AMKR


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

Table of contents



us-gaap:CommonStockValue

us-gaap:CommonStockSharesIssued
us-gaap:StatementEquityComponents

us-gaap:CommonStockSharesAuthorized

us-gaap:PreferredStockSharesAuthorized

us-gaap:CommonStockSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

us-gaap:CostOfGoodsAndServicesSold

us-gaap:GainsLossesOnExtinguishmentOfDebt

us-gaap:GrossProfit

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

us-gaap:IncomeTaxExpenseBenefit

us-gaap:InterestExpense

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic

us-gaap:NonoperatingIncomeExpense

us-gaap:OperatingExpenses

us-gaap:OperatingIncomeLoss

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax
us-gaap:StatementEquityComponents

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:ProfitLoss
us-gaap:StatementEquityComponents

us-gaap:ResearchAndDevelopmentExpense

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ProductOrService

us-gaap:Revenues

us-gaap:SellingGeneralAndAdministrativeExpense

us-gaap:Assets
us-gaap:ConsolidatedEntities

us-gaap:Liabilities
us-gaap:ConsolidatedEntities

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:StockholdersEquity

us-gaap:AssetsCurrent

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:ShortTermInvestments

us-gaap:AccountsReceivableNetCurrent

us-gaap:InventoryNet

us-gaap:OtherAssetsCurrent
us-gaap:PropertyPlantAndEquipmentByType
us-gaap:PropertyPlantAndEquipmentGross

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:Goodwill

us-gaap:DeferredTaxAssetsLiabilitiesNet

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OtherAssetsNoncurrent

us-gaap:AccountsPayableCurrent

us-gaap:AccruedIncomeTaxesCurrent

us-gaap:AccruedLiabilitiesCurrent

us-gaap:ContractWithCustomerLiabilityCurrent

us-gaap:DebtCurrent

us-gaap:DividendsPayableCurrent

us-gaap:LiabilitiesCurrent

us-gaap:LongTermDebtCurrent

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OtherAccruedLiabilitiesCurrent

us-gaap:LongTermDebt

us-gaap:LongTermDebtNoncurrent

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:MinorityInterest

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:OperatingLeaseLiability

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:StockholdersEquity

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents

us-gaap:CommonStockValue

us-gaap:AdditionalPaidInCapital

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:TreasuryStockValue

us-gaap:MinorityInterest

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
us-gaap:StatementEquityComponents

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:DepreciationDepletionAndAmortization

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss

us-gaap:ProfitLoss
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:ProceedsFromIssuanceOfLongTermDebt
us-gaap:StatementGeographical, us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:StatementGeographical, us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:VariableRate
us-gaap:StatementGeographical, us-gaap:DebtInstrument, us-gaap:VariableRate
us-gaap:StatementGeographical, us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:RepaymentsOfLongTermDebt

us-gaap:PaymentsOfDividendsCommonStock
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrumentInterestRateStatedPercentage
us-gaap:StatementGeographical, us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:StatementGeographical, us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType
us-gaap:StatementGeographical, us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:VariableRate

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:DeferredTaxAssetsNet

us-gaap:UnrecognizedTaxBenefits

us-gaap:DeferredTaxAssetsValuationAllowance
us-gaap:StatementGeographical
amkr:FactoringofAccountsReceivable
amkr:AccountsReceivableSoldwithoutRecourse

amkr:OtherNonoperatingIncomeExpenseNet

us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation
us-gaap:StatementEquityComponents

us-gaap:CapitalExpendituresIncurredButNotYetPaid
us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType, us-gaap:ContractWithCustomerSalesChannel
us-gaap:ConcentrationRiskPercentage1

us-gaap:ContractWithCustomerLiabilityRevenueRecognized
us-gaap:Range, us-gaap:StatementGeographical, us-gaap:CreditFacility, us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:VariableRate
us-gaap:DebtInstrumentBasisSpreadOnVariableRate1
us-gaap:Range, us-gaap:StatementGeographical, us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:VariableRate
us-gaap:StatementGeographical, us-gaap:CreditFacility, us-gaap:LongtermDebtType
us-gaap:StatementGeographical, us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:VariableRate
us-gaap:StatementGeographical, us-gaap:DebtInstrument, us-gaap:VariableRate
us-gaap:StatementGeographical, us-gaap:DebtInstrument
us-gaap:DebtInstrumentPeriodicPaymentPrincipal
us-gaap:StatementGeographical, us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:DefinedBenefitPlanActuarialGainLoss

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets

us-gaap:DefinedBenefitPlanInterestCost

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost

us-gaap:DefinedBenefitPlanServiceCost

us-gaap:DefinedContributionPlanCostRecognized

us-gaap:Depreciation

us-gaap:DerivativeGainLossOnDerivativeNet

us-gaap:DividendsCash
us-gaap:StatementEquityComponents

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:FinanceLeasePrincipalPayments

us-gaap:ForeignCurrencyTransactionGainLossBeforeTax

us-gaap:IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance

us-gaap:IncreaseDecreaseInOperatingCapital

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:InterestIncomeDepositsWithFinancialInstitutions

us-gaap:OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax

us-gaap:OtherNoncashIncomeExpense

us-gaap:PaymentsForDerivativeInstrumentInvestingActivities

us-gaap:PaymentsForProceedsFromOtherInvestingActivities

us-gaap:PaymentsForRestructuring
us-gaap:RestructuringCostAndReserve
us-gaap:SubsequentEventType
us-gaap:PaymentsToAcquireAvailableForSaleSecuritiesDebt

us-gaap:PaymentsToAcquireShortTermInvestments
us-gaap:RetirementPlanSponsorLocation, us-gaap:SubsequentEventType
us-gaap:PensionAndOtherPostretirementBenefitContributions

us-gaap:ProceedsFromDerivativeInstrumentInvestingActivities

us-gaap:ProceedsFromIssuanceOfOtherLongTermDebt

us-gaap:ProceedsFromLongTermLinesOfCredit
us-gaap:StatementGeographical, us-gaap:CreditFacility, us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:StatementGeographical, us-gaap:CreditFacility, us-gaap:LongtermDebtType

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt

us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment

us-gaap:ProceedsFromShortTermDebt

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax
us-gaap:StatementEquityComponents

us-gaap:RepaymentsOfLongTermLinesOfCredit
us-gaap:StatementGeographical, us-gaap:CreditFacility, us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:StatementGeographical, us-gaap:CreditFacility, us-gaap:LongtermDebtType

us-gaap:RepaymentsOfOtherLongTermDebt

us-gaap:RepaymentsOfShortTermDebt

us-gaap:RestructuringCharges
us-gaap:RestructuringCostAndReserve
us-gaap:RestructuringPlan

us-gaap:RestructuringReserveTranslationAndOtherAdjustment
us-gaap:RestructuringCostAndReserve
us-gaap:StatementEquityComponents
us-gaap:SharesPaidForTaxWithholdingForShareBasedCompensation
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation
us-gaap:StatementEquityComponents

amkr:Capitalexpenditurespayable
us-gaap:FairValueByFairValueHierarchyLevel
amkr:CashandCashEquivalentsandDebtSecuritiesAvailableforsaleFairValueDisclosure
us-gaap:RetirementPlanSponsorLocation, us-gaap:SubsequentEventType
amkr:ConversionOfSeverancePlanObligationToDefinedContributionLiability

amkr:DeferredTaxAssetsOperatingLeaseLiabilities

amkr:DeferredTaxAssetsOtherDeferredLiabilities

amkr:DeferredTaxAssetsTaxDeferredExpenseReservesandAccrualsInterestExpense

amkr:DeferredTaxLiabilitiesOperatingLeaseRightofuseAsset

amkr:DeferredTaxLiabilitiesUnbilledReceivables

amkr:FinanceLeaseRightofUseAssetBeforeAccumulatedAmortization

amkr:LesseeLeaseNotYetCommencedLiability
amkr:OtherDeferredCashCompensation
amkr:PaymentsRemainingWithLocalPensionFund

amkr:PropertyPlantandEquipmentandFinanceLeaseRightofUseAssetAccumulatedDepreciationandAmortization

amkr:PropertyPlantandEquipmentandFinanceLeaseRightofUseAssetafterAccumulatedDepreciationandAmortization

amkr:PropertyPlantandEquipmentandFinanceLeaseRightofUseAssetbeforeAccumulatedDepreciationandAmortization

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
us-gaap:CashAndCashEquivalents
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
us-gaap:CashAndCashEquivalents
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis
us-gaap:CashAndCashEquivalents
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue

us-gaap:AvailableForSaleSecuritiesDebtSecurities
us-gaap:CashAndCashEquivalents
us-gaap:CashAndCashEquivalents, us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument
us-gaap:FinancialInstrument

us-gaap:ContractWithCustomerLiability

us-gaap:DebtInstrumentCarryingAmount
us-gaap:DebtInstrument
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:LongtermDebtType
us-gaap:StatementGeographical, us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:StatementGeographical, us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType
us-gaap:DebtInstrumentFaceAmount
us-gaap:StatementGeographical, us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:VariableRate
us-gaap:StatementGeographical, us-gaap:DebtInstrument, us-gaap:VariableRate
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis, us-gaap:LongtermDebtType
us-gaap:DebtInstrumentFairValue
us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementBasis, us-gaap:LongtermDebtType
us-gaap:StatementGeographical, us-gaap:CreditFacility, us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrumentInterestRateEffectivePercentage
us-gaap:StatementGeographical, us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet
us-gaap:StatementGeographical, us-gaap:CreditFacility, us-gaap:LongtermDebtType
us-gaap:DebtInstrumentUnusedBorrowingCapacityAmount
us-gaap:StatementGeographical, us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:DebtSecuritiesAvailableForSaleAmortizedCostCurrent

us-gaap:DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible
amkr:OtherDeferredCashCompensation
us-gaap:DeferredCompensationCashbasedArrangementsLiabilityCurrentAndNoncurrent

us-gaap:DeferredIncomeTaxAssetsNet

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsPropertyPlantAndEquipment

us-gaap:DeferredTaxAssetsTaxCreditCarryforwards

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities

us-gaap:DeferredTaxAssetsUnrealizedCurrencyLosses

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment

us-gaap:DeferredTaxLiabilitiesTaxDeferredIncome

us-gaap:DeferredTaxLiabilitiesUnrealizedCurrencyTransactionGains

us-gaap:DefinedBenefitPlanAccumulatedBenefitObligation

us-gaap:DefinedBenefitPlanAmountsRecognizedInBalanceSheet

us-gaap:DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease

us-gaap:DefinedBenefitPlanBenefitObligation

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo

us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear

us-gaap:DefinedBenefitPlanFairValueOfPlanAssets
us-gaap:DefinedBenefitPlanByPlanAssetCategories
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:DefinedBenefitPlanFundedStatusOfPlan

us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsPlanAssets

us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation

us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation

us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets
us-gaap:Currency, us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeAssetNotionalAmount
us-gaap:DerivativeInstrumentRisk
us-gaap:Currency, us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:DerivativeAssets
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:EmployeeRelatedLiabilitiesCurrent
us-gaap:AwardType
us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized

us-gaap:FinanceLeaseLiability

us-gaap:FinanceLeaseLiabilityCurrent

us-gaap:FinanceLeaseLiabilityPaymentsDue

us-gaap:FinanceLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:FinanceLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFive

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFour

us-gaap:FinanceLeaseLiabilityPaymentsDueYearThree

us-gaap:FinanceLeaseLiabilityPaymentsDueYearTwo

us-gaap:FinanceLeaseLiabilityUndiscountedExcessAmount

us-gaap:FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization

us-gaap:FinanceLeaseWeightedAverageDiscountRatePercent
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:HeldToMaturitySecurities
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:HeldToMaturitySecuritiesFairValue

us-gaap:InterestPayableCurrent

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:LiabilityForUncertainTaxPositionsNoncurrent
us-gaap:StatementGeographical, us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:LineOfCreditFacilityInterestRateAtPeriodEnd
us-gaap:StatementGeographical, us-gaap:CreditFacility, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType
us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity
us-gaap:CreditFacility, us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:LineOfCreditFacilityRemainingBorrowingCapacity

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo
us-gaap:Range, us-gaap:StatementGeographical, us-gaap:DebtInstrument
us-gaap:LongtermDebtWeightedAverageInterestRate
us-gaap:Range, us-gaap:StatementGeographical, us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:StatementGeographical, us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent
us-gaap:IncomeTaxAuthority
us-gaap:OperatingLossCarryforwards

us-gaap:PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesNoncurrent

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent

us-gaap:PostemploymentBenefitsLiabilityCurrent
amkr:OtherDeferredCashCompensation
amkr:OtherDeferredCashCompensation
us-gaap:PostemploymentBenefitsLiabilityCurrentAndNoncurrent
amkr:OtherDeferredCashCompensation
us-gaap:PostemploymentBenefitsLiabilityNoncurrent

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization
us-gaap:StatementGeographical

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization

us-gaap:PurchaseObligation

us-gaap:RestrictedCashAndCashEquivalentsAtCarryingValue

us-gaap:RestrictedCashAndCashEquivalentsNoncurrent

us-gaap:RestructuringAndRelatedCostCostIncurredToDate1
us-gaap:RestructuringCostAndReserve

us-gaap:RestructuringAndRelatedCostExpectedCostRemaining1
us-gaap:RestructuringCostAndReserve

us-gaap:RestructuringReserve
us-gaap:RestructuringCostAndReserve
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
us-gaap:PlanName
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1

us-gaap:SupplementalUnemploymentBenefitsSeveranceBenefits
us-gaap:IncomeTaxAuthority
us-gaap:TaxCreditCarryforwardAmount
us-gaap:IncomeTaxAuthority, us-gaap:TaxCreditCarryforward

us-gaap:TreasuryStockShares
us-gaap:StatementEquityComponents

us-gaap:UnbilledReceivablesCurrent

us-gaap:UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued
us-gaap:ValuationAllowancesAndReservesType
us-gaap:ValuationAllowancesAndReservesBalance

Plots across concepts


IncomeStatement
Other Comprehensive Income Loss Net Of Tax
Expenses
Other Nonoperating Income Expense
Balance Sheet
Goodwill
Assets
Operating Lease Right Of Use Asset
Current Assets
Other Assets Current
NonCurrent Assets
Goodwill
Liabilities
Operating Lease Liability
Current Liabilities
Accrued Income Taxes Current
Noncurrent Liabilities
Deferred Income Tax Liabilities Net
Stockholders Equity
Common Stock Value
CashFlow
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInOperatingActivities
Net Income Loss
NetCashProvidedByUsedInInvestingActivities
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInFinancingActivities
Net Cash Provided By Used In Financing Activities
Shares
Treasury Stock Shares
OperatingLeaseLiability
Operating Lease Liability Current
NonoperatingIncomeExpense
Nonoperating Income Expense
LesseeOperatingLeaseLiabilityPaymentsDue
Lessee Operating Lease Liability Payments Due Year Four
AccountsReceivable
Allowance For Doubtful Accounts Receivable Current

Tables

  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:CommonStockValue █████████████████████████▇▇▇▇▆▆▆▆▂▂▂▂▂▂▂▂▂▁0.290.290.2890.2880.2870.2870.2870.2860.2850.2850.2850.2850.2850.2850.2850.2850.2850.2850.2840.2830.2830.2830.2830.2830.2830.2820.2820.2820.2820.2620.2620.2620.2620.1980.1980.1980.1980.1980.1970.1970.1970.1970.183NANANA
us-gaap:CommonStockSharesIssued ██████████▁███▁██████████████▇▇▇▇▆▆▆▆▆▆▆▆▆▅290.115289.865288.923288.043287.319287.093286.877285.607285.51285.430.285352285.335285.322285.2840.285129285.019284.996284.552284.479283.483282.902282.786282.724282.597282.532282.439282.231282.057281.782262.251262.109261.877261.835197.758197.709197.662197.599197.517197.359197.292197.25197.178183.467NANANA
us-gaap:CommonStockSharesAuthorized 500.0NA500.0NA500.0500.0500.0500.0500.0500.00.5500.0500.0500.00.5500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0NANANA
us-gaap:PreferredStockSharesAuthorized 10.0NA10.0NA10.010.010.010.010.010.00.0110.010.010.00.0110.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.0NANANA
us-gaap:CommonStockSharesOutstanding ██████████▁███▁██████████████▇▇▇▇▅▅▅▆▆▆▆▇▇▆243.964243.714242.829241.955241.236241.016240.805239.624239.532239.4580.239385239.374239.366239.3340.239184239.079239.063238.717238.665237.695237.141237.045237.005236.906236.869236.804236.627236.489236.252216.821216.702216.513216.486152.427152.397152.365160.701167.76168.628186.256197.126197.061183.42NANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding █▁245.551245.129NA242.592241.41241.333NA239.937239.508239.414NA239.766239.804239.816NA239.64239.679238.685NA238.192237.434237.025NA236.974237.321237.424NA237.509236.872235.497NA235.143235.111235.087NA237.06166.009250.688NA278.068280.009277.585NA282.495282.644282.509
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic █▁243.863243.267NA241.675241.098240.919NA239.586239.508239.414NA239.37239.351239.214NA239.068238.863238.685NA237.353237.09237.025NA236.888236.84236.708NA236.337232.891216.757NA216.499160.886152.411NA154.365165.956167.866NA195.364197.084194.067NA183.34183.274183.226
 us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities amkr:StockOptionsAndRestrictedShares0.087NANA0.8584.264.321NA6.3477.6187.123NA3.6563.6443.369NA3.4833.1935.449NA1.2842.0054.033NA3.4771.7181.4NA1.1391.1144.265NA4.9514.0924.236NA4.8564.7374.408NA6.1225.3255.531NANANANA
us-gaap:EarningsPerShareBasic ███▆▅▅▇▅▂▁▃▅▄▃▇▅█▂▇▅▂▂▂▃▃▃▃▄▄▃▄▃▄▃▃▄▂▃▄▄▃▄▅▇▆▅0.520.490.520.380.230.270.410.23-0.04-0.10.120.240.140.040.420.230.48-0.040.420.250.020.0-0.0400000000000000360.120.040.120.0500000000000000440.20.210.090.199999999999999960.120.180.090.050000000000000020.140.00.070.139999999999999960.140.070.130.270.420.320.24
us-gaap:EarningsPerShareDiluted ███▆▅▅▇▅▂▁▃▅▄▃▇▅█▂▇▅▂▂▂▃▃▃▃▄▄▃▄▃▄▃▃▃▂▃▃▃▃▃▄▆▅▄0.510.490.520.380.230.260.410.23-0.04-0.10.120.240.140.040.420.230.48-0.040.420.250.020.0-0.0400000000000000360.120.040.120.0500000000000000440.20.210.090.169999999999999980.110.140.070.049999999999999990.110.00.060.109999999999999990.110.070.10.210000000000000080.30.230.18
  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
  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 _ _▇▇█▆▄▄▆▄▁▁▄▅▃▂▅▅█▂▆▆▂▁▁▃▂▃▂▄▃▂▄▃▃▂▂▃▁▂▂▂▃▃▄155.115144.448159.179127.46986.52484.073118.38578.85522.5113.4275.38192.70353.94136.119110.12898.237168.29324.655126.689114.61530.54222.09420.92251.29538.64353.97939.96875.1860.96145.35174.55458.01458.45341.08842.40954.01821.96434.30143.70243.99555.97449.99986.209NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:ComprehensiveIncomeNetOfTax █▇█▆▅▅▆▅▂▁▄▄▃▃▇▅▇▂▅▅▄▃▃▄▂▃▂▄▄▃▄▃▃▃▂▃▂▃▃▃▃▃126.096108.362130.63596.18854.98764.48391.01953.996-3.589-25.23532.37850.00621.40524.596104.9853.481114.6923.8156.37765.99631.69119.01320.56132.7934.22230.019-2.25437.3738.07624.58233.74327.88226.9039.2725.83223.752.27610.35216.67530.1215.76624.639NANANANA
us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest █▇█▆▅▅▆▅▂▁▄▄▃▃▇▅▇▂▅▅▄▃▃▄▂▄▂▄▄▃▄▃▃▃▂▃▂▃▃▃126.748108.572130.92696.93455.70365.09191.68854.412-3.145-25.02432.97750.63621.99825.247106.15354.676115.6444.67257.31667.04832.34419.48320.9733.644.84530.935-1.26138.44338.96125.13234.46328.53727.5059.6566.35824.0092.56710.1617.38630.076NANA54.72982.822NANA
us-gaap:CostOfGoodsAndServicesSold █▇██▆▆▆▅▄▄▅▆▅▅▆▆▄▄▄▅▄▄▂▂▂▂▄▃▂▂▂▂▂▂▂▂▂▁▂▂▂▁▂▂▂▁1133.7151060.6161092.541112.938980.589963.708955.48901.677771.851774.203898.901943.485895.967867.548922.929918.389817.212770.694794.426872.214785.72745.798568.024607.762621.624607.928733.042659.607616.745567.224604.702626.979607.68572.576609.934578.566597.207550.029571.942617.768557.816538.264591.266605.713569.966508.782
us-gaap:GainsLossesOnExtinguishmentOfDebt NANA-2.123-0.4910.0-0.428-0.001-0.179-8.3560.0-0.345-1.149-0.018NA0.0-4.424NANA0.00.0NANA0.00.0NANA0.00.0NANA-0.7110.0-11.619NA-1.1990.00.0NA0.00.0-15.531NA0.0-0.235-17.807NA
us-gaap:GrossProfit ███▇▅▅▆▄▂▂▄▅▄▄▆▆▄▃▆▆▃▂▁▂▂▃▂▃▃▂▃▃▃▂▂▂▁▂▂▂▂▂▄▅▄▃272.82265.534278.501241.085192.32188.908222.984182.24123.454120.761182.37200.707169.717157.771225.494216.638172.235142.906227.187213.8131.606122.884102.62126.6115.098134.947120.071153.217150.714128.82150.173141.008138.379114.953112.722116.78789.32104.981111.827122.239129.817126.686159.343188.258179.199136.956
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments █▇█▆▅▅▆▄▁▂▄▅▃▂▅▅█▁▇▅▂▂▁▃▂▃▂▄▃▂▄▃▂▂142.447131.686139.644108.6569.04569.343100.5863.627-3.109-1.28857.70671.61843.81512.67689.16174.382149.032-8.705119.73685.2278.7261.468-13.12243.9337.26629.45813.06359.78342.88120.35152.60634.99518.64617.74NANANANANANANANANANANANA
us-gaap:IncomeTaxExpenseBenefit ▅▅▅▅▅▄▃▄▄▆▇▅▅▃▁▆█▃▆▇▃▃▃▆▄▄▃▅▅▄▆▅▁▄▄▄▂▃▃▃▄▃▅▅▃▃15.98911.66712.67915.75312.9054.8460.7649.1415.89721.3828.81214.32610.6312.481-12.78218.75232.5730.43918.53424.0863.361.8730.83716.5684.6315.9991.4214.98512.5114.92916.68512.17-10.2384.0297.9929.538-3.8913.362-2.3512.4993.5943.38210.05810.321-1.2-0.167
us-gaap:InterestExpense █▁12.76412.673NA16.40416.01217.045NA16.98818.65319.27318.03819.7721.12720.01120.10620.32122.15821.25421.17221.48820.81616.19217.0917.69522.84523.77734.91723.7822.53723.72224.81826.10423.73922.07823.24719.68922.45218.58618.2217.59419.60918.78919.20219.61424.4122.369
us-gaap:NetIncomeLoss ███▆▅▅▇▅▂▁▃▅▄▃▇▅▇▂▇▅▂▂▂▃▃▃▃▄▄▃▄▃▃▃▂▃▂▃▃▃▃▃▄▆▅▄125.806119.809126.67492.15155.42463.88999.14754.07-9.45-22.87928.29556.66232.5919.544100.7754.435115.507-10.006100.26360.0894.713-0.875-9.72128.1749.57828.78113.13547.09749.52120.63340.83825.34929.72713.3827.14622.3170.58111.77424.8527.36714.48825.10350.60478.0259.0544.297
us-gaap:NetIncomeLossAttributableToNoncontrollingInterest ▅▃▄▆▆▅▅▄▄▃▅▅▅▅██▇▆▇▇▅▄▄▆▅▇▇▇▆▅▆▅▅▄▅▃▄▁▆▂▂▅▃▄▂▁0.6520.210.2910.7460.7160.6080.6690.4160.4440.2110.5990.630.5930.6511.1731.1950.9520.8620.9391.0520.6530.470.4090.8470.6230.9160.9931.0730.8850.550.720.6550.6020.3840.5260.2590.291-0.1920.711-0.044-0.0430.6630.1570.35-0.107-0.224
us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic █▁125.806119.809NA92.15155.42463.889NA54.07-9.45-22.879NA56.66232.5919.544NA54.435115.507-10.006100.26360.0894.713-0.875-9.68428.1749.55728.71313.14646.94849.33720.52840.66825.19429.47613.3167.01522.2620.57911.73624.77727.26114.4324.98750.50377.86158.927NA
us-gaap:NonoperatingIncomeExpense ▇▇▆▆▆▆▆▆▄▆▆▅▇▅▅▅▆▃█▄▅▅▃█▃▅▄▆▆▄▄▅▂▅▄▅▄▆▅▇▂▅▄▄▁▄-12.668-12.762-19.535-18.819-17.479-14.73-17.805-15.228-25.619-14.708-17.675-21.085-10.126-23.443-20.967-23.855-19.261-33.36-6.953-29.388-21.816-20.626-34.044-7.362-31.377-24.521-26.905-15.397-18.08-25.0-26.627-19.84-38.362-23.293-26.745-21.904-24.983-19.357-20.492-14.173-37.935-20.851-25.39-29.163-43.005-25.081
us-gaap:OperatingExpenses ████▇▇▇▇▇▇▇▇████▁█▇▇▇▇▆▅▅▆▆▅▆▆▅▆▆▅▅▄▅▅▅▅▅▅▅▅▅▅117.705121.086119.322113.616105.796104.835104.599103.385100.944107.341106.989108.004115.776121.652115.366118.4013.942118.251100.49899.185101.064100.7981.69875.30576.45580.96880.10378.03789.75383.46975.61982.99479.92673.86570.31362.76967.35670.6868.12578.24473.84376.68773.13470.40478.45167.969
us-gaap:OperatingIncomeLoss ▇▇█▆▄▄▆▄▁▁▄▅▃▂▅▅█▂▆▆▂▁▁▃▂▃▂▄▃▂▄▃▃▂▂▃▁▂▂▂▃▃▄▆▅▄155.115144.448159.179127.46986.52484.073118.38578.85522.5113.4275.38192.70353.94136.119110.12898.237168.29324.655126.689114.61530.54222.09420.92251.29538.64353.97939.96875.1860.96145.35174.55458.01458.45341.08842.40954.01821.96434.30143.70243.99555.97449.99986.209117.854100.74868.987
us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax ▅▄▆▆▅▅▅▅▆▅▆▅▄▇▅▅▅▇▁▆█▇▅▅▅▅▅▅▄▅▆▅▅▅▅▆▆▅0.278-11.443.5654.191-0.6990.475-0.9630.0515.918-2.2247.601-6.611-11.14415.091-0.692-0.969-0.83313.586-46.3785.88326.95519.864-0.0440.010.01-0.122-0.058-0.098-12.4930.6853.917-1.661-2.899-4.252-2.7921.2141.659-2.769NANANANANANANANA
us-gaap:OtherComprehensiveIncomeLossNetOfTax ▅▄▆▆▅▅▄▅▆▅▆▅▄▇▆▅▅▆▁▆█▇█▆▅▅▄▄▄▆▄▅▅▅▅▅▅▅0.29-11.4473.9614.037-0.4370.594-8.128-0.0745.861-2.3564.083-6.656-11.18615.0524.21-0.954-0.81513.816-43.8865.90726.97819.88830.2824.619-5.3561.238-15.389-9.727-11.4453.949-7.0952.533-2.824-4.11-1.3141.4331.695-1.422NANANANANANANANA
us-gaap:OtherNonoperatingIncomeExpense ▅▅▃▄▄▅▄▅▃▆▅▄▇▄▄▄▅▂█▃▅▄▁▇▃▅▇▇▆▅▄▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅0.096-0.089-4.828-2.415-1.4672.315-1.1321.76-6.9664.5650.363-1.31511.001-3.432-0.861-3.3543.19-10.86415.461-6.6570.242-3.192-15.71211.576-7.290.4989.2549.6265.699-0.036-2.5580.0070.1080.2290.0750.3590.5180.6340.3350.2260.3250.1440.1440.0850.1490.241
us-gaap:ProfitLoss ███▆▅▅▇▅▂▁▃▅▄▃▇▅█▂▇▅▂▂▂▃▃▃▃▄▄▃▄▃▃▃▂▃▂▃▃▃▃▃▄▆▅▄126.458120.019126.96592.89756.1464.49799.81654.486-9.006-22.66828.89457.29233.18410.195101.94355.63116.459-9.144101.20261.1415.366-0.405-9.31229.02110.20129.69714.12848.1750.40621.18341.55826.00430.32913.7667.67222.5760.87211.58225.56127.32314.44525.76650.76178.3758.94344.073
us-gaap:ResearchAndDevelopmentExpense ██▇▆▅▅▆▆▆▆▇▇▇▇▇██▇▆▄▅▄▃▃▃▂▂▂▃▃▂▃▂▂▁▂▂▁▁▁▁▁▁▁▁▁43.51644.31841.10335.83531.53632.25332.77132.92736.18635.75437.63637.54141.07640.92937.95642.83444.26841.55633.06126.82230.16827.15522.89821.07320.0218.02617.30316.43722.07921.04517.36418.64714.30814.30613.35413.47213.86713.42512.46513.23312.55912.12911.09712.66912.09511.673
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax █▇██▆▆▆▅▃▃▅▆▅▄▆▆▄▃▄▅▃▃▁▂▂▂▃▃▂▁▂▂▂▁▂▁▁▁▁▂▁▁▂▂▂▁1406.5351326.151371.0411354.0231172.9091152.6161178.4641083.917895.305894.9641081.2711144.1921065.6841025.3191150.4781148.8841008.385899.2841021.6131086.014917.326868.682670.644734.362736.722742.875853.113812.824767.459696.044754.875767.987746.059687.529722.656695.353686.527655.01683.769740.007687.633664.95750.609793.971749.165645.738
us-gaap:Revenues █▇██▆▆▆▅▃▃▅▆▅▄▆▆▄▃▄▅▃▃▁▂▂▂▃▃▂▁▂▂▂▁▂▁▁▁▁▂▁▁▂▂▂▁1406.5351326.151371.0411354.0231172.9091152.6161178.4641083.917895.305894.9641081.2711144.1921065.6841025.3191150.4781148.8841008.385899.2841021.6131086.014917.326868.682670.644734.362736.722742.875853.113812.824767.459696.044754.875767.987746.059687.529722.656695.353686.527655.01683.769740.007687.633664.95750.609793.971749.165645.738
us-gaap:SellingGeneralAndAdministrativeExpense ▇▇▇▇▇▆▇▆▄▆▅▆▇█▇▇▅▇▅▆▆▆▃▂▃▄▄▄▅▄▃▄▅▃▃▁▂▃▂▅▄▄▄▃▅▃74.18976.76878.21977.78174.2672.58275.1370.45864.75871.58769.35370.46374.780.72377.4175.56767.78376.69567.43772.36370.89673.63558.854.23256.43562.94262.861.667.67462.42458.25564.34765.61859.55956.95949.29753.48957.25555.6665.01161.28464.55862.03757.73566.35656.296
  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 █▇▇▇▇▆▆▅▅▆▅▅▅▅▅▅▅▅▄▅▄▄▄▃▃▃▃▄▃▃▃▃▃▂▂▂▁▁▁▁▁▁▁5567.7795053.4655022.3115136.625115.3884811.6374695.6154405.934309.2844847.1864495.4474495.4694381.6814391.714521.5094412.2694384.1314178.3214092.0864241.1144120.8483959.1544031.33647.4883644.2283633.8763635.4053759.9413609.3733503.3393427.2983476.9183416.3333074.7313025.2153143.5572845.1842804.2122773.0472889.3872817.6952701.5732736.822NANANA
us-gaap:Liabilities █▅▆▇█▆▆▅▅█▆▆▅▆▇▇▇▆▆▇▇▆▇▄▄▄▅▅▅▅▄▅▅▄▄▅▂▂▂▂▂▁▂2984.7092591.2282668.3522913.8832998.462753.0122705.3762518.312478.1083014.6042639.5472673.6282611.5232644.6362830.732829.4192857.1772769.3922688.6822901.0542850.8482713.9872806.1672444.0832475.0352470.2922504.4692628.8712518.3232511.9792462.3582547.5612516.3342397.8372358.4212483.7312167.9172096.8182071.8262125.8592036.3111937.1412100.141NANANA
us-gaap:LiabilitiesAndStockholdersEquity █▇▇▇▇▆▆▅▅▆▅▅▅▅▅▅▅▅▄▅▄▄▄▃▃▃▃▄▃▃▃▃▃▂▂▂▁▁▁▁▁▁▁5567.7795053.4655022.3115136.625115.3884811.6374695.6154405.934309.2844847.1864495.4474495.4694381.6814391.714521.5094412.2694384.1314178.3214092.0864241.1144120.8483959.1544031.33647.4883644.2283633.8763635.4053759.9413609.3733503.3393427.2983476.9183416.3333074.7313025.2153143.5572845.1842804.2122773.0472889.3872817.6952701.5732736.822NANANA
us-gaap:StockholdersEquity ██▇▇▆▆▆▅▅▅▅▅▅▅▅▄▄▄▄▄▃▃▃▃▃▃▃▃▃▂▂▂▂▁▁▁▁▁▁▁▂▁▁2554.2482433.9172325.6992194.6182089.4042031.5171963.7391861.6391805.3111807.0111830.541796.9441745.7511723.1251667.3281560.4371505.5941388.3861383.5881321.0481251.8971227.5821207.8831186.4411152.9531147.9671116.2351117.3621078.415979.61953.74918.877890.174667.671657.955651.513669.213699.631693.266756.284774.096757.101630.013NANANA
  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 █▇▇▇█▇▆▄▄▆▄▄▃▄▄▄▄▄▃▄▃▂▃▂▂▂▂▂▂▃▂▃▃▂▂▂▁▁▁▂▂▁▁2371.0422114.0542132.9322268.5712341.7952153.7032001.5331663.0011513.122002.9291671.2081611.2361458.1791491.5841650.871566.4721596.6321494.6651409.6961487.0461362.5271219.5731317.481104.7711152.3781205.951197.9481270.3851247.9251280.7591232.4161288.7831337.1551132.7131091.4081182.941972.299992.405996.831136.4491110.9151010.7831062.067NANANA
us-gaap:CashAndCashEquivalentsAtCarryingValue ▅▄▄▃▅▇▆▃▃█▄▃▁▂▃▃▄▄▃▃▂▂▃▂▂▂▂▂▃▄▄▃▄▂▂▃▁▁▂▂▂▁▂▂▂▂724.785650.274698.002566.745783.228941.447894.948598.753551.4381055.402681.569547.665380.262495.183596.364519.449657.627613.974549.518549.836499.32413.465523.172430.444442.297494.189449.946485.592525.935628.585610.442591.31636.007466.702413.048549.085351.183381.132434.631483.39475.471392.951404.998417.498437.803425.473
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents ▅▄▄▃▅▇▆▃▃█▄▃▁▂▃▂▄▃▃729.22654.772702.197570.777787.186945.324898.532604.217556.9061060.92688.051554.12385.765500.844602.851525.673663.852620.237555.495NANANA527.348NANANA454.75NANANANANANANANANANANANANANANANANANANA
us-gaap:ShortTermInvestments ▄▄▄█▇▂▁160.941163.693133.769356.15310.63458.2636.348NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:AccountsReceivableNetCurrent █▇▇▇▆▆▆▆▅▅▅▆▆▅▅▅▄▃▃▄▄▃▃▂▂▂▃▃▂▂▂▂▂▂▂▂▁▁▁▁▁▁▂1064.586950.015962.643990.637898.717880.629850.753803.104702.466684.914724.456797.678795.75734.953692.287691.7604.366545.794563.107630.984579.794537.745526.143410.256438.494433.092469.683483.33455.838406.797382.037429.788411.699379.37389.699359.318352.453345.764298.543351.636348.127349.398392.327NANANA
us-gaap:InventoryNet █▆▅▅▆▃▂▂▂▃▃▃▃▃▆▆▅▄▄▄▃▃▃▂▂▃▂▃▂▁▂▂▃▃▃▂▂▂▁▂▂▁▁374.109307.545297.293299.83306.902238.201220.602216.663217.638227.502230.589228.108243.019228.611326.492314.207295.75267.208267.99272.589251.627237.0238.205208.213219.993227.605223.379229.557205.668197.297200.423222.663231.974235.33227.439218.343205.778205.4198.427224.046217.735185.642191.072NANANA
us-gaap:OtherAssetsCurrent ▄▃▃▆▃▂▂▃▃▂▂▂▃▂▂▃▃▇▁▂▁▁▁▅▅▅▅█▆▄▂▃▅▄▄▃▃▃▂▂▂▄▃45.68441.59440.21854.26441.38334.55334.6241.89138.98832.52232.00535.22637.14830.83733.72739.11636.88965.68927.08131.63729.78629.36327.9653.85848.91248.38352.25969.22557.80345.39933.32838.13150.33145.77845.44438.96541.57337.68335.35235.33232.91743.92837.918NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType amkr:SoftwareAndComputerEquipment████▇▇▇▆▆▆▆▅▅▄▄▄▃▅▅▅▄▄▃▂▂▂▂▅▅▃▃▃▃▂▃▃▂▂▂▂▁230.312229.585231.171228.816224.265222.459220.264219.463218.268216.879213.44209.051206.219203.945200.5198.723197.255208.655205.969207.965204.683202.92197.266186.218188.605186.868185.243206.763206.247194.974193.641194.535191.68188.287191.132191.332190.207187.508186.378183.599179.904NA176.376NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:BuildingAndBuildingImprovements█████▇▇▇▇▇▇▇▇▆▆▆▆▅▅▃▃▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁1639.3681636.1111625.3551619.451585.9151575.3521571.6531571.3151569.7851549.2521523.0651510.0821496.6831443.2321384.8461379.5591375.0591339.371362.0071069.4481033.8751023.491010.201946.805945.429944.246940.846937.962919.379914.95911.258897.495887.42876.341904.919901.946896.019890.981871.97869.165867.315NA838.237NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:ConstructionInProgress▃▂▂▁▂▁▁▁▁▁▂▂▂▂▃▂▂▂▂▇██▇▅▃▂▁▁▂▁▁▁▁▁▁▁▂▁▁▁▁125.19484.46548.60228.41452.71924.61812.59311.3316.75332.69944.38141.84357.33495.718104.9190.97285.08289.79987.037404.507434.891407.99352.607236.539138.83564.32439.26129.23348.4334.19927.03934.90132.52534.62124.6728.1345.52518.39426.81816.7817.573NA50.61NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:FurnitureAndFixtures▇▆▇▆▆▆▆▅▅▃▃▃▂▂▁▁▁█▇██▇▇▃▃▂▁▁▁▃▃▃▃▃▅▅▅▅▆▆▆20.82920.4720.77420.5520.29319.84419.7419.64418.87717.18617.20416.97716.66416.03615.72215.65415.43222.13321.31321.87521.70821.19821.25917.0216.87816.27415.34715.4315.45317.32717.4317.45917.24117.31219.19419.46919.42519.45419.73620.63520.451NA20.611NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:Land▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇█████▆▆▆▆▆▆▆▆▁▁▁▁▁▁▁▁▁▁219.127219.228221.304220.653219.969220.076219.785219.928219.991222.635222.884224.589225.493226.966224.894224.932225.048215.566240.719245.828245.116241.92237.815207.985207.985207.985207.985207.986207.986208.024208.048103.992103.992103.992106.338106.338106.338106.338106.338106.338106.338NA106.338NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:MachineryAndEquipment█▇▇▇▇▆▆▆▆▆▆▆▆▆▅▅▅▅▄▄▄▄▄▄▄▃▃▃▃▃▃▃▂▂▂▂▂▁▁▁▁6109.7775845.2215736.7975665.9435502.385335.4245303.7295298.8665266.1115217.5555196.935206.055131.5735025.0544938.2914875.9044732.8334580.44483.5234428.5314340.9874281.5614226.4014072.7334055.9983977.0693953.8913947.4833748.3853668.8753577.0453590.2263499.7243387.4473332.8553310.3513167.2863086.23016.432964.3632875.193NA2749.445NANANA
us-gaap:PropertyPlantAndEquipmentNet █▇▆▆▆▅▆▆▆▆▇▇▇▇▇▇▇▆▆▇▇▇▆▅▅▄▅▅▄▄▃▃▃▃▂▃▂▂▂▁▁▁▁2873.572623.472566.0022560.1952471.9772367.7462404.852466.0672515.5332564.1772650.4482714.0842754.962727.8782695.0652706.7152645.812551.7062564.6482619.4692625.1232616.2272579.0172284.9012229.0222167.792206.4762258.872153.8182033.3962006.5531947.4481885.2031825.1611819.9691832.3871751.6291691.541656.2141614.7861573.4781558.8351537.226NANANA
us-gaap:Goodwill ▆▆█▇▇▇▆▇▇▆▆▅▆▇▆▆▆▆▅██▂▁25.39225.48127.32526.74726.1426.23525.97626.10426.15925.44925.7224.81325.47226.54625.03625.07625.16125.22824.12227.90827.41720.8419.443NANANA0.0NANANANANANANANANANANANANANANANANANANA
us-gaap:DeferredTaxAssetsLiabilitiesNet NANA88.537NANANA90.335NANANA118.459NANANA115.043NANANA65.081NANANA65.854NANANA74.133NANANA57.289NANANA41.735NANANA42.615NANANA42.677NANANA
us-gaap:OperatingLeaseRightOfUseAsset ████████▇▇▁144.529141.247147.236149.727146.013147.985148.549141.467132.763122.9820.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherAssetsNoncurrent ███▆▆▅▅▄▅▆█▇▇▇█▅▅▄▃▄▄▄▅▅▅▅▅▄▁▁▂▆▂▂▁▂▁▂▁▃▃▃▃149.748145.648145.628128.293126.436112.701111.733106.417118.831128.72144.178141.44139.567142.041146.051109.782112.303102.45989.643102.482103.461100.292113.184109.014120.126119.767111.125100.03370.66672.87277.692129.26883.44974.82368.07478.15173.78474.16170.91389.36688.34288.30693.845NANANA
  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 █▆▇▆▆▆▆▄▄▄▅▅▅▅▆▆▄▄▄▅▄▃▄▁▁▁▁▇▅▃▂▃▅▃▄▅▄▃▃▄▃▃▄710.326602.962636.434611.965583.341562.633571.054477.9459.548459.383530.398548.864553.475527.91569.085562.33477.191453.686487.43517.745465.113407.698434.222279.26280.677287.129309.025626.609555.805416.789365.334432.49499.508432.599439.663500.17448.235424.163424.504470.146420.361406.11443.333NANANA
us-gaap:AccruedIncomeTaxesCurrent ▆▆▄▃▅▃▂▃▃▄▆▅▄▇█▆▆▄▆▅▄▄▃▄▃▆▅▄▃▃▃▂▂▂▂▁▁▂▁▁▁38.65639.53126.60220.26731.43918.58711.66114.84519.74827.11438.56735.08123.65852.36556.66444.17139.16425.45337.96131.31521.89924.3821.44829.27420.49338.07231.5827.01717.11714.65517.5288.54910.56511.4868.3414.9352.8037.4834.4465.5912.497NA10.422NANANA
us-gaap:AccruedLiabilitiesCurrent █▆▇▅▅▃▄▄▄▄▄▄▄▆██▇▇▇▇▅▆▄▄▃▅▄▅▄▄▄▅▃▃▃▂▂▁▁▂▁▁▂374.002304.556349.207298.708291.278236.464267.226253.876246.615245.796258.209271.067254.348311.408374.598385.659348.869338.663338.669346.613300.758306.285264.212251.65226.402272.62258.997292.619252.048258.558264.252290.843217.845232.185212.964197.798190.657173.572158.287204.807160.662165.388178.794NANANA
us-gaap:ContractWithCustomerLiabilityCurrent █▄▄▃▁▁▁56.034.930.327.014.96813.88116.177NANANA16.736NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:DebtCurrent ▂▂▃▂▃▃▃▂▃█▂▂▂▂▂▂▄▁▁▁▂▁▂▁▁▁▁▁▁▂▂▂▂▁▁▁▂▂▂▂▂▂▃134.912135.405149.007136.526148.872141.521144.479102.952198.23638.702114.57997.646115.057105.451123.848117.97313.00436.92735.19230.83496.21526.18376.770.00.030.05.010.010.066.3561.3556.3556.350.00.040.47569.35853.02759.395100.32299.275132.62150.081NANANA
us-gaap:DividendsPayableCurrent NANA9.713NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LiabilitiesCurrent █▆▆▆▅▄▄▃▄▇▄▅▅▅▆▆▆▄▃▄▄▃▄▂▂▁▁▃▂▂▁▂▂▁▁▂▁▁▁▂▁▁▂1679.6531316.8571315.9871375.371282.8351047.7491059.803992.2551038.8931467.6181158.4231171.3331161.6521168.0811361.7891355.7391388.0911039.1071005.6611074.961036.844940.111018.184752.191717.398701.395700.59929.228817.853741.697690.936779.683773.703664.784652.627738.443708.25650.762642.186775.275680.298704.118772.208NANANA
us-gaap:LongTermDebtCurrent ▃▃▄▃▄▄▄▁█134.912135.405149.007136.526148.872141.521144.479102.952198.23NA114.579NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OperatingLeaseLiabilityCurrent ███▇▇▇▆▆▅▅▁52.77250.34849.74847.26543.25142.08240.97239.13533.9229.8350.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherAccruedLiabilitiesCurrent ▇▆█▆▇▅▅▇▆▆▆▆▆▆▆▅▅▇▆▄▃▃▃▂▂▂▂▂▃▂▂▂▂▁▂▂▂▂▃▆▄60.03153.16464.96755.35457.74947.36448.55659.99955.79952.95754.48253.83754.09956.05455.10749.03950.75758.55455.01642.31639.36239.77538.29735.0134.44130.94131.36632.53435.99331.19331.82632.28734.10727.09233.31131.87734.39633.0639.82452.22240.897NA45.842NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:LongTermDebt ▁▂▂▅██▇▄▅1059.9331096.8971164.3021328.1911554.6641522.8331460.3511305.4321315.896NA1334.129NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LongTermDebtNoncurrent ▁▁▂▄▇▆▆▄▃▄▄▅▄▅▅▅▅▇▆▇▇▇▇▆▇▇▇▇▇████▆▆▆▃▃▃▂▂▂▂916.407952.3661005.3391182.5731396.3891371.5011305.7551195.0051109.9451215.2621217.7321267.9921214.5351240.1411240.5811243.6971220.2361450.7371364.6381473.2141465.5041433.4261444.1071365.3761415.5281420.6771450.8241450.9691451.1111511.2521516.391519.5271519.6611353.01320.01361.6651085.5451076.641062.2561000.638999.078960.908964.219NANANA
us-gaap:DeferredIncomeTaxLiabilitiesNet NANA6.508NANANA0.13NANANA0.238NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:MinorityInterest █████▇▇▇▇▇▇▇▇▆▆▆▆▅▅▅▅▄▄▄▄▄▄▃▃▃▂▂▂▂▂▂▁▁▁▁▁▁▁28.82228.3228.2628.11927.52427.10826.525.98125.86525.57125.3624.89724.40723.94923.45122.41321.3620.54319.81619.01218.10317.58517.2516.96416.2415.61714.70113.70812.63511.7511.210.489.8259.2238.8398.3138.0547.7637.9557.2447.2887.3316.668NANANA
us-gaap:OtherLiabilitiesNoncurrent █▅▅▅▄▄▄▄▄▄▄▃▃▃▃▃▃▄▄▅▅▅▅▅▆▆▆▁▁▁▁▁▁▂▂▁▂▂▁▁▁▁▁163.4298.236102.99691.74266.63165.94571.7467.42674.32476.02279.07154.40351.26445.23446.14450.87160.84267.17476.68286.26592.89288.82101.679101.564109.068120.193125.38214.88114.42316.0114.95912.80110.85519.47521.41517.56118.12919.00313.2886.45413.00812.33610.171NANANA
us-gaap:OperatingLeaseLiabilityNoncurrent ▇▇▇█████▇▇▁78.49277.65184.4288.25787.20489.73391.10785.09480.04973.8760.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo NANA36.85NANANANANANA27.59924.63NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree NANA19.974NANANANANANA19.32117.676NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour NANA10.213NANANANANANA11.2110.942NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive NANA7.925NANANANANANA9.1479.008NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive NANA17.255NANANANANANA26.09826.07NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  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 ██▇▇▆▆▆▅▅▅▅▅▅▅▅▄▄▄▄▄▃▃▃▃▃▃▃▃▃▂▂▂▂▁▁▁▁▁▁▁▂▁▁2554.2482433.9172325.6992194.6182089.4042031.5171963.7391861.6391805.3111807.0111830.541796.9441745.7511723.1251667.3281560.4371505.5941388.3861383.5881321.0481251.8971227.5821207.8831186.4411152.9531147.9671116.2351117.3621078.415979.61953.74918.877890.174667.671657.955651.513669.213699.631693.266756.284774.096757.101630.013NANANA
us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest ██▇▇▆▆▆▆▅▅▆▅▅▅▅▅▄▄▄▄▄▄▃▃▃▃▃▃▃▃▃▂▂▂▂▂▂▂▂▂▂▂▁▁▁2583.072462.2372353.9592222.7372116.9282058.6251990.2391887.621831.1761832.5821855.91821.8411770.1581747.0741690.7791582.851526.9541408.9291403.4041340.061270.01245.1671225.1331203.4051169.1931163.5841130.9361131.071091.05991.36964.94929.357899.999676.894666.794659.826677.267707.394701.221763.528781.384764.432636.681581.003497.147NA
us-gaap:CommonStockValue █████████████████████████▇▇▇▇▆▆▆▆▂▂▂▂▂▂▂▂▂▁0.290.290.2890.2880.2870.2870.2870.2860.2850.2850.2850.2850.2850.2850.2850.2850.2850.2850.2840.2830.2830.2830.2830.2830.2830.2820.2820.2820.2820.2620.2620.2620.2620.1980.1980.1980.1980.1980.1970.1970.1970.1970.183NANANA
us-gaap:AdditionalPaidInCapital ████▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▆▆▆▆▃▃▃▃▃▃▃▃▃▁1968.3391964.3311953.3781943.141934.0471931.0881927.7391915.4811913.1031911.1791909.4251908.1711906.9361905.6661903.3571901.3811899.971896.2861895.0891888.6411885.2781884.3971883.5921882.5291881.7131880.7531878.811877.4521875.5331813.941812.531811.1781810.2951614.6771614.1431613.4711612.841612.1121611.2421610.2741609.2191607.9421504.927NANANA
us-gaap:RetainedEarningsAccumulatedDeficit ██▇▇▆▆▆▅▅▅▅▅▅▅▅▄▄▃▃▃▃▃▃▃▃▃▃▃▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁788.567672.534562.502445.541353.39297.966234.077134.9380.8690.31113.18984.89428.232-4.359-42.851-143.621-198.056-313.563-303.557-403.82-463.909-461.025-460.15-450.429-478.603-488.181-516.962-530.097-577.194-626.715-647.348-688.186-713.535-743.262-756.644-763.79-786.107-786.688-798.462-823.312-850.679-865.167-890.27NANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▅▅▆▆▆▆▆▆▆▆▆▆▆▇▆▅▆▆▄██▅▄▁▁▁▁▃▃▄▄▅▄▅▅▅▅▅▅▅▅▅▅16.11315.82327.2723.30919.27219.70919.11527.24327.31721.45623.81219.72926.38537.57122.51918.30919.26320.0786.26250.14844.24117.804-2.084-32.366-36.985-31.629-32.867-17.478-7.7513.694-0.2556.844.3077.13111.24112.55511.1229.42710.84919.02416.26914.99115.457NANANA
us-gaap:TreasuryStockValue ████████████████████████████████████▆▅▅▃▁▁▁219.061219.061217.74217.66217.592217.533217.479216.301216.254216.219216.171216.135216.087216.038215.982215.917215.868214.7214.49214.204213.996213.877213.758213.576213.455213.258213.028212.797212.455211.571211.449211.217211.155211.073210.983210.921168.84135.418130.5649.8990.910.8620.284NANANA
us-gaap:MinorityInterest █████▇▇▇▇▇▇▇▇▆▆▆▆▅▅▅▅▄▄▄▄▄▄▃▃▃▂▂▂▂▂▂▁▁▁▁▁▁▁28.82228.3228.2628.11927.52427.10826.525.98125.86525.57125.3624.89724.40723.94923.45122.41321.3620.54319.81619.01218.10317.58517.2516.96416.2415.61714.70113.70812.63511.7511.210.489.8259.2238.8398.3138.0547.7637.9557.2447.2887.3316.668NANANA
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue ▅▅▅▄▄▄▄▄▄▄▄▄▄▄▄▄▄▃█▂▂▂▂▂▁▁▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▄▃▃2.5462.3932.3232.141.7371.831.7251.9441.7741.4681.2271.2351.2691.2871.2731.3561.4631.0535.7-0.823-0.821-0.805-0.789-0.815-0.879-1.3690.9340.9190.8750.9720.9060.8830.6480.5340.6720.6110.6350.8020.9631.0290.9972.0210.7820.74NANA
us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders ▁▁▁▁█0.150.150.150.1510.3NA0.150.30.15NA0.1360.140.1350.135NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  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 ▇▄█▄▃▂▇▃▃▁▆▅▁▃▅▅▂▂▆▅▃▃▄▅▁▄▅▄▂▃▄▄▂▂▂▃▂▁▃▃▃▃▄▄▂▂279.543176.788335.985191.646145.81396.589280.518114.404116.87152.057236.192220.83958.748147.631204.356213.95297.282102.677237.786218.417135.101138.098154.579195.08563.257165.024208.241170.415103.307131.946182.291174.395102.17698.674104.627141.97386.35756.106141.04141.895113.67120.227175.633176.45486.779103.729
us-gaap:NetCashProvidedByUsedInInvestingActivities ▅▅█▅▁▆▅▇▇▄▇▇▅▃▆▅▆▇▆▆▅▄▅▅▇▆▃▄▅▆▅▄▅▇▅▅▆▆▆▆▆▆▅▆▇▇-157.123-164.372-27.368-176.224-330.521-104.592-143.672-57.794-58.956-202.067-64.113-86.952-156.713-229.605-128.807-139.448-97.635-88.942-119.268-113.804-157.216-199.139-161.508-156.695-80.034-116.125-238.177-211.416-149.346-95.539-163.586-218.766-178.807-79.335-158.671-140.987-109.594-110.869-123.605-98.92-96.369-111.64-169.954-131.086-75.881-68.0
us-gaap:NetCashProvidedByUsedInFinancingActivities ▄▄▃▃▅▅▆▅▁█▄▅▅▄▅▃▅▅▄▄▅▄▅▄▄▅▅▅▄▅▅▅▆▅▄▆▅▅▄▄▅▄▅▄▅▅-48.095-49.444-180.557-235.70427.44755.095157.984-9.553-563.889523.708-41.21739.088-14.569-23.9252.053-212.49644.80940.748-95.501-57.297.438-56.91699.657-50.243-35.115-4.656-5.710.658-56.496-18.4472.2140.079244.94232.91-82.202196.63-6.9922.596-66.18-37.29265.077-20.482-19.223-66.3981.36-5.596
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect ▆▅▆▃▄▅▇▅▁█▆▆▄▄▆▄▅▆74.448-47.425131.42-216.409-158.13846.792294.31547.311-504.014372.869133.931168.355-115.079-102.00777.178-138.17943.61564.742NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  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:DepreciationDepletionAndAmortization ▇▇▆▆▆▆▆▆▆▇▇█▇▇███▇▇▇▇▇▅▆▆▆▆▅▄▄▄▄▃▃▃▃▂▂▂▂▂▂▂▂▁▁139.601135.39132.674129.686124.379123.657126.164129.194132.984135.835142.78143.666143.006142.509146.273148.599145.252141.816138.669141.276138.105137.136122.232123.252124.329124.387124.617119.7112.051108.338108.339106.22298.63797.14897.58893.70990.73688.44686.10183.07583.02683.44286.38382.81978.60175.805
us-gaap:NetCashProvidedByUsedInOperatingActivities ▇▄█▄▃▂▇▃▃▁▆▅▁▃▅▅▂▂▆▅▃▃▄▅▁▄▅▄▂▃▄▄▂▂▂▃▂▁▃▃▃▃▄▄▂▂279.543176.788335.985191.646145.81396.589280.518114.404116.87152.057236.192220.83958.748147.631204.356213.95297.282102.677237.786218.417135.101138.098154.579195.08563.257165.024208.241170.415103.307131.946182.291174.395102.17698.674104.627141.97386.35756.106141.04141.895113.67120.227175.633176.45486.779103.729
us-gaap:NetIncomeLoss ███▆▅▅▇▅▂▁▃▅▄▃▇▅▇▂▇▅▂▂▂▃▃▃▃▄▄▃▄▃▃▃▂▃▂▃▃▃▃▃▄▆▅▄125.806119.809126.67492.15155.42463.88999.14754.07-9.45-22.87928.29556.66232.5919.544100.7754.435115.507-10.006100.26360.0894.713-0.875-9.72128.1749.57828.78113.13547.09749.52120.63340.83825.34929.72713.3827.14622.3170.58111.77424.8527.36714.48825.10350.60478.0259.0544.297
us-gaap:ProfitLoss ███▆▅▅▇▅▂▁▃▅▄▃▇▅█▂▇▅▂▂▂▃▃▃▃▄▄▃▄▃▃▃▂▃▂▃▃▃▃▃▄▆▅▄126.458120.019126.96592.89756.1464.49799.81654.486-9.006-22.66828.89457.29233.18410.195101.94355.63116.459-9.144101.20261.1415.366-0.405-9.31229.02110.20129.69714.12848.1750.40621.18341.55826.00430.32913.7667.67222.5760.87211.58225.56127.32314.44525.76650.76178.3758.94344.073
  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 ▅▅█▅▁▆▅▇▇▄▇▇▅▃▆▅▆▇▆▆▅▄▅▅▇▆▃▄▅▆▅▄▅▇▅▅▆▆▆▆▆▆▅▆▇▇-157.123-164.372-27.368-176.224-330.521-104.592-143.672-57.794-58.956-202.067-64.113-86.952-156.713-229.605-128.807-139.448-97.635-88.942-119.268-113.804-157.216-199.139-161.508-156.695-80.034-116.125-238.177-211.416-149.346-95.539-163.586-218.766-178.807-79.335-158.671-140.987-109.594-110.869-123.605-98.92-96.369-111.64-169.954-131.086-75.881-68.0
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▄▃█▄▂▁▄▁▁▆▁▂▄▇▄▄▅▂▅▃▄▆▅▄▂▃▇▆▄▂▄▅▃▃▄▄▃▃▄▂▃▃▅▃▂▁163.266110.351277.49141.19178.45255.888143.93654.82570.456203.21669.08688.468158.965230.603136.969142.323183.36688.285168.368125.696157.186198.788185.331158.28488.211106.149238.812211.916134.39395.999164.252179.33110.131112.543153.168147.662111.595121.087142.34599.72110.748113.881168.997133.74475.83667.092
  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 ▄▄▃▃▅▅▆▅▁█▄▅▅▄▅▃▅▅▄▄▅▄▅▄▄▅▅▅▄▅▅▅▆▅▄▆▅▅▄▄▅▄▅▄▅▅-48.095-49.444-180.557-235.70427.44755.095157.984-9.553-563.889523.708-41.21739.088-14.569-23.9252.053-212.49644.80940.748-95.501-57.297.438-56.91699.657-50.243-35.115-4.656-5.710.658-56.496-18.4472.2140.079244.94232.91-82.202196.63-6.9922.596-66.18-37.29265.077-20.482-19.223-66.3981.36-5.596
us-gaap:ProceedsFromIssuanceOfLongTermDebt NANA105.0NANANA261.2100.042.0572.375224.0308.22664.00.00.08.89165.08650.01.011.034.00.0NANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:ProceedsFromIssuanceOfLongTermDebt us-gaap:StatementGeographical,us-gaap:DebtInstrument,us-gaap:LongtermDebtType country:JP,amkr:TermLoanFixedRateAt120DueDecember2025,amkr:SubsidiaryTermLoansNANA10900.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:ProceedsFromIssuanceOfLongTermDebt us-gaap:StatementGeographical,us-gaap:DebtInstrument,us-gaap:LongtermDebtType country:KR,amkr:TermLoanDueJune2020,amkr:SubsidiaryTermLoansNANANA0.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:ProceedsFromIssuanceOfLongTermDebt us-gaap:StatementGeographical,us-gaap:DebtInstrument,us-gaap:LongtermDebtType country:KR,amkr:TermLoanDueMay2021,amkr:SubsidiaryTermLoansNANA0.0NA60000.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:ProceedsFromIssuanceOfLongTermDebt us-gaap:StatementGeographical,us-gaap:DebtInstrument,us-gaap:LongtermDebtType country:KR,amkr:TermLoanDueSeptember2022,amkr:SubsidiaryTermLoansNANA0.00.0NANANA60.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:ProceedsFromIssuanceOfLongTermDebt us-gaap:StatementGeographical,us-gaap:DebtInstrument,us-gaap:LongtermDebtType,us-gaap:VariableRate country:CN,amkr:TermLoanLIBORPlus110DueMarch2024,amkr:SubsidiaryTermLoans,us-gaap:LondonInterbankOfferedRateLIBORNA50.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:ProceedsFromIssuanceOfLongTermDebt us-gaap:StatementGeographical,us-gaap:DebtInstrument,us-gaap:VariableRate country:CN,amkr:TermLoanLIBORPlus110DueMarch2024,us-gaap:LondonInterbankOfferedRateLIBORNA50.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RepaymentsOfLongTermDebt us-gaap:StatementGeographical,us-gaap:DebtInstrument,us-gaap:LongtermDebtType country:KR,amkr:TermLoanDueMay2021,amkr:SubsidiaryTermLoansNANA0.0NA60000.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RepaymentsOfLongTermDebt us-gaap:StatementGeographical,us-gaap:DebtInstrument,us-gaap:LongtermDebtType country:KR,amkr:TermLoanDueSeptember2022,amkr:SubsidiaryTermLoansNANA100.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:PaymentsOfDividendsCommonStock ▁█9.76419.457NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  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,us-gaap:LongtermDebtType amkr:SeniorNotesDueSeptember2027,us-gaap:SeniorNotesNANA6.625e-06NA6.625e-086.625e-086.625e-086.625e-086.625e-086.625e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:StatementGeographical,us-gaap:DebtInstrument,us-gaap:LongtermDebtType country:JP,amkr:TermLoanDueJune2022,amkr:SubsidiaryTermLoans▄▄▄8.6e-078.6e-078.6e-07NA8.6e-098.6e-098.6e-098.6e-098.6e-098.6e-098.6e-09NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:StatementGeographical,us-gaap:DebtInstrument,us-gaap:LongtermDebtType country:JP,amkr:TermLoanFixedRateat0.60DueJuly2022,amkr:SubsidiaryTermLoans▄▄▄6e-076e-076e-07NA6e-096e-096e-096e-096e-096e-096e-09NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:StatementGeographical,us-gaap:DebtInstrument,us-gaap:LongtermDebtType country:JP,amkr:TermLoanFixedRateat1.30DueJuly2023,amkr:SubsidiaryTermLoans████▁▁▁▁▁▁▁1.3e-061.3e-061.3e-061.3e-061.2999999999999999e-081.2999999999999999e-081.2999999999999999e-081.2999999999999999e-081.2999999999999999e-081.2999999999999999e-081.2999999999999999e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:StatementGeographical,us-gaap:DebtInstrument,us-gaap:LongtermDebtType country:JP,amkr:TermLoanFixedRateat1.35DueDecember2024,amkr:SubsidiaryTermLoans████▁▁▁1.35e-061.35e-061.35e-061.35e-061.35e-081.35e-081.35e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:StatementGeographical,us-gaap:DebtInstrument,us-gaap:LongtermDebtType country:KR,amkr:FixedRateTermLoanDueMay2021,amkr:SubsidiaryTermLoansNANA1.8000000000000001e-06NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:StatementGeographical,us-gaap:DebtInstrument,us-gaap:LongtermDebtType country:KR,amkr:TermLoanDueMay2021,amkr:SubsidiaryTermLoansNA1.8000000000000001e-06NANA1.8e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:StatementGeographical,us-gaap:DebtInstrument,us-gaap:LongtermDebtType country:KR,amkr:TermLoanFixedRateAt185DueApril2024,amkr:SubsidiaryTermLoans1.85e-06NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:StatementGeographical,us-gaap:DebtInstrument,us-gaap:LongtermDebtType,us-gaap:SubsequentEventType country:KR,amkr:TermLoanDueApril2024,amkr:SubsidiaryTermLoans,us-gaap:SubsequentEventNANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:StatementGeographical,us-gaap:DebtInstrument,us-gaap:LongtermDebtType,us-gaap:VariableRate country:KR,amkr:RevolvingCreditFacilityDueOctober2021,us-gaap:LineOfCredit,amkr:ApplicableBankRateNANA1.1100000000000002e-06NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value290000.0290000.0289000.0288000.0287000.0287000.0287000.0286000.0285000.0285000.0285000.0285000.0285000.0285000.0285000.0285000.0285000.0285000.0284000.0283000.0283000.0283000.0283000.0283000.0283000.0282000.0282000.0282000.0282000.0262000.0262000.0262000.0262000.0198000.0198000.0198000.0198000.0198000.0197000.0197000.0197000.0197000.0183000.0183000.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Shares Issued

us-gaap:CommonStockSharesIssued

us-gaap:CommonStockSharesIssued


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value2902892882882872872862852852850.2853522852852850.285129285284284284283282282282282282282282282281262262261261197197197197197197197197197183183
Percentage of CommonStockSharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStockSharesIssued us-gaap:StatementEquityComponents

us-gaap:CommonStock


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value290289288288287287286285285285285285285285285284282282262197197183183
Percentage of CommonStockSharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100000.0100.0100.0100.0100000.0100.0100.0100.0100.0100.0100.0100.0100.0

Common Stock Shares Authorized

us-gaap:CommonStockSharesAuthorized

us-gaap:CommonStockSharesAuthorized


Common
Period End2021-06-302020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value5005005005005005005005000.55005005000.5500500500500500500500500500500500500500500500500500500500500500500500500500500500500500
Percentage of CommonStockSharesAuthorized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Preferred Stock Shares Authorized

us-gaap:PreferredStockSharesAuthorized

us-gaap:PreferredStockSharesAuthorized


Preferred
Period End2021-06-302020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value10000000.010000000.010000000.010000000.010000000.010000000.010000000.010000000.010000.010000000.010000000.010000000.010000.010000000.010000000.010000000.010000000.010000000.010000000.010000000.010000000.010000000.010000000.010000000.010000000.010000000.010000000.010000000.010000000.010000000.010000000.010000000.010000000.010000000.010000000.010000000.010000000.010000000.010000000.010000000.010000000.010000000.0
Percentage of PreferredStockSharesAuthorized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Common Stock Shares Outstanding

us-gaap:CommonStockSharesOutstanding

us-gaap:CommonStockSharesOutstanding


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value2432432422412412412402392392390.2393852392392390.239184239239238238237237237237236236236236236236216216216216152152152160167168186197197183183
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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
Value245245242241241239239239239239239239239238238237237236237237237236235235235235237166250278280277282282282
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
Value243243241241240239239239239239239239238238237237237236236236236232216216160152154165167195197194183183183
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:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

amkr:StockOptionsAndRestrictedShares


Antidilutive
Period End2021-06-302020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-31
Value0.0870.8584.264.3216.3477.6187.1233.6563.6443.3693.4833.1935.4491.2842.0054.0333.4771.7181.41.1391.1144.2654.9514.0924.2364.8564.7374.4086.1225.3255.531
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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
Value0.520.490.520.380.230.270.410.23-0.04-0.10.120.240.140.040.420.230.48-0.040.420.250.020-0.040.120.040.120.050.20.210.090.20.120.180.090.050.1400.070.140.140.070.130.270.420.320.24
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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
Value0.510.490.520.380.230.260.410.23-0.04-0.10.120.240.140.040.420.230.48-0.040.420.250.020-0.040.120.040.120.050.20.210.090.170.110.140.070.050.1100.060.110.110.070.10.210.30.230.18
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value1261081309654649153-3.589-25.23532502124104531143.815665311920324.22230-2.2543738243327269.2725.832232.2761016301524
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.08.29.57.14.75.67.75.0-0.4-2.83.04.42.02.49.14.711.40.45.56.13.52.20.04.50.64.00.04.65.03.50.03.63.61.30.03.40.31.60.04.12.33.7

Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-312010-09-30
Value1261081309655659154-3.145-25.02432502125106541154.6725767321920334.84530-1.2613838253428279.6566.358242.5671017305482
Percentage of ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.08.29.57.24.75.67.85.0-0.4-2.83.04.42.12.59.24.811.50.55.66.23.52.20.04.60.74.20.04.75.13.60.03.73.71.40.03.50.41.60.04.10.010.4

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
Value1133106010921112980963955901771774898943895867922918817770794872785745568607621607733659616567604626607572609578597550571617557538591605569508
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 RevenueFromContractWithCustomerExcludingAssessedTax80.680.079.782.283.683.681.183.286.286.583.182.584.184.680.279.981.085.777.880.385.785.90.082.884.481.80.081.280.481.50.081.681.583.30.083.287.084.00.083.581.180.90.076.376.178.8

Gains Losses On Extinguishment Of Debt

us-gaap:GainsLossesOnExtinguishmentOfDebt

us-gaap:GainsLossesOnExtinguishmentOfDebt


Gains
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-09-302016-12-312016-09-302015-12-312015-09-302014-12-312014-09-302013-12-312013-09-302013-06-302012-12-312012-09-302012-06-302011-12-312011-09-302011-06-302010-12-312010-09-302010-06-30
Value-2.123-0.4910.0-0.428-0.001-0.179-8.3560.0-0.345-1.149-0.0180.0-4.4240.00.00.00.00.00.0-0.7110.0-11.619-1.1990.00.00.00.0-15.5310.0-0.235-17.807
Percentage of GainsLossesOnExtinguishmentOfDebt100.0100.00.0100.0100.0100.0100.00.0100.0100.0100.00.0100.00.00.00.00.00.00.0100.00.0100.0100.00.00.00.00.0100.00.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.2-0.00.0-0.0-0.0-0.0-0.90.0-0.0-0.1-0.00.0-0.40.00.00.00.00.00.00.00.0-1.60.00.00.00.00.0-2.30.0-0.0-2.4

Gross Profit

us-gaap:GrossProfit

us-gaap:GrossProfit


Gross
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value27226527824119218822218212312018220016915722521617214222721313112210212611513412015315012815014113811411211689104111122129126159188179136
Percentage of GrossProfit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax19.420.020.317.816.416.418.916.813.813.516.917.515.915.419.618.917.115.922.219.714.314.10.017.215.618.20.018.819.618.50.018.418.516.70.016.813.016.00.016.518.919.10.023.723.921.2

Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value142131139108696910063-3.109-1.288577143128974149-8.705119858.7261.468-13.122437.266291359422052341817
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.19.910.28.05.96.08.55.9-0.3-0.15.36.34.11.27.76.514.8-1.011.77.81.00.20.06.01.04.00.07.45.62.90.04.62.52.6

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
Value15111215124.8460.7649.1415.897212814102.481-12.78218320.43918243.361.8730.837164.6315.9991.4214124.9291612-10.2384.0297.9929.538-3.8913.362-2.3512.4993.5943.3821010-1.2-0.167
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 RevenueFromContractWithCustomerExcludingAssessedTax1.10.90.91.21.10.40.10.80.72.42.71.31.00.2-1.11.63.20.01.82.20.40.20.02.30.60.80.01.81.60.70.01.6-1.40.60.01.4-0.60.50.00.30.50.50.01.3-0.2-0.0

Interest Expense

us-gaap:InterestExpense

us-gaap:InterestExpense


Interest
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
Value1212161617161819181921202020222121212016171722233423222324262322231922181817191819192422
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.91.01.21.41.51.62.12.21.71.72.02.01.71.82.22.42.12.02.31.90.02.43.13.20.02.92.93.40.03.43.23.20.02.83.32.80.02.42.92.80.02.53.33.5

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
Value1251191269255639954-9.45-22.8792856329.54410054115-10.006100604.713-0.875-9.721289.5782813474920402529137.146220.581112427142550785944
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 RevenueFromContractWithCustomerExcludingAssessedTax8.99.09.26.84.75.58.45.0-1.1-2.62.65.03.10.98.84.711.5-1.19.85.50.5-0.10.03.81.33.90.05.86.53.00.03.34.01.90.03.20.11.80.03.72.13.80.09.87.96.9

Net Income Loss Attributable To Noncontrolling Interest

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value652000.0210000.0291000.0746000.0716000.0608000.0669000.0416000.0444000.0211000.0599000.0630000.0593000.0651000.01173000.01195000.0952000.0862000.0939000.01052000.0653000.0470000.0409000.0847000.0623000.0916000.0993000.01073000.0885000.0550000.0720000.0655000.0602000.0384000.0526000.0259000.0291000.0-192000.0711000.0-44000.0-43000.0663000.0157000.0350000.0-107000.0-224000.0
Percentage of NetIncomeLossAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.10.10.10.10.00.00.00.10.10.10.10.10.10.10.10.10.10.10.10.00.10.10.10.00.10.10.10.00.10.10.10.00.00.0-0.00.0-0.0-0.00.10.00.0-0.0-0.0

Net Income Loss Available To Common Stockholders Basic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value12511992556354-9.45-22.87956329.54454115-10.006100604.713-0.875-9.684289.5572813464920402529137.015220.5791124271424507758
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.99.06.84.75.55.0-1.1-2.65.03.10.94.711.5-1.19.85.50.5-0.10.03.81.33.90.05.86.42.90.03.34.01.90.03.20.11.80.03.72.13.80.09.87.9

Nonoperating Income Expense

us-gaap:NonoperatingIncomeExpense

us-gaap:NonoperatingIncomeExpense


Nonoperating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-12668000.0-12762000.0-19535000.0-18819000.0-17479000.0-14730000.0-17805000.0-15228000.0-25619000.0-14708000.0-17675000.0-21085000.0-10126000.0-23443000.0-20967000.0-23855000.0-19261000.0-33360000.0-6953000.0-29388000.0-21816000.0-20626000.0-34044000.0-7362000.0-31377000.0-24521000.0-26905000.0-15397000.0-18080000.0-25000000.0-26627000.0-19840000.0-38362000.0-23293000.0-26745000.0-21904000.0-24983000.0-19357000.0-20492000.0-14173000.0-37935000.0-20851000.0-25390000.0-29163000.0-43005000.0-25081000.0
Percentage of NonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.9-1.0-1.4-1.4-1.5-1.3-1.5-1.4-2.9-1.6-1.6-1.8-1.0-2.3-1.8-2.1-1.9-3.7-0.7-2.7-2.4-2.40.0-1.0-4.3-3.30.0-1.9-2.4-3.60.0-2.6-5.1-3.40.0-3.2-3.6-3.00.0-1.9-5.5-3.10.0-3.7-5.7-3.9

Operating Expenses

us-gaap:OperatingExpenses

us-gaap:OperatingExpenses


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
Value1171211191131051041041031001071061081151211151183.94211810099101100817576808078898375827973706267706878737673707867
Percentage of OperatingExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.49.18.78.49.09.18.99.511.312.09.99.410.911.910.010.30.413.19.89.111.011.60.010.310.410.90.09.611.712.00.010.810.710.70.09.09.810.80.010.610.711.50.08.910.510.5

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
Value1551441591278684118782213759253361109816824126114302220513853397560457458584142542134434355498611710068
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 RevenueFromContractWithCustomerExcludingAssessedTax11.010.911.69.47.47.310.07.32.51.57.08.15.13.59.68.616.72.712.410.63.32.50.07.05.27.30.09.27.96.50.07.67.86.00.07.83.25.20.05.98.17.50.014.813.410.7

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

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value0.278-11.443.5654.191-0.6990.475-0.9630.0515.918-2.2247.601-6.611-11.14415-0.692-0.969-0.83313-46.3785.8832619-0.0440.010.01-0.122-0.058-0.098-12.4930.6853.917-1.661-2.899-4.252-2.7921.2141.659-2.769
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-0.90.30.3-0.10.0-0.10.00.7-0.20.7-0.6-1.01.5-0.1-0.1-0.11.5-4.50.52.92.30.00.00.0-0.00.0-0.0-1.60.10.0-0.2-0.4-0.60.00.20.2-0.4

Other Comprehensive Income Loss Net Of Tax

us-gaap:OtherComprehensiveIncomeLossNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value0.29-11.4473.9614.037-0.4370.594-8.128-0.0745.861-2.3564.083-6.656-11.186154.21-0.954-0.81513-43.8865.9072619304.619-5.3561.238-15.389-9.727-11.4453.949-7.0952.533-2.824-4.11-1.3141.4331.695-1.422
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-0.90.30.3-0.00.1-0.7-0.00.7-0.30.4-0.6-1.01.50.4-0.1-0.11.5-4.30.52.92.30.00.6-0.70.20.0-1.2-1.50.60.00.3-0.4-0.60.00.20.2-0.2

us-gaap:OtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustmentIncludingPortionAttributableToNoncontrollingInterest


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value0.0260.0250.5680.0110.0120.011-7.165-0.125-0.057-0.132-3.518-0.045-0.042-0.0394.9020.0150.0180.232.4920.0240.0230.024
Percentage of OtherComprehensiveIncomeLossNetOfTax9.0-0.214.30.3-2.71.988.2168.9-1.05.6-86.20.70.4-0.3116.4-1.6-2.21.7-5.70.40.10.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.00.0-0.6-0.0-0.0-0.0-0.3-0.0-0.0-0.00.40.00.00.00.20.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:AccumulatedDefinedBenefitPlansAdjustmentIncludingPortionAttributableToNoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterest


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value0.278-11.444.191-0.6990.4750.0515.918-2.2247.601-6.611-11.14415-0.692-0.969-0.83313-46.3785.8832619
Percentage of OtherComprehensiveIncomeLossNetOfTax95.999.9103.8160.080.0-68.9101.094.4186.299.399.6100.3-16.4101.6102.298.3105.799.699.997.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-0.90.3-0.10.00.00.7-0.20.7-0.6-1.01.5-0.1-0.1-0.11.5-4.50.52.92.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value-0.014-0.032-0.172-0.1650.250.108
Percentage of OtherComprehensiveIncomeLossNetOfTax-4.80.3-4.3-4.1-57.218.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.0-0.0-0.0-0.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.29-11.4473.9614.037-0.4370.594-8.128-0.0745.861-2.3564.083-6.656-11.18615
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-0.90.30.3-0.00.1-0.7-0.00.7-0.30.4-0.6-1.01.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Parent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value0.29-11.4473.9614.037-0.4370.594-8.128-0.0745.861-2.3564.083-6.656-11.186154.21-0.954-0.81513-43.8865.9072619304.619-5.3561.238-15.389-9.727-11.4453.949-7.0952.533-2.824-4.11-1.3141.4331.695-1.422
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.098.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-0.90.30.3-0.00.1-0.7-0.00.7-0.30.4-0.6-1.01.50.4-0.1-0.11.5-4.30.52.92.30.00.6-0.70.20.0-1.2-1.50.60.00.3-0.4-0.60.00.20.2-0.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Parent0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Other Nonoperating Income Expense

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:OtherNonoperatingIncomeExpense


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.096-0.089-4.828-2.415-1.4672.315-1.1321.76-6.9664.5650.363-1.31511-3.432-0.861-3.3543.19-10.86415-6.6570.242-3.192-15.71211-7.290.4989.2549.6265.699-0.036-2.5580.0070.1080.2290.0750.3590.5180.6340.3350.2260.3250.1440.1440.0850.1490.241
Percentage of OtherNonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-0.0-0.4-0.2-0.10.2-0.10.2-0.80.50.0-0.11.0-0.3-0.1-0.30.3-1.21.5-0.60.0-0.40.01.6-1.00.10.01.20.7-0.00.00.00.00.00.00.10.10.10.00.00.00.00.00.00.00.0

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1261201269256649954-9.006-22.6682857331010155116-9.144101615.366-0.405-9.31229102914485021412630137.672220.872112527142550785844
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.09.19.36.94.85.68.55.0-1.0-2.52.75.03.11.08.94.811.5-1.09.95.60.6-0.00.04.01.44.00.05.96.63.00.03.44.12.00.03.20.11.80.03.72.13.90.09.97.96.8

us-gaap:ProfitLoss us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value0.6520.210.2910.7460.7160.6080.6690.4160.4440.2110.5990.630.5930.6511.1461.1950.9520.8621.0520.6530.470.8470.6230.9161.0730.8850.550.720.6550.6020.3840.5260.2590.291-0.1920.711-0.044-0.0430.6630.1570.35
Percentage of ProfitLoss0.50.20.20.81.30.90.70.8-4.9-0.92.11.11.86.41.12.10.8-9.41.712.2-116.02.96.13.12.21.82.61.72.52.02.86.91.133.4-1.72.8-0.2-0.32.60.30.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.10.10.10.10.00.00.00.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.00.10.10.10.00.00.0-0.00.0-0.0-0.00.10.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Parent


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value1251191269255639954-9.45-22.8792856329.54410354115-10.006604.713-0.875289.57828474920402529137.146220.58111242714255078
Percentage of ProfitLoss99.599.899.899.298.799.199.399.2104.9100.997.998.998.293.6101.697.999.2109.498.387.8216.097.193.996.997.898.297.498.397.598.097.293.198.966.6101.797.2100.2100.397.499.799.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.99.09.26.84.75.58.45.0-1.1-2.62.65.03.10.99.04.711.5-1.15.50.5-0.13.81.33.95.86.53.00.03.34.01.90.03.20.11.80.03.72.13.80.09.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Parent0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value1251191269255639954-9.45-22.879285632
Percentage of ProfitLoss99.599.899.899.298.799.199.399.2104.9100.997.998.998.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.99.09.26.84.75.58.45.0-1.1-2.62.65.03.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.0

Research And Development Expense

us-gaap:ResearchAndDevelopmentExpense

us-gaap:ResearchAndDevelopmentExpense


Research
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value43444135313232323635373741403742444133263027222120181716222117181414131313131213121211121211
Percentage of ResearchAndDevelopmentExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.13.33.02.62.72.82.83.04.04.03.53.33.94.03.33.74.44.63.22.53.33.10.02.92.72.40.02.02.93.00.02.41.92.10.01.92.02.00.01.81.81.80.01.61.61.8

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
Value14061326137113541172115211781083895894108111441065102511501148100889910211086917868670734736742853812767696754767746687722695686655683740687664750793749645
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

amkr:AdvancedProducts


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
Value979920868899729705666588432422564582496475582563445375
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax69.769.463.366.462.261.256.654.348.347.252.250.946.646.450.649.044.141.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax69.769.463.366.462.261.256.654.348.347.252.250.946.646.450.649.044.141.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax amkr:AdvancedProducts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

amkr:MainstreamProducts


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
Value426405502454443447511494462472516562569549567585563523
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax30.330.636.733.637.838.843.445.751.752.847.849.153.453.649.451.055.958.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax30.330.636.733.637.838.843.445.751.752.847.849.153.453.649.451.055.958.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax amkr:MainstreamProducts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Revenues

us-gaap:Revenues

us-gaap:Revenues


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value14061326137113541172115211781083895894108111441065102511501148100889910211086917868670734736742853812767696754767746687722695686655683740687664750793749645
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of 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

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
Value74767877747275706471697074807775677667727073585456626261676258646559564953575565616462576656
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 RevenueFromContractWithCustomerExcludingAssessedTax5.35.85.75.76.36.36.46.57.28.06.46.27.07.96.76.66.78.56.66.77.78.58.87.47.78.57.47.68.89.07.78.48.88.77.97.17.88.78.18.88.99.78.37.38.98.7

Assets

us-gaap:Assets

us-gaap:Assets


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value55675053502251365115481146954405430948474495449543814391452144124384417840924241412039594031364736443633363537593609350334273476341630743025314328452804277328892817270127362432
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Assets us-gaap:ConsolidatedEntities

us-gaap:VariableInterestEntityPrimaryBeneficiary


Assetsus-gaap:
Period End2020-12-31
Value17
Percentage of Assets0.3
Percentage of Assets0.3
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary100.0

Liabilities

us-gaap:Liabilities

us-gaap:Liabilities


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value29842591266829132998275327052518247830142639267326112644283028292857276926882901285027132806244424752470250426282518251124622547251623972358248321672096207121252036193721002043
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets53.651.353.156.758.657.257.657.257.562.258.759.559.660.262.664.165.266.365.768.469.268.569.667.067.968.068.969.969.871.771.873.373.778.078.079.076.274.874.773.672.371.776.784.0

us-gaap:Liabilities us-gaap:ConsolidatedEntities

us-gaap:VariableInterestEntityPrimaryBeneficiary


Liabilitiesus-gaap:
Period End2020-12-31
Value0.1
Percentage of Liabilities0.0
Percentage of Assets0.0
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary0.6

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value55675053502251365115481146954405430948474495449543814391452144124384417840924241412039594031364736443633363537593609350334273476341630743025314328452804277328892817270127362432
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value25542433232521942089203119631861180518071830179617451723166715601505138813831321125112271207118611521147111611171078979953918890667657651669699693756774757630383
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets45.948.246.342.740.842.241.842.341.937.340.740.039.839.236.935.434.333.233.831.130.431.030.032.531.631.630.729.729.928.027.826.426.121.721.720.723.524.925.026.227.528.023.015.8

Assets Current

us-gaap:AssetsCurrent

us-gaap:AssetsCurrent


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value2371211421322268234121532001166315132002167116111458149116501566159614941409148713621219131711041152120511971270124712801232128813371132109111829729929961136111010101062932
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets42.641.842.544.245.844.842.637.735.141.337.235.833.334.036.535.536.435.834.435.133.130.832.730.331.633.233.033.834.636.636.037.139.136.836.137.634.235.435.939.339.437.438.838.3

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
Value7246506985667839418945985511055681547380495596519657613549549499413523430442494449485525628610591636466413549351381434483475392404417437425395424410
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 Assets13.012.913.911.015.319.619.113.612.821.815.212.28.711.313.211.815.014.713.413.012.110.413.011.812.113.612.412.914.617.917.817.018.615.213.717.512.313.615.716.716.914.514.80.00.00.016.30.00.0

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312014-12-31
Value7296547025707879458986045561060688554385500602525663620555527454
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets13.113.014.011.115.419.619.113.712.921.915.312.38.811.413.311.915.114.813.613.112.5

Short Term Investments

us-gaap:ShortTermInvestments

us-gaap:ShortTermInvestments


Short
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value160163133356310586.348
Percentage of ShortTermInvestments100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.93.22.76.96.11.20.1

Accounts Receivable Net Current

us-gaap:AccountsReceivableNetCurrent

us-gaap:AccountsReceivableNetCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value1064950962990898880850803702684724797795734692691604545563630579537526410438433469483455406382429411379389359352345298351348349392328
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets19.118.819.219.317.618.318.118.216.314.116.117.718.216.715.315.713.813.113.814.914.113.613.111.212.011.912.912.912.611.611.112.412.112.312.911.412.412.310.812.212.412.914.313.5

Inventory Net

us-gaap:InventoryNet

us-gaap:InventoryNet


Inventory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value374307297299306238220216217227230228243228326314295267267272251237238208219227223229205197200222231235227218205205198224217185191155
Percentage of InventoryNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.76.15.95.86.05.04.74.95.14.75.15.15.55.27.27.16.76.46.56.46.16.05.95.76.06.36.16.15.75.65.86.46.87.77.56.97.27.37.27.87.76.97.06.4

Other Assets Current

us-gaap:OtherAssetsCurrent

us-gaap:OtherAssetsCurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value4541405441343441383232353730333936652731292927534848526957453338504545384137353532433732
Percentage of OtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.80.80.81.10.80.70.71.00.90.70.70.80.80.70.70.90.81.60.70.70.70.70.71.51.31.31.41.81.61.31.01.11.51.51.51.21.51.31.31.21.21.61.41.3

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType

us-gaap:PropertyPlantAndEquipmentGross

amkr:SoftwareAndComputerEquipment


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value230229231228224222220219218216213209206203200198197208205207204202197186188186185206206194193194191188191191190187186183179176
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.14.54.64.54.44.64.75.05.14.54.74.74.74.64.44.54.55.05.04.95.05.14.95.15.25.15.15.55.75.65.65.65.66.16.36.16.76.76.76.46.46.4
Percentage of Assets amkr:SoftwareAndComputerEquipment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:BuildingAndBuildingImprovements


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value16391636162516191585157515711571156915491523151014961443138413791375133913621069103310231010946945944940937919914911897887876904901896890871869867838
Percentage of PropertyPlantAndEquipmentGross711.8712.6703.1707.8707.2708.2713.5716.0719.2714.3713.6722.4725.8707.7690.7694.2697.1641.9661.3514.2505.1504.4512.1508.4501.3505.3507.9453.6445.8469.3470.6461.4463.0465.4473.5471.4471.1475.2467.9473.4482.1475.3
Percentage of Assets29.432.432.431.531.032.733.535.736.432.033.933.634.232.930.631.331.432.133.325.225.125.925.126.025.926.025.924.925.526.126.625.826.028.529.928.731.531.831.430.130.830.6
Percentage of Assets us-gaap:BuildingAndBuildingImprovements0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ConstructionInProgress


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value12584482852241211163244415795104908589874044344073522361386439294834273432342428451826161750
Percentage of PropertyPlantAndEquipmentGross54.436.821.012.423.511.15.75.27.715.120.820.027.846.952.345.843.143.042.3194.5212.5201.1178.7127.073.634.421.214.123.517.514.017.917.018.412.914.723.99.814.49.19.828.7
Percentage of Assets2.21.71.00.61.00.50.30.30.40.71.00.91.32.22.32.11.92.12.19.510.610.38.76.53.81.81.10.81.31.00.81.01.01.10.80.91.60.71.00.60.61.8
Percentage of Assets us-gaap:ConstructionInProgress0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:FurnitureAndFixtures


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value202020202019191918171716161615151522212121212117161615151517171717171919191919202020
Percentage of PropertyPlantAndEquipmentGross9.08.99.09.09.08.99.09.08.67.98.18.18.17.97.87.97.810.610.310.510.610.410.89.18.98.78.37.57.58.99.09.09.09.210.010.210.210.410.611.211.411.7
Percentage of Assets0.40.40.40.40.40.40.40.40.40.40.40.40.40.40.30.40.40.50.50.50.50.50.50.50.50.40.40.40.40.50.50.50.50.60.60.60.70.70.70.70.70.8
Percentage of Assets us-gaap:FurnitureAndFixtures0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Land


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value219219221220219220219219219222222224225226224224225215240245245241237207207207207207207208208103103103106106106106106106106106
Percentage of PropertyPlantAndEquipmentGross95.195.595.796.498.198.999.8100.2100.8102.7104.4107.4109.3111.3112.2113.2114.1103.3116.9118.2119.8119.2120.6111.7110.3111.3112.3100.6100.8106.7107.453.554.355.255.655.655.956.757.157.959.160.3
Percentage of Assets3.94.34.44.34.34.64.75.05.14.65.05.05.15.25.05.15.15.25.95.85.96.15.95.75.75.75.75.55.85.96.13.03.03.43.53.43.73.83.83.73.83.9
Percentage of Assets us-gaap:Land0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:MachineryAndEquipment


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value610958455736566555025335530352985266521751965206513150254938487547324580448344284340428142264072405539773953394737483668357735903499338733323310316730863016296428752749
Percentage of PropertyPlantAndEquipmentGross2652.82546.02481.62476.22453.52398.42407.92414.52412.72405.72434.82490.32488.42463.92463.02453.62399.32195.22176.82129.52120.82110.02142.52187.12150.52128.32134.41909.21817.41881.71847.31845.51825.81799.11743.71730.21665.21645.91618.41614.61598.21558.9
Percentage of Assets109.7115.7114.2110.3107.6110.9113.0120.3122.2107.6115.6115.8117.1114.4109.2110.5108.0109.6109.6104.4105.3108.1104.8111.7111.3109.4108.8105.0103.9104.7104.4103.3102.4110.2110.2105.3111.3110.1108.8102.6102.0100.5
Percentage of Assets us-gaap:MachineryAndEquipment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:PropertyPlantAndEquipmentNet


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value28732623256625602471236724042466251525642650271427542727269527062645255125642619262526162579228422292167220622582153203320061947188518251819183217511691165616141573155815371364
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets51.651.951.149.848.349.251.256.058.452.959.060.462.962.159.661.360.361.162.761.863.766.164.062.661.259.760.760.159.758.058.556.055.259.460.258.361.660.359.755.955.857.756.256.1

Goodwill

us-gaap:Goodwill

us-gaap:Goodwill


Goodwill
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value25252726262625262625252425262525252524272720190.0
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets0.50.50.50.50.50.50.60.60.60.50.60.60.60.60.60.60.60.60.60.70.70.50.50.0

Deferred Tax Assets Liabilities Net

us-gaap:DeferredTaxAssetsLiabilitiesNet

us-gaap:DeferredTaxAssetsLiabilitiesNet


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
Value889011811565657457414242
Percentage of DeferredTaxAssetsLiabilitiesNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.81.92.62.51.61.62.01.71.41.51.6

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1441411471491461471481411321220.0
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets2.62.82.92.92.93.13.23.23.12.50.0

Other Assets Noncurrent

us-gaap:OtherAssetsNoncurrent

us-gaap:OtherAssetsNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value14914514512812611211110611812814414113914214610911210289102103100113109120119111100707277129837468787374708988889399
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.72.92.92.52.52.32.42.42.82.73.23.13.23.23.22.52.62.52.22.42.52.52.83.03.33.33.12.72.02.12.33.72.42.42.32.52.62.62.63.13.13.33.44.1

Accounts Payable Current

us-gaap:AccountsPayableCurrent

us-gaap:AccountsPayableCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value710602636611583562571477459459530548553527569562477453487517465407434279280287309626555416365432499432439500448424424470420406443361
Percentage of AccountsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets12.811.912.711.911.411.712.210.810.79.511.812.212.612.012.612.710.910.911.912.211.310.310.87.77.77.98.516.715.411.910.712.414.614.114.515.915.815.115.316.314.915.016.214.8

Accrued Income Taxes Current

us-gaap:AccruedIncomeTaxesCurrent

us-gaap:AccruedIncomeTaxesCurrent


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value383926203118111419273835235256443925373121242129203831271714178.54910118.3414.9352.8037.4834.4465.5912.49710
Percentage of AccruedIncomeTaxesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.70.80.50.40.60.40.20.30.50.60.90.80.51.21.31.00.90.60.90.70.50.60.50.80.61.00.90.70.50.40.50.20.30.40.30.20.10.30.20.20.10.4

Accrued Liabilities Current

us-gaap:AccruedLiabilitiesCurrent

us-gaap:AccruedLiabilitiesCurrent


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value374304349298291236267253246245258271254311374385348338338346300306264251226272258292252258264290217232212197190173158204160165178155
Percentage of AccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.76.07.05.85.74.95.75.85.75.15.76.05.87.18.38.78.08.18.38.27.37.76.66.96.27.57.17.87.07.47.78.46.47.67.06.36.76.25.77.15.76.16.56.4

Contract With Customer Liability Current

us-gaap:ContractWithCustomerLiabilityCurrent

us-gaap:ContractWithCustomerLiabilityCurrent


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value5634302714131616
Percentage of ContractWithCustomerLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.00.70.60.50.30.30.30.4

Debt Current

us-gaap:DebtCurrent

us-gaap:DebtCurrent


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value134135149136148141144102198638114971151051231173133635309626760.00.0305.010.010.0666156560.00.0406953591009913215088
Percentage of DebtCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.42.73.02.72.92.93.12.34.613.22.52.22.62.42.72.77.10.90.90.72.30.71.90.00.00.80.10.30.31.91.81.61.60.00.01.32.41.92.13.53.54.95.53.7

Dividends Payable Current

us-gaap:DividendsPayableCurrent

us-gaap:DividendsPayableCurrent


Dividends
Period End2020-12-31
Value9713000.0
Percentage of DividendsPayableCurrent100.0
Percentage of Assets0.2

Liabilities Current

us-gaap:LiabilitiesCurrent

us-gaap:LiabilitiesCurrent


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value167913161315137512821047105999210381467115811711161116813611355138810391005107410369401018752717701700929817741690779773664652738708650642775680704772605
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets30.226.126.226.825.121.822.622.524.130.325.826.126.526.630.130.731.724.924.625.325.223.725.320.619.719.319.324.722.721.220.222.422.621.621.623.524.923.223.226.824.126.128.224.9

Long Term Debt Current

us-gaap:LongTermDebtCurrent

us-gaap:LongTermDebtCurrent


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value134135149136148141144102198114
Percentage of LongTermDebtCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.42.73.02.72.92.93.12.34.62.5

Operating Lease Liability Current

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OperatingLeaseLiabilityCurrent


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value525049474342403933290.0
Percentage of OperatingLeaseLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets0.91.01.00.90.80.90.90.90.80.60.0

Other Accrued Liabilities Current

us-gaap:OtherAccruedLiabilitiesCurrent

us-gaap:OtherAccruedLiabilitiesCurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value605364555747485955525453545655495058554239393835343031323531313234273331343339524045
Percentage of OtherAccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.11.11.31.11.11.01.01.41.31.11.21.21.21.31.21.11.21.41.31.01.01.00.91.00.90.90.90.91.00.90.90.91.00.91.11.01.21.21.41.81.51.7

Long Term Debt

us-gaap:LongTermDebt

us-gaap:LongTermDebt


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value1059109611641328155415221460130513151334
Percentage of LongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets19.021.723.225.930.431.631.129.630.529.7

Long Term Debt Noncurrent

us-gaap:LongTermDebtNoncurrent

us-gaap:LongTermDebtNoncurrent


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value916952100511821396137113051195110912151217126712141240124012431220145013641473146514331444136514151420145014501451151115161519151913531320136110851076106210009999609641095
Percentage of LongTermDebtNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets16.518.820.023.027.328.527.827.125.825.127.128.227.728.227.428.227.834.733.334.735.636.235.837.438.839.139.938.640.243.144.243.744.544.043.643.338.238.438.334.635.535.635.245.0

Deferred Income Tax Liabilities Net

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:DeferredIncomeTaxLiabilitiesNet


Deferred
Period End2020-12-312019-12-312018-12-31
Value6508000.0130000.0238000.0
Percentage of DeferredIncomeTaxLiabilitiesNet100.0100.0100.0
Percentage of Assets0.10.00.0

Minority Interest

us-gaap:MinorityInterest

us-gaap:MinorityInterest


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value28282828272726252525252424232322212019191817171616151413121111109.8259.2238.8398.3138.0547.7637.9557.2447.2887.3316.6686.492
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.50.60.60.50.50.60.60.60.60.50.60.60.60.50.50.50.50.50.50.40.40.40.40.50.40.40.40.40.40.30.30.30.30.30.30.30.30.30.30.30.30.30.20.3

Other Liabilities Noncurrent

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OtherLiabilitiesNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value16398102916665716774767954514546506067768692881011011091201251414161412101921171819136.4541312109.063
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.91.92.11.81.31.41.51.51.71.61.81.21.21.01.01.21.41.61.92.02.32.22.52.83.03.33.40.40.40.50.40.40.30.60.70.60.60.70.50.20.50.50.40.4

Operating Lease Liability Noncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value787784888789918580730.0
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets1.41.51.71.71.71.91.91.91.91.50.0

Lessee Operating Lease Liability Payments Due Year Two

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo


Lessee
Period End2020-12-312019-03-312018-12-31
Value362724
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo100.0100.0100.0
Percentage of Assets0.70.60.5

Lessee Operating Lease Liability Payments Due Year Three

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree


Lessee
Period End2020-12-312019-03-312018-12-31
Value191917
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree100.0100.0100.0
Percentage of Assets0.40.40.4

Lessee Operating Lease Liability Payments Due Year Four

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour


Lessee
Period End2020-12-312019-03-312018-12-31
Value101110
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour100.0100.0100.0
Percentage of Assets0.20.20.2

Lessee Operating Lease Liability Payments Due Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive


Lessee
Period End2020-12-312019-03-312018-12-31
Value7925000.09147000.09008000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive100.0100.0100.0
Percentage of Assets0.20.20.2

Lessee Operating Lease Liability Payments Due After Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive


Lessee
Period End2020-12-312019-03-312018-12-31
Value172626
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive100.0100.0100.0
Percentage of Assets0.30.50.6

Operating Lease Liability

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiability


Operating
Period End2020-12-31
Value134
Percentage of OperatingLeaseLiability100.0
Percentage of Assets2.7

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue


Lessee
Period End2020-12-312019-03-312018-12-31
Value147117120
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue100.0100.0100.0
Percentage of Assets2.92.42.7

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount


Lessee
Period End2020-12-31
Value13
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount100.0
Percentage of Assets0.3

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value25542433232521942089203119631861180518071830179617451723166715601505138813831321125112271207118611521147111611171078979953918890667657651669699693756774757630383
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets45.948.246.342.740.842.241.842.341.937.340.740.039.839.236.935.434.333.233.831.130.431.030.032.531.631.630.729.729.928.027.826.426.121.721.720.723.524.925.026.227.528.023.015.8

Stockholders Equity Including Portion Attributable To Noncontrolling Interest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-312008-12-312007-12-31
Value25832462235322222116205819901887183118321855182117701747169015821526140814031340127012451225120311691163113011311091991964929899676666659677707701763781764636581497389243661
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets46.448.746.943.341.442.842.442.842.537.841.340.540.439.837.435.934.833.734.331.630.831.530.433.032.132.031.130.130.228.328.226.726.322.022.021.023.825.225.326.427.728.323.30.00.016.00.00.0

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value-4.218-4.822.6596.3031.138-1.425-2.525
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-0.2-0.20.10.40.1-0.1-0.2
Percentage of Assets-0.1-0.10.10.10.0-0.0-0.1
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.0

us-gaap:AccumulatedDefinedBenefitPlansAdjustmentIncludingPortionAttributableToNoncontrollingInterest


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value-4.167-4.193-4.218-4.786-4.797-4.809-4.822.3452.472.5272.6596.1776.2226.2646.3031.4011.3861.3681.138-1.354-1.378-1.401-1.425
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-0.2-0.2-0.2-0.2-0.2-0.2-0.20.10.10.10.10.30.40.40.40.10.10.10.1-0.1-0.1-0.1-0.1
Percentage of Assets-0.1-0.1-0.1-0.1-0.1-0.1-0.10.10.10.10.10.10.10.10.10.00.00.00.0-0.0-0.0-0.0-0.0
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustmentIncludingPortionAttributableToNoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetGainLossIncludingPortionAttributableToNoncontrollingInterest


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value-4.82-5.4222.0575.70.556-1.985
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-0.2-0.30.10.30.0-0.2
Percentage of Assets-0.1-0.10.00.10.0-0.0
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetGainLossIncludingPortionAttributableToNoncontrollingInterest0.00.00.00.00.00.0

us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceIncludingPortionAttributableToNoncontrollingInterest


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value0.6020.6020.6020.6030.5820.56
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.00.00.00.00.00.0
Percentage of Assets0.00.00.00.00.00.0
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceIncludingPortionAttributableToNoncontrollingInterest0.00.00.00.00.00.0

us-gaap:AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterest


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value2020312723242324241821132031161617185.124514518-0.659
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.80.81.31.31.11.21.21.31.41.01.10.71.11.81.01.11.21.30.43.83.61.5-0.1
Percentage of Assets0.40.40.60.50.50.50.50.60.60.40.50.30.50.70.40.40.40.40.11.21.10.5-0.0
Percentage of Assets us-gaap:AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value-0.025-0.0110.0210.1930.3580.1080.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-0.0-0.00.00.00.00.00.0
Percentage of Assets-0.0-0.00.00.00.00.00.0
Percentage of Assets us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value1615272319191927272123192637226.262-2.084-32.867-0.2551110155.02118-6.223
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.60.61.21.00.91.01.01.41.51.21.31.11.52.21.30.4-0.2-2.9-0.01.71.52.41.37.5-0.9
Percentage of Assets0.30.30.50.50.40.40.40.60.60.40.50.40.60.90.50.2-0.1-0.9-0.00.40.40.60.20.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedTranslationAdjustment


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value312321165.124-0.659-0.513
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest1.31.21.11.00.4-0.1-0.0
Percentage of Assets0.60.50.50.40.1-0.0-0.0
Percentage of Assets us-gaap:AccumulatedTranslationAdjustment0.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value1968196419531943193419311927191519131911190919081906190519031895188318781812161416111504150014961482
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest76.279.883.087.491.493.896.9101.5104.5104.3102.9104.7107.7109.1112.6135.0153.7166.1187.8242.1229.8236.4385.0615.6224.0
Percentage of Assets35.438.938.937.837.840.141.143.544.439.442.542.443.543.442.146.346.751.752.953.458.155.061.70.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value0.290.290.2890.2880.2870.2870.2870.2860.2850.2850.2850.2850.2850.2850.2850.2840.2830.2820.2620.1980.1970.1830.1830.1830.182
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NoncontrollingInterest


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-312008-12-312007-12-31
Value28282828272726252525252424232322212019191817171616151413121111109.8259.2238.8398.3138.0547.7637.9557.2447.2887.3316.6686.5116.1616.4926.0247.022
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest1.11.21.21.31.31.31.31.41.41.41.41.41.41.41.41.41.41.51.41.41.41.41.41.41.41.31.31.21.21.21.21.11.11.41.31.31.21.11.10.90.91.01.01.11.21.72.51.1
Percentage of Assets0.50.60.60.50.50.60.60.60.60.50.60.60.60.50.50.50.50.50.50.40.40.40.40.50.40.40.40.40.40.30.30.30.30.30.30.30.30.30.30.30.30.30.20.00.00.30.00.0
Percentage of Assets us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Parent


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-312008-12-312007-12-31
Value25542433232521942089203119631861180518071830179617451723166715601505138813831321125112271207118611521147111611171078979953918890667657651669699693756774757630574490383237654
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest98.998.898.898.798.798.798.798.698.698.698.698.698.698.698.698.698.698.598.698.698.698.698.698.698.698.798.798.898.898.898.898.998.998.698.798.798.898.998.999.199.199.099.098.998.898.397.598.9
Percentage of Assets45.948.246.342.740.842.241.842.341.937.340.740.039.839.236.935.434.333.233.831.130.431.030.032.531.631.630.729.729.928.027.826.426.121.721.720.723.524.925.026.227.528.023.00.00.015.80.00.0
Percentage of Assets us-gaap:Parent0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value78867256244535329723413480901138428-4.359-42.851-303.557-460.15-516.962-647.348-756.644-798.462-890.27-1122.241-1278.221-821.526
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest30.527.323.920.016.714.511.87.14.44.96.14.71.6-0.2-2.5-21.6-37.6-45.7-67.1-113.5-113.9-139.8-288.0-525.7-124.2
Percentage of Assets14.213.311.28.76.96.25.03.11.91.92.51.90.6-0.1-0.9-7.4-11.4-14.2-18.9-25.0-28.8-32.5-46.10.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value-219.061-219.061-217.74-217.66-217.592-217.533-217.479-216.301-216.254-216.219-216.171-216.135-216.087-216.038-215.982-214.49-213.758-213.028-211.449-210.983-130.56-0.2840.00.00.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-8.5-8.9-9.2-9.8-10.3-10.6-10.9-11.5-11.8-11.8-11.6-11.9-12.2-12.4-12.8-15.3-17.4-18.8-21.9-31.6-18.6-0.00.00.00.0
Percentage of Assets-3.9-4.3-4.3-4.2-4.3-4.5-4.6-4.9-5.0-4.5-4.8-4.8-4.9-4.9-4.8-5.2-5.3-5.9-6.2-7.0-4.7-0.00.00.00.0
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value290000.0290000.0289000.0288000.0287000.0287000.0287000.0286000.0285000.0285000.0285000.0285000.0285000.0285000.0285000.0285000.0285000.0285000.0284000.0283000.0283000.0283000.0283000.0283000.0283000.0282000.0282000.0282000.0282000.0262000.0262000.0262000.0262000.0198000.0198000.0198000.0198000.0198000.0197000.0197000.0197000.0197000.0183000.0183000.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Additional Paid In Capital

us-gaap:AdditionalPaidInCapital

us-gaap:AdditionalPaidInCapital


Additional
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value19681964195319431934193119271915191319111909190819061905190319011899189618951888188518841883188218811880187818771875181318121811181016141614161316121612161116101609160715041500
Percentage of AdditionalPaidInCapital100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets35.438.938.937.837.840.141.143.544.439.442.542.443.543.442.143.143.345.446.344.545.747.646.751.651.651.851.749.952.051.852.952.153.052.553.451.356.757.558.155.757.159.555.061.7

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


Retained
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value78867256244535329723413480901138428-4.359-42.851-143.621-198.056-313.563-303.557-403.82-463.909-461.025-460.15-450.429-478.603-488.181-516.962-530.097-577.194-626.715-647.348-688.186-713.535-743.262-756.644-763.79-786.107-786.688-798.462-823.312-850.679-865.167-890.27-1122.241
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets14.213.311.28.76.96.25.03.11.91.92.51.90.6-0.1-0.9-3.3-4.5-7.5-7.4-9.5-11.3-11.6-11.4-12.3-13.1-13.4-14.2-14.1-16.0-17.9-18.9-19.8-20.9-24.2-25.0-24.3-27.6-28.1-28.8-28.5-30.2-32.0-32.5-46.1

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value1615272319191927272123192637221819206.262504417-2.084-32.366-36.985-31.629-32.867-17.478-7.7513.694-0.2556.844.3077.1311112119.42710191614155.021
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.30.30.50.50.40.40.40.60.60.40.50.40.60.90.50.40.40.50.21.21.10.4-0.1-0.9-1.0-0.9-0.9-0.5-0.20.1-0.00.20.10.20.40.40.40.30.40.70.60.60.60.2

Treasury Stock Value

us-gaap:TreasuryStockValue

us-gaap:TreasuryStockValue


Treasury
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value219219217217217217217216216216216216216216215215215214214214213213213213213213213212212211211211211211210210168135130490.910.8620.2840.0
Percentage of TreasuryStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets3.94.34.34.24.34.54.64.95.04.54.84.84.94.94.84.94.95.15.25.15.25.45.35.95.95.95.95.75.96.06.26.16.26.97.06.75.94.84.71.70.00.00.00.0

Minority Interest

us-gaap:MinorityInterest

us-gaap:MinorityInterest


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value28282828272726252525252424232322212019191817171616151413121111109.8259.2238.8398.3138.0547.7637.9557.2447.2887.3316.6686.492
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.50.60.60.50.50.60.60.60.60.50.60.60.60.50.50.50.50.50.50.40.40.40.40.50.40.40.40.40.40.30.30.30.30.30.30.30.30.30.30.30.30.30.20.3

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

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value2546000.02393000.02323000.02140000.01737000.01830000.01725000.01944000.01774000.01468000.01227000.01235000.01269000.01287000.01273000.01356000.01463000.01053000.05700000.0-823000.0-821000.0-805000.0-789000.0-815000.0-879000.0-1369000.0934000.0919000.0875000.0972000.0906000.0883000.0648000.0534000.0672000.0611000.0635000.0802000.0963000.01029000.0997000.02021000.0782000.0740000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value2546000.02393000.02323000.02140000.01737000.01830000.01725000.01944000.01774000.01468000.01227000.01235000.01269000.01287000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Parent


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value2546000.02393000.02323000.02140000.01737000.01830000.01725000.01944000.01774000.01468000.01227000.01235000.01269000.01287000.01273000.01356000.01463000.01053000.05700000.0-823000.0-821000.0-805000.0-789000.0-815000.0-879000.0-1369000.0934000.0919000.0875000.0972000.0906000.0883000.0648000.0534000.0672000.0611000.0635000.0802000.0963000.01029000.0997000.02021000.0782000.0740000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:Parent0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Minority Interest Decrease From Distributions To Noncontrolling Interest Holders

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302018-03-31
Value150000.0150000.0150000.0151000.0300000.0150000.0300000.0150000.0136000.0140000.0135000.0135000.0
Percentage of MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302018-03-31
Value150000.0150000.0150000.0151000.0300000.0150000.0300000.0150000.0136000.0140000.0135000.0135000.0
Percentage of MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.0

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
Value279176335191145962801141165223622058147204213971022372181351381541956316520817010313118217410298104141865614114111312017517686103
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 RevenueFromContractWithCustomerExcludingAssessedTax19.913.324.514.212.48.423.810.613.15.821.819.35.514.417.818.69.611.423.320.114.715.923.026.68.622.224.421.013.519.024.122.713.714.414.520.412.68.620.619.216.518.123.422.211.616.1

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-157120000.0-164370000.0-27368000.0-176220000.0-330520000.0-104590000.0-143670000.0-57794000.0-58956000.0-202070000.0-64113000.0-86952000.0-156710000.0-229600000.0-128810000.0-139450000.0-97635000.0-88942000.0-119270000.0-113800000.0-157220000.0-199140000.0-161510000.0-156700000.0-80034000.0-116120000.0-238180000.0-211420000.0-149350000.0-95539000.0-163590000.0-218770000.0-178810000.0-79335000.0-158670000.0-140990000.0-109590000.0-110870000.0-123600000.0-98920000.0-96369000.0-111640000.0-169950000.0-131090000.0-75881000.0-68000000.0
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-11.2-12.4-2.0-13.0-28.2-9.1-12.2-5.3-6.6-22.6-5.9-7.6-14.7-22.4-11.2-12.1-9.7-9.9-11.7-10.5-17.1-22.9-24.1-21.3-10.9-15.6-27.9-26.0-19.5-13.7-21.7-28.5-24.0-11.5-22.0-20.3-16.0-16.9-18.1-13.4-14.0-16.8-22.6-16.5-10.1-10.5

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-48.095-49.444-180.557-235.7042755157-9.553-563.889523-41.21739-14.569-23.9252.053-212.4964440-95.501-57.297-56.91699-50.243-35.115-4.656-5.710.658-56.496-18.4472.2140.07924432-82.202196-6.9922.596-66.18-37.29265-20.482-19.223-66.3981.36-5.596
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-3.4-3.7-13.2-17.42.34.813.4-0.9-63.058.5-3.83.4-1.4-2.30.2-18.54.44.5-9.3-5.310.6-6.614.9-6.8-4.8-0.6-0.70.1-7.4-2.70.30.032.84.8-11.428.3-1.00.4-9.7-5.09.5-3.1-2.6-8.40.2-0.9

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

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value74-47.425131-216.409-158.1384629447-504.014372133168-115.079-102.00777-138.1794364
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.3-3.69.6-16.0-13.54.125.04.4-56.341.712.414.7-10.8-9.96.7-12.04.37.2

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
Value1391351321291241231261291321351421431431421461481451411381411381371221231241241241191121081081069897979390888683838386827875
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

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
Value279176335191145962801141165223622058147204213971022372181351381541956316520817010313118217410298104141865614114111312017517686103
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 RevenueFromContractWithCustomerExcludingAssessedTax19.913.324.514.212.48.423.810.613.15.821.819.35.514.417.818.69.611.423.320.114.715.923.026.68.622.224.421.013.519.024.122.713.714.414.520.412.68.620.619.216.518.123.422.211.616.1

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
Value1251191269255639954-9.45-22.8792856329.54410054115-10.006100604.713-0.875-9.721289.5782813474920402529137.146220.581112427142550785944
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 RevenueFromContractWithCustomerExcludingAssessedTax8.99.09.26.84.75.58.45.0-1.1-2.62.65.03.10.98.84.711.5-1.19.85.50.5-0.1-1.43.81.33.91.55.86.53.05.43.34.01.91.03.20.11.83.63.72.13.86.79.87.96.9

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1261201269256649954-9.006-22.6682857331010155116-9.144101615.366-0.405-9.31229102914485021412630137.672220.872112527142550785844
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.09.19.36.94.85.68.55.0-1.0-2.52.75.03.11.08.94.811.5-1.09.95.60.6-0.0-1.44.01.44.01.75.96.63.05.53.44.12.01.13.20.11.83.73.72.13.96.89.97.96.8

us-gaap:ProfitLoss us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value0.6520.210.2910.7460.7160.6080.6690.4160.4440.2110.5990.630.5930.6511.1461.1950.9520.8621.0520.6530.470.8470.6230.9161.0730.8850.550.720.6550.6020.3840.5260.2590.291-0.1920.711-0.044-0.0430.6630.1570.35
Percentage of ProfitLoss0.50.20.20.81.30.90.70.8-4.9-0.92.11.11.86.41.12.10.8-9.41.712.2-116.02.96.13.12.21.82.61.72.52.02.86.91.133.4-1.72.8-0.2-0.32.60.30.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.10.10.10.10.00.00.00.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.00.0-0.00.1-0.0-0.00.10.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Parent


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value1251191269255639954-9.45-22.8792856329.54410354115-10.006604.713-0.875289.57828474920402529137.146220.58111242714255078
Percentage of ProfitLoss99.599.899.899.298.799.199.399.2104.9100.997.998.998.293.6101.697.999.2109.498.387.8216.097.193.996.997.898.297.498.397.598.097.293.198.966.6101.797.2100.2100.397.499.799.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.99.09.26.84.75.58.45.0-1.1-2.62.65.03.10.99.04.711.5-1.15.50.5-0.13.81.33.95.86.53.05.43.34.01.91.03.20.11.83.63.72.13.86.79.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Parent0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value1251191269255639954-9.45-22.879285632
Percentage of ProfitLoss99.599.899.899.298.799.199.399.2104.9100.997.998.998.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.99.09.26.84.75.58.45.0-1.1-2.62.65.03.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-157120000.0-164370000.0-27368000.0-176220000.0-330520000.0-104590000.0-143670000.0-57794000.0-58956000.0-202070000.0-64113000.0-86952000.0-156710000.0-229600000.0-128810000.0-139450000.0-97635000.0-88942000.0-119270000.0-113800000.0-157220000.0-199140000.0-161510000.0-156700000.0-80034000.0-116120000.0-238180000.0-211420000.0-149350000.0-95539000.0-163590000.0-218770000.0-178810000.0-79335000.0-158670000.0-140990000.0-109590000.0-110870000.0-123600000.0-98920000.0-96369000.0-111640000.0-169950000.0-131090000.0-75881000.0-68000000.0
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-11.2-12.4-2.0-13.0-28.2-9.1-12.2-5.3-6.6-22.6-5.9-7.6-14.7-22.4-11.2-12.1-9.7-9.9-11.7-10.5-17.1-22.9-24.1-21.3-10.9-15.6-27.9-26.0-19.5-13.7-21.7-28.5-24.0-11.5-22.0-20.3-16.0-16.9-18.1-13.4-14.0-16.8-22.6-16.5-10.1-10.5

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
Value163110277141785514354702036988158230136142183881681251571981851588810623821113495164179110112153147111121142991101131681337567
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-48.095-49.444-180.557-235.7042755157-9.553-563.889523-41.21739-14.569-23.9252.053-212.4964440-95.501-57.297-56.91699-50.243-35.115-4.656-5.710.658-56.496-18.4472.2140.07924432-82.202196-6.9922.596-66.18-37.29265-20.482-19.223-66.3981.36-5.596
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-3.4-3.7-13.2-17.42.34.813.4-0.9-63.058.5-3.83.4-1.4-2.30.2-18.54.44.5-9.3-5.310.6-6.614.9-6.8-4.8-0.6-0.70.1-7.4-2.70.30.032.84.8-11.428.3-1.00.4-9.7-5.09.5-3.1-2.6-8.40.2-0.9

Proceeds From Issuance Of Long Term Debt

us-gaap:ProceedsFromIssuanceOfLongTermDebt

us-gaap:ProceedsFromIssuanceOfLongTermDebt


Proceeds
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value10526110042572224308640.00.08.89165501.011340.0
Percentage of ProceedsFromIssuanceOfLongTermDebt100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.00.0

us-gaap:ProceedsFromIssuanceOfLongTermDebt us-gaap:StatementGeographical, us-gaap:DebtInstrument, us-gaap:LongtermDebtType

country:JP, amkr:TermLoanFixedRateAt120DueDecember2025, amkr:SubsidiaryTermLoans


Proceeds
Period End2020-12-31
Value10900
Percentage of ProceedsFromIssuanceOfLongTermDebt10381.0

country:KR, amkr:TermLoanDueJune2020, amkr:SubsidiaryTermLoans


Proceeds
Period End2020-09-30
Value0.0
Percentage of ProceedsFromIssuanceOfLongTermDebt0.0

country:KR, amkr:TermLoanDueMay2021, amkr:SubsidiaryTermLoans


Proceeds
Period End2020-12-312020-06-30
Value0.060000
Percentage of ProceedsFromIssuanceOfLongTermDebt0.00.0

country:KR, amkr:TermLoanDueSeptember2022, amkr:SubsidiaryTermLoans


Proceeds
Period End2020-12-312020-09-302019-09-30
Value0.00.060
Percentage of ProceedsFromIssuanceOfLongTermDebt0.00.060.0

us-gaap:ProceedsFromIssuanceOfLongTermDebt us-gaap:StatementGeographical, us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:VariableRate

country:CN, amkr:TermLoanLIBORPlus110DueMarch2024, amkr:SubsidiaryTermLoans, us-gaap:LondonInterbankOfferedRateLIBOR


Proceeds
Period End2021-03-31
Value50
Percentage of ProceedsFromIssuanceOfLongTermDebt0.0

us-gaap:ProceedsFromIssuanceOfLongTermDebt us-gaap:StatementGeographical, us-gaap:DebtInstrument, us-gaap:VariableRate

country:CN, amkr:TermLoanLIBORPlus110DueMarch2024, us-gaap:LondonInterbankOfferedRateLIBOR


Proceeds
Period End2021-03-31
Value50
Percentage of ProceedsFromIssuanceOfLongTermDebt0.0

Repayments Of Long Term Debt

us-gaap:RepaymentsOfLongTermDebt us-gaap:StatementGeographical, us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:RepaymentsOfLongTermDebt

country:KR, amkr:TermLoanDueMay2021, amkr:SubsidiaryTermLoans


Repayments
Period End2020-12-312020-06-30
Value0.060000
Percentage of RepaymentsOfLongTermDebt0.0100.0

country:KR, amkr:TermLoanDueSeptember2022, amkr:SubsidiaryTermLoans


Repayments
Period End2020-12-31
Value100
Percentage of RepaymentsOfLongTermDebt0.0

Payments Of Dividends Common Stock

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:PaymentsOfDividendsCommonStock


Payments
Period End2021-06-302021-03-31
Value9.76419
Percentage of PaymentsOfDividendsCommonStock100.0100.0

Debt Instrument Interest Rate Stated Percentage

us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:DebtInstrumentInterestRateStatedPercentage

amkr:SeniorNotesDueSeptember2027, us-gaap:SeniorNotes


Debt
Period End2020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value6.6250.066250.066250.066250.066250.066250.06625
Percentage of DebtInstrumentInterestRateStatedPercentage100.0100.0100.0100.0100.0100.0100.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations amkr:SeniorNotesDueSeptember2027 us-gaap:SeniorNotes0.00.00.00.00.00.00.0

us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:StatementGeographical, us-gaap:DebtInstrument, us-gaap:LongtermDebtType

country:JP, amkr:TermLoanDueJune2022, amkr:SubsidiaryTermLoans


Debt
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value0.860.860.860.00860.00860.00860.00860.00860.00860.0086
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.013.013.013.013.013.013.013.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations country:JP amkr:TermLoanDueJune2022 amkr:SubsidiaryTermLoans0.00.00.00.00.00.00.00.00.00.0

country:JP, amkr:TermLoanFixedRateat0.60DueJuly2022, amkr:SubsidiaryTermLoans


Debt
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value0.60.60.60.0060.0060.0060.0060.0060.0060.006
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.09.19.19.19.19.19.19.10.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations country:JP amkr:TermLoanFixedRateat0.60DueJuly2022 amkr:SubsidiaryTermLoans0.00.00.00.00.00.00.00.00.00.0

country:JP, amkr:TermLoanFixedRateat1.30DueJuly2023, amkr:SubsidiaryTermLoans


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1.31.31.31.30.0130.0130.0130.0130.0130.0130.013
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.019.60.019.619.619.619.619.619.60.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations country:JP amkr:TermLoanFixedRateat1.30DueJuly2023 amkr:SubsidiaryTermLoans0.00.00.00.00.00.00.00.00.00.00.0

country:JP, amkr:TermLoanFixedRateat1.35DueDecember2024, amkr:SubsidiaryTermLoans


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value1.351.351.351.350.01350.01350.0135
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.020.40.020.420.420.4
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations country:JP amkr:TermLoanFixedRateat1.35DueDecember2024 amkr:SubsidiaryTermLoans0.00.00.00.00.00.00.0

country:KR, amkr:FixedRateTermLoanDueMay2021, amkr:SubsidiaryTermLoans


Debt
Period End2020-12-31
Value1.8
Percentage of DebtInstrumentInterestRateStatedPercentage27.2
Percentage of LongTermDebtAndCapitalLeaseObligations0.0
Percentage of LongTermDebtAndCapitalLeaseObligations country:KR amkr:FixedRateTermLoanDueMay2021 amkr:SubsidiaryTermLoans0.0

country:KR, amkr:TermLoanDueMay2021, amkr:SubsidiaryTermLoans


Debt
Period End2021-03-312020-06-302020-05-31
Value1.80.0180.018
Percentage of DebtInstrumentInterestRateStatedPercentage0.027.20.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations country:KR amkr:TermLoanDueMay2021 amkr:SubsidiaryTermLoans0.00.00.0

country:KR, amkr:TermLoanFixedRateAt185DueApril2024, amkr:SubsidiaryTermLoans


Debt
Period End2021-06-30
Value1.85
Percentage of DebtInstrumentInterestRateStatedPercentage0.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.0
Percentage of LongTermDebtAndCapitalLeaseObligations country:KR amkr:TermLoanFixedRateAt185DueApril2024 amkr:SubsidiaryTermLoans0.0

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

country:KR, amkr:TermLoanDueApril2024, amkr:SubsidiaryTermLoans, us-gaap:SubsequentEvent


Debt
Period End2021-04-30
Value1.85
Percentage of DebtInstrumentInterestRateStatedPercentage0.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.0
Percentage of LongTermDebtAndCapitalLeaseObligations country:KR amkr:TermLoanDueApril2024 amkr:SubsidiaryTermLoans us-gaap:SubsequentEvent0.0

us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:StatementGeographical, us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:VariableRate

country:KR, amkr:RevolvingCreditFacilityDueOctober2021, us-gaap:LineOfCredit, amkr:ApplicableBankRate


Debt
Period End2020-12-31
Value1.11
Percentage of DebtInstrumentInterestRateStatedPercentage16.8
Percentage of LongTermDebtAndCapitalLeaseObligations0.0
Percentage of LongTermDebtAndCapitalLeaseObligations country:KR amkr:RevolvingCreditFacilityDueOctober2021 us-gaap:LineOfCredit amkr:ApplicableBankRate0.0

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

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber


Share
Period End2020-12-312019-12-312018-12-312017-12-312017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value4366000.05845000.04743000.04752000.05151000.02443000.03335000.03814000.03711000.03727000.03789000.03802000.03734000.03822000.04873000.04965000.03888000.04348000.04893000.04975000.05078000.05400000.06052000.06231000.06414000.07843000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice


Share
Period End2020-12-312019-12-312018-12-312017-12-312017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value9.79.118.798.868.496.936.656.356.356.496.446.466.416.256.526.517.339.359.529.539.519.689.9710.09.9710.26
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets 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
Value1601511611449310710987646860
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 End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-312011-09-302011-06-302010-12-312009-12-312008-12-31
Value3029323025232620252525242425272524242324261312108.112127.06.96.727119.48.78.2185.84.87.99.69.9105.09120
Percentage of UnrecognizedTaxBenefits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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
Value12113611883165168149179209214223
Percentage of DeferredTaxAssetsValuationAllowance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsValuationAllowance us-gaap:StatementGeographical

country:PT


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value585640390.0
Percentage of DeferredTaxAssetsValuationAllowance48.241.434.646.80.0

country:US


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value62807743164
Percentage of DeferredTaxAssetsValuationAllowance51.858.665.452.599.5

amkr:AccountsReceivableSoldwithoutRecourse amkr:FactoringofAccountsReceivable

amkr:AccountsReceivableSoldwithoutRecourse

amkr:FactoringFees


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value0.30.20.70.60.61.01.11.11.11.21.61.62.01.81.71.30.80.80.80.80.50.40.40.30.40.40.50.40.30.30.2
Percentage of AccountsReceivableSoldwithoutRecourse100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

amkr:TotalFactored


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value1051061301039417020017514915525119320322521013513313214216113113988827181113102556970
Percentage of AccountsReceivableSoldwithoutRecourse35200.053150.018700.017316.715666.717050.018200.015945.513554.512975.015731.212100.010155.012527.812400.010392.316637.516525.017787.520200.026220.034775.022050.027466.717900.020325.022640.025500.018600.023000.035200.0

amkr:OtherNonoperatingIncomeExpenseNet

amkr:OtherNonoperatingIncomeExpenseNet


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
Value547000.0251000.0128000.0129000.0293000.0256000.0670000.0496000.0398000.0488000.01955000.0245000.02936000.0293000.01378000.0-227000.0-17000.09000.070000.0133000.0706000.027000.0-275000.02554000.0-90000.0-278000.01930000.0778000.0548000.0-413000.0361000.07000.0108000.0229000.0
Percentage of OtherNonoperatingIncomeExpenseNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation

us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-03-312011-03-31
Value01321000.080000.068000.059000.054000.01178000.047000.035000.048000.036000.048000.049000.056000.065000.049000.01168000.0210000.0286000.0208000.0119000.0119000.0182000.0121000.0197000.0230000.0231000.0342000.0884000.0122000.0232000.0400000.0700000.0
Percentage of AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation us-gaap:StatementEquityComponents

us-gaap:Parent


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value01321000.080000.068000.059000.054000.01178000.047000.035000.048000.036000.048000.049000.056000.065000.049000.01168000.0210000.0286000.0208000.0119000.0119000.0182000.0121000.0197000.0230000.0231000.0342000.0884000.0122000.0232000.0
Percentage of AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStock


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value01321000.080000.068000.059000.054000.01178000.047000.035000.048000.036000.048000.049000.056000.0
Percentage of AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CapitalExpendituresIncurredButNotYetPaid

us-gaap:CapitalExpendituresIncurredButNotYetPaid


Capital
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value186273-146.97868152107-80.70922101241.82614152244.1745721211-33.6885.01-25.186199211098111-167.45942108144
Percentage of CapitalExpendituresIncurredButNotYetPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConcentrationRiskPercentage1 us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType, us-gaap:ContractWithCustomerSalesChannel

us-gaap:ConcentrationRiskPercentage1

us-gaap:RevenueFromContractWithCustomer, amkr:DistributionChannelConcentrationRisk, amkr:SalesChannelAutomotiveIndustrialAndOther


Concentration
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
Value22.022.017.00.190.230.260.290.280.250.260.260.240.270.29
Percentage of ConcentrationRiskPercentage1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomer, amkr:DistributionChannelConcentrationRisk, amkr:SalesChannelCommunications


Concentration
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
Value40.040.043.00.380.380.410.370.380.470.420.420.460.40.37
Percentage of ConcentrationRiskPercentage1181.8181.8252.9200.0165.2157.7127.6135.7188.0161.5161.5191.7148.1127.6

us-gaap:RevenueFromContractWithCustomer, amkr:DistributionChannelConcentrationRisk, amkr:SalesChannelComputing


Concentration
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
Value16.017.015.00.160.150.150.190.20.170.190.190.170.190.2
Percentage of ConcentrationRiskPercentage172.777.388.284.265.257.765.571.468.073.173.170.870.469.0

us-gaap:RevenueFromContractWithCustomer, amkr:DistributionChannelConcentrationRisk, amkr:SalesChannelConsumerGoods


Concentration
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value22.021.025.00.270.2418.00.150.14
Percentage of ConcentrationRiskPercentage1100.095.5147.1142.1104.36923.151.750.0

us-gaap:ContractWithCustomerLiabilityRevenueRecognized

us-gaap:ContractWithCustomerLiabilityRevenueRecognized


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value7.78.11.63.33.95.31.8999999999999981
Percentage of ContractWithCustomerLiabilityRevenueRecognized100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrumentBasisSpreadOnVariableRate1 us-gaap:Range, us-gaap:StatementGeographical, us-gaap:CreditFacility, us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:VariableRate

us-gaap:DebtInstrumentBasisSpreadOnVariableRate1

srt:Maximum, country:SG, us-gaap:RevolvingCreditFacility, amkr:SeniorSecuredRevolvingCreditFacilitydueJuly2023, us-gaap:LineOfCredit, us-gaap:LondonInterbankOfferedRateLIBOR


Debt
Period End2021-03-312020-03-31
Value1.750.0175
Percentage of DebtInstrumentBasisSpreadOnVariableRate1100.0100.0

srt:Minimum, country:SG, us-gaap:RevolvingCreditFacility, amkr:SeniorSecuredRevolvingCreditFacilitydueJuly2023, us-gaap:LineOfCredit, us-gaap:LondonInterbankOfferedRateLIBOR


Debt
Period End2021-03-312020-03-31
Value1.250.0125
Percentage of DebtInstrumentBasisSpreadOnVariableRate171.471.4

us-gaap:DebtInstrumentBasisSpreadOnVariableRate1 us-gaap:Range, us-gaap:StatementGeographical, us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:VariableRate

srt:Maximum, country:JP, amkr:Shorttermtermloanvariablerate, amkr:SubsidiaryTermLoans, amkr:TokyoInterbankOfferedRateTIBOR


Debt
Period End2021-03-312020-03-312019-03-31
Value0.30.0020.0026
Percentage of DebtInstrumentBasisSpreadOnVariableRate117.111.40.0

us-gaap:DebtInstrumentBasisSpreadOnVariableRate1 us-gaap:StatementGeographical, us-gaap:CreditFacility, us-gaap:LongtermDebtType

country:KR, us-gaap:RevolvingCreditFacility, us-gaap:LineOfCredit


Debt
Period End2021-03-31
Value1.11
Percentage of DebtInstrumentBasisSpreadOnVariableRate163.4

us-gaap:DebtInstrumentBasisSpreadOnVariableRate1 us-gaap:StatementGeographical, us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:VariableRate

country:KR, amkr:TermLoanDueApril2023, amkr:SubsidiaryTermLoans, amkr:ApplicableBankRate


Debt
Period End2021-03-31
Value1.77
Percentage of DebtInstrumentBasisSpreadOnVariableRate1101.1

country:KR, amkr:TermLoanDueDecember2028, amkr:SubsidiaryTermLoans, amkr:ApplicableBankRate


Debt
Period End2021-03-312020-03-312018-12-31
Value1.980.01980.0198
Percentage of DebtInstrumentBasisSpreadOnVariableRate1113.1113.10.0

us-gaap:DebtInstrumentBasisSpreadOnVariableRate1 us-gaap:StatementGeographical, us-gaap:DebtInstrument, us-gaap:VariableRate

country:CN, amkr:TermLoanLIBORPlus110DueMarch2024, us-gaap:LondonInterbankOfferedRateLIBOR


Debt
Period End2021-03-31
Value1.1
Percentage of DebtInstrumentBasisSpreadOnVariableRate162.9

country:CN, amkr:TermLoanLIBORplus1.40DueMarch2022, us-gaap:LondonInterbankOfferedRateLIBOR


Debt
Period End2021-03-312020-03-31
Value1.40.014
Percentage of DebtInstrumentBasisSpreadOnVariableRate180.080.0

country:CN, amkr:TermLoanLIBORplus1.60DueMarch2022, us-gaap:LondonInterbankOfferedRateLIBOR


Debt
Period End2021-03-312020-03-31
Value1.60.016
Percentage of DebtInstrumentBasisSpreadOnVariableRate191.491.4

us-gaap:DebtInstrumentPeriodicPaymentPrincipal us-gaap:StatementGeographical, us-gaap:DebtInstrument

us-gaap:DebtInstrumentPeriodicPaymentPrincipal

country:CN, amkr:TermLoanOneLIBORPlus110DueMarch2024


Debt
Period End2021-03-31
Value0.5
Percentage of DebtInstrumentPeriodicPaymentPrincipal100.0

country:CN, amkr:TermLoanTwoLIBORPlus110DueMarch2024


Debt
Period End2021-03-31
Value0.5
Percentage of DebtInstrumentPeriodicPaymentPrincipal100.0

us-gaap:DebtInstrumentPeriodicPaymentPrincipal us-gaap:StatementGeographical, us-gaap:DebtInstrument, us-gaap:LongtermDebtType

country:CN, amkr:TermLoanOneLIBORPlus110DueMarch2024, amkr:SubsidiaryTermLoans


Debt
Period End2021-03-31
Value0.5
Percentage of DebtInstrumentPeriodicPaymentPrincipal100.0

country:CN, amkr:TermLoanTwoLIBORPlus110DueMarch2024, amkr:SubsidiaryTermLoans


Debt
Period End2021-03-31
Value0.5
Percentage of DebtInstrumentPeriodicPaymentPrincipal100.0

us-gaap:DefinedBenefitPlanActuarialGainLoss

us-gaap:DefinedBenefitPlanActuarialGainLoss


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-0.033-0.0316.146-0.014-0.014-0.014120.0940.0940.094-6.1040.0360.0420.035-1.325-0.018-0.022-0.022
Percentage of DefinedBenefitPlanActuarialGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value1434000.01429000.01331000.01420000.01381000.01374000.01614000.01585000.01595000.01618000.01391000.01390000.01417000.01442000.01152000.01124000.01133000.01128000.0
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanInterestCost

us-gaap:DefinedBenefitPlanInterestCost


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value1241000.01242000.01206000.01281000.01246000.01247000.01318000.01297000.01305000.01324000.01199000.01199000.01226000.01243000.01038000.01009000.01013000.01007000.0
Percentage of DefinedBenefitPlanInterestCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value6.5886.6316.9347.5977.4247.4237.4547.3657.4057.5897.8547.8978.0668.1828.5158.3488.3328.272
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanServiceCost

us-gaap:DefinedBenefitPlanServiceCost


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value6.7486.7877.0457.7227.5457.5367.8427.7477.7897.9778.0748.1248.2998.4168.6088.4458.438.34
Percentage of DefinedBenefitPlanServiceCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedContributionPlanCostRecognized

us-gaap:DefinedContributionPlanCostRecognized


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value5.2396.7564.3413.6183.7254.8162.8922.9523.3524.4052.5922.5953.0173.9962.3912.232.5813.1981.6941.9392.2312.91.71.82.232.91.41.6
Percentage of DefinedContributionPlanCostRecognized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Depreciation

us-gaap:Depreciation


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value13913513212912412312512813213514214314214214514814414113814013713612112212312412411911110810710597969692898756818182
Percentage of Depreciation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeGainLossOnDerivativeNet

us-gaap:DerivativeGainLossOnDerivativeNet


Derivative
Period End2021-06-302021-03-312020-06-302020-03-31
Value-0.9-34.9-0.1-1.2
Percentage of DerivativeGainLossOnDerivativeNet100.0100.0100.0100.0

us-gaap:DividendsCash

us-gaap:DividendsCash


Dividends
Period End2021-06-302021-03-31
Value9.7739.777
Percentage of DividendsCash100.0100.0

us-gaap:DividendsCash us-gaap:StatementEquityComponents

us-gaap:Parent


Dividends
Period End2021-06-302021-03-31
Value9.7739.777
Percentage of DividendsCash100.0100.0

us-gaap:RetainedEarnings


Dividends
Period End2021-06-302021-03-31
Value9.7739.777
Percentage of DividendsCash100.0100.0

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Effect
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value0.123-10.3973.363.873-0.877-0.3-0.5150.2541.96-0.8293.069-4.62-2.5453.892-0.424-0.187-0.84110
Percentage of EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeasePrincipalPayments

us-gaap:FinanceLeasePrincipalPayments


Finance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-09-30
Value3417000.03216000.02658000.02317000.02521000.02355000.02216000.01612000.01370000.01376000.0980000.0
Percentage of FinanceLeasePrincipalPayments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ForeignCurrencyTransactionGainLossBeforeTax

us-gaap:ForeignCurrencyTransactionGainLossBeforeTax


Foreign
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-0.681-0.619-3.307-3.069-3.4610.229-3.5250.174-0.6062.013-2.496-1.3527.11-4.713-3.1450.4542.252-11.38415-7.124-0.759-3.623-1.9028.4991.459-0.2076.4277.928-4.213-0.3343.7852.716-2.0411.1660.276-2.394-1.277-0.79-0.523.005-2.932-1.731-4.746-8.4560.421-0.975
Percentage of ForeignCurrencyTransactionGainLossBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance

us-gaap:IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance


Income
Period End2020-12-312019-12-312019-06-302019-03-31
Value-20.2-3.80.014
Percentage of IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance100.0100.00.0100.0

us-gaap:IncreaseDecreaseInOperatingCapital

us-gaap:IncreaseDecreaseInOperatingCapital


Increase
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value-15.54980413699872477-18.6481180.339-15.6996022-14.2056.137-5.311-43.38569-20.465-6.35630-6.699-40.952511-24.5315.14242-33.608-6.89-6.123-11.2755814
Percentage of IncreaseDecreaseInOperatingCapital100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements


Incremental
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-31
Value1.6881.8620.0340.9170.3120.4140.0420.3510.00.0-0.0590.3960.4530.602-0.0230.5720.8160.00.8390.3440.00.0860.4810.7161.1721.1150.1090.0120.010.0180.0370.0530.164
Percentage of IncrementalCommonSharesAttributableToShareBasedPaymentArrangements100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestIncomeDepositsWithFinancialInstitutions

us-gaap:InterestIncomeDepositsWithFinancialInstitutions


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
Value230000.0279000.0474000.01016000.01701000.02258000.01724000.01269000.01598000.02064000.01249000.0941000.0955000.0988000.0906000.0843000.0955000.0511000.0293000.0334000.0295000.0404000.0343000.0523000.0690000.0983000.0897000.0920000.0831000.0711000.0677000.01605000.0676000.0827000.0671000.0772000.0828000.0889000.0961000.0648000.0553000.0587000.0675000.0695000.0847000.0733000.0
Percentage of InterestIncomeDepositsWithFinancialInstitutions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-06-302019-03-31
Value-14000.0-32000.0-172000.0-165000.0251000.0108000.000
Percentage of OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.00.00.0

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value0.239-11.4993.8083.99-0.4380.583-7.8530.0515.918-2.2245.693-6.611-11.14415-0.969-0.83313-43.915.88326190.2964.597-5.3781.216-14.979-9.7430.6563.829-7.1682.459-2.899-4.252
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterest


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value0.278-11.444.191-0.6990.4750.0515.918-2.2247.601-6.611-11.14415-0.692-0.969-0.83313-46.3785.8832619
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax116.399.5105.0159.681.5100.0100.0100.0133.5100.0100.0100.00.0100.0100.0100.0105.6100.0102.097.3

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value-0.039-0.059-0.151-0.2010.2610.108
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax-16.30.5-4.0-5.0-59.618.5

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value-26000.0-25000.0-568000.0-11000.0-11000.0-11000.07165000.0125000.057000.0132000.03518000.045000.042000.039000.0-4902000.0-15000.0-18000.0-230000.0-2492000.0-24000.0-23000.0-24000.0-1034000.0-22000.0-22000.0-22000.02134000.0-16000.0-486000.0-120000.051000.0-4194000.0-75000.0-142000.0-3535000.0-219000.0-36000.0-1347000.0
Percentage of OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherNoncashIncomeExpense

us-gaap:OtherNoncashIncomeExpense


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value2.065-2.3721-10.217-1.864-8.28747-18.421-17.184-15.928-5.935-1.233-1.4954.734-1.625.976-4.1037.89-7.24-1.7952.2333.944-18.7660.5734.6549.525-28.683.811194.274-12.016-1.219130.840.498-1.1570.1091.7721.6572.1111.248-4.896-5.024-3.99
Percentage of OtherNoncashIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForDerivativeInstrumentInvestingActivities

us-gaap:PaymentsForDerivativeInstrumentInvestingActivities


Payments
Period End2021-06-302021-03-312020-06-302020-03-31
Value9.666282.0388.557
Percentage of PaymentsForDerivativeInstrumentInvestingActivities100.0100.0100.0100.0

us-gaap:PaymentsForProceedsFromOtherInvestingActivities

us-gaap:PaymentsForProceedsFromOtherInvestingActivities


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-2.058-0.0298.757-12.5264.358-5.163-0.6853.217-3.4330.569-2.367-0.513-1.991-0.6560.048-0.517-0.3752.492-1.9861.2020.5020.4720.487-0.4460.9930.3220.010.0360.0870.2660.112-1.0171.7830.2497.9640.0820.15-1.683-2.1511.642.9571.057-5.2730.9993.6146.168
Percentage of PaymentsForProceedsFromOtherInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForRestructuring

us-gaap:PaymentsForRestructuring


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value2.7145.7075.5013.9641.4163.442
Percentage of PaymentsForRestructuring100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForRestructuring us-gaap:RestructuringCostAndReserve

us-gaap:EmployeeSeverance


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value0.2891.9282.6860.8850.1850.30.00.03.9730.02.472.4525.9711.638
Percentage of PaymentsForRestructuring10.633.848.822.313.18.70.00.00.00.00.00.00.00.0

us-gaap:FacilityClosing


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value2.373.2571.8862.3880.782.482
Percentage of PaymentsForRestructuring87.357.134.360.255.172.1

us-gaap:OtherRestructuring


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value0.0550.5220.9290.6910.4510.66
Percentage of PaymentsForRestructuring2.09.116.917.431.919.2

us-gaap:PaymentsToAcquireAvailableForSaleSecuritiesDebt us-gaap:SubsequentEventType

us-gaap:PaymentsToAcquireAvailableForSaleSecuritiesDebt

us-gaap:SubsequentEvent


Payments
Period End2021-01-31
Value60
Percentage of PaymentsToAcquireAvailableForSaleSecuritiesDebt100.0

us-gaap:PaymentsToAcquireShortTermInvestments

us-gaap:PaymentsToAcquireShortTermInvestments


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312015-12-312015-09-302014-12-312014-09-302013-12-312013-09-30
Value809259150269550.00.05.9350.00.00.00.00.00.00.0
Percentage of PaymentsToAcquireShortTermInvestments100.0100.0100.0100.0100.0100.00.00.0100.00.00.00.00.00.00.00.0

us-gaap:PensionAndOtherPostretirementBenefitContributions us-gaap:RetirementPlanSponsorLocation, us-gaap:SubsequentEventType

us-gaap:PensionAndOtherPostretirementBenefitContributions

country:KR, us-gaap:SubsequentEvent


Pension
Period End2020-12-31
Value30
Percentage of PensionAndOtherPostretirementBenefitContributions100.0

us-gaap:ProceedsFromDerivativeInstrumentInvestingActivities

us-gaap:ProceedsFromDerivativeInstrumentInvestingActivities


Proceeds
Period End2021-06-302021-03-312020-06-302020-03-31
Value7.5932.963.8967.661
Percentage of ProceedsFromDerivativeInstrumentInvestingActivities100.0100.0100.0100.0

us-gaap:ProceedsFromIssuanceOfOtherLongTermDebt

us-gaap:ProceedsFromIssuanceOfOtherLongTermDebt


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value70501050.020124261100425720.0800.0260333752815839233250.00.00.0
Percentage of ProceedsFromIssuanceOfOtherLongTermDebt100.0100.0100.00.0100.0100.0100.0100.0100.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:ProceedsFromLongTermLinesOfCredit

us-gaap:ProceedsFromLongTermLinesOfCredit


Proceeds
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.0308120110087850.0
Percentage of ProceedsFromLongTermLinesOfCredit0.0100.0100.0100.0100.0100.0100.00.0

us-gaap:ProceedsFromLongTermLinesOfCredit us-gaap:StatementGeographical, us-gaap:CreditFacility, us-gaap:DebtInstrument, us-gaap:LongtermDebtType

country:TW, us-gaap:RevolvingCreditFacility, amkr:RevolvingCreditFacilitydueDecember2024, us-gaap:LineOfCredit


Proceeds
Period End2020-12-312020-09-302020-06-302020-03-312019-12-31
Value0.0360.03620
Percentage of ProceedsFromLongTermLinesOfCredit0.0120.00.017.920.0

us-gaap:ProceedsFromLongTermLinesOfCredit us-gaap:StatementGeographical, us-gaap:CreditFacility, us-gaap:LongtermDebtType

country:KR, us-gaap:RevolvingCreditFacility, us-gaap:LineOfCredit


Proceeds
Period End2020-12-312020-09-302020-03-31
Value0.03015
Percentage of ProceedsFromLongTermLinesOfCredit0.0100.07.5

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value594372736.9386.1340.00.0
Percentage of ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities100.0100.0100.0100.0100.0100.00.00.0

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value1250000.07037000.0-9477000.06735000.0863000.0109000.0962000.01902000.0-1017000.0-2848000.02541000.0-2974000.037000.0455000.0-2620000.0-136000.0917000.0-356000.0-3021000.02189000.0
Percentage of ProceedsFromPaymentsForOtherFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value2519-10.533298.5620.031
Percentage of ProceedsFromSaleOfAvailableForSaleSecuritiesDebt100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment

us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1.7020.5471.1090.3210.5021.8871.6220.2488.0670.181.2351.0030.2610.3428.212.3581291.83531130.4720.1211.7331.1430.8153.2540.6450.5360.9080.7260.7041.4120.47924-1.0322.7610.3770.6210.490.69140.2780.7261.3370.6980.364
Percentage of ProceedsFromSaleOfPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromShortTermDebt

us-gaap:ProceedsFromShortTermDebt


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value0.03.6790.02448140.0210.0290.0167.2640.0279.1052713212.964240.0
Percentage of ProceedsFromShortTermDebt0.0100.00.0100.0100.0100.00.0100.00.0100.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax


Reclassification
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value-0.051-0.052-0.153-0.047-0.001-0.0110.2750.1250.0570.1321.610.0450.0420.039-0.015-0.018-0.23-0.024-0.024-0.023-0.024-29.986-0.022-0.022-0.0220.41-0.01612-0.120.655-0.074-0.075-0.142
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustmentIncludingPortionAttributableToNoncontrollingInterest


Reclassification
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-0.026-0.025-0.174-0.011-0.012-0.0110.2750.1250.0570.1321.610.0450.0420.0390.173-0.015-0.018-0.23-0.024-0.024-0.023-0.024
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax51.048.1113.723.41200.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Reclassification
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value-0.025-0.0270.021-0.0360.0110.0
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax49.051.9-13.776.6-1100.0-0.0

us-gaap:RepaymentsOfLongTermLinesOfCredit

us-gaap:RepaymentsOfLongTermLinesOfCredit


Repayments
Period End2020-12-312020-09-302019-12-312019-09-30
Value0.011618087
Percentage of RepaymentsOfLongTermLinesOfCredit0.0100.0100.0100.0

us-gaap:RepaymentsOfLongTermLinesOfCredit us-gaap:StatementGeographical, us-gaap:CreditFacility, us-gaap:DebtInstrument, us-gaap:LongtermDebtType

country:TW, us-gaap:RevolvingCreditFacility, amkr:RevolvingCreditFacilitydueDecember2024, us-gaap:LineOfCredit


Repayments
Period End2020-12-312020-09-30
Value0.056
Percentage of RepaymentsOfLongTermLinesOfCredit0.048.3

us-gaap:RepaymentsOfLongTermLinesOfCredit us-gaap:StatementGeographical, us-gaap:CreditFacility, us-gaap:LongtermDebtType

country:KR, us-gaap:RevolvingCreditFacility, us-gaap:LineOfCredit


Repayments
Period End2020-12-312020-09-30
Value0.030
Percentage of RepaymentsOfLongTermLinesOfCredit0.025.9

us-gaap:RepaymentsOfOtherLongTermDebt

us-gaap:RepaymentsOfOtherLongTermDebt


Repayments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value104792781692917215114
Percentage of RepaymentsOfOtherLongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RepaymentsOfShortTermDebt

us-gaap:RepaymentsOfShortTermDebt


Repayments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value2.6287.803119.395579.40910161410113.57914171819181413131111
Percentage of RepaymentsOfShortTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestructuringCharges

us-gaap:RestructuringCharges


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value1.0331.98.5235.7081.8561.919
Percentage of RestructuringCharges100.0100.0100.0100.0100.0100.0

us-gaap:RestructuringCharges us-gaap:RestructuringCostAndReserve

us-gaap:EmployeeSeverance


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value0.1110.3852.9112.3570.250.030.00.02.4611.4282.4232.11.9674.0214.0510.00.07.16
Percentage of RestructuringCharges10.720.334.241.313.51.60.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:FacilityClosing


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value0.8791.1984.552.6051.2141.31
Percentage of RestructuringCharges85.163.153.445.665.468.3

us-gaap:OtherRestructuring


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value0.0430.3171.0620.7460.3920.579
Percentage of RestructuringCharges4.216.712.513.121.130.2

us-gaap:RestructuringCharges us-gaap:RestructuringPlan

amkr:JapanConsolidationActivities


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value1.01.98.55.71.91.9
Percentage of RestructuringCharges96.8100.099.799.9102.499.0

us-gaap:RestructuringReserveTranslationAndOtherAdjustment

us-gaap:RestructuringReserveTranslationAndOtherAdjustment


Restructuring
Period End2020-12-312020-09-302020-06-302020-03-31
Value9000.024000.01000.0-15000.0
Percentage of RestructuringReserveTranslationAndOtherAdjustment100.0100.0100.0100.0

us-gaap:RestructuringReserveTranslationAndOtherAdjustment us-gaap:RestructuringCostAndReserve

us-gaap:EmployeeSeverance


Restructuring
Period End2021-06-302021-03-312020-12-312020-03-31
Value-1000.0-1000.0-12000.0-1000.0
Percentage of RestructuringReserveTranslationAndOtherAdjustment0.00.0-133.36.7

us-gaap:FacilityClosing


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value-710000.01000.022000.015000.01000.0-12000.0
Percentage of RestructuringReserveTranslationAndOtherAdjustment0.00.0244.462.5100.080.0

us-gaap:OtherRestructuring


Restructuring
Period End2020-12-312020-09-302020-06-302020-03-31
Value-1000.01000.0-1000.0-2000.0
Percentage of RestructuringReserveTranslationAndOtherAdjustment-11.14.2-100.013.3

us-gaap:SharesPaidForTaxWithholdingForShareBasedCompensation us-gaap:StatementEquityComponents

us-gaap:SharesPaidForTaxWithholdingForShareBasedCompensation

us-gaap:TreasuryStock


Shares
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value057000.06000.05000.06000.05000.089000.05000.06000.05000.06000.05000.06000.05000.0
Percentage of SharesPaidForTaxWithholdingForShareBasedCompensation0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation

us-gaap:CommonStock


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value250000.0942000.0880000.0724000.0226000.0216000.01270000.097000.080000.078000.017000.013000.038000.0155000.0
Percentage of StockIssuedDuringPeriodSharesShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value1.4628.5617.9166.9541.2221.519100.4350.150.2860.0270.00.0011.0220.7030.0562.220.1455.6472.540.2740.0010.0820.5740.4241.04.3880.4380.0010.0190.0930.069-0.1110.0260.280.6270.1770.334
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1.4628.567.9156.9531.2221.519100.4340.150.2860.0270.00.0011.022
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation100.0100.0100.0100.0100.0100.0100.099.8100.0100.0100.00.0100.0100.0

us-gaap:CommonStock


Stock
Period End2021-06-302021-03-312020-12-312020-09-302019-12-312019-09-302019-06-302019-03-31
Value0.00.0010.0010.0010.0010.0010.00.0
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation0.00.00.00.00.00.20.00.0

us-gaap:Parent


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value1.4628.5617.9166.9541.2221.519100.4350.150.2860.0270.00.0011.0220.7030.0562.220.1455.6472.540.2740.0010.0820.5740.4241.04.3880.4380.0010.0190.0930.069-0.1110.0260.280.6270.1770.334
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

amkr:Capitalexpenditurespayable

amkr:Capitalexpenditurespayable


Capitalexpenditurespayable
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value46027318132825910777157134123255253238223294289231209144179174199242221210111127104
Percentage of Capitalexpenditurespayable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

amkr:CashandCashEquivalentsandDebtSecuritiesAvailableforsaleFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel

amkr:CashandCashEquivalentsandDebtSecuritiesAvailableforsaleFairValueDisclosure

us-gaap:FairValueInputsLevel1


Cashand
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value184250161233354328
Percentage of CashandCashEquivalentsandDebtSecuritiesAvailableforsaleFairValueDisclosure100.0100.0100.0100.0100.0100.0

us-gaap:FairValueInputsLevel2


Cashand
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value15114311331028881
Percentage of CashandCashEquivalentsandDebtSecuritiesAvailableforsaleFairValueDisclosure82.057.170.3132.681.524.8

amkr:ConversionOfSeverancePlanObligationToDefinedContributionLiability us-gaap:RetirementPlanSponsorLocation, us-gaap:SubsequentEventType

amkr:ConversionOfSeverancePlanObligationToDefinedContributionLiability

country:KR, us-gaap:SubsequentEvent


Conversion
Period End2020-10-31
Value30
Percentage of ConversionOfSeverancePlanObligationToDefinedContributionLiability100.0

amkr:DeferredTaxAssetsOperatingLeaseLiabilities

amkr:DeferredTaxAssetsOperatingLeaseLiabilities


Deferred
Period End2020-12-312019-12-31
Value2018
Percentage of DeferredTaxAssetsOperatingLeaseLiabilities100.0100.0

amkr:DeferredTaxAssetsOtherDeferredLiabilities

amkr:DeferredTaxAssetsOtherDeferredLiabilities


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value333031320.0
Percentage of DeferredTaxAssetsOtherDeferredLiabilities100.0100.0100.0100.00.0

amkr:DeferredTaxAssetsTaxDeferredExpenseReservesandAccrualsInterestExpense

amkr:DeferredTaxAssetsTaxDeferredExpenseReservesandAccrualsInterestExpense


Deferred
Period End2020-12-312019-12-312018-12-312017-12-31
Value10125.4150.0
Percentage of DeferredTaxAssetsTaxDeferredExpenseReservesandAccrualsInterestExpense100.0100.0100.00.0

amkr:DeferredTaxLiabilitiesOperatingLeaseRightofuseAsset

amkr:DeferredTaxLiabilitiesOperatingLeaseRightofuseAsset


Deferred
Period End2020-12-312019-12-31
Value1917
Percentage of DeferredTaxLiabilitiesOperatingLeaseRightofuseAsset100.0100.0

amkr:DeferredTaxLiabilitiesUnbilledReceivables

amkr:DeferredTaxLiabilitiesUnbilledReceivables


Deferred
Period End2020-12-312019-12-312018-12-312017-12-31
Value2031000.03580000.09515000.08217000.0
Percentage of DeferredTaxLiabilitiesUnbilledReceivables100.0100.0100.0100.0

amkr:FinanceLeaseRightofUseAssetBeforeAccumulatedAmortization

amkr:FinanceLeaseRightofUseAssetBeforeAccumulatedAmortization


Finance
Period End2020-09-302020-06-302020-03-312019-12-31
Value32343434
Percentage of FinanceLeaseRightofUseAssetBeforeAccumulatedAmortization100.0100.0100.0100.0

amkr:LesseeLeaseNotYetCommencedLiability

amkr:LesseeLeaseNotYetCommencedLiability


Lessee
Period End2021-06-302020-12-31
Value458.0
Percentage of LesseeLeaseNotYetCommencedLiability100.0100.0

amkr:PaymentsRemainingWithLocalPensionFund amkr:OtherDeferredCashCompensation

amkr:PaymentsRemainingWithLocalPensionFund

amkr:KoreanSeverancePlan


Payments
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
Value158000.0161000.0172000.0185000.0182000.0192000.0219000.0241000.0-249000.0239000.0257000.0260000.0
Percentage of PaymentsRemainingWithLocalPensionFund100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

amkr:PropertyPlantandEquipmentandFinanceLeaseRightofUseAssetAccumulatedDepreciationandAmortization

amkr:PropertyPlantandEquipmentandFinanceLeaseRightofUseAssetAccumulatedDepreciationandAmortization


Property
Period End2020-09-302020-06-302020-03-312019-12-31
Value5256516850644977
Percentage of PropertyPlantandEquipmentandFinanceLeaseRightofUseAssetAccumulatedDepreciationandAmortization100.0100.0100.0100.0

amkr:PropertyPlantandEquipmentandFinanceLeaseRightofUseAssetafterAccumulatedDepreciationandAmortization

amkr:PropertyPlantandEquipmentandFinanceLeaseRightofUseAssetafterAccumulatedDepreciationandAmortization


Property
Period End2020-09-302020-06-302020-03-312019-12-31
Value2560247123672404
Percentage of PropertyPlantandEquipmentandFinanceLeaseRightofUseAssetafterAccumulatedDepreciationandAmortization100.0100.0100.0100.0

amkr:PropertyPlantandEquipmentandFinanceLeaseRightofUseAssetbeforeAccumulatedDepreciationandAmortization

amkr:PropertyPlantandEquipmentandFinanceLeaseRightofUseAssetbeforeAccumulatedDepreciationandAmortization


Property
Period End2020-09-302020-06-302020-03-312019-12-31
Value7816764074327381
Percentage of PropertyPlantandEquipmentandFinanceLeaseRightofUseAssetbeforeAccumulatedDepreciationandAmortization100.0100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent


Allowance
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312013-12-312012-12-312011-12-312010-12-31
Value863000.01314000.0677000.06946000.09902000.03158000.076000.015000.0272000.0624000.0
Percentage of AllowanceForDoubtfulAccountsReceivableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value17000.027000.048000.0279000.0487000.0188000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax us-gaap:CashAndCashEquivalents

us-gaap:CashEquivalents


Available
Period End2020-09-302020-06-302020-03-31
Value27000.055000.016000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax9.711.38.5

us-gaap:CorporateBondSecurities


Available
Period End2020-09-302020-06-30
Value27000.055000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax9.711.3

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax us-gaap:FinancialInstrument

us-gaap:AssetBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value5000.014000.018000.032000.062000.019000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax29.451.937.511.512.710.1

us-gaap:CorporateBondSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value1000.01000.016000.0180000.0332000.0111000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax5.93.733.364.568.259.0

us-gaap:MunicipalBonds


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value10000.08000.08000.08000.013000.07000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax58.829.616.72.92.73.7

us-gaap:ShortTermInvestments


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value17000.027000.048000.0252000.0432000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax100.0100.0100.090.388.7

us-gaap:USGovernmentAgenciesDebtSecurities


Available
Period End2020-12-312020-09-302020-06-302020-03-31
Value3000.017000.015000.012000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax6.26.13.16.4

us-gaap:USTreasurySecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value1000.04000.03000.015000.010000.023000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax5.914.86.25.42.112.2

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value50000.042000.023000.043000.047000.059000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax us-gaap:CashAndCashEquivalents

us-gaap:CashEquivalents


Available
Period End2021-06-302021-03-312020-09-302020-06-302020-03-31
Value2000.05000.02000.03000.011000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax4.011.94.76.418.6

us-gaap:CorporateBondSecurities


Available
Period End2021-06-302021-03-312020-09-302020-06-30
Value2000.05000.02000.03000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax4.011.94.76.4

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax us-gaap:FinancialInstrument

us-gaap:AssetBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value4000.07000.09000.07000.09000.05000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax8.016.739.116.319.18.5

us-gaap:CorporateBondSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value40000.027000.012000.031000.027000.042000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax80.064.352.272.157.471.2

us-gaap:MunicipalBonds


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value3000.03000.02000.01000.06000.00
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax6.07.18.72.312.80.0

us-gaap:ShortTermInvestments


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value48000.037000.023000.041000.044000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax96.088.1100.095.393.6

us-gaap:USGovernmentAgenciesDebtSecurities


Available
Period End2020-09-302020-06-302020-03-31
Value2000.02000.01000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax4.74.31.7

us-gaap:USTreasurySecurities


Available
Period End2021-06-302020-06-302020-03-31
Value1000.000
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax2.00.00.0

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value336394275543642410
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis us-gaap:CashAndCashEquivalents

us-gaap:AssetBackedSecurities


Available
Period End2021-06-302020-06-30
Value0.2471.283
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis0.10.2

us-gaap:CashEquivalents


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value180235146192336351
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis53.659.753.235.452.485.8

us-gaap:CertificatesOfDeposit


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value1.8040.9010.9763.3032.02
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis0.50.20.40.60.3

us-gaap:CommercialPaper


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value13115.2938.012
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis4.12.91.91.52.0

us-gaap:CorporateBondSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value9.2388.9641.7441313
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis2.72.30.62.52.2

us-gaap:MoneyMarketFunds


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value152211138161293
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis45.253.750.129.845.7

us-gaap:MortgageBackedSecurities


Available
Period End2020-09-30
Value0.972
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis0.2

us-gaap:MunicipalBonds


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value3.2751.7770.44.5577.178
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis1.00.50.10.81.1

us-gaap:USTreasurySecurities


Available
Period End2021-03-312020-06-30
Value0.255.7
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis0.10.9

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis us-gaap:FinancialInstrument

us-gaap:AssetBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value21161932426.064
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis6.54.26.95.96.61.5

us-gaap:CertificatesOfDeposit


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value15105.0461412
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis4.72.61.82.62.0

us-gaap:CommercialPaper


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value19241538431.986
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis5.66.15.57.16.70.5

us-gaap:CorporateBondSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value57595015211425
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis17.015.218.428.117.96.2

us-gaap:MortgageBackedSecurities


Available
Period End2020-09-30
Value1.041
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis0.2

us-gaap:MunicipalBonds


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value26181212162.762
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis7.94.74.62.22.50.7

us-gaap:ShortTermInvestments


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value156159129351305
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis46.440.346.864.647.6

us-gaap:USGovernmentAgenciesDebtSecurities


Available
Period End2021-03-312020-12-312020-09-302020-06-302020-03-31
Value1.5858.41545357.482
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis0.43.18.45.51.8

us-gaap:USTreasurySecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value152717544013
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis4.57.16.410.06.23.4

us-gaap:VariableRateDemandObligation


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value0.750.30.30.40.40.557
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis0.20.10.10.10.10.1

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost


Available
Period End2021-06-302021-03-312020-12-312020-09-30
Value798000.03450000.01444000.02198000.0
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue


Available
Period End2021-06-302021-03-312020-12-312020-09-30
Value798000.03447000.01446000.02200000.0
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost


Available
Period End2021-06-302021-03-312020-12-312020-09-30
Value33111427
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue


Available
Period End2021-06-302021-03-312020-12-312020-09-30
Value33111427
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost


Available
Period End2021-06-30
Value1502000.0
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue


Available
Period End2021-06-30
Value1502000.0
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost


Available
Period End2021-06-302021-03-312020-12-312020-09-30
Value300379259514
Percentage of AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue


Available
Period End2021-06-302021-03-312020-12-312020-09-30
Value300379259514
Percentage of AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtSecurities

us-gaap:AvailableForSaleSecuritiesDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value336394275544642410
Percentage of AvailableForSaleSecuritiesDebtSecurities100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtSecurities us-gaap:CashAndCashEquivalents

us-gaap:AssetBackedSecurities


Available
Period End2021-06-302020-06-30
Value0.2471.283
Percentage of AvailableForSaleSecuritiesDebtSecurities0.10.2

us-gaap:CashEquivalents


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value180235146192336351
Percentage of AvailableForSaleSecuritiesDebtSecurities53.659.753.235.452.485.8

us-gaap:CertificatesOfDeposit


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value1.8040.9010.9763.3032.02
Percentage of AvailableForSaleSecuritiesDebtSecurities0.50.20.40.60.3

us-gaap:CommercialPaper


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value13115.2938.012
Percentage of AvailableForSaleSecuritiesDebtSecurities4.12.91.91.52.0

us-gaap:CorporateBondSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value9.2368.9591.7441313
Percentage of AvailableForSaleSecuritiesDebtSecurities2.72.30.62.62.2

us-gaap:MoneyMarketFunds


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value152211138161293
Percentage of AvailableForSaleSecuritiesDebtSecurities45.253.750.129.745.6

us-gaap:MortgageBackedSecurities


Available
Period End2020-09-30
Value0.972
Percentage of AvailableForSaleSecuritiesDebtSecurities0.2

us-gaap:MunicipalBonds


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value3.2751.7770.44.5577.178
Percentage of AvailableForSaleSecuritiesDebtSecurities1.00.50.10.81.1

us-gaap:USTreasurySecurities


Available
Period End2021-03-312020-06-30
Value0.255.7
Percentage of AvailableForSaleSecuritiesDebtSecurities0.10.9

us-gaap:AvailableForSaleSecuritiesDebtSecurities us-gaap:CashAndCashEquivalents, us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:AssetBackedSecurities, us-gaap:FairValueInputsLevel2


Available
Period End2021-06-302020-06-30
Value0.2471.283
Percentage of AvailableForSaleSecuritiesDebtSecurities0.10.2

us-gaap:CashEquivalents, us-gaap:FairValueInputsLevel1


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value154212139165301
Percentage of AvailableForSaleSecuritiesDebtSecurities45.854.050.530.346.8

us-gaap:CashEquivalents, us-gaap:FairValueInputsLevel2


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value26227.4372735
Percentage of AvailableForSaleSecuritiesDebtSecurities7.85.72.75.05.5

us-gaap:CertificatesOfDeposit, us-gaap:FairValueInputsLevel1


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value1.8040.9010.9763.3032.02
Percentage of AvailableForSaleSecuritiesDebtSecurities0.50.20.40.60.3

us-gaap:CommercialPaper, us-gaap:FairValueInputsLevel2


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value13115.2938.012
Percentage of AvailableForSaleSecuritiesDebtSecurities4.12.91.91.52.0

us-gaap:CorporateBondSecurities, us-gaap:FairValueInputsLevel2


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value9.2368.9591.7441313
Percentage of AvailableForSaleSecuritiesDebtSecurities2.72.30.62.62.2

us-gaap:MoneyMarketFunds, us-gaap:FairValueInputsLevel1


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value152211138161293
Percentage of AvailableForSaleSecuritiesDebtSecurities45.253.750.129.745.6

us-gaap:MortgageBackedSecurities, us-gaap:FairValueInputsLevel2


Available
Period End2020-09-30
Value0.972
Percentage of AvailableForSaleSecuritiesDebtSecurities0.2

us-gaap:MunicipalBonds, us-gaap:FairValueInputsLevel2


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value3.2751.7770.44.5577.178
Percentage of AvailableForSaleSecuritiesDebtSecurities1.00.50.10.81.1

us-gaap:AvailableForSaleSecuritiesDebtSecurities us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:USTreasurySecurities


Available
Period End2020-12-312019-12-31
Value4.76.348
Percentage of AvailableForSaleSecuritiesDebtSecurities1.70.0

us-gaap:AvailableForSaleSecuritiesDebtSecurities us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument

us-gaap:FairValueInputsLevel1, us-gaap:CertificatesOfDeposit


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value15105.0461412
Percentage of AvailableForSaleSecuritiesDebtSecurities4.72.61.82.62.0

us-gaap:FairValueInputsLevel1, us-gaap:ShortTermInvestments


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value3038226853
Percentage of AvailableForSaleSecuritiesDebtSecurities9.29.78.212.68.2

us-gaap:FairValueInputsLevel1, us-gaap:USTreasurySecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value152717544014
Percentage of AvailableForSaleSecuritiesDebtSecurities4.57.16.410.06.23.4

us-gaap:FairValueInputsLevel2, us-gaap:AssetBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value21161932426.078
Percentage of AvailableForSaleSecuritiesDebtSecurities6.54.26.95.96.61.5

us-gaap:FairValueInputsLevel2, us-gaap:CommercialPaper


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value19241538431.986
Percentage of AvailableForSaleSecuritiesDebtSecurities5.66.15.57.16.70.5

us-gaap:FairValueInputsLevel2, us-gaap:CorporateBondSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value57595015211525
Percentage of AvailableForSaleSecuritiesDebtSecurities17.015.218.428.117.96.2

us-gaap:FairValueInputsLevel2, us-gaap:MortgageBackedSecurities


Available
Period End2020-09-30
Value1.041
Percentage of AvailableForSaleSecuritiesDebtSecurities0.2

us-gaap:FairValueInputsLevel2, us-gaap:MunicipalBonds


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value26181212162.769
Percentage of AvailableForSaleSecuritiesDebtSecurities7.94.74.62.22.50.7

us-gaap:FairValueInputsLevel2, us-gaap:ShortTermInvestments


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value125121106282253
Percentage of AvailableForSaleSecuritiesDebtSecurities37.230.738.652.039.4

us-gaap:FairValueInputsLevel2, us-gaap:USGovernmentAgenciesDebtSecurities


Available
Period End2021-03-312020-12-312020-09-302020-06-302020-03-31
Value1.5858.41845357.493
Percentage of AvailableForSaleSecuritiesDebtSecurities0.43.18.45.51.8

us-gaap:FairValueInputsLevel2, us-gaap:VariableRateDemandObligation


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value0.750.30.30.40.40.557
Percentage of AvailableForSaleSecuritiesDebtSecurities0.20.10.10.10.10.1

us-gaap:AvailableForSaleSecuritiesDebtSecurities us-gaap:FinancialInstrument

us-gaap:AssetBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value21161932426.078
Percentage of AvailableForSaleSecuritiesDebtSecurities6.54.26.95.96.61.5

us-gaap:CertificatesOfDeposit


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value15105.0461412
Percentage of AvailableForSaleSecuritiesDebtSecurities4.72.61.82.62.0

us-gaap:CommercialPaper


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value19241538431.986
Percentage of AvailableForSaleSecuritiesDebtSecurities5.66.15.57.16.70.5

us-gaap:CorporateBondSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value57595015211525
Percentage of AvailableForSaleSecuritiesDebtSecurities17.015.218.428.117.96.2

us-gaap:MortgageBackedSecurities


Available
Period End2020-09-30
Value1.041
Percentage of AvailableForSaleSecuritiesDebtSecurities0.2

us-gaap:MunicipalBonds


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value26181212162.769
Percentage of AvailableForSaleSecuritiesDebtSecurities7.94.74.62.22.50.7

us-gaap:ShortTermInvestments


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value156159129351306
Percentage of AvailableForSaleSecuritiesDebtSecurities46.440.346.864.647.6

us-gaap:USGovernmentAgenciesDebtSecurities


Available
Period End2021-03-312020-12-312020-09-302020-06-302020-03-31
Value1.5858.41845357.493
Percentage of AvailableForSaleSecuritiesDebtSecurities0.43.18.45.51.8

us-gaap:USTreasurySecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value152717544014
Percentage of AvailableForSaleSecuritiesDebtSecurities4.57.16.410.06.23.4

us-gaap:VariableRateDemandObligation


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value0.750.30.30.40.40.557
Percentage of AvailableForSaleSecuritiesDebtSecurities0.20.10.10.10.10.1

us-gaap:ContractWithCustomerLiability

us-gaap:ContractWithCustomerLiability


Contract
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value11353515017
Percentage of ContractWithCustomerLiability100.0100.0100.0100.0100.0

us-gaap:DebtInstrumentCarryingAmount

us-gaap:DebtInstrumentCarryingAmount


Debt
Period End2020-12-312019-12-312018-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value116414601334153015301646164616441545
Percentage of DebtInstrumentCarryingAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrumentCarryingAmount us-gaap:DebtInstrument

us-gaap:OtherDebtSecurities


Debt
Period End2020-12-31
Value2.039
Percentage of DebtInstrumentCarryingAmount0.2

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

amkr:SeniorNotesDueSeptember2027, us-gaap:SeniorNotes


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value5255255255255255255255255250.0
Percentage of DebtInstrumentCarryingAmount0.00.045.10.00.00.036.00.00.00.0

amkr:Shorttermtermloanvariablerate, amkr:SubsidiaryTermLoans


Debt
Period End2021-03-312020-12-312020-09-30
Value0.8182.0393.25
Percentage of DebtInstrumentCarryingAmount0.00.20.0

us-gaap:DebtInstrumentCarryingAmount us-gaap:LongtermDebtType

amkr:SubsidiaryTermLoans


Debt
Period End2020-12-31
Value2.039
Percentage of DebtInstrumentCarryingAmount0.2

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

country:CN, amkr:TermLoanLIBORPlus110DueMarch2024, amkr:SubsidiaryTermLoans


Debt
Period End2021-06-302021-03-31
Value4950
Percentage of DebtInstrumentCarryingAmount0.00.0

country:CN, amkr:TermLoanLIBORplus1.40DueMarch2022, amkr:SubsidiaryTermLoans


Debt
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value18181819190.0
Percentage of DebtInstrumentCarryingAmount1.60.00.00.01.30.0

country:CN, amkr:TermLoanLIBORplus1.60DueMarch2022, amkr:SubsidiaryTermLoans


Debt
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value28282829290.0
Percentage of DebtInstrumentCarryingAmount2.40.00.00.02.00.0

country:JP, amkr:Shorttermtermloanvariablerate, amkr:SubsidiaryTermLoans


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value1.8183.6136.663164.762127.07117128.232
Percentage of DebtInstrumentCarryingAmount0.00.00.60.00.00.00.50.00.00.6

country:JP, amkr:TermLoanDueJune2022, amkr:SubsidiaryTermLoans


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value9.0111416182023252731
Percentage of DebtInstrumentCarryingAmount0.00.01.20.00.00.01.60.00.02.4

country:JP, amkr:TermLoanFixedRateAt120DueDecember2025, amkr:SubsidiaryTermLoans


Debt
Period End2021-06-302021-03-312020-12-31
Value8893105
Percentage of DebtInstrumentCarryingAmount0.00.09.1

country:JP, amkr:TermLoanFixedRateat0.60DueJuly2022, amkr:SubsidiaryTermLoans


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value2.252.713.393.7924.1694.6495.0645.5516.0276.838
Percentage of DebtInstrumentCarryingAmount0.00.00.30.00.00.00.30.00.00.5

country:JP, amkr:TermLoanFixedRateat1.30DueJuly2023, amkr:SubsidiaryTermLoans


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value105117138147156169179192204225
Percentage of DebtInstrumentCarryingAmount0.00.011.90.00.00.012.30.00.016.9

country:JP, amkr:TermLoanFixedRateat1.35DueDecember2024, amkr:SubsidiaryTermLoans


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value1791932202292372512620.0
Percentage of DebtInstrumentCarryingAmount0.00.019.00.00.00.018.00.0

country:KR, amkr:TermLoanDueApril2023, amkr:SubsidiaryTermLoans


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value4949511281240.0
Percentage of DebtInstrumentCarryingAmount0.00.04.40.00.00.0

country:KR, amkr:TermLoanDueDecember2023, amkr:SubsidiaryTermLoans


Debt
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value208080200200200200
Percentage of DebtInstrumentCarryingAmount0.00.00.013.70.00.015.0

country:KR, amkr:TermLoanDueDecember2028, amkr:SubsidiaryTermLoans


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value50505090909066666624
Percentage of DebtInstrumentCarryingAmount0.00.04.30.00.00.04.50.00.01.8

country:KR, amkr:TermLoanDueSeptember2022, amkr:SubsidiaryTermLoans


Debt
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value1001406060600.0
Percentage of DebtInstrumentCarryingAmount0.00.00.04.10.00.0

us-gaap:DebtInstrumentFaceAmount us-gaap:StatementGeographical, us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType

us-gaap:DebtInstrumentFaceAmount

country:KR, amkr:TermLoanDueApril2024, amkr:SubsidiaryTermLoans, us-gaap:SubsequentEvent


Debt
Period End2021-04-30
Value72
Percentage of DebtInstrumentFaceAmount100.0

us-gaap:DebtInstrumentFaceAmount us-gaap:StatementGeographical, us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:VariableRate

country:CN, amkr:TermLoanOneLIBORPlus110DueMarch2024, amkr:SubsidiaryTermLoans, us-gaap:LondonInterbankOfferedRateLIBOR


Debt
Period End2021-03-31
Value20
Percentage of DebtInstrumentFaceAmount0.0

country:CN, amkr:TermLoanTwoLIBORPlus110DueMarch2024, amkr:SubsidiaryTermLoans, us-gaap:LondonInterbankOfferedRateLIBOR


Debt
Period End2021-03-31
Value30
Percentage of DebtInstrumentFaceAmount0.0

us-gaap:DebtInstrumentFaceAmount us-gaap:StatementGeographical, us-gaap:DebtInstrument, us-gaap:VariableRate

country:CN, amkr:TermLoanOneLIBORPlus110DueMarch2024, us-gaap:LondonInterbankOfferedRateLIBOR


Debt
Period End2021-03-31
Value20
Percentage of DebtInstrumentFaceAmount0.0

country:CN, amkr:TermLoanTwoLIBORPlus110DueMarch2024, us-gaap:LondonInterbankOfferedRateLIBOR


Debt
Period End2021-03-31
Value30
Percentage of DebtInstrumentFaceAmount0.0

us-gaap:DebtInstrumentFairValue us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis, us-gaap:LongtermDebtType

us-gaap:DebtInstrumentFairValue

us-gaap:FairValueInputsLevel1, us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:SeniorNotes


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value5665675705645634885765735221067526535736739745745947949954
Percentage of DebtInstrumentFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueInputsLevel2, us-gaap:EstimateOfFairValueFairValueDisclosure, amkr:SubsidiaryTermLoanAndRevolvingCreditFacility


Debt
Period End2021-06-302020-12-31
Value540647
Percentage of DebtInstrumentFairValue95.4113.5

us-gaap:FairValueInputsLevel2, us-gaap:EstimateOfFairValueFairValueDisclosure, amkr:SubsidiaryTermLoansandRevolvingCreditFacilities


Debt
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value5756478121034980940784795815803838603621639638646599551
Percentage of DebtInstrumentFairValue101.5113.5143.8183.6200.7163.1136.8152.276.4152.8156.581.984.085.885.668.263.157.8

us-gaap:DebtInstrumentFairValue us-gaap:FairValueByMeasurementBasis

us-gaap:CarryingReportedAmountFairValueDisclosure


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value1051108711541319154515131450129713081853133213651329134513641361156815221474157916361534159514401490152515301652
Percentage of DebtInstrumentFairValue185.5191.6202.4233.5274.3309.6251.4226.3250.4173.7253.2255.0180.5181.9182.9182.5165.5160.3154.50.00.00.00.00.00.00.00.00.0

us-gaap:EstimateOfFairValueFairValueDisclosure


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value1107114312171376159714691517135813171882132913731340136013851384159315491506
Percentage of DebtInstrumentFairValue195.4201.5213.5243.8283.6300.7263.1236.8252.2176.4252.8256.5181.9184.0185.8185.6168.2163.1157.8

us-gaap:DebtInstrumentFairValue us-gaap:FairValueByMeasurementBasis, us-gaap:LongtermDebtType

us-gaap:CarryingReportedAmountFairValueDisclosure, amkr:SubsidiaryTermLoanAndRevolvingCreditFacility


Debt
Period End2021-06-302020-12-31
Value531634
Percentage of DebtInstrumentFairValue93.7111.3

us-gaap:CarryingReportedAmountFairValueDisclosure, amkr:SubsidiaryTermLoansandRevolvingCreditFacilities


Debt
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value5676347991029993931778789810807840605621640637645600552657714613665255
Percentage of DebtInstrumentFairValue100.0111.3141.5182.8203.3161.4135.8151.175.9153.4157.082.284.085.985.568.263.257.90.00.00.00.00.0

us-gaap:CarryingReportedAmountFairValueDisclosure, us-gaap:SeniorNotes


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value5205195195195155195195195181043524524724723723723922922922921921921930930930127512751276
Percentage of DebtInstrumentFairValue91.891.691.192.091.5106.390.090.599.397.899.898.098.397.997.097.097.497.196.60.00.00.00.00.00.00.00.00.0

us-gaap:DebtInstrumentInterestRateEffectivePercentage us-gaap:StatementGeographical, us-gaap:CreditFacility, us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:DebtInstrumentInterestRateEffectivePercentage

country:JP, us-gaap:RevolvingCreditFacility, amkr:Shorttermtermloanvariablerate, us-gaap:LineOfCredit


Debt
Period End2020-12-312019-12-312018-12-312017-12-31
Value0.270.00220.00240.0022
Percentage of DebtInstrumentInterestRateEffectivePercentage100.0100.0100.0100.0

us-gaap:DebtInstrumentInterestRateEffectivePercentage us-gaap:StatementGeographical, us-gaap:DebtInstrument, us-gaap:LongtermDebtType

country:CN, amkr:TermLoanLIBORplus1.40DueMarch2022, amkr:SubsidiaryTermLoans


Debt
Period End2020-12-312019-12-312018-12-31
Value1.630.0330
Percentage of DebtInstrumentInterestRateEffectivePercentage603.71500.00.0

country:CN, amkr:TermLoanLIBORplus1.60DueMarch2022, amkr:SubsidiaryTermLoans


Debt
Period End2020-12-312019-12-312018-12-31
Value1.830.03530
Percentage of DebtInstrumentInterestRateEffectivePercentage677.81604.50.0

country:KR, amkr:TermLoanDueApril2023, amkr:SubsidiaryTermLoans


Debt
Period End2020-12-31
Value2.4
Percentage of DebtInstrumentInterestRateEffectivePercentage888.9

us-gaap:DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet

us-gaap:DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value-8614000.0-9126000.0-9956000.0-9092000.0-9403000.0-9811000.0-10117000.07475000.0-7721000.0-8082000.0-1818000.0-1880000.0-890000.0-995000.0-1104000.0-1214000.0-2454000.0-2641000.0-2831000.0
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrumentUnusedBorrowingCapacityAmount us-gaap:StatementGeographical, us-gaap:CreditFacility, us-gaap:LongtermDebtType

us-gaap:DebtInstrumentUnusedBorrowingCapacityAmount

country:KR, amkr:CreditFacilityApplicableBankRatePlus151, us-gaap:LineOfCredit


Debt
Period End2020-09-30
Value30
Percentage of DebtInstrumentUnusedBorrowingCapacityAmount100.0

country:KR, us-gaap:RevolvingCreditFacility, us-gaap:LineOfCredit


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value303030303015
Percentage of DebtInstrumentUnusedBorrowingCapacityAmount0.00.00.0100.00.00.0

us-gaap:DebtInstrumentUnusedBorrowingCapacityAmount us-gaap:StatementGeographical, us-gaap:DebtInstrument, us-gaap:LongtermDebtType

country:JP, amkr:Shorttermtermloanvariablerate, amkr:SubsidiaryTermLoans


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value9.09.04.84.76.56.56.06.04.0
Percentage of DebtInstrumentUnusedBorrowingCapacityAmount0.00.00.015.70.00.00.00.00.0

country:KR, amkr:TermLoanDueMay2021, amkr:SubsidiaryTermLoans


Debt
Period End2021-03-312020-12-312020-09-30
Value536000060000
Percentage of DebtInstrumentUnusedBorrowingCapacityAmount0.00.0200000.0

country:KR, amkr:TermLoanFixedRateAt185DueApril2024, amkr:SubsidiaryTermLoans


Debt
Period End2021-06-30
Value80000
Percentage of DebtInstrumentUnusedBorrowingCapacityAmount0.0

us-gaap:DebtSecuritiesAvailableForSaleAmortizedCostCurrent

us-gaap:DebtSecuritiesAvailableForSaleAmortizedCostCurrent


Debt
Period End2021-06-302021-03-312020-12-312020-09-30
Value160163133355
Percentage of DebtSecuritiesAvailableForSaleAmortizedCostCurrent100.0100.0100.0100.0

us-gaap:DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible

us-gaap:DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible


Decrease
Period End2020-12-31
Value7100000.0
Percentage of DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible100.0

us-gaap:DeferredCompensationCashbasedArrangementsLiabilityCurrentAndNoncurrent amkr:OtherDeferredCashCompensation

us-gaap:DeferredCompensationCashbasedArrangementsLiabilityCurrentAndNoncurrent

amkr:KoreanSeverancePlan


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value981271421531361431461451261068869132
Percentage of DeferredCompensationCashbasedArrangementsLiabilityCurrentAndNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxAssetsNet

us-gaap:DeferredIncomeTaxAssetsNet


Deferred
Period End2020-12-312019-12-312018-12-31
Value9590118
Percentage of DeferredIncomeTaxAssetsNet100.0100.0100.0

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredIncomeTaxLiabilities


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value7261432928413529232517
Percentage of DeferredIncomeTaxLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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
Value282288280228259275259266274282284
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
Value24251353111147120147155162163
Percentage of DeferredTaxAssetsOperatingLossCarryforwards100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsOther


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value1111141214161215191617
Percentage of DeferredTaxAssetsOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsPropertyPlantAndEquipment

us-gaap:DeferredTaxAssetsPropertyPlantAndEquipment


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value25273835212119140.283
Percentage of DeferredTaxAssetsPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxCreditCarryforwards

us-gaap:DeferredTaxAssetsTaxCreditCarryforwards


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value93981072341272427312022
Percentage of DeferredTaxAssetsTaxCreditCarryforwards100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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
Value5761686868627657464035
Percentage of DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsUnrealizedCurrencyLosses

us-gaap:DeferredTaxAssetsUnrealizedCurrencyLosses


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
Value5603000.02750000.01410000.01924000.0531000.0869000.04947000.03893000.03949000.05437000.06486000.0
Percentage of DeferredTaxAssetsUnrealizedCurrencyLosses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DeferredTaxLiabilitiesOther


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value4.5144.1255.8054.5665.8266.7132.8441.96713137.478
Percentage of DeferredTaxLiabilitiesOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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
Value28231415203127213.2634.5323.46
Percentage of DeferredTaxLiabilitiesPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesTaxDeferredIncome

us-gaap:DeferredTaxLiabilitiesTaxDeferredIncome


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
Value1111110.9392.6553.7165.0366.2956.8996.8996.899
Percentage of DeferredTaxLiabilitiesTaxDeferredIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesUnrealizedCurrencyTransactionGains

us-gaap:DeferredTaxLiabilitiesUnrealizedCurrencyTransactionGains


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value5620000.01195000.01695000.08383000.0990000.0
Percentage of DeferredTaxLiabilitiesUnrealizedCurrencyTransactionGains100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanAccumulatedBenefitObligation

us-gaap:DefinedBenefitPlanAccumulatedBenefitObligation


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
Value16415413211394774455545248
Percentage of DefinedBenefitPlanAccumulatedBenefitObligation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanAmountsRecognizedInBalanceSheet

us-gaap:DefinedBenefitPlanAmountsRecognizedInBalanceSheet


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312011-12-312010-12-31
Value-67298000.0-62290000.0-52342000.0-42741000.0-39945000.0-30096000.0-17941000.0
Percentage of DefinedBenefitPlanAmountsRecognizedInBalanceSheet100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent

us-gaap:DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312011-12-312010-12-31
Value4856000.0498000.02740000.0656000.0003092000.0
Percentage of DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent100.0100.0100.0100.00.00.0100.0

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate


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
Value2.30.0250.0310.0320.0310.0330.0420.0390.040.0420.0520.064
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease


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
Value3.70.0370.0360.0380.0380.0390.0470.0410.0410.0450.0460.059
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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
Value222207175158131109748180787258
Percentage of DefinedBenefitPlanBenefitObligation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter


Defined
Period End2020-12-31
Value125
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter100.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths


Defined
Period End2020-12-31
Value13
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths100.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive


Defined
Period End2020-12-31
Value18
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive100.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour


Defined
Period End2020-12-31
Value14
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour100.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree


Defined
Period End2020-12-31
Value13
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree100.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo


Defined
Period End2020-12-31
Value11
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo100.0

us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear

us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear


Defined
Period End2020-12-31
Value23
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
Value1551451231159176545058485440
Percentage of DefinedBenefitPlanFairValueOfPlanAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanFairValueOfPlanAssets us-gaap:DefinedBenefitPlanByPlanAssetCategories

amkr:ForeignGuaranteedInvestmentContract


Defined
Period End2020-12-312019-12-31
Value3433
Percentage of DefinedBenefitPlanFairValueOfPlanAssets22.123.4

amkr:GovernmentBonds


Defined
Period End2020-12-312019-12-31
Value6.5713.106
Percentage of DefinedBenefitPlanFairValueOfPlanAssets4.22.1

amkr:MutualAndCommingledDebtFunds


Defined
Period End2020-12-312019-12-31
Value3026
Percentage of DefinedBenefitPlanFairValueOfPlanAssets20.018.4

amkr:MutualAndCommingledEquityFunds


Defined
Period End2020-12-312019-12-31
Value4637
Percentage of DefinedBenefitPlanFairValueOfPlanAssets29.926.0

amkr:OtherInvestmentType


Defined
Period End2020-12-312019-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value-1.2050.9490.2550.1020.4970.50.46
Percentage of DefinedBenefitPlanFairValueOfPlanAssets-0.80.70.50.20.91.00.8

amkr:TaiwanRetirementFund


Defined
Period End2020-12-312019-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value12118.6328.848.727.9917.83
Percentage of DefinedBenefitPlanFairValueOfPlanAssets8.27.815.817.615.016.414.3

amkr:TreasuryNotes


Defined
Period End2020-12-312019-12-31
Value8.0693.516
Percentage of DefinedBenefitPlanFairValueOfPlanAssets5.22.4

us-gaap:DefinedBenefitPlanCashAndCashEquivalents


Defined
Period End2020-12-312019-12-31
Value1.2193.572
Percentage of DefinedBenefitPlanFairValueOfPlanAssets0.82.5

us-gaap:EquitySecurities


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
Value16245055343022209.444.75710
Percentage of DefinedBenefitPlanFairValueOfPlanAssets10.416.840.948.337.339.741.740.116.29.719.2

us-gaap:DefinedBenefitPlanFairValueOfPlanAssets us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:FairValueByFairValueHierarchyLevel

amkr:ForeignGuaranteedInvestmentContract, us-gaap:FairValueInputsLevel2


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value343318142.445
Percentage of DefinedBenefitPlanFairValueOfPlanAssets22.123.414.712.22.7

amkr:GovernmentBonds, us-gaap:FairValueInputsLevel1


Defined
Period End2020-12-312019-12-31
Value6.5713.106
Percentage of DefinedBenefitPlanFairValueOfPlanAssets4.22.1

amkr:MutualAndCommingledDebtFunds, us-gaap:FairValueInputsLevel1


Defined
Period End2020-12-312019-12-31
Value1311
Percentage of DefinedBenefitPlanFairValueOfPlanAssets8.87.9

amkr:MutualAndCommingledDebtFunds, us-gaap:FairValueInputsLevel2


Defined
Period End2020-12-312019-12-31
Value1715
Percentage of DefinedBenefitPlanFairValueOfPlanAssets11.110.5

amkr:MutualAndCommingledEquityFunds, us-gaap:FairValueInputsLevel1


Defined
Period End2020-12-312019-12-31
Value3830
Percentage of DefinedBenefitPlanFairValueOfPlanAssets25.121.2

amkr:MutualAndCommingledEquityFunds, us-gaap:FairValueInputsLevel2


Defined
Period End2020-12-312019-12-31
Value7.536.902
Percentage of DefinedBenefitPlanFairValueOfPlanAssets4.94.8

amkr:OtherInvestmentType, us-gaap:FairValueInputsLevel1


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value-2.3650.0990.680.5840.00.00.00.3770.3460.183
Percentage of DefinedBenefitPlanFairValueOfPlanAssets-1.50.10.60.50.00.00.00.60.70.3

amkr:OtherInvestmentType, us-gaap:FairValueInputsLevel2


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
Value1.16-0.9860.5330.2390.1860.1290.2550.1020.120.1540.277
Percentage of DefinedBenefitPlanFairValueOfPlanAssets0.7-0.70.40.20.20.20.50.20.20.30.5

amkr:TaiwanRetirementFund, us-gaap:FairValueInputsLevel1


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
Value121110108.9728.6218.6328.848.727.9917.83
Percentage of DefinedBenefitPlanFairValueOfPlanAssets8.27.88.58.79.811.315.817.615.016.414.3

amkr:TreasuryNotes, us-gaap:FairValueInputsLevel1


Defined
Period End2020-12-312019-12-31
Value8.0693.516
Percentage of DefinedBenefitPlanFairValueOfPlanAssets5.22.4

us-gaap:DefinedBenefitPlanCashAndCashEquivalents, us-gaap:FairValueInputsLevel1


Defined
Period End2020-12-312019-12-312018-12-31
Value1.2193.6146.64
Percentage of DefinedBenefitPlanFairValueOfPlanAssets0.82.55.4

us-gaap:EquitySecurities, us-gaap:FairValueInputsLevel1


Defined
Period End2020-12-312019-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value162422209.444.75710
Percentage of DefinedBenefitPlanFairValueOfPlanAssets10.416.841.740.116.29.719.2

us-gaap:DefinedBenefitPlanFairValueOfPlanAssets us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel1


Defined
Period End2020-12-312019-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value94885148514348
Percentage of DefinedBenefitPlanFairValueOfPlanAssets61.260.894.395.688.789.088.4

us-gaap:FairValueInputsLevel2


Defined
Period End2020-12-312019-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value60563.0952.1896.5685.3466.331
Percentage of DefinedBenefitPlanFairValueOfPlanAssets38.839.25.74.411.311.011.6

us-gaap:DefinedBenefitPlanFundedStatusOfPlan

us-gaap:DefinedBenefitPlanFundedStatusOfPlan


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
Value-67298000.0-62290000.0-52342000.0-42741000.0-39945000.0-33653000.0-19238000.0-31268000.0-22382000.0-30096000.0-17941000.0
Percentage of DefinedBenefitPlanFundedStatusOfPlan100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsPlanAssets

us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsPlanAssets


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value681348076
Percentage of DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsPlanAssets100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation

us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value140197135119
Percentage of DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation100.0100.0100.0100.0

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
Value7671635349401124172218
Percentage of DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets

us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value2524201816130.00.00.00.00.0
Percentage of DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets100.0100.0100.0100.0100.0100.00.00.00.00.00.0

us-gaap:DerivativeAssetNotionalAmount us-gaap:Currency, us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeAssetNotionalAmount

currency:JPY, us-gaap:ForeignExchangeForward


Derivative
Period End2021-06-302021-03-312020-12-312019-12-312018-12-31
Value341369465391163
Percentage of DerivativeAssetNotionalAmount100.0100.0100.0100.0100.0

currency:KRW, us-gaap:ForeignExchangeForward


Derivative
Period End2021-06-302021-03-312020-12-312019-12-312018-12-31
Value209160161740.0
Percentage of DerivativeAssetNotionalAmount61.343.434.718.90.0

currency:PHP, us-gaap:ForeignExchangeForward


Derivative
Period End2021-06-302021-03-312020-12-31
Value109.18310
Percentage of DerivativeAssetNotionalAmount3.12.52.4

us-gaap:DerivativeAssetNotionalAmount us-gaap:DerivativeInstrumentRisk

us-gaap:ForeignExchangeForward


Derivative
Period End2021-06-302021-03-312020-12-312019-12-312018-12-31
Value561539637465163
Percentage of DerivativeAssetNotionalAmount164.4145.9137.1118.9100.0

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

us-gaap:DerivativeAssets

currency:JPY, us-gaap:AccountsPayableAndAccruedLiabilities, us-gaap:ForeignExchangeForward, us-gaap:FairValueInputsLevel2


Derivative
Period End2021-06-302021-03-31
Value-1355000.0-3923000.0
Percentage of DerivativeAssets100.0100.0

currency:JPY, us-gaap:OtherCurrentAssets, us-gaap:ForeignExchangeForward, us-gaap:FairValueInputsLevel2


Derivative
Period End2020-12-312019-12-312018-12-31
Value1279000.02225000.01565000.0
Percentage of DerivativeAssets0.00.00.0

currency:KRW, us-gaap:OtherCurrentAssets, us-gaap:ForeignExchangeForward, us-gaap:FairValueInputsLevel2


Derivative
Period End2021-06-302021-03-312020-12-312019-12-312018-12-31
Value599000.035000.0190000.086000.00
Percentage of DerivativeAssets-44.2-0.90.00.00.0

currency:PHP, us-gaap:AccountsPayableAndAccruedLiabilities, us-gaap:ForeignExchangeForward, us-gaap:FairValueInputsLevel2


Derivative
Period End2021-06-302021-03-312020-12-31
Value-50000.0-23000.0-7000.0
Percentage of DerivativeAssets3.70.60.0

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

us-gaap:ForeignExchangeForward, us-gaap:FairValueInputsLevel2


Derivative
Period End2021-06-302021-03-312020-12-312019-12-312018-12-31
Value-806000.0-3911000.01462000.02311000.01565000.0
Percentage of DerivativeAssets59.599.70.00.00.0

us-gaap:EmployeeRelatedLiabilitiesCurrent

us-gaap:EmployeeRelatedLiabilitiesCurrent


Employee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312011-12-312010-12-31
Value122102143124112901151089584124122113119134144128116117131121113956263627780696275796060565969
Percentage of EmployeeRelatedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized us-gaap:AwardType

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized

us-gaap:EmployeeStockOption


Employee
Period End2020-12-312019-12-312018-12-312017-12-312017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value8.3117.59.6122.02.42.62.72.83.13.43.64.34.84.84.64.4
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestrictedStock


Employee
Period End2020-12-312019-12-312018-12-312017-12-312017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value4.70.81.11.51.90.40.71.01.11.41.82.12.22.63.03.43.94.35.05.53.3
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized56.66.814.715.615.720.029.238.540.750.058.161.861.160.562.570.884.897.70.00.00.0

us-gaap:FinanceLeaseLiability

us-gaap:FinanceLeaseLiability


Finance
Period End2020-12-31
Value25
Percentage of FinanceLeaseLiability100.0

us-gaap:FinanceLeaseLiabilityCurrent

us-gaap:FinanceLeaseLiabilityCurrent


Finance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value221112109.0849.1689.121
Percentage of FinanceLeaseLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsDue

us-gaap:FinanceLeaseLiabilityPaymentsDue


Finance
Period End2020-12-312019-03-312018-12-31
Value272021
Percentage of FinanceLeaseLiabilityPaymentsDue100.0100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:FinanceLeaseLiabilityPaymentsDueAfterYearFive


Finance
Period End2020-12-312019-03-312018-12-31
Value2046000.03868000.03807000.0
Percentage of FinanceLeaseLiabilityPaymentsDueAfterYearFive100.0100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:FinanceLeaseLiabilityPaymentsDueNextTwelveMonths


Finance
Period End2020-12-31
Value13
Percentage of FinanceLeaseLiabilityPaymentsDueNextTwelveMonths100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFive

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFive


Finance
Period End2020-12-312019-03-312018-12-31
Value997000.0950000.0936000.0
Percentage of FinanceLeaseLiabilityPaymentsDueYearFive100.0100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFour

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFour


Finance
Period End2020-12-312019-03-312018-12-31
Value1063000.0955000.0936000.0
Percentage of FinanceLeaseLiabilityPaymentsDueYearFour100.0100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueYearThree

us-gaap:FinanceLeaseLiabilityPaymentsDueYearThree


Finance
Period End2020-12-312019-03-312018-12-31
Value3777000.04830000.04748000.0
Percentage of FinanceLeaseLiabilityPaymentsDueYearThree100.0100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueYearTwo

us-gaap:FinanceLeaseLiabilityPaymentsDueYearTwo


Finance
Period End2020-12-312019-03-312018-12-31
Value6395000.04753000.04555000.0
Percentage of FinanceLeaseLiabilityPaymentsDueYearTwo100.0100.0100.0

us-gaap:FinanceLeaseLiabilityUndiscountedExcessAmount

us-gaap:FinanceLeaseLiabilityUndiscountedExcessAmount


Finance
Period End2020-12-31
Value1997000.0
Percentage of FinanceLeaseLiabilityUndiscountedExcessAmount100.0

us-gaap:FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization

us-gaap:FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization


Finance
Period End2021-06-302021-03-312020-12-31
Value814040
Percentage of FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization100.0100.0100.0

us-gaap:FinanceLeaseWeightedAverageDiscountRatePercent

us-gaap:FinanceLeaseWeightedAverageDiscountRatePercent


Finance
Period End2020-12-312019-12-31
Value4.04.6
Percentage of FinanceLeaseWeightedAverageDiscountRatePercent100.0100.0

us-gaap:HeldToMaturitySecurities us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:HeldToMaturitySecurities

us-gaap:FairValueInputsLevel1


Held
Period End2021-06-302021-03-312020-12-312020-09-30
Value4900000.04600000.04700000.04600000.0
Percentage of HeldToMaturitySecurities100.0100.0100.0100.0

us-gaap:HeldToMaturitySecuritiesFairValue us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:HeldToMaturitySecuritiesFairValue

us-gaap:FairValueInputsLevel1


Held
Period End2021-06-302021-03-312020-12-312020-09-30
Value4900000.04600000.04700000.04600000.0
Percentage of HeldToMaturitySecuritiesFairValue100.0100.0100.0100.0

us-gaap:InterestPayableCurrent

us-gaap:InterestPayableCurrent


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value101.988102.2113.629112.95911201019112311231228132813271227123615432144214420411929152811281212
Percentage of InterestPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths


Lessee
Period End2020-12-31
Value55
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths100.0

us-gaap:LiabilityForUncertainTaxPositionsNoncurrent

us-gaap:LiabilityForUncertainTaxPositionsNoncurrent


Liability
Period End2020-12-31
Value28
Percentage of LiabilityForUncertainTaxPositionsNoncurrent100.0

us-gaap:LineOfCreditFacilityInterestRateAtPeriodEnd us-gaap:StatementGeographical, us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:LineOfCreditFacilityInterestRateAtPeriodEnd

country:KR, amkr:TermLoanDueSeptember2022, amkr:SubsidiaryTermLoans


Line
Period End2020-09-302020-06-302020-03-31
Value2.680.02940.0359
Percentage of LineOfCreditFacilityInterestRateAtPeriodEnd100.0100.0100.0

country:KR, amkr:TermLoanEnteredinApril2020, amkr:SubsidiaryTermLoans


Line
Period End2020-09-302020-04-30
Value2.560.0287
Percentage of LineOfCreditFacilityInterestRateAtPeriodEnd95.50.0

us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity us-gaap:StatementGeographical, us-gaap:CreditFacility, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType

us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity

country:KR, us-gaap:RevolvingCreditFacility, us-gaap:LineOfCredit, us-gaap:SubsequentEvent


Line
Period End2020-10-31
Value30
Percentage of LineOfCreditFacilityMaximumBorrowingCapacity100.0

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

us-gaap:LineOfCreditFacilityRemainingBorrowingCapacity

us-gaap:RevolvingCreditFacility, amkr:SeniorSecuredRevolvingCreditFacilitydueJuly2023, us-gaap:LineOfCredit


Line
Period End2021-06-302021-03-312020-12-312020-09-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value25025025025025015183176250250
Percentage of LineOfCreditFacilityRemainingBorrowingCapacity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive


Long
Period End2020-12-31
Value553
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths


Long
Period End2020-12-31
Value149
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive


Long
Period End2020-12-312012-09-30
Value274.167
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive100.0100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour


Long
Period End2020-12-312012-09-30
Value81116
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour100.0100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree


Long
Period End2020-12-312012-09-30
Value170330
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree100.0100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo


Long
Period End2020-12-312012-09-30
Value18255
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo100.0100.0

us-gaap:LongtermDebtWeightedAverageInterestRate us-gaap:Range, us-gaap:StatementGeographical, us-gaap:DebtInstrument

us-gaap:LongtermDebtWeightedAverageInterestRate

srt:WeightedAverage, country:CN, amkr:TermLoanLIBORPlus110DueMarch2024


Longterm
Period End2021-03-31
Value1.29
Percentage of LongtermDebtWeightedAverageInterestRate100.0

us-gaap:LongtermDebtWeightedAverageInterestRate us-gaap:Range, us-gaap:StatementGeographical, us-gaap:DebtInstrument, us-gaap:LongtermDebtType

srt:WeightedAverage, country:CN, amkr:TermLoanLIBORPlus110DueMarch2024, amkr:SubsidiaryTermLoans


Longterm
Period End2021-06-30
Value1.24
Percentage of LongtermDebtWeightedAverageInterestRate0.0

srt:WeightedAverage, country:JP, amkr:Shorttermtermloanvariablerate, amkr:SubsidiaryTermLoans


Longterm
Period End2021-06-302021-03-312020-09-302020-06-30
Value0.380.380.260.0018
Percentage of LongtermDebtWeightedAverageInterestRate0.029.50.00.0

us-gaap:LongtermDebtWeightedAverageInterestRate us-gaap:StatementGeographical, us-gaap:DebtInstrument, us-gaap:LongtermDebtType

country:KR, amkr:TermLoanDueDecember2028, amkr:SubsidiaryTermLoans


Longterm
Period End2020-12-31
Value3.88
Percentage of LongtermDebtWeightedAverageInterestRate0.0

country:KR, amkr:TermLoanDueJune2020, amkr:SubsidiaryTermLoans


Longterm
Period End2020-09-302020-06-30
Value4.210.0421
Percentage of LongtermDebtWeightedAverageInterestRate0.00.0

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent


Operating
Period End2020-12-312019-12-31
Value4.04.2
Percentage of OperatingLeaseWeightedAverageDiscountRatePercent100.0100.0

us-gaap:OperatingLossCarryforwards us-gaap:IncomeTaxAuthority

us-gaap:OperatingLossCarryforwards

us-gaap:InternalRevenueServiceIRS


Operating
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value222325220292363317342363396386
Percentage of OperatingLossCarryforwards100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NonUs


Operating
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value8585102.9673.378644.962
Percentage of OperatingLossCarryforwards379.0355.042.31.31.217.91.6

us-gaap:StateAndLocalJurisdiction


Operating
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value8893108121138182173197210233251
Percentage of OperatingLossCarryforwards388.7390.7427.454.947.250.254.757.757.958.765.1

us-gaap:PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesNoncurrent

us-gaap:PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesNoncurrent


Pension
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value14614615917516517817617817418118417918419118217917017716619118017616714915815315215815916816516013713513914113012512911811810910383
Percentage of PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent


Pension
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value7262554339
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent100.0100.0100.0100.0100.0

us-gaap:PostemploymentBenefitsLiabilityCurrent

us-gaap:PostemploymentBenefitsLiabilityCurrent


Postemployment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312017-12-312016-12-312015-12-312014-12-31
Value1110101111111312131315141413
Percentage of PostemploymentBenefitsLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PostemploymentBenefitsLiabilityCurrent amkr:OtherDeferredCashCompensation

amkr:KoreanSeverancePlan


Postemployment
Period End2020-12-312019-12-312018-12-312017-12-31
Value10131315
Percentage of PostemploymentBenefitsLiabilityCurrent100.0100.0100.0100.0

us-gaap:PostemploymentBenefitsLiabilityCurrentAndNoncurrent amkr:OtherDeferredCashCompensation

us-gaap:PostemploymentBenefitsLiabilityCurrentAndNoncurrent

amkr:KoreanSeverancePlan


Postemployment
Period End2020-12-312019-12-312018-12-312017-12-31
Value98127142153
Percentage of PostemploymentBenefitsLiabilityCurrentAndNoncurrent100.0100.0100.0100.0

us-gaap:PostemploymentBenefitsLiabilityNoncurrent amkr:OtherDeferredCashCompensation

us-gaap:PostemploymentBenefitsLiabilityNoncurrent

amkr:KoreanSeverancePlan


Postemployment
Period End2020-12-312019-12-312018-12-312017-12-31
Value87113128138
Percentage of PostemploymentBenefitsLiabilityNoncurrent100.0100.0100.0100.0

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization


Property
Period End2021-06-302021-03-312020-12-31
Value555254525358
Percentage of PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization100.0100.0100.0

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization


Property
Period End2021-06-302021-03-312020-12-312019-12-31
Value2873262325662404
Percentage of PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization100.0100.0100.0100.0

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization us-gaap:StatementGeographical

amkr:OtherForeignCountries


Property
Period End2020-12-31
Value0.91
Percentage of PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization0.0

country:CN


Property
Period End2020-12-31
Value397
Percentage of PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization15.5

country:JP


Property
Period End2020-12-31
Value172
Percentage of PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization6.7

country:KR


Property
Period End2020-12-31
Value1428
Percentage of PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization55.7

country:MY


Property
Period End2020-12-31
Value37
Percentage of PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization1.5

country:PH


Property
Period End2020-12-31
Value187
Percentage of PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization7.3

country:PT


Property
Period End2020-12-31
Value69
Percentage of PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization2.7

country:TW


Property
Period End2020-12-31
Value264
Percentage of PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization10.3

country:US


Property
Period End2020-12-31
Value6.625
Percentage of PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization0.3

us-gaap:NonUs


Property
Period End2020-12-31
Value2559
Percentage of PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization99.7

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization


Property
Period End2021-06-302021-03-312020-12-31
Value842680757924
Percentage of PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization100.0100.0100.0

us-gaap:PurchaseObligation

us-gaap:PurchaseObligation


Purchase
Period End2020-12-31
Value11
Percentage of PurchaseObligation100.0

us-gaap:RestrictedCashAndCashEquivalentsAtCarryingValue

us-gaap:RestrictedCashAndCashEquivalentsAtCarryingValue


Restricted
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value0.9370.9331.0070.9450.9310.610.612.592.592.5892.5892.5592.02.02.02.02.02.02.02.02.02.02.02.02.6822.6812.6812.6812.6812.6812.6812.6812.6812.682.682.682.682.682.68191919172.679
Percentage of RestrictedCashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestrictedCashAndCashEquivalentsNoncurrent

us-gaap:RestrictedCashAndCashEquivalentsNoncurrent


Restricted
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value3498000.03565000.03188000.03087000.03027000.03267000.02974000.02874000.02878000.02929000.03893000.03896000.03503000.03661000.04487000.04224000.04225000.04263000.03977000.04209000.02320000.02222000.02176000.02163000.02306000.02151000.02123000.02209000.02247000.02193000.02234000.02264000.02209000.02248000.02308000.02264000.02214000.02279000.04001000.02178000.01976000.01940000.01945000.06795000.0
Percentage of RestrictedCashAndCashEquivalentsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestructuringAndRelatedCostCostIncurredToDate1

us-gaap:RestructuringAndRelatedCostCostIncurredToDate1


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value28272517119.874
Percentage of RestructuringAndRelatedCostCostIncurredToDate1100.0100.0100.0100.0100.0100.0

us-gaap:RestructuringAndRelatedCostCostIncurredToDate1 us-gaap:RestructuringCostAndReserve

us-gaap:EmployeeSeverance


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value8.7548.6438.2585.3472.992.74
Percentage of RestructuringAndRelatedCostCostIncurredToDate130.331.031.830.725.527.7

us-gaap:FacilityClosing


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value1615149.6297.0245.809
Percentage of RestructuringAndRelatedCostCostIncurredToDate156.355.254.655.259.958.8

us-gaap:OtherRestructuring


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value3.8843.843.5232.4611.7161.325
Percentage of RestructuringAndRelatedCostCostIncurredToDate113.413.813.614.114.613.4

us-gaap:RestructuringAndRelatedCostExpectedCostRemaining1

us-gaap:RestructuringAndRelatedCostExpectedCostRemaining1


Restructuring
Period End2021-03-312020-12-312020-09-302020-06-302020-03-31
Value1.04.066131919
Percentage of RestructuringAndRelatedCostExpectedCostRemaining1100.0100.0100.0100.0100.0

us-gaap:RestructuringAndRelatedCostExpectedCostRemaining1 us-gaap:RestructuringCostAndReserve

us-gaap:EmployeeSeverance


Restructuring
Period End2020-12-312020-09-302020-06-302020-03-31
Value0.2753.06.05.0
Percentage of RestructuringAndRelatedCostExpectedCostRemaining16.823.131.626.3

us-gaap:FacilityClosing


Restructuring
Period End2021-03-312020-12-312020-09-302020-06-302020-03-31
Value1.03.648.010.011
Percentage of RestructuringAndRelatedCostExpectedCostRemaining1100.089.561.552.657.9

us-gaap:OtherRestructuring


Restructuring
Period End2020-12-312020-09-302020-06-302020-03-31
Value0.1512.03.03.0
Percentage of RestructuringAndRelatedCostExpectedCostRemaining13.715.415.815.8

us-gaap:RestructuringReserve

us-gaap:RestructuringReserve


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312012-12-312011-12-312011-09-302011-06-302010-12-312010-09-302010-06-302009-12-312008-12-31
Value143000.02536000.06343000.03312000.01544000.01103000.02641000.01607000.0027000.0104000.0670000.03130000.05090000.06751000.0782000.0
Percentage of RestructuringReserve100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestructuringReserve us-gaap:RestructuringCostAndReserve

us-gaap:EmployeeSeverance


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-312008-12-31
Value36000.0215000.01759000.01546000.066000.00271000.00001428000.00004021000.01607000.0097000.02696000.0027000.0104000.0143000.0670000.03130000.05090000.03938000.0782000.0
Percentage of RestructuringReserve25.28.527.746.74.30.010.30.00.00.00.00.00.00.00.0100.00.00.00.00.0100.0100.00.0100.0100.0100.058.3100.0

us-gaap:FacilityClosing


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value106000.02307000.04365000.01679000.01447000.01012000.02196000.0
Percentage of RestructuringReserve74.191.068.850.793.791.783.2

us-gaap:OtherRestructuring


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value1000.014000.0219000.087000.031000.091000.0174000.0
Percentage of RestructuringReserve0.70.63.52.62.08.36.6

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber

us-gaap:RestrictedStock