsOfLongTermDebt0.0100.0100.00.0100.00.0100.00.00.00.00.00.0100.00.00.00.00.00.00.00.00.0100.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:DebtInstrument, us-gaap:SubsequentEventType

us-gaap:RevolvingCreditFacility, us-gaap:SubsequentEvent



Period End2020-04-30
Value500
Percentage of RepaymentsOfLongTermDebt0.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.0
Percentage of LongTermDebtAndCapitalLeaseObligations us-gaap:RevolvingCreditFacility us-gaap:SubsequentEvent0.0

Payments For Repurchase Of Common Stock

us-gaap:PaymentsForRepurchaseOfCommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value4032400512105333135111902964101604378196969861220129977813591441128018661201698981270000
Percentage of PaymentsForRepurchaseOfCommonStock100.00.0100.00.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

Repayments Of Long Term Debt

us-gaap:RepaymentsOfLongTermDebt



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312013-12-312013-09-302012-12-312012-09-302011-12-312011-09-30
Value097410000100003753940000010000000000028030
Percentage of RepaymentsOfLongTermDebt0.0100.0100.00.0100.00.0100.00.00.00.00.00.0100.00.00.00.00.00.00.00.00.0100.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:DebtInstrument, us-gaap:SubsequentEventType

us-gaap:RevolvingCreditFacility, us-gaap:SubsequentEvent



Period End2020-04-30
Value500
Percentage of RepaymentsOfLongTermDebt0.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.0
Percentage of LongTermDebtAndCapitalLeaseObligations us-gaap:RevolvingCreditFacility us-gaap:SubsequentEvent0.0

Debt Instrument Interest Rate Stated Percentage

Effective Income Tax Rate Continuing Operations

us-gaap:EffectiveIncomeTaxRateContinuingOperations



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-31
Value0.3440.1230.1440.1990.172-0.0130.1980.2640.2880.2810.2540.2410.2950.2910.290.2740.2560.2660.2890.2840.3080.2830.3380.2850.3350.3570.3130.285
Percentage of EffectiveIncomeTaxRateContinuingOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber

us-gaap:EmployeeStockOption



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value11100456
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:EmployeeStockOption



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value90.0890.382.9374.1973.1518.7415.6214.51
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice100.0100.0100.0100.0100.0100.0100.0100.0

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

Share Based Compensation

us-gaap:ShareBasedCompensation



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value1612121212691591618813
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Liabilities

us-gaap:DeferredTaxLiabilities



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value197719441565213919221754185824542493
Percentage of DeferredTaxLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Net

us-gaap:DeferredTaxAssetsNet



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value9394705126356768367316721315
Percentage of DeferredTaxAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0

Unrecognized Tax Benefits

us-gaap:UnrecognizedTaxBenefits



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-09-302016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value238199275269269262252544552491464475495548483441
Percentage of UnrecognizedTaxBenefits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Valuation Allowance

us-gaap:DeferredTaxAssetsValuationAllowance



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value851209696125134167551570
Percentage of DeferredTaxAssetsValuationAllowance100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementGeographical

country:CA



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value0283230334178
Percentage of DeferredTaxAssetsValuationAllowance0.023.333.331.226.430.646.7

country:FR



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value23232522272934
Percentage of DeferredTaxAssetsValuationAllowance27.119.226.022.921.621.620.4

country:GB



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value36331716111314
Percentage of DeferredTaxAssetsValuationAllowance42.427.517.716.78.89.78.4

country:NL



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value3121212201313
Percentage of DeferredTaxAssetsValuationAllowance3.510.012.512.516.09.77.8

country:US



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value13131016141412
Percentage of DeferredTaxAssetsValuationAllowance15.310.810.416.711.210.47.2

lyb:OtherValuationAllowanceOnDeferredTaxAsset



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value101100100
Percentage of DeferredTaxAssetsValuationAllowance11.89.20.00.00.80.00.0

Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset



Period End2020-03-312019-12-312019-09-302019-06-302019-03-31
Value14531468151015601534
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0

Cash And Cash Equivalents Period Increase Decrease

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-312014-12-31
Value1633888512130835840153223861840152812117404868787449311033
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Proceeds From Repayments Of Short Term Debt

lyb:DividendsOnSpecialStockOfSubsidiary



Period End2020-03-312019-12-312019-09-302019-06-302019-02-282019-03-31
Value222122
Percentage of DividendsOnSpecialStockOfSubsidiary100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:Parent



Period End2020-03-312019-09-302019-06-302019-03-31
Value2212
Percentage of DividendsOnSpecialStockOfSubsidiary100.0100.0100.0100.0

us-gaap:RetainedEarnings



Period End2020-03-312019-09-302019-06-302019-03-31
Value2212
Percentage of DividendsOnSpecialStockOfSubsidiary100.0100.0100.0100.0

us-gaap:StatementOperatingActivitiesSegment

us-gaap:SegmentContinuingOperations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-31
Value22212
Percentage of DividendsOnSpecialStockOfSubsidiary100.0100.0100.0100.0100.0

lyb:EarningsBeforeInterestTaxesDepreciationAndAmortizationOtherThanFromReportableSegments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value-9-1304101210410400-4-31-4-3-2613-221416-42-1-11
Percentage of EarningsBeforeInterestTaxesDepreciationAndAmortizationOtherThanFromReportableSegments100.0100.00.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

lyb:EarningsBeforeInterestTaxesDepreciationAndAmortizationTotalReportableSegments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value6551185151315751418120017222006190317221821197016211409160517871810142019882188195013922034193516721541153216631582
Percentage of EarningsBeforeInterestTaxesDepreciationAndAmortizationTotalReportableSegments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

lyb:GainLossOnSaleOfBusinessAfterTax



Period End2019-12-31
Value5
Percentage of GainLossOnSaleOfBusinessAfterTax100.0

lyb:IncomeLossFromEquityMethodInvestmentsIncludingImpairments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value046516464368968968181788178811179187939069646468614061435938322746
Percentage of IncomeLossFromEquityMethodInvestmentsIncludingImpairments0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementBusinessSegments

lyb:AdvancedPolymerSolutions



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-102-20000000
Percentage of IncomeLossFromEquityMethodInvestmentsIncludingImpairments0.00.03.9-3.10.00.00.00.00.00.00.0

lyb:IntermediatesAndDerivatives



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value2212222-13340132104235
Percentage of IncomeLossFromEquityMethodInvestmentsIncludingImpairments0.04.32.03.13.15.62.2-1.53.13.74.90.01.23.82.50.90.04.62.23.37.2

lyb:OlefinsAndPolyolefinsAmericas



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value21112121181815179811145122022151287
Percentage of IncomeLossFromEquityMethodInvestmentsIncludingImpairments0.023.923.518.817.222.220.222.117.711.19.914.117.36.414.817.124.217.212.98.910.1

lyb:OlefinsAndPolyolefinsEuropeAsiaInternational



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-33336525126695476696967667067966968797957
Percentage of IncomeLossFromEquityMethodInvestmentsIncludingImpairments0.071.770.681.279.772.277.579.479.285.285.285.981.589.782.782.175.878.284.987.882.6

us-gaap:StatementOperatingActivitiesSegment

lyb:IncrementalCommonSharesAttributableToLiabilityandEquityAwards

us-gaap:SegmentContinuingOperations



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-09-30
Value0.00.00.00.0-1000000.01000000.01000000.00.00.0
Percentage of IncrementalCommonSharesAttributableToLiabilityandEquityAwards0.00.00.00.0100.0100.0100.00.00.0

us-gaap:SegmentDiscontinuedOperations



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-09-30
Value0.00.00.00.0-1000000.01000000.01000000.00.00.0
Percentage of IncrementalCommonSharesAttributableToLiabilityandEquityAwards0.00.00.00.0100.0100.0100.00.00.0

us-gaap:StatementEquityComponents

lyb:MinorityInterestDecreaseAndIncreaseInAdditionalPaidInCapitalFromRedemptions

us-gaap:AdditionalPaidInCapital



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value7-1700-47-56056-2800
Percentage of MinorityInterestDecreaseAndIncreaseInAdditionalPaidInCapitalFromRedemptions100.0100.00.00.0100.0100.00.0100.0100.00.00.0

us-gaap:NoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value05-40-1000000
Percentage of MinorityInterestDecreaseAndIncreaseInAdditionalPaidInCapitalFromRedemptions0.0-29.40.00.02.1-0.00.00.0-0.00.00.0

us-gaap:Parent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value7-1700-47-56056-2800
Percentage of MinorityInterestDecreaseAndIncreaseInAdditionalPaidInCapitalFromRedemptions100.0100.00.00.0100.0100.00.0100.0100.00.00.0

lyb:NetAccruedInterestRelatedToDerivativeGainLossOnDerivativeNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value2-13123-4-3-135567
Percentage of NetAccruedInterestRelatedToDerivativeGainLossOnDerivativeNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

lyb:NetIncomeAvailabletoCompanyShareholders



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value1429631002815111316541231
Percentage of NetIncomeAvailabletoCompanyShareholders100.0100.0100.0100.0100.0100.0100.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

lyb:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForSettlementGainLossBeforeTax

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302017-12-312017-09-302017-06-30
Value100201200
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForSettlementGainLossBeforeTax100.00.00.0100.00.0100.0100.00.00.0

lyb:PaymentsToAcquireEquitySecurities



Period End2019-12-312019-09-302018-12-312018-09-302017-12-312017-09-30
Value33004500
Percentage of PaymentsToAcquireEquitySecurities100.00.00.0100.00.00.0

lyb:ProceedsFromSaleOfEquitySecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value10017016233323200
Percentage of ProceedsFromSaleOfEquitySecurities100.00.00.0100.0100.0100.0100.0100.00.00.0

lyb:SegmentMeasureOfProfitabilityEarningsBeforeInterestTaxesDepreciationAndAmortization



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value6461172151315791428121217322010191317261821197016171406160617831807139420012186195214062035194116681543153116521585
Percentage of SegmentMeasureOfProfitabilityEarningsBeforeInterestTaxesDepreciationAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementBusinessSegments

lyb:AdvancedPolymerSolutions



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value11354102120148867012112382124
Percentage of SegmentMeasureOfProfitabilityEarningsBeforeInterestTaxesDepreciationAndAmortization17.54.66.77.610.47.14.06.06.44.86.8

lyb:IntermediatesAndDerivatives



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value203329390448390379504642486410402339339306304397326212460466337271383430375354427338373
Percentage of SegmentMeasureOfProfitabilityEarningsBeforeInterestTaxesDepreciationAndAmortization31.428.125.828.427.331.329.131.925.423.822.117.221.021.818.922.318.015.223.021.317.319.318.822.222.522.927.920.523.5

lyb:OlefinsAndPolyolefinsAmericas



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value3664986536355166317047007807846168597235636827548787758411014103110401157978736883841951898
Percentage of SegmentMeasureOfProfitabilityEarningsBeforeInterestTaxesDepreciationAndAmortization56.742.543.240.236.152.140.634.840.845.433.843.644.740.042.542.348.655.642.046.452.874.056.950.444.157.254.957.656.7

lyb:OlefinsAndPolyolefinsEuropeAsiaInternational



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value189144291331296127262447518356698699529398584576509427549492357348343319356115204295225
Percentage of SegmentMeasureOfProfitabilityEarningsBeforeInterestTaxesDepreciationAndAmortization29.312.319.221.020.710.515.122.227.120.638.335.532.728.336.432.328.230.627.422.518.324.816.916.421.37.513.317.914.2

lyb:Refining



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value-27222-6-66-15-8484104631045825-3081-10-1314-5993159149-31111013712913482020
Percentage of SegmentMeasureOfProfitabilityEarningsBeforeInterestTaxesDepreciationAndAmortization-42.11.9-0.4-4.2-1.1-6.94.85.23.36.03.21.3-1.95.8-0.6-0.70.8-4.24.67.37.6-22.15.47.17.78.70.51.21.3

lyb:Technology



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value5613883107836198113566847486061457383654557764441717655525966
Percentage of SegmentMeasureOfProfitabilityEarningsBeforeInterestTaxesDepreciationAndAmortization8.711.85.56.85.85.05.75.62.93.92.62.43.74.32.84.14.64.72.22.63.93.12.03.74.63.63.43.64.2

us-gaap:CorporateNonSegment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-9-1304101210410
Percentage of SegmentMeasureOfProfitabilityEarningsBeforeInterestTaxesDepreciationAndAmortization-1.4-1.10.00.30.71.00.60.20.5

us-gaap:StatementOperatingActivitiesSegment

lyb:UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasicAndDiluted

us-gaap:SegmentContinuingOperations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value012212211211111111124244232
Percentage of UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasicAndDiluted0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

us-gaap:AdditionalPaidInCapital



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value-11101110288485324-430-10-1-17-61-12626-632103161853107
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Parent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value1515161328121293010910265662725-817882322711616181316132511
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue-136.4150.0145.5130.01400.0150.0150.0225.0375.0200.0300.0500.0650.0-125.0200.00.0-270.0-200.0-29.413.1-141.3400.0383.3-366.7233.3550.060.0533.3112.572.2320.0433.3250.0157.1

us-gaap:RetainedEarnings



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value1-10-20-20000000000000000000000000000
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue-9.1-10.00.0-20.00.0-25.00.00.00.00.00.00.00.0-0.00.00.0-0.0-0.0-0.0-0.0-0.00.00.0-0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value2565526645225682293637322533046172849-4132-51110154
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue-227.360.045.550.01300.075.050.0125.0275.0100.0200.0400.0550.0-225.0100.00.0-370.0-300.0-129.4-86.9-241.3300.0283.3-466.7133.3450.0-40.0433.312.5-27.8220.0333.3150.057.1

us-gaap:AmortizationOfFinancingCostsAndDiscounts



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-31
Value4433134343444435444444439555664068128
Percentage of AmortizationOfFinancingCostsAndDiscounts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InvestmentType

us-gaap:AvailableForSaleSecuritiesGrossUnrealizedGains

us-gaap:Bonds



Period End2020-03-312019-12-31
Value1000000.0-1000000.0
Percentage of AvailableForSaleSecuritiesGrossUnrealizedGains100.0100.0

us-gaap:InvestmentType

us-gaap:AvailableForSaleSecuritiesGrossUnrealizedLoss

us-gaap:Bonds



Period End2020-03-312019-12-31
Value30
Percentage of AvailableForSaleSecuritiesGrossUnrealizedLoss100.00.0

us-gaap:BusinessCombinationIntegrationRelatedCosts



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value384319162053
Percentage of BusinessCombinationIntegrationRelatedCosts100.0100.0100.0100.0100.0100.0

us-gaap:StatementBusinessSegments

lyb:AdvancedPolymerSolutions



Period End2020-03-312019-03-312018-12-312018-09-30
Value14162049
Percentage of BusinessCombinationIntegrationRelatedCosts0.0100.0100.092.5

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value745376-796950-43-131-1854546312317471254-392134
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge1



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-9522-24-49-40-56884417-2-20-35
Percentage of ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrument

lyb:GuaranteedNotes2Due2027



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-8020-21-35-22-3212113190-9-1
Percentage of ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge184.290.987.571.455.057.1150.0137.570.552.9-0.045.02.9

lyb:GuaranteedNotesDue2022



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value1000000.00.00.0-1000000.00.0-1000000.01000000.0-1000000.0
Percentage of ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge1-1.10.0-0.02.0-0.01.812.5-12.5

lyb:SeniorNotesDue2019



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value0000-11-9-7-8-1-2-4-6-3631264-1936-1422-9-613
Percentage of ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge1-0.00.0-0.0-0.027.516.1-87.5-100.0-2.3-11.8200.030.0102.90.00.00.00.00.00.00.00.00.00.0

lyb:SeniorNotesDue2021



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value-162-3-13-7-142614102-52300
Percentage of ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge116.89.112.526.517.525.025.075.031.858.8-100.025.0-5.70.00.00.0

us-gaap:CommonStockDividendsPerShareCashPaid



Period End2019-12-312019-12-312019-09-302019-09-302019-06-302019-03-312018-12-312018-12-312018-09-302018-09-302018-06-302018-03-312017-12-312017-12-312017-09-302017-09-302017-06-302017-05-312017-03-312016-12-312016-12-312016-09-302016-09-302016-06-302016-03-312015-12-312015-12-312015-09-302015-09-302015-06-302015-05-312015-03-312014-12-312014-12-312014-09-302014-09-302014-05-312014-03-312013-12-312013-12-312013-09-302013-09-302013-06-302013-06-302013-03-312013-03-312012-12-312012-09-302012-09-302012-06-302012-06-302012-03-312012-03-312011-03-31
Value1.051.05000000000000031.051.05000000000000031.051.01.01.01.01.01.01.00.90.89999999999999990.90.89999999999999990.90.90.850.850.85000000000000010.850.85000000000000010.850.780.780.78000000000000020.780.77999999999999980.780.780.70.70.70000000000000020.70.70.70.60.61.10.50.00.50.50.40.43.15000000000000040.40.40.40.40.250.250.0
Percentage of CommonStockDividendsPerShareCashPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:CommonStockDividendsPerShareDeclared



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value1.051.05000000000000031.051.051.01.01.01.01.00.89999999999999990.90.90.850.85000000000000010.85000000000000010.84999999999999990.780.78000000000000020.77999999999999980.780.70.70000000000000020.70.70000000000000010.60.6000000000000001
Percentage of CommonStockDividendsPerShareDeclared100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossPeriodIncreaseDecrease



Period End2020-03-31
Value0.0
Percentage of DebtSecuritiesAvailableForSaleAllowanceForCreditLossPeriodIncreaseDecrease0.0

us-gaap:DeferredIncomeTaxesAndTaxCredits



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value6820796446149292161-804848647502032579172-45272725101-218110548141223198153-21535123581
Percentage of DeferredIncomeTaxesAndTaxCredits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeExcludedComponentGainLossRecognizedInEarnings



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value445556885
Percentage of DerivativeExcludedComponentGainLossRecognizedInEarnings100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsCommonStockCash



Period End2020-03-312019-12-312019-12-312019-09-302019-09-302019-06-302019-03-312018-12-312018-12-312018-09-302018-09-302018-06-302018-03-312018-03-122017-12-312017-12-312017-09-302017-09-302017-06-302017-05-312017-03-312017-03-132016-12-312016-12-312016-09-302016-09-302016-06-302016-03-312016-03-142015-12-312015-12-312015-09-302015-09-302015-06-302015-05-312015-03-312015-03-162014-12-312014-09-302014-05-312014-03-312013-12-312013-12-312013-09-302013-09-302013-06-302013-03-31
Value3513513513513513883723783783893893923953953553553563563613613433433463463513513623363363473473613613683683343343483583703273306102800288229
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:Parent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-03-312011-12-31
Value351351351388372378389392395355356361343346351362336347361368334348358370327330280-143142
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.00.00.0

us-gaap:RetainedEarnings



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-03-312011-12-31
Value351351351388372378389392395355356361343346351362336347361368334348358370327330280-143142
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.00.00.0

us-gaap:EffectOfExchangeRateOnCashAndCashEquivalents



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value-1812-183-1-4-6-3615517298-262-924-18-211-39-15-20-61228515-102035-3417-38-17140128
Percentage of EffectOfExchangeRateOnCashAndCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EquityMethodInvestmentDividendsOrDistributions



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value15881012425107819201191170191360230198995792290145205191359-244107314-370551196
Percentage of EquityMethodInvestmentDividendsOrDistributions100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EquitySecuritiesFvNiGainLoss



Period End2020-03-312019-09-302019-03-312018-09-30
Value007-8
Percentage of EquitySecuritiesFvNiGainLoss0.00.0100.0100.0

us-gaap:EquitySecuritiesFvNiRealizedGainLoss



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value0081110
Percentage of EquitySecuritiesFvNiRealizedGainLoss0.00.0100.0100.0100.0100.00.0

us-gaap:EquitySecuritiesFvNiUnrealizedGainLoss



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value00-96-99-1
Percentage of EquitySecuritiesFvNiUnrealizedGainLoss0.00.0100.0100.0100.0100.0100.0

us-gaap:ForeignCurrencyTransactionGainLossBeforeTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value-7-723111063650-1-511-3-3-143-48-1-11-84-6-6-112-6-17-410
Percentage of ForeignCurrencyTransactionGainLossBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value2187061054111195676012581566143812611357151510399741200132113719721583177715381030163015301265116811321290120489212541048850-8913661194867
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeLossFromDiscontinuedOperationsNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value10-4-30-5-2-10-4-2-4-8-7-2-10-2-33-3-5-331-2-34-6-22-705-245-17-48-22
Percentage of IncomeLossFromDiscontinuedOperationsNetOfTax100.00.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0

us-gaap:IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value0.00.0-0.01-0.010.0-0.010.00.00.0-0.0200000000000000040.0-0.01-0.02-0.01-0.010.00.00.0-0.010.01-0.01-0.01-0.010.010.00.0-0.010.01-0.01-0.04-0.010.00.01-0.42999999999999994-0.03-0.08
Percentage of IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare0.00.0100.0100.00.0100.00.00.00.0100.00.0100.0100.0100.0100.00.00.00.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0

us-gaap:IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value0.00.0-0.01-0.010.0-0.010.00.00.0-0.0200000000000000040.0-0.01-0.02-0.01-0.010.00.00.0-0.010.01-0.01-0.01-0.010.010.00.0-0.010.01-0.01-0.04-0.010.00.01-0.42999999999999994-0.03-0.08
Percentage of IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare0.00.0100.0100.00.0100.00.00.00.0100.00.0100.0100.0100.0100.00.00.00.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccountsPayable



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value-235-24495-207105-456421437244350-28253309-8711150-285-28934-246-361-1595191259-77110-17-89245-42580151-588-1241264
Percentage of IncreaseDecreaseInAccountsPayable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccountsReceivable



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value-4-413-21757206-561-196128196243140-2944326042146135-372-443232-197-598-6141105-42-3712122-213158-218374-193-720105897
Percentage of IncreaseDecreaseInAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InventoryWriteDown



Period End2020-03-312019-12-312019-03-312017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-09-302012-06-30
Value4193300290-6868284181-99271545000071-71
Percentage of InventoryWriteDown100.0100.00.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0100.0100.0

us-gaap:StatementBusinessSegments

lyb:AdvancedPolymerSolutions



Period End2020-03-31
Value2
Percentage of InventoryWriteDown0.5

lyb:IntermediatesAndDerivatives



Period End2020-03-312016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value78-282874461744
Percentage of InventoryWriteDown18.641.241.226.125.4-188.947.8

lyb:OlefinsAndPolyolefinsAmericas



Period End2020-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302012-09-302012-06-30
Value1115979-2143234457171
Percentage of InventoryWriteDown26.520.843.6233.346.732.7100.0100.0-100.0

lyb:OlefinsAndPolyolefinsEuropeAsiaInternational



Period End2020-03-312016-06-302016-03-312015-12-312015-09-30
Value36-4040246
Percentage of InventoryWriteDown8.658.858.88.53.3

lyb:Refining



Period End2020-03-312015-12-312015-09-302015-03-31
Value192127505
Percentage of InventoryWriteDown45.844.727.65.4

us-gaap:InvestmentIncomeInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value33556514151195464445787117137635525424710138
Percentage of InvestmentIncomeInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OciBeforeReclassificationsNetOfTaxAttributableToParent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-586-161-88-268082-24
Percentage of OciBeforeReclassificationsNetOfTaxAttributableToParent100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss



Period End2020-03-312019-09-30
Value-30
Percentage of OciBeforeReclassificationsNetOfTaxAttributableToParent0.5-0.0

us-gaap:AccumulatedTranslationAdjustment



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-195-10621-7-7-7837
Percentage of OciBeforeReclassificationsNetOfTaxAttributableToParent33.365.8-23.926.9-8.8-95.1-154.2

us-gaap:AociDerivativeQualifyingAsHedgeExcludedComponentParent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-388-55-110-1987160-61
Percentage of OciBeforeReclassificationsNetOfTaxAttributableToParent66.234.2125.073.1108.8195.1254.2

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-09-302016-12-312016-09-302015-12-312015-09-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value110101003001310-31111111
Percentage of OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax100.0100.00.0100.00.0100.00.00.0100.00.00.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-09-302014-06-302013-09-302013-06-30
Value-2-1010000022-4-313-10-6-4-1000100
Percentage of OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax100.0100.00.0100.00.00.00.00.00.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.00.00.00.0100.00.00.0

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-85-931-22-181952-20-1-35-66-5
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value0-98000-200015000
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsTax-0.0105.40.0-0.0-0.0-25.00.00.0-0.0-1500.0-0.0-0.0-0.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss



Period End2020-03-312019-12-312019-09-302018-12-312017-12-31
Value-1000-3
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsTax1.2-0.00.00.0300.0

us-gaap:AccumulatedTranslationAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value4-68333117-3-2-12-212
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsTax-4.76.5800.0-13.6-300.037.55.332.715.0200.034.331.8-40.0

us-gaap:AociDerivativeQualifyingAsHedgeExcludedComponentParent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-8811-7-25-471835-17
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsTax103.5-11.8-700.0113.6400.087.594.767.385.0

us-gaap:Range

us-gaap:OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseBeforeAdjustmentsAndTax

srt:Maximum



Period End2020-03-31
Value1000000.0
Percentage of OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseBeforeAdjustmentsAndTax100.0

srt:Minimum



Period End2020-03-31
Value0.0
Percentage of OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseBeforeAdjustmentsAndTax0.0

us-gaap:OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value-33898-112-68-50-3551317-25-21-2122153-48-50-51-36-2393-33-6700-130000
Percentage of OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.00.00.00.00.0

us-gaap:OtherComprehensiveIncomeLossNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value-529-101-221-44-55-5449-575474166373-19-20-7541-57-74259-540-516-553-55239520694-188-10188-371209
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value-529-101-221-44-55-5449-575474166373-19-20-7541-57-74259-540-516-553-55239520694-188
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Parent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value-529-101-221-44-55-5449-575474166373-19-20-7541-57-74259-540-516-553-55239520694-188
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-529-221-44-5549-5754
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value10555677
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent-1.9-2.3-11.4-9.112.2-12.313.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss



Period End2020-03-312019-09-30
Value-20
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent0.4-0.0

us-gaap:AccumulatedTranslationAdjustment



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-199-11418-10-8-9540
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent37.651.6-40.918.2-16.3166.774.1

us-gaap:AociDerivativeQualifyingAsHedgeExcludedComponentParent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-338-112-68-5051317
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent63.950.7154.590.9104.1-54.413.0

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value-10284-5-5-5-10-6-7-7-57-7-6-785-5-5-5-6-5-6-4309-1-23-268-6-5-3135-4-5-5
Percentage of OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value-13-7-6-6-7-7-9-8-8-10-10-9-10-8-8-7-8-9-6-6-1-1-2-3-9-7-7
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherOperatingActivitiesCashFlowStatement



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value-35613758150-398-8731-469-32318414966-6312693-187-7-198237-151109-83185-10880533-21038-10867-2651297729-20862120
Percentage of OtherOperatingActivitiesCashFlowStatement100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForHedgeInvestingActivities



Period End2019-12-312019-09-302018-12-312018-09-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value00228377065800050608500000
Percentage of PaymentsForHedgeInvestingActivities0.00.0100.0100.00.0100.00.00.00.0100.00.0100.00.00.00.00.0

us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:FinancialInstrument

us-gaap:CashFlowHedging, lyb:Commodityfeedstockprice



Period End2019-12-312019-09-302019-06-302019-03-31
Value01514
Percentage of PaymentsForHedgeInvestingActivities0.00.00.00.0

us-gaap:PaymentsForProceedsFromOtherInvestingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value4851229495138174572011140-21331010-2-24-9-2-233513716-2-31350000
Percentage of PaymentsForProceedsFromOtherInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0

us-gaap:PaymentsOfDebtIssuanceCosts



Period End2019-12-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302011-12-312011-09-30
Value1000000017001431012000180230003200
Percentage of PaymentsOfDebtIssuanceCosts100.00.00.00.00.00.00.0100.0100.00.00.0100.0100.0100.0100.00.0100.00.00.00.0100.00.0100.00.00.00.0100.0100.00.0

us-gaap:PaymentsOfDividendsCommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-09-302012-06-302012-06-302012-03-312012-03-312011-12-312011-09-302011-06-302011-03-31
Value3513513513883723783893923953553563613433463513623363473613683343483583703276102726122918122302302302301431432722114570
Percentage of PaymentsOfDividendsCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:PaymentsToAcquireAdditionalInterestInSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value30000630000
Percentage of PaymentsToAcquireAdditionalInterestInSubsidiaries100.00.00.00.0100.00.00.00.00.0

us-gaap:PaymentsToAcquireAvailableForSaleSecurities



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value108000000500024540881012448335025510344349109561761397
Percentage of PaymentsToAcquireAvailableForSaleSecurities100.00.00.00.00.00.00.0100.00.00.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:ProceedsFromDivestitureOfBusinessesAndInterestsInAffiliates

lyb:NocAsiaLtd



Period End2019-11-30
Value5
Percentage of ProceedsFromDivestitureOfBusinessesAndInterestsInAffiliates100.0

us-gaap:ProceedsFromHedgeInvestingActivities



Period End2019-12-312019-09-302018-12-312018-09-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value00236374060900050007950000
Percentage of ProceedsFromHedgeInvestingActivities0.00.0100.0100.00.0100.00.00.00.0100.00.0100.00.00.00.00.0

us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:FinancialInstrument

us-gaap:CashFlowHedging, lyb:Commodityproductsaleprice



Period End2019-12-312019-09-302019-06-302019-03-31
Value01826
Percentage of ProceedsFromHedgeInvestingActivities0.00.00.00.0

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value000233081307533501214933898417240851622102658066522720
Percentage of ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities0.00.00.0100.0100.0100.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value-9-12-4-15-5-3-2-62-1-1-21-2-34-4-165615181719441-35-55-6-2544-45-9
Percentage of ProceedsFromPaymentsForOtherFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromRepaymentsOfCommercialPaper



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value516-526105431-55967014000-315-179-49500-2323177-170-769169262000
Percentage of ProceedsFromRepaymentsOfCommercialPaper100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:DebtInstrument, us-gaap:SubsequentEventType

lyb:USD2000millionSeniorCreditAgreement, us-gaap:SubsequentEvent



Period End2019-10-31
Value726
Percentage of ProceedsFromRepaymentsOfCommercialPaper0.0

us-gaap:ShortTermDebtType

us-gaap:CommercialPaper



Period End2019-10-312019-07-31
Value7261280
Percentage of ProceedsFromRepaymentsOfCommercialPaper0.00.0

us-gaap:ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value0002033081307533501214933898417240851641560437752652347000
Percentage of ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities0.00.00.0100.0100.0100.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value0001800000000
Percentage of ProceedsFromSaleOfAvailableForSaleSecuritiesDebt0.00.00.0100.00.00.00.00.00.00.00.0

us-gaap:ProceedsFromShortTermDebt



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value5000500020000000
Percentage of ProceedsFromShortTermDebt100.00.0100.00.0100.00.00.00.00.0

us-gaap:ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value3983-313814115-74
Percentage of ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-14-6-7-7-9-9-8
Percentage of ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent-35.9-7.222.6-18.4-64.3-7.810.8

us-gaap:AociDerivativeQualifyingAsHedgeExcludedComponentParent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value5389-244523124-66
Percentage of ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent135.9107.277.4118.4164.3107.889.2

us-gaap:ReclassificationFromAociCurrentPeriodTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value11-1624-980228-16-12-21-43-10
Percentage of ReclassificationFromAociCurrentPeriodTax100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-4-1-1-2-2-7-3-2-1-5-3-3-3
Percentage of ReclassificationFromAociCurrentPeriodTax-36.46.2-4.222.2-25.00.0-150.0-7.16.241.714.37.030.0

us-gaap:AociDerivativeQualifyingAsHedgeExcludedComponentParent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value15-1525-7107530-15
Percentage of ReclassificationFromAociCurrentPeriodTax136.493.8104.277.8125.00.0250.0107.193.8

us-gaap:ShortTermDebtType

us-gaap:RepaymentsOfShortTermDebt

lyb:TermLoandue2020



Period End2019-10-31
Value2000
Percentage of RepaymentsOfShortTermDebt100.0

lyb:U.S.ReceivablesFacility



Period End2019-12-31
Value500
Percentage of RepaymentsOfShortTermDebt0.0

us-gaap:RevenueFromRelatedParties



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value191191195220213191229221237205204183187172174196187192215214184202282193217201281273255243264243287241274309292
Percentage of RevenueFromRelatedParties100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans

us-gaap:CommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value81215.041874.040396.040681.042792.038640.028584.026995.027179.025596.028011.027044.026909.025396.025210.028043.017855.020994.08948.08719.07022.09859.05116.06999.05674.07688.05969.08362.05621.00.00.00.00.0
Percentage of StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0

us-gaap:TreasuryStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value81215.041874.040396.040681.042792.038640.028584.026995.027179.025596.028011.027044.026909.025396.025210.028043.017855.020994.08948.08719.07022.09859.05116.06999.05674.07688.05969.08362.05621.00.00.00.00.0
Percentage of StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0

us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation

us-gaap:CommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value00000000000000000000400000000000000
Percentage of StockIssuedDuringPeriodSharesShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value00000000000000000000400000000000000
Percentage of StockIssuedDuringPeriodSharesShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0105.3100.0100.0100.0100.0100.0

us-gaap:TreasuryStockAcquiredAverageCostPerShare



Period End2019-12-312019-09-302018-12-312018-09-302017-12-312017-09-302016-12-312016-09-302015-12-312015-09-302014-12-312014-09-30
Value0.00.9699999999999989-9.2400000000000090.33000000000001250.00.9800000000000040.6700000000000017-0.9800000000000040.960000000000008-0.9300000000000068-2.81000000000000234.25
Percentage of TreasuryStockAcquiredAverageCostPerShare0.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareRepurchaseProgram

lyb:June2018ShareRepurchaseProgram



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value0.00.00.086.38-12.400000000000006-3.269999999999996
Percentage of TreasuryStockAcquiredAverageCostPerShare0.00.00.00.0134.2-990.9

lyb:May2019ShareRepurchaseProgramDomain



Period End2019-12-31
Value0.0
Percentage of TreasuryStockAcquiredAverageCostPerShare0.0

lyb:Sept2019ShareRepurchaseProgram



Period End2020-03-31
Value78.93
Percentage of TreasuryStockAcquiredAverageCostPerShare0.0

us-gaap:TreasuryStockSharesAcquired



Period End2019-12-312019-09-302018-12-312018-09-302017-12-312017-09-302016-12-312016-09-302015-12-312015-09-302014-12-312014-09-30
Value0371130351012151711
Percentage of TreasuryStockSharesAcquired0.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareRepurchaseProgram

lyb:June2018ShareRepurchaseProgram



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value0005113
Percentage of TreasuryStockSharesAcquired0.00.00.00.0100.0100.0

lyb:May2019ShareRepurchaseProgramDomain



Period End2019-12-312019-08-31
Value01
Percentage of TreasuryStockSharesAcquired0.00.0

lyb:Sept2019ShareRepurchaseProgram



Period End2020-03-31
Value50685.0
Percentage of TreasuryStockSharesAcquired0.0

us-gaap:StatementEquityComponents

us-gaap:CommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value0037051133103515108121215715171119158135000
Percentage of TreasuryStockSharesAcquired0.00.0100.00.00.0100.0100.70.00.00.0100.00.00.0100.0100.00.00.0100.0100.00.00.0100.0100.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value000051103103515108121215715171119158135000
Percentage of TreasuryStockSharesAcquired0.00.00.00.00.0100.00.70.00.00.0100.00.00.0100.0100.00.00.0100.0100.00.00.0100.0100.00.00.00.00.00.00.00.00.0

us-gaap:StatementEquityComponents

us-gaap:TreasuryStockSharesRetired

us-gaap:TreasuryStock



Period End2019-12-312018-12-312018-09-302017-12-31
Value600-1780
Percentage of TreasuryStockSharesRetired100.00.0100.00.0

us-gaap:StatementEquityComponents, us-gaap:SubsequentEventType

us-gaap:TreasuryStock, us-gaap:SubsequentEvent



Period End2019-12-31
Value60
Percentage of TreasuryStockSharesRetired100.1

us-gaap:TreasuryStockValueAcquiredCostMethod



Period End2019-12-312019-09-302018-12-312018-09-302017-12-312017-09-302016-12-312016-09-302015-12-312015-09-302014-12-312014-09-30
Value03240105734302664377881171134214661280
Percentage of TreasuryStockValueAcquiredCostMethod0.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareRepurchaseProgram

lyb:June2018ShareRepurchaseProgram



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value0004881057343
Percentage of TreasuryStockValueAcquiredCostMethod0.00.00.00.0100.0100.0

lyb:May2019ShareRepurchaseProgramDomain



Period End2019-12-31
Value0.0
Percentage of TreasuryStockValueAcquiredCostMethod0.0

lyb:Sept2019ShareRepurchaseProgram



Period End2020-03-31
Value4
Percentage of TreasuryStockValueAcquiredCostMethod0.0

us-gaap:StatementEquityComponents

us-gaap:Parent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-312012-09-302012-06-302012-03-312011-12-31
Value4032400488105734334013802664401394377887219681171134279613061466128018131314646943250-1-110
Percentage of TreasuryStockValueAcquiredCostMethod0.00.0100.00.00.0100.0100.00.00.00.0100.00.00.0100.0100.00.00.0100.0100.00.00.0100.0100.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-312012-09-302012-06-302012-03-312011-12-31
Value4032400488105734334013802664401394377887219681171134279613061466128018131314646943250-1-110
Percentage of TreasuryStockValueAcquiredCostMethod0.00.0100.00.00.0100.0100.00.00.00.0100.00.00.0100.0100.00.00.0100.0100.00.00.0100.0100.00.00.00.00.00.00.00.00.00.0

lyb:ASchulmanIntegrationCostAfterTax



Period End2019-12-312019-09-302019-06-302019-03-312018-12-31
Value2933151215
Percentage of ASchulmanIntegrationCostAfterTax100.0100.0100.0100.0100.0

lyb:AccrualForRinsCurrent



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value46721301363222231240
Percentage of AccrualForRinsCurrent100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:DebtInstrument

lyb:AdditionalBorrowingCapacityUncommittedLoans

us-gaap:RevolvingCreditFacility



Period End2020-03-31
Value1000
Percentage of AdditionalBorrowingCapacityUncommittedLoans100.0

lyb:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedEquityMethodInvestments



Period End2019-12-312018-12-312017-12-31
Value0160
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedEquityMethodInvestments0.0100.00.0

lyb:CorporateIncomeTaxRate



Period End2019-12-312018-12-312017-12-31
Value0.210.210.35
Percentage of CorporateIncomeTaxRate100.0100.0100.0

us-gaap:IncomeTaxAuthorityName

us-gaap:HerMajestysRevenueAndCustomsHMRC



Period End2019-12-312018-12-312017-12-31
Value0.190.190.2
Percentage of CorporateIncomeTaxRate90.590.557.1

us-gaap:InternalRevenueServiceIRS



Period End2019-12-312018-12-312017-12-31
Value0.210.210.35
Percentage of CorporateIncomeTaxRate100.0100.0100.0

lyb:DeferredTaxAssetsTaxAttributes



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value168180196255322409514555
Percentage of DeferredTaxAssetsTaxAttributes100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementGeographical

country:CA



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value0283129313870
Percentage of DeferredTaxAssetsTaxAttributes0.015.615.811.49.69.313.6

country:ES



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value8113233385256
Percentage of DeferredTaxAssetsTaxAttributes4.86.116.312.911.812.710.9

country:FR



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value306492140197261323
Percentage of DeferredTaxAssetsTaxAttributes17.935.646.954.961.263.862.8

country:GB



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value36361716172527
Percentage of DeferredTaxAssetsTaxAttributes21.420.08.76.35.36.15.3

country:NL



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value4121319231313
Percentage of DeferredTaxAssetsTaxAttributes2.46.76.67.57.13.22.5

country:US



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value68141016151515
Percentage of DeferredTaxAssetsTaxAttributes40.57.85.16.34.73.72.9

lyb:OtherDeferredTaxAsset



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value2215121510
Percentage of DeferredTaxAssetsTaxAttributes13.18.30.50.80.31.21.9

us-gaap:TaxPeriod

lyb:ExpectedYearOfExpirationInYearFive



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value1212013
Percentage of DeferredTaxAssetsTaxAttributes0.61.10.50.80.03.2

lyb:ExpectedYearOfExpirationInYearFour



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value12201012
Percentage of DeferredTaxAssetsTaxAttributes0.61.11.00.03.12.9

lyb:ExpectedYearOfExpirationInYearOne



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value196020
Percentage of DeferredTaxAssetsTaxAttributes0.65.03.10.00.60.0

lyb:ExpectedYearOfExpirationInYearThree



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value22010110
Percentage of DeferredTaxAssetsTaxAttributes1.21.10.03.93.40.0

lyb:ExpectedYearOfExpirationInYearTwo



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value1191101
Percentage of DeferredTaxAssetsTaxAttributes0.60.64.64.30.00.2

lyb:ExpectedYearOfExpirationIndefinite



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value146125145193257342
Percentage of DeferredTaxAssetsTaxAttributes86.969.474.075.779.883.6

lyb:ExpectedYearOfExpirationThereafter



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value163933394241
Percentage of DeferredTaxAssetsTaxAttributes9.521.716.815.313.010.0

lyb:EquityMethodInvestmentSummarizedFinancialInformationNetAssets



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312012-12-31
Value438243724360344736661523
Percentage of EquityMethodInvestmentSummarizedFinancialInformationNetAssets100.0100.0100.0100.0100.0100.0

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

lyb:EstimatedFutureEmployerContributionsInNextFiscalYearDefinedBenefitAndMultiEmployerPlans

country:US, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-31
Value464644
Percentage of EstimatedFutureEmployerContributionsInNextFiscalYearDefinedBenefitAndMultiEmployerPlans100.0100.0100.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-31
Value79
Percentage of EstimatedFutureEmployerContributionsInNextFiscalYearDefinedBenefitAndMultiEmployerPlans171.7

lyb:InvestmentInManufacturingJointVentures



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value497504486489464469440429424420428423409415399390398397357357373384397418424421397
Percentage of InvestmentInManufacturingJointVentures100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

lyb:EuropeanPOJointVenture



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value15510611099101125152135138
Percentage of InvestmentInManufacturingJointVentures30.822.626.223.925.432.636.134.00.0

lyb:InvestmentInPoJointVentures



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value504469420415397384421397412
Percentage of InvestmentInManufacturingJointVentures100.0100.0100.0100.0100.0100.0100.0100.00.0

lyb:USPOJointVenture



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value349363310316296259269262274
Percentage of InvestmentInManufacturingJointVentures69.277.473.876.174.667.463.966.00.0

us-gaap:StatementBusinessSegments

lyb:IntermediatesAndDerivatives



Period End2019-12-312018-12-312017-12-31
Value504469420
Percentage of InvestmentInManufacturingJointVentures100.0100.0100.0

us-gaap:DebtInstrument

lyb:LettersOfCreditMaximumAmount

us-gaap:RevolvingCreditFacility



Period End2020-03-31
Value500
Percentage of LettersOfCreditMaximumAmount100.0

us-gaap:FairValueByMeasurementFrequency, lyb:DerivativeAndNonderivativeInstrumentsClassification

lyb:LiabilitiesCarryingValueDisclosure

us-gaap:FairValueMeasurementsNonrecurring, lyb:NonDerivative



Period End2020-03-312019-12-312019-09-302019-06-302018-12-312018-03-312017-12-312017-03-312016-12-31
Value128661179011271971085638583859084728472
Percentage of LiabilitiesCarryingValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShortTermDebtType

lyb:LineOfCreditOutstandingAmount

us-gaap:CommercialPaper



Period End2019-12-312018-12-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value2628090317498550500500523500323493500431262
Percentage of LineOfCreditOutstandingAmount100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByMeasurementFrequency, lyb:DerivativeAndNonderivativeInstrumentsClassification

lyb:LoansReceivableFairValueDisclosureCurrent

us-gaap:FairValueMeasurementsNonrecurring, lyb:NonDerivative



Period End2019-12-312019-09-302019-06-302018-12-312018-03-312017-12-312017-03-312016-12-31
Value0518541544586570497369
Percentage of LoansReceivableFairValueDisclosureCurrent0.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrument

lyb:LongTermDebtFairValuePercentage

lyb:GuaranteedNotesdue2049



Period End2019-10-31
Value0.98488
Percentage of LongTermDebtFairValuePercentage100.0

us-gaap:DebtInstrument, us-gaap:SubsequentEventType

lyb:GuaranteedNotesDue2025, us-gaap:SubsequentEvent



Period End2020-04-30
Value0.99911
Percentage of LongTermDebtFairValuePercentage0.0

lyb:GuaranteedNotesDue2030, us-gaap:SubsequentEvent



Period End2020-04-30
Value0.99813
Percentage of LongTermDebtFairValuePercentage0.0

lyb:GuaranteedNotesDue2050, us-gaap:SubsequentEvent



Period End2020-04-30
Value0.99373
Percentage of LongTermDebtFairValuePercentage0.0

lyb:Guaranteednotesdue2049, us-gaap:SubsequentEvent



Period End2019-10-31
Value0.98488
Percentage of LongTermDebtFairValuePercentage100.0

lyb:OtherInvestmentsAndLongTermReceivables



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value22222424232320222217191820201718181221251263844545862641642314213833617072686767
Percentage of OtherInvestmentsAndLongTermReceivables100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

lyb:PrepaidRins



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value3965117123301198
Percentage of PrepaidRins100.0100.0100.0100.0100.0100.0

lyb:TaxAttributes



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value877938784968108213401692
Percentage of TaxAttributes100.0100.0100.0100.0100.0100.0100.0

us-gaap:TaxPeriod

lyb:ExpectedYearOfExpirationInYearFive



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value4341537050
Percentage of TaxAttributes0.53.61.93.80.03.7

lyb:ExpectedYearOfExpirationInYearFour



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value9212904131
Percentage of TaxAttributes1.02.23.70.03.82.3

lyb:ExpectedYearOfExpirationInYearOne



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value284726040
Percentage of TaxAttributes3.25.03.30.00.40.0

lyb:ExpectedYearOfExpirationInYearThree



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value2832040311
Percentage of TaxAttributes3.23.40.04.12.90.1

lyb:ExpectedYearOfExpirationInYearTwo



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value1613353114
Percentage of TaxAttributes1.81.44.53.20.10.3

lyb:ExpectedYearOfExpirationIndefinite



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value6405025326608131070
Percentage of TaxAttributes73.053.567.968.275.179.9

lyb:ExpectedYearOfExpirationThereafter



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value152289147200192184
Percentage of TaxAttributes17.330.818.820.717.713.7

us-gaap:AccountsPayableRelatedPartiesCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value421412514531577527627606631637597525544501445462570555653724645825820914826750755793736845801835907852867793
Percentage of AccountsPayableRelatedPartiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccountsPayableTradeCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value221725162687258426102560292824892379225821381792208320281884189516731627179720311986223926112776281628222486253124812440249621692638256224401968
Percentage of AccountsPayableTradeCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccrualForEnvironmentalLossContingencies



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-31
Value13013213012793909295102102999994951051101061069710096106105114116120123123123126125124132120121129113107
Percentage of AccrualForEnvironmentalLossContingencies100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccrualForTaxesOtherThanIncomeTaxesCurrent



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value202186199177217187207201211
Percentage of AccrualForTaxesOtherThanIncomeTaxesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedLiabilitiesCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value13871822174516071443153614891306150618121493125111391415135713741600181017841455148215541460131014771299152810471217115711779151049124215051705
Percentage of AccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedMarketingCostsCurrent



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value142163166147165187211221220
Percentage of AccruedMarketingCostsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AdditionalPaidInCapital



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value5950595470177006699670417033101901018610206102011019810195101911019510192101921020210203102321026110387103851037910385103821038010370103671035110328103231031910272102659837
Percentage of AdditionalPaidInCapital100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AdvancesOnInventoryPurchases



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value54573537542641806790
Percentage of AdvancesOnInventoryPurchases100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302011-12-31
Value1416151615161617171717171516171818242524252932333443414134292716
Percentage of AllowanceForDoubtfulAccountsReceivableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetRetirementObligation



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value6558587783889210299106106105105120123132
Percentage of AssetRetirementObligation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InvestmentType

us-gaap:AvailableForSaleSecurities

us-gaap:Bonds



Period End2020-03-312019-12-312019-09-302018-12-31
Value15716253567
Percentage of AvailableForSaleSecurities100.0100.0100.0100.0

us-gaap:InvestmentType

us-gaap:AvailableForSaleSecuritiesAmortizedCost

us-gaap:Bonds



Period End2020-03-312019-12-312019-09-302018-12-31
Value15916252567
Percentage of AvailableForSaleSecuritiesAmortizedCost100.0100.0100.0100.0

us-gaap:CashEquivalentsAtCarryingValue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value885389783081519189198513121035725311120351249434580575613815859431786141721273482
Percentage of CashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerLiability



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value151124143152195138
Percentage of ContractWithCustomerLiability100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrument

us-gaap:DebtInstrumentUnamortizedDiscount

lyb:GuaranteedNotes2Due2027



Period End2020-03-312019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value888889999101010
Percentage of DebtInstrumentUnamortizedDiscount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

lyb:GuaranteedNotesDue2022



Period End2020-03-312019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value1111222323333333
Percentage of DebtInstrumentUnamortizedDiscount12.512.512.512.525.022.222.233.322.230.030.030.00.00.00.00.0

lyb:GuaranteedNotesDue2023



Period End2020-03-312019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value4444556666677788888899991010
Percentage of DebtInstrumentUnamortizedDiscount50.050.050.050.062.555.666.766.766.760.060.070.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

lyb:GuaranteedNotesDue2043



Period End2020-03-312019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value2020202021212121212121222222222222222222222222222222
Percentage of DebtInstrumentUnamortizedDiscount250.0250.0250.0250.0262.5233.3233.3233.3233.3210.0210.0220.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

lyb:GuaranteedNotesDue2044



Period End2020-03-312019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value101111111111111111111111111111111111111212121212
Percentage of DebtInstrumentUnamortizedDiscount125.0137.5137.5137.5137.5122.2122.2122.2122.2110.0110.0110.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:InvestmentType

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss

us-gaap:Bonds



Period End2019-12-312019-09-302018-12-31
Value0.00.01000000.0
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss0.00.0100.0

us-gaap:DeferredIncomeTaxLiabilities



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value29162414207727742598259025892454
Percentage of DeferredIncomeTaxLiabilities100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredRevenueCurrent



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value10312861225773107
Percentage of DeferredRevenueCurrent100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsGross



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value102459060873180197089812231885
Percentage of DeferredTaxAssetsGross100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsNetNoncurrent



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value3831901922052713574420
Percentage of DeferredTaxAssetsNetNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsOther



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value13376977273934672136
Percentage of DeferredTaxAssetsOther100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value397334315404406468341548481
Percentage of DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value23614420823721622048197158
Percentage of DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesDeferredExpenseCapitalizedInventoryCosts



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value319285266379440528597632627
Percentage of DeferredTaxLiabilitiesDeferredExpenseCapitalizedInventoryCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value11615148140215264378387406
Percentage of DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesGrossNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-312013-12-312012-12-31
Value196120152018200819671975177416741688165524472370235323312387214921342127162316591314
Percentage of DeferredTaxLiabilitiesGrossNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value141147214304300276176158161
Percentage of DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesOther



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value4522264112458117
Percentage of DeferredTaxLiabilitiesOther100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value197318091523191015191464143812771299
Percentage of DeferredTaxLiabilitiesPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesUndistributedForeignEarnings



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value9596514751525240
Percentage of DeferredTaxLiabilitiesUndistributedForeignEarnings100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPensionPlanLiabilitiesCurrent

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-31
Value2827
Percentage of DefinedBenefitPensionPlanLiabilitiesCurrent100.0100.0

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPensionPlanLiabilitiesNoncurrent

country:US, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-31
Value332214252278
Percentage of DefinedBenefitPensionPlanLiabilitiesNoncurrent100.0100.0100.0100.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-31
Value949790
Percentage of DefinedBenefitPensionPlanLiabilitiesNoncurrent285.8369.2

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAccumulatedBenefitObligation

country:US, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-31
Value1899170818871816
Percentage of DefinedBenefitPlanAccumulatedBenefitObligation100.0100.0100.0100.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-31
Value18591528
Percentage of DefinedBenefitPlanAccumulatedBenefitObligation97.989.5

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax

country:US, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-31
Value-40-651925
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax100.0100.0100.0100.0

country:US, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-31
Value517376387378
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax-1292.5-578.52036.81512.0

us-gaap:ForeignPlan, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2019-12-312018-12-31
Value3215
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax-80.0-23.1

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-31
Value437262
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax-1092.5-403.1

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax

country:US, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-31
Value4065-19-25
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax100.0100.0100.0100.0

country:US, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-31
Value-516-374-385-376
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax-1290.0-575.42026.31504.0

us-gaap:ForeignPlan, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2019-12-312018-12-31
Value-32-15
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax-80.0-23.1

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-31
Value-405-251
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax-1012.5-386.2

us-gaap:RetirementPlanType

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-312015-12-31
Value-8-500-12-12
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax-20.0-76.9-0.048.00.0

us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-312015-12-31
Value921625-619-722-625
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax2302.5961.53257.92888.00.0

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax

country:US, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-31
Value1222
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax100.0100.0100.0100.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-31
Value3211
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax3200.0550.0

us-gaap:RetirementPlanType

us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-312015-12-31
Value33131016
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax3300.0650.0500.050.00.0

us-gaap:DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value223933131211731547
Percentage of DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

country:US, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-31
Value41083
Percentage of DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent18.225.624.223.1

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-31
Value1829
Percentage of DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent81.874.4

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate

country:US, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-31
Value0.03120.04470.03660.0407
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate100.0100.0100.0100.0

country:US, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-31
Value0.03160.04510.03730.042
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate101.3100.9101.9103.2

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Period End2019-12-312018-12-31
Value0.0120.023
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate38.551.5

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Period End2019-12-312018-12-31
Value0.01030.0207
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate33.046.3

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us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease

country:US, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-31
Value0.0450.0450.040.04
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease100.0100.0100.0100.0

country:US, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-31
Value0.04830.04830.040.04
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease107.3107.3100.0100.0

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Period End2019-12-312018-12-31
Value0.02590.0254
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease57.656.4

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanBenefitObligation

country:US, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-312015-12-31
Value251234280276285
Percentage of DefinedBenefitPlanBenefitObligation100.0100.0100.0100.0100.0

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Period End2019-12-312018-12-312017-12-312016-12-312015-12-31
Value19651752192418462066
Percentage of DefinedBenefitPlanBenefitObligation782.9748.7687.1668.8724.9

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Period End2019-12-312018-12-312017-12-31
Value795962
Percentage of DefinedBenefitPlanBenefitObligation31.525.222.1

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Period End2019-12-312018-12-312017-12-31
Value201716591511
Percentage of DefinedBenefitPlanBenefitObligation803.6709.0539.6

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us-gaap:DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear

country:US, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2019-12-31
Value-2
Percentage of DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear100.0

country:US, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312017-12-31
Value2921
Percentage of DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear-1450.00.0

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Period End2019-12-31
Value3
Percentage of DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear-150.0

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Period End2019-12-31
Value22
Percentage of DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear-1100.0

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country:US, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-31
Value818498
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter100.0100.0100.0

country:US, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-31
Value676677641
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter834.6806.0654.1

us-gaap:ForeignPlan, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2019-12-31
Value8
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter9.9

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-31
Value339
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter418.5

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us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths

country:US, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-31
Value171819
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths100.0100.0100.0

country:US, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-31
Value145140153
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths852.9777.8805.3

us-gaap:ForeignPlan, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2019-12-31
Value1000000.0
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths5.9

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-31
Value59
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths347.1

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive

country:US, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-31
Value171821
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive100.0100.0100.0

country:US, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-31
Value143141137
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive841.2783.3652.4

us-gaap:ForeignPlan, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2019-12-31
Value1000000.0
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive5.9

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-31
Value64
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive376.5

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour

country:US, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-31
Value171821
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour100.0100.0100.0

country:US, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-31
Value144141142
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour847.1783.3676.2

us-gaap:ForeignPlan, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2019-12-31
Value1000000.0
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour5.9

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-31
Value62
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour364.7

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree

country:US, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-31
Value171820
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree100.0100.0100.0

country:US, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-31
Value145141146
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree852.9783.3730.0

us-gaap:ForeignPlan, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2019-12-31
Value1000000.0
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree5.9

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-31
Value59
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree347.1

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo

country:US, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-31
Value171820
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo100.0100.0100.0

country:US, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-31
Value144140151
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo847.1777.8755.0

us-gaap:ForeignPlan, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2019-12-31
Value1000000.0
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo5.9

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-31
Value58
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo341.2

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear

country:US, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-31
Value464644
Percentage of DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear100.0100.0100.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-31
Value71
Percentage of DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear154.3

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanFundedStatusOfPlan

country:US, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-31
Value-251-234-280-276
Percentage of DefinedBenefitPlanFundedStatusOfPlan100.0100.0100.0100.0

country:US, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-31
Value-328-204-244-275
Percentage of DefinedBenefitPlanFundedStatusOfPlan130.787.287.199.6

us-gaap:ForeignPlan, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2019-12-312018-12-31
Value-79-59
Percentage of DefinedBenefitPlanFundedStatusOfPlan31.525.2

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-31
Value-959-788
Percentage of DefinedBenefitPlanFundedStatusOfPlan382.1336.8

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear

country:US, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-31
Value0.0610.0640.0670.07
Percentage of DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear100.0100.0100.0100.0

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Period End2019-12-312018-12-31
Value0.050.055
Percentage of DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear82.085.9

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsPlanAssets

country:US, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-31
Value158314041524
Percentage of DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsPlanAssets100.0100.0100.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-31
Value801639
Percentage of DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsPlanAssets50.645.5

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation

country:US, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-31
Value191516181776
Percentage of DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation100.0100.0100.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-31
Value17781456
Percentage of DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation92.890.0

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation

country:US, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-31
Value1765157817421676
Percentage of DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation100.0100.0100.0100.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-31
Value1079904
Percentage of DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation61.157.3

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets

country:US, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-31
Value1493140415241425
Percentage of DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets100.0100.0100.0100.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-31
Value243198
Percentage of DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets16.314.1

us-gaap:DerivativeAssetsCurrent



Period End2019-12-312018-12-312017-12-312016-12-312015-12-31
Value5480666120
Percentage of DerivativeAssetsCurrent100.0100.0100.0100.0100.0

us-gaap:DerivativeAssetsNoncurrent



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value25511826296326400
Percentage of DerivativeAssetsNoncurrent100.0100.0100.0100.0100.0100.00.0

us-gaap:DerivativeLiabilitiesCurrent



Period End2019-12-312018-12-31
Value18330
Percentage of DerivativeLiabilitiesCurrent100.0100.0

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us-gaap:DerivativeNotionalAmount

us-gaap:InterestRateContract, us-gaap:FairValueHedging



Period End2020-03-312019-12-312019-09-302018-12-31
Value2246214021363143
Percentage of DerivativeNotionalAmount100.0100.0100.0100.0

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us-gaap:InterestRateContract, us-gaap:FairValueHedging, us-gaap:SubsequentEvent



Period End2020-04-30
Value2000
Percentage of DerivativeNotionalAmount0.0

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us-gaap:CashFlowHedging, lyb:Commodityfeedstockprice



Period End2019-12-312019-09-302019-03-31
Value33631078
Percentage of DerivativeNotionalAmount15.714.50.0

us-gaap:CashFlowHedging, lyb:Commodityproductsaleprice



Period End2019-12-312019-09-302019-03-31
Value43740897
Percentage of DerivativeNotionalAmount20.419.10.0

us-gaap:CashFlowHedging, us-gaap:CommodityContract



Period End2019-12-312019-09-302018-12-31
Value00476
Percentage of DerivativeNotionalAmount0.00.015.1

us-gaap:CashFlowHedging, us-gaap:InterestRateSwap



Period End2020-03-312020-01-312019-12-312019-09-302019-02-282018-12-31
Value150010001500150010001500
Percentage of DerivativeNotionalAmount66.80.070.170.20.047.7

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us-gaap:NetInvestmentHedging, lyb:BasisSwapsAndForwardExchangeContracts, us-gaap:Derivative



Period End2020-03-312019-12-312019-09-302018-12-31
Value617617617650
Percentage of DerivativeNotionalAmount27.528.828.920.7

us-gaap:FinancialInstrument

lyb:InvestmentsInEquitySecurities



Period End2020-03-312019-12-312019-09-302018-12-31
Value43340322
Percentage of DerivativeNotionalAmount1.91.60.010.2

us-gaap:EquitySecurities



Period End2019-12-312018-12-31
Value34322
Percentage of DerivativeNotionalAmount1.610.2

us-gaap:DueFromRelatedPartiesCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value158121138182172148204190217180178182175126150173175154200194186222207271248202275236193184269221236196252265
Percentage of DueFromRelatedPartiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value385534442334415426409437351
Percentage of EmployeeRelatedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0

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us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions

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Period End2019-12-312018-12-312017-12-312016-12-31
Value23212726
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions100.0100.0100.0100.0

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Period End2019-12-312018-12-312017-12-312016-12-312012-12-31
Value2621151129
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions113.0100.055.642.30.0

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lyb:AlWahaPetrochemicalsLtd



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value0.250.250.250.20950.20950.20950.20950.20950.20950.2095
Percentage of EquityMethodInvestmentOwnershipPercentage100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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Period End2019-12-312019-11-302018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value0.00.40.40.40.40.40.40.40.40.40.4
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Period End2019-12-312018-12-312017-12-312016-12-312015-12-31
Value70827449738571237782
Percentage of EquityMethodInvestmentSummarizedFinancialInformationAssets100.0100.0100.0100.0100.0

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Period End2019-12-312018-12-312017-12-312016-12-312015-12-31
Value25912824284424362750
Percentage of EquityMethodInvestmentSummarizedFinancialInformationCurrentAssets100.0100.0100.0100.0100.0

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Period End2019-12-312018-12-312017-12-312016-12-312015-12-31
Value16401485160720082153
Percentage of EquityMethodInvestmentSummarizedFinancialInformationCurrentLiabilities100.0100.0100.0100.0100.0

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Period End2019-12-312018-12-312017-12-312016-12-312015-12-31
Value44914625454146875032
Percentage of EquityMethodInvestmentSummarizedFinancialInformationNoncurrentAssets100.0100.0100.0100.0100.0

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Period End2019-12-312018-12-312017-12-312016-12-312015-12-31
Value10601592141816681963
Percentage of EquityMethodInvestmentSummarizedFinancialInformationNoncurrentLiabilities100.0100.0100.0100.0100.0

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-31
Value15391602160915991650161116881599176716351644159516721575168116101734160816021612158116361690170216931629161516221607158315811521160515591594165415861587
Percentage of EquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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lyb:AdvancedPolymerSolutions



Period End2019-12-312018-12-312017-12-31
Value3160
Percentage of EquityMethodInvestments0.21.00.0

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Period End2019-12-312018-12-312017-12-312012-12-312011-12-31
Value717382118140
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lyb:OlefinsAndPolyolefinsAmericas



Period End2019-12-312018-12-312017-12-312012-12-312011-12-31
Value193196187162154
Percentage of EquityMethodInvestments12.012.211.410.29.9

lyb:OlefinsAndPolyolefinsEuropeAsiaInternational



Period End2019-12-312018-12-312017-12-312012-12-312011-12-31
Value13351326136613031265
Percentage of EquityMethodInvestments83.382.383.582.381.1

us-gaap:FinancialInstrument

us-gaap:FairValueNetAssetLiability

lyb:InvestmentsInEquitySecurities



Period End2020-03-312019-12-312019-03-312018-12-31
Value4334170325
Percentage of FairValueNetAssetLiability100.0100.0100.0100.0

us-gaap:EquitySecurities



Period End2019-12-312018-12-31
Value34325
Percentage of FairValueNetAssetLiability100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value11791013960841759726630486343
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsByMajorClass

lyb:EmissionAllowances



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value593531468421359330263195128
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization50.352.448.850.147.345.541.740.137.3

us-gaap:ComputerSoftwareIntangibleAsset



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value615966606983766450
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization5.25.86.97.19.111.412.113.214.6

us-gaap:CustomerContracts



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value359329356306285269251197146
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization30.432.537.136.437.537.139.840.542.6

us-gaap:CustomerRelationships



Period End2019-12-312018-12-312017-12-31
Value3280
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization2.70.80.0

us-gaap:InProcessResearchAndDevelopment



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value8275705446444030
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization7.07.47.36.46.16.16.36.2

us-gaap:TradeSecrets



Period End2019-12-312018-12-312017-12-31
Value1540
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization1.30.40.0

us-gaap:TrademarksAndTradeNames



Period End2019-12-312018-12-312017-12-31
Value3770
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization3.10.70.0

us-gaap:FiniteLivedIntangibleAssetsGross



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value204819781528139113991495153415241520
Percentage of FiniteLivedIntangibleAssetsGross100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsByMajorClass

lyb:EmissionAllowances



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value874807786697687730728728731
Percentage of FiniteLivedIntangibleAssetsGross42.740.851.450.149.148.847.547.848.1

us-gaap:ComputerSoftwareIntangibleAsset



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value746473708310410310299
Percentage of FiniteLivedIntangibleAssetsGross3.63.24.85.05.97.06.76.76.5

us-gaap:CustomerContracts



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value506508552518525542567563563
Percentage of FiniteLivedIntangibleAssetsGross24.725.736.137.237.536.337.036.937.0

us-gaap:CustomerRelationships



Period End2019-12-312018-12-312017-12-31
Value2993000
Percentage of FiniteLivedIntangibleAssetsGross14.615.20.0

us-gaap:InProcessResearchAndDevelopment



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value109111117106104119136131
Percentage of FiniteLivedIntangibleAssetsGross5.35.67.77.67.48.08.98.6

us-gaap:TradeSecrets



Period End2019-12-312018-12-312017-12-31
Value84840
Percentage of FiniteLivedIntangibleAssetsGross4.14.20.0

us-gaap:TrademarksAndTradeNames



Period End2019-12-312018-12-312017-12-31
Value1021040
Percentage of FiniteLivedIntangibleAssetsGross5.05.30.0

us-gaap:IncomeTaxesReceivable



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value175169298231512610385372
Percentage of IncomeTaxesReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestPayableCurrent



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value1611541511421321118351119
Percentage of InterestPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InventoryFinishedGoodsNetOfReserves



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value269130833008314030103066305627242849293227052666251625752725272927532668264927442800291932833390354432973309316832423194
Percentage of InventoryFinishedGoodsNetOfReserves100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InventoryRawMaterialsAndSuppliesNetOfReserves



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value115813751261135212711311135612081218114312841161115210801124112210871235132112681275129417271647176717291774176417561615
Percentage of InventoryRawMaterialsAndSuppliesNetOfReserves100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InventoryWorkInProcessNetOfReserves



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value124130177193215138184164190142188180207154166158138148168167192304349289278253299265272266
Percentage of InventoryWorkInProcessNetOfReserves100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrument

us-gaap:LettersOfCreditOutstandingAmount

us-gaap:RevolvingCreditFacility



Period End2020-03-31
Value0.0
Percentage of LettersOfCreditOutstandingAmount0.0

us-gaap:LifeInsuranceCorporateOrBankOwnedAmount



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value616256555453545554
Percentage of LifeInsuranceCorporateOrBankOwnedAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrument

us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity

us-gaap:RevolvingCreditFacility



Period End2020-03-31
Value2500
Percentage of LineOfCreditFacilityMaximumBorrowingCapacity100.0

us-gaap:ShortTermDebtType

us-gaap:CommercialPaper



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value2500250025002500250025002500250025002500250025002500250025002500200020002000200020002000
Percentage of LineOfCreditFacilityMaximumBorrowingCapacity100.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:DebtInstrument

us-gaap:LineOfCreditFacilityRemainingBorrowingCapacity

us-gaap:RevolvingCreditFacility



Period End2020-03-31
Value1206
Percentage of LineOfCreditFacilityRemainingBorrowingCapacity100.0

us-gaap:ShortTermDebtType

lyb:U.S.ReceivablesFacility



Period End2020-03-31
Value151
Percentage of LineOfCreditFacilityRemainingBorrowingCapacity12.5

us-gaap:LongTermDebtAndCapitalLeaseObligations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302011-12-31
Value1215911614962875867522849774717490853185498531849684198385846484858504767177427728774967576753676667665776577443064307430443053980
Percentage of LongTermDebtAndCapitalLeaseObligations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LongTermDebtAndCapitalLeaseObligationsCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302011-12-31
Value334455984974523222344433442331111104
Percentage of LongTermDebtAndCapitalLeaseObligationsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0

us-gaap:LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value12162116179632759075278502845584648536855185348498842183878467848985087675774577317753676167555777
Percentage of LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrument

lyb:GuaranteedNotes2Due2027



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value1103102310431021986964931943953984992992983
Percentage of LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities9.18.810.813.513.111.311.011.111.211.511.611.711.7

lyb:GuaranteedNotesDue2022



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value819841817852840855864870919894880849795785830828846
Percentage of LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities6.77.28.511.211.210.110.210.310.810.510.310.09.49.49.89.89.9

lyb:GuaranteedNotesDue2023



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value744744743743742742742741741740740740739739739738738737742742742741741740
Percentage of LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities6.16.47.79.89.98.78.88.88.78.78.78.78.88.88.78.78.79.69.69.69.611.011.012.8

lyb:GuaranteedNotesDue2031



Period End2020-03-312019-12-312019-09-30
Value538552536
Percentage of LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities4.44.85.6

lyb:GuaranteedNotesDue2043



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value723723723723723722722722722722722722721721721721721721728728728728728728
Percentage of LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities5.96.27.59.59.68.58.58.58.58.48.58.58.68.68.58.58.59.49.49.49.410.810.812.6

lyb:GuaranteedNotesDue2044



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value981980980980980980980980980979979979979979979979979979989989988988988
Percentage of LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities8.18.410.212.913.011.511.611.611.511.411.511.511.611.711.611.511.512.812.812.812.714.614.6

lyb:Guaranteednotesdue2026



Period End2020-03-312019-12-312019-09-30
Value542555539
Percentage of LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities4.54.85.6

lyb:OtherLongTermDebt



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value781187101192625757681094488911119
Percentage of LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities0.10.10.10.10.10.10.10.10.30.30.10.10.10.10.10.10.10.60.10.10.10.20.20.2

lyb:SeniorNotesDue2019



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value000098897997196396195995494719061936196119631943199419802002199319872000
Percentage of LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities0.00.00.00.011.611.611.511.311.211.211.211.222.722.923.123.125.325.725.625.829.529.434.6

lyb:SeniorNotesDue2021



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value1014998999996982975960962967981990992987988991990990989100010001000100010001000
Percentage of LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities8.38.610.413.113.011.511.411.411.311.511.611.711.711.811.711.711.612.912.912.912.914.814.817.3

lyb:SeniorNotesDue2024



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value995995994994994993993993992992992992991991991990990990100010001000100010001000
Percentage of LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities8.28.610.313.113.211.711.711.711.611.611.611.711.811.811.711.711.612.912.912.912.914.814.817.3

lyb:SeniorNotesDue2055



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value973973973973973973973973973973973973972972972972972972984984984
Percentage of LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities8.08.410.112.812.911.411.511.511.411.411.411.411.511.611.511.511.412.712.712.712.7

lyb:TermLoandue2022



Period End2020-03-312019-12-312019-09-302019-06-302019-03-31
Value19481950000
Percentage of LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities16.016.80.00.00.0

us-gaap:RevolvingCreditFacility



Period End2020-03-312019-12-31
Value5000
Percentage of LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities4.10.0

us-gaap:MarketableSecuritiesCurrent



Period End2019-12-312018-12-31
Value38919
Percentage of MarketableSecuritiesCurrent100.0100.0

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:MultiemployerPlansMinimumContribution

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-31
Value8
Percentage of MultiemployerPlansMinimumContribution100.0

us-gaap:FairValueByMeasurementFrequency, lyb:DerivativeAndNonderivativeInstrumentsClassification

us-gaap:NotesAndLoansReceivableGrossCurrent

us-gaap:FairValueMeasurementsNonrecurring, lyb:NonDerivative



Period End2019-12-312019-09-302019-06-302018-12-312018-03-312017-12-312017-03-312016-12-31
Value0518541544586570497369
Percentage of NotesAndLoansReceivableGrossCurrent0.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeaseLiability



Period End2019-12-312019-09-302019-06-302019-03-31
Value1489153115821555
Percentage of OperatingLeaseLiability100.0100.0100.0100.0

us-gaap:OperatingLeaseLiabilityCurrent



Period End2019-12-31
Value273
Percentage of OperatingLeaseLiabilityCurrent100.0

us-gaap:BalanceSheetLocation

us-gaap:AccruedLiabilities



Period End2019-12-31
Value273
Percentage of OperatingLeaseLiabilityCurrent100.0

us-gaap:OperatingLeaseLiabilityNoncurrent



Period End2020-03-312019-12-31
Value11921216
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0

us-gaap:OtherAssetsMiscellaneousCurrent



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value21097107119109113106101
Percentage of OtherAssetsMiscellaneousCurrent100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherAssetsMiscellaneousNoncurrent



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value529141435417323443
Percentage of OtherAssetsMiscellaneousNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities

country:US, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-31
Value17181818
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities100.0100.0100.0100.0

us-gaap:PrepaidInsurance



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value262525283342495146
Percentage of PrepaidInsurance100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestrictedCashAndCashEquivalentsAtCarryingValue



Period End2019-12-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value306911205761344471322023104265191495329211
Percentage of RestrictedCashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestrictedCashCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value373036291969
Percentage of RestrictedCashCurrent100.0100.0100.0100.0100.0100.0

us-gaap:SecuritiesForReverseRepurchaseAgreements



Period End2019-12-312018-12-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value05445705615424973692964623023874484974883500
Percentage of SecuritiesForReverseRepurchaseAgreements0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber

lyb:PerformanceUnitsEquityAward



Period End2019-12-312018-12-31
Value683000.0430000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber100.0100.0

lyb:PerformanceUnitsLiabilityAward



Period End2019-12-312018-12-31
Value0.0349000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber0.081.2

us-gaap:RestrictedStockUnitsRSU



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value000001112
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber89.8107.40.00.00.00.00.00.00.0

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

lyb:PerformanceUnitsEquityAward



Period End2019-12-312018-12-31
Value85.3291.33
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue100.0100.0

lyb:PerformanceUnitsLiabilityAward



Period End2019-12-312018-12-31
Value0.078.01
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue0.085.4

us-gaap:RestrictedStockUnitsRSU



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value93.3795.6985.1779.0365.824.323.023.5119.13
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue109.4104.80.00.00.00.00.00.00.0

us-gaap:ShortTermBorrowings



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value14934452438281223778852147677683815616115946216165943535735825143465655585811411411595474842484942
Percentage of ShortTermBorrowings100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByMeasurementFrequency, lyb:DerivativeAndNonderivativeInstrumentsClassification

us-gaap:FairValueMeasurementsNonrecurring, lyb:NonDerivative



Period End2020-03-312019-12-312019-09-302019-06-302018-12-312018-03-312017-12-312017-03-312016-12-31
Value711181165021287173645790
Percentage of ShortTermBorrowings47.640.767.775.78.094.894.19.315.2

us-gaap:ShortTermDebtType

lyb:OtherShortTermDebt



Period End2019-12-312018-12-312018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value253445322100111101100012394038
Percentage of ShortTermBorrowings0.40.63.95.25.91.30.50.30.30.20.00.00.20.20.31.80.01.71.70.00.00.012.683.083.379.2

lyb:PreciousMetalFinancings



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value2111811241281237170737364595957901178990267677777748
Percentage of ShortTermBorrowings14.140.75.14.65.28.032.796.194.894.115.510.59.315.218.814.415.27.413.313.215.022.382.8

lyb:U.S.ReceivablesFacility



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value5000500000000
Percentage of ShortTermBorrowings33.50.020.50.00.00.00.00.00.0

us-gaap:CommercialPaper



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value7782627866812518091400003174985505005005235003234935004312620
Percentage of ShortTermBorrowings52.158.932.224.210.691.465.40.00.00.083.288.890.084.280.584.984.291.586.085.983.975.70.0

us-gaap:ShortTermDebt



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-312012-06-302011-12-31
Value422335444848
Percentage of ShortTermBorrowings0.30.40.10.10.10.61.95.9100.0100.0

us-gaap:ShortTermDebtWeightedAverageInterestRate



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value0.0240.0330.0280.0340.0360.0310.030.0440.0410.0180.0140.0130.0110.0090.0070.0070.0070.0070.0040.0040.0030.0040.0060.0050.0070.0210.0110.0080.0010.0330.0350.0340.0290.039
Percentage of ShortTermDebtWeightedAverageInterestRate100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShortTermDebtType

lyb:U.S.ReceivablesFacility



Period End2020-03-312019-09-30
Value0.01620.0283
Percentage of ShortTermDebtWeightedAverageInterestRate67.5101.1

us-gaap:FairValueByMeasurementFrequency, lyb:DerivativeAndNonderivativeInstrumentsClassification

us-gaap:ShorttermDebtFairValue

us-gaap:FairValueMeasurementsNonrecurring, lyb:NonDerivative



Period End2020-03-312019-12-312019-09-302019-06-302018-12-312018-03-312017-12-312017-03-312016-12-31
Value731215166721427771756398
Percentage of ShorttermDebtFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value734380637906107431016010280110691060397298950732768686487607361076307636865747352795075068344987510788118261251411909120691168011179123611154311363106471408211596
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value-2313-1784-1683-1462-1418-1363-1309-1358-1301-1285-1359-1375-1438-1511-1492-1472-1397-1438-1381-1307-1566-1026-510439896-299-505-599-411-401-589-218-4277981
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-31.5-22.1-21.3-13.6-14.0-13.3-11.8-12.8-13.4-14.4-18.5-20.0-22.2-24.9-24.4-23.3-21.9-21.9-18.8-16.4-20.9-12.3-5.20.40.80.8-2.5-4.2-5.1-3.7-3.2-5.1-1.9-4.00.60.7

us-gaap:AdditionalPaidInCapital



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value5950595470177006699670417033101901018610206102011019810195101911019510192101921020210203102321026110387103851037910385103821038010370103671035110328103231031910272102659837
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest81.073.888.865.268.968.563.596.1104.7114.0139.2148.5157.2167.8166.9161.6160.1155.2138.8128.7136.7124.5105.296.287.883.087.285.988.892.683.689.490.896.572.984.8

us-gaap:CommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value191922222222223131313131313131313131313131313131313131313131313131313130
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.30.20.30.20.20.20.20.30.30.30.40.50.50.50.50.50.50.50.40.40.40.40.30.30.30.20.30.30.30.30.30.30.30.30.20.3

us-gaap:NoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value1919182222232511112252525242424242328303235353635373940495153545761
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.30.20.20.20.20.20.20.00.00.00.00.00.40.40.40.40.40.40.30.30.40.40.30.30.30.30.30.30.30.40.40.40.50.50.40.5

us-gaap:Parent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value732480447888107211013810257110441060297288949732668666462604860826283634465507328792774788314984310753117911247811874120321164111139123121149211310105931402511535
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest99.799.899.899.899.899.899.8100.0100.0100.0100.0100.099.699.699.699.699.699.699.799.799.699.699.799.799.799.799.799.799.799.699.699.699.599.599.699.5

us-gaap:RetainedEarnings



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value422744358430781872066763645317939166771574614207135061273612282118651126410535984193938569760767756330543046224004316025871946127424541838129884137781587
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest57.655.0106.672.870.965.858.3169.2171.4175.9193.9196.7196.3202.2194.3178.6165.4149.7127.8107.8101.381.264.150.339.132.026.521.416.711.419.915.911.47.926.813.7

us-gaap:TreasuryStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value-559-580-5898-2663-2668-2206-1155-16200-15865-15749-15754-15494-15062-14945-14517-13732-13017-12086-10918-9598-8855-7853-6393-5130-3345-2035-1398-451-104-106-100-111-120-124-1280
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-7.6-7.2-74.6-24.8-26.3-21.5-10.4-152.8-163.1-176.0-215.0-225.6-232.2-246.1-237.7-217.7-204.4-183.8-148.5-120.7-118.0-94.1-64.7-47.6-28.3-16.3-11.7-3.7-0.9-0.9-0.8-1.0-1.1-1.2-0.90.0

us-gaap:TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value1161161161161161161230
Percentage of TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:TemporaryEquitySharesOutstanding



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-08-21
Value115374.0115374.0115374.0115374.0115374.0115374.0121527.0124347.0
Percentage of TemporaryEquitySharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStockShares



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value666629292413188184183183180175174169159150138125110103917463442921733333441
Percentage of TreasuryStockShares100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:TreasuryStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value6666292924131881841831831801751741691591501381251101039174634429217333334411
Percentage of TreasuryStockShares100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0

us-gaap:UnamortizedDebtIssuanceExpense



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value11121519238910398102
Percentage of UnamortizedDebtIssuanceExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrument

lyb:GuaranteedNotes2Due2027



Period End2020-03-312019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value666777788888
Percentage of UnamortizedDebtIssuanceExpense0.054.50.00.058.30.00.00.053.30.00.00.0

lyb:GuaranteedNotesDue2022



Period End2020-03-312019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value2222233333443444
Percentage of UnamortizedDebtIssuanceExpense0.018.20.00.016.70.00.00.020.00.00.00.015.80.00.00.0

lyb:GuaranteedNotesDue2023



Period End2020-03-312019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value2233333344444444
Percentage of UnamortizedDebtIssuanceExpense0.018.20.00.025.00.00.00.026.70.00.00.021.10.00.00.0

lyb:GuaranteedNotesDue2044



Period End2020-03-312019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value999999991010101010101010
Percentage of UnamortizedDebtIssuanceExpense0.081.80.00.075.00.00.00.066.70.00.00.052.60.00.00.0

lyb:Guaranteednotesdue2026



Period End2020-03-312019-12-312019-09-30
Value344
Percentage of UnamortizedDebtIssuanceExpense0.036.40.0

lyb:SeniorNotesDue2021



Period End2020-03-312019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value334456677888991010
Percentage of UnamortizedDebtIssuanceExpense0.027.30.00.041.70.00.00.046.70.00.00.047.40.00.00.0

lyb:SeniorNotesDue2024



Period End2020-03-312019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value556677788889991010
Percentage of UnamortizedDebtIssuanceExpense0.045.50.00.058.30.00.00.053.30.00.00.047.40.00.00.0

lyb:SeniorNotesDue2055



Period End2020-03-312019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value11111111111111111111111212121212
Percentage of UnamortizedDebtIssuanceExpense0.0100.00.00.091.70.00.00.073.30.00.00.063.20.00.00.0

lyb:TermLoandue2022



Period End2020-03-31
Value2
Percentage of UnamortizedDebtIssuanceExpense0.0

us-gaap:UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued



Period End2019-12-312018-12-312018-09-302018-06-302017-12-312016-12-312015-12-312014-12-31
Value1516171463473126
Percentage of UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ValueAddedTaxReceivableCurrent



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value1782181849511376351202376
Percentage of ValueAddedTaxReceivableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0

Line plots across dimensions of each concept

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding us-gaap:StatementOperatingActivitiesSegment


us-gaap:WeightedAverageNumberOfSharesOutstandingBasic us-gaap:StatementOperatingActivitiesSegment


us-gaap:EarningsPerShareBasic us-gaap:StatementOperatingActivitiesSegment


us-gaap:EarningsPerShareDiluted us-gaap:StatementOperatingActivitiesSegment


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