KLAC


Line plots across dimensions of each concept
Tables

Table of contents


us-gaap:StatementEquityComponents
us-gaap:SharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:ProductOrService
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents
us-gaap:StatementGeographical

us-gaap:Revenues

us-gaap:CostOfRevenue
us-gaap:ConsolidationItems
us-gaap:GrossProfit
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:ResearchAndDevelopmentExpense

us-gaap:SellingGeneralAndAdministrativeExpense

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

us-gaap:IncomeTaxExpenseBenefit

us-gaap:ProfitLoss

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest

us-gaap:NetIncomeLoss
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents

us-gaap:Assets

us-gaap:Liabilities

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:AssetsCurrent

us-gaap:Cash

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:AccountsReceivableNetCurrent

us-gaap:InventoryNet

us-gaap:InventoryFinishedGoods

us-gaap:OtherAssetsCurrent

us-gaap:Land

us-gaap:MachineryAndEquipmentGross

us-gaap:NoncurrentAssets
us-gaap:StatementGeographical

us-gaap:PropertyPlantAndEquipmentGross

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:Goodwill
us-gaap:ReportingUnit

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:FiniteLivedIntangibleAssetsNet
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:OtherAssetsNoncurrent

us-gaap:LiabilitiesCurrent

us-gaap:LongTermDebtCurrent

us-gaap:AccountsPayableCurrent

us-gaap:OtherAccruedLiabilitiesCurrent

us-gaap:TaxesPayableCurrent

us-gaap:OtherLiabilitiesCurrent

us-gaap:LongTermDebt

us-gaap:LongTermDebtNoncurrent

us-gaap:MinorityInterest

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents

us-gaap:ProfitLoss

us-gaap:DepreciationDepletionAndAmortization

us-gaap:IncreaseDecreaseInInventories

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:NetCashProvidedByUsedInFinancingActivities

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

us-gaap:PaymentsOfDividends
us-gaap:Dividends, us-gaap:StatementEquityComponents

us-gaap:PaymentsOfDividends
us-gaap:Dividends, us-gaap:StatementEquityComponents

us-gaap:PaymentsForRepurchaseOfCommonStock

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

us-gaap:EffectiveIncomeTaxRateContinuingOperations
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
us-gaap:AwardType, us-gaap:PlanName

us-gaap:ShareBasedCompensation

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
us-gaap:Range, us-gaap:DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensation
klac:CashLongtermIncentivePlanEqualVestingInstallments

klac:CostOfRevenueAndOperatingExpense
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents
us-gaap:Range, us-gaap:DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensation
klac:DeferredCompensationArrangementWithIndividualPercentageOfEqualVestingInstallments
us-gaap:IncomeStatementLocation
klac:GainLossonDeferredCompensationPlanAssets

klac:IncreaseDecreaseInContractWithCustomerLiabilityServiceRevenue

klac:IncreaseDecreaseInContractWithCustomerLiabilitySystemRevenue
us-gaap:IncomeStatementLocation
klac:IncreaseDecreaseinDeferredCompensationLiabilities
us-gaap:DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensation
klac:LongTermIncentivePlanGrantedAmount

klac:NoncashOrPartNoncashAcquisitionContingentConsiderationPayable

klac:NoncashTransactionIncreaseDecreaseInDividendsPayable
us-gaap:ConsolidationItems
klac:OperatingCostsAndExpensesExcludingResearchAndDevelopmentExpense
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents
klac:OtherExpenseIncomeNet

klac:ReceivablesSoldUnderFactoringAgreements
us-gaap:AwardType
klac:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodAdjustment
us-gaap:AwardType
klac:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsSharesAssumedWeightedAverageGrantDateFairValue
us-gaap:AwardType
klac:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfEqualVestingInstallments
us-gaap:AwardType, klac:InstallmentAnniversary
klac:ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentageOfEqualVestingInstallments

klac:StockRepurchaseProgramUnsettledCommonStockRepurchase

klac:TaxBenefitsFromEspp

klac:WeightedAverageFairValuePerShare

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
us-gaap:StatementEquityComponents

us-gaap:AllocatedShareBasedCompensationExpense
us-gaap:IncomeStatementLocation

us-gaap:AmortizationOfIntangibleAssets
us-gaap:IncomeStatementLocation

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CommonStockDividendsPerShareDeclared
us-gaap:Dividends
us-gaap:MajorCustomers, us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType
us-gaap:ConcentrationRiskPercentage1
us-gaap:ProductOrService, us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType
us-gaap:StatementGeographical, us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType
us-gaap:DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensation
us-gaap:DeferredCompensationArrangementWithIndividualCompensationExpense
us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation
us-gaap:DerivativeExcludedComponentGainLossRecognizedInEarnings
us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation
us-gaap:DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet

us-gaap:DividendsCommonStockCash
us-gaap:StatementEquityComponents

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
us-gaap:AwardType
us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense

us-gaap:ForeignCurrencyTransactionGainLossUnrealized

us-gaap:GainsLossesOnExtinguishmentOfDebt
us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:GoodwillForeignCurrencyTranslationGainLoss
us-gaap:ReportingUnit

us-gaap:GoodwillImpairmentLoss
us-gaap:ReportingUnit

us-gaap:GoodwillPurchaseAccountingAdjustments
us-gaap:ReportingUnit

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

us-gaap:IncomeTaxesPaid

us-gaap:IncreaseDecreaseInAccountsPayable

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities

us-gaap:InterestAndOtherIncome
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:InterestPaidNet
us-gaap:CreditFacility, us-gaap:LongtermDebtType
us-gaap:LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage

us-gaap:NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1
us-gaap:StatementBusinessSegments
us-gaap:NumberOfOperatingSegments

us-gaap:NumberOfReportableSegments

us-gaap:OperatingLeaseExpense

us-gaap:OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax
us-gaap:DebtInstrument, us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation, us-gaap:UnderlyingAssetClass
us-gaap:DerivativeInstrumentRisk

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax
us-gaap:DebtInstrument, us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation, us-gaap:UnderlyingAssetClass
us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation
us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation
us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeReclassificationForDiscontinuanceBeforeTax
us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation
us-gaap:OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseAdjustmentsBeforeTax
us-gaap:DerivativeInstrumentRisk
us-gaap:OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseBeforeAdjustmentsAndTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax

us-gaap:PaymentForContingentConsiderationLiabilityFinancingActivities

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation

us-gaap:PaymentsToAcquireAvailableForSaleSecuritiesDebt

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired

us-gaap:PaymentsToAcquireOtherInvestments

us-gaap:ProceedsFromIssuanceOfCommonStock

us-gaap:ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions

us-gaap:ProceedsFromLinesOfCredit

us-gaap:ProceedsFromLongTermLinesOfCredit

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities

us-gaap:ProceedsFromSaleAndMaturityOfMarketableSecurities

us-gaap:ProceedsFromSaleAndMaturityOfOtherInvestments

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt
us-gaap:StatementEquityComponents
us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax

us-gaap:RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty

us-gaap:RestructuringCharges

us-gaap:RevenueFromRelatedParties
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod
us-gaap:AwardType, us-gaap:PlanName
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
us-gaap:AwardType, us-gaap:PlanName
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesPurchasedForAward
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation
us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents
us-gaap:StockRepurchasedDuringPeriodShares

us-gaap:StockRepurchasedDuringPeriodValue
us-gaap:StatementEquityComponents

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment

klac:AOCICashFlowHedgeCumulativeGainLossBeforeTax

klac:BuildingsAndLeaseholdImprovements
us-gaap:BusinessAcquisition
klac:BusinessCombinationContingentConsiderationLiabilityDeferredPayment
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency
us-gaap:BusinessAcquisition
klac:BusinessCombinationContingentConsiderationLiabilityEarnOut

klac:CashCashEquivalentsAndAvailableforsaleDebtSecuritiesAccumulatedGrossUnrealizedGain
us-gaap:BalanceSheetLocation
us-gaap:FinancialInstrument

klac:CashCashEquivalentsAndAvailableforsaleDebtSecuritiesAccumulatedGrossUnrealizedLosses
us-gaap:BalanceSheetLocation
us-gaap:FinancialInstrument

klac:CashCashEquivalentsandAvailableforsaleDebtSecuritiesExcludingTimeDeposits
us-gaap:BalanceSheetLocation
us-gaap:FinancialInstrument

klac:CashCashEquivalentsandAvailableforsaleDebtSecuritiesExcludingTimeDepositsAmortizedCost
us-gaap:BalanceSheetLocation
us-gaap:FinancialInstrument
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
klac:CashEquivalentsAndMarketableSecuritiesFairValueDisclosure
us-gaap:FairValueByMeasurementFrequency

klac:ContractWithCustomerLiabilityCurrentServiceRevenue

klac:ContractWithCustomerLiabilityCurrentSystemRevenue
us-gaap:CreditFacility, us-gaap:LongtermDebtType
klac:DebtInstrumentCovenantComplianceMaximumLeverageRatio
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
klac:ExecutiveDeferredSavingsPlan
us-gaap:FairValueByMeasurementFrequency

klac:FiniteLivedIntangibleAssetsAccumulatedAmortizationAndOtherAccumulatedAdjustment
us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass
klac:IndefiniteLivedIntangibleAssetsExcludingGoodwillNetOfOtherAccumulatedAdjustment
us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass
klac:IntangibleAssetsOtherAccumulatedAdjustments

klac:OtherCurrentAssets

klac:OtherNonCurrentAssets

klac:OtherNoncurrentLiabilities1

klac:StockBasedCompensationCapitalizedAsInventory

us-gaap:AccountsReceivableGrossCurrent

us-gaap:AccruedIncomeTaxesNoncurrent

us-gaap:AccruedMarketingCostsCurrent

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent
us-gaap:DebtInstrument, us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation, us-gaap:UnderlyingAssetClass
us-gaap:AociLossCashFlowHedgeCumulativeGainLossAfterTax
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:AssetsFairValueDisclosure
us-gaap:FairValueByMeasurementFrequency

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis

us-gaap:AvailableForSaleSecuritiesDebtSecurities

us-gaap:AvailableForSaleSecuritiesDebtSecuritiesCurrent
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationContingentConsiderationLiability
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationContingentConsiderationLiabilityCurrent
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationContingentConsiderationLiabilityNoncurrent

us-gaap:CapitalizedContractCostNet
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:CashAndCashEquivalentsFairValueDisclosure
us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

us-gaap:CommonStocksIncludingAdditionalPaidInCapital

us-gaap:ConstructionInProgressGross

us-gaap:ContractWithCustomerAssetNetCurrent

us-gaap:ContractWithCustomerLiability

us-gaap:ContractWithCustomerLiabilityNoncurrent

us-gaap:DebtInstrumentCarryingAmount
us-gaap:CreditFacility, us-gaap:LongtermDebtType
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrumentFaceAmount
us-gaap:LongtermDebtType
us-gaap:DebtInstrumentFairValue
us-gaap:CreditFacility, us-gaap:LongtermDebtType
us-gaap:DebtInstrumentInterestRateEffectivePercentage
us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:DebtInstrumentUnamortizedDiscount
us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPosition
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss
us-gaap:FinancialInstrument

us-gaap:DeferredCompensationPlanAssets

us-gaap:DeferredFinanceCostsNet

us-gaap:DeferredIncomeTaxAssetsNet

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:DefinedBenefitPensionPlanLiabilitiesCurrent

us-gaap:DefinedBenefitPensionPlanLiabilitiesNoncurrent

us-gaap:DerivativeAssetFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection

us-gaap:DerivativeAssetNotOffsetPolicyElectionDeduction

us-gaap:DerivativeAssets
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency

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

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

us-gaap:DerivativeLiabilities
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency

us-gaap:DerivativeLiabilityFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection

us-gaap:DerivativeLiabilityNotOffsetPolicyElectionDeduction
us-gaap:DebtInstrument, us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation, us-gaap:UnderlyingAssetClass
us-gaap:DerivativeNotionalAmount
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation, us-gaap:Position
us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation, us-gaap:Position
us-gaap:AwardType, us-gaap:Dividends
us-gaap:DividendsPayableCurrentAndNoncurrent

us-gaap:EmployeeRelatedLiabilitiesCurrent

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsGross
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
us-gaap:ForeignCurrencyContractAssetFairValueDisclosure
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
us-gaap:ForeignCurrencyContractsLiabilityFairValueDisclosure

us-gaap:FurnitureAndFixturesGross
us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass
us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill

us-gaap:IntangibleAssetsGrossExcludingGoodwill

us-gaap:InterestAndDividendsPayableCurrent

us-gaap:InterestBearingDepositsInBanks

us-gaap:InventoryRawMaterials

us-gaap:InventoryWorkInProcess
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:InvestmentsFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument
us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:FinancialInstrument
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:LiabilitiesFairValueDisclosure
us-gaap:FairValueByMeasurementFrequency

us-gaap:OperatingLeaseLiability

us-gaap:OtherInventoriesSpareParts

us-gaap:PrepaidExpenseCurrent

us-gaap:PrepaidTaxes
us-gaap:AwardType, us-gaap:PlanName
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
us-gaap:AwardType, us-gaap:PlanName
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
us-gaap:AwardType, us-gaap:PlanName

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents

us-gaap:UnsecuredLongTermDebt

Tables

  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-30
 us-gaap:SharesOutstanding us-gaap:StatementEquityComponents us-gaap:CommonStock▄▄▆▇█▁▂▄▄▄▄▄155156158159161151153156155156156156NANANA155NANANA157NANANA165NANANANANANANANANANANANANANANANANANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding ▁▃█157158160NA157152156NA157156157NA157157157NA156155157NA162165166NA167168168NA169169169NA170169169NA171169169NA173173NA
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic ▁▄█156157158NA156152155NA156156156NA156156156NA155155156NA161164164NA166166165NA166166166NA167166166NA167166167NA171171NA
us-gaap:EarningsPerShareBasic ▄█▇▆▅██▇▇▁▆▆▆▆▅▆▅▅▄▅▄▃▄▄▅▄▄▄▅▄▄▆▅▄▅▆▅▅▅▄▃▃▃0.52.422.181.361.232.432.552.241.96-0.861.791.641.621.521.141.741.130.980.670.90.810.120.440.781.220.840.670.811.00.640.811.481.230.671.151.461.251.110.920.670.330.130.12
us-gaap:EarningsPerShareDiluted ▄█▇▆▅██▇▇▁▆▆▆▆▅▆▅▅▄▅▄▃▄▄▅▄▄▄▅▄▄▆▅▄▅▆▅▅▅▄▃▃▃0.52.42.161.351.232.422.542.221.95-0.861.781.621.611.521.131.731.120.980.660.890.810.120.430.771.210.830.660.80.980.630.81.461.210.661.131.431.221.090.910.660.330.130.12
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-30
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax ▇█▇▆▆▆▆▅▅▅▅▅▄▄▃▄▃▃▃▃▃▃▃▃▄▃▃▃▃▃▃▄▄▃▄▄▄▄▃▂▂▂▁142315091413125810971119109310701021975969938913876750919712710642756738676642734831705658720729673720892840642796892834766682559478440342
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems klac:CorporateAndReconcilingItems█▇▃▅▅▂▁224000.0121000.0-140000.0-34000.05000.0-225000.0-314000.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems us-gaap:OperatingSegments▇█▆▄▁▁▁1423150914131258109711201093NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,klac:PCBDisplayAndComponentInspection▇███▄▁▁160186178184982623NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,klac:SemiconductorProcessControl▇█▆▃▁▅▄117712471163100291410941069NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService klac:DefectInspection▆█▄▁▁▅▅▄▅▃▂▃▃▃▂536606448345334505472455486400389416399428359NA322275227391399378372449497394343NA427367396NA474343443NA563506410NA255259NA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService klac:Patterning▅▅█▄▅▅▆▅▄▅▅▄▄▃▁▂▁▂▂298289382250285288309295251274294247272223172202164206198NANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService us-gaap:Product▆█▆▄▂▃▂▂▂▁▁105111441057917793852829840797761760NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService us-gaap:Service██▇▇▅▄▃▂▂▁▁372364355340304267264229223214208NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical country:CN▇█▇█▄▆▇▅▃▂▄▃▃▂▂▄▂▂▂▁▁3523813453992062693402641436616813711573851907291754930NANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical country:JP▅▇█▄▅▇▅▅█▅▅▂▂▁▃▄▅▃▁▃▄▂▃▂▃▁▂▁▁152194206119146180135138199154146918667104119144109719913184112899964816761NANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical country:KR▇▄▅▂▅▃▄██▇▇▇▄▂▃▃▂▂▁▂▃▂▁▁▂▃▁▂▂2971811971071961261533193142702742951609613513084797381147106696080152778480NANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical country:TW▆█▇▅▄▄▄▁▂▃▁▂▅▆▄▄▂▄▄▃▂▂▁▃▄▂▁▃▃349447386309275266254124156216138183310336273241147251254234178151126232242148117209227NANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical srt:NorthAmerica▆▆██▅▅▁▁▂▅▃159158181187156150102102113149129NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:Revenues ▇█▇▆▆▆▆▅▅▅▅▅▄▄▃▄▃▃▃▃▃▃▃▃▄▃▃▃▃▃▃▄▄▃▄▄▄▄▃▂▂▂▁142315091413125810971119109310701021975969938913876750919712710642756738676642734831705658720729673720892840642796892834766682559478440342
us-gaap:CostOfRevenue ▇█▇▇▅▄▃▃▃▂▃▂▂▂▁▂▁▁▁▂▂▁▁▂▂▁▁590633604592486408381377368347353347343318277337274280270323320283288326342285277NA309303317NA355272340NA327311263NA208207NA
 us-gaap:GrossProfit us-gaap:ConsolidationItems us-gaap:OperatingSegments▇█▆▃▁▂▂870919857744656712712NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:GrossProfit us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,klac:PCBDisplayAndComponentInspection▆▇▇█▄▁▁71827688451010NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:GrossProfit us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,klac:SemiconductorProcessControl▇█▆▃▁▅▅752795742620565702702NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:GrossProfit us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,klac:SpecialtySemiconductorProcess█▇▇▆█▁▁474138334500NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:GrossProfit us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,us-gaap:AllOtherSegments▁▁▁█▁▁▁0001000NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:ResearchAndDevelopmentExpense ██▇▇▆▄▄▃▄▄▃▂▂▂▂▂▁▁▁▂▂▂▃▃▂▂▂215220210206184165153151153156146136130130129127115118119128124133143138134134132NA118121119NA110116107NA959494NA8483NA
us-gaap:SellingGeneralAndAdministrativeExpense ████▇▃▃▃▃▂▂▂▂▁▁▂▁▂▁▂▂▂▂▂▁▂▂1851921881901821121141161131051071059693941038796911019810410196939698NA989497NA909394NA989188NA93102NA
us-gaap:InterestExpense ████▆▄▄▅▅▅▅▅▅▅▅▅▅▅▅▅▅▆▁▁▁▁▁394040403126262828273030303030303030303030311313131313NA131313NA131313NA131313NA1413NA
us-gaap:IncomeTaxExpenseBenefit ▂▂▂▂▂▂▂▂▂█▂▂▂▂▂▂▂▂▂▂▂▁▂▂▂▂▂3744251328463157594815568656844563433293234-262637473728NA253841NA683655NA916569NA2316NA
us-gaap:ProfitLoss ▄█▇▆▅██▇▇▁▆78380346217192369395348306-134280NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:ComprehensiveIncomeNetOfTax ▃█▇▆▅▇█▇▇▁▆▆▆▆▅▆▅▅▄▅▄▃▄▄▅▅▄56385347213194354404349305-136281253256232180265183147991391292066129202140115NA156104143NA208107187NA214187170NA55NANA
us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest ▂▅▆▁▇████-443000.0-250000.0-129000.0-517000.0-83000.00.00.00.00.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:NetIncomeLoss ▄█▇▆▅██▇▇▁▆▆▆▆▅▆▅▅▄▅▅▃▄▄▅▅▄▅▅▄▅▆▅▄▅▆▆▅▅▄▄▃▃78380346217192369395348306-1342802562532381782711751521041421312072128203139111134166106135247205110191245209185154113572120
 us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents us-gaap:Parent▁█▇78380346NA192369395NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents us-gaap:RetainedEarnings▁█▇78380346NA192369395NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:NetIncomeLossAttributableToNoncontrollingInterest ▂▅▆▁▇████-443000.0-250000.0-129000.0-517000.0-83000.00.00.00.00.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-30
us-gaap:Assets ▇████▃▃▃▃▃▃▃▃▂▂▂▂▂▂▂▂▂▃▃▃▃▃▃▂▂▂▂▂▂▂▂▁▁88459250922990089187560556455619559854075690553253245094499649624782457245714826490249875301553854865440528352875194506850655100493347004565467544494168NA3907NANANA
us-gaap:Liabilities █████▄▄▄▅▅▅▅▅▅▅▅▅▅▅▅▅▅▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁65206562654963306302400740773998422841814226420541774129421442734305420642764404440843851771186918461890179218051748170717131784177417321630181417761702NA1660NANANA
us-gaap:LiabilitiesAndStockholdersEquity ▇████▃▃▃▃▃▃▃▃▂▂▂▂▂▂▂▂▂▃▃▃▃▃▃▂▂▂▂▂▂▂▂▁▁88459250922990089187560556455619559854075690553253245094499649624782457245714826490249875301553854865440528352875194506850655100493347004565467544494168NA3907NANANA
us-gaap:StockholdersEquity ▅▆▆▆▆▄▄▄▃▃▃▃▃▂▂▂▁▁▁▁▁▂███████▇▇▇▇▇▆▆▆▆23072669266126592849159715671620137012251463132611479657816894763652944214936023529366936393550349134823446336133523315315829682934286026732466NA2246NANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-30
us-gaap:AssetsCurrent ▇▇▇▇▇████▇█▇▆▅▅▅▅▄▄▅▅▅▇███▇▇▆▆▆▆▅▄▃▄▂▁43184377435543154442448545214549454043534559439242534031392938683906368436753904396740464368458645424507435443514263413641404164398737493596367634303126NA2835NANANA
us-gaap:Cash ▆▆▇▇▆▃▇▇█▇▅▄▅▅▅▅▅▃▃▂▂▁▁▁▁▂▂▂▂▂▁▂▂▃▂▂▃44441250347944620446747355348136030734432732033032225119618315811110510686122176125156125111126141192156165206NANA153NANANA
us-gaap:CashAndCashEquivalentsAtCarryingValue ▃▃▄▄▄█▇▆▅▄▅▄▃▃▃▄▃▃▂▃▂▁▂▂▂▂▃▄▃▂▂▂▂▃▂▂▂▁▁▁▁▁9469399881015109217931649140412551073132011539559379661108925886763838621584669630776793904985934767709751763824745711638596538529543531NA
us-gaap:AccountsReceivableNetCurrent ▇█▇▆▆▃▃▃▃▄▃▂▄▃▃▃▃▁▁▂▃▃▁▂▂▂▁▂▁▃▂▄▃▂▁▂▂▂111911911066990958658602651660740666571734663654613624427460585631632444492557573440524454606537701638544461583566531NA440NANANA
us-gaap:InventoryNet █▇▇██▅▅▅▄▃▃▃▃▂▃▃▃▃▂▂▂▂▂▂▃▂▂▂▂▂▃▂▂▂▂▂▁▁126412511254126213171005993931858787762732696671703698721691650617632662676656680663660634649662689650650639612575556504NA401NANANA
us-gaap:InventoryFinishedGoods ▆▅▇██▃▂▂▁▁▂▁▁▁▂▂▂▁▁▁▁▁▂▂▂▂▁▁▁▁▁▁▁▁▂▂▂▁150143180204198848066545362544852626768575257485360606364524754475848565867596449NA50NANANA
us-gaap:OtherAssetsCurrent ▇▆▇█▇▃▃▂▃▁▁▁▃▂▁▁▂▂▁▁▃▃▁▁▂▃▂▁▂▃▂▂▃▂▃▃▄▃3002572833232701271448513166737111810376641021066277126126736994120110751011201079212592132147161120NA131NANANA
us-gaap:Land ████▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁6767676741404040404040404040404040404040NANANA41NANANA41NANANA41414141414141NA41NANANA
us-gaap:MachineryAndEquipmentGross ▇█▇▇▇▄▄▄▄▃▃▃▂▂▁▁▁▁▁▁659699680669662602583577577568555551537528510507508508510510NANANA491NANANA476NANANA443444466457447451456NA443NANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-30
us-gaap:NoncurrentAssets ██▇▆▅▂▁▁▁▁▁▁▁▁497489475448411306291286284281279283285279NA278NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NoncurrentAssets us-gaap:StatementGeographical country:IL▇▇▇██▁▁▁▁▁▂▂▂▂5859636665272726272829303231NA30NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NoncurrentAssets us-gaap:StatementGeographical country:SG▇██▆▆▆▅▅▄▂▂▁▂▂5153524949494747444140394040NA41NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NoncurrentAssets us-gaap:StatementGeographical country:US█▇▆▅▃▂▁▁▁▁▁▁▁▁310297279253222205192187185186185191190185NA182NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NoncurrentAssets us-gaap:StatementGeographical srt:Europe████▇▁▁▁5959616257121212NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:PropertyPlantAndEquipmentGross ▇█▇▇▆▅▄▄▄▄▄▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▂▂▂▂▁▁▁▁▁▁▁▁123412811240119411481022994984977961946937924911893888894892894892888878872865875865846828815797782761755774762750750755NA735NANANA
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment ▇█▇▇▇▆▆▆▆▅▅▅▅▄▄▄▄▄▃▃▃▃▂▂▂▂▂▂▂▁▁▁▁▂▁▁▁▂737791765745737716703698693679666653638631620610606600591577566555542535549539526523516504494483485506498493499506NA498NANANA
us-gaap:PropertyPlantAndEquipmentNet ██▇▇▆▃▂▂▂▂▂▂▂▂▂▂▂▂▂▃▃▃▃▃▃▃▃▃▂▂▂▂▂▂▁▁▁▁497489475448411306291286284281279283285279272278287292302314321323329330326325319305298292288277270267264257250249NA236NANANA
us-gaap:Goodwill ▇████▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁20432299226322112172360360354349350349349335335335335335335335335335335335335335326326326326326326327327327327328328328NA328NA333NA
 us-gaap:Goodwill us-gaap:ReportingUnit klac:PCBAndDisplay▁█▆▆9071023987989NANANA0NANANA0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:Goodwill us-gaap:ReportingUnit klac:SpecialtySemiconductorProcess▁███681821821821NANANA0NANANA0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:Goodwill us-gaap:ReportingUnit klac:WaferInspectionAndPatterning███▁414414414360NANANA0NANANA0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:IntangibleAssetsNetExcludingGoodwill ▇▇▇▇█▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁14371492154915601694232519151617182234568111519232731263034394348556270778593101NA117NANANA
us-gaap:FiniteLivedIntangibleAssetsNet ▇▇▇▇█▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁12621301135813731511232519151617182234568111519232731263034394348556270778593101NA117NANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass klac:ExistingTechnology▇▇███▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁960982101910281076202016131415161223344681013151710121416182024273135404449NA57NANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass us-gaap:CustomerRelationships▆▆▆▆█▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▂2142222302303102210000000011233455678910121315161819212224NA27NANANA
us-gaap:OtherAssetsNoncurrent ▇██▄▄▂▃▂▂▂▂▂▂▁▁▁▃▄▄▄▄▄▃▄▄▄▄▄▄▄▄▄▅▅▅▆▇▇340377368265260204225216213211201195190185188174246253249259263262244258251254252269266269260275284286298328345362NA389NANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-30
us-gaap:LiabilitiesCurrent ▆▇█▇▇▅▄▄▄▄▅▄▄▄▂▃▃▂▂▃▂▂▁▂▂▂▂▂▁▁▁▂▂▂▁▂▂▁1653171819431768170014821310121812001166146612931249118797410029978589151001976942804895887927835861820781787862872829734882856793NA771NANANA
us-gaap:LongTermDebtCurrent ▁▁████00250249249249NA000249249249249NA0000163737NA0NANANANANANANANANANANANANANANANANANANA
us-gaap:AccountsPayableCurrent ▇█▆▆▆▃▃▄▄▃▃▃▃▂▁▁▂▂▁▁▁▁▁▁▂▃▂▂▁▁▂▃▃▂▂▃▃▂243256221202206152154169169149138147139116105106126122107103103108108103120141114115107103116139139129114142142123NA107NANANA
us-gaap:OtherAccruedLiabilitiesCurrent ▆▆▆█▇▃▂▄▃▂▄▄▃▂▂▃▂▂▂▄▃▃▆▆▄▄▄▄▄▄▄▅▄▅▄▃▁▂16416016319617610793123105861271169996891118482941321061051571581301211221301301331281451271381161157187NA77NANANA
us-gaap:TaxesPayableCurrent ▃▇█▂▁▃▆▂▄▂▃▂▂▂▂▃▂▂▂▂▁▂▂▂▁▂▂▁▁▁▁▁▁▂▁▂▂▂3180862373369233722341719232127191816151213151591314119111111112012162021NA35NANANA
us-gaap:OtherLiabilitiesCurrent ▆██▆▆▅▅▄▅▄▆▄▄▃▄▄▄▃▃▄▄▃▃▃▃▂▂▂▂▂▂▂▂▂▁▂▁▁8591010993827833714773699716703806649618570629662626540609661631564553585547495500527511468471513491462436502438396NA422NANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-30
us-gaap:LongTermDebt █████▁▁▁▂▂▄▅▅▅▆▆▆▆▆▇▇▇3443339934243423342222382237223724612486277429302954297930183057309731313151319032363246NA747NANANANANANANANANANANANANANANANANANANA
us-gaap:LongTermDebtNoncurrent ██▇▇▇▁▂▂▃▃▄▄▄▅34433399317431733172198822372237246124862524268027042729NA3057309731313151317331993208NA747NANANANANANANANANANANANANANANANANANANA
us-gaap:MinorityInterest ▁▁▁▁█1718181836NANA0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherLiabilitiesNoncurrent ███▇▇▅▆▆▆▆▃▂▂▂▂▂▂▂▂▃▃▃▂▁▁▁▁▁▂▂▂▂▁▁▁▁▁▁675663643587575446447471494460175172160149161156159167165182179179162483535363689929089788073737071NA69NANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-30
us-gaap:StockholdersEquity ▅▆▆▆▆▄▄▄▃▃▃▃▃▂▂▂▁▁▁▁▁▂███████▇▇▇▇▇▆▆▆▆23072669266126592849159715671620137012251463132611479657816894763652944214936023529366936393550349134823446336133523315315829682934286026732466NA2246NANANA
us-gaap:RetainedEarningsAccumulatedDeficit ▂▃▃▃▄▄▄▄▄▃▄▃▃▃▂▂▁▁▁▁▁▁███████▇▇▇▇▆▆▆▆▅376719733714928104810271056862729996848702534381284950-45-12-2242329247924642386234423592329225222562247207519281910185216741506NA1356NANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▁▃▂▂▃▂▄▄▄▄▄▄▄▄▄▄▅▄▄▅▅▅▅▆▆▆▆▅▆▇▇▆█▇███▇-88-66-71-73-68-70-56-53-54-52-50-51-48-52-46-48-43-50-46-40-37-35-36-30-31-30-31-36-24-15-13-21-7-10-6-2-8-13NA-31NANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-30
us-gaap:NetCashProvidedByUsedInOperatingActivities ▇▆█▆▃▅▆▆▆▃▆█▄▄▃▆▂▂▄▅▄▁▁▄4423874963251632823813733521293734622242221693541111001933172421134248NANA177NANANA245NANANA218NANANA95NANANANA
us-gaap:NetCashProvidedByUsedInInvestingActivities ▆▆▆▇▁▇▇▇▇▇▇▆▆▆▆▆▇▇▇▇▇█▇▆1-8-14630-17342083141262525112-154-98-140-167-69401413115759475225-280NANA-136NANANA-167NANANA-48NANANA14NANANANA
us-gaap:NetCashProvidedByUsedInFinancingActivities ▂▂▂▂█▂▂▂▃▂▂▃▃▃▃▃▃▃▂▂▂▁▃▃-432-432-373-432869-347-449-341-202-406-320-112-112-100-146-105-118-117-295-259-261-566-215-114NANA-123NANANA-123NANANA-133NANANA-110NANANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-30
us-gaap:NetCashProvidedByUsedInOperatingActivities ▇▆█▆▃▅▆▆▆▃▆█▄▄▃▆▂▂▄▅▄▁▁▄4423874963251632823813733521293734622242221693541111001933172421134248NANA177NANANA245NANANA218NANANA95NANANANA
us-gaap:NetIncomeLoss ▄█▇▆▅██▇▇▁▆▆▆▆▅▆▅▅▄▅▅▃▄▄▅▅▄▅▅▄▅▆▅▄▅▆▆▅▅▄▄▃▃78380346217192369395348306-1342802562532381782711751521041421312072128203139111134166106135247205110191245209185154113572120
 us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents us-gaap:Parent▁█▇78380346NA192369395NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents us-gaap:RetainedEarnings▁█▇78380346NA192369395NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:ProfitLoss ▄█▇▆▅██▇▇▁▆78380346217192369395348306-134280NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:DepreciationDepletionAndAmortization ▅▆▆█▅▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁8188981277315161416161514141414141516191920182122NANA20NANANA24NANANA23NANANA20NANANANA
us-gaap:IncreaseDecreaseInInventories ▄▃▃▂▃▄▇█▇▅▄▅▅▂▃▁▅▅▅▂▁▂▄▁1115-1311555736524203228-13-1-26263631-16-23-1023-21NANA29NANANA39NANANA43NANANA63NANANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-30
us-gaap:NetCashProvidedByUsedInInvestingActivities ▆▆▆▇▁▇▇▇▇▇▇▆▆▆▆▆▇▇▇▇▇█▇▆1-8-14630-17342083141262525112-154-98-140-167-69401413115759475225-280NANA-136NANANA-167NANANA-48NANANA14NANANANA
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▆▅▅█▄▄▃▃▂▂▂▁▁▁▁▁▁▁▁▁▁▂▂▂4334325525262222141315109897877910121313NANA21NANANA20NANANA12NANANA11NANANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-30
us-gaap:NetCashProvidedByUsedInFinancingActivities ▂▂▂▂█▂▂▂▃▂▂▃▃▃▃▃▃▃▂▂▂▁▃▃-432-432-373-432869-347-449-341-202-406-320-112-112-100-146-105-118-117-295-259-261-566-215-114NANA-123NANANA-123NANANA-133NANANA-110NANANANA
us-gaap:RepaymentsOfLongTermDebt 721NANA090200225255401562525404040352040299877000NANANANANANANANANANANANANANANANANANA
 us-gaap:RepaymentsOfLongTermDebt us-gaap:CreditFacility,us-gaap:LongtermDebtType us-gaap:RevolvingCreditFacility,us-gaap:LineOfCredit█▁20025NANANANANANA25NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:PaymentsOfDividends ▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁█▁▁▁▁▁133134121121113114122117929210084858489818281101798227968274747474NA666666NA585858NA414141NA2525NA
 us-gaap:PaymentsOfDividends us-gaap:Dividends,us-gaap:StatementEquityComponents klac:RegularCashDividend,us-gaap:AdditionalPaidInCapital██▆▆▅▅▆▆▃▃▃▂▂▂▁▁▁▁▁▁▁▁1331341211211131141191169292948484848181818081798082NANANANANANANANANANANANANANANANANANANANANA
us-gaap:PaymentsOfDividends ▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁█▁▁▁▁▁133134121121113114122117929210084858489818281101798227968274747474NA666666NA585858NA414141NA2525NA
 us-gaap:PaymentsOfDividends us-gaap:Dividends,us-gaap:StatementEquityComponents klac:RegularCashDividend,us-gaap:AdditionalPaidInCapital██▆▆▅▅▆▆▃▃▃▂▂▂▁▁▁▁▁▁▁▁1331341211211131141191169292948484848181818081798082NANANANANANANANANANANANANANANANANANANANANA
us-gaap:PaymentsForRepurchaseOfCommonStock ▇▇▆█▅▆▇▂▃▂▂▂▁▁▁▁▁▂▄▄▄▄▄▂3152842283442002502993884403925000003914216716814112460NANA60NANANA68NANANA66NANANA62NANANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-30
us-gaap:RepaymentsOfLongTermDebt 721NANA090200225255401562525404040352040299877000NANANANANANANANANANANANANANANANANANA
 us-gaap:RepaymentsOfLongTermDebt us-gaap:CreditFacility,us-gaap:LongtermDebtType us-gaap:RevolvingCreditFacility,us-gaap:LineOfCredit█▁20025NANANANANANA25NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA

Common Stock Value

Common Stock Par Or Stated Value Per Share

Shares Outstanding

us-gaap:StatementEquityComponents

us-gaap:SharesOutstanding

us-gaap:CommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-012018-06-302018-03-312017-12-312017-09-302017-06-302016-06-302015-06-302014-06-30
Value155156158159161151153156156155156156156155157165
Percentage of SharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Common Stock Shares Issued

Common Stock Shares Outstanding

Common Stock Shares Authorized

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-302018-03-312017-12-312017-09-302017-03-312016-12-312016-09-302016-03-312015-12-312015-09-302015-03-312014-12-312014-09-302014-03-312013-12-312013-09-302013-03-312012-12-312012-09-302012-03-312011-12-312011-09-302011-03-312010-12-312010-09-302010-03-312009-12-31
Value157158160157152156157156157157157157156155157162165166167168168169169169170169169171169169173173
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-302018-03-312017-12-312017-09-302017-03-312016-12-312016-09-302016-03-312015-12-312015-09-302015-03-312014-12-312014-09-302014-03-312013-12-312013-09-302013-03-312012-12-312012-09-302012-03-312011-12-312011-09-302011-03-312010-12-312010-09-302010-03-312009-12-31
Value156157158156152155156156156156156156155155156161164164166166165166166166167166166167166167171171
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-30
Value0.52.422.181.361.232.432.552.241.96-0.861.791.641.621.521.141.741.130.980.670.90.810.120.440.781.220.840.670.811.00.640.811.481.230.671.151.461.251.110.920.670.330.130.12
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-30
Value0.52.42.161.351.232.422.542.221.95-0.861.781.621.611.521.131.731.120.980.660.890.810.120.430.771.210.830.660.80.980.630.81.461.210.661.131.431.221.090.910.660.330.130.12
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-30
Value142315091413125810971119109310701021975969938913876750919712710642756738676642734831705658720729673720892840642796892834766682559478440342
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems

klac:CorporateAndReconcilingItems



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value224000.0121000.0-140000.0-34000.05000.0-225000.0-314000.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.0-0.0-0.00.0-0.0-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.0-0.0-0.00.0-0.0-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax klac:CorporateAndReconcilingItems100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value1423150914131258109711201093
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, klac:PCBDisplayAndComponentInspection



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value160186178184982623
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.312.312.614.79.02.32.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.312.312.614.79.02.32.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments klac:PCBDisplayAndComponentInspection100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, klac:SemiconductorProcessControl



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value117712471163100291410941069
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax82.782.682.379.783.397.797.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax82.782.682.379.783.397.797.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments klac:SemiconductorProcessControl100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, klac:SpecialtySemiconductorProcess



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value857569668400
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.05.04.95.37.70.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.05.04.95.37.70.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments klac:SpecialtySemiconductorProcess100.0100.0100.0100.0100.00.00.0

us-gaap:OperatingSegments, us-gaap:AllOtherSegments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value0024000
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.20.40.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.20.40.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments us-gaap:AllOtherSegments100.0100.0100.0100.0100.00.00.0

us-gaap:ProductOrService

klac:DefectInspection



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-312012-12-312012-09-302012-03-312011-12-312011-09-302011-03-312010-12-312010-09-302010-03-312009-12-31
Value536606448345334505472455486400389416399428359322275227391399378372449497394343427367396474343443563506410255259
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax37.740.231.727.530.445.243.242.547.741.140.244.443.748.947.845.238.835.451.754.055.958.061.259.956.052.158.754.655.156.453.555.767.566.160.153.458.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax37.740.231.727.530.445.243.242.547.741.140.244.443.748.947.845.238.835.451.754.055.958.061.259.956.052.158.754.655.156.453.555.767.566.160.153.458.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax klac:DefectInspection100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

klac:OtherRevenue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-312012-12-312012-09-302012-03-312011-12-312011-09-302011-03-312010-12-312010-09-302010-03-31
Value435949134282938154202625711891532916162427308111219251638434125244172017
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.03.93.510.72.62.73.514.42.12.72.67.62.11.12.10.34.12.42.63.33.74.61.41.61.52.83.92.35.86.05.04.03.10.52.33.13.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.03.93.510.72.62.73.514.42.12.72.67.62.11.12.10.34.12.42.63.33.74.61.41.61.52.83.92.35.86.05.04.03.10.52.33.13.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax klac:OtherRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

klac:PCBDisplayAndComponentInspection



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value103129120126682220
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.38.68.510.06.22.11.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.38.68.510.06.22.11.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax klac:PCBDisplayAndComponentInspection100.0100.0100.0100.0100.0100.0100.0

klac:Patterning



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value298289382250285288309295251274294247272223172202164206198
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax21.019.227.119.926.025.828.327.624.628.230.426.429.925.523.022.023.229.130.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax21.019.227.119.926.025.828.327.624.628.230.426.429.925.523.022.023.229.130.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax klac:Patterning100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

klac:SpecialtySemiconductorProcess



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value686056537600
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.84.04.04.27.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.84.04.04.27.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax klac:SpecialtySemiconductorProcess100.0100.0100.0100.0100.00.00.0

us-gaap:Product



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value105111441057917793852829840797761760
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax73.875.874.972.972.376.175.878.678.178.078.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax73.875.874.972.972.376.175.878.678.178.078.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Product100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Service



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value372364355340304267264229223214208
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax26.224.225.127.127.723.924.221.421.922.021.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax26.224.225.127.127.723.924.221.421.922.021.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Service100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossCashFlowHedgeIncludingNoncontrollingInterest



Period End2020-03-312019-03-31
Value30
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedGainLossCashFlowHedgeIncludingNoncontrollingInterest100.0100.0

us-gaap:StatementGeographical

country:CN



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value3523813453992062693402641436616813711573851907291754930
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax24.725.324.531.818.824.131.124.714.16.817.414.612.78.311.420.810.212.911.76.54.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax24.725.324.531.818.824.131.124.714.16.817.414.612.78.311.420.810.212.911.76.54.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:CN100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

country:JP



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value152194206119146180135138199154146918667104119144109719913184112899964816761
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.712.914.69.513.316.112.412.919.515.915.19.89.57.714.013.020.215.411.113.217.712.417.512.112.09.112.49.48.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.712.914.69.513.316.112.412.919.515.915.19.89.57.714.013.020.215.411.113.217.712.417.512.112.09.112.49.48.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:JP100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

country:KR



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value2971811971071961261533193142702742951609613513084797381147106696080152778480
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax20.912.114.08.517.911.314.029.930.827.728.331.517.611.018.014.211.811.211.410.820.015.810.88.39.721.711.711.811.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax20.912.114.08.517.911.314.029.930.827.728.331.517.611.018.014.211.811.211.410.820.015.810.88.39.721.711.711.811.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:KR100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

country:TW



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value349447386309275266254124156216138183310336273241147251254234178151126232242148117209227
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax24.629.627.424.625.123.823.311.615.322.214.319.634.038.336.526.320.735.439.531.124.122.419.731.729.221.117.829.031.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax24.629.627.424.625.123.823.311.615.322.214.319.634.038.336.526.320.735.439.531.124.122.419.731.729.221.117.829.031.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:TW100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

klac:EuropeAndIsrael



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-312012-12-312012-09-302012-03-312011-12-312011-09-302011-03-312010-12-312010-09-302009-12-31
Value769759777680718253828343919334483741395745365569457012154595989699272603926
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.36.54.26.26.97.26.67.75.28.48.64.610.110.74.65.35.35.86.27.66.15.48.69.45.510.018.57.58.98.210.610.811.78.67.95.86.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.36.54.26.26.97.26.67.75.28.48.64.610.110.74.65.35.35.86.27.66.15.48.69.45.510.018.57.58.98.210.610.811.78.67.95.86.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax klac:EuropeAndIsrael100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

klac:RestOfAsia



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-312012-12-312012-09-302012-03-312011-12-312011-09-302011-03-312010-12-312010-09-30
Value354735574045353841362821305629566211194765760848118612081367076657167107139112
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.53.22.54.63.74.13.33.64.13.73.02.33.36.43.96.28.715.714.710.17.89.013.111.122.417.112.45.010.410.67.811.18.512.818.316.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.53.22.54.63.74.13.33.64.13.73.02.33.36.43.96.28.715.714.710.17.89.013.111.122.417.112.45.010.410.67.811.18.512.818.316.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax klac:RestOfAsia100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:NorthAmerica



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value159158181187156150102102113149129
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.210.512.914.914.313.49.39.611.115.313.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.210.512.914.914.313.49.39.611.115.313.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NorthAmerica100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Revenues

us-gaap:Revenues



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-30
Value142315091413125810971119109310701021975969938913876750919712710642756738676642734831705658720729673720892840642796892834766682559478440342
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Sales Revenue Net

Sales Revenue Goods Net

Cost Of Revenue

us-gaap:CostOfRevenue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-312012-12-312012-09-302012-03-312011-12-312011-09-302011-03-312010-12-312010-09-302010-03-312009-12-31
Value590633604592486408381377368347353347343318277337274280270323320283288326342285277309303317355272340327311263208207
Percentage of CostOfRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax41.442.042.847.144.436.534.935.336.135.636.537.137.636.337.036.738.539.642.142.743.441.944.944.541.240.542.242.545.244.042.342.542.739.340.638.743.647.1

Gross Profit

us-gaap:ConsolidationItems

us-gaap:GrossProfit

us-gaap:OperatingSegments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value870919857744656712712
Percentage of GrossProfit100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax61.160.960.659.159.863.665.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments61.260.960.659.159.863.665.2

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, klac:PCBDisplayAndComponentInspection



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value71827688451010
Percentage of GrossProfit8.29.08.911.97.01.51.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.05.55.47.14.20.91.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments klac:PCBDisplayAndComponentInspection44.444.342.648.146.640.444.6

us-gaap:OperatingSegments, klac:SemiconductorProcessControl



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value752795742620565702702
Percentage of GrossProfit86.486.586.683.486.198.598.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax52.952.752.549.351.562.764.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments klac:SemiconductorProcessControl63.963.863.861.961.864.265.6

us-gaap:OperatingSegments, klac:SpecialtySemiconductorProcess



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value474138334500
Percentage of GrossProfit5.44.54.54.56.90.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.32.72.72.74.10.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments klac:SpecialtySemiconductorProcess55.555.055.250.253.70.00.0

us-gaap:OperatingSegments, us-gaap:AllOtherSegments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value0001000
Percentage of GrossProfit-0.00.00.10.10.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.00.00.00.10.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments us-gaap:AllOtherSegments-57.822.629.324.32.00.00.0

Costs And Expenses

Research And Development Expense

us-gaap:ResearchAndDevelopmentExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-312012-12-312012-09-302012-03-312011-12-312011-09-302011-03-312010-12-312010-09-302010-03-312009-12-31
Value2152202102061841651531511531561461361301301291271151181191281241331431381341341321181211191101161079594948483
Percentage of ResearchAndDevelopmentExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax15.114.614.916.416.814.814.014.215.016.115.114.514.214.917.213.916.216.718.717.016.919.722.318.916.119.120.116.318.116.613.118.113.511.512.413.917.718.9

Selling General And Administrative Expense

us-gaap:SellingGeneralAndAdministrativeExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-312012-12-312012-09-302012-03-312011-12-312011-09-302011-03-312010-12-312010-09-302010-03-312009-12-31
Value185192188190182112114116113105107105969394103879691101981041019693969898949790939498918893102
Percentage of SellingGeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax13.012.713.315.116.610.010.510.911.110.811.111.210.510.712.611.312.313.614.313.513.415.515.813.111.213.715.013.514.013.510.814.611.811.911.912.919.623.3

Operating Income Loss

Interest Expense

us-gaap:InterestExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-312012-12-312012-09-302012-03-312011-12-312011-09-302011-03-312010-12-312010-09-302010-03-312009-12-31
Value3940404031262628282730303030303030303030303113131313131313131313131313131413
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.82.72.93.22.82.42.42.62.82.83.23.33.33.54.13.44.34.34.84.14.14.62.11.81.61.92.11.82.01.91.62.11.71.61.82.02.93.1

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossCashFlowHedgeIncludingNoncontrollingInterest



Period End2020-03-312019-03-31
Value-159000.0150000.0
Percentage of InterestExpense-0.40.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedGainLossCashFlowHedgeIncludingNoncontrollingInterest-5.222.9

Other Nonoperating Income Expense

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

Income Loss From Continuing Operations Before Income Taxes Domestic

Income Loss From Continuing Operations Before Income Taxes Foreign

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-312012-12-312012-09-302012-03-312011-12-312011-09-302011-03-312010-12-312010-09-302010-03-312009-12-31
Value3744251328463157594815568656844563433293234-2626374737282538416836559165692316
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.63.01.81.12.64.22.95.45.849.45.77.37.27.85.96.24.84.74.64.44.7-3.94.25.25.75.34.43.55.75.78.25.66.911.08.610.14.93.7

Income Taxes Paid Net

Profit Loss

us-gaap:ProfitLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value78380346217192369395348306-134280
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.525.224.517.317.633.036.232.630.0-13.829.0

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-312012-12-312012-09-302012-03-312011-12-312011-09-302011-03-312010-12-312010-09-302010-03-31
Value56385347213194354404349305-13628125325623218026518314799139129206612920214011515610414320810718721418717055
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.025.524.617.017.731.737.032.629.9-13.929.027.028.126.524.028.925.720.815.518.417.53.110.317.724.320.017.621.515.619.924.816.723.525.724.425.011.7

Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-443000.0-250000.0-129000.0-517000.0-83000.00.00.00.00.0
Percentage of ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest100.0100.0100.0100.0100.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.0-0.0-0.0-0.0-0.00.00.00.00.0

Net Income Loss

us-gaap:NetIncomeLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-30
Value78380346217192369395348306-1342802562532381782711751521041421312072128203139111134166106135247205110191245209185154113572120
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.525.224.517.317.633.036.232.630.0-13.829.027.327.727.223.729.524.721.416.318.817.83.011.217.524.519.716.918.722.815.818.827.824.417.224.127.525.224.222.620.211.94.96.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossCashFlowHedgeIncludingNoncontrollingInterest



Period End2020-03-312019-03-31
Value20
Percentage of NetIncomeLoss3.70.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedGainLossCashFlowHedgeIncludingNoncontrollingInterest95.2144.4

us-gaap:StatementEquityComponents

us-gaap:Parent



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value78380346192369395
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.525.224.517.633.036.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Parent0.00.00.00.00.00.0

us-gaap:RetainedEarnings



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value78380346192369395
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.525.224.517.633.036.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.0

Net Income Loss Attributable To Noncontrolling Interest

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-443000.0-250000.0-129000.0-517000.0-83000.00.00.00.00.0
Percentage of NetIncomeLossAttributableToNoncontrollingInterest100.0100.0100.0100.0100.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.0-0.0-0.0-0.0-0.00.00.00.00.0

us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-03-31
Value-443000.0-250000.0-129000.0-83000.0
Percentage of NetIncomeLossAttributableToNoncontrollingInterest100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.0-0.0-0.0-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:NoncontrollingInterest0.00.00.00.0

Assets

us-gaap:Assets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-30
Value884592509229900891875605564556195598540756905532532450944996496247824572457148264902498753015538548654405283528751945068506551004933470045654675444941683907
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Liabilities

us-gaap:Liabilities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-30
Value652065626549633063024007407739984228418142264205417741294214427343054206427644044408438517711869184618901792180517481707171317841774173216301814177617021660
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets73.770.971.070.368.671.572.271.275.577.374.376.078.581.184.486.190.092.093.691.389.987.933.433.833.734.733.934.133.733.733.835.036.036.935.738.839.940.842.5

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-30
Value884592509229900891875605564556195598540756905532532450944996496247824572457148264902498753015538548654405283528751945068506551004933470045654675444941683907
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-302009-06-302008-06-30
Value23072669266126592849159715671620137012251463132611479657816894763652944214936023529366936393550349134823446336133523315315829682934286026732466224621842981
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets26.128.928.829.531.028.527.828.824.522.725.724.021.518.915.613.910.08.06.48.710.112.166.666.266.365.366.165.966.366.366.265.064.063.164.361.260.159.257.50.00.0

us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-06-30
Value-17-17-17-18-15-16-16-14-22-22-22-22-19-19-20-20-15
Percentage of StockholdersEquity-0.8-0.7-0.7-0.7-0.6-1.0-1.1-0.9-1.6-1.8-1.5-1.7-1.7-2.0-2.6-3.0-3.8
Percentage of Assets-0.2-0.2-0.2-0.2-0.2-0.3-0.3-0.3-0.4-0.4-0.4-0.4-0.4-0.4-0.4-0.4-0.3
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent



Period End2020-03-312019-12-312019-06-302018-06-30
Value-23-5-81
Percentage of StockholdersEquity-1.0-0.2-0.30.1
Percentage of Assets-0.3-0.1-0.10.0
Percentage of Assets us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-06-30
Value000-1-3-6-9-11-12-7-3-3-3-5030
Percentage of StockholdersEquity-0.00.00.0-0.1-0.1-0.4-0.6-0.7-0.9-0.6-0.2-0.3-0.3-0.50.10.50.2
Percentage of Assets-0.00.00.0-0.0-0.0-0.1-0.2-0.2-0.2-0.1-0.1-0.1-0.1-0.10.00.10.0
Percentage of Assets us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-06-302014-06-302013-06-302012-06-302011-06-302010-06-302009-06-302008-06-30
Value-88-66-71-73-68-70-56-53-54-52-50-51-48-52-46-48-40-30-36-21-2-31-2147
Percentage of StockholdersEquity-3.8-2.5-2.7-2.7-2.4-4.4-3.6-3.3-4.0-4.3-3.5-3.9-4.3-5.4-6.0-7.1-9.6-0.8-1.1-0.6-0.1-1.4-1.01.6
Percentage of Assets-1.0-0.7-0.8-0.8-0.7-1.3-1.0-1.0-1.0-1.0-0.9-0.9-0.9-1.0-0.9-1.0-0.8-0.5-0.7-0.4-0.1-0.80.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedTranslationAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-06-30
Value-47-43-46-44-43-43-42-29-23-26-29-30-32-37-27-32-29
Percentage of StockholdersEquity-2.0-1.6-1.7-1.7-1.5-2.7-2.7-1.8-1.7-2.2-2.0-2.3-2.8-3.9-3.5-4.7-7.1
Percentage of Assets-0.5-0.5-0.5-0.5-0.5-0.8-0.7-0.5-0.4-0.5-0.5-0.6-0.6-0.7-0.6-0.7-0.6
Percentage of Assets us-gaap:AccumulatedTranslationAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Assets Current

us-gaap:AssetsCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-30
Value431843774355431544424485452145494540435345594392425340313929386839063684367539043967404643684586454245074354435142634136414041643987374935963676343031262835
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets48.847.347.247.948.480.080.181.081.180.580.179.479.979.178.677.981.780.680.480.980.981.182.482.882.882.882.482.382.181.681.781.680.879.878.878.677.175.072.6

Cash

us-gaap:Cash



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-06-30
Value44441250347944620446747355348136030734432732033032225119618315811110510686122176125156125111126141192156165206153
Percentage of Cash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.04.55.55.34.93.68.38.49.98.96.35.66.56.46.46.76.75.54.33.83.22.22.01.91.62.33.32.43.02.52.22.52.94.13.43.54.63.9

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-06-302008-06-30
Value94693998810151092179316491404125510731320115395593796611089258867638386215846696307767939049859347677097517638247457116385965385295435315241128
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets10.710.210.711.311.932.029.225.022.419.923.220.818.018.419.322.319.419.416.717.412.711.712.611.414.114.617.118.618.015.114.014.715.517.516.315.214.414.30.013.60.00.00.00.0

Accounts Receivable Net Current

us-gaap:AccountsReceivableNetCurrent



Period End2020-03-312019-12-312019-09-302019-07-012019-06-302019-03-312018-12-312018-09-302018-07-012018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-30
Value111911911066990990958658602635651660740666571734663654613624427460585631632444492557573440524454606537701638544461583566531440
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets12.712.911.60.011.010.411.710.70.011.611.813.711.710.313.813.013.112.413.19.310.112.112.912.78.48.910.210.58.39.98.712.010.613.712.911.610.112.512.712.711.3

Inventory Net

us-gaap:InventoryNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-30
Value126412511254126213171005993931858787762732696671703698721691650617632662676656680663660634649662689650650639612575556504401
Percentage of InventoryNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets14.313.513.614.014.317.917.616.615.314.613.413.213.113.214.114.115.115.114.212.812.913.312.811.912.412.212.512.012.513.113.612.813.213.613.412.312.512.110.3

Inventory Finished Goods

us-gaap:InventoryFinishedGoods



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-30
Value15014318020419884806654536254485262676857525748536060636452475447584856586759644950
Percentage of InventoryFinishedGoods100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.71.62.02.32.21.51.41.21.01.01.11.00.91.01.21.41.41.21.11.21.01.11.11.11.21.21.00.91.00.91.11.01.11.31.51.31.41.21.3

Other Assets Current

us-gaap:OtherAssetsCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-30
Value3002572833232701271448513166737111810376641021066277126126736994120110751011201079212592132147161120131
Percentage of OtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.42.83.13.62.92.32.61.52.31.21.31.32.22.01.51.32.12.31.41.62.62.51.41.21.72.22.11.41.92.42.11.82.52.02.93.13.62.93.4

Land

us-gaap:Land



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-06-302013-06-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-30
Value676767674140404040404040404040404040404041414141414141414141
Percentage of Land100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.80.70.70.80.50.70.70.70.70.80.70.70.80.80.80.80.90.90.90.80.80.80.80.80.90.90.90.91.01.1

Machinery And Equipment Gross

us-gaap:MachineryAndEquipmentGross



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-06-302013-06-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-30
Value659699680669662602583577577568555551537528510507508508510510491476443444466457447451456443
Percentage of MachineryAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets7.57.67.47.47.210.710.310.310.310.59.810.010.110.410.210.210.611.111.210.68.99.08.79.09.910.09.610.210.911.3

Noncurrent Assets

us-gaap:NoncurrentAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-06-30
Value497489475448411306291286284281279283285279278
Percentage of NoncurrentAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.65.35.15.04.55.55.25.15.15.24.95.15.45.55.6

us-gaap:StatementGeographical

country:IL



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-06-30
Value585963666527272627282930323130
Percentage of NoncurrentAssets11.712.213.314.715.89.09.49.49.810.210.710.611.211.411.1
Percentage of Assets0.70.60.70.70.70.50.50.50.50.50.50.50.60.60.6
Percentage of Assets country:IL0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

country:SG



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-06-30
Value515352494949474744414039404041
Percentage of NoncurrentAssets10.310.911.111.012.116.116.316.415.814.914.513.814.114.415.0
Percentage of Assets0.60.60.60.50.50.90.80.80.80.80.70.70.80.80.8
Percentage of Assets country:SG0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

country:US



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-06-30
Value310297279253222205192187185186185191190185182
Percentage of NoncurrentAssets62.460.858.856.454.067.066.065.465.366.166.167.366.666.165.7
Percentage of Assets3.53.23.02.82.43.73.43.33.33.43.33.53.63.63.7
Percentage of Assets country:US0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

klac:RestOfAsia



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-06-30
Value181818171711111212111110999
Percentage of NoncurrentAssets3.73.83.94.04.23.73.94.24.64.14.03.63.53.33.4
Percentage of Assets0.20.20.20.20.20.20.20.20.20.20.20.20.20.20.2
Percentage of Assets klac:RestOfAsia0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

srt:Europe



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value5959616257121212
Percentage of NoncurrentAssets11.912.212.913.813.94.24.44.5
Percentage of Assets0.70.60.70.70.60.20.20.2
Percentage of Assets srt:Europe0.00.00.00.00.00.00.00.0

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-30
Value123412811240119411481022994984977961946937924911893888894892894892888878872865875865846828815797782761755774762750750755735
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets14.013.913.413.312.518.217.617.517.517.816.616.917.417.917.917.918.719.519.618.518.117.616.415.616.015.916.015.715.715.715.514.915.316.516.716.116.918.118.8

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-30
Value737791765745737716703698693679666653638631620610606600591577566555542535549539526523516504494483485506498493499506498
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets8.38.68.38.38.012.812.512.412.412.611.711.812.012.412.412.312.713.112.912.011.611.110.29.710.09.910.09.99.910.09.89.59.810.810.910.511.212.112.8

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-30
Value497489475448411306291286284281279283285279272278287292302314321323329330326325319305298292288277270267264257250249236
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.65.35.15.04.55.55.25.15.15.24.95.15.45.55.55.66.06.46.66.56.56.56.26.05.96.06.15.85.75.85.75.45.55.75.85.55.66.06.1

Long Term Investments

Goodwill

us-gaap:Goodwill



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-302009-12-312009-06-30
Value20432299226322112172360360354349350349349335335335335335335335335335335335335335326326326326326326327327327327328328328328333329
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets23.124.924.524.623.76.46.46.36.36.56.16.36.36.66.76.87.07.37.36.96.86.76.36.16.16.06.26.26.36.46.56.46.67.07.27.07.47.98.40.00.0

us-gaap:ReportingUnit

klac:ComponentInspection



Period End2020-03-312019-12-312019-09-302019-06-302018-06-302017-06-30
Value1313131300
Percentage of Goodwill0.70.60.60.60.00.0
Percentage of Assets0.20.10.10.20.00.0
Percentage of Assets klac:ComponentInspection0.00.00.00.00.00.0

klac:GlobalServiceAndSupport



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-06-302017-06-30
Value252525252582
Percentage of Goodwill1.31.11.11.21.22.30.8
Percentage of Assets0.30.30.30.30.30.10.1
Percentage of Assets klac:GlobalServiceAndSupport0.00.00.00.00.00.00.0

klac:OtherReportingUnits



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-06-30
Value00001312
Percentage of Goodwill0.00.00.00.00.63.5
Percentage of Assets0.00.00.00.00.10.2
Percentage of Assets klac:OtherReportingUnits0.00.00.00.00.00.0

klac:PCBAndDisplay



Period End2020-03-312019-12-312019-09-302019-06-302018-06-302017-06-30
Value907102398798900
Percentage of Goodwill44.444.543.644.80.00.0
Percentage of Assets10.311.110.711.00.00.0
Percentage of Assets klac:PCBAndDisplay0.00.00.00.00.00.0

klac:SpecialtySemiconductorProcess



Period End2020-03-312019-12-312019-09-302019-06-302018-06-302017-06-30
Value68182182182100
Percentage of Goodwill33.435.736.337.20.00.0
Percentage of Assets7.78.98.99.10.00.0
Percentage of Assets klac:SpecialtySemiconductorProcess0.00.00.00.00.00.0

klac:WaferInspectionAndPatterning



Period End2020-03-312019-12-312019-09-302019-06-302018-06-302017-06-30
Value41441441436000
Percentage of Goodwill20.318.018.316.30.00.0
Percentage of Assets4.74.54.54.00.00.0
Percentage of Assets klac:WaferInspectionAndPatterning0.00.00.00.00.00.0

Intangible Assets Net Excluding Goodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-30
Value14371492154915601694232519151617182234568111519232731263034394348556270778593101117
Percentage of IntangibleAssetsNetExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets16.316.116.817.318.40.40.40.30.30.30.30.30.00.10.10.10.10.20.20.20.30.40.40.50.60.50.60.70.80.90.91.11.31.51.71.82.12.43.0

Finite Lived Intangible Assets Net

us-gaap:FiniteLivedIntangibleAssetsNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-30
Value12621301135813731511232519151617182234568111519232731263034394348556270778593101117
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets14.314.114.715.216.40.40.40.30.30.30.30.30.00.10.10.10.10.20.20.20.30.40.40.50.60.50.60.70.80.90.91.11.31.51.71.82.12.43.0

us-gaap:FiniteLivedIntangibleAssetsByMajorClass

klac:ExistingTechnology



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-30
Value96098210191028107620201613141516122334468101315171012141618202427313540444957
Percentage of FiniteLivedIntangibleAssetsNet76.175.575.074.971.284.183.386.289.489.489.389.298.097.997.880.871.164.960.758.857.856.255.254.553.741.442.242.242.142.041.943.544.545.446.147.047.848.449.0
Percentage of Assets10.910.611.011.411.70.40.40.30.20.30.30.30.00.00.10.10.10.10.10.10.20.20.20.30.30.20.20.30.30.40.40.50.60.70.80.91.01.21.5
Percentage of Assets klac:ExistingTechnology0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

klac:TradeNameTrademark



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-30
Value81858889930000111000000001122233344555666778
Percentage of FiniteLivedIntangibleAssetsNet6.56.56.56.56.23.93.94.86.36.15.95.80.00.00.03.55.56.87.78.48.78.88.98.98.912.312.011.511.110.810.69.89.38.98.58.17.97.67.5
Percentage of Assets0.90.91.01.01.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.10.10.10.10.10.10.10.10.10.10.10.20.20.2
Percentage of Assets klac:TradeNameTrademark0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CustomerRelationships



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-30
Value214222230230310221000000001123345567891012131516181921222427
Percentage of FiniteLivedIntangibleAssetsNet17.017.117.016.820.611.211.28.04.03.93.83.82.02.12.215.723.428.331.727.425.122.121.420.820.327.426.727.327.828.228.627.526.726.025.424.724.223.823.2
Percentage of Assets2.42.42.52.63.40.00.00.00.00.00.00.00.00.00.00.00.00.00.10.10.10.10.10.10.10.10.20.20.20.20.30.30.30.40.40.50.50.60.7
Percentage of Assets us-gaap:CustomerRelationships0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OtherIntangibleAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value511202430000
Percentage of FiniteLivedIntangibleAssetsNet0.50.91.51.82.00.81.61.0
Percentage of Assets0.10.10.20.30.30.00.00.0
Percentage of Assets us-gaap:OtherIntangibleAssets0.00.00.00.00.00.00.00.0

Deferred Tax Assets Liabilities Net

Other Assets Noncurrent

us-gaap:OtherAssetsNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-30
Value340377368265260204225216213211201195190185188174246253249259263262244258251254252269266269260275284286298328345362389
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.94.14.03.02.83.64.03.93.83.93.53.53.63.63.83.55.25.55.55.45.45.34.64.74.64.74.85.15.15.35.15.45.86.16.57.07.88.710.0

Liabilities Current

us-gaap:LiabilitiesCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-30
Value1653171819431768170014821310121812001166146612931249118797410029978589151001976942804895887927835861820781787862872829734882856793771
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets18.718.621.119.618.526.423.221.721.421.625.823.423.523.319.520.220.918.820.020.819.918.915.216.216.217.115.816.315.815.415.516.917.717.716.118.919.319.019.8

Long Term Debt Current

us-gaap:LongTermDebtCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-06-30
Value0025024924924900024924924924900001637370
Percentage of LongTermDebtCurrent0.00.0100.0100.0100.0100.00.00.00.0100.0100.0100.0100.00.00.00.00.0100.0100.0100.00.0
Percentage of Assets0.00.02.72.82.74.50.00.00.04.44.54.74.90.00.00.00.00.40.80.80.0

Accounts Payable Current

us-gaap:AccountsPayableCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-30
Value243256221202206152154169169149138147139116105106126122107103103108108103120141114115107103116139139129114142142123107
Percentage of AccountsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.72.82.42.22.22.72.73.03.02.82.42.72.62.32.12.12.62.72.32.12.12.22.01.92.22.62.22.22.12.02.32.72.82.72.53.13.23.02.8

Other Accrued Liabilities Current

us-gaap:OtherAccruedLiabilitiesCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-30
Value1641601631961761079312310586127116999689111848294132106105157158130121122130130133128145127138116115718777
Percentage of OtherAccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.91.71.82.21.91.91.72.21.91.62.22.11.91.91.82.21.81.82.12.72.22.13.02.92.42.22.32.52.52.62.52.92.62.92.62.51.62.12.0

Taxes Payable Current

us-gaap:TaxesPayableCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-30
Value318086237336923372234171923212719181615121315159131411911111111201216202135
Percentage of TaxesPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.40.90.90.30.10.61.20.40.70.40.60.30.40.50.40.60.40.40.40.30.30.30.30.30.20.20.30.20.20.20.20.20.20.40.30.40.50.50.9

Other Liabilities Current

us-gaap:OtherLiabilitiesCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-30
Value8591010993827833714773699716703806649618570629662626540609661631564553585547495500527511468471513491462436502438396422
Percentage of OtherLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets9.710.910.89.29.112.813.712.512.813.014.211.711.611.212.613.313.111.813.313.712.911.310.410.610.09.19.510.09.99.29.310.110.09.89.610.79.99.510.8

Long Term Debt

us-gaap:LongTermDebt



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-06-30
Value3443339934243423342222382237223724612486277429302954297930183057309731313151319032363246747
Percentage of LongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets38.936.837.138.037.339.939.639.844.046.048.853.055.558.560.461.664.868.568.966.166.065.113.5

Long Term Debt Noncurrent

us-gaap:LongTermDebtNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-06-30
Value344333993174317331721988223722372461248625242680270427293057309731313151317331993208747
Percentage of LongTermDebtNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets38.936.834.435.234.535.539.639.844.046.044.448.550.853.661.664.868.568.965.865.364.313.5

Minority Interest

us-gaap:MinorityInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-06-30
Value17181818360
Percentage of MinorityInterest100.0100.0100.0100.0100.00.0
Percentage of Assets0.20.20.20.20.40.0

Other Liabilities Noncurrent

us-gaap:OtherLiabilitiesNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-30
Value67566364358757544644747149446017517216014916115615916716518217917916248353536368992908978807373707169
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets7.67.27.06.56.38.07.98.48.88.53.13.13.02.93.23.23.33.73.63.83.73.63.10.90.60.70.70.71.71.81.81.71.61.71.61.61.61.71.8

Stockholders Equity

us-gaap:StockholdersEquity



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-302009-06-302008-06-30
Value23072669266126592849159715671620137012251463132611479657816894763652944214936023529366936393550349134823446336133523315315829682934286026732466224621842981
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets26.128.928.829.531.028.527.828.824.522.725.724.021.518.915.613.910.08.06.48.710.112.166.666.266.365.366.165.966.366.366.265.064.063.164.361.260.159.257.50.00.0

us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-06-30
Value-17-17-17-18-15-16-16-14-22-22-22-22-19-19-20-20-15
Percentage of StockholdersEquity-0.8-0.7-0.7-0.7-0.6-1.0-1.1-0.9-1.6-1.8-1.5-1.7-1.7-2.0-2.6-3.0-3.8
Percentage of Assets-0.2-0.2-0.2-0.2-0.2-0.3-0.3-0.3-0.4-0.4-0.4-0.4-0.4-0.4-0.4-0.4-0.3
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent



Period End2020-03-312019-12-312019-06-302018-06-30
Value-23-5-81
Percentage of StockholdersEquity-1.0-0.2-0.30.1
Percentage of Assets-0.3-0.1-0.10.0
Percentage of Assets us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-06-30
Value000-1-3-6-9-11-12-7-3-3-3-5030
Percentage of StockholdersEquity-0.00.00.0-0.1-0.1-0.4-0.6-0.7-0.9-0.6-0.2-0.3-0.3-0.50.10.50.2
Percentage of Assets-0.00.00.0-0.0-0.0-0.1-0.2-0.2-0.2-0.1-0.1-0.1-0.1-0.10.00.10.0
Percentage of Assets us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-06-302014-06-302013-06-302012-06-302011-06-302010-06-302009-06-302008-06-30
Value-88-66-71-73-68-70-56-53-54-52-50-51-48-52-46-48-40-30-36-21-2-31-2147
Percentage of StockholdersEquity-3.8-2.5-2.7-2.7-2.4-4.4-3.6-3.3-4.0-4.3-3.5-3.9-4.3-5.4-6.0-7.1-9.6-0.8-1.1-0.6-0.1-1.4-1.01.6
Percentage of Assets-1.0-0.7-0.8-0.8-0.7-1.3-1.0-1.0-1.0-1.0-0.9-0.9-0.9-1.0-0.9-1.0-0.8-0.5-0.7-0.4-0.1-0.80.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedTranslationAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-06-30
Value-47-43-46-44-43-43-42-29-23-26-29-30-32-37-27-32-29
Percentage of StockholdersEquity-2.0-1.6-1.7-1.7-1.5-2.7-2.7-1.8-1.7-2.2-2.0-2.3-2.8-3.9-3.5-4.7-7.1
Percentage of Assets-0.5-0.5-0.5-0.5-0.5-0.8-0.7-0.5-0.4-0.5-0.5-0.6-0.6-0.7-0.6-0.7-0.6
Percentage of Assets us-gaap:AccumulatedTranslationAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Value

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-30
Value376719733714928104810271056862729996848702534381284950-45-12-22423292479246423862344235923292252225622472075192819101852167415061356
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.37.87.97.910.118.718.218.815.413.517.515.313.210.57.65.72.00.0-1.0-0.3-0.10.543.944.844.943.944.444.644.844.444.644.142.141.041.839.637.636.134.7

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-30
Value-88-66-71-73-68-70-56-53-54-52-50-51-48-52-46-48-43-50-46-40-37-35-36-30-31-30-31-36-24-15-13-21-7-10-6-2-8-13-31
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-1.0-0.7-0.8-0.8-0.7-1.3-1.0-1.0-1.0-1.0-0.9-0.9-0.9-1.0-0.9-1.0-0.9-1.1-1.0-0.8-0.8-0.7-0.7-0.5-0.6-0.6-0.6-0.7-0.5-0.3-0.3-0.4-0.2-0.2-0.2-0.1-0.2-0.3-0.8

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-09-302012-09-302011-09-302010-09-30
Value442387496325163282381373352129373462224222169354111100193317242113424817724521895
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax31.025.735.125.914.925.234.934.934.513.338.549.324.625.422.638.515.714.130.242.032.81.65.433.926.934.027.514.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-09-302012-09-302011-09-302010-09-30
Value1-8-14630-17342083141262525112-154-98-140-167-69401413115759475225-280-136-167-4814
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.1-0.5-10.42.4-158.118.628.811.82.52.711.7-16.4-10.8-16.0-22.4-7.55.719.95.020.98.070.335.1-38.2-20.8-23.2-6.12.1

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-09-302012-09-302011-09-302010-09-30
Value-432-432-373-432869-347-449-341-202-406-320-112-112-100-146-105-118-117-295-259-261-566-215-114-123-123-133-110
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-30.4-28.6-26.4-34.379.2-31.0-41.1-31.9-19.8-41.6-33.0-12.0-12.3-11.5-19.5-11.4-16.6-16.6-46.0-34.3-35.4-83.7-33.5-15.6-18.8-17.2-16.7-16.2

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-09-302012-09-302011-09-302010-09-30
Value442387496325163282381373352129373462224222169354111100193317242113424817724521895
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax31.025.735.125.914.925.234.934.934.513.338.549.324.625.422.638.515.714.130.242.032.81.65.433.926.934.027.514.0

Net Income Loss

us-gaap:NetIncomeLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-30
Value78380346217192369395348306-1342802562532381782711751521041421312072128203139111134166106135247205110191245209185154113572120
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.525.224.517.317.633.036.232.630.0-13.829.027.327.727.223.729.524.721.416.318.817.83.011.217.524.519.716.918.722.815.818.827.824.417.224.127.525.224.222.620.211.94.96.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossCashFlowHedgeIncludingNoncontrollingInterest



Period End2020-03-312019-03-31
Value20
Percentage of NetIncomeLoss3.70.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedGainLossCashFlowHedgeIncludingNoncontrollingInterest95.2144.4

us-gaap:StatementEquityComponents

us-gaap:Parent



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value78380346192369395
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.525.224.517.633.036.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Parent0.00.00.00.00.00.0

us-gaap:RetainedEarnings



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value78380346192369395
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.525.224.517.633.036.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.0

Profit Loss

us-gaap:ProfitLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value78380346217192369395348306-134280
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.525.224.517.317.633.036.232.630.0-13.829.0

Depreciation Depletion And Amortization

us-gaap:DepreciationDepletionAndAmortization



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-09-302012-09-302011-09-302010-09-30
Value818898127731516141616151414141414151619192018212220242320
Percentage of DepreciationDepletionAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Inventories

us-gaap:IncreaseDecreaseInInventories



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-09-302012-09-302011-09-302010-09-30
Value1115-1311555736524203228-13-1-26263631-16-23-1023-2129394363
Percentage of IncreaseDecreaseInInventories100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-09-302012-09-302011-09-302010-09-30
Value1-8-14630-17342083141262525112-154-98-140-167-69401413115759475225-280-136-167-4814
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.1-0.5-10.42.4-158.118.628.811.82.52.711.7-16.4-10.8-16.0-22.4-7.55.719.95.020.98.070.335.1-38.2-20.8-23.2-6.12.1

Payments To Acquire Property Plant And Equipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-09-302012-09-302011-09-302010-09-30
Value433432552526222214131510989787791012131321201211
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Payments To Acquire Investments

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-09-302012-09-302011-09-302010-09-30
Value-432-432-373-432869-347-449-341-202-406-320-112-112-100-146-105-118-117-295-259-261-566-215-114-123-123-133-110
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-30.4-28.6-26.4-34.379.2-31.0-41.1-31.9-19.8-41.6-33.0-12.0-12.3-11.5-19.5-11.4-16.6-16.6-46.0-34.3-35.4-83.7-33.5-15.6-18.8-17.2-16.7-16.2

Repayments Of Long Term Debt

us-gaap:RepaymentsOfLongTermDebt



Period End2020-03-312019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value721090200225255401562525404040352040299877000
Percentage of RepaymentsOfLongTermDebt100.00.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CreditFacility, us-gaap:LongtermDebtType

us-gaap:RevolvingCreditFacility, us-gaap:LineOfCredit



Period End2020-02-292020-03-312019-12-312018-03-31
Value2002002525
Percentage of RepaymentsOfLongTermDebt27.70.00.0100.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations us-gaap:RevolvingCreditFacility us-gaap:LineOfCredit0.00.00.00.0

us-gaap:DebtInstrument, us-gaap:LongtermDebtType

klac:SeniorNotesDueNovember12021, us-gaap:SeniorNotes



Period End2020-02-29
Value500
Percentage of RepaymentsOfLongTermDebt0.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.0
Percentage of LongTermDebtAndCapitalLeaseObligations klac:SeniorNotesDueNovember12021 us-gaap:SeniorNotes0.0

Payments Of Dividends

us-gaap:PaymentsOfDividends



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-312012-12-312012-09-302012-03-312011-12-312011-09-302011-03-312010-12-312010-09-302010-03-312009-12-31
Value1331341211211131141221179292100848584898182811017982279682747474746666665858584141412525
Percentage of PaymentsOfDividends100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Dividends, us-gaap:StatementEquityComponents

klac:RegularCashDividend, us-gaap:AdditionalPaidInCapital



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value1331341211211131141191169292948484848181818081798082
Percentage of PaymentsOfDividends100.0100.0100.0100.0100.099.997.799.8100.0100.093.8100.099.0100.091.499.998.699.380.399.698.22.9

Payments Of Dividends

us-gaap:PaymentsOfDividends



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-312012-12-312012-09-302012-03-312011-12-312011-09-302011-03-312010-12-312010-09-302010-03-312009-12-31
Value1331341211211131141221179292100848584898182811017982279682747474746666665858584141412525
Percentage of PaymentsOfDividends100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Dividends, us-gaap:StatementEquityComponents

klac:RegularCashDividend, us-gaap:AdditionalPaidInCapital



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value1331341211211131141191169292948484848181818081798082
Percentage of PaymentsOfDividends100.0100.0100.0100.0100.099.997.799.8100.0100.093.8100.099.0100.091.499.998.699.380.399.698.22.9

Payments For Repurchase Of Common Stock

us-gaap:PaymentsForRepurchaseOfCommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-09-302012-09-302011-09-302010-09-30
Value315284228344200250299388440392500000391421671681411246060686662
Percentage of PaymentsForRepurchaseOfCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Repayments Of Long Term Debt

us-gaap:RepaymentsOfLongTermDebt



Period End2020-03-312019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value721090200225255401562525404040352040299877000
Percentage of RepaymentsOfLongTermDebt100.00.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CreditFacility, us-gaap:LongtermDebtType

us-gaap:RevolvingCreditFacility, us-gaap:LineOfCredit



Period End2020-02-292020-03-312019-12-312018-03-31
Value2002002525
Percentage of RepaymentsOfLongTermDebt27.70.00.0100.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations us-gaap:RevolvingCreditFacility us-gaap:LineOfCredit0.00.00.00.0

us-gaap:DebtInstrument, us-gaap:LongtermDebtType

klac:SeniorNotesDueNovember12021, us-gaap:SeniorNotes



Period End2020-02-29
Value500
Percentage of RepaymentsOfLongTermDebt0.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.0
Percentage of LongTermDebtAndCapitalLeaseObligations klac:SeniorNotesDueNovember12021 us-gaap:SeniorNotes0.0

Debt Instrument Interest Rate Stated Percentage

Effective Income Tax Rate Continuing Operations

us-gaap:EffectiveIncomeTaxRateContinuingOperations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-312012-12-312012-09-302012-03-312011-12-312011-09-302011-03-312010-12-312010-09-302010-03-312009-12-31
Value0.3230.1050.068-0.0070000000000000060.130.1130.074-0.118999999999999940.1611.3870.1640.00100000000000000090.2060.2240.199-0.00400000000000000360.1630.1790.2190.0219999999999999920.2094.2340.270.00699999999999997850.190.2120.2050.1340.2640.2330.2510.2460.2240.3040.2620.310.290.427
Percentage of EffectiveIncomeTaxRateContinuingOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

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

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

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod

us-gaap:RestrictedStockUnitsRSU



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value00001000000000100000000
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0

us-gaap:AwardType, us-gaap:PlanName

us-gaap:RestrictedStockUnitsRSU, klac:TwoThousandFourPlan



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value3000.080000.0391000.0128000.0766000.020000.0318000.0226000.08000.050000.0283000.0287000.026000.0257000.0515000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod50.050.050.050.449.952.649.950.247.150.050.150.349.150.050.0

Share Based Compensation

us-gaap:ShareBasedCompensation



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-09-302012-09-302011-09-302010-12-312010-09-302009-12-31
Value31262628341516181613141412121112911121212141514191820192420
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Liabilities

Deferred Tax Assets Net

Unrecognized Tax Benefits

Deferred Tax Assets Valuation Allowance

Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset



Period End2020-03-312019-12-312019-09-30
Value98103105
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0

Cash And Cash Equivalents Period Increase Decrease

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-06-302016-06-30
Value94693998810151092179316491404125511531108
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Range, us-gaap:DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensation

klac:CashLongtermIncentivePlanEqualVestingInstallments

srt:Maximum, klac:CashLongTermIncentivePlan



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value0.00.04.00.00.00.04.0
Percentage of CashLongtermIncentivePlanEqualVestingInstallments0.00.0100.00.00.00.0100.0

srt:Minimum, klac:CashLongTermIncentivePlan



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value0.00.03.00.00.00.03.0
Percentage of CashLongtermIncentivePlanEqualVestingInstallments0.00.075.00.00.00.075.0

klac:CostOfRevenueAndOperatingExpense



Period End2020-03-312019-12-312019-09-30
Value124810461003
Percentage of CostOfRevenueAndOperatingExpense100.0100.0100.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossCashFlowHedgeIncludingNoncontrollingInterest



Period End2020-03-312019-03-31
Value12000.0-17000.0
Percentage of CostOfRevenueAndOperatingExpense0.00.0

us-gaap:Range, us-gaap:DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensation

klac:DeferredCompensationArrangementWithIndividualPercentageOfEqualVestingInstallments

srt:Maximum, klac:CashLongTermIncentivePlan



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value0.00.00.250.00.00.00.25
Percentage of DeferredCompensationArrangementWithIndividualPercentageOfEqualVestingInstallments0.00.0100.00.00.00.0100.0

srt:Minimum, klac:CashLongTermIncentivePlan



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value0.00.00.33330.00.00.00.3333
Percentage of DeferredCompensationArrangementWithIndividualPercentageOfEqualVestingInstallments0.00.0133.30.00.00.0133.3

us-gaap:IncomeStatementLocation

klac:GainLossonDeferredCompensationPlanAssets

us-gaap:SellingGeneralAndAdministrativeExpenses



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value-29112719-197507667054-16-10066-1
Percentage of GainLossonDeferredCompensationPlanAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

klac:IncreaseDecreaseInContractWithCustomerLiabilityServiceRevenue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value101-431-1512-130000
Percentage of IncreaseDecreaseInContractWithCustomerLiabilityServiceRevenue100.0100.0100.0100.0100.0100.0100.00.00.00.00.0

klac:IncreaseDecreaseInContractWithCustomerLiabilitySystemRevenue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value89-30-45132-19-790000
Percentage of IncreaseDecreaseInContractWithCustomerLiabilitySystemRevenue100.0100.0100.0100.0100.0100.0100.00.00.00.00.0

us-gaap:IncomeStatementLocation

klac:IncreaseDecreaseinDeferredCompensationLiabilities

us-gaap:SellingGeneralAndAdministrativeExpenses



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-302018-03-312017-12-312017-09-302017-03-312016-12-312016-09-302016-03-312015-12-312015-09-302015-03-312014-12-312014-09-30
Value-2912119-197076715-1610661
Percentage of IncreaseDecreaseinDeferredCompensationLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensation

klac:LongTermIncentivePlanGrantedAmount

klac:CashLongTermIncentivePlan



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value1217722259112451481
Percentage of LongTermIncentivePlanGrantedAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

klac:NoncashOrPartNoncashAcquisitionContingentConsiderationPayable



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value0-3904030000
Percentage of NoncashOrPartNoncashAcquisitionContingentConsiderationPayable100.0100.0100.0100.0100.0100.0100.00.00.00.00.0

klac:NoncashTransactionIncreaseDecreaseInDividendsPayable



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value111104
Percentage of NoncashTransactionIncreaseDecreaseInDividendsPayable100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems

klac:OperatingCostsAndExpensesExcludingResearchAndDevelopmentExpense

klac:CorporateAndReconcilingItems



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value364348784610
Percentage of OperatingCostsAndExpensesExcludingResearchAndDevelopmentExpense100.0100.0100.0100.0100.0100.0100.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

klac:OtherExpenseIncomeNet

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedNetInvestmentGainLossIncludingPortionAttributableToNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value-432000.0-82000.0-4000.0-31000.0-313000.0-469000.0-481000.0-148000.02000.0-69000.06000.010000.0-53000.030000.0204000.0233000.036000.026000.017000.0
Percentage of OtherExpenseIncomeNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

klac:ReceivablesSoldUnderFactoringAgreements



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-312012-12-312012-09-302012-03-312011-12-312011-09-302011-03-312010-12-312010-09-302010-03-312009-12-31
Value621165643483961686947314225285670594133481547253227104544374871811685096601639
Percentage of ReceivablesSoldUnderFactoringAgreements100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AwardType

klac:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodAdjustment

us-gaap:RestrictedStockUnitsRSU



Period End2020-03-312019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value99000.00.00.00.0-5000.00.00.00.0-33000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodAdjustment100.00.00.00.0100.00.00.00.0100.0

us-gaap:AwardType

klac:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsSharesAssumedWeightedAverageGrantDateFairValue

us-gaap:RestrictedStockUnitsRSU



Period End2020-03-312019-06-302019-03-312018-06-302018-03-31
Value0.00.0104.490.00.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsSharesAssumedWeightedAverageGrantDateFairValue0.00.0100.00.00.0

us-gaap:AwardType

klac:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfEqualVestingInstallments

klac:RestrictedStockUnitMarketBasedAndServiceBased



Period End2020-03-312019-12-312019-09-30
Value0.00.03.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfEqualVestingInstallments0.00.0100.0

klac:RestrictedStockUnitPerformanceBasedAndServiceBased



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value0.00.02.00.00.00.02.00.00.00.02.00.00.00.02.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfEqualVestingInstallments0.00.066.70.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AwardType, klac:InstallmentAnniversary

klac:ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentageOfEqualVestingInstallments

klac:RestrictedStockUnitMarketBasedAndServiceBased, klac:FifthAnniversary



Period End2020-03-312019-12-312019-09-30
Value0.00.00.3333
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentageOfEqualVestingInstallments0.00.0100.0

klac:RestrictedStockUnitMarketBasedAndServiceBased, klac:FourthAnniversary



Period End2020-03-312019-12-312019-09-30
Value0.00.00.3333
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentageOfEqualVestingInstallments0.00.0100.0

klac:RestrictedStockUnitMarketBasedAndServiceBased, klac:ThirdAnniversary



Period End2020-03-312019-12-312019-09-30
Value0.00.00.3333
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentageOfEqualVestingInstallments0.00.0100.0

klac:RestrictedStockUnitPerformanceBasedAndServiceBased, klac:FourthAnniversary



Period End2020-03-312019-12-312019-09-30
Value0.00.00.5
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentageOfEqualVestingInstallments0.00.0150.0

klac:RestrictedStockUnitPerformanceBasedAndServiceBased, klac:ThirdAnniversary



Period End2020-03-312019-12-312019-09-30
Value0.00.00.5
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentageOfEqualVestingInstallments0.00.0150.0

klac:StockRepurchaseProgramUnsettledCommonStockRepurchase



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value-4-4825-770-1000000-99-6065
Percentage of StockRepurchaseProgramUnsettledCommonStockRepurchase100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.00.00.00.00.0100.0100.0100.0100.0100.0100.0

klac:TaxBenefitsFromEspp



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-312012-12-312012-09-302012-03-312011-12-312011-09-302011-03-312010-12-312010-09-302010-03-312009-12-31
Value00100000000010001000001010000010010000
Percentage of TaxBenefitsFromEspp100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

klac:WeightedAverageFairValuePerShare



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-312012-12-312012-09-302012-03-312011-12-312011-09-302011-03-312010-12-312010-09-302010-03-31
Value43.3627.3527.350.0499999999999971621.2522.7322.730.0599999999999987223.6119.0419.040.01999999999999957416.4714.0514.060.04000000000000092414.2911.3411.340.014.414.6614.660.0200000000000013513.0411.811.810.3610.5410.5411.269.169.168.866.536.538.51
Percentage of WeightedAverageFairValuePerShare100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value312626341516
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:CommonStockIncludingAdditionalPaidInCapital



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-302018-03-312017-12-312017-09-30
Value312626341516161314
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:Parent



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-302018-03-312017-12-312017-09-30
Value312626341516161314
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:AllocatedShareBasedCompensationExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-312012-12-312012-09-302012-03-312011-12-312011-09-302011-03-312010-12-312010-09-302010-03-31
Value3126262834151618161314141212111291112121214151412141918141820192018192421
Percentage of AllocatedShareBasedCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeStatementLocation

us-gaap:CostOfSales



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value43233112211111110111112112
Percentage of AllocatedShareBasedCompensationExpense13.312.510.612.99.111.611.313.814.712.110.110.89.610.511.08.99.411.212.011.512.913.214.413.613.315.6

us-gaap:ResearchAndDevelopmentExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-312012-12-31
Value65564223322212211222233333554
Percentage of AllocatedShareBasedCompensationExpense21.018.919.622.114.615.815.619.219.616.615.513.915.916.517.615.721.020.020.318.423.022.524.225.527.626.128.127.328.5

us-gaap:SellingGeneralAndAdministrativeExpenses



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value2018181826111112109101099896788899878
Percentage of AllocatedShareBasedCompensationExpense65.768.569.765.076.372.673.066.965.671.474.475.374.473.071.475.469.668.867.770.164.164.361.461.059.158.3

us-gaap:AmortizationOfIntangibleAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-312012-12-312012-09-302012-03-312011-12-312011-09-30
Value54565758251111110001111334444334447778
Percentage of AmortizationOfIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeStatementLocation

us-gaap:CostOfSales



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value36363534150001
Percentage of AmortizationOfIntangibleAssets67.564.161.559.161.074.563.672.993.5

us-gaap:ResearchAndDevelopmentExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value31000.0131000.031000.01000.012000.00.00.00.00.0
Percentage of AmortizationOfIntangibleAssets0.10.20.10.00.00.00.00.00.0

us-gaap:SellingGeneralAndAdministrativeExpenses



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value17202224100000
Percentage of AmortizationOfIntangibleAssets32.535.738.440.939.026.438.931.55.4

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-302018-03-312017-12-312017-09-302017-03-312016-12-312016-09-302016-03-312015-12-312015-09-302015-03-312014-12-312014-09-302014-03-312013-12-312013-09-302013-03-312012-12-312012-09-302012-03-312011-12-312011-09-302011-03-312010-12-312010-09-302010-03-312009-12-31
Value00000000000000000000001113648101110
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount100.0100.00.0100.0100.0100.00.00.00.00.0100.0100.00.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value6-48-27-76-701144245148
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStockDividendsPerShareDeclared



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-08-062013-03-312012-12-312012-09-302012-08-022012-03-312011-12-312011-09-302011-03-312010-12-312010-09-30
Value0.850.850.750.750.750.750.750.590.590.590.540.540.540.520.520.520.520.520.50.517.00.50.449999999999999960.450.450.450.450.40.40.40.40.350.350.350.250.250.25
Percentage of CommonStockDividendsPerShareDeclared100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Dividends

klac:RegularCashDividend



Period End2020-02-112019-11-062019-08-012019-01-312018-11-072018-08-022018-05-032018-02-012017-11-012017-08-032017-05-042017-02-022016-11-022016-08-042016-05-052016-02-042015-11-042015-08-062015-05-072015-02-052014-11-06
Value0.850.850.750.750.750.750.750.590.590.590.540.540.540.520.520.520.520.520.50.50.5
Percentage of CommonStockDividendsPerShareDeclared0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:MajorCustomers, us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType

us-gaap:ConcentrationRiskPercentage1

klac:CustomerOne, us-gaap:RevenueFromContractWithCustomer, us-gaap:CustomerConcentrationRisk



Period End2020-03-312019-03-31
Value0.20.19
Percentage of ConcentrationRiskPercentage1100.0100.0

klac:CustomerTwo, us-gaap:RevenueFromContractWithCustomer, us-gaap:CustomerConcentrationRisk



Period End2020-03-31
Value0.17
Percentage of ConcentrationRiskPercentage185.0

us-gaap:ProductOrService, us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType

klac:DefectInspection, us-gaap:RevenueFromContractWithCustomer, us-gaap:ProductConcentrationRisk



Period End2020-03-312019-03-31
Value0.380.28
Percentage of ConcentrationRiskPercentage1190.0147.4

klac:OtherRevenue, us-gaap:RevenueFromContractWithCustomer, us-gaap:ProductConcentrationRisk



Period End2020-03-312019-03-31
Value0.030.06
Percentage of ConcentrationRiskPercentage115.031.6

klac:PCBDisplayAndComponentInspection, us-gaap:RevenueFromContractWithCustomer, us-gaap:ProductConcentrationRisk



Period End2020-03-312019-03-31
Value0.070.06
Percentage of ConcentrationRiskPercentage135.031.6

klac:Patterning, us-gaap:RevenueFromContractWithCustomer, us-gaap:ProductConcentrationRisk



Period End2020-03-312019-03-31
Value0.210.25
Percentage of ConcentrationRiskPercentage1105.0131.6

klac:SpecialtySemiconductorProcess, us-gaap:RevenueFromContractWithCustomer, us-gaap:ProductConcentrationRisk



Period End2020-03-312019-03-31
Value0.050.07
Percentage of ConcentrationRiskPercentage125.036.8

us-gaap:Service, us-gaap:RevenueFromContractWithCustomer, us-gaap:ProductConcentrationRisk



Period End2020-03-312019-03-31
Value0.260.28
Percentage of ConcentrationRiskPercentage1130.0147.4

us-gaap:StatementGeographical, us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType

country:CN, us-gaap:RevenueFromContractWithCustomer, us-gaap:GeographicConcentrationRisk



Period End2020-03-312019-03-31
Value0.250.19
Percentage of ConcentrationRiskPercentage1125.0100.0

country:JP, us-gaap:RevenueFromContractWithCustomer, us-gaap:GeographicConcentrationRisk



Period End2020-03-312019-03-31
Value0.110.13
Percentage of ConcentrationRiskPercentage155.068.4

country:KR, us-gaap:RevenueFromContractWithCustomer, us-gaap:GeographicConcentrationRisk



Period End2020-03-312019-03-31
Value0.210.18
Percentage of ConcentrationRiskPercentage1105.094.7

country:TW, us-gaap:RevenueFromContractWithCustomer, us-gaap:GeographicConcentrationRisk



Period End2020-03-312019-03-31
Value0.240.25
Percentage of ConcentrationRiskPercentage1120.0131.6

klac:EuropeAndIsrael, us-gaap:RevenueFromContractWithCustomer, us-gaap:GeographicConcentrationRisk



Period End2020-03-312019-03-31
Value0.050.07
Percentage of ConcentrationRiskPercentage125.036.8

klac:RestOfAsia, us-gaap:RevenueFromContractWithCustomer, us-gaap:GeographicConcentrationRisk



Period End2020-03-312019-03-31
Value0.030.04
Percentage of ConcentrationRiskPercentage115.021.1

srt:NorthAmerica, us-gaap:RevenueFromContractWithCustomer, us-gaap:GeographicConcentrationRisk



Period End2020-03-312019-03-31
Value0.110.14
Percentage of ConcentrationRiskPercentage155.073.7

us-gaap:DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensation

us-gaap:DeferredCompensationArrangementWithIndividualCompensationExpense

klac:CashLongTermIncentivePlan



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-312012-12-31
Value14131616121215141111141411111211111191010107777433
Percentage of DeferredCompensationArrangementWithIndividualCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation

us-gaap:DerivativeExcludedComponentGainLossRecognizedInEarnings

us-gaap:ForeignExchangeContract, klac:InterestIncomeAndOtherNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0.00.00.0-115000.0-121000.0-220000.0229000.036000.0-374000.0-158000.0
Percentage of DerivativeExcludedComponentGainLossRecognizedInEarnings0.00.00.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation

us-gaap:DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet

us-gaap:ForeignExchangeContract, klac:CostOfSalesAndOperatingExpense



Period End2020-03-31
Value0.0
Percentage of DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet0.0

us-gaap:ForeignExchangeContract, klac:InterestIncomeAndOtherNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value-42200-3
Percentage of DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet0.00.00.00.00.00.0

us-gaap:DividendsCommonStockCash



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value134135120114115117
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:Parent



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-302018-03-312017-12-312017-09-30
Value134135120114115117929393
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:RetainedEarnings



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-302018-03-312017-12-312017-09-302015-12-31
Value13413512011411511792939379
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.00.00.00.00.0

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-43-3001-1-10
Percentage of EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AwardType

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense

us-gaap:RestrictedStockUnitsRSU



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value493403600-1180101301223011
Percentage of EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ForeignCurrencyTransactionGainLossUnrealized



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value55-1200-1-3-1103-2
Percentage of ForeignCurrencyTransactionGainLossUnrealized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GainsLossesOnExtinguishmentOfDebt



Period End2020-03-312019-03-312015-03-312014-12-31
Value-2200-131
Percentage of GainsLossesOnExtinguishmentOfDebt100.00.00.0100.0

us-gaap:DebtInstrument, us-gaap:LongtermDebtType

klac:SeniorNotesDueNovember12021, us-gaap:SeniorNotes



Period End2020-03-31
Value-22
Percentage of GainsLossesOnExtinguishmentOfDebt99.8

us-gaap:GoodwillForeignCurrencyTranslationGainLoss



Period End2020-03-31
Value-73000.0
Percentage of GoodwillForeignCurrencyTranslationGainLoss100.0

us-gaap:ReportingUnit

klac:ComponentInspection



Period End2020-03-31
Value0.0
Percentage of GoodwillForeignCurrencyTranslationGainLoss-0.0

klac:GlobalServiceAndSupport



Period End2020-03-31
Value0.0
Percentage of GoodwillForeignCurrencyTranslationGainLoss-0.0

klac:PCBAndDisplay



Period End2020-03-31
Value0.0
Percentage of GoodwillForeignCurrencyTranslationGainLoss-0.0

klac:SpecialtySemiconductorProcess



Period End2020-03-31
Value0.0
Percentage of GoodwillForeignCurrencyTranslationGainLoss-0.0

klac:WaferInspectionAndPatterning



Period End2020-03-31
Value-73000.0
Percentage of GoodwillForeignCurrencyTranslationGainLoss100.0

us-gaap:GoodwillImpairmentLoss



Period End2020-03-312019-03-31
Value2560
Percentage of GoodwillImpairmentLoss100.00.0

us-gaap:ReportingUnit

klac:PCBAndDisplay



Period End2020-03-31
Value112
Percentage of GoodwillImpairmentLoss43.8

klac:SpecialtySemiconductorProcess



Period End2020-03-31
Value144
Percentage of GoodwillImpairmentLoss56.2

us-gaap:GoodwillPurchaseAccountingAdjustments



Period End2020-03-31
Value70000.0
Percentage of GoodwillPurchaseAccountingAdjustments100.0

us-gaap:ReportingUnit

klac:ComponentInspection



Period End2020-03-31
Value0.0
Percentage of GoodwillPurchaseAccountingAdjustments0.0

klac:GlobalServiceAndSupport



Period End2020-03-31
Value0.0
Percentage of GoodwillPurchaseAccountingAdjustments0.0

klac:PCBAndDisplay



Period End2020-03-31
Value-4
Percentage of GoodwillPurchaseAccountingAdjustments-5992.9

klac:SpecialtySemiconductorProcess



Period End2020-03-31
Value4
Percentage of GoodwillPurchaseAccountingAdjustments5992.9

klac:WaferInspectionAndPatterning



Period End2020-03-31
Value70000.0
Percentage of GoodwillPurchaseAccountingAdjustments100.0

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-312012-12-312012-09-302012-03-312011-12-312011-09-302011-03-312010-12-312010-09-302010-03-312009-12-31
Value115424371231221415427406365347336325319306222328209185134174166-6991662511761391921441762741462473012512238038
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeTaxesPaid



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-302018-03-312017-12-312017-09-30
Value9150195187247412323
Percentage of IncomeTaxesPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccountsPayable



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-09-302012-09-302011-09-302010-09-30
Value-123518-30-2-1401911-862311-1-1931540-505-17-1-23-2830
Percentage of IncreaseDecreaseInAccountsPayable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccountsReceivable



Period End2020-03-312019-12-312019-09-302019-09-302019-06-302019-03-312018-12-312018-09-302018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-09-302012-09-302011-09-302010-09-30
Value-731267675537255-33-36-2-907395-167642438-21186-32-124-431200-39-66-85-166-12950
Percentage of IncreaseDecreaseInAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-09-302012-09-302011-09-302010-09-30
Value23-38623-34165465-84201828-19-9-838-34-73-20792349-19-91-10
Percentage of IncreaseDecreaseInOtherOperatingAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-09-302012-09-302011-09-302010-09-30
Value-12516913-75-7393-4241961604037-23-261752-48-49316015-1760-8-45-108-26
Percentage of IncreaseDecreaseInOtherOperatingLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestAndOtherIncome



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-312012-12-312012-09-302012-03-312011-12-312011-09-302011-03-312010-12-312010-09-30
Value121299101188565339514311373233533063-41
Percentage of InterestAndOtherIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossCashFlowHedgeIncludingNoncontrollingInterest



Period End2020-03-312019-03-31
Value0.0158000.0
Percentage of InterestAndOtherIncome0.01.7

us-gaap:InterestPaidNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-09-302012-09-302011-09-302010-09-30
Value355326513510532553563563573563554330260000
Percentage of InterestPaidNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CreditFacility, us-gaap:LongtermDebtType

us-gaap:LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage

us-gaap:RevolvingCreditFacility, us-gaap:LineOfCredit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.00.00.001250.00.00.00.001250.00.1485
Percentage of LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage0.00.0100.00.00.00.0100.00.0100.0

us-gaap:NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-09-302012-09-30
Value3-2160-1-19-2404010100010-103010
Percentage of NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:StatementBusinessSegments

us-gaap:NumberOfOperatingSegments

klac:PCBDisplayAndComponentInspection



Period End2020-03-312019-12-312019-09-30
Value0.00.02.0
Percentage of NumberOfOperatingSegments0.00.0100.0

klac:SemiconductorProcessControl



Period End2020-03-312019-12-312019-09-30
Value0.00.02.0
Percentage of NumberOfOperatingSegments0.00.0100.0

klac:SpecialtySemiconductorProcess



Period End2020-03-312019-12-312019-09-30
Value0.00.01.0
Percentage of NumberOfOperatingSegments0.00.050.0

us-gaap:AllOtherSegments



Period End2020-03-312019-12-312019-09-30
Value0.00.01.0
Percentage of NumberOfOperatingSegments0.00.050.0

us-gaap:NumberOfReportableSegments



Period End2020-03-312019-12-312019-09-30
Value0.00.04.0
Percentage of NumberOfReportableSegments0.00.0100.0

us-gaap:OperatingLeaseExpense



Period End2020-03-31
Value8
Percentage of OperatingLeaseExpense100.0

us-gaap:OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-312012-12-312012-09-302012-03-312011-12-312011-09-30
Value00113221-4-4001-5-214-30020-200020-1210-2
Percentage of OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-312012-12-312012-09-302012-03-312011-12-312011-09-30
Value00010000-1-1000-100100000-1000100100-1
Percentage of OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-312012-12-312012-09-302012-03-312011-12-312011-09-30
Value0002000-7000200050002-1001000000000
Percentage of OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPortionAttributableToParent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-312012-12-312012-09-302012-03-312011-12-312011-09-30
Value-32-20-10-3-944127-11305-2-61-4-9-720-15-10-161-5-4
Percentage of OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-312012-12-312012-09-302012-03-312011-12-312011-09-30
Value-32-2000-3-632115-10404-1-40-2-6-41003-9-240-4-1
Percentage of OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentTaxPortionAttributableToParent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-312012-12-312012-09-302012-03-312011-12-312011-09-30
Value0000000-201001-10000-10-2-3-20001-11110-2
Percentage of OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentTaxPortionAttributableToParent100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent



Period End2020-03-312019-12-312019-03-312018-12-31
Value-172-1-16
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax



Period End2020-03-312019-12-312019-03-312018-12-31
Value-400-4
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value-1920-2-1-18
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrument, us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation, us-gaap:UnderlyingAssetClass

klac:SeniorNotesDueMarch12050, us-gaap:TreasuryLock, us-gaap:CashFlowHedging, us-gaap:DesignatedAsHedgingInstrument, us-gaap:SeniorNotes



Period End2020-03-31
Value-21
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax111.2

us-gaap:DerivativeInstrumentRisk

us-gaap:ForeignExchangeContract



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value-1920-21-1
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax99.7100.799.798.8-139.66.3

us-gaap:InterestRateContract



Period End2020-03-312019-12-312019-06-302019-03-312018-12-31
Value000-3-17
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax-0.00.0-0.0235.893.5

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value20-1001
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrument, us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation, us-gaap:UnderlyingAssetClass

klac:InterestRatePriorToExpectedDebtIssuances, us-gaap:TreasuryLock, us-gaap:CashFlowHedging, us-gaap:DesignatedAsHedgingInstrument, us-gaap:SeniorNotes



Period End2020-03-31
Value-300000.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax-10.3

klac:SeniorNotesDueMarch12050, us-gaap:TreasuryLock, us-gaap:CashFlowHedging, us-gaap:DesignatedAsHedgingInstrument, us-gaap:SeniorNotes



Period End2020-03-31
Value-100000.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax-3.4

us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation

us-gaap:ForeignExchangeContract, klac:CostOfSalesAndOperatingExpense



Period End2020-03-312019-12-312019-09-30
Value00-1
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax0.413.6117.9

us-gaap:ForeignExchangeContract, klac:InterestIncomeAndOtherNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value0.00.00.0-158000.0158000.0-3000.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax0.0-0.0-0.0-52.816.7-0.2

us-gaap:ForeignExchangeContract, us-gaap:Sales



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value200001
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax102.3-68.0-31.1329.869.298.2

us-gaap:InterestRateContract, us-gaap:InterestExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value-159000.0-100000.0-99000.0-103000.0150000.0189000.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax-5.580.06.5-34.415.910.9

us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeReclassificationForDiscontinuanceBeforeTax

us-gaap:InterestRateContract, klac:CostOfSalesAndOperatingExpense



Period End2020-03-31
Value0.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeReclassificationForDiscontinuanceBeforeTax0.0

us-gaap:InterestRateContract, klac:InterestIncomeAndOtherNet



Period End2020-03-312019-12-312019-06-302019-03-312018-12-31
Value0.00.04000.00.0-108000.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeReclassificationForDiscontinuanceBeforeTax0.00.00.00.00.0

us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation

us-gaap:OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseAdjustmentsBeforeTax

us-gaap:ForeignExchangeContract, us-gaap:Sales



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value81000.0-93000.0-102000.0-80000.00.080000.0
Percentage of OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseAdjustmentsBeforeTax100.0100.0100.0100.00.0100.0

us-gaap:DerivativeInstrumentRisk

us-gaap:OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseBeforeAdjustmentsAndTax

us-gaap:ForeignExchangeContract



Period End2020-03-312019-12-312019-03-312018-12-31
Value-65000.0-15000.0-53000.0-29000.0
Percentage of OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseBeforeAdjustmentsAndTax100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-2151-41-1480-1-10
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value-21511-148
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0

us-gaap:Parent



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value-21511-148
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-03-312015-12-312015-09-302015-03-312014-12-312014-09-302014-03-312013-12-312013-09-302013-03-312012-12-31
Value00000000000000000000101001
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-312012-12-312012-09-302012-03-312011-12-312011-09-30
Value00123221-5-5001-7-225-40-130-2100400310-2
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentForContingentConsiderationLiabilityFinancingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0.03000.057000.0649000.0513000.00.00.00.0
Percentage of PaymentForContingentConsiderationLiabilityFinancingActivities0.0100.0100.0100.0100.00.00.00.0

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-09-302012-09-302011-09-30
Value4122360326202230101701021010270481817
Percentage of PaymentsRelatedToTaxWithholdingForShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireAvailableForSaleSecuritiesDebt



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value1561442637802027112134191
Percentage of PaymentsToAcquireAvailableForSaleSecuritiesDebt100.0100.0100.0100.00.0100.00.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-06-302014-06-302013-06-30
Value0078018060111104028000000
Percentage of PaymentsToAcquireBusinessesNetOfCashAcquired100.00.0100.00.0100.00.0100.0100.00.0100.0100.0100.00.00.00.00.00.00.0

us-gaap:PaymentsToAcquireOtherInvestments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-09-302012-09-302011-09-302010-09-30
Value4612918302741234181191420522013161811916221120111816
Percentage of PaymentsToAcquireOtherInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromIssuanceOfCommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-06-302017-03-312016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-09-302012-09-302011-09-302010-09-30
Value024044020040021016021017024420412392
Percentage of ProceedsFromIssuanceOfCommonStock100.0100.0100.0100.00.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-06-302016-03-312015-12-312015-06-302015-03-312014-12-312014-06-302014-03-312013-12-312013-03-312012-12-312012-03-312011-12-312011-03-312010-12-312010-03-312009-12-31
Value0240440200400202102316021160241702202001901608
Percentage of ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions0.0100.00.0100.00.0100.00.0100.00.0100.0100.00.0100.0100.00.0100.0100.00.0100.0100.00.0100.00.0100.00.0100.00.0100.00.0100.0

us-gaap:ProceedsFromLinesOfCredit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-312012-12-312012-09-302012-03-312011-12-312011-09-302011-03-312010-12-312010-09-302010-03-31
Value26109354081000052879331440000680003009049335013
Percentage of ProceedsFromLinesOfCredit100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0100.0100.00.00.00.0100.00.00.0100.00.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromLongTermLinesOfCredit



Period End2020-03-312019-06-302019-03-312018-06-302018-03-312017-06-302017-03-31
Value009000000
Percentage of ProceedsFromLongTermLinesOfCredit0.00.0100.00.00.00.00.0

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-09-302012-09-30
Value13315819814660128254118971232682271151591971301461411841341812481351403275
Percentage of ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleAndMaturityOfMarketableSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-09-302012-09-302011-09-302010-09-30
Value451511202729714312114111623452116201513131718121891630
Percentage of ProceedsFromSaleAndMaturityOfMarketableSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleAndMaturityOfOtherInvestments



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-302018-03-312017-03-312016-03-312015-03-31
Value0010000020
Percentage of ProceedsFromSaleAndMaturityOfOtherInvestments0.00.0100.00.00.00.00.00.0100.00.0

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value69102516401079168585650
Percentage of ProceedsFromSaleOfAvailableForSaleSecuritiesDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax

us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-03-312016-12-312016-09-30
Value00010000000000
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-312012-12-312012-09-302012-03-312011-12-312011-09-302011-03-312010-12-312010-09-302010-03-312009-12-31
Value000001012000000000000000010010222211001
Percentage of RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestructuringCharges



Period End2020-03-312019-12-312017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value320000001722133
Percentage of RestructuringCharges100.0100.00.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromRelatedParties



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-312012-12-312012-09-302012-03-312011-12-312011-09-30
Value021010000000000000000001000012300
Percentage of RevenueFromRelatedParties100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod

us-gaap:RestrictedStockUnitsRSU



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value35000.04000.016000.031000.00.016000.04000.04000.06000.057000.02000.012000.022000.032000.035000.0274000.043000.040000.0152000.096000.058000.021000.021000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AwardType, us-gaap:PlanName

us-gaap:RestrictedStockUnitsRSU, klac:TwoThousandFourPlan



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value29000.04000.016000.028000.00.08000.02000.03000.02000.029000.01000.06000.011000.016000.018000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod82.9100.0100.090.30.050.050.075.033.350.950.050.050.050.051.4

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue

us-gaap:RestrictedStockUnitsRSU



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value168.92171.98136.76-4.06000000000000297.696.51118.474.109999999999999109.8105.1588.967.379999999999995586.0475.3868.740.00.066.8350.440.063.1681.2874.26
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.00.0100.0100.0100.0

us-gaap:AwardType, us-gaap:PlanName

us-gaap:RestrictedStockUnitsRSU, klac:TwoThousandFourPlan



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value0.180000000000006825.990000000000009136.76-4.060000000000002-13.61999999999999-1.2600000000000051118.474.1099999999999990.450000000000002842.43000000000000788.967.37999999999999550.52.21000000000000868.74
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue0.13.5100.0100.0-14.0-1.3100.0100.00.42.3100.0100.00.62.9100.0

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue

us-gaap:RestrictedStockUnitsRSU



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value222630134636705360212903245
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate

klac:EmployeeStockPurchasePlan



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value0.0190.0250.0250.00.0330.0290.0290.00.0240.0260.0260.00.0270.030.029
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate

klac:EmployeeStockPurchasePlan



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value0.370.3160.3160.00.3630.30.30.00.3150.2590.2590.00.2610.2060.206
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate

klac:EmployeeStockPurchasePlan



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value0.0180.0240.0240.00.0240.0190.0190.00.0130.0090.0090.00.0050.0040.004
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesPurchasedForAward



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-06-302016-03-312015-12-312015-06-302015-03-312014-12-312014-06-302014-03-312013-12-312013-03-312012-12-312012-03-312011-12-312011-03-312010-12-312010-03-312009-12-31
Value0.0237000.00.0573000.00.0270000.00.0469000.00.0264000.0321000.00.0384000.0281000.00.0454000.0354000.00.0405000.0327000.00.0469000.00.0496000.00.0545000.00.0701000.00.0259000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesPurchasedForAward0.0100.00.0100.00.0100.00.0100.00.0100.0100.00.0100.0100.00.0100.0100.00.0100.0100.00.0100.00.0100.00.0100.00.0100.00.0100.0

us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation

us-gaap:CommonStock



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-302018-03-312017-12-312017-09-30
Value177000.0442000.0281000.026000.0321000.0332000.06000.0309000.0334000.0
Percentage of StockIssuedDuringPeriodSharesShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value-412-23017-26
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:CommonStockIncludingAdditionalPaidInCapital



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-302018-03-312017-12-312017-09-30
Value-412-23017-26018-23
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:Parent



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-302018-03-312017-12-312017-09-30
Value-412-23017-26018-23
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:StatementEquityComponents

us-gaap:StockRepurchasedDuringPeriodShares

us-gaap:CommonStock



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value111122
Percentage of StockRepurchasedDuringPeriodShares100.0100.0100.0100.0100.0100.0

us-gaap:StockRepurchasedDuringPeriodValue



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value311280228206242307
Percentage of StockRepurchasedDuringPeriodValue100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:CommonStockIncludingAdditionalPaidInCapital



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value2521207911
Percentage of StockRepurchasedDuringPeriodValue8.27.69.23.54.13.6

us-gaap:Parent



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value311280228206242307
Percentage of StockRepurchasedDuringPeriodValue100.0100.0100.0100.0100.0100.0

us-gaap:RetainedEarnings



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value286259207198232296
Percentage of StockRepurchasedDuringPeriodValue91.892.490.896.595.996.4

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-302018-03-312017-12-312017-09-302017-03-312016-12-312016-09-302016-03-312015-12-312015-09-302015-03-312014-12-312014-09-302014-03-312013-12-312013-09-302013-03-312012-12-312012-09-302012-03-312011-12-312011-09-302011-03-312010-12-312010-09-302010-03-312009-12-31
Value11100000100000111111222332332212
Percentage of WeightedAverageNumberDilutedSharesOutstandingAdjustment100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

klac:AOCICashFlowHedgeCumulativeGainLossBeforeTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-29-7-10-10-7-5152
Percentage of AOCICashFlowHedgeCumulativeGainLossBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0

klac:BuildingsAndLeaseholdImprovements



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-06-302013-06-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-30
Value398416405402389340333335330323321319318315314313319318316316302272244237237234234232230224
Percentage of BuildingsAndLeaseholdImprovements100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BusinessAcquisition

klac:BusinessCombinationContingentConsiderationLiabilityDeferredPayment

klac:Orbotech



Period End2020-03-312019-12-312019-09-302019-02-20
Value6688
Percentage of BusinessCombinationContingentConsiderationLiabilityDeferredPayment100.0100.0100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-31
Value66888
Percentage of BusinessCombinationContingentConsiderationLiabilityDeferredPayment100.0100.0100.00.00.0

us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-31
Value66888
Percentage of BusinessCombinationContingentConsiderationLiabilityDeferredPayment100.0100.0100.00.00.0

us-gaap:BusinessAcquisition

klac:BusinessCombinationContingentConsiderationLiabilityEarnOut

klac:Orbotech



Period End2020-03-312019-12-312019-09-302019-02-20
Value3337
Percentage of BusinessCombinationContingentConsiderationLiabilityEarnOut100.0100.0100.0100.0

klac:CashCashEquivalentsAndAvailableforsaleDebtSecuritiesAccumulatedGrossUnrealizedGain



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value30000000
Percentage of CashCashEquivalentsAndAvailableforsaleDebtSecuritiesAccumulatedGrossUnrealizedGain100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BalanceSheetLocation

us-gaap:CashAndCashEquivalents



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0.00.00.017000.00.036000.00.00.0
Percentage of CashCashEquivalentsAndAvailableforsaleDebtSecuritiesAccumulatedGrossUnrealizedGain0.00.00.09.00.094.70.00.0

us-gaap:FinancialInstrument

us-gaap:CorporateDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value307000.0623000.0430000.0141000.043000.00.0137000.0148000.0
Percentage of CashCashEquivalentsAndAvailableforsaleDebtSecuritiesAccumulatedGrossUnrealizedGain10.167.175.474.697.70.093.288.6

us-gaap:MunicipalBonds



Period End2020-03-312019-12-312019-09-302019-06-30
Value161000.09000.07000.03000.0
Percentage of CashCashEquivalentsAndAvailableforsaleDebtSecuritiesAccumulatedGrossUnrealizedGain5.31.01.21.6

us-gaap:SovereignDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value30000.08000.03000.01000.00.00.00.00.0
Percentage of CashCashEquivalentsAndAvailableforsaleDebtSecuritiesAccumulatedGrossUnrealizedGain1.00.90.50.50.00.00.00.0

us-gaap:USGovernmentAgenciesDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value272000.050000.010000.05000.01000.02000.010000.016000.0
Percentage of CashCashEquivalentsAndAvailableforsaleDebtSecuritiesAccumulatedGrossUnrealizedGain9.05.41.82.62.35.36.89.6

us-gaap:USTreasurySecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value20000000
Percentage of CashCashEquivalentsAndAvailableforsaleDebtSecuritiesAccumulatedGrossUnrealizedGain74.625.721.120.60.094.70.01.8

klac:CashCashEquivalentsAndAvailableforsaleDebtSecuritiesAccumulatedGrossUnrealizedLosses



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value3001481114
Percentage of CashCashEquivalentsAndAvailableforsaleDebtSecuritiesAccumulatedGrossUnrealizedLosses100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BalanceSheetLocation

us-gaap:CashAndCashEquivalents



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value1000.00.00.02000.00.00.02000.00.0
Percentage of CashCashEquivalentsAndAvailableforsaleDebtSecuritiesAccumulatedGrossUnrealizedLosses0.00.00.00.20.00.00.00.0

us-gaap:FinancialInstrument

us-gaap:CorporateDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value30002457
Percentage of CashCashEquivalentsAndAvailableforsaleDebtSecuritiesAccumulatedGrossUnrealizedLosses99.537.626.547.250.656.450.853.0

us-gaap:MunicipalBonds



Period End2020-03-312019-12-312019-09-302019-06-30
Value9000.03000.00.00.0
Percentage of CashCashEquivalentsAndAvailableforsaleDebtSecuritiesAccumulatedGrossUnrealizedLosses0.33.50.00.0

us-gaap:SovereignDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0.00.03000.08000.046000.089000.0147000.0151000.0
Percentage of CashCashEquivalentsAndAvailableforsaleDebtSecuritiesAccumulatedGrossUnrealizedLosses0.00.00.70.61.11.11.31.1

us-gaap:USGovernmentAgenciesDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value00000122
Percentage of CashCashEquivalentsAndAvailableforsaleDebtSecuritiesAccumulatedGrossUnrealizedLosses0.215.316.919.618.917.319.520.0

us-gaap:USTreasurySecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value00001233
Percentage of CashCashEquivalentsAndAvailableforsaleDebtSecuritiesAccumulatedGrossUnrealizedLosses0.043.555.932.529.325.128.526.0

klac:CashCashEquivalentsandAvailableforsaleDebtSecuritiesExcludingTimeDeposits



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value11041179116211601395244122862352
Percentage of CashCashEquivalentsandAvailableforsaleDebtSecuritiesExcludingTimeDeposits100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BalanceSheetLocation

us-gaap:CashAndCashEquivalents



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value50152748453664515891181930
Percentage of CashCashEquivalentsandAvailableforsaleDebtSecuritiesExcludingTimeDeposits45.444.741.746.246.265.151.739.6

us-gaap:FinancialInstrument

klac:MoneyMarketBankDepositsAndOther



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value4154353993525928771118863
Percentage of CashCashEquivalentsandAvailableforsaleDebtSecuritiesExcludingTimeDeposits37.737.034.330.442.435.948.936.7

us-gaap:CorporateDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value386386420433439500595740
Percentage of CashCashEquivalentsandAvailableforsaleDebtSecuritiesExcludingTimeDeposits35.032.736.237.331.520.526.031.5

us-gaap:MunicipalBonds



Period End2020-03-312019-12-312019-09-302019-06-30
Value19911
Percentage of CashCashEquivalentsandAvailableforsaleDebtSecuritiesExcludingTimeDeposits1.80.80.20.2

us-gaap:SovereignDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value666510101717
Percentage of CashCashEquivalentsandAvailableforsaleDebtSecuritiesExcludingTimeDeposits0.50.50.50.50.80.40.80.7

us-gaap:USGovernmentAgenciesDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value7894104159166172267323
Percentage of CashCashEquivalentsandAvailableforsaleDebtSecuritiesExcludingTimeDeposits7.18.09.013.711.97.111.713.8

us-gaap:USTreasurySecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value196247230207187879288407
Percentage of CashCashEquivalentsandAvailableforsaleDebtSecuritiesExcludingTimeDeposits17.821.019.817.913.436.012.617.3

klac:CashCashEquivalentsandAvailableforsaleDebtSecuritiesExcludingTimeDepositsAmortizedCost



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value11041178116111611399244922982366
Percentage of CashCashEquivalentsandAvailableforsaleDebtSecuritiesExcludingTimeDepositsAmortizedCost100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BalanceSheetLocation

us-gaap:CashAndCashEquivalents



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value50152748453664515891181930
Percentage of CashCashEquivalentsandAvailableforsaleDebtSecuritiesExcludingTimeDepositsAmortizedCost45.444.741.746.246.164.951.439.3

us-gaap:FinancialInstrument

klac:MoneyMarketBankDepositsAndOther



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value4154353993525928771118863
Percentage of CashCashEquivalentsandAvailableforsaleDebtSecuritiesExcludingTimeDepositsAmortizedCost37.737.034.330.442.335.848.636.5

us-gaap:CorporateDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value389385419433441505600747
Percentage of CashCashEquivalentsandAvailableforsaleDebtSecuritiesExcludingTimeDepositsAmortizedCost35.332.736.137.331.520.626.131.6

us-gaap:MunicipalBonds



Period End2020-03-312019-12-312019-09-302019-06-30
Value19911
Percentage of CashCashEquivalentsandAvailableforsaleDebtSecuritiesExcludingTimeDepositsAmortizedCost1.80.80.20.2

us-gaap:SovereignDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value666611111717
Percentage of CashCashEquivalentsandAvailableforsaleDebtSecuritiesExcludingTimeDepositsAmortizedCost0.50.50.50.50.80.40.80.7

us-gaap:USGovernmentAgenciesDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value7894104159166174269326
Percentage of CashCashEquivalentsandAvailableforsaleDebtSecuritiesExcludingTimeDepositsAmortizedCost7.18.09.013.711.97.111.713.8

us-gaap:USTreasurySecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value194247230208188881292411
Percentage of CashCashEquivalentsandAvailableforsaleDebtSecuritiesExcludingTimeDepositsAmortizedCost17.621.019.817.913.536.012.717.4

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

klac:CashEquivalentsAndMarketableSecuritiesFairValueDisclosure

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value674753714635945126116341527
Percentage of CashEquivalentsAndMarketableSecuritiesFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value4294254475244501179652824
Percentage of CashEquivalentsAndMarketableSecuritiesFairValueDisclosure63.756.562.682.647.693.539.954.0

us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value11041179116211601395244122862352
Percentage of CashEquivalentsAndMarketableSecuritiesFairValueDisclosure163.7156.5162.6182.6147.6193.5139.9154.0

klac:ContractWithCustomerLiabilityCurrentServiceRevenue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value21420420120618216816669
Percentage of ContractWithCustomerLiabilityCurrentServiceRevenue100.0100.0100.0100.0100.0100.0100.0100.0

klac:ContractWithCustomerLiabilityCurrentSystemRevenue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value3362472772822281962160
Percentage of ContractWithCustomerLiabilityCurrentSystemRevenue100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:CreditFacility, us-gaap:LongtermDebtType

klac:DebtInstrumentCovenantComplianceMaximumLeverageRatio

us-gaap:RevolvingCreditFacility, us-gaap:LineOfCredit



Period End2020-03-312017-11-30
Value3.53.0
Percentage of DebtInstrumentCovenantComplianceMaximumLeverageRatio100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

klac:ExecutiveDeferredSavingsPlan

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value148166158158153137146143
Percentage of ExecutiveDeferredSavingsPlan100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value3950474949435653
Percentage of ExecutiveDeferredSavingsPlan26.430.130.231.432.431.938.937.4

us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value187216206207203181203197
Percentage of ExecutiveDeferredSavingsPlan126.4130.1130.2131.4132.4131.9138.9137.4

klac:FiniteLivedIntangibleAssetsAccumulatedAmortizationAndOtherAccumulatedAdjustment



Period End2020-03-312019-12-312019-06-30
Value476422307
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortizationAndOtherAccumulatedAdjustment100.0100.0100.0

us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass

klac:IndefiniteLivedIntangibleAssetsExcludingGoodwillNetOfOtherAccumulatedAdjustment

us-gaap:InProcessResearchAndDevelopment



Period End2020-03-312019-12-312019-06-30
Value175190187
Percentage of IndefiniteLivedIntangibleAssetsExcludingGoodwillNetOfOtherAccumulatedAdjustment100.0100.0100.0

us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass

klac:IntangibleAssetsOtherAccumulatedAdjustments

us-gaap:InProcessResearchAndDevelopment



Period End2020-03-312019-12-312019-06-30
Value100000.0100000.00.0
Percentage of IntangibleAssetsOtherAccumulatedAdjustments100.0100.00.0

klac:OtherCurrentAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-30
Value261822181910201412111013142289871171217106132015172017151629242025282843
Percentage of OtherCurrentAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

klac:OtherNonCurrentAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-30
Value545756585622211919191313121213121314151531321623171516181820212123242526281011
Percentage of OtherNonCurrentAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

klac:OtherNoncurrentLiabilities1



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value14414212911611737333233302931292634364147475758604348
Percentage of OtherNoncurrentLiabilities1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

klac:StockBasedCompensationCapitalizedAsInventory



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-06-30
Value55444444432222222333335888888887777666
Percentage of StockBasedCompensationCapitalizedAsInventory100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccountsReceivableGrossCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-30
Value1131120210781002970669613663672752678592756685676634646448482607653653465514579595462546476628559723660566484605588553471
Percentage of AccountsReceivableGrossCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedIncomeTaxesNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-30
Value3833683583923903413483713823557168615754506165626966646159596258595954525041383778686253
Percentage of AccruedIncomeTaxesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedMarketingCostsCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-06-30
Value1241641501331481441191161091161229584798081103899393919279
Percentage of AccruedMarketingCostsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-30
Value111111121211111111111121212121212121212121212121212122222222222222222222222231
Percentage of AllowanceForDoubtfulAccountsReceivableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrument, us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation, us-gaap:UnderlyingAssetClass

us-gaap:AociLossCashFlowHedgeCumulativeGainLossAfterTax

klac:InterestRatePriorToExpectedDebtIssuances, us-gaap:TreasuryLock, us-gaap:CashFlowHedging, us-gaap:DesignatedAsHedgingInstrument, us-gaap:SeniorNotes



Period End2020-03-31
Value12
Percentage of AociLossCashFlowHedgeCumulativeGainLossAfterTax100.0

klac:PortionofSeniorNotes, us-gaap:TreasuryLock, us-gaap:CashFlowHedging, us-gaap:DesignatedAsHedgingInstrument, us-gaap:SeniorNotes



Period End2020-03-31
Value3
Percentage of AociLossCashFlowHedgeCumulativeGainLossAfterTax28.2

klac:SeniorNotesDueMarch12050, us-gaap:TreasuryLock, us-gaap:CashFlowHedging, us-gaap:DesignatedAsHedgingInstrument, us-gaap:SeniorNotes



Period End2020-03-31
Value21
Percentage of AociLossCashFlowHedgeCumulativeGainLossAfterTax173.4

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:AssetsFairValueDisclosure

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value8239208727931098139917811670
Percentage of AssetsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value4794794985765041225718883
Percentage of AssetsFairValueDisclosure58.252.157.272.745.987.640.452.9

us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value13021399137113701603262425002554
Percentage of AssetsFairValueDisclosure158.2152.1157.2172.7145.9187.6140.4152.9

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value30000000
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value3001481114
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value68873676372480990811421489
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value68873776372380590011301475
Percentage of AvailableForSaleSecuritiesDebtSecurities100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtSecuritiesCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value68873776372380590011301475
Percentage of AvailableForSaleSecuritiesDebtSecuritiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationContingentConsiderationLiability

klac:ThreePrivatelyHeldCompanies



Period End2020-03-312019-06-302019-03-31
Value254
Percentage of BusinessCombinationContingentConsiderationLiability100.0100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value161519141323
Percentage of BusinessCombinationContingentConsiderationLiability620.90.00.0274.6288.30.00.0

us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value161519141323
Percentage of BusinessCombinationContingentConsiderationLiability620.90.00.0274.6288.30.00.0

us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationContingentConsiderationLiabilityCurrent

klac:Orbotech



Period End2020-03-312019-09-302019-02-20
Value244
Percentage of BusinessCombinationContingentConsiderationLiabilityCurrent100.0100.0100.0

klac:ThreePrivatelyHeldCompanies



Period End2020-03-31
Value200000.0
Percentage of BusinessCombinationContingentConsiderationLiabilityCurrent8.3

us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationContingentConsiderationLiabilityNoncurrent

klac:Orbotech



Period End2020-03-312019-12-312019-09-302019-02-20
Value77711
Percentage of BusinessCombinationContingentConsiderationLiabilityNoncurrent100.0100.0100.0100.0

klac:PrivatelyHeldCompany



Period End2020-03-312019-12-312019-08-22
Value999
Percentage of BusinessCombinationContingentConsiderationLiabilityNoncurrent131.1128.80.0

klac:ThreePrivatelyHeldCompanies



Period End2020-03-312019-12-312019-09-30
Value225
Percentage of BusinessCombinationContingentConsiderationLiabilityNoncurrent32.434.268.8

klac:TwoPrivatelyHeldCompanies



Period End2020-03-312019-12-312019-09-30
Value001
Percentage of BusinessCombinationContingentConsiderationLiabilityNoncurrent9.59.622.1

us-gaap:CapitalizedContractCostNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value735565704832470
Percentage of CapitalizedContractCostNet100.0100.0100.0100.0100.0100.0100.00.0

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

us-gaap:CashAndCashEquivalentsFairValueDisclosure

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring, klac:MoneyMarketBankDepositsAndOther



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value4154353993525928771118863
Percentage of CashAndCashEquivalentsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:CorporateDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302018-06-30
Value103104
Percentage of CashAndCashEquivalentsFairValueDisclosure0.40.21.03.10.6

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



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value075550668171
Percentage of CashAndCashEquivalentsFairValueDisclosure0.01.71.515.80.076.11.60.2

us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

us-gaap:FairValueMeasurementsRecurring, klac:MoneyMarketBankDepositsAndOther



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value4154353993525928771118863
Percentage of CashAndCashEquivalentsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueMeasurementsRecurring, us-gaap:CorporateDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302018-06-30
Value103104
Percentage of CashAndCashEquivalentsFairValueDisclosure0.40.21.03.10.6

us-gaap:FairValueMeasurementsRecurring, us-gaap:USTreasurySecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value075550668171
Percentage of CashAndCashEquivalentsFairValueDisclosure0.01.71.515.80.076.11.60.2

us-gaap:CommonStocksIncludingAdditionalPaidInCapital



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-06-30
Value2019201719992017198961959661756154851852949348344745242441638547453461312351220120611931159
Percentage of CommonStocksIncludingAdditionalPaidInCapital100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConstructionInProgressGross



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-06-302013-06-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-30
Value7963562627161597764665543438161112786442
Percentage of ConstructionInProgressGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerAssetNetCurrent



Period End2020-03-312019-12-312019-09-302019-07-012019-06-302019-03-312018-12-312018-09-302018-07-012018-06-30
Value9185999494912315140
Percentage of ContractWithCustomerAssetNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:ContractWithCustomerLiability



Period End2020-03-312019-12-312019-09-302019-07-012019-06-302019-03-312018-12-312018-09-302018-07-01
Value650551579587587501455463556
Percentage of ContractWithCustomerLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerLiabilityNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value100991019890908071
Percentage of ContractWithCustomerLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrumentCarryingAmount



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-06-30
Value3475342534503450345022502250225024752500279029462971299630363076311631513171321132403250750
Percentage of DebtInstrumentCarryingAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CreditFacility, us-gaap:LongtermDebtType

us-gaap:RevolvingCreditFacility, us-gaap:LineOfCredit



Period End2020-03-312019-12-312019-06-302018-03-312017-12-312017-06-30
Value2522502252500
Percentage of DebtInstrumentCarryingAmount0.76.60.09.110.00.0

us-gaap:DebtInstrument, us-gaap:LongtermDebtType

klac:SeniorNotesDueMarch12050, us-gaap:SeniorNotes



Period End2020-03-312019-06-30
Value7500
Percentage of DebtInstrumentCarryingAmount21.60.0

klac:SeniorNotesDueMarch152029, us-gaap:SeniorNotes



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-06-30
Value8008008008008000
Percentage of DebtInstrumentCarryingAmount23.023.423.223.223.20.0

klac:SeniorNotesDueMarch152049, us-gaap:SeniorNotes



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-06-30
Value4004004004004000
Percentage of DebtInstrumentCarryingAmount11.511.711.611.611.60.0

klac:SeniorNotesDueNovember12019, us-gaap:SeniorNotes



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-06-30
Value002502502502502502502502502502502502502502502502502502502502500
Percentage of DebtInstrumentCarryingAmount0.00.07.27.27.211.111.111.110.110.09.08.58.48.38.28.18.07.97.97.87.77.70.0

klac:SeniorNotesDueNovember12021, us-gaap:SeniorNotes



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-06-30
Value05005005005005005005005005005005005005005005005005005005005005000
Percentage of DebtInstrumentCarryingAmount0.014.614.514.514.522.222.222.220.220.017.917.016.816.716.516.316.015.915.815.615.415.40.0

klac:SeniorNotesDueNovember12024, us-gaap:SeniorNotes



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-06-30
Value12501250125012501250125012501250125012501250125012501250125012501250125012501250125012500
Percentage of DebtInstrumentCarryingAmount36.036.536.236.236.255.655.655.650.550.044.842.442.141.741.240.640.139.739.438.938.638.50.0

klac:SeniorNotesDueNovember12034, us-gaap:SeniorNotes



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-06-30
Value2502502502502502502502502502502502502502502502502502502502502502500
Percentage of DebtInstrumentCarryingAmount7.27.37.27.27.211.111.111.110.110.09.08.58.48.38.28.18.07.97.97.87.77.70.0

us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:DebtInstrumentFaceAmount

klac:SeniorNotesDueMarch12050, us-gaap:SeniorNotes



Period End2020-02-29
Value750
Percentage of DebtInstrumentFaceAmount100.0

us-gaap:LongtermDebtType

us-gaap:DebtInstrumentFairValue

us-gaap:SeniorNotes



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-06-30
Value3680356038203700361023002310233023502410268026702630262027102680256025202520252026002600893
Percentage of DebtInstrumentFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CreditFacility, us-gaap:LongtermDebtType

us-gaap:DebtInstrumentInterestRateEffectivePercentage

us-gaap:RevolvingCreditFacility, us-gaap:LineOfCredit



Period End2020-03-312019-12-312018-03-312017-12-312017-06-30
Value0.02740.02840.029130.026340.0
Percentage of DebtInstrumentInterestRateEffectivePercentage100.0100.0100.0100.00.0

us-gaap:DebtInstrument, us-gaap:LongtermDebtType

klac:SeniorNotesDueMarch12050, us-gaap:SeniorNotes



Period End2020-03-312019-06-30
Value0.033020.0
Percentage of DebtInstrumentInterestRateEffectivePercentage120.50.0

klac:SeniorNotesDueMarch152029, us-gaap:SeniorNotes



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-06-30
Value0.041590.041590.041590.041590.041590.0
Percentage of DebtInstrumentInterestRateEffectivePercentage151.8146.40.00.00.00.0

klac:SeniorNotesDueMarch152049, us-gaap:SeniorNotes



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-06-30
Value0.050470.050470.050470.050470.050470.0
Percentage of DebtInstrumentInterestRateEffectivePercentage184.2177.70.00.00.00.0

klac:SeniorNotesDueNovember12019, us-gaap:SeniorNotes



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value0.00.00.033770.033770.033770.033770.033770.033770.033770.033770.033770.033770.033770.033770.033770.033770.033770.033770.033770.033770.033770.03377
Percentage of DebtInstrumentInterestRateEffectivePercentage0.00.00.00.00.00.00.00.0115.9128.20.00.00.00.00.00.00.00.00.00.00.00.0

klac:SeniorNotesDueNovember12021, us-gaap:SeniorNotes



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value0.00.041280.041280.041280.041280.041280.041280.041280.041280.041280.041280.041280.041280.041280.041280.041280.041280.041280.041280.041280.041280.04128
Percentage of DebtInstrumentInterestRateEffectivePercentage0.0145.40.00.00.00.00.00.0141.7156.70.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:DebtInstrumentUnamortizedDiscount



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-06-30
Value88888222222233333333332
Percentage of DebtInstrumentUnamortizedDiscount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrument, us-gaap:LongtermDebtType

klac:SeniorNotesDueMarch12050, us-gaap:SeniorNotes



Period End2020-02-29
Value300000.0
Percentage of DebtInstrumentUnamortizedDiscount0.0

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPosition



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value3202164315937588901046
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPosition100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancialInstrument

us-gaap:CorporateDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value30488182321397497518
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPosition95.140.842.454.352.355.949.6

us-gaap:MunicipalBonds



Period End2020-03-312019-12-31
Value23
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPosition0.91.7

us-gaap:USGovernmentAgenciesDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value103779126163169238
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPosition3.317.218.321.321.519.122.8

us-gaap:USTreasurySecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value287167142187211271
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPosition0.640.438.824.124.723.826.0

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value30014811
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancialInstrument

us-gaap:CorporateDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value3000245
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss99.537.626.347.250.656.450.8

us-gaap:MunicipalBonds



Period End2020-03-312019-12-31
Value9000.03000.0
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss0.33.5

us-gaap:USGovernmentAgenciesDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value0000012
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss0.215.316.919.618.917.319.5

us-gaap:USTreasurySecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value0000123
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss0.043.556.132.629.325.128.5

us-gaap:DeferredCompensationPlanAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-30
Value187216206207203181203197194192187182178173174162158161157165167166161159156155147136137132132125130122115128129125109
Percentage of DeferredCompensationPlanAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredFinanceCostsNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-06-30
Value2216171718991010101212131314151517
Percentage of DeferredFinanceCostsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxAssetsNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value207213216206205225222193193193282291258259267302
Percentage of DeferredIncomeTaxAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxLiabilitiesNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-06-30
Value6476806887027621
Percentage of DeferredIncomeTaxLiabilitiesNet100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPensionPlanLiabilitiesCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-06-30
Value189217207208204181203199196192187183179174175162159163160167169167162160156155148137138132132125130121115128109
Percentage of DefinedBenefitPensionPlanLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPensionPlanLiabilitiesNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-06-30
Value8079807967676666787474726966716956535555545457595857595753
Percentage of DefinedBenefitPensionPlanLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeAssetFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-06-30
Value9211308304345100010
Percentage of DerivativeAssetFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeAssetNotOffsetPolicyElectionDeduction



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-06-30
Value002110111011130012
Percentage of DerivativeAssetNotOffsetPolicyElectionDeduction100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value103324195244561301211351150
Percentage of DerivativeAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value103324195
Percentage of DerivativeAssets100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value103324195
Percentage of DerivativeAssets100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeFairValueOfDerivativeAsset



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302010-12-312010-06-30
Value103324195244561301211351150251420
Percentage of DerivativeFairValueOfDerivativeAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BalanceSheetLocation

us-gaap:OtherCurrentAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-06-30
Value103324195244561301211351150251446111
Percentage of DerivativeFairValueOfDerivativeAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.00.0

us-gaap:BalanceSheetLocation, us-gaap:HedgingDesignation

us-gaap:OtherCurrentAssets, us-gaap:DesignatedAsHedgingInstrument



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value010010431112110000001132003001200
Percentage of DerivativeFairValueOfDerivativeAsset5.742.216.915.546.15.949.364.650.428.442.737.130.675.482.531.217.949.740.456.217.833.043.518.017.357.323.89.00.00.00.00.0

us-gaap:OtherCurrentAssets, us-gaap:Nondesignated



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value91322151132343001001473022032301
Percentage of DerivativeFairValueOfDerivativeAsset94.357.883.184.553.994.150.735.449.671.657.362.969.424.617.568.882.150.359.643.882.267.056.582.082.742.776.291.00.00.00.00.0

us-gaap:DerivativeFairValueOfDerivativeLiability



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302010-12-312010-06-30
Value01231141640111471154533110001245
Percentage of DerivativeFairValueOfDerivativeLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BalanceSheetLocation

us-gaap:OtherCurrentLiabilities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-06-30
Value01231141640111471154533110002
Percentage of DerivativeFairValueOfDerivativeLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BalanceSheetLocation, us-gaap:HedgingDesignation

us-gaap:OtherCurrentLiabilities, us-gaap:DesignatedAsHedgingInstrument



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-06-30
Value0002011050000003421212000000
Percentage of DerivativeFairValueOfDerivativeLiability34.90.130.962.914.081.011.480.119.830.40.05.623.812.140.640.738.624.752.161.857.025.346.511.112.00.417.7

us-gaap:OtherCurrentLiabilities, us-gaap:Nondesignated



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-06-30
Value011112113011134633211100001
Percentage of DerivativeFairValueOfDerivativeLiability65.199.969.137.186.019.088.619.980.269.6100.094.476.287.959.459.361.475.347.938.243.074.753.588.988.099.682.3

us-gaap:DerivativeLiabilities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value01231141640111471154533110
Percentage of DerivativeLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value012311416
Percentage of DerivativeLiabilities100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value012311416
Percentage of DerivativeLiabilities100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeLiabilityFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-06-30
Value00010130420000071040
Percentage of DerivativeLiabilityFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection100.0100.0100.0100.0100.0100.00.0100.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeLiabilityNotOffsetPolicyElectionDeduction



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-06-30
Value002110111011130012
Percentage of DerivativeLiabilityNotOffsetPolicyElectionDeduction100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrument, us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation, us-gaap:UnderlyingAssetClass

us-gaap:DerivativeNotionalAmount

klac:SeniorNotesDueMarch12050, us-gaap:TreasuryLock, us-gaap:CashFlowHedging, us-gaap:DesignatedAsHedgingInstrument, us-gaap:SeniorNotes



Period End2020-01-31
Value350
Percentage of DerivativeNotionalAmount100.0

us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation, us-gaap:Position

us-gaap:ForeignExchangeForward, us-gaap:DesignatedAsHedgingInstrument, us-gaap:Long



Period End2020-03-312019-12-312019-09-302019-06-30
Value242301228257
Percentage of DerivativeNotionalAmount0.00.00.00.0

us-gaap:ForeignExchangeForward, us-gaap:DesignatedAsHedgingInstrument, us-gaap:Short



Period End2020-03-312019-12-312019-09-302019-06-30
Value312323280273
Percentage of DerivativeNotionalAmount0.00.00.00.0

us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation, us-gaap:Position

us-gaap:CashFlowHedging, us-gaap:DesignatedAsHedgingInstrument, us-gaap:Long



Period End2020-03-312019-12-312019-09-302019-06-30
Value36122631
Percentage of DerivativeNotionalAmount0.00.00.00.0

us-gaap:CashFlowHedging, us-gaap:DesignatedAsHedgingInstrument, us-gaap:Short



Period End2020-03-312019-12-312019-09-302019-06-30
Value9174117113
Percentage of DerivativeNotionalAmount0.00.00.00.0

us-gaap:AwardType, us-gaap:Dividends

us-gaap:DividendsPayableCurrentAndNoncurrent

klac:RestrictedStockUnitPerformanceBasedAndServiceBased, klac:RegularCashDividend



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value876765465444332211100000
Percentage of DividendsPayableCurrentAndNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:EmployeeRelatedLiabilitiesCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-30
Value287326311226246230243177182222241172145137179224180130162196170130163203188154156195167138130175154127123186284245268
Percentage of EmployeeRelatedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-30
Value476421365307248222221219218217216215214213213269268267265279275271267263259255252247243238233227220212205197189181164
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsByMajorClass

klac:ExistingTechnology



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-30
Value3052682321961611461451441431421411401391391381381371371361341321301281261241221201191171151131101061029894898575
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization64.163.763.664.065.165.665.665.665.665.565.365.265.165.065.051.251.351.351.448.248.148.148.048.048.048.048.048.148.248.448.548.548.448.248.147.747.447.046.0

klac:TradeNameTrademark



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-30
Value353228252120202020191919191919191919191818181717171616151515141414131312121211
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization7.57.67.88.28.79.09.19.19.19.29.29.29.39.39.37.37.37.37.26.86.76.76.66.66.66.56.56.46.46.46.36.36.46.46.56.56.66.76.8

us-gaap:CustomerRelationships



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-30
Value908274665955555555555454545454545353525151504948484746454342403938363533323027
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization19.019.620.421.624.024.925.025.125.225.325.425.525.625.725.720.120.019.819.718.518.518.518.518.518.618.618.518.318.017.817.517.417.317.217.117.016.916.916.8

us-gaap:OtherIntangibleAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value443830195100
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization9.49.18.26.22.10.50.40.2

us-gaap:FiniteLivedIntangibleAssetsGross



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-30
Value17381723172316801759246246239234234234234216216216274274274274291291291291291291282282282282282282283283283283283283283281
Percentage of FiniteLivedIntangibleAssetsGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsByMajorClass

klac:ExistingTechnology



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-30
Value12661251125112241238166166160157157157157141141141141141141141141141141141141141133133133133133133134134134134134134134133
Percentage of FiniteLivedIntangibleAssetsGross72.872.672.672.970.467.467.467.367.167.167.167.165.465.465.451.751.751.751.748.648.648.648.648.648.647.447.447.447.447.447.447.547.547.547.547.547.547.547.2

klac:TradeNameTrademark



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-30
Value11711711711411521212020202020191919191919191919191919191919191919191919191919191919
Percentage of FiniteLivedIntangibleAssetsGross6.76.86.86.86.68.68.68.89.09.09.09.09.29.29.27.37.37.37.36.86.86.86.86.86.87.17.17.17.17.17.17.07.07.07.07.07.07.07.1

us-gaap:CustomerRelationships



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-30
Value30530530529737058585655555555545454545454545454545454545454545454545454545454545454
Percentage of FiniteLivedIntangibleAssetsGross17.517.717.717.721.123.623.623.723.823.823.823.825.425.425.420.120.120.120.118.918.918.818.818.818.819.419.419.419.419.419.419.419.419.419.419.419.419.419.5

us-gaap:OtherIntangibleAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value5050504335110
Percentage of FiniteLivedIntangibleAssetsGross2.92.92.92.62.00.50.50.3

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

us-gaap:ForeignCurrencyContractAssetFairValueDisclosure

us-gaap:OtherCurrentAssets, us-gaap:ForeignExchangeContract, us-gaap:DesignatedAsHedgingInstrument



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-06-30
Value010010132
Percentage of ForeignCurrencyContractAssetFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherCurrentAssets, us-gaap:ForeignExchangeContract, us-gaap:Nondesignated



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-06-30
Value913221513
Percentage of ForeignCurrencyContractAssetFairValueDisclosure1656.7136.8493.4544.1117.01598.0272.758.5169.8

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

us-gaap:ForeignCurrencyContractsLiabilityFairValueDisclosure

us-gaap:OtherCurrentLiabilities, us-gaap:ForeignExchangeContract, us-gaap:DesignatedAsHedgingInstrument



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-06-30
Value000200000
Percentage of ForeignCurrencyContractsLiabilityFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherCurrentLiabilities, us-gaap:ForeignExchangeContract, us-gaap:Nondesignated



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-06-30
Value011112111
Percentage of ForeignCurrencyContractsLiabilityFairValueDisclosure186.7175800.0223.959.0615.0418.2776.1435.31670.8

us-gaap:FurnitureAndFixturesGross



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-06-302013-06-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-30
Value303429282822222221212121212121212121212120201919212019192223
Percentage of FurnitureAndFixturesGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass

us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill

us-gaap:InProcessResearchAndDevelopment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-06-30
Value1751901901871830
Percentage of IndefiniteLivedIntangibleAssetsExcludingGoodwill100.0100.0100.0100.0100.00.0

us-gaap:IntangibleAssetsGrossExcludingGoodwill



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-06-30
Value19141914191418671943239
Percentage of IntangibleAssetsGrossExcludingGoodwill100.0100.0100.0100.0100.0100.0

us-gaap:InterestAndDividendsPayableCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-30
Value343144314416421642174619461946194619461944192182182182182182182182188
Percentage of InterestAndDividendsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestBearingDepositsInBanks



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-06-30
Value85858599544825545033493935303077646731292421273331192043535956626973456538
Percentage of InterestBearingDepositsInBanks100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InventoryRawMaterials



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-30
Value449450449444466340349331293248248240209197207208209226221194226253218221241229254229229273276234220212230235216197123
Percentage of InventoryRawMaterials100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InventoryWorkInProcess



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-30
Value32431928728531430529728026023721019319718218818721318616315615314217917117817617017617212914217017819515813113312095
Percentage of InventoryWorkInProcess100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:InvestmentsFairValueDisclosure

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring, us-gaap:USGovernmentAgenciesDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value7894102131166172245299
Percentage of InvestmentsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring, us-gaap:USTreasurySecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value179222212151187211271364
Percentage of InvestmentsFairValueDisclosure228.7235.2206.9115.7112.6122.6110.7121.7

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:CorporateDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value385385416422439500595735
Percentage of InvestmentsFairValueDisclosure489.5406.4404.9321.7264.5290.0242.7245.5

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:SovereignDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value666510101717
Percentage of InvestmentsFairValueDisclosure7.76.35.84.66.66.37.05.7

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:USGovernmentAgenciesDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value000000016
Percentage of InvestmentsFairValueDisclosure0.00.00.00.00.00.00.05.5

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



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value161611000041
Percentage of InvestmentsFairValueDisclosure21.617.811.50.00.00.00.013.7

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument

us-gaap:FairValueInputsLevel2, us-gaap:MunicipalBonds



Period End2020-03-312019-12-312019-09-302019-06-30
Value19911
Percentage of InvestmentsFairValueDisclosure25.09.71.91.5

us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

us-gaap:FairValueMeasurementsRecurring, us-gaap:CorporateDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value385385416422439500595735
Percentage of InvestmentsFairValueDisclosure489.5406.4404.9321.7264.5290.0242.7245.5

us-gaap:FairValueMeasurementsRecurring, us-gaap:SovereignDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value666510101717
Percentage of InvestmentsFairValueDisclosure7.76.35.84.66.66.37.05.7

us-gaap:FairValueMeasurementsRecurring, us-gaap:USGovernmentAgenciesDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value7894102131166172245316
Percentage of InvestmentsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0105.5

us-gaap:FairValueMeasurementsRecurring, us-gaap:USTreasurySecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value196239224151187211271405
Percentage of InvestmentsFairValueDisclosure250.3253.0218.3115.7112.6122.6110.7135.4

us-gaap:FinancialInstrument

us-gaap:MunicipalBonds



Period End2020-03-312019-12-312019-09-302019-06-30
Value19911
Percentage of InvestmentsFairValueDisclosure25.09.71.91.5

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:LiabilitiesFairValueDisclosure

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value012311416
Percentage of LiabilitiesFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value222228222223
Percentage of LiabilitiesFairValueDisclosure2510.41263.51052.5684.01246.717.7222.7

us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value23233026241646
Percentage of LiabilitiesFairValueDisclosure2610.41363.51152.5784.01346.7117.7322.7100.0

us-gaap:OperatingLeaseLiability



Period End2020-03-312019-12-312019-09-30
Value96102104
Percentage of OperatingLeaseLiability100.0100.0100.0

us-gaap:OtherInventoriesSpareParts



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-30
Value340337336328337275265253250248240245240238245234230221212209203213216203197193182180193211213197195172155148142137131
Percentage of OtherInventoriesSpareParts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PrepaidExpenseCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-30
Value717380887648574747464336333338373938363744413735323337314043405350565261433839
Percentage of PrepaidExpenseCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PrepaidTaxes



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-06-30
Value3625155134123237122476657253922
Percentage of PrepaidTaxes100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AwardType, us-gaap:PlanName

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber

us-gaap:RestrictedStockUnitsRSU, klac:TwoThousandFourPlan



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-06-302014-06-30
Value222221121112111123
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AwardType, us-gaap:PlanName

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

us-gaap:RestrictedStockUnitsRSU, klac:TwoThousandFourPlan



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-06-302014-06-30
Value103.98104.68101.8591.8493.4688.4888.2176.574.2674.1373.2368.2463.6563.0461.2856.4149.3638.95
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-06-302009-06-302008-06-30
Value1010101111153344445556666777788856666777711111579
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AwardType, us-gaap:PlanName

klac:RestrictedStockUnitPerformanceBasedAndServiceBased, klac:TwoThousandFourPlan



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-06-302015-06-30
Value200000.0200000.0200000.0700000.0600000.0200000.0200000.0200000.0200000.0200000.0200000.042000.042000.042000.0300000.0300000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant1.81.91.86.05.11.36.65.44.84.84.80.90.80.84.43.8

us-gaap:RestrictedStockUnitsRSU, klac:AssumedEquityPlans



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312019-02-20
Value234734.0290178.0432372.0465587.0482317.0518971.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant2.22.74.04.04.10.0

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-06-302016-06-30
Value232526872679267728851597156716201326689
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-06-30
Value-88-66-71-73-68-70-56-53-54-52-50-51-48
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-3.8-2.5-2.7-2.7-2.4-4.4-3.6-3.30.00.00.0-3.9-7.1

us-gaap:CommonStockIncludingAdditionalPaidInCapital



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-06-30
Value20192017199920171989619596617561548518529452
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest86.875.174.675.369.038.838.038.10.00.00.039.965.7

us-gaap:NoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-06-302016-06-30
Value171818183600000
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.80.70.70.71.30.00.00.00.00.0

us-gaap:Parent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-06-30
Value230726692661265928491597156716201370122514631326689
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest99.299.399.399.398.7100.0100.0100.00.00.00.0100.0100.0

us-gaap:RetainedEarnings



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-06-30
Value376719733714928104810271056862729996848284
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest16.226.727.426.732.265.665.565.20.00.00.064.041.3

us-gaap:UnsecuredLongTermDebt



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-06-302014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-30
Value34433399317431733172198822372237246124862524268027042729301830573173748747747747747747747747746746746746746746746746745
Percentage of UnsecuredLongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Line plots across dimensions of each concept

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService


us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical


us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems


us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments


us-gaap:GrossProfit us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments


us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents


us-gaap:StockholdersEquity us-gaap:StatementEquityComponents


us-gaap:NoncurrentAssets us-gaap:StatementGeographical


us-gaap:Goodwill us-gaap:ReportingUnit


us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass


us-gaap:StockholdersEquity us-gaap:StatementEquityComponents


us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents