OLN


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

Table of contents



us-gaap:CommonStockValue
us-gaap:StatementEquityComponents
us-gaap:SharesIssued

us-gaap:CommonStockSharesIssued

us-gaap:CommonStockSharesAuthorized

us-gaap:CommonStockSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:AllocatedShareBasedCompensationExpense

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:CostOfGoodsAndServicesSold

us-gaap:GainsLossesOnExtinguishmentOfDebt
us-gaap:DebtInstrument

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
us-gaap:StatementBusinessSegments

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxesPaidNet

us-gaap:InterestExpense

us-gaap:InterestPaidNet

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:OperatingIncomeLoss

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax

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

us-gaap:SellingGeneralAndAdministrativeExpense

us-gaap:Assets
us-gaap:StatementBusinessSegments

us-gaap:Liabilities

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:AssetsCurrent

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:InventoryNet

us-gaap:InventoryFinishedGoods

us-gaap:InventoryLIFOReserve

us-gaap:OtherAssetsCurrent

us-gaap:NoncurrentAssets
us-gaap:StatementGeographical

us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:Goodwill
us-gaap:StatementBusinessSegments

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:FiniteLivedIntangibleAssetsNet
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:OperatingLeaseRightOfUseAsset
us-gaap:BalanceSheetLocation

us-gaap:OtherAssetsNoncurrent

us-gaap:AccountsPayableCurrent

us-gaap:AccruedIncomeTaxesCurrent

us-gaap:AccruedLiabilitiesCurrent

us-gaap:LiabilitiesCurrent

us-gaap:LongTermDebtCurrent

us-gaap:OperatingLeaseLiabilityCurrent
us-gaap:BalanceSheetLocation

us-gaap:OtherAccruedLiabilitiesCurrent

us-gaap:LongTermDebtNoncurrent

us-gaap:DeferredIncomeTaxLiabilitiesNet

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

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent
us-gaap:BalanceSheetLocation

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:OperatingLeaseLiability

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:CommonStockValue

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:DepreciationDepletionAndAmortization

us-gaap:IncreaseDecreaseInInventories

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:ShareBasedCompensation

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:ProceedsFromIssuanceOfLongTermDebt

us-gaap:RepaymentsOfLongTermDebt

us-gaap:PaymentsOfDividends
us-gaap:ShareRepurchaseProgram, us-gaap:StatementClassOfStock
us-gaap:PaymentsForRepurchaseOfCommonStock
us-gaap:DebtInstrument
us-gaap:DebtInstrumentInterestRateStatedPercentage
us-gaap:DebtInstrument, us-gaap:SubsequentEventType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxAssetsNet

us-gaap:UnrecognizedTaxBenefits

us-gaap:DeferredTaxAssetsValuationAllowance

us-gaap:UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions

oln:AccountsReceivableAllowanceforCreditLossesWriteoffsNet

oln:AmortizationofSupplyContracts
us-gaap:DebtInstrument
oln:DebtRedemptionPremiumAmount
us-gaap:DebtInstrument, us-gaap:SubsequentEventType
us-gaap:DerivativeInstrumentRisk
oln:DeferredFairValueSwapLossRecognitionAcceleration

oln:DefinedContributionPlanEmployerContributionOfEligibleCompensation

oln:EffectiveTaxRateDiscreteItemsnet

oln:EffectiveTaxRateDiscreteItemsnetPercent

oln:Goodwillimpairmenttaxbenefit

oln:IncreaseDecreaseinCapitalExpendituresIncurredbutNotYetPaid

oln:LongtermOtherSupplyContractPayments

oln:OtherComprehensiveIncomeLossNetGainLossRecognizedBeforeTax

oln:OtherComprehensiveIncomeLossReclassificationAdjustmentBeforeTax
us-gaap:ConsolidationItems
oln:OtherCorporateAndUnallocatedCosts

oln:Paymentsreceivedfromcustomersonsoldaccounts

oln:PensionIncomeExpense
oln:ModelType
oln:PerformanceShareAwardNetIncomeFV
oln:ModelType
oln:PerformanceShareAwardTotalShareholderReturnFV
oln:ModelType
oln:PerformanceShareAwardsSharesGranted

oln:PriorYearTaxPositionIRSAuditResolution

oln:QuarterlyRequiredPrincipalPaymentPercentAfter2023

oln:QuarterlyRequiredPrincipalPaymentPercentIn2023

oln:QuarterlyRequiredPrincipalPaymentPercentThrough2022

oln:ShareBasedCompensationArrangementByShareBasedPaymentAwardMarkToMarketAdjustment

oln:ShareBasedCompensationArrangementByShareBasedPaymentAwardTotalExpense
oln:ModelType
oln:ShareBasedCompensationArrangementsExpectedVolatilityRateOfPeerCompanies
oln:ModelType
oln:ShareBasedCompensationAverageCorrelationCoefficientOfPeerCompanies

oln:TotalEnvironmentalExpenseIncome

oln:ValuationAllowanceRelease

oln:WriteOffOfDeferredDebtIssuanceCostsAndFairValueSwapLosses

oln:WriteOffOfUnamortizedDeferredDebtIssuanceCostsAndFairValueSwapLosses

us-gaap:AccretionExpense
us-gaap:DerivativeInstrumentRisk
us-gaap:CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths

us-gaap:CommonStockDividendsPerShareCashPaid
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanActuarialGainLoss
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanTaxStatus
us-gaap:DefinedBenefitPlanContributionsByEmployer
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanInterestCost
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanServiceCost

us-gaap:DefinedContributionPlanCostRecognized

us-gaap:DefinedContributionPlanEmployerDiscretionaryContributionAmount
us-gaap:Range
us-gaap:DefinedContributionPlanEmployerMatchingContributionPercentOfMatch
us-gaap:Range, us-gaap:SubsequentEventType
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:IncomeStatementLocation
us-gaap:DerivativeGainLossOnDerivativeNet
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation, us-gaap:IncomeStatementLocation
us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation

us-gaap:DividendsCommonStockCash
us-gaap:StatementEquityComponents

us-gaap:EffectOfExchangeRateOnCashAndCashEquivalents

us-gaap:EnvironmentalCostsRecognizedRecoveryCreditedToExpense

us-gaap:EnvironmentalRemediationExpense
us-gaap:ConsolidationItems

us-gaap:GainLossOnSaleOfAccountsReceivable

us-gaap:GoodwillForeignCurrencyTranslationGainLoss
us-gaap:StatementBusinessSegments

us-gaap:GoodwillImpairmentLoss
us-gaap:StatementBusinessSegments

us-gaap:IncreaseDecreaseInAccountsAndOtherReceivables

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities

us-gaap:IncreaseDecreaseInIncomeTaxesReceivable

us-gaap:IncreaseDecreaseInOtherNoncurrentLiabilities

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInPrepaidExpense

us-gaap:InvestmentIncomeInterest

us-gaap:NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossBeforeReclassificationAndTax

us-gaap:OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship
us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax

us-gaap:OtherComprehensiveIncomeLossTax

us-gaap:OtherOperatingIncomeExpenseNet

us-gaap:PaymentOfFinancingAndStockIssuanceCosts

us-gaap:PaymentsForRestructuring

us-gaap:PaymentsOfDebtExtinguishmentCosts

us-gaap:PensionContributions

us-gaap:PriorPeriodReclassificationAdjustment
us-gaap:DebtInstrument
us-gaap:ProceedsFromIssuanceOfDebt

us-gaap:ProceedsFromSaleAndCollectionOfReceivables

us-gaap:ProceedsFromStockOptionsExercised

us-gaap:ProvisionForLoanLeaseAndOtherLosses
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:IncomeStatementLocation
us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax
us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship
us-gaap:DebtInstrument
us-gaap:RepaymentsOfDebt
us-gaap:DebtInstrument, us-gaap:SubsequentEventType

us-gaap:RestructuringAndRelatedCostIncurredCost
us-gaap:RestructuringCostAndReserve

us-gaap:RestructuringCharges

us-gaap:RestructuringReserveSettledWithoutCash2

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate
oln:ModelType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
oln:ModelType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
oln:ModelType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod
oln:ModelType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
oln:ModelType

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
oln:ModelType

us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised
us-gaap:StatementEquityComponents
us-gaap:ShareRepurchaseProgram, us-gaap:StatementClassOfStock
us-gaap:StockRepurchasedAndRetiredDuringPeriodShares

us-gaap:UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions

us-gaap:UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment

dei:EntityCommonStockSharesOutstanding

oln:A2020SupplyContractPaymentAccretion
us-gaap:DebtInstrument
oln:A2021SeniorSecuredCreditFacility

oln:AccrualForEnvironmentalLossContingenciesUndiscountedDueBeyondYearTen

oln:AccrualForEnvironmentalLossContingenciesUndiscountedDueWithinSixToTenYears

oln:AccrualForEnvironmentalLossContingenciesUndiscountedDueWithinYearOneToFiveYears

oln:AccruedLiabilitiesUnassertedEnvironmentalClaims

oln:AccruedManufacturingCosts

oln:CapitalLossCarryForward

oln:CapitalLossCarryforwardAmountincludedinDeferredTaxAssets
us-gaap:PlanName
oln:CommittedSharesReservedUnderStockPurchasePlansForNonEmployeeDirectors

oln:CommodityForwardContractsAssetFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel

oln:CommodityForwardContractsLiabilityFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:Range
oln:ContributionToIndividualRetirementAccountPercentageOfEmployeesEligibleCompensation

oln:DebtCovenantSecuredDebt
us-gaap:DebtInstrument
us-gaap:DebtInstrument
oln:DebtCovenantSecuredDebtExclusion

oln:DebtRepaymentCash
us-gaap:DebtInstrument
us-gaap:SubsequentEventType
us-gaap:DebtInstrument
oln:DebtRepaymentDebtRefinance
us-gaap:DebtInstrument, us-gaap:SubsequentEventType

oln:DeferredTaxAssetsLeasingTransactions

oln:DeferredTaxAssetsTaxCreditCarryforwardsUSFederal

oln:DeferredTaxLiabilitiesPartnerships

oln:DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRateforInterestCost

oln:DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRateforServiceCost
us-gaap:DebtInstrument
oln:DelayedDrawTermLoanFacilityMaximumBorrowingCapacity

oln:DerivativeContracts

oln:EnvironmentalLiabilityNumberOfAffectedSites

oln:EnvironmentalLiabilityNumberOfSmallerSites

oln:EnvironmentalLiabilityNumberOfUsepaNplSites

oln:EnvironmentalLiabilityPercentageOfLiabilityLargerSitesMaximum

oln:EnvironmentalLiabilityPercentageOfLiabilityRelatedToLargerSites

oln:EnvironmentalLiabilityPercentageOfLiabilitySmallerSitesMaximum

oln:EnvironmentalPossibleAdditionalContingentEnvironmentalLiabilities

oln:FinanceLeaseAccumulatedDepreciation

oln:FinanceLeaseGrossValue

oln:InterestRatesSwapsClassifiedinDebt

oln:LesseeTotalLeaseAssets

oln:LesseeTotalLeaseLiabilities

oln:LongTermDebtMaturityAfterFiscalYear2025

oln:LongTermDebtMaturityFiscalYear2022

oln:LongTermDebtMaturityFiscalYear2023

oln:LongTermDebtMaturityFiscalYear2024

oln:LongTermDebtMaturityFiscalYear2025
us-gaap:RestructuringPlan, us-gaap:StatementBusinessSegments
oln:McIntoshRestructuringCapacityReduction
oln:LeaseArrangementCategory
oln:OperatingLeaseLeaseNotyetCommencedExpense
oln:OperatingLossCarryforwards
oln:OperatingLossCarryforwardsNotSubjecttoExpiration
oln:OperatingLossCarryforwards
oln:OperatingLossCarryforwardsSubjecttoExpiration

oln:OptionPriceExercisedMaximum

oln:OptionPriceExercisedMinimum

oln:OptionPriceOutstandingMaximumEndOfPeriod

oln:OptionPriceOutstandingMinimumEndOfPeriod

oln:Optionpricegrantedmaximum

oln:Optionpricegrantedminimum

oln:OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodAfterTax
us-gaap:RetirementPlanType
oln:OtherComprehensiveIncomeOtherPostretirementPlansNetUnamortizedGainLossArisingDuringPeriodAfterTax

oln:OutstandingLetterOfCredit

oln:ParOutstandingOfBondsUsedInYieldCurve
us-gaap:RetirementPlanType
oln:ParOutstandingValueNonCallableZeroCouponBondToDetermineHypotheticalYieldCurve

oln:ReceivablesFinancingAvailableBorrowingCapacity
us-gaap:DebtInstrument
us-gaap:DebtInstrument
oln:SeniorSecuredTermLoanFacility
oln:PerformanceSharesSettlementOption
oln:ShareBasedCompensationOutstandingPerformanceShares

oln:SubLimitForAllTypesOfStockAwardsIncludedInAvailableToBeIssuedStockOptions

oln:SupplyContractAmortizationExpenseNextTwelveMonths

oln:SupplyContractAmortizationExpenseYear2

oln:SupplyContractAmortizationExpenseYear3

oln:SupplyContractAmortizationExpenseYear4

oln:SupplyContractAmortizationExpenseYear5

oln:SupplyContracts

oln:TotalLeaseLiabilityPaymentsDue

oln:TotalLeaseLiabilityPaymentsDueNextTwelveMonths

oln:TotalLeaseLiabilityPaymentsDueYearFive

oln:TotalLeaseLiabilityPaymentsDueYearFour

oln:TotalLeaseLiabilityPaymentsDueYearThree

oln:TotalLeaseLiabilityPaymentsDueYearTwo

oln:TotalLeaseLiabilityPaymentsDueafterYearFive

oln:TotalLeaseLiabilityUndiscountedExcessAmount
oln:PerformanceSharesSettlementOption
oln:TotalVestedPerformanceShares

oln:TransferofFinancialAssetsFacilityMaximum
oln:PerformanceSharesSettlementOption
oln:WeightedAverageFairValueOutstandingPerformanceShares
oln:PerformanceSharesSettlementOption
oln:WeightedAverageFairValueTotalVestedPerformanceShares

us-gaap:AccountsAndOtherReceivablesNetCurrent

us-gaap:AccrualForEnvironmentalLossContingencies

us-gaap:AccrualForTaxesOtherThanIncomeTaxesCurrent

us-gaap:AccruedEmployeeBenefitsCurrent

us-gaap:AccruedEnvironmentalLossContingenciesCurrent

us-gaap:AccruedEnvironmentalLossContingenciesNoncurrent

us-gaap:AccruedProfessionalFeesCurrent

us-gaap:AccruedSalariesCurrent

us-gaap:AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax

us-gaap:AociLossCashFlowHedgeCumulativeGainLossAfterTax

us-gaap:AssetRetirementObligation

us-gaap:AssetRetirementObligationCurrent

us-gaap:AssetRetirementObligationsNoncurrent
us-gaap:DerivativeInstrumentRisk
us-gaap:CashFlowHedgesDerivativeInstrumentsAtFairValueNet

us-gaap:DebtInstrumentUnamortizedDiscountPremiumNet

us-gaap:DebtLongtermAndShorttermCombinedAmount

us-gaap:DeferredCompensationLiabilityCurrentAndNoncurrent

us-gaap:DeferredFinanceCostsNet

us-gaap:DeferredIncomeTaxAssetsNet

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredTaxAssetInterestCarryforward

us-gaap:DeferredTaxAssetsCapitalLossCarryforwards

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards
oln:OperatingLossCarryforwards
oln:OperatingLossCarryforwards
us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsNotSubjectToExpiration

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal
oln:OperatingLossCarryforwards
us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpiration

us-gaap:DeferredTaxAssetsTaxCreditCarryforwards

us-gaap:DeferredTaxAssetsTaxCreditCarryforwardsForeign

us-gaap:DeferredTaxAssetsTaxCreditCarryforwardsOther

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligations

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsReserves

us-gaap:DeferredTaxLiabilitiesDeferredExpenseCapitalizedInventoryCosts

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets

us-gaap:DeferredTaxLiabilitiesLeasingArrangements

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment

us-gaap:DeferredTaxLiabilitiesUndistributedForeignEarnings

us-gaap:DefinedBenefitPensionPlanLiabilitiesNoncurrent

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

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

us-gaap:DefinedBenefitPlanBenefitObligation
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:RetirementPlanTaxStatus
us-gaap:RetirementPlanType
us-gaap:RetirementPlanTaxStatus
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths
us-gaap:RetirementPlanType
us-gaap:RetirementPlanTaxStatus
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive
us-gaap:RetirementPlanType
us-gaap:RetirementPlanTaxStatus
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour
us-gaap:RetirementPlanType
us-gaap:RetirementPlanTaxStatus
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree
us-gaap:RetirementPlanType
us-gaap:RetirementPlanTaxStatus
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo
us-gaap:RetirementPlanType
us-gaap:Range, us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanTaxStatus
us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear

us-gaap:DefinedBenefitPlanFairValueOfPlanAssets
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanFundedStatusOfPlan
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:RetirementPlanTaxStatus
us-gaap:RetirementPlanType
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear

us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation

us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets

us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation
us-gaap:DefinedBenefitPlanByPlanAssetCategories
us-gaap:DefinedBenefitPlanPlanAssetsTargetAllocationPercentage
us-gaap:Range, us-gaap:DefinedBenefitPlanByPlanAssetCategories
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanUltimateHealthCareCostTrendRate1

us-gaap:DefinedBenefitPlanWeightedAverageAssetAllocations
us-gaap:DefinedBenefitPlanByPlanAssetCategories

us-gaap:DerecognizedAssetsSecuritizedOrAssetbackedFinancingArrangementAssetsAndAnyOtherFinancialAssetsManagedTogetherPrincipalAmountOutstanding

us-gaap:DerivativeAssets
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:DerivativeFairValueOfDerivativeAsset
us-gaap:BalanceSheetLocation
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation

us-gaap:DerivativeFairValueOfDerivativeLiability
us-gaap:BalanceSheetLocation
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation

us-gaap:DerivativeLiabilities
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:DerivativeNotionalAmount
us-gaap:DerivativeInstrumentRisk
us-gaap:AwardType
us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized

us-gaap:FinanceLeaseLiability
us-gaap:BalanceSheetLocation
us-gaap:FinanceLeaseLiabilityCurrent
us-gaap:BalanceSheetLocation
us-gaap:FinanceLeaseLiabilityNoncurrent

us-gaap:FinanceLeaseLiabilityPaymentsDue

us-gaap:FinanceLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFive

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFour

us-gaap:FinanceLeaseLiabilityPaymentsDueYearThree

us-gaap:FinanceLeaseLiabilityPaymentsDueYearTwo

us-gaap:FinanceLeaseLiabilityUndiscountedExcessAmount
us-gaap:BalanceSheetLocation
us-gaap:FinanceLeaseRightOfUseAsset

us-gaap:FinancingReceivableAllowanceForCreditLosses

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo

us-gaap:FiniteLivedIntangibleAssetsGross
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:ForeignCurrencyContractAssetFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:IncomeTaxesReceivable

us-gaap:InterestPayableCurrent

us-gaap:InventoryGross

us-gaap:InventoryRawMaterials

us-gaap:InventoryWorkInProcess

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths
us-gaap:DebtInstrument
us-gaap:LettersOfCreditOutstandingAmount

us-gaap:LineOfCreditFacilityRemainingBorrowingCapacity

us-gaap:LoansAndLeasesReceivableCollateralForSecuredBorrowings
us-gaap:DebtInstrument

us-gaap:LongTermDebtFairValue
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear

us-gaap:LossContingencyAccrualAtCarryingValue

us-gaap:NotesPayable
us-gaap:DebtInstrument

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent
oln:OperatingLossCarryforwards
us-gaap:OperatingLossCarryforwards

us-gaap:OtherAssetsMiscellaneousNoncurrent

us-gaap:OtherInventorySupplies

us-gaap:OtherReceivables

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

us-gaap:PercentageOfLIFOInventory

us-gaap:RecordedUnconditionalPurchaseObligation

us-gaap:RecordedUnconditionalPurchaseObligationDueAfterFifthYear

us-gaap:RecordedUnconditionalPurchaseObligationDueInFifthYear

us-gaap:RecordedUnconditionalPurchaseObligationDueInFourthYear

us-gaap:RecordedUnconditionalPurchaseObligationDueInSecondYear

us-gaap:RecordedUnconditionalPurchaseObligationDueInThirdYear

us-gaap:RecordedUnconditionalPurchaseObligationDueWithinOneYear
oln:ExpectedCumulativeRestructuringChargePeriod, us-gaap:RestructuringPlan, us-gaap:StatementBusinessSegments, us-gaap:SubsequentEventType
us-gaap:RestructuringAndRelatedCostExpectedCost1
us-gaap:RestructuringCostAndReserve, us-gaap:RestructuringPlan, us-gaap:StatementBusinessSegments, us-gaap:SubsequentEventType
us-gaap:RestructuringPlan, us-gaap:StatementBusinessSegments

us-gaap:RestructuringReserve
us-gaap:RestructuringCostAndReserve

us-gaap:RestructuringReserveCurrent
oln:PerformanceSharesSettlementOption
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
oln:PerformanceSharesSettlementOption
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
us-gaap:PlanName
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
us-gaap:PlanName
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue

us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions
us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRange

us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions
us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRange

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1
us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRange
us-gaap:SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1
us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRange
us-gaap:SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1

us-gaap:SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit

us-gaap:TransfersAccountedForAsSecuredBorrowingsAssociatedLiabilitiesCarryingAmount

us-gaap:UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued

us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate

Plots across concepts


IncomeStatement
Other Comprehensive Income Loss Net Of Tax
Expenses
Income Tax Expense Benefit
Balance Sheet
Cash And Cash Equivalents At Carrying Value
Assets
Derivative Assets
Current Assets
Other Assets Current
NonCurrent Assets
Deferred Income Tax Assets Net
PropertyPlantAndEquipmentNet
Property Plant And Equipment Net
Liabilities
Derivative Liabilities
Current Liabilities
Long Term Debt Current
Noncurrent Liabilities
Operating Lease Liability Noncurrent
Stockholders Equity
Accumulated Other Comprehensive Income Loss Net Of Tax
Per Share
Common Stock Dividends Per Share Cash Paid
CashFlow
Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInOperatingActivities
Share Based Compensation
NetCashProvidedByUsedInInvestingActivities
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInFinancingActivities
Net Cash Provided By Used In Financing Activities
Shares
Weighted Average Number Of Shares Outstanding Basic
OperatingLeaseLiability
Operating Lease Liability Current
LesseeOperatingLeaseLiabilityPaymentsDue
Lessee Operating Lease Liability Payments Due Year Four
FiniteLivedIntangibleAssets
Finite Lived Intangible Assets Net
InventoryNet
Inventory Finished Goods

Tables

  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:CommonStockValue ▇▇▇▇▇▇▇▇███████████████▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁160.5159.2158.0157.9157.9157.8157.7159.7164.3164.9165.3166.8167.0167.2167.1166.4166.3165.9165.4165.3165.2165.2165.177.677.577.577.478.278.679.079.479.680.080.380.280.280.080.180.180.280.279.779.679.679.278.9
 us-gaap:SharesIssued us-gaap:StatementEquityComponents us-gaap:CommonStockNANA158.0157.9157.9157.8157.7159.7164.3164.9165.3166.8167.0167.2167.1166.4166.3165.9165.4165.3165.2165.2165.177.677.577.577.478.278.679.079.479.680.080.380.280.280.080.180.180.28.02e-057.97e-0579.57936379.67.92e-057.890000000000001e-05
us-gaap:CommonStockSharesIssued ▇▇▇▇▇▇▇▇███████████████▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁160.5159.2158.0157.9157.9157.8157.7159.7164.3164.9165.3166.8167.0167.2167.1166.4166.3165.9165.4165.3165.2165.2165.177.677.577.577.478.278.679.079.479.680.080.380.280.280.080.180.180.280.279.779.57936379.679.278.9
us-gaap:CommonStockSharesAuthorized ███████████████████████▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁240.0240.0240.0240.0240.0240.0240.0240.0240.0240.0240.0240.0240.0240.0240.0240.0240.0240.0240.0240.0240.0240.0240.0120.0120.0120.0120.0120.0120.0120.0120.0120.0120.0120.0120.0120.0120.0120.0120.0120.0120.0120.0120.0120.0120.0120.0
us-gaap:CommonStockSharesOutstanding ▇▇▇▇▇▇▇▇███████████████▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁160.5159.2158.0157.9157.9157.8157.7159.7164.3164.9165.3166.8167.0167.2167.1166.4166.3165.9165.4165.3165.2165.2165.177.677.577.577.478.278.679.079.479.680.080.380.280.280.080.180.180.280.279.779.57936379.679.278.9
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding █▁163.8160.8NA157.9157.9157.8NA162.8164.6166.1NA168.6168.8169.2NA168.5166.1167.9NA166.5165.2165.1NA78.378.778.5NA79.580.080.5NA80.881.281.2NA81.080.780.9NA80.88.109999999999999e-058.04e-05NA80.27.98e-057.94e-05
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic █▁159.9158.6NA157.9157.9157.8NA161.9164.6165.0NA167.0167.1167.2NA166.3166.1165.6NA165.2165.2165.1NA77.677.577.4NA78.478.879.2NA79.880.280.2NA80.180.180.1NA80.28e-057.96e-05NA79.47.9e-057.879999999999999e-05
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount ▁█0.13.2NA10.310.310.5NA7.48.05.6NA2.42.52.5NA1.66.92.4NA1.96.97.0NA2.40.81.4NA0.60.60.6NA0.90.61.4NA1.01.80.8NA1.70.01.3NA1.36e-07NA
us-gaap:EarningsPerShareBasic ▇▇▅▁▅▅▅▆▅▆▆▆▆▅█▆▅▅▅▅▅▅▅▅▆▅▅▆▆▆▆▆▆▆▆▆▆▆▆▆▆▇▅▆▅▅2.231.54-0.21-4.67-0.76-0.51-0.490.27-0.120.250.321.170.350.132.930.32-0.040.080.110.11-0.01-0.23-0.390.080.550.170.160.330.470.370.310.870.540.50.430.360.590.480.230.590.531.680.030.40.210.18
us-gaap:EarningsPerShareDiluted ▇▇▅▁▅▅▅▆▅▆▆▆▆▅█▆▅▅▅▅▅▅▅▅▆▅▅▆▆▆▆▆▆▆▆▆▆▆▆▆▆▇▅▆▆▅2.171.51-0.21-4.67-0.76-0.51-0.490.27-0.120.250.321.160.350.122.890.31-0.040.080.10.11-0.01-0.23-0.390.080.540.170.160.330.470.370.310.860.540.50.430.350.590.480.230.580.521.660.020.40.210.18
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
 EBT Margin us-gaap:StatementBusinessSegments oln:ChlorAlkaliProductsandVinylsSegment▇▅▃▃▁▃▃▅▆▅▇█▇▆▆▅▅▄967.3867.0793.7755.1651.2759.9762.4876.3909.2872.2980.81051.11018.7936.1917.6881.2865.1836.9NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 EBT Margin us-gaap:StatementBusinessSegments oln:EpoxySegment█▅▃▂▁▂▂▃▃▃▃▅▃▄▃▂▂▄850.0662.6519.8476.1397.4477.2470.0511.6518.8524.0508.7647.3543.8603.3536.9489.9492.0567.6NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 EBT Margin us-gaap:StatementBusinessSegments oln:WinchesterSegment██▆▃▂▂▁▂▂▁▁▂▂▂▂▂▂▁404.0389.2340.6206.4192.6188.0154.7188.7164.9157.2145.5174.0165.9170.9165.4183.8169.4162.6NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
 TTM Greenblatt ROC _ _██▆▁▅▅▅▆▆▆▆▇▆▆▆▆▆▆▆▆▆▅▅▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▅395.0381.280.4-683.8-95.8-47.5-49.3103.428.595.2126.8314.5150.784.9119.0112.629.869.669.167.823.1-7.4-29.422.981.226.025.557.363.457.234.7103.773.774.465.953.570.369.236.777.970.738.6-5.2NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:AllocatedShareBasedCompensationExpense █▆█▅▅▄▃▅▁▆▅▅▅▇▅▄▅█▃▅▃▅▄▄▅▄▄▃▄▄▅▅▅▄▄▄▃▃7.24.77.83.44.32.00.94.2-1.35.64.34.14.46.54.23.04.27.31.43.81.64.42.42.83.92.52.41.82.12.93.73.43.52.72.42.21.91.9NANANANANANANANA
us-gaap:ComprehensiveIncomeNetOfTax ▇▇▅▁▅▅▄▅▅▅▅▆▅▅█▆▅▅▅▅▅▅▄▅▅▅▅▅▅▅▅▆▅▅▅▅▅▅▅▅▅▆▅▅▅▅385.2249.85.3-691.1-72.9-97.7-207.931.9-23.535.8-26.4197.038.238.6474.768.110.821.3-25.830.1-10.1-15.6-122.07.047.716.5-73.926.144.431.122.779.142.340.7-64.142.048.146.5-4.936.243.3134.7-13.543.69.511.6
us-gaap:CostOfGoodsAndServicesSold █▇▇▆▆▆▆▆▇▆▆▇▇▇▆▆▆▆▆▆▆▅▅▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▂▂▁▁▁▁▁1712.21423.81457.31307.41235.71374.21270.61357.61463.71347.31391.01441.71460.71528.71396.21345.61404.11393.71227.01284.41236.91175.41148.1460.0445.5433.2421.9492.3463.6475.4469.7528.5531.1504.4487.9475.8391.4392.9368.3432.7413.7359.2323.2366.5347.7312.5
us-gaap:GainsLossesOnExtinguishmentOfDebt -15.4NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:GainsLossesOnExtinguishmentOfDebt us-gaap:DebtInstrument oln:A1000SeniorNotesDue2025-11.3NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:GainsLossesOnExtinguishmentOfDebt us-gaap:DebtInstrument oln:A500SeniorNotesDue2030-0.6NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:GainsLossesOnExtinguishmentOfDebt us-gaap:DebtInstrument oln:A5625SeniorNotesDue2029-2.9NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:GainsLossesOnExtinguishmentOfDebt us-gaap:DebtInstrument oln:SeniorSecuredTermLoans-0.6NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest ██▆▁▅▅▅▆▆▆▆█▆▆▆▆▆▆▆▆▆▅▅▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▇▆▆▆337.3306.1-0.6-753.4-160.1-105.9-108.943.8-24.953.174.1261.474.327.560.760.4-21.817.923.521.3-23.6-55.4-85.99.363.719.619.440.354.848.230.593.062.763.854.746.763.360.526.569.463.7219.8-2.338.825.2NA
us-gaap:IncomeTaxExpenseBenefit ▇█▇▇▆▆▆▇▇▇▇█▇▇▁▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇█▇▇▇▇-18.562.532.4-16.6-40.0-25.9-31.7-0.4-4.911.420.866.315.76.6-428.67.7-15.94.56.03.8-22.6-17.5-23.23.421.46.56.614.218.218.75.823.319.023.320.118.015.721.87.822.221.686.1-4.37.08.31.1
us-gaap:IncomeTaxesPaidNet █▅▄▄▄▅▄▅▆▅▅▅▅▅▅▅▅▄▄▅▅▅▄▅▅▅▅▅▅▅▅▅▅▅▄▅▅▅▁▅▅▅▄▄▄▄77.94.7-7.1-5.60.62.5-11.33.326.517.821.08.49.014.56.86.05.10.1-18.95.17.63.6-0.11.62.21.66.37.621.313.818.213.022.77.4-0.17.813.67.1-75.919.114.01.3-0.3-6.10.8-0.3
us-gaap:InterestExpense ▆██▇▇▆▆▆▆▆▆▆▆▆▆▅▅▅▅▅▅▅▆▂▂▁▁▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁65.984.585.674.669.463.164.063.957.957.459.259.261.163.759.453.152.552.448.347.547.648.557.314.418.27.16.817.79.69.79.99.99.79.18.16.05.86.57.97.97.47.25.96.46.26.9
us-gaap:InterestPaidNet ▆██▆▆▆▆▄▆▅▆▅▆▅▆▅▆▄▆▄▇▄▄▃▃▃▃▄▃▄▃▄▃▄▃▃▃▃▁▃▃▃▃▃▃▃55.398.2107.157.063.858.563.127.055.952.354.948.564.041.462.245.463.629.773.924.884.817.313.56.75.56.66.012.85.312.78.112.83.712.63.87.43.57.5-44.47.44.77.54.67.54.97.6
us-gaap:NetIncomeLoss ▇▇▅▁▅▅▅▅▅▅▆▆▆▅█▆▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▆▅▅▅▅▅▅▅▅▅▆▅▅▅▅355.8243.6-33.0-736.8-120.1-80.0-77.244.2-20.041.753.3195.158.620.9489.352.7-5.913.417.517.5-1.0-37.9-62.75.942.313.112.826.137.329.524.769.743.740.534.628.747.638.718.747.242.1133.72.031.816.914.1
us-gaap:OperatingIncomeLoss ██▆▁▅▅▅▆▆▆▆▇▆▆▆▆▆▆▆▆▆▅▅▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▅▆▆▆395.0381.280.4-683.8-95.8-47.5-49.3103.428.595.2126.8314.5150.784.9119.0112.629.869.669.167.823.1-7.4-29.422.981.226.025.557.363.457.234.7103.773.774.465.953.570.369.236.777.970.738.6-5.233.322.119.7
us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax █▁16.37.0NA19.830.0-17.9NA-2.5-12.1-3.3NA-3.6-2.4-0.1NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax ▆▃▇█▇▄▇▃▆▄▄▅▁▇▅▇█▆▂▆▃█▄▅▅▅▅▅▅▅2.4-11.411.617.08.2-9.011.6-15.73.3-8.3-6.5-2.0-26.112.40.09.815.96.0-21.34.6-10.815.5-7.0-1.70.3-1.4-1.3-1.50.30.7NANANANANANANANANANANANANANANANA
us-gaap:OtherComprehensiveIncomeLossNetOfTax ▇▆███▅▁▆▆▆▃▆▅▇▆▇▇▆▄▇▆▇▄▆▆▆▃▆▆▆29.46.238.345.747.2-17.7-130.7-12.3-3.5-5.9-79.71.9-20.417.7-14.615.416.77.9-43.312.6-9.122.3-59.31.15.43.4-86.70.07.11.6NANANANANANANANANANANANANANANANA
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax █▇▆▅▄▅▅▆▆▅▆▇▆▆▆▅▅▆▅▅▅▅▄▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▁▂▂▁▁▁▁▁2221.31918.81654.11437.61241.21425.11387.11576.61592.91553.41635.01872.41728.41710.31619.91554.91526.51567.11385.71452.71364.01348.21267.4533.6535.4518.0499.8593.6570.4577.4562.1670.7652.2630.0587.6581.2508.7507.2445.8550.2529.1436.0385.4432.8405.7362.0
us-gaap:SellingGeneralAndAdministrativeExpense ▇▇██▇▇▇█▇▇███▇▇▆▅▆▅▅▅▆▄▁▂▂▂▂▂▂▃▁▂▂▁▂▂▂▂▂▂▂▁▁▁▁100.6106.9112.9112.799.796.7102.1110.897.0107.0109.0110.8110.3100.596.186.480.088.273.882.079.388.163.835.839.947.041.942.842.043.755.736.548.749.137.442.445.143.739.639.842.539.533.133.335.932.1
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:Assets ▇▇▇▇████████████▇▇▇▇███▂▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▂▂▁▁▁▁▁8657.28453.28270.98266.68978.19184.49187.89232.69235.39169.98997.49227.39137.89160.29218.39366.58794.38813.28762.68792.88909.39116.99321.82708.82701.12681.32698.12753.02790.72763.82802.82843.02786.52736.22777.72817.12485.92439.92449.62492.02464.52391.32048.71962.81933.71931.3
us-gaap:Liabilities ▇██████▇▇▇▇▇▇▇▇█▇▇▇▇▇██▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁6582.56756.66820.16797.56789.26895.36770.36567.96464.56332.36165.26304.46374.76397.16464.67068.06535.76541.66489.66462.16578.36744.16903.01662.71648.61663.11684.81631.81666.91656.21701.71745.71741.51711.61779.31740.51438.21423.61463.81484.81476.71441.41218.41105.41110.01109.3
us-gaap:LiabilitiesAndStockholdersEquity ▇▇▇▇████████████▇▇▇▇███▂▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▂▂▁▁▁▁▁8657.28453.28270.98266.68978.19184.49187.89232.69235.39169.98997.49227.39137.89160.29218.39366.58794.38813.28762.68792.88909.39116.99321.82708.82701.12681.32698.12753.02790.72763.82802.82843.02786.52736.22777.72817.12485.92439.92449.62492.02464.52391.32048.71962.81933.71931.3
us-gaap:StockholdersEquity ▅▄▃▃▆▆▆▇▇███▇▇▇▆▆▆▆▆▆▆▆▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁2074.71696.61450.81469.12188.92289.12417.52664.72770.82837.62832.22922.92763.12763.12753.72298.52258.62271.62273.02330.72331.02372.82418.81046.11052.51018.21013.31121.21123.81107.61101.11097.31045.01024.6998.41076.61047.71016.3985.81007.2987.8949.9830.3857.4823.7822.0
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:AssetsCurrent █▇▆▅▅▆▆▆▆▆▆▇▆▆▆▆▆▅▅▅▅▆▇▂▂▁▁▂▂▁▂▂▁▁▁▁▁▁▁▂▂▁▂▂▂▂2218.12013.01717.11672.51616.81739.31714.01769.61726.21684.51707.41938.31763.21699.01699.21717.91691.01669.71546.21553.21562.91877.41933.4868.4844.3803.2816.1857.0879.0828.7839.9877.1793.9722.4749.1753.4749.3751.9780.3838.8842.3797.4882.8852.8840.1856.2
us-gaap:CashAndCashEquivalentsAtCarryingValue ▅▄▃▅▄▃▄▃▂▂▃▃▂▂▄▄▃▃▃▂▁▅▇▄▄▃▄▅▄▄▅▅▂▁▃▂▃▄▅▅▅▅█▇▇▇272.8259.9189.7282.7237.9194.5220.9177.4126.9105.7178.8156.7144.2109.1218.4255.9184.5168.5184.5127.066.6315.6392.0254.0232.4196.8256.8263.6245.6242.9307.8283.8141.693.0165.2103.1198.6220.6304.8318.3276.5280.4458.6393.4388.4411.0
us-gaap:InventoryNet █▇▇▆▇▇███████▇▇▇▇▇▇▇▇▇▇▂▂▂▂▂▂▁▁▁▂▁▁▂▂▁▁▁▁▁▁▁▁▁736.5679.5674.7608.4619.1667.5695.7700.7698.9717.5711.4724.4716.3675.6682.6689.5666.2656.3630.4617.0636.2679.5685.2232.5221.6216.1210.1198.8220.9187.6186.5183.5204.8193.3195.1213.7197.6186.0176.6166.3182.0179.7155.6157.3163.0156.4
us-gaap:InventoryFinishedGoods ▇▆▆▆▆▇▇█▇████▇▇▇▇▇▇▆▇▇▇▂▂▂▂▁▂▁▁▁▂▂▂▂▁▁▁▁▁▁▁▁▁420.9366.2359.6363.8392.7419.5449.5474.9469.8498.7488.5493.6500.4440.8462.6470.7445.8448.3435.1405.9423.4452.2445.3153.4143.0141.1141.5130.5142.8116.2115.9117.3141.6132.6141.0149.3120.8111.8111.7104.9116.4119.3104.4103.3104.9NA
us-gaap:InventoryLIFOReserve █▄▃▃▂▂▃▄▄▆▃▄▄▃▃▃▃▁▃▂▁▂▂▅▅▅▅▆▆▇▆▆▇▇▇▇▆▆▇▆▅▆▄▅▄89.658.048.245.743.842.649.557.659.270.649.858.960.446.049.247.547.936.046.140.833.042.543.963.566.066.065.776.376.179.472.873.879.280.878.077.974.775.277.773.666.574.160.862.958.4NA
us-gaap:OtherAssetsCurrent █▇▅▃▃▄▂▂▂▃▃▃▄▄▄▂▃▃▂▁▂▃▃▁▁▁▁▁▁▁▁▁▁▁▂▂▁▁▁▁▂▂▂▂▁▂112.796.566.744.542.054.523.124.128.846.735.035.247.761.248.127.137.244.930.816.123.832.839.912.416.117.410.311.113.815.313.210.313.315.620.320.011.414.110.211.125.728.829.617.610.822.3
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NoncurrentAssets NANA3171.0NANANA3323.8NANANA3482.1NANANA3575.8NANANA3704.9NANANA3953.4NANANA931.0NANANANANANANANANANANANANANANANANANANA
 us-gaap:NoncurrentAssets us-gaap:StatementGeographical country:USNANA2860.1NANANA3017.4NANANA3147.6NANANA3211.9NANANA3352.2NANANA3561.7NANANA889.6NANANANANANANANANANANANANANANANANANANA
 us-gaap:NoncurrentAssets us-gaap:StatementGeographical oln:ForeignNANA310.9NANANA306.4NANANA334.5NANANA363.9NANANA352.7NANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:PropertyPlantAndEquipmentGross NANA6890.8NANANA6591.9NANANA6263.1NANANA5908.9NANANA5596.5NANANA5452.8NANANA2261.7NANANA2246.9NANANA2198.3NANANA2029.4NANANA1743.1NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:BuildingNANA409.4NANANA392.4NANANA387.6NANANA382.4NANANA375.0NANANA380.4NANANA212.1NANANA205.0NANANA204.3NANANA183.9NANANA163.5NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:ConstructionInProgressNANA245.2NANANA346.1NANANA341.4NANANA212.5NANANA171.0NANANA123.5NANANA43.6NANANA47.8NANANA96.1NANANA153.3NANANA57.0NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:LandAndLandImprovementsNANA282.7NANANA277.5NANANA276.9NANANA281.7NANANA281.2NANANA280.4NANANA157.3NANANA156.2NANANA155.9NANANA149.4NANANA141.5NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:LeaseholdImprovementsNANA8.3NANANA9.9NANANA5.2NANANA3.9NANANA3.4NANANA2.7NANANA2.6NANANA2.5NANANA2.5NANANA2.5NANANA2.1NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:MachineryAndEquipmentNANA5945.2NANANA5566.0NANANA5252.0NANANA5028.4NANANA4765.9NANANA4665.8NANANA1846.1NANANA1835.4NANANA1739.5NANANA1540.3NANANA1379.0NANANA
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment ███▇▇▇▆▆▆▆▅▅▅▄▄▄▄▃▃▃▃▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁3893.83804.43719.83602.43484.93373.83268.13112.43000.02892.42781.02651.22537.02444.22333.12222.82117.62001.11891.61788.61681.21587.91499.41411.91385.61357.91330.71324.61316.41287.31259.11236.81220.21191.21164.01206.01192.11168.81144.01122.11098.21089.81068.11048.21027.51017.5
us-gaap:PropertyPlantAndEquipmentNet ▆▆▆▆▆▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇███▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁3005.63073.43171.03179.83234.93282.73323.83367.03410.53433.53482.13456.73501.43539.43575.83579.23627.43659.23704.93713.93793.33859.03953.4913.7917.6919.9931.0936.4951.3968.6987.8991.71013.51025.41034.31018.2961.4914.7885.4821.3780.6763.2675.0683.8683.9688.5
us-gaap:Goodwill ▅▅▅▅███████████████████▃▃▃▃▃▃▃▃▃▃▃▃▃▂▂▂▂▂▂▁▁▁▁1420.21420.11420.21420.12119.72119.62119.72119.12119.62119.52119.62119.62119.72120.32120.02119.82119.52119.02118.02119.42186.32146.12174.1747.1747.1747.1747.1747.1747.1747.1747.1747.1747.1747.1747.1752.3627.4627.4627.4627.4627.4628.2300.3300.3300.3300.3
us-gaap:IntangibleAssetsNetExcludingGoodwill ▅▅▅▅▅▅▆▆▆▆▆▆▇▇▇▇▇▇▇████▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁365.7381.0399.4404.9416.9431.4448.1461.9480.6494.2511.6528.3544.3565.1578.5592.9605.6615.4629.6653.8671.2663.2677.5112.5116.2119.8123.5127.2130.8134.4138.1141.7145.4149.1152.7156.418.218.719.219.6NANANANANANA
us-gaap:FiniteLivedIntangibleAssetsNet ▄▄▅▅▅▅▅▅▆▆▆▆▆▇▇▇▇▇▇████▁▁▁▁365.7381.0399.4404.9416.9431.4448.1461.9480.6494.2511.6528.3544.3565.1578.5592.9605.6615.4629.6653.8671.2663.2677.5112.5116.2119.8123.5NANANANANANANA152.7NANANA19.2NANANA15.2NANANA
us-gaap:OperatingLeaseRightOfUseAsset ███████▇▆▆▁▁▁▁370.7383.6360.7376.0371.8366.5377.8314.6295.8275.10.00.00.00.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherAssetsNoncurrent █████████▇██████▄▄▅▄▄▃▄▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁1165.91171.01191.31177.01179.71205.31169.11170.11174.51131.41150.41159.61169.51197.01208.41215.6625.6637.2644.4640.3588.6463.8487.5167.7179.0198.2191.4197.7200.1205.2213.1210.0214.5219.6224.1223.681.983.185.686.879.576.572.392.284.871.8
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:AccountsPayableCurrent █▇▇▆▅▇▆▆▇▆▆▇▇▇▇▆▆▆▆▅▅▅▆▂▁▁▁▂▂▂▁▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁806.3716.6729.2614.7520.8668.1651.9647.7669.2637.0636.5709.4681.4698.2669.8613.5656.1637.3570.8509.7536.4478.1608.2158.7148.6147.8146.8165.5186.8164.6148.7170.4189.7166.5174.3189.4130.0125.9149.7129.6142.9118.5115.5107.9111.7121.1
us-gaap:AccruedIncomeTaxesCurrent █▄▃▄▃▂▅▃▃▄▆▅▄▄▃▃▂▃▂▄▃▄▂▃▃▁▁▁▁▁▁▁▂▂▃▁▁▁▁35.113.410.714.27.77.419.89.89.513.022.622.115.516.09.49.67.18.17.513.38.214.14.910.411.11.10.20.50.40.51.70.83.56.17.60.00.00.50.0NANANANANANANA
us-gaap:AccruedLiabilitiesCurrent ▄▃▃▃▂█▃▃▂▂▃▃▂▂▂▂▂▂▂▂▂▃▃▂▁▁▁▁▁▁▂▂▁▁▁▂▂▁▂▂▁▁▁▁▁▁426.3367.4358.0335.8318.7811.8329.1347.4298.9294.4333.3341.3284.4256.1274.4294.5261.5258.2263.8291.5293.6352.3328.1272.8205.4205.1214.3209.2194.5198.2244.5242.4231.6210.4228.5249.2234.8219.6237.2237.6222.8220.0197.7189.5189.2192.4
us-gaap:LiabilitiesCurrent ▇▆▆▅▄█▅▅▅▆▆▅▅▅▅▅▅▅▄▄▄▅▆▃▂▁▁▂▂▁▂▂▂▂▂▂▁▁▂▂▂▂▂▁▁▁1345.71218.21198.91042.1926.31565.91082.21077.21050.11139.91118.31073.7982.2971.0954.3999.31006.4985.4922.6894.8918.51049.61147.7585.2509.0370.4377.7391.6394.3375.9407.5426.1437.0395.2434.0462.2388.4369.6399.1455.0454.2427.8391.0299.2300.9313.5
us-gaap:LongTermDebtCurrent ▁▂▂▁▁▁▁▁▁▅▅▁▁▁▁▄▄▄▄▄▄██▆▆▂▂▂▁▁▁▁▁▁▂▂▂▂▁▄▄▄▄▁1.142.126.31.21.82.02.11.11.1126.1125.90.90.90.70.781.781.781.880.580.380.3205.1206.5143.3143.916.416.416.412.612.612.612.512.212.223.623.623.623.612.287.888.589.377.81.8NANA
us-gaap:OperatingLeaseLiabilityCurrent ███████▇▇▇▁▁▁▁76.978.774.776.277.376.679.371.271.469.40.00.00.00.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherAccruedLiabilitiesCurrent NANA55.2NANANA42.4NANANA46.7NANANA36.1NANANA42.4NANANA66.8NANANA76.9NANANA76.5NANANA63.3NANANA64.8NANANA53.3NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:LongTermDebtNoncurrent ▇▇███▇▇▇▆▆▆▇▇▇▇▇▇▇▇▇▇▇▇▁▁▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁3381.83706.03837.53959.54073.93489.53338.73339.03232.63067.23104.43336.43512.63534.73611.33663.53518.93530.83537.13597.53615.53627.93675.2526.9528.2656.9658.7672.7676.6677.5678.4690.5689.1689.3690.1703.1503.9512.0524.2501.8494.3491.9418.2385.1402.3397.1
us-gaap:DeferredIncomeTaxLiabilitiesNet ▇▅▃▁▁▃▃▆▆▇▆█▆▅▆521.9492.3443.2410.9414.5449.9454.5515.5506.4525.9518.9548.6512.7498.4511.2NANANA1032.5NANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent NANA733.3NANANA797.7NANANA674.3NANANA635.9NANANA638.1NANANA648.9NANANA182.0NANANA105.4NANANA154.2NANANA57.6NANANA57.3NANANA
 us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent us-gaap:RetirementPlanSponsorLocation,us-gaap:RetirementPlanType country:US,us-gaap:OtherPostretirementBenefitPlansDefinedBenefitNANA41.1NANANA38.5NANANA33.9NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent us-gaap:RetirementPlanSponsorLocation,us-gaap:RetirementPlanType country:US,us-gaap:PensionPlansDefinedBenefitNANA374.4NANANA497.0NANANA439.3NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent us-gaap:RetirementPlanSponsorLocation,us-gaap:RetirementPlanType us-gaap:ForeignPlan,us-gaap:OtherPostretirementBenefitPlansDefinedBenefitNANA11.6NANANA10.5NANANA9.2NANANA9.9NANANA8.3NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent us-gaap:RetirementPlanSponsorLocation,us-gaap:RetirementPlanType us-gaap:ForeignPlan,us-gaap:PensionPlansDefinedBenefitNANA358.9NANANA300.7NANANA235.0NANANA228.9NANANA184.3NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent us-gaap:RetirementPlanType us-gaap:OtherPostretirementBenefitPlansDefinedBenefitNANA52.7NANANA49.0NANANA43.1NANANA46.5NANANA47.1NANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherLiabilitiesNoncurrent ▂▁▁▁▁▁███▇▇▇██▇▇▂▂▂▁▂▁▁▁▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁350.1329.8315.6313.5307.3317.0793.8765.6792.5733.1749.3756.1764.5764.3751.9731.0347.2364.9359.3335.5348.3340.4336.0335.4359.4361.3359.3363.8377.2377.5382.8371.6359.7363.7380.5355.2359.6366.4381.8359.3357.7355.6327.1330.9325.8316.4
us-gaap:OperatingLeaseLiabilityNoncurrent ███████▇▆▆▁▁▁▁299.8310.5291.6305.0299.2295.0303.4248.2229.3206.00.00.00.00.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo NANA66.9NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree NANA52.6NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour NANA41.5NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive NANA33.7NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive NANA148.4NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:StockholdersEquity ▅▄▃▃▆▆▆▇▇███▇▇▇▆▆▆▆▆▆▆▆▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁2074.71696.61450.81469.12188.92289.12417.52664.72770.82837.62832.22922.92763.12763.12753.72298.52258.62271.62273.02330.72331.02372.82418.81046.11052.51018.21013.31121.21123.81107.61101.11097.31045.01024.6998.41076.61047.71016.3985.81007.2987.8949.9830.3857.4823.7822.0
us-gaap:CommonStockValue ▇▇▇▇▇▇▇▇███████████████▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁160.5159.2158.0157.9157.9157.8157.7159.7164.3164.9165.3166.8167.0167.2167.1166.4166.3165.9165.4165.3165.2165.2165.177.677.577.577.478.278.679.079.479.680.080.380.280.280.080.180.180.280.279.779.679.679.278.9
us-gaap:AdditionalPaidInCapitalCommonStock █▇▇▇▇▇▇▇███████████████▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁2187.92164.32137.82129.92127.02122.82122.12128.62229.22239.22247.42276.92280.52285.02280.92267.72262.72253.72243.82242.82240.32238.92236.4796.2794.2792.1788.3805.9818.5830.5838.8841.6852.0857.5856.1854.1851.4852.0852.0852.4853.2843.0842.3840.1834.4826.8
us-gaap:RetainedEarningsAccumulatedDeficit ▄▂▁▁▆▇▇█████▇▇▆▄▄▄▄▄▄▄▅▅▅▅▅▅▅▅▅▅▅▄▄▄▄▄▄▄▄▃▃▃▃▃380.656.8-155.1-90.5677.9829.6941.11049.11037.71090.41070.51050.5888.8863.7790.3334.4315.0354.1373.8389.3404.8438.9509.8605.5615.1588.3590.7593.5583.1561.6548.0539.2485.5457.9433.4414.9402.2370.6347.9345.2314.0288.0170.2184.0168.2167.0
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▃▃▃▂▂▁▁▃▃▃▃▄▄▄▅▅▅▅▅▅▅▅▅▆▆▆▆▇▇▇▇▇▆▆▆███▇███████-654.3-683.7-689.9-728.2-773.9-821.1-803.4-672.7-660.4-656.9-651.0-571.3-573.2-552.8-484.6-470.0-485.4-502.1-510.0-466.7-479.3-470.2-492.5-433.2-434.3-439.7-443.1-356.4-356.4-363.5-365.1-363.1-372.5-371.1-371.3-272.6-285.9-286.4-294.2-270.6-259.6-260.8-261.8-246.3-258.1-250.7
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue NANANA2.93.9-2.6NA1.91.92.81.42.03.12.72.61.32.41.01.20.21.41.62.1-0.41.91.3NANA0.31.72.30.71.80.42.00.4NANA1.5-0.71.5-1.01.6-0.42.01.3
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities █▅▃▅▃▁▄▄▃▃▆▆▄▃▄▅▃▃▄▅▄▂▃▃▂▂▂▃▂▂▃▄▃▂▃▃▃▂▃▃▂▁▃▂▂▁456.5251.1113.1249.9103.3-47.9200.7180.5131.8104.3321.5322.0183.480.9193.7227.7127.599.9196.1220.9139.247.0102.067.057.7-9.659.762.144.3-6.975.3149.993.0-1.2120.690.264.04.4103.594.944.5-27.074.447.48.1-14.4
us-gaap:NetCashProvidedByUsedInInvestingActivities ▆▆▆▆▁▆▆▆▆▆▆▆▆▆▆▄▆▆▆▆▅▆▂▆▇▇▇▇▇▇▇▇▇▆▆▃▆▆▆▆▄█▆▇▆▇-35.2-51.2-75.6-56.8-607.4-95.9-113.8-80.5-89.1-82.2-110.7-95.7-86.5-89.4-79.2-268.5-67.8-83.0-76.3-110.1-213.3-73.8-452.9-28.0-1.2-21.9-17.7-15.9-11.5-16.6-17.921.5-20.4-27.0-29.8-367.0-58.8-56.8-47.8-34.9-312.5135.6-108.2-11.6-59.419.5
us-gaap:NetCashProvidedByUsedInFinancingActivities ▁▃▃▃█▅▄▄▄▃▃▂▄▃▃▅▄▄▄▄▃▄█▄▄▄▄▄▄▄▄▄▄▄▄▅▄▄▃▄▄▄▅▄▄▄-408.5-129.3-131.0-148.6547.0118.2-43.2-49.6-21.5-95.0-188.7-213.7-61.9-100.5-152.1112.1-43.6-33.2-61.9-50.7-174.8-50.1489.0-17.4-20.9-28.5-48.8-28.2-30.1-41.4-33.4-29.2-24.0-44.0-28.7181.3-27.2-31.8-69.2-18.2-7.1-15.699.0-30.8-10.3-13.6
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect ▆█▁▇▇▄▇▇▆▂12.970.2-93.044.843.4-26.443.550.521.2-73.1NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:DeferredIncomeTaxExpenseBenefit ▆█▇▇▆▇▆▇▇▇▇█▇▇▁▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇█▇▇▇▇-78.451.641.4-9.5-45.6-6.5-34.75.6-13.6-3.0-9.450.212.7-18.9-437.9-5.9-21.19.5-0.5-1.6-18.5-14.720.6-1.5-6.9-3.17.37.44.56.0-16.512.25.310.410.515.96.012.6-6.54.44.284.5-10.915.83.82.5
us-gaap:DepreciationDepletionAndAmortization ▇▇▇▇▇█▇████████▇▇▇▇▇▇▇▆▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁142.0145.2143.3142.1136.5146.5137.1156.0151.4152.9150.4153.6150.7146.7147.5139.2137.1135.1136.1135.3132.4129.7124.035.834.734.434.834.935.234.234.134.134.232.932.226.626.625.525.225.525.423.222.121.621.621.6
us-gaap:IncreaseDecreaseInInventories █▅█▃▁▃▄▅▃▅▄▅▇▃▄▅▄▆▆▃▃▄▃▅▅▅▅▃▆▄▄▃▅▄▃▃▅▅▆▅▄▃▄▅▄▂56.910.761.9-14.8-51.4-24.3-10.57.1-20.811.2-9.09.350.1-14.9-8.920.42.523.822.2-20.3-19.5-6.3-20.710.95.56.011.3-22.133.31.13.0-21.311.5-1.8-19.2-19.711.69.423.715.7-2.3-20.11.75.7-6.6-32.6
us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet ▄▄▆▂▂▆▁█▄▄▆▆▇▃▇▁▄▂▃▃▄▆▂▄▅▄▆▅▄▅▄▅▅▄▄▅▄▅▇▅▅▃▄▄▅▄-0.3-1.03.2-4.0-4.52.7-6.76.5-1.1-1.02.42.24.9-3.65.3-6.1-0.8-4.8-3.0-2.4-1.23.1-5.0-0.40.2-0.32.60.1-0.20.0-0.30.20.4-0.6-0.50.3-0.10.34.60.00.1-2.3-0.4-0.40.5-0.2
us-gaap:NetCashProvidedByUsedInOperatingActivities █▅▃▅▃▁▄▄▃▃▆▆▄▃▄▅▃▃▄▅▄▂▃▃▂▂▂▃▂▂▃▄▃▂▃▃▃▂▃▃▂▁▃▂▂▁456.5251.1113.1249.9103.3-47.9200.7180.5131.8104.3321.5322.0183.480.9193.7227.7127.599.9196.1220.9139.247.0102.067.057.7-9.659.762.144.3-6.975.3149.993.0-1.2120.690.264.04.4103.594.944.5-27.074.447.48.1-14.4
us-gaap:NetIncomeLoss ▇▇▅▁▅▅▅▅▅▅▆▆▆▅█▆▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▆▅▅▅▅▅▅▅▅▅▆▅▅▅▅355.8243.6-33.0-736.8-120.1-80.0-77.244.2-20.041.753.3195.158.620.9489.352.7-5.913.417.517.5-1.0-37.9-62.75.942.313.112.826.137.329.524.769.743.740.534.628.747.638.718.747.242.1133.72.031.816.914.1
us-gaap:ShareBasedCompensation ▁▄█▅▅▂▃▅▄▅▄▅▅▅▄▄▄▃▃▄▃▄▄▃▄▃▃▃▂▄▄▄▄▄▄▃▃▃▃▃▃▃▃▃▄▃-0.72.06.53.03.90.21.83.62.03.32.83.03.13.12.72.42.51.51.42.41.52.22.11.81.91.81.61.10.32.12.42.32.02.12.01.71.11.41.51.41.51.41.61.62.01.5
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities ▆▆▆▆▁▆▆▆▆▆▆▆▆▆▆▄▆▆▆▆▅▆▂▆▇▇▇▇▇▇▇▇▇▆▆▃▆▆▆▆▄█▆▇▆▇-35.2-51.2-75.6-56.8-607.4-95.9-113.8-80.5-89.1-82.2-110.7-95.7-86.5-89.4-79.2-268.5-67.8-83.0-76.3-110.1-213.3-73.8-452.9-28.0-1.2-21.9-17.7-15.9-11.5-16.6-17.921.5-20.4-27.0-29.8-367.0-58.8-56.8-47.8-34.9-312.5135.6-108.2-11.6-59.419.5
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▂▄▅▄▅▇█▆▆▇█▇▆▆▆▄▅▆▆▄▄▅▄▂▂▂▂▁▁▁▁▁▂▂▃▅▅▅▅▅▃▂▂▂▁▂35.251.275.656.870.695.9113.880.589.1102.2110.798.586.589.584.359.167.983.078.662.061.376.151.228.627.823.322.117.213.918.620.415.824.430.244.965.069.975.972.565.037.825.621.921.720.321.4
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities ▁▃▃▃█▅▄▄▄▃▃▂▄▃▃▅▄▄▄▄▃▄█▄▄▄▄▄▄▄▄▄▄▄▄▅▄▄▃▄▄▄▅▄▄▄-408.5-129.3-131.0-148.6547.0118.2-43.2-49.6-21.5-95.0-188.7-213.7-61.9-100.5-152.1112.1-43.6-33.2-61.9-50.7-174.8-50.1489.0-17.4-20.9-28.5-48.8-28.2-30.1-41.4-33.4-29.2-24.0-44.0-28.7181.3-27.2-31.8-69.2-18.2-7.1-15.699.0-30.8-10.3-13.6
us-gaap:ProceedsFromIssuanceOfLongTermDebt ▁█0.0365.0NA49.3938.2225.0NA800.025.00.0NA0.019.7550.3NA160.00.01875.0NA0.00.00.0NANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:RepaymentsOfLongTermDebt ▂▃▄▂▂▁▁▄▁▁▁▂▁▃▁▁▁█▂▁▂▁▄▁▁▁▁▂▁▁▁▁▁▁▁▁▁▁370.0485.2715.4166.0350.475.40.1693.50.450.2122.4173.640.2609.9130.517.317.41872.7259.217.1141.917.1727.51.11.11.013.2149.00.10.112.30.00.011.412.20.07.70.0NA0.0NANANANANANA
us-gaap:PaymentsOfDividends ▇▇▇▇▇▇▇████████████████▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁32.031.731.631.631.631.530.832.832.733.033.333.433.533.433.433.333.233.133.033.033.133.033.015.515.515.515.615.715.815.915.916.016.116.016.116.016.016.016.016.016.115.915.816.015.715.8
 us-gaap:PaymentsForRepurchaseOfCommonStock us-gaap:ShareRepurchaseProgram,us-gaap:StatementClassOfStock oln:A2018ShareRepurchaseProgram,us-gaap:CommonClassA▁▁▁▁▁▁▂█▂▂▃▁▂0.00.00.00.00.00.010.3108.813.513.233.27.79.1NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument oln:A1000SeniorNotesDue2025NA1e-05NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument oln:A2022NotesNANA5.5e-06NANANA5.5e-08NANANA5.5e-08NANANA5.5e-08NANANA5.5e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument oln:A2023NotesNANA9.75e-06NANANA9.75e-08NANANA9.75e-08NANANA9.75e-08NANANA9.75e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument oln:A2025NotesNA1e-051e-05NANANA1.0000000000000001e-07NANANA1.0000000000000001e-07NANANA1.0000000000000001e-07NANANA1.0000000000000001e-07NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument oln:A2025Notes950NANA9.5e-06NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument oln:A5000MillionSeniorSecuredDelayedDrawTermLoanNANA4.125e-06NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument oln:A720.0millionSeniorNotesDue2023NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument oln:VariableRateGoZoneBondsNANA3.625e-06NANANA2.85e-08NANANA3.6700000000000004e-08NANANA3.27e-08NANANA2.47e-08NANANANANANANANANANANANANANANANANANANA1.78e-08NANANA1.7600000000000002e-08NANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument oln:VariableRateRecoveryZoneBondsNANA3.625e-06NANANA2.85e-08NANANA3.6700000000000004e-08NANANA3.27e-08NANANA2.47e-08NANANANANANANANANANANANANANANANANANANA1.78e-08NANANA1.7600000000000002e-08NANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument,us-gaap:SubsequentEventType oln:A720.0millionSeniorNotesDue2023,us-gaap:SubsequentEventNANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value160159158157157157157159164164165166167167167166166165165165165165165777777777878797979808080808080808080797979797878
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.91.91.91.91.81.71.71.71.81.81.81.81.81.81.81.81.91.91.91.91.91.81.82.92.92.92.92.82.82.92.82.82.92.92.92.83.23.33.33.23.33.33.94.14.14.14.1

Shares Issued

us-gaap:SharesIssued us-gaap:StatementEquityComponents

us-gaap:SharesIssued

us-gaap:CommonStock


Shares
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value15815715715715715916416416516616716716716616616516516516516516577777777787879797980808080808080808.02e-057.97e-0579797.92e-057.890000000000001e-05787774
Percentage of SharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Common Stock Shares Issued

us-gaap:CommonStockSharesIssued

us-gaap:CommonStockSharesIssued


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value160159158157157157157159164164165166167167167166166165165165165165165777777777878797979808080808080808080797979797878
Percentage of CommonStockSharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Common Stock Shares Authorized

us-gaap:CommonStockSharesAuthorized

us-gaap:CommonStockSharesAuthorized


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value240240240240240240240240240240240240240240240240240240240240240240240120120120120120120120120120120120120120120120120120120120120120120120120
Percentage of CommonStockSharesAuthorized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Common Stock Shares Outstanding

us-gaap:CommonStockSharesOutstanding

us-gaap:CommonStockSharesOutstanding


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value160159158157157157157159164164165166167167167166166165165165165165165777777777878797979808080808080808080797979797878
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value163160157157157162164166168168169168166167166165165787878798080808181818080808.109999999999999e-058.04e-05807.98e-057.94e-05
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value159158157157157161164165167167167166166165165165165777777787879798080808080808e-057.96e-05797.9e-057.879999999999999e-05
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount


Antidilutive
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value0.13.21010107.48.05.62.42.52.51.66.92.41.96.97.02.40.81.40.60.60.60.90.61.41.01.80.81.70.01.31.36e-07
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value2.231.54-0.21-4.67-0.76-0.51-0.490.27-0.120.250.321.170.350.132.930.32-0.040.080.110.11-0.01-0.23-0.390.080.550.170.160.330.470.370.310.870.540.50.430.360.590.480.230.590.531.680.030.40.210.18
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value2.171.51-0.21-4.67-0.76-0.51-0.490.27-0.120.250.321.160.350.122.890.31-0.040.080.10.11-0.01-0.23-0.390.080.540.170.160.330.470.370.310.860.540.50.430.350.590.480.230.580.521.660.020.40.210.18
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Allocated Share Based Compensation Expense

us-gaap:AllocatedShareBasedCompensationExpense

us-gaap:AllocatedShareBasedCompensationExpense


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value7.24.77.83.44.32.00.94.2-1.35.64.34.14.46.54.23.04.27.31.43.81.64.42.42.83.92.52.41.82.12.93.73.43.52.72.42.21.91.9
Percentage of AllocatedShareBasedCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.30.20.50.20.30.10.10.3-0.10.40.30.20.30.40.30.20.30.50.10.30.10.30.20.50.70.50.50.30.40.50.70.50.50.40.40.40.40.4

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value3852495.3-691.1-72.9-97.7-207.931-23.535-26.41973838474681021-25.830-10.1-15.6-122.07.04716-73.926443122794240-64.1424846-4.93643134-13.5439.511
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax17.313.00.3-48.1-5.9-6.9-15.02.0-1.52.3-1.610.52.22.329.34.40.71.4-1.92.1-0.7-1.2-9.61.38.93.2-14.84.47.85.44.011.86.56.5-10.97.29.59.2-1.16.68.230.9-3.510.12.33.2

Cost Of Goods And Services Sold

us-gaap:CostOfGoodsAndServicesSold

us-gaap:CostOfGoodsAndServicesSold


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value17121423145713071235137412701357146313471391144114601528139613451404139312271284123611751148460445433421492463475469528531504487475391392368432413359323366347312
Percentage of CostOfGoodsAndServicesSold100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax77.174.288.190.999.696.491.686.191.986.785.177.084.589.486.286.592.088.988.588.490.787.290.686.283.283.684.482.981.382.383.678.881.480.183.081.976.977.582.678.678.282.483.984.785.786.3

Gains Losses On Extinguishment Of Debt

us-gaap:GainsLossesOnExtinguishmentOfDebt

us-gaap:GainsLossesOnExtinguishmentOfDebt


Gains
Period End2021-06-30
Value-15400000.0
Percentage of GainsLossesOnExtinguishmentOfDebt100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.7

us-gaap:GainsLossesOnExtinguishmentOfDebt us-gaap:DebtInstrument

oln:A1000SeniorNotesDue2025


Gains
Period End2021-06-30
Value-11300000.0
Percentage of GainsLossesOnExtinguishmentOfDebt73.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oln:A1000SeniorNotesDue20250.0

oln:A500SeniorNotesDue2030


Gains
Period End2021-06-30
Value-600000.0
Percentage of GainsLossesOnExtinguishmentOfDebt3.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oln:A500SeniorNotesDue20300.0

oln:A5625SeniorNotesDue2029


Gains
Period End2021-06-30
Value-2900000.0
Percentage of GainsLossesOnExtinguishmentOfDebt18.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oln:A5625SeniorNotesDue20290.0

oln:SeniorSecuredTermLoans


Gains
Period End2021-06-30
Value-600000.0
Percentage of GainsLossesOnExtinguishmentOfDebt3.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oln:SeniorSecuredTermLoans0.0

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

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value337306-0.6-753.4-160.1-105.9-108.943-24.9537426174276060-21.8172321-23.6-55.4-85.99.36319194054483093626354466360266963219-2.33825
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax15.216.0-0.0-52.4-12.9-7.4-7.92.8-1.63.44.514.04.31.63.73.9-1.41.11.71.5-1.7-4.1-6.81.711.93.83.96.89.68.35.413.99.610.19.38.012.411.95.912.612.050.4-0.69.06.2

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest us-gaap:StatementBusinessSegments

oln:ChlorAlkaliProductsandVinylsSegment


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value1682715737-57.0-34.332112701201462101491301351295287
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest50.188.6-9500.0-5.035.632.4-30.2257.3-283.9226.7197.680.6201.1474.5223.7214.7-242.2488.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.614.13.42.6-4.6-2.42.47.14.47.89.011.38.67.68.48.33.55.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oln:ChlorAlkaliProductsandVinylsSegment17.531.30.05.0-8.8-4.50.012.97.813.80.020.114.713.90.014.76.110.5

oln:EpoxySegment


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value165652714-13.01115243.910193124-22.1-0.8-1.7-8.1-1.2
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest49.021.3-4533.3-2.08.1-11.0-14.055.3-15.719.825.611.933.4-80.4-1.3-2.837.2-6.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.43.41.61.0-1.00.81.11.50.20.71.21.71.4-1.3-0.0-0.1-0.5-0.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oln:EpoxySegment19.49.80.03.1-3.32.50.04.70.82.00.04.84.6-3.70.0-0.3-1.6-0.2

oln:WinchesterSegment


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value10985442116107.013109.14.310111211171925
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest32.627.8-7466.7-2.8-10.0-9.9-6.431.7-40.617.15.83.915.943.618.328.5-87.2140.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.94.42.71.51.30.70.50.90.60.60.30.60.70.70.71.11.21.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oln:WinchesterSegment27.221.90.010.28.35.60.07.46.15.80.05.97.17.00.09.411.215.4

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-18.56232-16.6-40.0-25.9-31.7-0.4-4.9112066156.6-428.67.7-15.94.56.03.8-22.6-17.5-23.23.4216.56.61418185.8231923201815217.8222186-4.37.08.31.1
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.83.32.0-1.2-3.2-1.8-2.3-0.0-0.30.71.33.50.90.4-26.50.5-1.00.30.40.3-1.7-1.3-1.80.64.01.31.32.43.23.21.03.52.93.73.43.13.14.31.74.04.119.7-1.11.62.00.3

Income Taxes Paid Net

us-gaap:IncomeTaxesPaidNet

us-gaap:IncomeTaxesPaidNet


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value774.7-7.1-5.60.62.5-11.33.32617218.49.0146.86.05.10.1-18.95.17.63.6-0.11.62.21.66.37.621131813227.4-0.17.8137.1-75.919141.3-0.3-6.10.8-0.3
Percentage of IncomeTaxesPaidNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.50.2-0.4-0.40.00.2-0.80.21.71.11.30.40.50.80.40.40.30.0-1.40.40.60.3-0.00.30.40.31.31.33.72.43.21.93.51.2-0.01.32.71.4-17.03.52.60.3-0.1-1.40.2-0.1

Interest Expense

us-gaap:InterestExpense

us-gaap:InterestExpense


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value658485746963646357575959616359535252484747485714187.16.8179.69.79.99.99.79.18.16.05.86.57.97.97.47.25.96.46.26.9
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.04.45.25.25.64.44.64.13.63.73.63.23.53.73.73.43.43.33.53.33.53.64.52.73.41.41.43.01.71.71.81.51.51.41.41.01.11.31.81.41.41.71.51.51.51.9

Interest Paid Net

us-gaap:InterestPaidNet

us-gaap:InterestPaidNet


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value559810757635863275552544864416245632973248417136.75.56.66.0125.3128.1123.7123.87.43.57.5-44.47.44.77.54.67.54.97.6
Percentage of InterestPaidNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.55.16.54.05.14.14.51.73.53.43.42.63.72.43.82.94.21.95.31.76.21.31.11.31.01.31.22.20.92.21.41.90.62.00.61.30.71.5-10.01.30.91.71.21.71.22.1

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value355243-33.0-736.8-120.1-80.0-77.244-20.04153195582048952-5.9131717-1.0-37.9-62.75.942131226372924694340342847381847421332.0311614
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax16.012.7-2.0-51.3-9.7-5.6-5.62.8-1.32.73.310.43.41.230.23.4-0.40.91.31.2-0.1-2.8-4.91.17.92.52.64.46.55.14.410.46.76.45.94.99.47.64.28.68.030.70.57.34.23.9

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value355243-736.8-120.1-80.044-20.04153195582048952-5.9131717-1.0-37.9-62.75.942131226372924694340342847381847421332.0311614
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax16.012.7-51.3-9.7-5.62.8-1.32.73.310.43.41.230.23.4-0.40.91.31.2-0.1-2.8-4.91.17.92.52.64.46.55.14.410.46.76.45.94.99.47.64.28.68.030.70.57.34.23.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Operating Income Loss

us-gaap:OperatingIncomeLoss

us-gaap:OperatingIncomeLoss


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value39538180-683.8-95.8-47.5-49.31032895126314150841191122969696723-7.4-29.4228126255763573410373746553706936777038-5.2332219
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax17.819.94.9-47.6-7.7-3.3-3.66.61.86.17.816.88.75.07.37.22.04.45.04.71.7-0.5-2.34.315.25.05.19.711.19.96.215.511.311.811.29.213.813.68.214.213.48.9-1.37.75.45.4

Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value167.01930-17.9-2.5-12.1-3.3-3.6-2.4-0.1
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.70.41.42.4-1.3-0.2-0.8-0.2-0.2-0.1-0.0

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

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value2.4-11.411178.2-9.011-15.73.3-8.3-6.5-2.0-26.1120.09.8156.0-21.34.6-10.815-7.0-1.70.3-1.4-1.3-1.50.30.7
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.1-0.60.71.20.7-0.60.8-1.00.2-0.5-0.4-0.1-1.50.70.00.61.00.4-1.50.3-0.81.1-0.6-0.30.1-0.3-0.3-0.30.10.1

Other Comprehensive Income Loss Net Of Tax

us-gaap:OtherComprehensiveIncomeLossNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value296.2384547-17.7-130.7-12.3-3.5-5.9-79.71.9-20.417-14.615167.9-43.312-9.122-59.31.15.43.4-86.70.07.11.6
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.30.32.33.23.8-1.2-9.4-0.8-0.2-0.4-4.90.1-1.21.0-0.91.01.10.5-3.10.9-0.71.7-4.70.21.00.7-17.30.01.20.3

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value22211918165414371241142513871576159215531635187217281710161915541526156713851452136413481267533535518499593570577562670652630587581508507445550529436385432405362
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService, us-gaap:StatementBusinessSegments

oln:Aromaticsandallylics, oln:EpoxySegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value366312238198167217228237234243253345237308
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax16.516.314.413.813.515.316.515.114.715.715.518.513.818.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax16.516.314.413.813.515.316.515.114.715.715.518.513.818.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oln:Aromaticsandallylics oln:EpoxySegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

oln:Causticsoda, oln:ChlorAlkaliProductsandVinylsSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value400347354373320360392421461462627539527504631442424405
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax18.018.121.525.925.825.328.326.728.929.738.428.830.529.539.028.527.825.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax18.018.121.525.925.825.328.326.728.929.738.428.830.529.539.028.527.825.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oln:Causticsoda oln:ChlorAlkaliProductsandVinylsSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

oln:Chlorinechlorinederivativesandothercoproducts, oln:ChlorAlkaliProductsandVinylsSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value566520438382331399369454448410353511491431285438440431
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax25.527.126.526.626.728.026.728.828.126.421.627.328.425.217.628.228.927.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax25.527.126.526.626.728.026.728.828.126.421.627.328.425.217.628.228.927.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oln:Chlorinechlorinederivativesandothercoproducts oln:ChlorAlkaliProductsandVinylsSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

oln:Commercial, oln:WinchesterSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value28126122515213512710013110310692118105111106128117117
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.713.613.610.610.98.97.28.36.56.85.66.36.16.56.68.37.77.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.713.613.610.610.98.97.28.36.56.85.66.36.16.56.68.37.77.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oln:Commercial oln:WinchesterSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

oln:Epoxyresins, oln:EpoxySegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value483350281277230259241273284280254301306294244262259268
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax21.818.317.019.318.618.217.417.417.818.015.616.117.717.215.116.917.017.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax21.818.317.019.318.618.217.417.417.818.015.616.117.717.215.116.917.017.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oln:Epoxyresins oln:EpoxySegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

oln:Militaryandlawenforcement, oln:WinchesterSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value122128115545760545761505355605958555144
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.56.77.03.84.64.33.93.73.83.33.33.03.53.53.63.53.42.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.56.77.03.84.64.33.93.73.83.33.33.03.53.53.63.53.42.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oln:Militaryandlawenforcement oln:WinchesterSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementBusinessSegments

oln:ChlorAlkaliProductsandVinylsSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value96786779375565175976287690987298010511018936917881865836
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax43.545.248.052.552.553.355.055.657.156.160.056.158.954.756.656.756.753.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax43.545.248.052.552.553.355.055.657.156.160.056.158.954.756.656.756.753.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oln:ChlorAlkaliProductsandVinylsSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

oln:EpoxySegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value850662519476397477470511518524508647543603536489492567
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax38.334.531.433.132.033.533.932.432.633.731.134.631.535.333.131.532.236.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax38.334.531.433.132.033.533.932.432.633.731.134.631.535.333.131.532.236.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oln:EpoxySegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

oln:WinchesterSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value404389340206192188154188164157145174165170165183169162
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax18.220.320.614.415.513.211.212.010.410.18.99.39.610.010.211.811.110.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax18.220.320.614.415.513.211.212.010.410.18.99.39.610.010.211.811.110.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oln:WinchesterSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical

country:US


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value13401100113894075186680196592390993810471011947897915867875
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax60.457.368.865.460.560.857.761.358.058.557.455.958.555.455.458.956.855.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax60.457.368.865.460.560.857.761.358.058.557.455.958.555.455.458.956.855.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:US100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

oln:Otherforeign


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value431465305305320331366381405367419493467437425398413392
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax19.424.218.521.325.823.226.424.225.523.625.626.427.025.626.325.627.125.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax19.424.218.521.325.823.226.424.225.523.625.626.427.025.626.325.627.125.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oln:Otherforeign100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:Europe


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value449353210191169227220229264276277331249325
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax20.218.412.713.313.715.915.914.616.617.817.017.714.419.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax20.218.412.713.313.715.915.914.616.617.817.017.714.419.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:Europe100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

country:US, oln:ChlorAlkaliProductsandVinylsSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value713577627596450533513613601604654682665608
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax32.130.137.941.536.337.537.038.937.738.940.036.538.535.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax32.130.137.941.536.337.537.038.937.738.940.036.538.535.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:US oln:ChlorAlkaliProductsandVinylsSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

country:US, oln:EpoxySegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value253158179161122158146177175164152209200180
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.48.210.911.39.911.110.611.311.010.69.311.211.610.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.48.210.911.39.911.110.611.311.010.69.311.211.610.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:US oln:EpoxySegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

country:US, oln:WinchesterSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value373365331182178174140174146141130155146158
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax16.819.020.012.714.412.210.211.19.29.18.08.38.59.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax16.819.020.012.714.412.210.211.19.29.18.08.38.59.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:US oln:WinchesterSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

oln:Otherforeign, oln:ChlorAlkaliProductsandVinylsSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value214260141135174195219235269229280328303282
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.613.68.59.414.013.715.814.916.914.817.217.517.516.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.613.68.59.414.013.715.814.916.914.817.217.517.516.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oln:Otherforeign oln:ChlorAlkaliProductsandVinylsSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

oln:Otherforeign, oln:EpoxySegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value192184157147134124136134120124127148148144
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.79.69.510.210.88.79.88.57.68.07.88.08.68.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.79.69.510.210.88.79.88.57.68.07.88.08.68.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oln:Otherforeign oln:EpoxySegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

oln:Otherforeign, oln:WinchesterSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value24206.82211111011151310161511
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.11.10.41.60.90.80.70.71.00.80.70.90.90.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.11.10.41.60.90.80.70.71.00.80.70.90.90.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oln:Otherforeign oln:WinchesterSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:Europe, oln:ChlorAlkaliProductsandVinylsSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3929242226302927393845405045
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.81.51.51.62.22.12.11.72.52.52.82.12.92.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.81.51.51.62.22.12.11.72.52.52.82.12.92.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:Europe oln:ChlorAlkaliProductsandVinylsSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:Europe, oln:EpoxySegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value403320182166140194186199222235228289195278
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax18.216.711.011.611.313.613.512.714.015.214.015.511.316.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax18.216.711.011.611.313.613.512.714.015.214.015.511.316.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:Europe oln:EpoxySegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:Europe, oln:WinchesterSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value6.33.82.71.82.32.53.82.82.32.84.01.84.21.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.30.20.20.10.20.20.30.20.10.20.20.10.20.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.30.20.20.10.20.20.30.20.10.20.20.10.20.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:Europe oln:WinchesterSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Selling General And Administrative Expense

us-gaap:SellingGeneralAndAdministrativeExpense

us-gaap:SellingGeneralAndAdministrativeExpense


Selling
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1001061121129996102110971071091101101009686808873827988633539474142424355364849374245433939423933333532
Percentage of SellingGeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.55.66.87.88.06.87.47.06.16.96.75.96.45.95.95.65.25.65.35.65.86.55.06.77.59.18.47.27.47.69.95.47.57.86.47.38.98.68.97.28.09.18.67.78.88.9

Assets

us-gaap:Assets

us-gaap:Assets


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value86578453827082668978918491879232923591698997922791379160921893668794881387628792890991169321270827012681269827532790276328022843278627362777281724852439244924922464239120481962193319311932
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Assets us-gaap:StatementBusinessSegments

oln:ChlorAlkaliProductsandVinylsSegment


Assetsus-gaap:
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value61656898683770086521
Percentage of Assets74.575.176.076.074.4
Percentage of Assets74.575.176.076.074.4
Percentage of Assets oln:ChlorAlkaliProductsandVinylsSegment100.0100.0100.0100.0100.0

oln:CorporateOther


Assetsus-gaap:
Period End2020-12-312019-12-312018-12-312011-12-312010-12-31
Value484435238468649
Percentage of Assets5.94.72.619.131.7
Percentage of Assets5.94.72.619.131.7
Percentage of Assets oln:CorporateOther100.0100.0100.0100.0100.0

oln:EpoxySegment


Assetsus-gaap:
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value11531469152115971514
Percentage of Assets13.916.016.917.317.3
Percentage of Assets13.916.016.917.317.3
Percentage of Assets oln:EpoxySegment100.0100.0100.0100.0100.0

oln:WinchesterSegment


Assetsus-gaap:
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312011-12-312010-12-31
Value468385399425424328268
Percentage of Assets5.74.24.44.64.813.413.1
Percentage of Assets5.74.24.44.64.813.413.1
Percentage of Assets oln:WinchesterSegment100.0100.0100.0100.0100.0100.0100.0

Liabilities

us-gaap:Liabilities

us-gaap:Liabilities


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value65826756682067976789689567706567646463326165630463746397646470686535654164896462657867446903166216481663168416311666165617011745174117111779174014381423146314841476144112181105111011091109
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets76.079.982.582.275.675.173.771.170.069.168.568.369.869.870.175.574.374.274.173.573.874.074.161.461.062.062.459.359.759.960.761.462.562.664.161.857.958.359.859.659.960.359.556.357.457.457.4

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value86578453827082668978918491879232923591698997922791379160921893668794881387628792890991169321270827012681269827532790276328022843278627362777281724852439244924922464239120481962193319311932
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value20741696145014692188228924172664277028372832292227632763275322982258227122732330233123722418104610521018101311211123110711011097104510249981076104710169851007987949830857823822822705663
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets24.020.117.517.824.424.926.328.930.030.931.531.730.230.229.924.525.725.825.926.526.226.025.938.639.038.037.640.740.340.139.338.637.537.435.938.242.141.740.240.440.139.740.543.742.642.642.60.00.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value-654.3-683.7-689.9-728.2-773.9-821.1-803.4-672.7-660.4-656.9-651.0-571.3-573.2-552.8-484.6-470.0-485.4-502.1-510.0-466.7-479.3-470.2-492.5-433.2-434.3-439.7-443.1-356.4-356.4-363.5-365.1-363.1-372.5-371.1-371.3-272.6-285.9-286.4-294.2-270.6-259.6-260.8-261.8-246.3-258.1-250.7-248.2-269.4-151.2
Percentage of StockholdersEquity-31.5-40.3-47.6-49.6-35.4-35.9-33.2-25.2-23.8-23.1-23.0-19.5-20.7-20.0-17.6-20.4-21.5-22.1-22.4-20.0-20.6-19.8-20.4-41.4-41.3-43.2-43.7-31.8-31.7-32.8-33.2-33.1-35.6-36.2-37.2-25.3-27.3-28.2-29.8-26.9-26.3-27.5-31.5-28.7-31.3-30.5-30.2-38.2-22.8
Percentage of Assets-7.6-8.1-8.3-8.8-8.6-8.9-8.7-7.3-7.2-7.2-7.2-6.2-6.3-6.0-5.3-5.0-5.5-5.7-5.8-5.3-5.4-5.2-5.3-16.0-16.1-16.4-16.4-12.9-12.8-13.2-13.0-12.8-13.4-13.6-13.4-9.7-11.5-11.7-12.0-10.9-10.5-10.9-12.8-12.5-13.3-13.0-12.80.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value21872164213721292127212221222128222922392247227622802285228022672262225322432242224022382236796794792788805818830838841852857856854851852852852853843842840834826823801742
Percentage of StockholdersEquity105.5127.6147.4145.097.292.787.879.980.578.979.477.982.582.782.898.7100.299.298.796.296.194.492.576.175.577.877.871.972.875.076.276.781.583.785.779.381.383.886.484.686.488.7101.498.0101.3100.6100.1113.7111.8
Percentage of Assets25.325.625.825.823.723.123.123.124.124.425.024.725.024.924.724.225.725.625.625.525.124.624.029.429.429.529.229.329.330.029.929.630.631.330.830.334.234.934.834.234.635.341.142.843.242.842.60.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value1601591581571571571571591641641651661671671671661661651651651651651657777777778787979798080808080808080807979797978787774
Percentage of StockholdersEquity7.79.410.910.77.26.96.56.05.95.85.85.76.06.16.17.27.47.37.37.17.17.06.87.47.47.67.67.07.07.17.27.37.77.88.07.47.67.98.18.08.18.49.69.39.69.69.611.011.2
Percentage of Assets1.91.91.91.91.81.71.71.71.81.81.81.81.81.81.81.81.91.91.91.91.91.81.82.92.92.92.92.82.82.92.82.82.92.92.92.83.23.33.33.23.33.33.94.14.14.14.10.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value38056-155.1-90.56778299411049103710901070105088886379033431535437338940443850960561558859059358356154853948545743341440237034734531428817018416816716895-1.6
Percentage of StockholdersEquity18.33.3-10.7-6.231.036.238.939.437.538.437.835.932.231.328.714.513.915.616.416.717.418.521.157.958.457.858.352.951.950.749.849.146.544.743.438.538.436.535.334.331.830.320.521.520.420.320.513.5-0.2
Percentage of Assets4.40.7-1.9-1.17.69.010.211.411.211.911.911.49.79.48.63.63.64.04.34.44.54.85.522.422.821.921.921.620.920.319.619.017.416.715.614.716.215.214.213.912.712.08.39.48.78.68.70.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Assets Current

us-gaap:AssetsCurrent

us-gaap:AssetsCurrent


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value22182013171716721616173917141769172616841707193817631699169917171691166915461553156218771933868844803816857879828839877793722749753749751780838842797882852840856860
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets25.623.820.820.218.018.918.719.218.718.419.021.019.318.518.418.319.218.917.617.717.520.620.732.131.330.030.231.131.530.030.030.928.526.427.026.730.130.831.933.734.233.343.143.443.444.344.5

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashAndCashEquivalentsAtCarryingValue


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value2722591892822371942201771261051781561441092182551841681841276631539225423219625626324524230728314193165103198220304318276280458393388411458246306
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.23.12.33.42.62.12.41.91.41.22.01.71.61.22.42.72.11.92.11.40.73.54.29.48.67.39.59.68.88.811.010.05.13.45.93.78.09.012.412.811.211.722.420.020.121.323.70.00.0

Inventory Net

us-gaap:InventoryNet

us-gaap:InventoryNet


Inventory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value736679674608619667695700698717711724716675682689666656630617636679685232221216210198220187186183204193195213197186176166182179155157163156123
Percentage of InventoryNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets8.58.08.27.46.97.37.67.67.67.87.97.97.87.47.47.47.67.47.27.07.17.57.48.68.28.17.87.27.96.86.76.57.37.17.07.67.97.67.26.77.47.57.68.08.48.16.4

Inventory Finished Goods

us-gaap:InventoryFinishedGoods

us-gaap:InventoryFinishedGoods


Inventory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value420366359363392419449474469498488493500440462470445448435405423452445153143141141130142116115117141132141149120111111104116119104103104
Percentage of InventoryFinishedGoods100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.94.34.34.44.44.64.95.15.15.45.45.35.54.85.05.05.15.15.04.64.85.04.85.75.35.35.24.75.14.24.14.15.14.85.15.34.94.64.64.24.75.05.15.35.4

Inventory L I F O Reserve

us-gaap:InventoryLIFOReserve

us-gaap:InventoryLIFOReserve


Inventory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value895848454342495759704958604649474736464033424363666665767679727379807877747577736674606258
Percentage of InventoryLIFOReserve100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.00.70.60.60.50.50.50.60.60.80.60.60.70.50.50.50.50.40.50.50.40.50.52.32.42.52.42.82.72.92.62.62.83.02.82.83.03.13.23.02.73.13.03.23.0

Other Assets Current

us-gaap:OtherAssetsCurrent

us-gaap:OtherAssetsCurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value11296664442542324284635354761482737443016233239121617101113151310131520201114101125282917102224
Percentage of OtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.31.10.80.50.50.60.30.30.30.50.40.40.50.70.50.30.40.50.40.20.30.40.40.50.60.60.40.40.50.60.50.40.50.60.70.70.50.60.40.41.01.21.40.90.61.21.3

Noncurrent Assets

us-gaap:NoncurrentAssets

us-gaap:NoncurrentAssets


Noncurrent
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value317133233482357537043953931
Percentage of NoncurrentAssets100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets38.336.238.738.842.342.434.5

us-gaap:NoncurrentAssets us-gaap:StatementGeographical

country:US


Noncurrent
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value286030173147321133523561889
Percentage of NoncurrentAssets90.290.890.489.890.590.195.6
Percentage of Assets34.632.835.034.838.338.233.0
Percentage of Assets country:US0.00.00.00.00.00.035.8

oln:Foreign


Noncurrent
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value310306334363352
Percentage of NoncurrentAssets9.89.29.610.29.5
Percentage of Assets3.83.33.73.94.0
Percentage of Assets oln:Foreign0.00.00.00.00.0

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross

us-gaap:PropertyPlantAndEquipmentGross


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value68906591626359085596545222612246219820291743
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets83.371.769.664.163.958.583.880.279.182.885.1

us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType

us-gaap:Building


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value409392387382375380212205204183163
Percentage of PropertyPlantAndEquipmentGross5.96.06.26.56.77.09.49.19.39.19.4
Percentage of Assets4.94.34.34.14.34.17.97.37.47.58.0
Percentage of Assets us-gaap:Building0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ConstructionInProgress


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value24534634121217112343479615357
Percentage of PropertyPlantAndEquipmentGross3.65.35.53.63.12.31.92.14.47.63.3
Percentage of Assets3.03.83.82.32.01.31.61.73.56.32.8
Percentage of Assets us-gaap:ConstructionInProgress0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:LandAndLandImprovements


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value282277276281281280157156155149141
Percentage of PropertyPlantAndEquipmentGross4.14.24.44.85.05.17.07.07.17.48.1
Percentage of Assets3.43.03.13.13.23.05.85.65.66.16.9
Percentage of Assets us-gaap:LandAndLandImprovements0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:LeaseholdImprovements


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value8.39.95.23.93.42.72.62.52.52.52.1
Percentage of PropertyPlantAndEquipmentGross0.10.20.10.10.10.00.10.10.10.10.1
Percentage of Assets0.10.10.10.00.00.00.10.10.10.10.1
Percentage of Assets us-gaap:LeaseholdImprovements0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:MachineryAndEquipment


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value59455566525250284765466518461835173915401379
Percentage of PropertyPlantAndEquipmentGross86.384.483.985.185.285.681.681.779.175.979.1
Percentage of Assets71.960.658.454.554.450.168.465.562.662.967.3
Percentage of Assets us-gaap:MachineryAndEquipment0.00.00.00.00.00.00.00.00.00.00.0

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value3893380437193602348433733268311230002892278126512537244423332222211720011891178816811587149914111385135713301324131612871259123612201191116412061192116811441122109810891068104810271017
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets45.045.045.043.638.836.735.633.732.531.530.928.727.826.725.323.724.122.721.620.318.917.416.152.151.350.649.348.147.246.644.943.543.843.541.942.848.047.946.745.044.645.652.153.453.152.7

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:PropertyPlantAndEquipmentNet


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value300530733171317932343282332333673410343334823456350135393575357936273659370437133793385939539139179199319369519689879911013102510341018961914885821780763675683683688695
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets34.736.438.338.536.035.736.236.536.937.438.737.538.338.638.838.241.241.542.342.242.642.342.433.734.034.334.534.034.135.035.234.936.437.537.236.138.737.536.133.031.731.932.934.835.435.636.0

Goodwill

us-gaap:Goodwill

us-gaap:Goodwill


Goodwill
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value14201420142014202119211921192119211921192119211921192120212021192119211921182119218621462174747747747747747747747747747747747747752627627627627627628300300300300300
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets16.416.817.217.223.623.123.123.023.023.123.623.023.223.123.022.624.124.024.224.124.523.523.327.627.727.927.727.126.827.026.726.326.827.326.926.725.225.725.625.225.526.314.715.315.515.515.5

us-gaap:Goodwill us-gaap:StatementBusinessSegments

oln:ChlorAlkaliProductsandVinylsSegment


Goodwillus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value12751275127512751832183218321832183218321832183218321833183218321832183218311877
Percentage of Goodwill89.889.889.889.886.586.586.586.586.586.586.586.586.586.586.586.586.586.586.586.4
Percentage of Assets14.715.115.415.420.420.019.919.819.820.020.419.920.120.019.919.620.820.820.920.1
Percentage of Assets oln:ChlorAlkaliProductsandVinylsSegment0.00.020.70.00.00.026.60.00.00.026.80.00.00.026.20.00.00.028.10.0

oln:EpoxySegment


Goodwillus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value144144144144287287287286287287287287287287287287287286286296
Percentage of Goodwill10.210.210.210.213.513.513.513.513.513.513.513.513.513.513.513.513.513.513.513.6
Percentage of Assets1.71.71.81.83.23.13.13.13.13.13.23.13.13.13.13.13.33.33.33.2
Percentage of Assets oln:EpoxySegment0.00.012.60.00.00.019.50.00.00.018.90.00.00.018.00.00.00.018.90.0

Intangible Assets Net Excluding Goodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill


Intangible
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value36538139940441643144846148049451152854456557859260561562965367166367711211611912312713013413814114514915215618181919
Percentage of IntangibleAssetsNetExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.24.54.84.94.64.74.95.05.25.45.75.76.06.26.36.36.97.07.27.47.57.37.34.24.34.54.64.64.74.94.95.05.25.45.55.60.70.80.80.8

Finite Lived Intangible Assets Net

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:FiniteLivedIntangibleAssetsNet


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312012-12-312011-12-312010-12-31
Value3653813994044164314484614804945115285445655785926056156296536716636771121161191231521915
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.24.54.84.94.64.74.95.05.25.45.75.76.06.26.36.36.97.07.27.47.57.37.34.24.34.54.65.50.80.7

us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:CustomerRelationships


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-312011-12-31
Value34135336837738839941242343844946347648850551552753654355457258356757710110410811112614019
Percentage of FiniteLivedIntangibleAssetsNet93.592.892.393.293.192.592.191.691.290.990.690.289.889.589.288.988.688.488.187.586.985.685.289.890.190.390.60.092.199.0
Percentage of Assets3.94.24.54.64.34.34.54.64.74.95.15.25.35.55.65.66.16.26.36.56.56.26.23.73.94.04.14.55.10.8
Percentage of Assets us-gaap:CustomerRelationships0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:DevelopedTechnologyRights


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value22262926273033363942454952555861646669727579820.00.00.00.0
Percentage of FiniteLivedIntangibleAssetsNet6.26.97.46.56.67.07.47.88.28.69.09.39.69.810.110.310.610.811.011.211.312.012.10.00.00.00.0
Percentage of Assets0.30.30.40.30.30.30.40.40.40.50.50.50.60.60.60.70.70.80.80.80.90.90.90.00.00.00.0
Percentage of Assets us-gaap:DevelopedTechnologyRights0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OtherIntangibleAssets


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-312011-12-31
Value1.21.21.21.21.21.21.21.21.20.10.10.30.30.30.30.30.30.40.40.50.50.60.60.60.60.70.70.91.10.2
Percentage of FiniteLivedIntangibleAssetsNet0.30.30.30.30.30.30.30.30.20.00.00.10.10.10.10.10.00.10.10.10.10.10.10.50.50.60.60.00.71.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:OtherIntangibleAssets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3703833603763713663773142952750.00.00.00.0
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0
Percentage of Assets4.34.54.44.54.14.04.13.43.23.00.00.00.00.0

us-gaap:OperatingLeaseRightOfUseAsset us-gaap:BalanceSheetLocation

oln:OperatingLeaseAssetsNet


Operating
Period End2020-12-312019-12-312019-09-302019-06-302019-03-31
Value360377314295275
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0
Percentage of Assets4.44.13.43.23.0
Percentage of Assets oln:OperatingLeaseAssetsNet0.00.00.00.00.0

Other Assets Noncurrent

us-gaap:OtherAssetsNoncurrent

us-gaap:OtherAssetsNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value11651171119111771179120511691170117411311150115911691197120812156256376446405884634871671791981911972002052132102142192242238183858679767292847171
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets13.513.914.414.213.113.112.712.712.712.312.812.612.813.113.113.07.17.27.47.36.65.15.26.26.67.47.17.27.27.47.67.47.78.08.17.93.33.43.53.53.23.23.54.74.43.73.7

Accounts Payable Current

us-gaap:AccountsPayableCurrent

us-gaap:AccountsPayableCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value806716729614520668651647669637636709681698669613656637570509536478608158148147146165186164148170189166174189130125149129142118115107111121117
Percentage of AccountsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets9.38.58.87.45.87.37.17.07.26.97.17.77.57.67.36.57.57.26.55.86.05.26.55.95.55.55.46.06.76.05.36.06.86.16.36.75.25.26.15.25.85.05.65.55.86.36.1

Accrued Income Taxes Current

us-gaap:AccruedIncomeTaxesCurrent

us-gaap:AccruedIncomeTaxesCurrent


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value351310147.77.4199.89.513222215169.49.67.18.17.5138.2144.910111.10.20.50.40.51.70.83.56.17.60.00.00.50.0
Percentage of AccruedIncomeTaxesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.00.0
Percentage of Assets0.40.20.10.20.10.10.20.10.10.10.30.20.20.20.10.10.10.10.10.20.10.20.10.40.40.00.00.00.00.00.10.00.10.20.30.00.00.00.0

Accrued Liabilities Current

us-gaap:AccruedLiabilitiesCurrent

us-gaap:AccruedLiabilitiesCurrent


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value426367358335318811329347298294333341284256274294261258263291293352328272205205214209194198244242231210228249234219237237222220197189189192193
Percentage of AccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.94.34.34.13.58.83.63.83.23.23.73.73.12.83.03.13.02.93.03.33.33.93.510.17.67.67.97.67.07.28.78.58.37.78.28.89.49.09.79.59.09.29.79.79.810.010.0

Liabilities Current

us-gaap:LiabilitiesCurrent

us-gaap:LiabilitiesCurrent


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value13451218119810429261565108210771050113911181073982971954999100698592289491810491147585509370377391394375407426437395434462388369399455454427391299300313310
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets15.514.414.512.610.317.011.811.711.412.412.411.610.710.610.410.711.411.210.510.210.311.512.321.618.813.814.014.214.113.614.515.015.714.415.616.415.615.116.318.318.417.919.115.215.616.216.1

Long Term Debt Current

us-gaap:LongTermDebtCurrent

us-gaap:LongTermDebtCurrent


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value1.142261.21.82.02.11.11.11261250.90.90.70.78181818080802052061431431616161212121212122323232312878889771.8
Percentage of LongTermDebtCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.50.30.00.00.00.00.00.01.41.40.00.00.00.00.90.90.90.90.90.92.22.25.35.30.60.60.60.50.50.40.40.40.40.80.80.91.00.53.53.63.73.80.1

Operating Lease Liability Current

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OperatingLeaseLiabilityCurrent


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value767874767776797171690.00.00.00.0
Percentage of OperatingLeaseLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0
Percentage of Assets0.90.90.90.90.90.80.90.80.80.80.00.00.00.0

us-gaap:OperatingLeaseLiabilityCurrent us-gaap:BalanceSheetLocation

oln:Currentoperatingleaseliabilities


Operating
Period End2020-12-312019-12-312019-09-302019-06-302019-03-31
Value7479717169
Percentage of OperatingLeaseLiabilityCurrent100.0100.0100.0100.0100.0
Percentage of Assets0.90.90.80.80.8
Percentage of Assets oln:Currentoperatingleaseliabilities0.00.00.00.00.0

Other Accrued Liabilities Current

us-gaap:OtherAccruedLiabilitiesCurrent

us-gaap:OtherAccruedLiabilitiesCurrent


Other
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value5542463642667676636453
Percentage of OtherAccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.70.50.50.40.50.72.92.72.32.62.6

Long Term Debt Noncurrent

us-gaap:LongTermDebtNoncurrent

us-gaap:LongTermDebtNoncurrent


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value33813706383739594073348933383339323230673104333635123534361136633518353035373597361536273675526528656658672676677678690689689690703503512524501494491418385402397398
Percentage of LongTermDebtNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets39.143.846.447.945.438.036.336.235.033.434.536.238.438.639.239.140.040.140.440.940.639.839.419.519.624.524.424.424.224.524.224.324.725.224.825.020.321.021.420.120.120.620.419.620.820.620.6

Deferred Income Tax Liabilities Net

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:DeferredIncomeTaxLiabilitiesNet


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value5214924434104144494545155065255185485124985111032
Percentage of DeferredIncomeTaxLiabilitiesNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.05.85.45.04.64.94.95.65.55.75.85.95.65.45.511.8

Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent


Pension
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value7337976746356386481821051545757
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets8.98.77.56.97.37.06.73.85.62.42.8

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

country:US, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Pension
Period End2020-12-312019-12-312018-12-31
Value413833
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent5.64.85.0
Percentage of Assets0.50.40.4
Percentage of Assets country:US us-gaap:OtherPostretirementBenefitPlansDefinedBenefit0.00.00.0

country:US, us-gaap:PensionPlansDefinedBenefit


Pension
Period End2020-12-312019-12-312018-12-31
Value374497439
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent51.162.365.1
Percentage of Assets4.55.44.9
Percentage of Assets country:US us-gaap:PensionPlansDefinedBenefit0.00.00.0

us-gaap:ForeignPlan, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Pension
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value11109.29.98.3
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent1.61.31.41.61.3
Percentage of Assets0.10.10.10.10.1
Percentage of Assets us-gaap:ForeignPlan us-gaap:OtherPostretirementBenefitPlansDefinedBenefit0.00.00.00.00.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit


Pension
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value358300235228184
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent48.937.734.936.028.9
Percentage of Assets4.33.32.62.52.1
Percentage of Assets us-gaap:ForeignPlan us-gaap:PensionPlansDefinedBenefit0.00.00.00.00.0

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent us-gaap:RetirementPlanType

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Pension
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value5249434647
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent7.26.16.47.37.4
Percentage of Assets0.60.50.50.50.5
Percentage of Assets us-gaap:OtherPostretirementBenefitPlansDefinedBenefit0.00.00.00.00.0

Other Liabilities Noncurrent

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OtherLiabilitiesNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value350329315313307317793765792733749756764764751731347364359335348340336335359361359363377377382371359363380355359366381359357355327330325316318
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.03.93.83.83.43.58.68.38.68.08.38.28.48.38.27.83.94.14.13.83.93.73.612.413.313.513.313.213.513.713.713.112.913.313.712.614.515.015.614.414.514.916.016.916.816.416.5

Operating Lease Liability Noncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value2993102913052992953032482292060.00.00.00.0
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0
Percentage of Assets3.53.73.53.73.33.23.32.72.52.20.00.00.00.0

us-gaap:OperatingLeaseLiabilityNoncurrent us-gaap:BalanceSheetLocation

oln:OperatingLeaseLiabilities


Operating
Period End2020-12-312019-12-312019-09-302019-06-302019-03-31
Value291303248229206
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0100.0100.0100.0
Percentage of Assets3.53.32.72.52.2
Percentage of Assets oln:OperatingLeaseLiabilities0.00.00.00.00.0

Lessee Operating Lease Liability Payments Due Year Two

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo


Lessee
Period End2020-12-31
Value66
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo100.0
Percentage of Assets0.8

Lessee Operating Lease Liability Payments Due Year Three

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree


Lessee
Period End2020-12-31
Value52
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree100.0
Percentage of Assets0.6

Lessee Operating Lease Liability Payments Due Year Four

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour


Lessee
Period End2020-12-31
Value41
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour100.0
Percentage of Assets0.5

Lessee Operating Lease Liability Payments Due Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive


Lessee
Period End2020-12-31
Value33
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive100.0
Percentage of Assets0.4

Lessee Operating Lease Liability Payments Due After Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive


Lessee
Period End2020-12-31
Value148
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive100.0
Percentage of Assets1.8

Operating Lease Liability

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiability


Operating
Period End2020-12-31
Value366
Percentage of OperatingLeaseLiability100.0
Percentage of Assets4.4

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue


Lessee
Period End2020-12-31
Value426
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue100.0
Percentage of Assets5.2

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount


Lessee
Period End2020-12-31
Value60
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount100.0
Percentage of Assets0.7

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value20741696145014692188228924172664277028372832292227632763275322982258227122732330233123722418104610521018101311211123110711011097104510249981076104710169851007987949830857823822822705663
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets24.020.117.517.824.424.926.328.930.030.931.531.730.230.229.924.525.725.825.926.526.226.025.938.639.038.037.640.740.340.139.338.637.537.435.938.242.141.740.240.440.139.740.543.742.642.642.60.00.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value-654.3-683.7-689.9-728.2-773.9-821.1-803.4-672.7-660.4-656.9-651.0-571.3-573.2-552.8-484.6-470.0-485.4-502.1-510.0-466.7-479.3-470.2-492.5-433.2-434.3-439.7-443.1-356.4-356.4-363.5-365.1-363.1-372.5-371.1-371.3-272.6-285.9-286.4-294.2-270.6-259.6-260.8-261.8-246.3-258.1-250.7-248.2-269.4-151.2
Percentage of StockholdersEquity-31.5-40.3-47.6-49.6-35.4-35.9-33.2-25.2-23.8-23.1-23.0-19.5-20.7-20.0-17.6-20.4-21.5-22.1-22.4-20.0-20.6-19.8-20.4-41.4-41.3-43.2-43.7-31.8-31.7-32.8-33.2-33.1-35.6-36.2-37.2-25.3-27.3-28.2-29.8-26.9-26.3-27.5-31.5-28.7-31.3-30.5-30.2-38.2-22.8
Percentage of Assets-7.6-8.1-8.3-8.8-8.6-8.9-8.7-7.3-7.2-7.2-7.2-6.2-6.3-6.0-5.3-5.0-5.5-5.7-5.8-5.3-5.4-5.2-5.3-16.0-16.1-16.4-16.4-12.9-12.8-13.2-13.0-12.8-13.4-13.6-13.4-9.7-11.5-11.7-12.0-10.9-10.5-10.9-12.8-12.5-13.3-13.0-12.80.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value21872164213721292127212221222128222922392247227622802285228022672262225322432242224022382236796794792788805818830838841852857856854851852852852853843842840834826823801742
Percentage of StockholdersEquity105.5127.6147.4145.097.292.787.879.980.578.979.477.982.582.782.898.7100.299.298.796.296.194.492.576.175.577.877.871.972.875.076.276.781.583.785.779.381.383.886.484.686.488.7101.498.0101.3100.6100.1113.7111.8
Percentage of Assets25.325.625.825.823.723.123.123.124.124.425.024.725.024.924.724.225.725.625.625.525.124.624.029.429.429.529.229.329.330.029.929.630.631.330.830.334.234.934.834.234.635.341.142.843.242.842.60.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value1601591581571571571571591641641651661671671671661661651651651651651657777777778787979798080808080808080807979797978787774
Percentage of StockholdersEquity7.79.410.910.77.26.96.56.05.95.85.85.76.06.16.17.27.47.37.37.17.17.06.87.47.47.67.67.07.07.17.27.37.77.88.07.47.67.98.18.08.18.49.69.39.69.69.611.011.2
Percentage of Assets1.91.91.91.91.81.71.71.71.81.81.81.81.81.81.81.81.91.91.91.91.91.81.82.92.92.92.92.82.82.92.82.82.92.92.92.83.23.33.33.23.33.33.94.14.14.14.10.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value38056-155.1-90.56778299411049103710901070105088886379033431535437338940443850960561558859059358356154853948545743341440237034734531428817018416816716895-1.6
Percentage of StockholdersEquity18.33.3-10.7-6.231.036.238.939.437.538.437.835.932.231.328.714.513.915.616.416.717.418.521.157.958.457.858.352.951.950.749.849.146.544.743.438.538.436.535.334.331.830.320.521.520.420.320.513.5-0.2
Percentage of Assets4.40.7-1.9-1.17.69.010.211.411.211.911.911.49.79.48.63.63.64.04.34.44.54.85.522.422.821.921.921.620.920.319.619.017.416.715.614.716.215.214.213.912.712.08.39.48.78.68.70.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value160159158157157157157159164164165166167167167166166165165165165165165777777777878797979808080808080808080797979797878
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.91.91.91.91.81.71.71.71.81.81.81.81.81.81.81.81.91.91.91.91.91.81.82.92.92.92.92.82.82.92.82.82.92.92.92.83.23.33.33.23.33.33.94.14.14.14.1

Additional Paid In Capital Common Stock

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:AdditionalPaidInCapitalCommonStock


Additional
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value21872164213721292127212221222128222922392247227622802285228022672262225322432242224022382236796794792788805818830838841852857856854851852852852853843842840834826823
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets25.325.625.825.823.723.123.123.124.124.425.024.725.024.924.724.225.725.625.625.525.124.624.029.429.429.529.229.329.330.029.929.630.631.330.830.334.234.934.834.234.635.341.142.843.242.842.6

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


Retained
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value38056-155.1-90.567782994110491037109010701050888863790334315354373389404438509605615588590593583561548539485457433414402370347345314288170184168167168
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.40.7-1.9-1.17.69.010.211.411.211.911.911.49.79.48.63.63.64.04.34.44.54.85.522.422.821.921.921.620.920.319.619.017.416.715.614.716.215.214.213.912.712.08.39.48.78.68.7

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value-654.3-683.7-689.9-728.2-773.9-821.1-803.4-672.7-660.4-656.9-651.0-571.3-573.2-552.8-484.6-470.0-485.4-502.1-510.0-466.7-479.3-470.2-492.5-433.2-434.3-439.7-443.1-356.4-356.4-363.5-365.1-363.1-372.5-371.1-371.3-272.6-285.9-286.4-294.2-270.6-259.6-260.8-261.8-246.3-258.1-250.7-248.2-269.4
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-7.6-8.1-8.3-8.8-8.6-8.9-8.7-7.3-7.2-7.2-7.2-6.2-6.3-6.0-5.3-5.0-5.5-5.7-5.8-5.3-5.4-5.2-5.3-16.0-16.1-16.4-16.4-12.9-12.8-13.2-13.0-12.8-13.4-13.6-13.4-9.7-11.5-11.7-12.0-10.9-10.5-10.9-12.8-12.5-13.3-13.0-12.80.0

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

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue


Adjustments
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value2.93.9-2.61.91.92.81.42.03.12.72.61.32.41.01.20.21.41.62.1-0.41.91.30.31.72.30.71.80.42.00.41.5-0.71.5-1.01.6-0.42.01.3
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-0.90.62.93.9-2.61.91.92.81.42.03.12.72.61.32.41.01.20.21.41.62.1-0.41.91.30.31.72.30.71.80.42.00.41.5-0.71.5-1.01.6-0.42.01.3
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue0.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value456251113249103-47.92001801311043213221838019322712799196220139471026757-9.6596244-6.97514993-1.212090644.41039444-27.074478.1-14.4
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax20.613.16.817.48.3-3.414.511.48.36.719.717.210.64.712.014.68.46.414.215.210.23.58.012.610.8-1.911.910.57.8-1.213.422.314.3-0.220.515.512.60.923.217.28.4-6.219.311.02.0-4.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-35.2-51.2-75.6-56.8-607.4-95.9-113.8-80.5-89.1-82.2-110.7-95.7-86.5-89.4-79.2-268.5-67.8-83.0-76.3-110.1-213.3-73.8-452.9-28.0-1.2-21.9-17.7-15.9-11.5-16.6-17.921-20.4-27.0-29.8-367.0-58.8-56.8-47.8-34.9-312.5135-108.2-11.6-59.419
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.6-2.7-4.6-4.0-48.9-6.7-8.2-5.1-5.6-5.3-6.8-5.1-5.0-5.2-4.9-17.3-4.4-5.3-5.5-7.6-15.6-5.5-35.7-5.2-0.2-4.2-3.5-2.7-2.0-2.9-3.23.2-3.1-4.3-5.1-63.1-11.6-11.2-10.7-6.3-59.131.1-28.1-2.7-14.65.4

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-408.5-129.3-131.0-148.6547118-43.2-49.6-21.5-95.0-188.7-213.7-61.9-100.5-152.1112-43.6-33.2-61.9-50.7-174.8-50.1489-17.4-20.9-28.5-48.8-28.2-30.1-41.4-33.4-29.2-24.0-44.0-28.7181-27.2-31.8-69.2-18.2-7.1-15.699-30.8-10.3-13.6
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-18.4-6.7-7.9-10.344.18.3-3.1-3.1-1.3-6.1-11.5-11.4-3.6-5.9-9.47.2-2.9-2.1-4.5-3.5-12.8-3.738.6-3.3-3.9-5.5-9.8-4.8-5.3-7.2-5.9-4.4-3.7-7.0-4.931.2-5.3-6.3-15.5-3.3-1.3-3.625.7-7.1-2.5-3.8

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

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1270-93.04443-26.4435021-73.1
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.63.7-5.63.13.5-1.93.13.21.3-4.7

Deferred Income Tax Expense Benefit

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:DeferredIncomeTaxExpenseBenefit


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-78.45141-9.5-45.6-6.5-34.75.6-13.6-3.0-9.45012-18.9-437.9-5.9-21.19.5-0.5-1.6-18.5-14.720-1.5-6.9-3.17.37.44.56.0-16.5125.31010156.012-6.54.44.284-10.9153.82.5
Percentage of DeferredIncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Depreciation Depletion And Amortization

us-gaap:DepreciationDepletionAndAmortization

us-gaap:DepreciationDepletionAndAmortization


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1421451431421361461371561511521501531501461471391371351361351321291243534343434353434343432322626252525252322212121
Percentage of DepreciationDepletionAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Inventories

us-gaap:IncreaseDecreaseInInventories

us-gaap:IncreaseDecreaseInInventories


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value561061-14.8-51.4-24.3-10.57.1-20.811-9.09.350-14.9-8.9202.52322-20.3-19.5-6.3-20.7105.56.011-22.1331.13.0-21.311-1.8-19.2-19.7119.42315-2.3-20.11.75.7-6.6-32.6
Percentage of IncreaseDecreaseInInventories100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Other Operating Capital Net

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-300000.0-1000000.03200000.0-4000000.0-4500000.02700000.0-6700000.06500000.0-1100000.0-1000000.02400000.02200000.04900000.0-3600000.05300000.0-6100000.0-800000.0-4800000.0-3000000.0-2400000.0-1200000.03100000.0-5000000.0-400000.0200000.0-300000.02600000.0100000.0-200000.00-300000.0200000.0400000.0-600000.0-500000.0300000.0-100000.0300000.04600000.00100000.0-2300000.0-400000.0-400000.0500000.0-200000.0
Percentage of IncreaseDecreaseInOtherOperatingCapitalNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value456251113249103-47.92001801311043213221838019322712799196220139471026757-9.6596244-6.97514993-1.212090644.41039444-27.074478.1-14.4
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax20.613.16.817.48.3-3.414.511.48.36.719.717.210.64.712.014.68.46.414.215.210.23.58.012.610.8-1.911.910.57.8-1.213.422.314.3-0.220.515.512.60.923.217.28.4-6.219.311.02.0-4.0

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value355243-33.0-736.8-120.1-80.0-77.244-20.04153195582048952-5.9131717-1.0-37.9-62.75.942131226372924694340342847381847421332.0311614
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax16.012.7-2.0-51.3-9.7-5.6-5.62.8-1.32.73.310.43.41.230.23.4-0.40.91.31.2-0.1-2.8-4.91.17.92.52.64.46.55.14.410.46.76.45.94.99.47.64.28.68.030.70.57.34.23.9

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value355243-736.8-120.1-80.044-20.04153195582048952-5.9131717-1.0-37.9-62.75.942131226372924694340342847381847421332.0311614
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax16.012.7-51.3-9.7-5.62.8-1.32.73.310.43.41.230.23.4-0.40.91.31.2-0.1-2.8-4.91.17.92.52.64.46.55.14.410.46.76.45.94.99.47.64.28.68.030.70.57.34.23.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Share Based Compensation

us-gaap:ShareBasedCompensation

us-gaap:ShareBasedCompensation


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-0.72.06.53.03.90.21.83.62.03.32.83.03.13.12.72.42.51.51.42.41.52.22.11.81.91.81.61.10.32.12.42.32.02.12.01.71.11.41.51.41.51.41.61.62.01.5
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-35.2-51.2-75.6-56.8-607.4-95.9-113.8-80.5-89.1-82.2-110.7-95.7-86.5-89.4-79.2-268.5-67.8-83.0-76.3-110.1-213.3-73.8-452.9-28.0-1.2-21.9-17.7-15.9-11.5-16.6-17.921-20.4-27.0-29.8-367.0-58.8-56.8-47.8-34.9-312.5135-108.2-11.6-59.419
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.6-2.7-4.6-4.0-48.9-6.7-8.2-5.1-5.6-5.3-6.8-5.1-5.0-5.2-4.9-17.3-4.4-5.3-5.5-7.6-15.6-5.5-35.7-5.2-0.2-4.2-3.5-2.7-2.0-2.9-3.23.2-3.1-4.3-5.1-63.1-11.6-11.2-10.7-6.3-59.131.1-28.1-2.7-14.65.4

Payments To Acquire Property Plant And Equipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value35517556709511380891021109886898459678378626176512827232217131820152430446569757265372521212021
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-408.5-129.3-131.0-148.6547118-43.2-49.6-21.5-95.0-188.7-213.7-61.9-100.5-152.1112-43.6-33.2-61.9-50.7-174.8-50.1489-17.4-20.9-28.5-48.8-28.2-30.1-41.4-33.4-29.2-24.0-44.0-28.7181-27.2-31.8-69.2-18.2-7.1-15.699-30.8-10.3-13.6
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-18.4-6.7-7.9-10.344.18.3-3.1-3.1-1.3-6.1-11.5-11.4-3.6-5.9-9.47.2-2.9-2.1-4.5-3.5-12.8-3.738.6-3.3-3.9-5.5-9.8-4.8-5.3-7.2-5.9-4.4-3.7-7.0-4.931.2-5.3-6.3-15.5-3.3-1.3-3.625.7-7.1-2.5-3.8

Proceeds From Issuance Of Long Term Debt

us-gaap:ProceedsFromIssuanceOfLongTermDebt

us-gaap:ProceedsFromIssuanceOfLongTermDebt


Proceeds
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-31
Value0.036549938225800250.00.0195501600.018750.00.00.0
Percentage of ProceedsFromIssuanceOfLongTermDebt0.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.00.0100.00.00.00.0

Repayments Of Long Term Debt

us-gaap:RepaymentsOfLongTermDebt

us-gaap:RepaymentsOfLongTermDebt


Repayments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-30
Value370485715166350750.16930.450122173406091301717187225917141177271.11.11.0131490.10.1120.00.011120.07.70.00.0
Percentage of RepaymentsOfLongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.00.0100.00.00.0

Payments Of Dividends

us-gaap:PaymentsOfDividends

us-gaap:PaymentsOfDividends


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value32313131313130323233333333333333333333333333331515151515151515161616161616161616161515161515
Percentage of PaymentsOfDividends100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Payments For Repurchase Of Common Stock

us-gaap:PaymentsForRepurchaseOfCommonStock us-gaap:ShareRepurchaseProgram, us-gaap:StatementClassOfStock

us-gaap:PaymentsForRepurchaseOfCommonStock

oln:A2018ShareRepurchaseProgram, us-gaap:CommonClassA


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0.00.00.00.00.00.0101081313337.79.1
Percentage of PaymentsForRepurchaseOfCommonStock0.00.00.00.00.00.0100.0100.0100.0100.0100.0100.0100.0

Debt Instrument Interest Rate Stated Percentage

us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument

us-gaap:DebtInstrumentInterestRateStatedPercentage

oln:A1000SeniorNotesDue2025


Debt
Period End2021-03-31
Value10.0
Percentage of DebtInstrumentInterestRateStatedPercentage100.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.0
Percentage of LongTermDebtAndCapitalLeaseObligations oln:A1000SeniorNotesDue20250.0

oln:A2022Notes


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value5.50.0550.0550.0550.055
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations oln:A2022Notes0.00.00.00.00.0

oln:A2023Notes


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-10-05
Value9.750.09750.09750.09750.09750.0975
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations oln:A2023Notes0.00.00.00.00.00.0

oln:A2025Notes


Debt
Period End2021-03-312020-12-312020-05-192019-12-312018-12-312017-12-312016-12-312015-10-05
Value10.010.00.0950.10.10.10.10.1
Percentage of DebtInstrumentInterestRateStatedPercentage100.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations oln:A2025Notes0.00.00.00.00.00.00.00.0

oln:A2025Notes950


Debt
Period End2020-12-31
Value9.5
Percentage of DebtInstrumentInterestRateStatedPercentage0.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.0
Percentage of LongTermDebtAndCapitalLeaseObligations oln:A2025Notes9500.0

oln:A5000MillionSeniorSecuredDelayedDrawTermLoan


Debt
Period End2020-12-31
Value4.125
Percentage of DebtInstrumentInterestRateStatedPercentage0.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.0
Percentage of LongTermDebtAndCapitalLeaseObligations oln:A5000MillionSeniorSecuredDelayedDrawTermLoan0.0

oln:A720.0millionSeniorNotesDue2023


Debt
Period End2021-01-15
Value9.75
Percentage of DebtInstrumentInterestRateStatedPercentage0.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.0
Percentage of LongTermDebtAndCapitalLeaseObligations oln:A720.0millionSeniorNotesDue20230.0

oln:VariableRateGoZoneBonds


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312011-12-312010-12-31
Value3.6250.02850.03670.03270.02470.01780.0176
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations oln:VariableRateGoZoneBonds0.00.00.00.00.00.00.0

oln:VariableRateRecoveryZoneBonds


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312011-12-312010-12-31
Value3.6250.02850.03670.03270.02470.01780.0176
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations oln:VariableRateRecoveryZoneBonds0.00.00.00.00.00.00.0

us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument, us-gaap:SubsequentEventType

oln:A720.0millionSeniorNotesDue2023, us-gaap:SubsequentEvent


Debt
Period End2020-10-15
Value9.75
Percentage of DebtInstrumentInterestRateStatedPercentage0.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.0
Percentage of LongTermDebtAndCapitalLeaseObligations oln:A720.0millionSeniorNotesDue2023 us-gaap:SubsequentEvent0.0

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

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value9127400.07210600.05864200.05342500.05734700.04720100.04133800.04114800.04060800.03764900.03849400.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value23.0624.9524.422.7219.2521.2920.1419.3318.3917.8417.53
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Liabilities

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxLiabilities


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value432419492474913999292287282255182
Percentage of DeferredTaxLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Net

us-gaap:DeferredTaxAssetsNet

us-gaap:DeferredTaxAssetsNet


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value335342189214447422251229242206204
Percentage of DeferredTaxAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Unrecognized Tax Benefits

us-gaap:UnrecognizedTaxBenefits

us-gaap:UnrecognizedTaxBenefits


Unrecognized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-31
Value40212122222122223534333333363635344338383733353535363636363434344140404040383738414141424850
Percentage of UnrecognizedTaxBenefits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Valuation Allowance

us-gaap:DeferredTaxAssetsValuationAllowance

us-gaap:DeferredTaxAssetsValuationAllowance


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value23918214712129291613212423
Percentage of DeferredTaxAssetsValuationAllowance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions

us-gaap:UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions

us-gaap:UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions


Unrecognized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-312014-09-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-312010-09-30
Value2500000.0300000.0400000.0300000.0500000.0500000.0600000.0200000.0600000.0600000.0500000.0600000.0500000.0500000.0900000.0600000.0700000.0700000.0400000.0400000.0900000.0000000000000100000.000-100000.01600000.0
Percentage of UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.00.00.00.00.00.00.00.00.0100.00.00.0100.0100.0

oln:AccountsReceivableAllowanceforCreditLossesWriteoffsNet

oln:AccountsReceivableAllowanceforCreditLossesWriteoffsNet


Accounts
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value500000.0000-2000000.0-100000.0
Percentage of AccountsReceivableAllowanceforCreditLossesWriteoffsNet100.00.00.00.0100.0100.0

oln:AmortizationofSupplyContracts

oln:AmortizationofSupplyContracts


Amortizationof
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value1717279.49.49.49.49.49.49.49.49.49.49.49.36.36.36.3
Percentage of AmortizationofSupplyContracts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

oln:DebtRedemptionPremiumAmount us-gaap:DebtInstrument

oln:DebtRedemptionPremiumAmount

oln:A2025Notes


Debt
Period End2021-03-31
Value15
Percentage of DebtRedemptionPremiumAmount100.0

oln:A720.0millionSeniorNotesDue2023


Debt
Period End2021-01-15
Value2.9
Percentage of DebtRedemptionPremiumAmount0.0

oln:A7200MillionSeniorNotesDue2023


Debt
Period End2020-10-15
Value14
Percentage of DebtRedemptionPremiumAmount0.0

oln:DebtRedemptionPremiumAmount us-gaap:DebtInstrument, us-gaap:SubsequentEventType

oln:A2025Notes, us-gaap:SubsequentEvent


Debt
Period End2021-04-14
Value9.3
Percentage of DebtRedemptionPremiumAmount0.0

oln:A720.0millionSeniorNotesDue2023, us-gaap:SubsequentEvent


Debt
Period End2020-10-15
Value14
Percentage of DebtRedemptionPremiumAmount0.0

oln:A7200MillionSeniorNotesDue2023, us-gaap:SubsequentEvent


Debt
Period End2021-01-15
Value2.9
Percentage of DebtRedemptionPremiumAmount0.0

oln:DeferredFairValueSwapLossRecognitionAcceleration us-gaap:DerivativeInstrumentRisk

oln:DeferredFairValueSwapLossRecognitionAcceleration

oln:InterestRateSwapsDesignatedAsFairValueHedges


Deferred
Period End2021-03-31
Value1100000.0
Percentage of DeferredFairValueSwapLossRecognitionAcceleration100.0

oln:DefinedContributionPlanEmployerContributionOfEligibleCompensation

oln:DefinedContributionPlanEmployerContributionOfEligibleCompensation


Defined
Period End2021-06-302021-03-312020-06-302020-03-31
Value8.68.76.88.2
Percentage of DefinedContributionPlanEmployerContributionOfEligibleCompensation100.0100.0100.0100.0

oln:EffectiveTaxRateDiscreteItemsnet

oln:EffectiveTaxRateDiscreteItemsnet


Effective
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value931.3-1.70.2-1.224-0.60.80.51.50.86.7100.5
Percentage of EffectiveTaxRateDiscreteItemsnet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

oln:EffectiveTaxRateDiscreteItemsnetPercent

oln:EffectiveTaxRateDiscreteItemsnetPercent


Effective
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value22.420.8-2.314.025.00.256-0.2540.5390.2210.230.0060.2560.2310.269-0.0770.2380.2520.279
Percentage of EffectiveTaxRateDiscreteItemsnetPercent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

oln:Goodwillimpairmenttaxbenefit

oln:Goodwillimpairmenttaxbenefit


Goodwillimpairmenttaxbenefit
Period End2020-09-30
Value10
Percentage of Goodwillimpairmenttaxbenefit100.0

oln:IncreaseDecreaseinCapitalExpendituresIncurredbutNotYetPaid

oln:IncreaseDecreaseinCapitalExpendituresIncurredbutNotYetPaid


Increase
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-2.8287.61325-1.1-14.7-10.520-32.59.8-14.912-24.50.93.220
Percentage of IncreaseDecreaseinCapitalExpendituresIncurredbutNotYetPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

oln:LongtermOtherSupplyContractPayments

oln:LongtermOtherSupplyContractPayments


Longterm
Period End2020-09-30
Value0.0
Percentage of LongtermOtherSupplyContractPayments0.0

oln:OtherComprehensiveIncomeLossNetGainLossRecognizedBeforeTax

oln:OtherComprehensiveIncomeLossNetGainLossRecognizedBeforeTax


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value441104338-44.1-28.0-18.9-14.9-4.6-26.51419245.2
Percentage of OtherComprehensiveIncomeLossNetGainLossRecognizedBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

oln:OtherComprehensiveIncomeLossReclassificationAdjustmentBeforeTax

oln:OtherComprehensiveIncomeLossReclassificationAdjustmentBeforeTax


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value-6.7-99.111202316139.67.06.47.15.64.56.5
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

oln:OtherCorporateAndUnallocatedCosts us-gaap:ConsolidationItems

oln:OtherCorporateAndUnallocatedCosts

us-gaap:CorporateNonSegment


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value30334337314335394245
Percentage of OtherCorporateAndUnallocatedCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

oln:Paymentsreceivedfromcustomersonsoldaccounts

oln:Paymentsreceivedfromcustomersonsoldaccounts


Paymentsreceivedfromcustomersonsoldaccounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value2322182831262022562502473851701744021261-416.54364071126-370.7
Percentage of Paymentsreceivedfromcustomersonsoldaccounts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

oln:PensionIncomeExpense

oln:PensionIncomeExpense


Pension
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value6.47.32.83.12.82.42.32.62.03.93.43.93.86.66.67.06.7-5.945-6.8-6.1-6.6-3.2-6.1-6.3-6.0
Percentage of PensionIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

oln:PerformanceShareAwardNetIncomeFV oln:ModelType

oln:PerformanceShareAwardNetIncomeFV

oln:MonteCarloSimulationModel


Performance
Period End2021-06-302021-03-31
Value028.99
Percentage of PerformanceShareAwardNetIncomeFV0.0100.0

oln:PerformanceShareAwardTotalShareholderReturnFV oln:ModelType

oln:PerformanceShareAwardTotalShareholderReturnFV

oln:MonteCarloSimulationModel


Performance
Period End2021-06-302021-03-31
Value039.96
Percentage of PerformanceShareAwardTotalShareholderReturnFV0.0100.0

oln:PerformanceShareAwardsSharesGranted oln:ModelType

oln:PerformanceShareAwardsSharesGranted

oln:MonteCarloSimulationModel


Performance
Period End2021-06-302021-03-31
Value0248700.0
Percentage of PerformanceShareAwardsSharesGranted0.0100.0

oln:PriorYearTaxPositionIRSAuditResolution

oln:PriorYearTaxPositionIRSAuditResolution


Prior
Period End2021-06-30
Value3800000.0
Percentage of PriorYearTaxPositionIRSAuditResolution100.0

oln:QuarterlyRequiredPrincipalPaymentPercentAfter2023

oln:QuarterlyRequiredPrincipalPaymentPercentAfter2023


Quarterly
Period End2021-06-302021-03-31
Value02.5
Percentage of QuarterlyRequiredPrincipalPaymentPercentAfter20230.0100.0

oln:QuarterlyRequiredPrincipalPaymentPercentIn2023

oln:QuarterlyRequiredPrincipalPaymentPercentIn2023


Quarterly
Period End2021-06-302021-03-31
Value01.875
Percentage of QuarterlyRequiredPrincipalPaymentPercentIn20230.0100.0

oln:QuarterlyRequiredPrincipalPaymentPercentThrough2022

oln:QuarterlyRequiredPrincipalPaymentPercentThrough2022


Quarterly
Period End2021-06-302021-03-31
Value01.25
Percentage of QuarterlyRequiredPrincipalPaymentPercentThrough20220.0100.0

oln:ShareBasedCompensationArrangementByShareBasedPaymentAwardMarkToMarketAdjustment

oln:ShareBasedCompensationArrangementByShareBasedPaymentAwardMarkToMarketAdjustment


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value6.08.17.30.6-0.1-3.0-0.8-1.4-0.91.3-4.4-1.4-1.3-3.00.62.6-1.32.60.90.7-2.0-0.11.00.10.9-0.6
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardMarkToMarketAdjustment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

oln:ShareBasedCompensationArrangementByShareBasedPaymentAwardTotalExpense

oln:ShareBasedCompensationArrangementByShareBasedPaymentAwardTotalExpense


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value1312154.04.2-1.00.12.8-2.26.9-0.12.73.13.54.85.62.99.92.82.8-0.12.63.02.33.13.1
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardTotalExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

oln:ShareBasedCompensationArrangementsExpectedVolatilityRateOfPeerCompanies oln:ModelType

oln:ShareBasedCompensationArrangementsExpectedVolatilityRateOfPeerCompanies

oln:MonteCarloSimulationModel


Share
Period End2021-06-302021-03-31
Value050.0
Percentage of ShareBasedCompensationArrangementsExpectedVolatilityRateOfPeerCompanies0.0100.0

oln:ShareBasedCompensationAverageCorrelationCoefficientOfPeerCompanies oln:ModelType

oln:ShareBasedCompensationAverageCorrelationCoefficientOfPeerCompanies

oln:MonteCarloSimulationModel


Share
Period End2021-06-302021-03-31
Value00.5
Percentage of ShareBasedCompensationAverageCorrelationCoefficientOfPeerCompanies0.0100.0

oln:TotalEnvironmentalExpenseIncome

oln:TotalEnvironmentalExpenseIncome


Total
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302018-09-302018-06-30
Value4.70.3122.82.6-0.817-110.84.4
Percentage of TotalEnvironmentalExpenseIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0

oln:ValuationAllowanceRelease

oln:ValuationAllowanceRelease


Valuation
Period End2021-06-30
Value103
Percentage of ValuationAllowanceRelease100.0

oln:WriteOffOfDeferredDebtIssuanceCostsAndFairValueSwapLosses

oln:WriteOffOfDeferredDebtIssuanceCostsAndFairValueSwapLosses


Write
Period End2021-06-30
Value3100000.0
Percentage of WriteOffOfDeferredDebtIssuanceCostsAndFairValueSwapLosses100.0

oln:WriteOffOfUnamortizedDeferredDebtIssuanceCostsAndFairValueSwapLosses

oln:WriteOffOfUnamortizedDeferredDebtIssuanceCostsAndFairValueSwapLosses


Write
Period End2021-03-31
Value4800000.0
Percentage of WriteOffOfUnamortizedDeferredDebtIssuanceCostsAndFairValueSwapLosses100.0

us-gaap:AccretionExpense

us-gaap:AccretionExpense


Accretion
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.00.00.04.04.44.44.24.04.14.04.03.9
Percentage of AccretionExpense0.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths us-gaap:DerivativeInstrumentRisk

us-gaap:CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths

us-gaap:CommodityContract


Cash
Period End2021-06-302021-03-312020-12-312019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value12213.200000000000002-18.44.6-2.4-1.00.01.11.10.5-2.52.64.50.4
Percentage of CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStockDividendsPerShareCashPaid

us-gaap:CommonStockDividendsPerShareCashPaid


Common
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.2
Percentage of CommonStockDividendsPerShareCashPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanActuarialGainLoss us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanActuarialGainLoss

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value-0.6-0.7-2.5999999999999996-0.3-0.5-0.7-4.6-0.5-0.5-0.63.9-0.6-0.6-0.61.5-0.6-0.7-0.66.9-0.2-0.8
Percentage of DefinedBenefitPlanActuarialGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value-13.2-13.1-11.2-11.1-11.2-6.8-6.6-6.8-8.6-8.5-8.8-6.8-6.8-6.6-5.2-5.0
Percentage of DefinedBenefitPlanActuarialGainLoss2200.01871.43733.32220.01600.01360.01320.01133.31433.31416.71466.71133.3971.41100.02600.0625.0

us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value100000.00000-300000.0-600000.0-700000.0-600000.0-600000.0-2000000.00
Percentage of DefinedBenefitPlanAmortizationOfPriorServiceCostCredit100.00.00.00.00.0100.0100.0100.0100.0100.0100.00.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value-200000.0-100000.0000000-100000.0100000.0
Percentage of DefinedBenefitPlanAmortizationOfPriorServiceCostCredit-200.00.00.00.00.0-0.0-0.0-0.05.00.0

us-gaap:DefinedBenefitPlanContributionsByEmployer us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanTaxStatus

us-gaap:DefinedBenefitPlanContributionsByEmployer

us-gaap:ForeignPlan, us-gaap:QualifiedPlan


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.50.10.80.11.10.11.70.00.60.11.30.20.60.5
Percentage of DefinedBenefitPlanContributionsByEmployer100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value35363535353535353636363939373939
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanInterestCost us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanInterestCost

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value0.30.30.40.30.30.40.40.40.50.40.40.30.40.40.40.30.40.40.40.30.4
Percentage of DefinedBenefitPlanInterestCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value12121818182323232121212121212121
Percentage of DefinedBenefitPlanInterestCost4266.74266.76266.76266.74675.05925.04740.05900.07166.75425.05400.07266.75375.05425.07266.75450.0

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value1.31.41.50.81.21.41.21.11.31.31.31.21.41.30.50.60.70.70.6-1.31.6
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value-6.4-7.3-2.7-3.0-2.7-2.3-2.5-1.8-3.1-3.9-3.7-6.3-6.9-6.5-9.3-9.5
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost-492.3-521.4-337.5-250.0-192.9-209.1-192.3-138.5-258.3-278.6-284.6-1050.0-985.7-928.6715.4-593.8

us-gaap:DefinedBenefitPlanServiceCost us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanServiceCost

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value0.30.40.30.20.40.30.30.20.30.30.30.30.40.30.20.30.30.30.30.20.4
Percentage of DefinedBenefitPlanServiceCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value2.83.02.82.73.02.72.73.13.32.52.74.34.12.43.32.7
Percentage of DefinedBenefitPlanServiceCost933.3750.01400.0675.01000.01350.0900.01033.31100.0625.0900.01433.31366.7800.01650.0675.0

us-gaap:DefinedContributionPlanCostRecognized

us-gaap:DefinedContributionPlanCostRecognized


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value3.73.21.40.80.70.83.94.04.03.93.63.93.73.72.83.02.52.7-9.66.08.26.6-6.04.04.64.3-6.94.24.34.1-6.64.04.03.8-7.14.24.53.6-5.73.53.83.6-8.53.33.2
Percentage of DefinedContributionPlanCostRecognized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedContributionPlanEmployerDiscretionaryContributionAmount

us-gaap:DefinedContributionPlanEmployerDiscretionaryContributionAmount


Defined
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value6.56.88.26.76.96.99.46.66.76.78.66.67.06.06.67.77.16.76.6
Percentage of DefinedContributionPlanEmployerDiscretionaryContributionAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedContributionPlanEmployerMatchingContributionPercentOfMatch us-gaap:Range

us-gaap:DefinedContributionPlanEmployerMatchingContributionPercentOfMatch

srt:Maximum


Defined
Period End2021-01-01
Value3.0
Percentage of DefinedContributionPlanEmployerMatchingContributionPercentOfMatch100.0

us-gaap:DefinedContributionPlanEmployerMatchingContributionPercentOfMatch us-gaap:Range, us-gaap:SubsequentEventType

srt:Maximum, us-gaap:SubsequentEvent


Defined
Period End2021-01-01
Value3.0
Percentage of DefinedContributionPlanEmployerMatchingContributionPercentOfMatch100.0

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

us-gaap:DerivativeGainLossOnDerivativeNet

us-gaap:InterestRateSwap, us-gaap:FairValueHedging, us-gaap:InterestExpense


Derivative
Period End2021-06-302021-03-312020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value-0.6-1.20.00.0-0.9-1.0-0.7-0.6-0.50.20.50.81.20.71.2
Percentage of DerivativeGainLossOnDerivativeNet100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:ForeignExchangeContract, us-gaap:Nondesignated, us-gaap:SellingGeneralAndAdministrativeExpenses


Derivative
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-30
Value-6.2-2.09.60.66.5-1.4-0.6-2.40.3-1.10.5-0.25.0-4.5-2.3-4.2-3.10.0
Percentage of DerivativeGainLossOnDerivativeNet1033.3166.70.00.00.0155.660.0342.9-50.0220.0250.0-40.0625.0-375.0-328.6-350.00.00.0

us-gaap:DerivativeGainLossOnDerivativeNet us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation

oln:InterestRateSwapsDesignatedAsFairValueHedges, us-gaap:InterestExpense


Derivative
Period End2021-03-312020-03-31
Value1.20.1
Percentage of DerivativeGainLossOnDerivativeNet-100.00.0

us-gaap:DividendsCommonStockCash

us-gaap:DividendsCommonStockCash


Dividends
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value313131323233333333333333333333333333331515151515151515161616161648-16.0112-16.0-16.1-15.9-15.8-16.0-15.7-15.8
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsCommonStockCash us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Dividends
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value3231313131323233333333333333333333333333331515151515151515161616161648-16.0112-16.0-16.1-15.9-15.8-16.0-15.7-15.8
Percentage of DividendsCommonStockCash0.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EffectOfExchangeRateOnCashAndCashEquivalents

us-gaap:EffectOfExchangeRateOnCashAndCashEquivalents


Effect
Period End2021-06-302021-03-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value100000.0-400000.0500000.0-800000.0-200000.0100000.00-200000.00-100000.0100000.0-300000.0100000.0100000.0-100000.0300000.0-400000.0300000.0-100000.0500000.0-100000.0000
Percentage of EffectOfExchangeRateOnCashAndCashEquivalents100.0100.0100.0100.0100.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:EnvironmentalCostsRecognizedRecoveryCreditedToExpense

us-gaap:EnvironmentalCostsRecognizedRecoveryCreditedToExpense


Environmental
Period End2021-06-302021-03-312020-06-302019-09-302019-06-302018-09-302018-06-30
Value0.02.20.00.04.81100.0
Percentage of EnvironmentalCostsRecognizedRecoveryCreditedToExpense0.0100.00.00.0100.0100.00.0

us-gaap:EnvironmentalRemediationExpense

us-gaap:EnvironmentalRemediationExpense


Environmental
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value4.72.53.0122.82.62.3-0.8221.81.4-0.84.42.34.11.81.82.63.70.42.42.72.67.35.10.73.31.61.23.55.32.02.41.81.63.60.32.95.44.0-1.12.01.68.62.7
Percentage of EnvironmentalRemediationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EnvironmentalRemediationExpense us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Environmental
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value4.70.3122.82.6-0.8171.8-110.84.4
Percentage of EnvironmentalRemediationExpense100.012.0100.0100.0100.0100.078.2100.013850.0100.0

us-gaap:GainLossOnSaleOfAccountsReceivable

us-gaap:GainLossOnSaleOfAccountsReceivable


Gain
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value300000.0400000.0300000.0200000.0400000.0600000.0600000.0800000.01000000.0500000.0400000.01100000.01600000.01200000.0800000.01400000.0800000.0700000.0400000.0500000.0
Percentage of GainLossOnSaleOfAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GoodwillForeignCurrencyTranslationGainLoss

us-gaap:GoodwillForeignCurrencyTranslationGainLoss


Goodwill
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value-100000.0100000.0200000.0100000.0-100000.0600000.0-500000.0100000.0-100000.00-100000.0-600000.0300000.0200000.0300000.0500000.01000000.0-1400000.00
Percentage of GoodwillForeignCurrencyTranslationGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:GoodwillForeignCurrencyTranslationGainLoss us-gaap:StatementBusinessSegments

oln:ChlorAlkaliProductsandVinylsSegment


Goodwill
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-100000.00200000.0100000.0-100000.0500000.0-400000.0100000.0-100000.00-100000.0-400000.0200000.0200000.0200000.0400000.0800000.0
Percentage of GoodwillForeignCurrencyTranslationGainLoss100.00.0100.0100.0100.083.380.0100.0100.00.0100.066.766.7100.066.780.080.0

us-gaap:GoodwillImpairmentLoss

us-gaap:GoodwillImpairmentLoss


Goodwill
Period End2020-12-312020-09-30
Value0.0699
Percentage of GoodwillImpairmentLoss0.0100.0

us-gaap:GoodwillImpairmentLoss us-gaap:StatementBusinessSegments

oln:ChlorAlkaliProductsandVinylsSegment


Goodwill
Period End2020-12-31
Value0.0
Percentage of GoodwillImpairmentLoss0.0

oln:EpoxySegment


Goodwill
Period End2020-12-31
Value0.0
Percentage of GoodwillImpairmentLoss0.0

us-gaap:IncreaseDecreaseInAccountsAndOtherReceivables

us-gaap:IncreaseDecreaseInAccountsAndOtherReceivables


Increase
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value672077.1-130.2666.63436
Percentage of IncreaseDecreaseInAccountsAndOtherReceivables100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value146-3.396127-67.2-7.7-25.21616-17.9-124.6841.0257.1-6.74356412.942-99.7174160.6-6.3-26.5-20.221-13.2-15.1-6.243-20.9-15.7229.0-16.24.0-13.7213.43.74.7-3.18.8
Percentage of IncreaseDecreaseInAccountsPayableAndAccruedLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInIncomeTaxesReceivable

us-gaap:IncreaseDecreaseInIncomeTaxesReceivable


Increase
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value27-4.6-1.8-2.518-13.4-6.5209.9-7.4-11.70.6-6.01.0-7.3-3.2-0.1-18.5-1.815-5.644-2.5-21.9-7.4171.67.01.6-3.0-3.910-4.3-11.86.16.8-1.2-8.51.91.40.26.43.23.60.1
Percentage of IncreaseDecreaseInIncomeTaxesReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherNoncurrentLiabilities

us-gaap:IncreaseDecreaseInOtherNoncurrentLiabilities


Increase
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-30
Value21116.5-3.6-2.0-16.5236.4-0.8-3.30.3-4.4-13.84.6-9.11.9-0.3-7.1-0.72.4-14.9-0.3-4.8-9.9-2.61.9-5.7-6.82.52.5
Percentage of IncreaseDecreaseInOtherNoncurrentLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInOtherOperatingAssets


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value10-8.2144.7-0.60.0-3.52.55.2-2.90.60.54.6-3.11.9-1.9-2.7-3.14.8-1.63.2-2.1-11.9-6.9-17.5-1.3-0.1-3.1-0.3-1.71.2-0.3-1.6-0.64.4-0.4-2.8-1.50.40.6-0.2-0.63.6-1.80.3-0.1
Percentage of IncreaseDecreaseInOtherOperatingAssets100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInPrepaidExpense

us-gaap:IncreaseDecreaseInPrepaidExpense


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.2-12.217-11.1-14.432-2.5-2.5-14.8124.3-9.6-11.61615-13.4-7.2171.8-7.7-8.5-6.527-3.1-1.37.1-0.82.4-4.41.11.7-3.0-2.32.90.8-1.9-2.73.9-0.95.3-2.9-2.1-1.83.41.1-4.4
Percentage of IncreaseDecreaseInPrepaidExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InvestmentIncomeInterest

us-gaap:InvestmentIncomeInterest


Investment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0100000.0100000.0100000.0200000.0100000.0300000.0200000.0300000.0200000.0500000.0300000.0400000.0400000.0800000.0400000.0400000.0200000.02100000.0500000.0500000.0300000.0200000.0300000.0300000.0300000.0400000.0200000.0400000.0300000.0300000.0100000.0100000.0100000.0300000.0200000.0300000.0200000.0500000.0200000.0300000.0200000.0300000.0300000.0200000.0200000.0
Percentage of InvestmentIncomeInterest0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent

us-gaap:NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-8200000.0-9300000.0-4500000.0-4900000.0-4900000.0-4600000.0-4100000.0-4100000.0-4200000.0-3900000.0-5500000.0-5400000.0-5400000.0-5400000.0
Percentage of NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value2.4-11.411178.2-9.011-15.73.3-8.3-6.5-2.0-26.1120.09.8156.0-21.34.6-10.815-7.0-1.70.3-1.4-1.3-1.50.30.7-0.80.4-2.30.10.00.8-0.80.3-0.90.01.01.3
Percentage of OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.00.0100.0100.0

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossBeforeReclassificationAndTax

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossBeforeReclassificationAndTax


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312012-03-312011-12-312011-03-312010-12-31
Value2.4-11.4178.2-9.0-15.73.3-8.3-2.0-26.11216288.36.6-14.324-1.70.3-1.4-1.50.30.70.3-0.91.31.5
Percentage of OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossBeforeReclassificationAndTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax

us-gaap:OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value10108.88.99.09.25.45.95.35.77.37.58.15.44.34.34.53.92.72.33.53.8264.95.35.14.03.54.04.05.04.95.25.2
Percentage of OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-20.4-112.80.19.3119.06.32.2-2.2-2.7-2.3
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-5100000.0-2200000.0-6300000.0-9200000.05600000.0800000.03800000.01100000.01200000.0700000.0100000.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value411222629-35.1-12.3-22.2-6.6-2.6-0.42.1
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship

us-gaap:CommodityContract, us-gaap:CashFlowHedging


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value411222629-35.1-12.4-21.5-6.2-2.9-1.5-1.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax100.0100.0100.0100.0100.0100.896.893.9111.5375.0-47.6

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship

us-gaap:CashFlowHedging


Other
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value2629-35.1-12.3-22.2-6.6-2.6-0.42.1
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value296.2384547-17.7-130.7-12.3-3.5-5.9-79.71.9-20.417-14.615167.9-43.312-9.122-59.31.15.43.4-86.70.07.11.6-2.09.4-1.40.2-98.7130.57.8-23.6-11.01.21.0
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value296.24547-17.7-12.3-3.5-5.9-79.71.9-20.417-14.615167.9-43.312-9.122-59.31.15.43.4-86.70.07.11.6-2.09.4-1.40.2-98.7130.57.8-23.6-11.01.21.0
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-31
Value-10.7-10.6-23.6-8.9-9.0-9.2144-5.9-5.3-5.767-7.5-8.1-5.417-4.3-4.5-3.937-5.4-3.5-3.852-4.9-5.3-5.182-3.5-4.0-4.04.9-5.25.23.3-4.33.2
Percentage of OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value3.03.12.62.62.71.41.81.71.71.04.02.5-2.3-2.7-3.0-2.4-2.3-3.1-3.1-3.552-2.0-2.8-2.5-17.93.23.23.3492.22.62.0
Percentage of OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-31
Value13131111117.37.17.49.29.19.46.86.86.63.35.96.18.08.48.65.56.86.5
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossTax

us-gaap:OtherComprehensiveIncomeLossTax


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-31
Value-8.1-5.3-8.9-11.82.9-0.62.0-0.6-0.5-0.3-3.9-9.4123.86.6-2.2121.82.93.30.74.60.5
Percentage of OtherComprehensiveIncomeLossTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherOperatingIncomeExpenseNet

us-gaap:OtherOperatingIncomeExpenseNet


Other
Period End2021-06-302020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-30
Value0.5-0.20.10.00.10.10.10.10.0-1.70.08.13.40.00.3-0.40.1-0.2-0.2103.6-0.142-0.20.70.00.9-0.1-0.41.50.21.1-0.10.54.30.2
Percentage of OtherOperatingIncomeExpenseNet100.0100.0100.00.0100.0100.0100.0100.00.0100.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentOfFinancingAndStockIssuanceCosts

us-gaap:PaymentOfFinancingAndStockIssuanceCosts


Payment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value0.03.10.40.39.20.42.2140.00.00.00.00.08.50.00.00.0110.20.80.00.0251.04.414
Percentage of PaymentOfFinancingAndStockIssuanceCosts0.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.00.0100.00.00.00.0100.0100.0100.00.00.0100.0100.0100.0100.0

us-gaap:PaymentsForRestructuring

us-gaap:PaymentsForRestructuring


Payments
Period End2021-06-30
Value4.5
Percentage of PaymentsForRestructuring100.0

us-gaap:PaymentsOfDebtExtinguishmentCosts

us-gaap:PaymentsOfDebtExtinguishmentCosts


Payments
Period End2021-06-30
Value12
Percentage of PaymentsOfDebtExtinguishmentCosts100.0

us-gaap:PensionContributions

us-gaap:PensionContributions


Pension
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.50.10.80.11.10.11.7120.60.11.30.20.60.50.50.30.80.10.26.40.20.50.40.20.10.20.20.20.20.20.30.20.30.20.30.20.20.21.6-0.2-0.3-0.2-2.5-2.4-2.5-2.4
Percentage of PensionContributions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PriorPeriodReclassificationAdjustment

us-gaap:PriorPeriodReclassificationAdjustment


Prior
Period End2021-03-31
Value18
Percentage of PriorPeriodReclassificationAdjustment100.0

us-gaap:ProceedsFromIssuanceOfDebt us-gaap:DebtInstrument

us-gaap:ProceedsFromIssuanceOfDebt

oln:A3150MillionSeniorSecuredDelayedDrawTermLoan


Proceeds
Period End2021-03-30
Value315
Percentage of ProceedsFromIssuanceOfDebt100.0

oln:A5000MillionSeniorSecuredDelayedDrawTermLoan


Proceeds
Period End2020-10-15
Value500
Percentage of ProceedsFromIssuanceOfDebt0.0

us-gaap:ProceedsFromSaleAndCollectionOfReceivables

us-gaap:ProceedsFromSaleAndCollectionOfReceivables


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value17531223915719526220525638713417234843841343144638838929620926
Percentage of ProceedsFromSaleAndCollectionOfReceivables100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromStockOptionsExercised

us-gaap:ProceedsFromStockOptionsExercised


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value24251.40.00.00.50.20.00.11.40.21.01.21.0112.77.08.80.10.20.20.00.00.10.12.00.11.11.83.62.00.62.04.20.00.80.20.31.00.07.00.30.6-0.12.40.0
Percentage of ProceedsFromStockOptionsExercised100.0100.0100.00.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.00.0

us-gaap:ProvisionForLoanLeaseAndOtherLosses

us-gaap:ProvisionForLoanLeaseAndOtherLosses


Provision
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value00500000.0200000.00200000.0400000.0500000.0100000.0300000.0200000.01100000.01000000.0-800000.0700000.01400000.0900000.01400000.0800000.01400000.05600000.0-200000.0-400000.0200000.0-300000.0-200000.0400000.0300000.0-200000.0-200000.0-100000.0500000.0100000.0-400000.0600000.0400000.0
Percentage of ProvisionForLoanLeaseAndOtherLosses0.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax

us-gaap:CommodityContract, us-gaap:CashFlowHedging, us-gaap:CostOfSales


Reclassification
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value20112-0.1-9.3-11.6-10.8-7.5-3.5-0.30.61.0
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship

us-gaap:CashFlowHedging


Reclassification
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-0.1-9.3-11.6-9.0-6.3-2.22.22.72.3
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax100.0100.0100.083.384.062.9-733.3450.0230.0

us-gaap:RepaymentsOfDebt us-gaap:DebtInstrument

us-gaap:RepaymentsOfDebt

oln:A2023Notes


Repayments
Period End2020-10-15
Value600
Percentage of RepaymentsOfDebt100.0

oln:A2025Notes


Repayments
Period End2021-03-31
Value315
Percentage of RepaymentsOfDebt0.0

oln:A720.0millionSeniorNotesDue2023


Repayments
Period End2021-01-15
Value120
Percentage of RepaymentsOfDebt0.0

us-gaap:RepaymentsOfDebt us-gaap:DebtInstrument, us-gaap:SubsequentEventType

oln:A2025Notes, us-gaap:SubsequentEvent


Repayments
Period End2021-04-14
Value185
Percentage of RepaymentsOfDebt0.0

oln:A720.0millionSeniorNotesDue2023, us-gaap:SubsequentEvent


Repayments
Period End2020-10-15
Value600
Percentage of RepaymentsOfDebt100.0

oln:A7200MillionSeniorNotesDue2023, us-gaap:SubsequentEvent


Repayments
Period End2021-01-15
Value120
Percentage of RepaymentsOfDebt0.0

us-gaap:RestructuringAndRelatedCostIncurredCost

us-gaap:RestructuringAndRelatedCostIncurredCost


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value4.92.83.31.42.11.8655.96.13.77.53.94.62.8284.65.66.55.81011791.41.34.93.35.71.41.71.42.02.81.92.511-1.4-1.4-1.78.9-1.5
Percentage of RestructuringAndRelatedCostIncurredCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestructuringAndRelatedCostIncurredCost us-gaap:RestructuringCostAndReserve

oln:FacilityExitCostsAssetRetirementObligations


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312012-03-312011-12-312011-09-30
Value3.42.31.21.01.71.54.55.33.12.43.42.83.61.54.72.22.54.1-0.21.5-0.4
Percentage of RestructuringAndRelatedCostIncurredCost69.482.136.471.481.083.36.889.850.864.945.371.878.353.616.547.844.663.111.816.926.7

us-gaap:ContractTermination


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value0.60.11.80.40.40.22.30.50.40.61.30.30.50.8212.00.91.72.64.31.20.10.10.02.80.00.00.00.00.00.00.00.00.00.7-0.20.00.00.40.0
Percentage of RestructuringAndRelatedCostIncurredCost12.23.654.528.619.011.13.58.56.616.217.37.710.928.676.143.516.126.244.840.210.70.17.10.057.10.00.00.00.00.00.00.00.00.06.214.3-0.0-0.04.5-0.0

us-gaap:EmployeeSeverance


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value0.90.40.30.00.00.10.20.12.60.70.20.80.50.50.60.42.10.51.41.31.91.70.81.01.42.81.40.70.60.60.91.01.00.83.4-0.2-0.6-0.71.3-0.1
Percentage of RestructuringAndRelatedCostIncurredCost18.414.39.10.00.05.60.31.742.618.92.720.510.917.92.18.737.57.724.112.117.02.157.176.928.684.824.650.035.342.945.035.752.632.030.414.342.941.214.66.7

us-gaap:RestructuringCharges

us-gaap:RestructuringCharges


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value146.94.31.31.71.7634.93.84.08.23.36.44.0119.28.58.2475.28.2920.50.30.71.2111.22.31.01.41.60.22.32.52.31.81.94.14.12.40.1340.00.00.0
Percentage of RestructuringCharges100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:RestructuringReserveSettledWithoutCash2

us-gaap:RestructuringReserveSettledWithoutCash2


Restructuring
Period End2021-06-30
Value0.4
Percentage of RestructuringReserveSettledWithoutCash2100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate


Share
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value04.55400.0460000.03050000.02430000.02690000.06090000.02920000.03130000.03440000.03650000.043200
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate0.0100.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate oln:ModelType

oln:BlackSholesOptionPricingModel


Share
Period End2021-06-302021-03-31
Value02.76
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate0.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate


Share
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value035.6400.360000.340000.320000.340000.320000.340000.420000.430000.430000.4200
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate0.0100.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate oln:ModelType

oln:BlackSholesOptionPricingModel


Share
Period End2021-06-302021-03-31
Value044.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate0.00.0

oln:MonteCarloSimulationModel


Share
Period End2021-06-302021-03-31
Value055.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate0.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate


Share
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value01.425600.01440000.02510000.02720000.02060000.01350000.01690000.02130000.01350000.01360000.030500
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate0.0100.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate oln:ModelType

oln:BlackSholesOptionPricingModel


Share
Period End2021-06-302021-03-31
Value00.94
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate0.00.0

oln:MonteCarloSimulationModel


Share
Period End2021-06-302021-03-31
Value00.23
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate0.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod


Share
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-0.00260.00.02.66570.00230.00.01.57590.00.00.00.9270.0490.00.01.5720.00.00.01.67040.00.00.00.776750.0352-588999.4110.0589000-620999.3790.00.0621000-480249.519750.04802490.480250.00.00.00.5750.00.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod100.00.00.0100.0100.00.00.0100.00.00.00.0100.0100.00.00.0100.00.00.00.0100.00.00.00.0100.0100.0100.00.0100.0100.00.00.0100.0100.00.0100.0100.00.00.00.0100.00.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod oln:ModelType

oln:BlackSholesOptionPricingModel


Share
Period End2021-06-302021-03-31
Value0.00771.087
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod0.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue


Share
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value0003.640006.760008.890007.780001.90006.80.04008.30007.050006.550005.4800
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue0.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.0100.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue oln:ModelType

oln:BlackSholesOptionPricingModel


Share
Period End2021-06-302021-03-31
Value09.91
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue0.00.0

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice


Share
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value00017.3300026.2600032.940.070029.7500013.1400027.40.120025.5700023.28
Percentage of ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice0.00.00.0100.00.00.00.0100.00.00.00.0100.0100.00.00.0100.00.00.00.0100.00.00.00.0100.0100.00.00.0100.00.00.00.0100.0

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice oln:ModelType

oln:BlackSholesOptionPricingModel


Share
Period End2021-06-302021-03-31
Value028.99
Percentage of ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice0.00.0

us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised

us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value1200000.01200000.0000100000.0000100000.000100000.0100000.0700000.0100000.0400000.0500000.0200000.00000100000.0100000.0100000.0100000.0200000.0100000.0100000.00300000.00100000.0008247.0500000.00.500200000.0
Percentage of StockIssuedDuringPeriodSharesStockOptionsExercised100.0100.00.00.00.0100.00.00.00.0100.00.00.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.00.00.0100.0100.0100.00.00.0100.0

us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value1200000.01400000.0300000.02600000.01600000.0900000.0300000.0500000.0900000.0100000.0500000.0-2600000.01100000.00600000.0-3600000.02100000.0-200000.0900000.0100000.02400000.0-100000.0-200000.0-3300000.02600000.0300000.0-1000000.001700000.0300000.01000000.0
Percentage of StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0

us-gaap:CommonStock


Stock
Period End2021-06-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value100000.0100000.0100000.0200000.00100000.0100000.00000000-200000.0100000.00100000.00100000.000-100000.0100000.0000100000.0100000.00
Percentage of StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures8.333.33.812.50.033.320.00.00.00.0-0.00.00.00.05.64.8-0.011.10.04.2-0.0-0.03.03.80.0-0.00.05.933.30.0

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value24251.4-0.20.00.70.20.00.11.40.21.01.21.0132.77.08.83.70.20.00.00.32.83.51.32.05.32.10.82.14.70.00.90.20.30.00.09.00.30.60.0
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised100.0100.0100.0100.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.00.00.0100.0100.0100.00.0

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value2324-0.20.70.00.11.30.21.01.10.9132.66.68.33.40.20.00.00.32.73.41.21.95.12.00.72.14.40.00.80.20.30.00.08.50.30.60.0
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised95.195.30.0100.00.0100.092.9100.0100.091.790.095.096.394.394.391.9100.00.00.0100.096.497.192.395.096.295.287.5100.093.60.088.9100.0100.00.00.094.4100.0100.00.0

us-gaap:CommonStock


Stock
Period End2021-06-302021-03-312020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value1.21.20.00.00.00.10.00.00.10.10.70.10.40.50.30.00.00.00.00.10.10.10.10.20.10.10.00.30.00.10.00.00.00.00.50.00.00.0
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised4.94.70.00.00.07.10.00.08.310.05.03.75.75.78.10.00.00.00.03.62.97.75.03.84.812.50.06.40.011.10.00.00.00.05.60.00.00.0

us-gaap:StockRepurchasedAndRetiredDuringPeriodShares us-gaap:ShareRepurchaseProgram, us-gaap:StatementClassOfStock

us-gaap:StockRepurchasedAndRetiredDuringPeriodShares

oln:A2018ShareRepurchaseProgram, us-gaap:CommonClassA


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0.00.00.00.00.02.04.80.60.61.60.20.3
Percentage of StockRepurchasedAndRetiredDuringPeriodShares0.00.00.00.00.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions

us-gaap:UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions


Unrecognized
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-312013-09-302012-12-312012-09-302011-12-312011-09-302010-12-312010-09-30
Value0.01.70.01.80.0140.00.00.30.54.10.00.00.08.50.70.00.03.4-1.60.00.00.00.00.10.2-8.38.30.8-0.10.00.0-0.60.0
Percentage of UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions0.0100.00.0100.00.0100.00.00.0100.0100.0100.00.00.00.0100.0100.00.00.0100.0100.00.00.00.00.0100.0100.0100.0100.0100.0100.00.00.0100.00.0

us-gaap:UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions

us-gaap:UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions


Unrecognized
Period End2020-12-312019-12-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-312014-09-302013-12-312013-09-302012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-1.9-0.10.30.00.00.00.50.00.04.90.00.15.70.00.20.00.00.01.32.20.20.12.70.1-0.10.00.20.00.00.0
Percentage of UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions100.0100.0100.00.00.00.0100.00.00.0100.00.0100.0100.00.0100.00.00.00.0100.0100.0100.0100.0100.0100.0100.00.0100.00.00.00.0

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment


Weighted
Period End2021-06-302021-03-312020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value3900000.02200000.000900000.001100000.01600000.01700000.02000000.02200000.002300000.01300000.000700000.01200000.01100000.01100000.01200000.01300000.01000000.01000000.01000000.0900000.0600000.0800000.0600000.01.1800000.0800000.00.8
Percentage of WeightedAverageNumberDilutedSharesOutstandingAdjustment100.0100.00.00.0100.00.0100.0100.0100.0100.0100.00.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:EntityCommonStockSharesOutstanding

dei:EntityCommonStockSharesOutstanding


Entity
Period End2021-01-31
Value158
Percentage of EntityCommonStockSharesOutstanding100.0

oln:A2020SupplyContractPaymentAccretion

oln:A2020SupplyContractPaymentAccretion


A2020
Period End2020-12-31
Value40
Percentage of A2020SupplyContractPaymentAccretion100.0

oln:A2021SeniorSecuredCreditFacility us-gaap:DebtInstrument

oln:A2021SeniorSecuredCreditFacility

oln:A16500MillionSeniorSecuredCreditFacility


A2021
Period End2021-02-24
Value1615
Percentage of A2021SeniorSecuredCreditFacility100.0

oln:AccrualForEnvironmentalLossContingenciesUndiscountedDueBeyondYearTen

oln:AccrualForEnvironmentalLossContingenciesUndiscountedDueBeyondYearTen


Accrual
Period End2020-12-31
Value31
Percentage of AccrualForEnvironmentalLossContingenciesUndiscountedDueBeyondYearTen100.0

oln:AccrualForEnvironmentalLossContingenciesUndiscountedDueWithinSixToTenYears

oln:AccrualForEnvironmentalLossContingenciesUndiscountedDueWithinSixToTenYears


Accrual
Period End2020-12-31
Value27
Percentage of AccrualForEnvironmentalLossContingenciesUndiscountedDueWithinSixToTenYears100.0

oln:AccrualForEnvironmentalLossContingenciesUndiscountedDueWithinYearOneToFiveYears

oln:AccrualForEnvironmentalLossContingenciesUndiscountedDueWithinYearOneToFiveYears


Accrual
Period End2020-12-31
Value88
Percentage of AccrualForEnvironmentalLossContingenciesUndiscountedDueWithinYearOneToFiveYears100.0

oln:AccruedLiabilitiesUnassertedEnvironmentalClaims

oln:AccruedLiabilitiesUnassertedEnvironmentalClaims


Accrued
Period End2020-12-31
Value9000000.0
Percentage of AccruedLiabilitiesUnassertedEnvironmentalClaims100.0

oln:AccruedManufacturingCosts

oln:AccruedManufacturingCosts


Accrued
Period End2020-12-312019-12-31
Value221.3
Percentage of AccruedManufacturingCosts100.0100.0

oln:CapitalLossCarryForward

oln:CapitalLossCarryForward


Capital
Period End2020-12-31
Value3600000.0
Percentage of CapitalLossCarryForward100.0

oln:CapitalLossCarryforwardAmountincludedinDeferredTaxAssets

oln:CapitalLossCarryforwardAmountincludedinDeferredTaxAssets


Capital
Period End2020-12-31
Value900000.0
Percentage of CapitalLossCarryforwardAmountincludedinDeferredTaxAssets100.0

oln:CommittedSharesReservedUnderStockPurchasePlansForNonEmployeeDirectors us-gaap:PlanName

oln:CommittedSharesReservedUnderStockPurchasePlansForNonEmployeeDirectors

oln:StockPurchasePlans


Committed
Period End2020-12-31
Value277720.0
Percentage of CommittedSharesReservedUnderStockPurchasePlansForNonEmployeeDirectors100.0

oln:CommodityForwardContractsAssetFairValueDisclosure

oln:CommodityForwardContractsAssetFairValueDisclosure


Commodity
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312011-03-312010-12-312010-09-30
Value292.00.71111131610
Percentage of CommodityForwardContractsAssetFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0

oln:CommodityForwardContractsAssetFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel2


Commodity
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312011-06-302011-03-312010-12-312010-09-302010-06-30
Value292.00.711115.37.99.96.20.2
Percentage of CommodityForwardContractsAssetFairValueDisclosure100.0100.0100.0100.0100.00.057.258.659.60.0

oln:CommodityForwardContractsLiabilityFairValueDisclosure

oln:CommodityForwardContractsLiabilityFairValueDisclosure


Commodity
Period End2020-12-312019-12-312018-12-312017-12-312012-03-312011-12-312011-09-302010-12-312010-09-30
Value0.7193.43.84.210140.20.8
Percentage of CommodityForwardContractsLiabilityFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0

oln:CommodityForwardContractsLiabilityFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel2


Commodity
Period End2020-12-312019-12-312018-12-312017-12-312012-03-312011-12-312011-09-302011-06-302010-12-312010-09-302010-06-30
Value0.7193.43.84.07.79.90.10.20.80.3
Percentage of CommodityForwardContractsLiabilityFairValueDisclosure100.0100.0100.0100.095.275.567.30.0100.0100.00.0

oln:ContributionToIndividualRetirementAccountPercentageOfEmployeesEligibleCompensation us-gaap:Range

oln:ContributionToIndividualRetirementAccountPercentageOfEmployeesEligibleCompensation

srt:Maximum


Contribution
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-06-302019-03-31
Value7.57.57.57.50.0750.0750.0750.0750.075
Percentage of ContributionToIndividualRetirementAccountPercentageOfEmployeesEligibleCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:Minimum


Contribution
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value5.05.05.05.00.050.050.050.050.050.05
Percentage of ContributionToIndividualRetirementAccountPercentageOfEmployeesEligibleCompensation66.766.766.766.766.766.766.70.066.766.7

oln:DebtCovenantSecuredDebt

oln:DebtCovenantSecuredDebt


Debt
Period End2020-09-30
Value153
Percentage of DebtCovenantSecuredDebt100.0

oln:DebtCovenantSecuredDebt us-gaap:DebtInstrument

oln:A5000MillionSeniorSecuredDelayedDrawTermLoan


Debt
Period End2020-12-31
Value500
Percentage of DebtCovenantSecuredDebt0.0

oln:A8150MillionSeniorSecuredTermLoan


Debt
Period End2021-03-31
Value815
Percentage of DebtCovenantSecuredDebt0.0

oln:GoZoneAndRecoveryZoneBonds


Debt
Period End2020-12-31
Value153
Percentage of DebtCovenantSecuredDebt0.0

oln:SeniorSecuredTermLoans


Debt
Period End2021-06-30
Value665
Percentage of DebtCovenantSecuredDebt0.0

oln:DebtCovenantSecuredDebtExclusion us-gaap:DebtInstrument

oln:DebtCovenantSecuredDebtExclusion

oln:ReceivablesFinancingAgreement


Debt
Period End2020-12-31
Value250
Percentage of DebtCovenantSecuredDebtExclusion100.0

oln:DebtRepaymentCash

oln:DebtRepaymentCash


Debt
Period End2020-10-15
Value114
Percentage of DebtRepaymentCash100.0

oln:DebtRepaymentCash us-gaap:DebtInstrument

oln:A2025Notes


Debt
Period End2021-03-31
Value15
Percentage of DebtRepaymentCash0.0

oln:A720.0millionSeniorNotesDue2023


Debt
Period End2021-01-15
Value122
Percentage of DebtRepaymentCash0.0

oln:DebtRepaymentCash us-gaap:SubsequentEventType

us-gaap:SubsequentEvent


Debt
Period End2021-01-152020-10-15
Value122114
Percentage of DebtRepaymentCash0.0100.0

oln:DebtRepaymentDebtRefinance us-gaap:DebtInstrument

oln:DebtRepaymentDebtRefinance

oln:A3150MillionSeniorSecuredDelayedDrawTermLoan


Debt
Period End2021-03-31
Value315
Percentage of DebtRepaymentDebtRefinance100.0

oln:A5000MillionSeniorSecuredDelayedDrawTermLoan


Debt
Period End2020-10-15
Value500
Percentage of DebtRepaymentDebtRefinance0.0

oln:DebtRepaymentDebtRefinance us-gaap:DebtInstrument, us-gaap:SubsequentEventType

oln:A500.0millionSeniorSecuredDelayedDrawTermLoan, us-gaap:SubsequentEvent


Debt
Period End2020-10-15
Value500
Percentage of DebtRepaymentDebtRefinance0.0

oln:DeferredTaxAssetsLeasingTransactions

oln:DeferredTaxAssetsLeasingTransactions


Deferred
Period End2020-12-312019-12-312018-12-31
Value87900.0
Percentage of DeferredTaxAssetsLeasingTransactions100.0100.00.0

oln:DeferredTaxAssetsTaxCreditCarryforwardsUSFederal

oln:DeferredTaxAssetsTaxCreditCarryforwardsUSFederal


Deferred
Period End2020-12-31
Value10
Percentage of DeferredTaxAssetsTaxCreditCarryforwardsUSFederal100.0

oln:DeferredTaxLiabilitiesPartnerships

oln:DeferredTaxLiabilitiesPartnerships


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value80676567106
Percentage of DeferredTaxLiabilitiesPartnerships100.0100.0100.0100.0100.0

oln:DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRateforInterestCost

oln:DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRateforInterestCost


Defined
Period End2020-12-31
Value2.8
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRateforInterestCost100.0

oln:DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRateforServiceCost

oln:DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRateforServiceCost


Defined
Period End2020-12-31
Value3.3
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRateforServiceCost100.0

oln:DelayedDrawTermLoanFacilityMaximumBorrowingCapacity us-gaap:DebtInstrument

oln:DelayedDrawTermLoanFacilityMaximumBorrowingCapacity

oln:A3150MillionSeniorSecuredDelayedDrawTermLoan


Delayed
Period End2021-02-24
Value315
Percentage of DelayedDrawTermLoanFacilityMaximumBorrowingCapacity100.0

oln:DerivativeContracts

oln:DerivativeContracts


Derivative
Period End2020-12-312019-12-312018-12-31
Value0.1193.5
Percentage of DerivativeContracts100.0100.0100.0

oln:EnvironmentalLiabilityNumberOfAffectedSites

oln:EnvironmentalLiabilityNumberOfAffectedSites


Environmental
Period End2020-12-31
Value58.0
Percentage of EnvironmentalLiabilityNumberOfAffectedSites100.0

oln:EnvironmentalLiabilityNumberOfSmallerSites

oln:EnvironmentalLiabilityNumberOfSmallerSites


Environmental
Period End2020-12-31
Value49.0
Percentage of EnvironmentalLiabilityNumberOfSmallerSites100.0

oln:EnvironmentalLiabilityNumberOfUsepaNplSites

oln:EnvironmentalLiabilityNumberOfUsepaNplSites


Environmental
Period End2020-12-31
Value14.0
Percentage of EnvironmentalLiabilityNumberOfUsepaNplSites100.0

oln:EnvironmentalLiabilityPercentageOfLiabilityLargerSitesMaximum

oln:EnvironmentalLiabilityPercentageOfLiabilityLargerSitesMaximum


Environmental
Period End2020-12-31
Value23.0
Percentage of EnvironmentalLiabilityPercentageOfLiabilityLargerSitesMaximum100.0

oln:EnvironmentalLiabilityPercentageOfLiabilityRelatedToLargerSites

oln:EnvironmentalLiabilityPercentageOfLiabilityRelatedToLargerSites


Environmental
Period End2020-12-31
Value82.0
Percentage of EnvironmentalLiabilityPercentageOfLiabilityRelatedToLargerSites100.0

oln:EnvironmentalLiabilityPercentageOfLiabilitySmallerSitesMaximum

oln:EnvironmentalLiabilityPercentageOfLiabilitySmallerSitesMaximum


Environmental
Period End2020-12-31
Value3.0
Percentage of EnvironmentalLiabilityPercentageOfLiabilitySmallerSitesMaximum100.0

oln:EnvironmentalPossibleAdditionalContingentEnvironmentalLiabilities

oln:EnvironmentalPossibleAdditionalContingentEnvironmentalLiabilities


Environmental
Period End2020-12-31
Value60
Percentage of EnvironmentalPossibleAdditionalContingentEnvironmentalLiabilities100.0

oln:FinanceLeaseAccumulatedDepreciation

oln:FinanceLeaseAccumulatedDepreciation


Finance
Period End2020-12-31
Value3500000.0
Percentage of FinanceLeaseAccumulatedDepreciation100.0

oln:FinanceLeaseGrossValue

oln:FinanceLeaseGrossValue


Finance
Period End2020-12-31
Value8000000.0
Percentage of FinanceLeaseGrossValue100.0

oln:InterestRatesSwapsClassifiedinDebt

oln:InterestRatesSwapsClassifiedinDebt


Interest
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value-1800000.0-2200000.0-33700000.0-28100000.0-28400000.0
Percentage of InterestRatesSwapsClassifiedinDebt100.0100.0100.0100.0100.0

oln:LesseeTotalLeaseAssets

oln:LesseeTotalLeaseAssets


Lessee
Period End2020-12-312019-12-31
Value365383
Percentage of LesseeTotalLeaseAssets100.0100.0

oln:LesseeTotalLeaseLiabilities

oln:LesseeTotalLeaseLiabilities


Lessee
Period End2020-12-312019-12-312019-09-302019-06-30
Value370388325306
Percentage of LesseeTotalLeaseLiabilities100.0100.0100.0100.0

oln:LongTermDebtMaturityAfterFiscalYear2025

oln:LongTermDebtMaturityAfterFiscalYear2025


Long
Period End2021-06-302021-03-31
Value18481883
Percentage of LongTermDebtMaturityAfterFiscalYear2025100.0100.0

oln:LongTermDebtMaturityFiscalYear2022

oln:LongTermDebtMaturityFiscalYear2022


Long
Period End2021-06-302021-03-31
Value326366
Percentage of LongTermDebtMaturityFiscalYear2022100.0100.0

oln:LongTermDebtMaturityFiscalYear2023

oln:LongTermDebtMaturityFiscalYear2023


Long
Period End2021-06-302021-03-31
Value1.062
Percentage of LongTermDebtMaturityFiscalYear2023100.0100.0

oln:LongTermDebtMaturityFiscalYear2024

oln:LongTermDebtMaturityFiscalYear2024


Long
Period End2021-06-302021-03-31
Value735753
Percentage of LongTermDebtMaturityFiscalYear2024100.0100.0

oln:LongTermDebtMaturityFiscalYear2025

oln:LongTermDebtMaturityFiscalYear2025


Long
Period End2021-06-302021-03-31
Value503688
Percentage of LongTermDebtMaturityFiscalYear2025100.0100.0

oln:McIntoshRestructuringCapacityReduction us-gaap:RestructuringPlan, us-gaap:StatementBusinessSegments

oln:McIntoshRestructuringCapacityReduction

oln:McIntoshPlan, oln:ChlorAlkaliProductsandVinylsSegment


Mc
Period End2021-03-15
Value200000.0
Percentage of McIntoshRestructuringCapacityReduction100.0

oln:PlaquemineRestructuringPlan, oln:ChlorAlkaliProductsandVinylsSegment


Mc
Period End2021-05-18
Value225000.0
Percentage of McIntoshRestructuringCapacityReduction0.0

oln:OperatingLeaseLeaseNotyetCommencedExpense oln:LeaseArrangementCategory

oln:OperatingLeaseLeaseNotyetCommencedExpense

oln:OfficeSpace


Operating
Period End2020-12-312019-12-312019-09-302019-03-31
Value5.0272720
Percentage of OperatingLeaseLeaseNotyetCommencedExpense100.0100.0100.0100.0

oln:Railcars


Operating
Period End2020-12-312019-12-312019-09-302019-03-31
Value649.07.09.0
Percentage of OperatingLeaseLeaseNotyetCommencedExpense1280.033.325.945.0

oln:OperatingLossCarryforwardsNotSubjecttoExpiration oln:OperatingLossCarryforwards

oln:OperatingLossCarryforwardsNotSubjecttoExpiration

oln:Foreign


Operating
Period End2020-12-31
Value302
Percentage of OperatingLossCarryforwardsNotSubjecttoExpiration100.0

oln:OperatingLossCarryforwardsSubjecttoExpiration oln:OperatingLossCarryforwards

oln:OperatingLossCarryforwardsSubjecttoExpiration

oln:Foreign


Operating
Period End2020-12-31
Value59
Percentage of OperatingLossCarryforwardsSubjecttoExpiration100.0

oln:OptionPriceExercisedMaximum

oln:OptionPriceExercisedMaximum


Option
Period End2020-12-31
Value18.78
Percentage of OptionPriceExercisedMaximum100.0

oln:OptionPriceExercisedMinimum

oln:OptionPriceExercisedMinimum


Option
Period End2020-12-31
Value13.14
Percentage of OptionPriceExercisedMinimum100.0

oln:OptionPriceOutstandingMaximumEndOfPeriod

oln:OptionPriceOutstandingMaximumEndOfPeriod


Option
Period End2020-12-31
Value32.94
Percentage of OptionPriceOutstandingMaximumEndOfPeriod100.0

oln:OptionPriceOutstandingMinimumEndOfPeriod

oln:OptionPriceOutstandingMinimumEndOfPeriod


Option
Period End2020-12-31
Value13.14
Percentage of OptionPriceOutstandingMinimumEndOfPeriod100.0

oln:Optionpricegrantedmaximum

oln:Optionpricegrantedmaximum


Optionpricegrantedmaximum
Period End2020-12-31
Value17.33
Percentage of Optionpricegrantedmaximum100.0

oln:Optionpricegrantedminimum

oln:Optionpricegrantedminimum


Optionpricegrantedminimum
Period End2020-12-31
Value17.33
Percentage of Optionpricegrantedminimum100.0

oln:OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodAfterTax

oln:OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodAfterTax


Other
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312011-12-312010-12-31
Value17-145.5-76.5-21.3-40.72523
Percentage of OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodAfterTax100.0100.0100.0100.0100.0100.0100.0

oln:OtherComprehensiveIncomeOtherPostretirementPlansNetUnamortizedGainLossArisingDuringPeriodAfterTax us-gaap:RetirementPlanType

oln:OtherComprehensiveIncomeOtherPostretirementPlansNetUnamortizedGainLossArisingDuringPeriodAfterTax

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Other
Period End2020-12-312019-12-31
Value-3100000.0-4700000.0
Percentage of OtherComprehensiveIncomeOtherPostretirementPlansNetUnamortizedGainLossArisingDuringPeriodAfterTax100.0100.0

oln:OutstandingLetterOfCredit

oln:OutstandingLetterOfCredit


Outstanding
Period End2020-12-31
Value80
Percentage of OutstandingLetterOfCredit100.0

oln:ParOutstandingOfBondsUsedInYieldCurve

oln:ParOutstandingOfBondsUsedInYieldCurve


Par
Period End2020-12-31
Value250
Percentage of ParOutstandingOfBondsUsedInYieldCurve100.0

oln:ParOutstandingValueNonCallableZeroCouponBondToDetermineHypotheticalYieldCurve us-gaap:RetirementPlanType

oln:ParOutstandingValueNonCallableZeroCouponBondToDetermineHypotheticalYieldCurve

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Par
Period End2020-12-31
Value250
Percentage of ParOutstandingValueNonCallableZeroCouponBondToDetermineHypotheticalYieldCurve100.0

oln:ReceivablesFinancingAvailableBorrowingCapacity

oln:ReceivablesFinancingAvailableBorrowingCapacity


Receivables
Period End2021-03-312020-12-312020-09-30
Value125124115
Percentage of ReceivablesFinancingAvailableBorrowingCapacity100.0100.0100.0

oln:ReceivablesFinancingAvailableBorrowingCapacity us-gaap:DebtInstrument

oln:ReceivablesFinancingAgreement


Receivables
Period End2021-06-30
Value125
Percentage of ReceivablesFinancingAvailableBorrowingCapacity0.0

oln:SeniorSecuredTermLoanFacility us-gaap:DebtInstrument

oln:SeniorSecuredTermLoanFacility

oln:A5000MillionSeniorSecuredTermLoan


Senior
Period End2021-02-24
Value500
Percentage of SeniorSecuredTermLoanFacility100.0

oln:ShareBasedCompensationOutstandingPerformanceShares oln:PerformanceSharesSettlementOption

oln:ShareBasedCompensationOutstandingPerformanceShares

oln:ToSettleInCash


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value393200.0317710.0670300.0650690.0542830.0
Percentage of ShareBasedCompensationOutstandingPerformanceShares100.0100.0100.0100.0100.0

oln:ToSettleInShares


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value345430.0304080.0490700.0480200.0536580.0
Percentage of ShareBasedCompensationOutstandingPerformanceShares87.895.773.273.898.8

oln:SubLimitForAllTypesOfStockAwardsIncludedInAvailableToBeIssuedStockOptions

oln:SubLimitForAllTypesOfStockAwardsIncludedInAvailableToBeIssuedStockOptions


Sub
Period End2020-12-31
Value472630.0
Percentage of SubLimitForAllTypesOfStockAwardsIncludedInAvailableToBeIssuedStockOptions100.0

oln:SupplyContractAmortizationExpenseNextTwelveMonths

oln:SupplyContractAmortizationExpenseNextTwelveMonths


Supply
Period End2020-12-31
Value70
Percentage of SupplyContractAmortizationExpenseNextTwelveMonths100.0

oln:SupplyContractAmortizationExpenseYear2

oln:SupplyContractAmortizationExpenseYear2


Supply
Period End2020-12-31
Value70
Percentage of SupplyContractAmortizationExpenseYear2100.0

oln:SupplyContractAmortizationExpenseYear3

oln:SupplyContractAmortizationExpenseYear3


Supply
Period End2020-12-31
Value70
Percentage of SupplyContractAmortizationExpenseYear3100.0

oln:SupplyContractAmortizationExpenseYear4

oln:SupplyContractAmortizationExpenseYear4


Supply
Period End2020-12-31
Value70
Percentage of SupplyContractAmortizationExpenseYear4100.0

oln:SupplyContractAmortizationExpenseYear5

oln:SupplyContractAmortizationExpenseYear5


Supply
Period End2020-12-31
Value70
Percentage of SupplyContractAmortizationExpenseYear5100.0

oln:SupplyContracts

oln:SupplyContracts


Supply
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value1091110611221129113711031112112211311090109911081118112711371146554560566
Percentage of SupplyContracts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

oln:TotalLeaseLiabilityPaymentsDue

oln:TotalLeaseLiabilityPaymentsDue


Total
Period End2020-12-31
Value431
Percentage of TotalLeaseLiabilityPaymentsDue100.0

oln:TotalLeaseLiabilityPaymentsDueNextTwelveMonths

oln:TotalLeaseLiabilityPaymentsDueNextTwelveMonths


Total
Period End2020-12-31
Value85
Percentage of TotalLeaseLiabilityPaymentsDueNextTwelveMonths100.0

oln:TotalLeaseLiabilityPaymentsDueYearFive

oln:TotalLeaseLiabilityPaymentsDueYearFive


Total
Period End2020-12-31
Value33
Percentage of TotalLeaseLiabilityPaymentsDueYearFive100.0

oln:TotalLeaseLiabilityPaymentsDueYearFour

oln:TotalLeaseLiabilityPaymentsDueYearFour


Total
Period End2020-12-31
Value42
Percentage of TotalLeaseLiabilityPaymentsDueYearFour100.0

oln:TotalLeaseLiabilityPaymentsDueYearThree

oln:TotalLeaseLiabilityPaymentsDueYearThree


Total
Period End2020-12-31
Value53
Percentage of TotalLeaseLiabilityPaymentsDueYearThree100.0

oln:TotalLeaseLiabilityPaymentsDueYearTwo

oln:TotalLeaseLiabilityPaymentsDueYearTwo


Total
Period End2020-12-31
Value68
Percentage of TotalLeaseLiabilityPaymentsDueYearTwo100.0

oln:TotalLeaseLiabilityPaymentsDueafterYearFive

oln:TotalLeaseLiabilityPaymentsDueafterYearFive


Total
Period End2020-12-31
Value148
Percentage of TotalLeaseLiabilityPaymentsDueafterYearFive100.0

oln:TotalLeaseLiabilityUndiscountedExcessAmount

oln:TotalLeaseLiabilityUndiscountedExcessAmount


Total
Period End2020-12-31
Value60
Percentage of TotalLeaseLiabilityUndiscountedExcessAmount100.0

oln:TotalVestedPerformanceShares oln:PerformanceSharesSettlementOption

oln:TotalVestedPerformanceShares

oln:ToSettleInCash


Total
Period End2020-12-312019-12-312018-12-312017-12-31
Value216960.0192140.0564690.0448670.0
Percentage of TotalVestedPerformanceShares100.0100.0100.0100.0

oln:ToSettleInShares


Total
Period End2020-12-312019-12-312018-12-312017-12-31
Value168230.0177560.0385080.0278180.0
Percentage of TotalVestedPerformanceShares77.592.468.262.0

oln:TransferofFinancialAssetsFacilityMaximum

oln:TransferofFinancialAssetsFacilityMaximum


Transferof
Period End2020-12-312020-09-30
Value228315
Percentage of TransferofFinancialAssetsFacilityMaximum100.0100.0

oln:WeightedAverageFairValueOutstandingPerformanceShares oln:PerformanceSharesSettlementOption

oln:WeightedAverageFairValueOutstandingPerformanceShares

oln:ToSettleInCash


Weighted
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value24.8417.1819.8935.6225.84
Percentage of WeightedAverageFairValueOutstandingPerformanceShares100.0100.0100.0100.0100.0

oln:ToSettleInShares


Weighted
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value21.3728.9121.5819.8116.18
Percentage of WeightedAverageFairValueOutstandingPerformanceShares86.0168.3108.555.662.6

oln:WeightedAverageFairValueTotalVestedPerformanceShares oln:PerformanceSharesSettlementOption

oln:WeightedAverageFairValueTotalVestedPerformanceShares

oln:ToSettleInCash


Weighted
Period End2020-12-312019-12-312018-12-312017-12-31
Value24.8417.1819.8935.62
Percentage of WeightedAverageFairValueTotalVestedPerformanceShares100.0100.0100.0100.0

oln:ToSettleInShares


Weighted
Period End2020-12-312019-12-312018-12-312017-12-31
Value23.4129.7718.9518.21
Percentage of WeightedAverageFairValueTotalVestedPerformanceShares94.2173.395.351.1

us-gaap:AccountsAndOtherReceivablesNetCurrent

us-gaap:AccountsAndOtherReceivablesNetCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1033963770714700802760849848808
Percentage of AccountsAndOtherReceivablesNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccrualForEnvironmentalLossContingencies

us-gaap:AccrualForEnvironmentalLossContingencies


Accrual
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-31
Value148147147146138139139140144125125129132131131135135136137137138139138139137136138139142144144143144145146150154163163164168166167170165166
Percentage of AccrualForEnvironmentalLossContingencies100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccrualForTaxesOtherThanIncomeTaxesCurrent

us-gaap:AccrualForTaxesOtherThanIncomeTaxesCurrent


Accrual
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value543723344029
Percentage of AccrualForTaxesOtherThanIncomeTaxesCurrent100.0100.0100.0100.0100.0100.0

us-gaap:AccruedEmployeeBenefitsCurrent

us-gaap:AccruedEmployeeBenefitsCurrent


Accrued
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value2924252121244135284345
Percentage of AccruedEmployeeBenefitsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedEnvironmentalLossContingenciesCurrent

us-gaap:AccruedEnvironmentalLossContingenciesCurrent


Accrued
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value1917172017191918213128
Percentage of AccruedEnvironmentalLossContingenciesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedEnvironmentalLossContingenciesNoncurrent

us-gaap:AccruedEnvironmentalLossContingenciesNoncurrent


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value129128128129121122122123127108108109112111111118118119120118119120119120118117119121124126126122123124125119123132132136140138139146141
Percentage of AccruedEnvironmentalLossContingenciesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedProfessionalFeesCurrent

us-gaap:AccruedProfessionalFeesCurrent


Accrued
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value4052543121322623212425
Percentage of AccruedProfessionalFeesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedSalariesCurrent

us-gaap:AccruedSalariesCurrent


Accrued
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value57561008277534051494232
Percentage of AccruedSalariesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax


Accumulated
Period End2020-12-312019-12-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-312008-12-31
Value21-13.61.87.41113118.47.11012-3.1-5.7-3.9-6.9-6.8-4.7-4.5-4.2-1.40.6-2.20.9-0.6-4.7-0.44.75.2-4.0-1.0-5.3-8.65.48.5116.7-1.811-25.0
Percentage of AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-312008-12-31
Value709720730754763772781636642647653585593601503486490494498460466469473421426431436354357361365362367-372.9-378.1-279.9-283.2-287.5-290.7-264.7-267.7-271.0-273.8-251.9-254.4-259.3-239.3
Percentage of AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-312008-12-31
Value108.0197.8-9.2-17.4-8.4-20.0-4.3-7.60.77.29.2357.67.6-2.2-18.1-24.1-2.8-7.43.4-12.1-5.1-3.4-3.7-2.3-1.00.50.2-0.50.3-0.12.22.12.11.32.11.82.72.71.70.4-1.1-1.9-0.5-5.1
Percentage of AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AociLossCashFlowHedgeCumulativeGainLossAfterTax

us-gaap:AociLossCashFlowHedgeCumulativeGainLossAfterTax


Aoci
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value44282118-1.5-31.5-13.6-16.1-13.6-1.51.87.4111311
Percentage of AociLossCashFlowHedgeCumulativeGainLossAfterTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetRetirementObligation

us-gaap:AssetRetirementObligation


Asset
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value656360545553546067677070
Percentage of AssetRetirementObligation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetRetirementObligationCurrent

us-gaap:AssetRetirementObligationCurrent


Asset
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value18101010127.31013211213
Percentage of AssetRetirementObligationCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetRetirementObligationsNoncurrent

us-gaap:AssetRetirementObligationsNoncurrent


Asset
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value4753494342464447465556
Percentage of AssetRetirementObligationsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashFlowHedgesDerivativeInstrumentsAtFairValueNet us-gaap:DerivativeInstrumentRisk

us-gaap:CashFlowHedgesDerivativeInstrumentsAtFairValueNet

us-gaap:CommodityContract


Cash
Period End2021-06-302021-03-312020-12-312020-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value59372824-19.45.4-2.60.73.45.57.54.81.96.1112.9
Percentage of CashFlowHedgesDerivativeInstrumentsAtFairValueNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrumentUnamortizedDiscountPremiumNet

us-gaap:DebtInstrumentUnamortizedDiscountPremiumNet


Debt
Period End2020-12-31
Value2200000.0
Percentage of DebtInstrumentUnamortizedDiscountPremiumNet100.0

us-gaap:DebtLongtermAndShorttermCombinedAmount

us-gaap:DebtLongtermAndShorttermCombinedAmount


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value386333403230361236173848
Percentage of DebtLongtermAndShorttermCombinedAmount100.0100.0100.0100.0100.0100.0

us-gaap:DeferredCompensationLiabilityCurrentAndNoncurrent

us-gaap:DeferredCompensationLiabilityCurrentAndNoncurrent


Deferred
Period End2020-12-31
Value5400000.0
Percentage of DeferredCompensationLiabilityCurrentAndNoncurrent100.0

us-gaap:DeferredFinanceCostsNet

us-gaap:DeferredFinanceCostsNet


Deferred
Period End2020-12-312019-12-31
Value3738
Percentage of DeferredFinanceCostsNet100.0100.0

us-gaap:DeferredIncomeTaxAssetsNet

us-gaap:DeferredIncomeTaxAssetsNet


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value11111113638393530283126243939
Percentage of DeferredIncomeTaxAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredIncomeTaxLiabilities


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value76776268268913601421291
Percentage of DeferredIncomeTaxLiabilities100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetInterestCarryforward

us-gaap:DeferredTaxAssetInterestCarryforward


Deferred
Period End2020-12-312019-12-312018-12-31
Value7.0419.3
Percentage of DeferredTaxAssetInterestCarryforward100.0100.0100.0

us-gaap:DeferredTaxAssetsCapitalLossCarryforwards

us-gaap:DeferredTaxAssetsCapitalLossCarryforwards


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value0.90.92.02.12.84.74.83.0151514
Percentage of DeferredTaxAssetsCapitalLossCarryforwards100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsGross


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value574524336335476451268242263230227
Percentage of DeferredTaxAssetsGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value141705053105406.67.26.75.75.7
Percentage of DeferredTaxAssetsOperatingLossCarryforwards100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards oln:OperatingLossCarryforwards

country:US


Deferred
Period End2020-12-31
Value53
Percentage of DeferredTaxAssetsOperatingLossCarryforwards37.7

oln:Foreign


Deferred
Period End2020-12-312019-12-312018-12-312017-12-31
Value61573833
Percentage of DeferredTaxAssetsOperatingLossCarryforwards43.982.175.762.1

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsNotSubjectToExpiration oln:OperatingLossCarryforwards

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsNotSubjectToExpiration

oln:Foreign


Deferred
Period End2020-12-31
Value47
Percentage of DeferredTaxAssetsOperatingLossCarryforwardsNotSubjectToExpiration100.0

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal


Deferred
Period End2020-12-31
Value25
Percentage of DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal100.0

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpiration oln:OperatingLossCarryforwards

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpiration

oln:Foreign


Deferred
Period End2020-12-31
Value14
Percentage of DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpiration100.0

us-gaap:DeferredTaxAssetsTaxCreditCarryforwards

us-gaap:DeferredTaxAssetsTaxCreditCarryforwards


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value4925193713239.213101015
Percentage of DeferredTaxAssetsTaxCreditCarryforwards100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxCreditCarryforwardsForeign

us-gaap:DeferredTaxAssetsTaxCreditCarryforwardsForeign


Deferred
Period End2020-12-31
Value16
Percentage of DeferredTaxAssetsTaxCreditCarryforwardsForeign100.0

us-gaap:DeferredTaxAssetsTaxCreditCarryforwardsOther

us-gaap:DeferredTaxAssetsTaxCreditCarryforwardsOther


Deferred
Period End2020-12-31
Value23
Percentage of DeferredTaxAssetsTaxCreditCarryforwardsOther100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value18119015614722623510874934843
Percentage of DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value5438373753534348434246
Percentage of DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligations

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligations


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value1613151422212225282829
Percentage of DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsReserves

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsReserves


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value3634313354555660606668
Percentage of DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsReserves100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesDeferredExpenseCapitalizedInventoryCosts

us-gaap:DeferredTaxLiabilitiesDeferredExpenseCapitalizedInventoryCosts


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value17208.31.013115.63.1
Percentage of DeferredTaxLiabilitiesDeferredExpenseCapitalizedInventoryCosts100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value40546167137138108.48.81010
Percentage of DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesLeasingArrangements

us-gaap:DeferredTaxLiabilitiesLeasingArrangements


Deferred
Period End2020-12-312019-12-312018-12-31
Value86880.0
Percentage of DeferredTaxLiabilitiesLeasingArrangements100.0100.00.0

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DeferredTaxLiabilitiesOther


Deferred
Period End2020-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value6.20.04.6101989395927.2
Percentage of DeferredTaxLiabilitiesOther100.00.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value530525541550875875177182178147157
Percentage of DeferredTaxLiabilitiesPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesUndistributedForeignEarnings

us-gaap:DeferredTaxLiabilitiesUndistributedForeignEarnings


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value6.15.75.13.12232940.0
Percentage of DeferredTaxLiabilitiesUndistributedForeignEarnings100.0100.0100.0100.0100.0100.00.0

us-gaap:DefinedBenefitPensionPlanLiabilitiesNoncurrent

us-gaap:DefinedBenefitPensionPlanLiabilitiesNoncurrent


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value683699733766768778797622653660674589602628635618625627638597616635648971521671826487102115123137150164665758595557585850545556
Percentage of DefinedBenefitPensionPlanLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax

us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value9281003852786786740677561576435410
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

country:US, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-31
Value242320
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax2.72.32.4

country:US, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-31
Value798891796
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax86.088.993.4

us-gaap:ForeignPlan, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value2.11.71.00.90.3
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax0.20.20.10.10.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value130111565143
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax14.011.16.66.55.5

us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax us-gaap:RetirementPlanType

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value2725212525
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax2.92.52.53.33.2

us-gaap:DefinedBenefitPlanAmountsRecognizedInBalanceSheet

us-gaap:DefinedBenefitPlanAmountsRecognizedInBalanceSheet


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value19220417715014791473443418392364
Percentage of DefinedBenefitPlanAmountsRecognizedInBalanceSheet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanAmountsRecognizedInBalanceSheet us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

country:US, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-31
Value-19.3-18.3-17.4
Percentage of DefinedBenefitPlanAmountsRecognizedInBalanceSheet-10.0-8.9-9.8

country:US, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-31
Value423394356
Percentage of DefinedBenefitPlanAmountsRecognizedInBalanceSheet220.1192.5200.8

us-gaap:ForeignPlan, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value-9.8-9.2-8.5-9.3-8.3
Percentage of DefinedBenefitPlanAmountsRecognizedInBalanceSheet-5.1-4.5-4.8-6.2-5.6

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value-231.0-189.3-179.1-177.6-141.0
Percentage of DefinedBenefitPlanAmountsRecognizedInBalanceSheet-120.1-92.5-100.8-118.3-95.3

us-gaap:DefinedBenefitPlanAmountsRecognizedInBalanceSheet us-gaap:RetirementPlanType

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value-29.1-27.5-25.9-25.2-27.1
Percentage of DefinedBenefitPlanAmountsRecognizedInBalanceSheet-15.1-13.4-14.6-16.8-18.3

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

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate

country:US, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value2.40.0320.0420.036
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate100.0100.0100.0100.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value0.80.0140.0220.0220.0230.027
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate33.343.852.461.10.00.0

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate us-gaap:RetirementPlanType

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value2.30.0310.0410.0350.0380.041
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate95.896.997.697.20.00.0

us-gaap:DefinedBenefitPlanBenefitObligation

us-gaap:DefinedBenefitPlanBenefitObligation


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value320529972667288327172685218219782139194918451777
Percentage of DefinedBenefitPlanBenefitObligation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

country:US, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value44413740
Percentage of DefinedBenefitPlanBenefitObligation1.41.41.41.4

country:US, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value2758262023652579
Percentage of DefinedBenefitPlanBenefitObligation86.187.488.789.5

us-gaap:ForeignPlan, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value11109.5108.68.1
Percentage of DefinedBenefitPlanBenefitObligation0.40.40.40.40.30.3

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value446377302303251227
Percentage of DefinedBenefitPlanBenefitObligation13.912.611.310.59.28.5

us-gaap:DefinedBenefitPlanBenefitObligation us-gaap:RetirementPlanTaxStatus

us-gaap:NonqualifiedPlan


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value5.95.85.95.8
Percentage of DefinedBenefitPlanBenefitObligation0.20.20.20.2

us-gaap:DefinedBenefitPlanBenefitObligation us-gaap:RetirementPlanType

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value565247505262
Percentage of DefinedBenefitPlanBenefitObligation1.81.81.81.81.92.3

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths us-gaap:RetirementPlanTaxStatus

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths

us-gaap:NonqualifiedPlan


Defined
Period End2020-12-312019-12-312018-12-31
Value0.80.80.5
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths100.0100.0100.0

us-gaap:QualifiedPlan


Defined
Period End2020-12-312019-12-312018-12-31
Value146146140
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths18325.018362.528100.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths us-gaap:RetirementPlanType

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value3.04.04.04.0
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths375.0500.0800.00.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive us-gaap:RetirementPlanTaxStatus

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive

us-gaap:NonqualifiedPlan


Defined
Period End2020-12-312019-12-312018-12-31
Value0.30.20.3
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive100.0100.0100.0

us-gaap:QualifiedPlan


Defined
Period End2020-12-312019-12-312018-12-31
Value149143135
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive49666.771900.045066.7

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive us-gaap:RetirementPlanType

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value3.04.04.04.0
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive1000.02000.01333.30.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour us-gaap:RetirementPlanTaxStatus

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour

us-gaap:QualifiedPlan


Defined
Period End2020-12-312019-12-312018-12-31
Value148145138
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour100.0100.0100.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour us-gaap:RetirementPlanType

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value3.04.04.04.0
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour2.02.82.90.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree us-gaap:RetirementPlanTaxStatus

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree

us-gaap:NonqualifiedPlan


Defined
Period End2020-12-312019-12-312018-12-31
Value0.40.40.5
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree100.0100.0100.0

us-gaap:QualifiedPlan


Defined
Period End2020-12-312019-12-312018-12-31
Value147146139
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree36950.036575.027880.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree us-gaap:RetirementPlanType

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value3.04.04.04.0
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree750.01000.0800.00.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo us-gaap:RetirementPlanTaxStatus

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo

us-gaap:NonqualifiedPlan


Defined
Period End2020-12-312019-12-312018-12-31
Value0.40.50.9
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo100.0100.0100.0

us-gaap:QualifiedPlan


Defined
Period End2020-12-312019-12-312018-12-31
Value147146140
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo36750.029280.015588.9

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo us-gaap:RetirementPlanType

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value3.04.04.04.0
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo750.0800.0444.40.0

us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear us-gaap:Range, us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanTaxStatus

us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear

srt:Maximum, us-gaap:ForeignPlan, us-gaap:QualifiedPlan


Defined
Period End2020-12-31
Value5000000.0
Percentage of DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear100.0

us-gaap:DefinedBenefitPlanFairValueOfPlanAssets

us-gaap:DefinedBenefitPlanFairValueOfPlanAssets


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value246921991993224620782036197818601981190618001722
Percentage of DefinedBenefitPlanFairValueOfPlanAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:DefinedBenefitPlanFundedStatusOfPlan

country:US, us-gaap:QualifiedPlan, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-31
Value371494
Percentage of DefinedBenefitPlanFundedStatusOfPlan100.0100.0

us-gaap:ForeignPlan, us-gaap:NonqualifiedPlan, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-31
Value2.62.5
Percentage of DefinedBenefitPlanFundedStatusOfPlan0.70.5

us-gaap:ForeignPlan, us-gaap:QualifiedPlan, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-31
Value358298
Percentage of DefinedBenefitPlanFundedStatusOfPlan96.460.4

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

country:US, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-31
Value-44.2-41.8-37.5
Percentage of DefinedBenefitPlanFundedStatusOfPlan-11.9-8.50.0

country:US, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-31
Value-375.1-497.6-439.7
Percentage of DefinedBenefitPlanFundedStatusOfPlan-100.9-100.70.0

us-gaap:ForeignPlan, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value-11.9-10.9-9.5108.6
Percentage of DefinedBenefitPlanFundedStatusOfPlan-3.2-2.20.00.00.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value-361.1-300.9-235.1229184
Percentage of DefinedBenefitPlanFundedStatusOfPlan-97.1-60.90.00.00.0

us-gaap:DefinedBenefitPlanFundedStatusOfPlan us-gaap:RetirementPlanTaxStatus

us-gaap:NonqualifiedPlan


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value5.95.85.95.8
Percentage of DefinedBenefitPlanFundedStatusOfPlan1.61.20.00.0

us-gaap:QualifiedPlan


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value730792668630
Percentage of DefinedBenefitPlanFundedStatusOfPlan196.4160.40.00.0

us-gaap:DefinedBenefitPlanFundedStatusOfPlan us-gaap:RetirementPlanType

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value-56.1-52.7-47.05052
Percentage of DefinedBenefitPlanFundedStatusOfPlan-15.1-10.70.00.00.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value-736.2-798.5-674.8636638
Percentage of DefinedBenefitPlanFundedStatusOfPlan-198.0-161.50.00.00.0

us-gaap:DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value7.30.0750.0750.080.08
Percentage of DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation

us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value31802972264128512685265521701968212519411831
Percentage of DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets

us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value2469219919932246207820361978186019811906
Percentage of DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation

us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value3205299726672883271726852182197821391949
Percentage of DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanPlanAssetsTargetAllocationPercentage us-gaap:DefinedBenefitPlanByPlanAssetCategories

us-gaap:DefinedBenefitPlanPlanAssetsTargetAllocationPercentage

oln:AlternativeInvestments


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value7.00.080.040.06
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage100.0100.0100.0100.0

oln:FixedIncomeCash


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value37.00.470.430.29
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage528.6587.51075.0483.3

oln:NonU.S.EquitySecuritiesDomain


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value22.00.180.160.18
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage314.3225.0400.0300.0

oln:U.S.EquitySecuritiesMemberDomain


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value34.00.270.20.27
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage485.7337.5500.0450.0

us-gaap:DefinedBenefitPlanPlanAssetsTargetAllocationPercentage us-gaap:Range, us-gaap:DefinedBenefitPlanByPlanAssetCategories

srt:Maximum, oln:AlternativeInvestments