CTSH


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

Table of contents



us-gaap:CommonStockValue

us-gaap:CommonStockSharesIssued

us-gaap:CommonStockSharesOutstanding
us-gaap:StatementEquityComponents

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

us-gaap:IncomeTaxExpenseBenefit
ctsh:OnetimeTransactionType

us-gaap:InterestExpense

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:NonoperatingIncomeExpense
us-gaap:ConsolidationItems
us-gaap:OperatingExpenses

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

us-gaap:OtherComprehensiveIncomeLossNetOfTax

us-gaap:OtherNonoperatingIncomeExpense

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

us-gaap:Revenues

us-gaap:SellingGeneralAndAdministrativeExpense

us-gaap:Assets

us-gaap:Liabilities

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:AssetsCurrent

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:ShortTermInvestments

us-gaap:AccountsReceivableNetCurrent

us-gaap:OtherAssetsCurrent

us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:PropertyPlantAndEquipmentNet
us-gaap:StatementGeographical

us-gaap:LongTermInvestments

us-gaap:Goodwill
us-gaap:StatementBusinessSegments

us-gaap:IntangibleAssetsNetExcludingGoodwill
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:DeferredTaxAssetsLiabilitiesNet

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OtherAssetsNoncurrent

us-gaap:AccountsPayableCurrent

us-gaap:AccruedIncomeTaxesCurrent

us-gaap:LiabilitiesCurrent

us-gaap:OperatingLeaseLiabilityCurrent

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

us-gaap:LongTermDebtNoncurrent

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:OperatingLeaseLiability

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:CommonStockValue

us-gaap:AdditionalPaidInCapital

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:DepreciationDepletionAndAmortization

us-gaap:IncreaseDecreaseInAccountsPayable

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:ShareBasedCompensation

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:DeferredTaxAssetsNet

us-gaap:UnrecognizedTaxBenefits

us-gaap:DeferredTaxAssetsValuationAllowance

ctsh:CapitalizedContractCostCostsCapitalized

ctsh:ContractWithCustomerAssetRevenueRecognizedButNotBilled

ctsh:ContractWithCustomerLiabilityAmountBilledButRevenueNotRecognized

ctsh:DistributionFromOurIndiaSubsidiaryGross
us-gaap:SubsequentEventType

ctsh:DistributionFromOurIndiaSubsidiaryNet
us-gaap:SubsequentEventType

ctsh:DistributionFromOurIndiaSubsidiaryTaxWithheld
us-gaap:SubsequentEventType

ctsh:EffectiveIncomeTaxRateReconciliationDiscreteTaxBenefitAmount
us-gaap:LitigationCase
ctsh:LitigationSettlementAmountAwardedFromOtherPartyActualDamages
us-gaap:LitigationCase, us-gaap:SubsequentEventType
us-gaap:LitigationCase
ctsh:LitigationSettlementAmountAwardedFromOtherPartyPunitiveDamages
us-gaap:LitigationCase, us-gaap:SubsequentEventType

us-gaap:AllowanceForDoubtfulAccountsReceivableWriteOffs

us-gaap:CapitalizedContractCostAmortization

us-gaap:CapitalizedContractCostImpairmentLoss

us-gaap:CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths

us-gaap:CommonStockDividendsPerShareDeclared
us-gaap:SubsequentEventType

us-gaap:ContractWithCustomerAssetReclassifiedToReceivable

us-gaap:ContractWithCustomerLiabilityRevenueRecognized

us-gaap:DepreciationAndAmortization
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation, us-gaap:IncomeStatementLocation
us-gaap:DerivativeGainLossOnDerivativeNet
us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation
us-gaap:DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet
us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation, us-gaap:IncomeStatementLocation

us-gaap:DividendsCommonStockCash
us-gaap:StatementEquityComponents

us-gaap:EffectOfExchangeRateOnCashAndCashEquivalents
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements

us-gaap:ForeignCurrencyTransactionGainLossBeforeTax

us-gaap:IncomeLossFromEquityMethodInvestments

us-gaap:IncreaseDecreaseInDeferredRevenue

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities

us-gaap:InvestmentIncomeInterestAndDividend
us-gaap:LitigationCase
us-gaap:LitigationSettlementAmountAwardedFromOtherParty
us-gaap:LitigationCase, us-gaap:SubsequentEventType
us-gaap:StatementEquityComponents
us-gaap:OciBeforeReclassificationsBeforeTaxAttributableToParent
us-gaap:StatementEquityComponents
us-gaap:OciBeforeReclassificationsNetOfTaxAttributableToParent

us-gaap:OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsTax
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossTaxPortionAttributableToParent1
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation
us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax

us-gaap:OtherNoncashIncomeExpense
us-gaap:RestructuringCostAndReserve
us-gaap:PaymentsForRestructuring
us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType
us-gaap:PaymentsToAcquireBusinessesGross

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired

us-gaap:PaymentsToAcquireEquityMethodInvestments

us-gaap:PaymentsToAcquireHeldToMaturitySecurities

us-gaap:PaymentsToAcquireOtherInvestments

us-gaap:ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities

us-gaap:ProceedsFromRepaymentsOfLinesOfCredit

us-gaap:ProceedsFromSaleAndMaturityOfOtherInvestments

us-gaap:ProvisionForDoubtfulAccounts
us-gaap:IncomeStatementLocation, us-gaap:StatementEquityComponents
us-gaap:ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent
us-gaap:IncomeStatementLocation, us-gaap:StatementEquityComponents
us-gaap:ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent
us-gaap:IncomeStatementLocation, us-gaap:StatementEquityComponents
us-gaap:ReclassificationFromAociCurrentPeriodTax

us-gaap:RepaymentsOfDebtAndCapitalLeaseObligations
us-gaap:IncomeStatementLocation
us-gaap:RestructuringAndRelatedCostIncurredCost
us-gaap:RestructuringCostAndReserve
us-gaap:RestructuringCostAndReserve, us-gaap:RestructuringPlan

us-gaap:RestructuringCharges
us-gaap:RestructuringCostAndReserve, us-gaap:RestructuringPlan
us-gaap:RestructuringReserveAcceleratedDepreciation
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation
us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents
us-gaap:StockRepurchasedAndRetiredDuringPeriodShares

us-gaap:StockRepurchasedAndRetiredDuringPeriodValue
us-gaap:StatementEquityComponents

us-gaap:UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment

ctsh:AccruedTravelAndEntertainmentCurrent

ctsh:AdjustmentToCurrentIncomeTaxBalanceAsAResultOfSettlement

ctsh:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNonDeductibleGoodwill
us-gaap:BusinessAcquisition

ctsh:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseRightOfUseAsset
us-gaap:BusinessAcquisition

ctsh:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipmentAndOtherNoncurrentAssets
us-gaap:BusinessAcquisition

ctsh:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedTaxDeductibleGoodwill
us-gaap:BusinessAcquisition

ctsh:CustomerVolumeandOtherIncentivesCurrent
us-gaap:BalanceSheetLocation
ctsh:DebtSecuritiesTimeDeposits

ctsh:DeferredIncomeTaxRelatedToMat

ctsh:DeferredTaxLiabilitiesDepreciationandAmortization
us-gaap:BalanceSheetLocation
ctsh:EquityandCostMethodInvestments
ctsh:OnetimeTransactionType, us-gaap:IncomeTaxAuthority, us-gaap:IncomeTaxAuthorityName
ctsh:IncomeTaxDisputedAmount

ctsh:LeaseLiability

ctsh:LeaseRightofUseAsset

ctsh:LesseeOperatingLeaseLeaseNotyetCommencedAmount
us-gaap:IncomeTaxAuthority, us-gaap:IncomeTaxAuthorityName
ctsh:RestrictedInvestmentsInitiallyDeposited

us-gaap:AccruedIncomeTaxesNoncurrent

us-gaap:AccruedLiabilitiesAndOtherLiabilities

us-gaap:AccruedProfessionalFeesCurrent
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship
us-gaap:AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax

us-gaap:AllowanceForDoubtfulAccountsReceivable
us-gaap:StatementEquityComponents
us-gaap:AociBeforeTaxAttributableToParent
us-gaap:StatementEquityComponents
us-gaap:AociTaxAttributableToParent
us-gaap:BalanceSheetLocation
us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis
us-gaap:BalanceSheetLocation
us-gaap:AvailableForSaleSecuritiesDebtSecurities
us-gaap:BalanceSheetLocation, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:BalanceSheetLocation, us-gaap:FairValueByMeasurementFrequency

us-gaap:BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh
us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationContingentConsiderationLiability
us-gaap:BalanceSheetLocation, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:BalanceSheetLocation, us-gaap:FairValueByMeasurementFrequency

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents
us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables
us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilities
us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisition, us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet
us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilities
us-gaap:BusinessAcquisition

us-gaap:CapitalizedComputerSoftwareAccumulatedAmortization

us-gaap:CapitalizedComputerSoftwareGross

us-gaap:CapitalizedContractCostNet
us-gaap:BalanceSheetLocation, us-gaap:CashAndCashEquivalents, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:CashAndCashEquivalentsFairValueDisclosure
us-gaap:BalanceSheetLocation, us-gaap:CashAndCashEquivalents, us-gaap:FairValueByMeasurementFrequency
us-gaap:CashAndCashEquivalents, us-gaap:FairValueByMeasurementFrequency

us-gaap:ContractWithCustomerAssetGross

us-gaap:ContractWithCustomerLiability

us-gaap:CostMethodInvestments
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtWeightedAverageInterestRate
us-gaap:DebtInstrument
us-gaap:DeferredFinanceCostsNet

us-gaap:DeferredIncomeTaxAssetsNet

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredRevenueCurrent

us-gaap:DeferredRevenueNoncurrent

us-gaap:DeferredTaxAssetsDeferredIncome

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards

us-gaap:DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits

us-gaap:DeferredTaxAssetsTaxDeferredExpenseOther

us-gaap:DeferredTaxLiabilitiesDeferredExpense

us-gaap:DeferredTaxLiabilitiesOther
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanFairValueOfPlanAssets
us-gaap:BalanceSheetLocation, us-gaap:IncomeTaxAuthority, us-gaap:IncomeTaxAuthorityName
us-gaap:DepositsAssets
us-gaap:IncomeTaxAuthority, us-gaap:IncomeTaxAuthorityName

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

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

us-gaap:DerivativeLiabilitiesCurrent
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation
us-gaap:DerivativeNotionalAmount
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation

us-gaap:EmployeeRelatedLiabilitiesCurrent
us-gaap:DeferredCompensationArrangementWithIndividualShareBasedPaymentsByTypeOfDeferredCompensation
us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized

us-gaap:EquityMethodInvestments
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue

us-gaap:FinanceLeaseLiabilityNoncurrent

us-gaap:FinanceLeaseRightOfUseAsset

us-gaap:FinanceLeaseRightOfUseAssetAccumulatedAmortization

us-gaap:FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:FiniteLivedIntangibleAssetsGross
us-gaap:BalanceSheetLocation, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:ForeignCurrencyContractAssetFairValueDisclosure
us-gaap:BalanceSheetLocation, us-gaap:FairValueByMeasurementFrequency
us-gaap:BalanceSheetLocation, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:ForeignCurrencyContractsLiabilityFairValueDisclosure
us-gaap:BalanceSheetLocation, us-gaap:FairValueByMeasurementFrequency
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
us-gaap:ForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAtFairValueNet
us-gaap:FinancialInstrument
us-gaap:HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue
us-gaap:BalanceSheetLocation
us-gaap:HeldToMaturitySecuritiesCurrent
us-gaap:FinancialInstrument, us-gaap:InvestmentType
us-gaap:InvestmentType
us-gaap:FinancialInstrument, us-gaap:InvestmentType
us-gaap:HeldToMaturitySecuritiesFairValue
us-gaap:InvestmentType

us-gaap:IndefiniteLivedTradeNames

us-gaap:InsuranceReceivableForMalpractice

us-gaap:IntangibleAssetsGrossExcludingGoodwill
us-gaap:BalanceSheetLocation, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:InvestmentType
us-gaap:InvestmentsFairValueDisclosure
us-gaap:BalanceSheetLocation, us-gaap:FairValueByMeasurementFrequency, us-gaap:InvestmentType

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths
us-gaap:CreditFacility, us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:LineOfCredit
us-gaap:CreditFacility
us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity
us-gaap:DebtInstrument
us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths
us-gaap:DebtInstrument
us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree
us-gaap:DebtInstrument
us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent
us-gaap:IncomeTaxAuthority
us-gaap:OperatingLossCarryforwards
us-gaap:RetirementPlanType
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent

us-gaap:PrepaidTaxes
us-gaap:BalanceSheetLocation
us-gaap:RestrictedInvestments
us-gaap:BalanceSheetLocation, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:BalanceSheetLocation, us-gaap:FairValueByMeasurementFrequency
us-gaap:RestructuringCostAndReserve
us-gaap:RestructuringReserveCurrent

us-gaap:RevenueRemainingPerformanceObligation

us-gaap:RevenueRemainingPerformanceObligationPercentage
us-gaap:DeferredCompensationArrangementWithIndividualShareBasedPaymentsByTypeOfDeferredCompensation
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
us-gaap:DeferredCompensationArrangementWithIndividualShareBasedPaymentsByTypeOfDeferredCompensation
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
us-gaap:DeferredCompensationArrangementWithIndividualShareBasedPaymentsByTypeOfDeferredCompensation
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
us-gaap:BalanceSheetLocation
us-gaap:TradingSecuritiesEquity
us-gaap:BalanceSheetLocation, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:BalanceSheetLocation, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency

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

Plots across concepts


IncomeStatement
Other Comprehensive Income Loss Net Of Tax
Expenses
Other Nonoperating Income Expense
Balance Sheet
Short Term Investments
Assets
Operating Lease Right Of Use Asset
Current Assets
Other Assets Current
NonCurrent Assets
Deferred Income Tax Assets Net
PropertyPlantAndEquipmentNet
Property Plant And Equipment Net
Liabilities
Operating Lease Liability
Current Liabilities
Accrued Income Taxes Current
Noncurrent Liabilities
Deferred Income Tax Liabilities Net
Stockholders Equity
Common Stock Value
Per Share
Common Stock Dividends Per Share Declared
CashFlow
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInOperatingActivities
Increase Decrease In Accounts Payable
NetCashProvidedByUsedInInvestingActivities
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInFinancingActivities
Net Cash Provided By Used In Financing Activities
Shares
Common Stock Shares Issued
DividendsAndRepurchase
Dividends Common Stock Cash
OperatingLeaseLiability
Operating Lease Liability Current
NonoperatingIncomeExpense
Nonoperating Income Expense
LesseeOperatingLeaseLiabilityPaymentsDue
Lessee Operating Lease Liability Payments Due Year Four

Tables

  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:CommonStockValue ▁▁▁▁▁▁▁▇▇▇▇▇▇▇▇▇▇▇▇████████████████▇▇██████5.05.05.05.05.05.05.06.06.06.06.06.06.06.06.06.06.06.06.06.16.16.16.16.16.16.16.0946.0896.0796.0846.0786.0486.0266.056.0345.9985.9866.0886.0626.0426.0726.0846.078NANANA5.944NANANA
us-gaap:CommonStockSharesIssued ▁▁▁▂▂▂▃▃▃▅▅▆▆▆▆▆▆███████████████▇█▇▇▇██▇███525.0528.0530.0539.0542.0541.0548.0550.0552.0569.0577.0580.0580.0586.0588.0590.0590.0607.0608.0606.6607.3606.2609.0608.0609.5610.5609.398608.911607.85608.445607.728604.738602.644604.97603.36599.88598.504608.846606.212604.168607.216608.42607.882NANANA594.462NANANA
us-gaap:CommonStockSharesOutstanding ▁▁▁▂▂▂▃▃▃▅▅▆▆▆▆▆▆███████████████▇█▇▇▇██▇███525.0528.0530.0539.0542.0541.0548.0550.0552.0569.0577.0580.0580.0586.0588.0590.0590.0607.0608.0606.6607.3606.2609.0608.0609.5610.5609.398608.911607.85608.445607.728604.738602.644604.97603.36599.88598.504608.846606.212604.168607.216608.42607.882NANANA594.462NANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding ▁█528.0531.0NA543.0541.0546.0NA551.0564.0575.0NA580.0586.0589.0NA592.0591.0607.0NA608.5608.8611.8NA612.7613.9613.9NA612.123612.162612.897610.856608.55608.892610.352NA606.264614.652618.416NA618.594622.954623.606NA619.238616.974613.328NANANANA
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic ▁█527.0530.0NA542.0541.0546.0NA551.0564.0573.0NA579.0585.0587.0NA590.0589.0605.0NA606.2606.1608.0NA608.8609.9609.6NA608.07607.88607.73605.746603.264603.34603.708NA598.116604.45606.856NA605.446607.978608.082NA603.434599.778595.77NANANANA
us-gaap:EarningsPerShareBasic ▇▇▅▅▅▅▆▇▇▆█▆▆▇▁▆▆▇▅▆▄▆▅▅▅▅▅▅▅▅▄▄▄▄▄▄▄▄▄▃▃▃▃▃▃▃▃▃▃▂0.970.950.60000000000000010.640.670.670.720.90.90.771.120.820.780.89-0.030.840.80.920.690.730.420.730.70.650.690.630.60.580.610.570.5350.530.50.470.4650.4650.4150.40.3950.3750.340.3450.340.340.2850.2550.2450.2350.240.195
us-gaap:EarningsPerShareDiluted ▇▇▅▅▅▅▆▇▇▆█▆▆▇▁▆▆▇▅▆▄▆▅▅▅▅▅▅▅▅▄▄▄▄▄▄▄▄▄▃▃▃▃▃▃▃▃▃▃▂0.970.950.58999999999999990.640.670.670.720.90.90.771.120.820.780.88-0.030.840.80.920.680.730.410.720.690.650.680.620.590.580.610.570.530.5250.4950.4650.460.4550.410.3950.390.3650.3350.3350.330.330.280.2450.2350.2250.2350.19
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
 TTM Greenblatt ROC _ _▇▇▅▆▅▆▇▇▆▆▇█▇▇▇▇▆▆▆▆▆▆▆▆▆▅▅▅▅▅▄▄▄▃▃▃▃▃▃▃▂▂▂▂▁▁▁696.0669.0465.0603.0467.0579.0626.0669.0619.0539.0693.0745.0670.0693.0657.0648.0606.0570.0561.0583.4590.9554.0553.4542.8545.5500.3479.408457.513487.921460.036447.841437.359426.803365.907356.253355.386331.958317.899308.143293.002269.958265.365244.621228.299205.915183.017166.908NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:ComprehensiveIncomeNetOfTax ▆▆▆▆▅▃▆▅▆▆█▅▄▆▁▆▆▇▅▆▃▆▅▅▅▅▅▄▅▆▅▄▃▄▃▆▂▅▁▂▄▃▃▄▂▃513.0476.0466.0496.0437.0141.0516.0408.0513.0481.0722.0383.0299.0514.08.0506.0520.0654.0357.0483.9218.3485.8430.5374.4448.9386.7363.447343.426427.733457.852423.162269.14184.239315.461229.139483.59948.522375.714-34.58699.801244.732212.679216.055250.488107.052175.266NANANANA
us-gaap:CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization █▆▅▅▄▆▆▅▄▄▃▂▁▁2863.02764.02662.02647.02615.02747.02749.02681.02629.02575.02540.02480.02417.02401.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments ▇▆▄▆▄▅▆▆▆▅█▆▆▇▇▆▆▆▅▆▆▆▅▅▅▅▄▄▅▄▄▄▄▃▃▃▃▃▃▂▂▂▂▂▁▁694.0665.0467.0624.0495.0510.0626.0658.0676.0583.0815.0662.0623.0697.0713.0658.0635.0649.0560.4612.9594.6589.1561.2543.0548.8510.6485.266463.739501.838473.188451.139439.198420.397377.183365.844364.383335.092322.277323.08287.964277.605280.5248.544243.276208.008178.752NANANANA
us-gaap:IncomeTaxExpenseBenefit ▃▂▂▃▂▂▂▂▂▂▂▃▂▂█▂▂▂▂▂▄▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁184.0160.0152.0276.0134.0142.0174.0160.0167.0142.0168.0185.0168.0177.0732.0164.0165.092.0145.8168.9342.4147.9137.8145.8128.7127.7122.409108.115129.93124.31126.807119.571119.98792.97487.06587.48283.1678.62682.95360.84569.5672.17342.37839.57735.83327.252NANANANA
us-gaap:InterestExpense ▃▃▃▆█▆▆▆▆▆▇▆▆▆▅▆▆▆▄▅▅▅▄▄▄▅▃▁▁▁2.02.03.06.09.06.06.07.06.07.08.06.07.06.05.06.06.06.04.44.94.65.14.34.34.15.02.1680.30.00.0NANANANANANANANANANANANANANANANANANANANA
us-gaap:NetIncomeLoss ▇▆▅▅▅▅▅▆▇▆█▆▆▇▁▆▆▇▆▆▄▆▆▅▆▅▅▅▅▅▅▅▄▄▄▄▄▄▄▄▃▃▃▃▃▃▃▃▃▂512.0505.0316.0348.0361.0367.0395.0497.0509.0441.0648.0477.0456.0520.0-18.0495.0470.0557.0416.0444.4252.4441.2423.4397.2420.1382.9362.857355.624371.908348.878324.332319.627300.41284.209278.779276.901251.932243.651240.127227.119208.045208.327206.166203.699172.175151.5144.004136.572141.255113.132
us-gaap:NonoperatingIncomeExpense ▄▄▄▅▅▁▄▃▆▅█▁▂▄▆▄▅▇▄▅▄▅▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄-2.0-4.02.021.028.0-69.00.0-11.057.044.0122.0-83.0-47.04.056.010.029.079.0-0.329.53.735.17.80.23.310.35.8586.22613.91713.1523.2981.839-6.40611.2769.5918.9973.1344.37814.937-5.0387.64715.1353.92314.9772.093-4.265NANANANA
 us-gaap:OperatingExpenses us-gaap:ConsolidationItems us-gaap:CorporateNonSegment▇▇▆█▅▄▃▃▄▅▁▄▅▃695.0671.0666.0736.0614.0574.0505.0521.0541.0606.0416.0534.0586.0507.0NA522.0508.0418.0NA495.8498.3505.2NA542.8516.2365.5NA326.8374.8373.5NANANANANANANANANANANANANANANANANANANANA
us-gaap:OperatingIncomeLoss ▇▇▅▆▅▆▇▇▇▆▇█▇▇▇▇▆▆▆▆▆▆▆▆▆▅▅▅▅▅▅▄▄▄▄▄▃▃▃▃▃▂▂▂▂▂▁▁▁▁696.0669.0465.0603.0467.0579.0626.0669.0619.0539.0693.0745.0670.0693.0657.0648.0606.0570.0561.0583.4590.9554.0553.4542.8545.5500.3479.408457.513487.921460.036447.841437.359426.803365.907356.253355.386331.958317.899308.143293.002269.958265.365244.621228.299205.915183.017166.908161.782151.67138.13
us-gaap:OtherComprehensiveIncomeLossNetOfTax █▁1.0-29.0NA148.076.0-226.0NA-89.04.040.074.0-94.0-157.0-6.026.011.050.097.0NANANANANANANANANANANANANANANA31.252-49.64206.698-203.41132.063-274.713-127.31836.6874.352NANANANANANANANA
us-gaap:OtherNonoperatingIncomeExpense ▆▅▆▆▆▅▆▆▆▆▆▅▆▆▆▅▆▆▆▆▆▆▆▆▆▆▅▆▆▆▄▄▁▅▆▅▄▄▇▂▆█▅█▅▃0.0-2.02.01.02.0-2.02.00.02.01.00.0-2.00.00.0-1.0-2.0-1.01.00.30.30.90.5-1.1-0.40.2-0.5-2.0950.2470.5370.864-8.575-8.857-19.486-1.971-1.826-3.044-6.85-6.6944.069-15.008-1.8276.198-2.2167.924-4.454-10.319NANANANA
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax ██▇▇▇▇▇▇▇▇▇▇▇▇▇▇▆▆▆▆▆▅▆▅▅▅▅▄▄▄▄▄▄▃▃▃▃▃▃▃▂▂▂▂▂▁▁▁▁▁4585.04401.04184.04243.04000.04225.04284.04248.04141.04110.04129.04078.04006.03912.03828.03766.03670.03546.03462.03453.23369.93202.03232.53187.03085.12911.42742.232581.0092517.0942422.3482355.4882305.7232161.242020.7381948.2151891.6881795.221711.3491663.7071600.9541485.2421371.2531310.6021216.9131105.154959.72902.721853.488776.592745.862
us-gaap:Revenues ██▇▇▇▇▇▇▇▇▇▇▇▇▇▇▆▆▆▆▆▅▆▅▅▅▅▄▄▄▄▄▄▃▃▃▃▃▃▃▂▂▂▂▂▁▁▁▁▁4585.04401.04184.04243.04000.04225.04284.04248.04141.04110.04129.04078.04006.03912.03828.03766.03670.03546.03462.03453.23369.93202.03232.53187.03085.12911.42742.232581.0092517.0942422.3482355.4882305.7232161.242020.7381948.2151891.6881795.221711.3491663.7071600.9541485.2421371.2531310.6021216.9131105.154959.72902.721853.488776.592745.862
us-gaap:SellingGeneralAndAdministrativeExpense █▇█▇▆▆▆▇▇█▇▇▇▆▆▆▆▆▇▆▆▆▆▆▅▅▅▄▄▄▄▄▃▃▃▃▃▃▃▃▃▂▂▂▂▁▁▁▁▁881.0827.0874.0804.0711.0711.0676.0771.0768.0873.0776.0734.0805.0711.0700.0674.0709.0686.0730.0700.5653.9646.2658.7627.1612.0610.8562.622506.019482.985485.395450.503443.376420.526413.204401.746384.951396.771374.178352.456353.161326.718296.33279.921262.632234.547194.993190.678193.806170.003166.872
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:Assets ▇▇▇██▇▇▇▆▇▇▆▆▆▆▆▆▅▆▆▅▅▅▅▅▄▅▃▃▃▃▂▂▂▂▂▂▂▁▁▁▁▁16829.016660.016923.018787.018216.017429.016204.015844.015517.016096.015913.015274.014806.015045.015221.014580.013938.013629.014262.013716.713140.112735.913065.412267.611797.611383.411718.9169227.0438687.2948279.2998208.9147617.1497012.326709.3026521.5716107.0395654.2195668.1255507.9335104.1154916.7024637.8734583.074NANANA3338.24NANANA
us-gaap:Liabilities ▆▆▆██▇▅▅▅▅▅▅▄▄▅▄▄▄▄▄▃▃▄▄▃▃▄▂▂▂▂▂▂▂▂▂▂▁▂▁▁▁▁5624.05623.06087.07647.07244.06816.05182.05142.04960.04960.04489.04296.04158.04057.04552.03601.03455.03646.03534.03424.43277.23123.63787.33440.63256.83204.93978.6981845.3331696.4651656.3422073.1231968.8731688.5721493.3681667.1881534.6691561.8861300.8761555.0471164.593964.853873.684998.643NANANA685.063NANANA
us-gaap:LiabilitiesAndStockholdersEquity ▇▇▇██▇▇▇▆▇▇▆▆▆▆▆▆▅▆▆▅▅▅▅▅▄▅▃▃▃▃▂▂▂▂▂▂▂▁▁▁▁▁16829.016660.016923.018787.018216.017429.016204.015844.015517.016096.015913.015274.014806.015045.015221.014580.013938.013629.014262.013716.713140.112735.913065.412267.611797.611383.411718.9169227.0438687.2948279.2998208.9147617.1497012.326709.3026521.5716107.0395654.2195668.1255507.9335104.1154916.7024637.8734583.074NANANA3338.24NANANA
us-gaap:StockholdersEquity ██▇██▇█▇▇███▇█▇█▇▇▇▇▇▆▆▆▅▅▅▄▄▄▃▃▃▂▂▂▁▂▁▁▁▁▁11205.011037.010836.011140.010972.010613.011022.010702.010557.011136.011424.010978.010648.010988.010669.010979.010483.09983.010728.010292.39862.99612.39278.18827.08540.88178.57740.2187381.716990.8296622.9576135.7915648.2765323.7485215.9344854.3834572.374092.3334367.2493952.8863939.5223951.8493764.1893584.431NANANA2653.177NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:AssetsCurrent ▅▅▅▇▇▇▆▆▆▆▇█▇██▇▇▆▇▇▆▆▆▆▅▅▅▆▅▄▄▄▃▃▃▂▂▂▂▁▁▁▁6451.06595.06851.08619.08531.08325.07611.07391.07206.07883.08677.08727.08303.08990.09111.08557.08099.07842.08600.08199.87758.97570.97908.67237.96771.46406.56750.2977260.0266740.696290.746147.8825739.2055133.9614836.644814.2944541.5314152.3524196.7424085.5063812.1973757.8973535.83518.234NANANA2307.568NANANA
us-gaap:CashAndCashEquivalentsAtCarryingValue ▂▃▅██▇▄▄▃▁▂▂▁▂▃▂▂▂▃▂▃▂▃▂▁▂▃▄▃▃▄▃▃▂▂▂▁▂▂▂▂▂▂▂▁▁▁1368.01973.02680.04436.04422.03886.02645.02343.01660.0950.01161.01339.0901.01440.01925.01577.01157.01308.02034.01550.31684.51523.82125.21476.71089.31271.42010.1492617.6191992.4421935.9912213.0062031.1191678.2051474.861570.0771324.7391050.2451328.5351310.9061181.2191193.041293.4991540.9691317.0771039.6861080.9421100.93NANANA
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents ▂▃▄██▇▄▄▂▁▁1368.01973.02680.04436.04422.03886.02645.02343.01660.0950.01161.0NANA1599.01925.0NANA1308.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:ShortTermInvestments ▂▁▁▁▁▂▃▂▄▇████▇▇█▇▇█▇▇▇▆▆▅▅▅▅▅▄▄▃▄▄▄▄▃▃▃▃▃▂482.0185.044.0139.0160.0396.0779.0734.01343.02718.03350.03424.03346.03390.03131.03136.03221.02966.03135.03308.32796.72927.92824.32574.02477.22078.41764.5772000.862136.7791928.9931534.4671329.481222.3641269.5861293.6811307.0091295.8971162.661121.3581110.0571076.371874.616685.419NANANA298.402NANANA
us-gaap:AccountsReceivableNetCurrent █▇▇▇▇▇▇████▇▇▇▆▆▆▆▆▅▅▅▅▄▄▄▄▄▄▃▃▃▃▃▂▂▂▂▂▂▁▁▁3419.03232.03087.03118.03208.03220.03256.03438.03386.03377.03257.03187.03204.03145.02865.02889.02680.02644.02556.02492.12427.42319.12252.62135.72162.22059.91968.681809.0381822.6361703.6051648.7851637.1261560.8561495.9961345.6611363.4541296.1751234.1771179.0431104.7031075.193994.948901.308NANANA626.288NANANA
us-gaap:OtherAssetsCurrent ██▇▆▅▅▆▆▅▆▆▅▆▆▆▄▄▄▄▃▃▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▂▁▁▁▁1182.01205.01040.0926.0741.0823.0931.0876.0817.0838.0909.0777.0852.0856.0833.0552.0632.0529.0526.0425.5399.2367.9337.5264.7322.7336.9352.613234.942257.048254.372268.907218.785220.034206.364219.896166.424198.172189.648225.53144.77180.138176.415181.414NANANA125.205NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:PropertyPlantAndEquipmentGross NANA3573.0NANANA3351.0NANANA3184.0NANANA2840.0NANANA2624.0NANANA2350.5NANANA2099.329NANANA1800.5NANANA1545.278NANANA1213.54NANANA922.92NANANA756.086NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType ctsh:ComputerSoftwareNANA840.0NANANA820.0NANANA721.0NANANA594.0NANANA470.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:BuildingNANA783.0NANANA790.0NANANA839.0NANANA836.0NANANA823.0NANANA804.9NANANA605.052NANANA444.955NANANANANANANANANANANANANANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:ComputerEquipmentNANA636.0NANANA516.0NANANA412.0NANANA364.0NANANA379.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:ConstructionInProgressNANA122.0NANANA133.0NANANA156.0NANANA145.0NANANA169.0NANANA114.9NANANA304.676NANANA360.578NANANANANANANANANANANANANANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:FurnitureAndFixturesNANA761.0NANANA702.0NANANA639.0NANANA511.0NANANA431.0NANANA384.5NANANA322.579NANANA273.815NANANANANANANANANANANANANANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:LandNANA7.0NANANA11.0NANANA19.0NANANA19.0NANANA23.0NANANA22.6NANANA22.644NANANA22.644NANANANANANANANANANANANANANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:LeaseholdImprovementsNANA424.0NANANA379.0NANANA338.0NANANA308.0NANANA266.0NANANA263.3NANANA246.969NANANA211.675NANANANANANANANANANANANANANANANANANANA
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment NANA2322.0NANANA2042.0NANANA1790.0NANANA1516.0NANANA1313.01255.31191.21135.61079.11013.4957.8895.1852.124807.865768.618740.021719.336680.664646.675610.162573.792551.624515.153482.704455.506429.269402.581377.051352.472NANANA274.57NANANA
us-gaap:PropertyPlantAndEquipmentNet ▇▇▇▇█▇▇▇█▇███▇▇▇▇▇▇▇▇▇▇▇▇▇▇▆▅▅▅▅▅▅▄▄▃▃▃▂▁▁▁1225.01250.01251.01313.01345.01322.01309.01318.01337.01314.01394.01362.01345.01333.01324.01304.01284.01306.01311.01323.31287.41270.01271.41278.91277.31268.01247.2051101.4681086.1161090.8851081.1641011.8031017.7051008.198971.486878.561837.683784.975758.034664.609614.494601.699570.448NANANA481.516NANANA
us-gaap:LongTermInvestments ██████▁▂▂▂▂▂▂▂▅▅▄▃▂433.0439.0440.0441.0429.0433.017.079.080.079.080.093.080.083.0235.0262.0198.0110.062.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:Goodwill ██▇▇▇▆▆▆▆▆▅▅▅▄▄▄▄▄▄▄▄▄▄▄▄▄▄▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁5457.05219.05031.04931.04391.04014.03979.03694.03651.03638.03481.03037.03036.02713.02704.02608.02576.02563.02554.02482.02457.92461.82404.72403.62405.32403.62413.564437.776449.541445.182444.236417.959412.647407.349309.185301.403289.211289.904288.772289.056224.136224.009223.963NANANA192.372NANANA
us-gaap:IntangibleAssetsNetExcludingGoodwill █▇▇▇▇▇▇████▇▇▆▇▆▆▆▆▆▆▆▆▆▆▆▆▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁1219.01110.01046.01087.01026.01005.01041.01192.01161.01185.01150.01021.01060.0955.0981.0957.0894.0923.0951.0936.9961.4862.3864.3881.4906.1928.4953.749109.692120.952124.735131.274118.141121.991122.50187.47587.58386.5393.42197.616102.56787.8581.7985.136NANANA75.757NANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass us-gaap:CustomerRelationshipsNANA843.0NANANA791.0NANANA879.0NANANA701.0NANANA626.0NANANA492.7NANANA532.181NANANA115.384NANANA75.595NANANA83.587NANANA80.616NANANA71.654NANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass us-gaap:DevelopedTechnologyRightsNANA102.0NANANA149.0NANANA168.0NANANA193.0NANANA236.0NANANA279.6NANANA323.471NANANA1.256NANANA2.018NANANA2.883NANANA2.528NANANA3.085NANANA
us-gaap:DeferredTaxAssetsLiabilitiesNet NANA239.0NANANA550.0NANANA259.0NANANA272.0NANANA419.0NANANA344.5NANANA222.408NANANA456.405NANANA377.487NANANA269.822NANANA199.892NANANA154.409NANANA
us-gaap:OperatingLeaseRightOfUseAsset █▇███▅▅▄▂▁1004.0980.01013.01004.01002.0927.0926.0905.0847.0809.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherAssetsNoncurrent ▇▇████▇▇▇▇▇▆▆▆▄▄▄▄▄▃▃▃▃▃▃▂▂▂▂▂▂▂▂▂▂▂▁▂▁▁▁▁▁732.0760.0846.0829.0823.0809.0736.0773.0767.0724.0689.0643.0615.0577.0448.0428.0430.0427.0359.0328.8286.2275.9268.6262.1277.7223.6209.663175.348166.7187.189183.013169.295160.074169.647160.307143.034120.981139.009113.813100.116119.47982.26975.485NANANA49.278NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:AccountsPayableCurrent ▇▇▇█▇▅▄▄▅▅▄▄▄▅▄▃▃▃▃▃▃▄▃▃▃▃▂▂▂▃▂▂▁▂▂▂▂▂▁▁▁▂▁351.0349.0389.0420.0359.0289.0239.0246.0254.0262.0215.0223.0217.0293.0210.0186.0179.0189.0175.0171.5164.5213.2165.3160.1169.0181.4145.687130.04119.145176.374113.394114.82594.069132.501108.707111.42104.411109.98372.20578.18389.057117.59575.373NANANA54.64NANANA
us-gaap:AccruedIncomeTaxesCurrent ▁▁▂▃█▅▄▃▃▄▄▄▅▂▂▁▁▁▁▁▂25.011.034.0122.0330.0197.0152.0111.0108.0130.0162.0158.0174.074.048.023.015.012.010.014.734.6NA17.1NANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LiabilitiesCurrent ▇▇█▇▇▆▇▆▆▆▆▆▅▅▆▆▅▆▅▅▄▄▆▄▄▄▆▃▃▃▃▃▂▂▂▂▂▂▂▂▁▁▁3183.03150.03540.03296.03212.02872.02983.02919.02824.02720.02777.02693.02537.02469.02839.02600.02415.02585.02418.02300.72120.02050.42713.72128.41956.51884.12592.0941741.4641567.6621502.8661774.5081602.0381357.2971225.8431377.331275.5881151.0951021.2451209.7051040.73887.351801.713930.726NANANA646.608NANANA
us-gaap:OperatingLeaseLiabilityCurrent ▆▅██▆▄▅▄▅▁204.0202.0211.0213.0206.0197.0202.0195.0201.0184.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherLiabilitiesCurrent ▅▇█▆▆▇▇▆▆▆▆▆▆▆▆▅▄▅▅▅▄▃▃▃▃▃▃▃▂▂▂▂▂▁▁▁▁▁▁▂▁▁▁308.0376.0461.0333.0358.0384.0380.0366.0363.0359.0369.0329.0322.0333.0325.0275.0262.0296.0315.0275.7239.8177.6182.9174.0176.7179.7184.605157.724147.226138.415121.572108.857105.39292.20291.43689.48488.44981.93788.59394.68467.86564.17978.227NANANA66.052NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
 us-gaap:LongTermDebt us-gaap:DebtInstrument,us-gaap:LongtermDebtType ctsh:CreditAgreement,us-gaap:LoansPayable▁▂▃▄▆▇█685.0694.0703.0713.0722.0731.0741.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LongTermDebtNoncurrent ▁▁▁███▁▁▁▁▁▁▁▁▁▁▁▂▂▂▂▂▂▂▂▂▂645.0654.0663.02412.02421.02430.0700.0709.0718.0727.0736.0624.0649.0673.0698.0723.0747.0772.0797.0821.6840.0858.4881.2900.0912.5925.0937.5NANANA0.0NANANANANANANANANANANANANANANANANANANA
us-gaap:DeferredIncomeTaxLiabilitiesNet ▆▅▅█▁▁▁230.0204.0206.0310.028.031.035.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherLiabilitiesNoncurrent ▆▇▇▇▆▄▄▃▃▃▅▅▅▄▃▃▃▃▃▃▃▃▃▂▂▂▂▁▂▂▅▇▆▅▆▅█▅▇▂▁▁▁313.0334.0368.0349.0307.0229.0218.0181.0161.0150.0253.0260.0242.0199.0181.0159.0155.0155.0162.0140.1138.6138.1139.8129.2103.9111.2116.42485.828108.941133.201277.445352.041316.727252.684287.081254.488407.718276.653342.003120.25873.94468.10162.971NANANA38.455NANANA
us-gaap:OperatingLeaseLiabilityNoncurrent █▇█▇▆▄▄▄▂▁842.0821.0846.0820.0802.0734.0745.0734.0679.0651.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo NANA218.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree NANA180.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour NANA143.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive NANA121.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive NANA349.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:StockholdersEquity ██▇██▇█▇▇███▇█▇█▇▇▇▇▇▆▆▆▅▅▅▄▄▄▃▃▃▂▂▂▁▂▁▁▁▁▁11205.011037.010836.011140.010972.010613.011022.010702.010557.011136.011424.010978.010648.010988.010669.010979.010483.09983.010728.010292.39862.99612.39278.18827.08540.88178.57740.2187381.716990.8296622.9576135.7915648.2765323.7485215.9344854.3834572.374092.3334367.2493952.8863939.5223951.8493764.1893584.431NANANA2653.177NANANA
us-gaap:CommonStockValue ▁▁▁▁▁▁▁▇▇▇▇▇▇▇▇▇▇▇▇████████████████▇▇██████5.05.05.05.05.05.05.06.06.06.06.06.06.06.06.06.06.06.06.06.16.16.16.16.16.16.16.0946.0896.0796.0846.0786.0486.0266.056.0345.9985.9866.0886.0626.0426.0726.0846.078NANANA5.944NANANA
us-gaap:AdditionalPaidInCapital ▁▁▁▁▁▁▁▁▁▁▁▂▁▁▁▃▂▁▄▃▄▃▅▄▅▆▅▆▅▆▅▅▄▅▅▄▄▇▇▆▇██32.044.032.033.083.041.033.035.038.064.047.0119.055.063.049.0208.0128.059.0358.0279.2333.7301.4453.0432.4520.6607.2555.558560.502513.057572.913546.644482.306426.929503.342457.26404.404407.972731.359692.723644.783756.896813.962846.886NANANA664.56NANANA
us-gaap:RetainedEarningsAccumulatedDeficit ██▇██▇█▇▇███▇▇▇▇▇▇▇▇▇▆▆▆▅▅▅▄▄▄▄▃▃▃▃▂▂▂▂▂▁▁▁11086.010907.010689.011142.011072.010831.011022.010820.010583.011140.011485.011041.010681.010856.010544.010721.010316.09935.010478.010063.29618.89366.48925.28501.88104.67684.57301.6346938.7776583.1536211.2455862.3675538.0355218.4084917.9984633.7894355.014078.1093826.1773582.5263342.3993115.282907.2352698.908NANANA1965.368NANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ███▆▄▃▆▄▆▅▅▄▅▇▇▇▇▆▅▆▅▆▅▅▅▅▅▅▅▄▃▁▂▄▃▄▁▄▂▆█▇▇82.081.0110.0-40.0-188.0-264.0-38.0-159.0-70.0-74.0-114.0-188.0-94.063.070.044.033.0-17.0-114.0-56.2-95.7-61.6-106.2-113.3-90.5-119.3-123.068-123.658-111.46-167.285-276.259-375.089-324.602-208.431-239.683-190.043-396.741-193.331-325.394-50.68176.63739.9535.598NANANA20.277NANANA
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue █▁67.062.0NA58.065.055.0NA52.054.066.068.069.071.059.060.052.055.054.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▅▂▇██▅█▆▅▃▆▇▆▄▇▇▅▃▅▅▄▁▆▇▄▂▃▅▄▂▅▄▄▂▄▄▃▂▃▃▃▁▄▃▂▁541.0181.0898.0925.0979.0497.0938.0717.0575.0269.0702.0862.0640.0388.0836.0773.0521.0277.0598.6594.0359.668.8690.0817.9456.1189.3324.196583.181408.313157.32505.873478.878365.55773.468361.86384.86324.1101.763285.066329.344215.11345.629392.294234.738135.2942.328NANANANA
us-gaap:NetCashProvidedByUsedInInvestingActivities ▄▅▆▄▅▅▅▆█▆▅▅▅▅▅▅▅▆▆▅▆▅▅▅▅▅▁▆▅▅▅▅▆▅▅▆▅▅▅▅▅▅▅▆▅▆-721.0-538.0-49.0-658.0-259.0-272.0-375.0340.01267.0356.0-550.0-266.0-584.0-227.0-160.0-124.0-389.091.0-90.3-612.4-31.9-228.4-340.2-176.9-489.5-364.0-2534.05864.552-257.534-433.654-352.387-152.602-39.9-185.874-140.712-86.531-247.316-95.487-173.232-180.646-243.746-252.657-154.305-34.6-200.844-57.141NANANANA
us-gaap:NetCashProvidedByUsedInFinancingActivities ▅▅▁▅▅▇▅▅▃▄▅▅▄▅▅▅▅▃▅▅▅▅▆▅▅▄█▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅-428.0-340.0-2626.0-347.0-171.01135.0-253.0-340.0-1137.0-839.0-325.0-146.0-734.0-488.0-333.0-231.0-297.0-1124.010.6-118.5-143.3-467.8306.8-248.5-149.1-557.31611.798-8.4-93.415-6.57330.18228.332-106.31316.93224.064-25.649-348.527.11721.276-146.924-80.763-49.044-14.46861.02629.90443.541NANANANA
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect ▄▃▁▅▆█▆▇▇▅-605.0-707.0-1756.014.0536.01241.0302.0683.0710.0-211.0NANANA-326.0NANANA-726.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:DeferredIncomeTaxExpenseBenefit ▃▄▁█▂▃▁▃▁▂▂▃▄▃▅▂▃▃▂▂▂▄▃▂▂▃▂▂▂▃▂▃▃▃▂▂▃▃▃▃▃▃▂▃▃▃-3.0122.0-106.0383.0-74.0-19.0-103.0-23.0-138.0-42.0-38.0-5.049.02.0170.0-54.0-1.09.0-46.8-70.3-42.568.6-18.8-70.4-65.929.0-56.207-45.813-33.8336.27-65.35-21.847-24.02723.03-56.018-79.01925.311-8.18217.605-24.385-21.7219.901-91.630.86115.53423.326NANANANA
us-gaap:DepreciationDepletionAndAmortization ███▇▇▇▇▇▇▇▇▇▇▆▇▆▅▅▅▅▅▅▅▄▄▄▃▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁145.0141.0148.0138.0137.0136.0133.0127.0133.0133.0131.0127.0123.0117.0122.0114.0103.0104.0100.697.892.987.788.082.484.075.662.87649.71748.79446.6847.91744.57843.83443.60141.16441.36637.43336.62534.29931.63929.27328.96429.61427.92925.24827.381NANANANA
us-gaap:IncreaseDecreaseInAccountsPayable ▃▇▆▄▇▆▄▅▃▇▅▄▁█▅▄▄▅▄▅▃▆▅▄▄▆▄▆▂▇▄▅▃▅▄▅▄▆▄▄▃▆▄▅▄▆-44.061.026.0-20.059.044.0-13.019.0-47.049.01.0-2.0-89.086.021.0-7.0-11.013.0-5.96.0-42.248.12.6-2.6-8.928.3-18.9236.477-57.565.624-15.37415.518-28.53616.269-6.61312.201-11.39638.581-5.939-10.298-33.43541.079-17.9715.949-15.4736.088NANANANA
us-gaap:IncreaseDecreaseInAccountsReceivable ▆▆▃▂▃▄▁▅▄▆▅▄▅█▄▇▄▅▅▅▆▅▆▄▅▆▅▄▆▅▄▅▅▆▄▅▅▅▅▅▅▅▄▆▆▅148.0131.0-52.0-134.0-65.0-13.0-213.047.0-2.0131.052.0-17.057.0273.0-35.0181.017.086.068.874.0132.055.2131.84.975.0110.791.6776.464108.52952.662-15.03356.20867.873149.421-25.93464.58870.08549.86476.92536.82381.3989.029-13.39999.508100.08992.22NANANANA
us-gaap:NetCashProvidedByUsedInOperatingActivities ▅▂▇██▅█▆▅▃▆▇▆▄▇▇▅▃▅▅▄▁▆▇▄▂▃▅▄▂▅▄▄▂▄▄▃▂▃▃▃▁▄▃▂▁541.0181.0898.0925.0979.0497.0938.0717.0575.0269.0702.0862.0640.0388.0836.0773.0521.0277.0598.6594.0359.668.8690.0817.9456.1189.3324.196583.181408.313157.32505.873478.878365.55773.468361.86384.86324.1101.763285.066329.344215.11345.629392.294234.738135.2942.328NANANANA
us-gaap:NetIncomeLoss ▇▆▅▅▅▅▅▆▇▆█▆▆▇▁▆▆▇▆▆▄▆▆▅▆▅▅▅▅▅▅▅▄▄▄▄▄▄▄▄▃▃▃▃▃▃▃▃▃▂512.0505.0316.0348.0361.0367.0395.0497.0509.0441.0648.0477.0456.0520.0-18.0495.0470.0557.0416.0444.4252.4441.2423.4397.2420.1382.9362.857355.624371.908348.878324.332319.627300.41284.209278.779276.901251.932243.651240.127227.119208.045208.327206.166203.699172.175151.5144.004136.572141.255113.132
us-gaap:ShareBasedCompensation █▇▆▆▇▆▅▆▆▇███▇▇▆▆▆▆▅▇▆▅▅▅▅▃▃▃▄▃▃▃▃▃▂▃▃▂▂▂▁▁▁▁▁67.062.054.058.065.055.045.052.054.066.068.069.071.059.060.052.055.054.051.649.762.253.550.446.449.445.834.20331.27133.53435.81732.44727.02330.23729.09327.44422.26126.27131.37925.98824.523.67916.06514.9414.10913.9913.945NANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities ▄▅▆▄▅▅▅▆█▆▅▅▅▅▅▅▅▆▆▅▆▅▅▅▅▅▁▆▅▅▅▅▆▅▅▆▅▅▅▅▅▅▅▆▅▆-721.0-538.0-49.0-658.0-259.0-272.0-375.0340.01267.0356.0-550.0-266.0-584.0-227.0-160.0-124.0-389.091.0-90.3-612.4-31.9-228.4-340.2-176.9-489.5-364.0-2534.05864.552-257.534-433.654-352.387-152.602-39.9-185.874-140.712-86.531-247.316-95.487-173.232-180.646-243.746-252.657-154.305-34.6-200.844-57.141NANANANA
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▅▅▅▇▆▇▆▆▆▇▆▆▆▆▅▅▃▄▅▄▄▄▄▄▅▃▄▃▂▂▇▂▃▄█▄▅▃█▄▂▃▄▂▂▁75.088.089.0104.093.0112.093.097.096.0106.096.094.091.096.080.078.060.066.087.274.274.963.774.165.175.658.074.65655.5938.70143.256107.2831.83650.32572.185125.74969.94478.32160.451124.56174.1133.73555.81574.55144.79641.94624.219NANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities ▅▅▁▅▅▇▅▅▃▄▅▅▄▅▅▅▅▃▅▅▅▅▆▅▅▄█▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅-428.0-340.0-2626.0-347.0-171.01135.0-253.0-340.0-1137.0-839.0-325.0-146.0-734.0-488.0-333.0-231.0-297.0-1124.010.6-118.5-143.3-467.8306.8-248.5-149.1-557.31611.798-8.4-93.415-6.57330.18228.332-106.31316.93224.064-25.649-348.527.11721.276-146.924-80.763-49.044-14.46861.02629.90443.541NANANANA
us-gaap:PaymentsOfDividendsCommonStock ██▇███▇▇▇▇▇▇▇▇▆▆▆▁▁▁127.0128.0118.0120.0121.0121.0110.0111.0116.0116.0116.0116.0118.0118.086.090.089.00.00.00.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:PaymentsForRepurchaseOfCommonStock ▂▂▅▂▁▃▂▂▆▅▂▁▄▂▃▁▁█▁▂▁▂▁▂▂▁▁▁▂▁▁▁▂▁▁▁▃▁▁▂▁▁▁▁▁▁320.0240.0788.0248.074.0511.0163.0259.01054.0771.0267.045.0633.0316.0332.013.030.01514.019.8157.177.7257.476.8169.2175.638.477.0299.427122.75839.10324.6686.927124.85522.55436.9565.112369.80148.9829.173172.844103.86488.26646.9047.1952.5862.315NANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value5000000.05000000.05000000.05000000.05000000.05000000.05000000.06000000.06000000.06000000.06000000.06000000.06000000.06000000.06000000.06000000.06000000.06000000.06000000.06100000.06100000.06100000.06100000.06100000.06100000.06100000.06094000.06089000.06079000.06084000.06078000.06048000.06026000.06050000.06034000.05998000.05986000.06088000.06062000.06042000.06072000.06084000.06078000.05944000.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.2

Common Stock Shares Issued

us-gaap:CommonStockSharesIssued

us-gaap:CommonStockSharesIssued


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value525528530539542541548550552569577580580586588590590607608606607606609608609610609608607608607604602604603599598608606604607608607594
Percentage of CommonStockSharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Common Stock Shares Outstanding

us-gaap:CommonStockSharesOutstanding

us-gaap:CommonStockSharesOutstanding


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value525528530539542541548550552569577580580586588590590607608606607606609608609610609608607608607604602604603599598608606604607608607594
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStockSharesOutstanding us-gaap:StatementEquityComponents

us-gaap:CommonStock


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value525528530539542541548550552569577580580586588590590589608609609303301303303297291288
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.097.0100.0100.0100.050.050.050.050.050.00.00.0

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value528531543541546551564575580586589592591607608608611612613613612612612610608608610606614618618622623619616613
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value527530542541546551564573579585587590589605606606608608609609608607607605603603603598604606605607608603599595
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value0.970.950.60.640.670.670.720.90.90.771.120.820.780.89-0.030.840.80.920.690.730.420.730.70.650.690.630.60.580.610.570.5350.530.50.470.4650.4650.4150.40.3950.3750.340.3450.340.340.2850.2550.2450.2350.240.195
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value0.970.950.590.640.670.670.720.90.90.771.120.820.780.88-0.030.840.80.920.680.730.410.720.690.650.680.620.590.580.610.570.530.5250.4950.4650.460.4550.410.3950.390.3650.3350.3350.330.330.280.2450.2350.2250.2350.19
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value5134764664964371415164085134817223832995148.050652065435748321848543037444838636334342745742326918431522948348375-34.58699244212216250107175
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.210.80.011.710.93.312.09.612.411.717.59.47.513.10.213.414.218.410.314.06.515.213.311.714.613.313.313.317.018.918.011.78.515.611.825.62.722.0-2.16.216.515.516.520.69.718.3

Cost Of Goods And Service Excluding Depreciation Depletion And Amortization

us-gaap:CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization

us-gaap:CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value28632764266226472615274727492681262925752540248024172401
Percentage of CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax62.462.80.062.465.465.064.263.163.562.761.560.860.361.4

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

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value694665467624495510626658676583815662623697713658635649560612594589561543548510485463501473451439420377365364335322323287277280248243208178
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax15.115.10.014.712.412.114.615.516.314.219.716.215.617.818.617.517.318.316.217.717.618.417.417.017.817.517.718.019.919.519.219.019.518.718.819.318.718.819.418.018.720.519.020.018.818.6

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1841601522761341421741601671421681851681777321641659214516834214713714512812712210812912412611911992878783788260697242393527
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.03.60.06.53.43.44.13.84.03.54.14.54.24.519.14.44.52.64.24.910.24.64.34.64.24.44.54.25.25.15.45.25.64.64.54.64.64.65.03.84.75.33.23.33.22.8

us-gaap:IncomeTaxExpenseBenefit ctsh:OnetimeTransactionType

ctsh:TaxOnAccumulatedIndianEarnings


Income
Period End2020-09-30
Value140
Percentage of IncomeTaxExpenseBenefit50.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ctsh:TaxOnAccumulatedIndianEarnings0.0

Interest Expense

us-gaap:InterestExpense

us-gaap:InterestExpense


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value2.02.03.06.09.06.06.07.06.07.08.06.07.06.05.06.06.06.04.44.94.65.14.34.34.15.02.1680.30.00.0
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.10.20.10.10.20.10.20.20.10.20.20.10.20.20.20.10.10.10.20.10.10.10.20.10.00.00.0

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value512505316348361367395497509441648477456520-18.0495470557416444252441423397420382362355371348324319300284278276251243240227208208206203172151144136141113
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.211.50.08.29.08.79.211.712.310.715.711.711.413.3-0.513.112.815.712.012.97.513.813.112.513.613.213.213.814.814.413.813.913.914.114.314.614.014.214.414.214.015.215.716.715.615.816.016.018.215.2

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-03-312020-06-302020-03-312019-09-302019-06-302019-03-312018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value505361367497509441456520-18.0495470557
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.59.08.711.712.310.711.413.3-0.513.112.815.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.0

Nonoperating Income Expense

us-gaap:NonoperatingIncomeExpense

us-gaap:NonoperatingIncomeExpense


Nonoperating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-2.0-4.02.02128-69.00.0-11.05744122-83.0-47.04.05610.02979-0.3293.7357.80.23.3105.8586.22613133.2981.839-6.406119.5918.9973.1344.37814-5.0387.647153.923142.093-4.265
Percentage of NonoperatingIncomeExpense100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.0-0.10.00.50.7-1.60.0-0.31.41.13.0-2.0-1.20.11.50.30.82.2-0.00.90.11.10.20.00.10.40.20.20.60.50.10.1-0.30.60.50.50.20.30.9-0.30.51.10.31.20.2-0.4

Operating Expenses

us-gaap:OperatingExpenses us-gaap:ConsolidationItems

us-gaap:OperatingExpenses

us-gaap:CorporateNonSegment


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-31
Value695671666736614574505521541606416534586507522508418495498505542516365326374373
Percentage of OperatingExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax15.215.20.017.315.313.611.812.313.114.710.113.114.613.013.913.811.814.414.815.817.016.712.612.714.915.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CorporateNonSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Operating Income Loss

us-gaap:OperatingIncomeLoss

us-gaap:OperatingIncomeLoss


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value696669465603467579626669619539693745670693657648606570561583590554553542545500479457487460447437426365356355331317308293269265244228205183166161151138
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax15.215.20.014.211.713.714.615.714.913.116.818.316.717.717.217.216.516.116.216.917.517.317.117.017.717.217.517.719.419.019.019.019.718.118.318.818.518.618.518.318.219.418.718.818.619.118.519.019.518.5

us-gaap:OperatingIncomeLoss us-gaap:ConsolidationItems

us-gaap:OperatingSegments


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-31
Value139113401131133910811153113111901160114511091279125612001170111498810791089105910851061865784862833818749644
Percentage of OperatingIncomeLoss199.9200.3243.2222.1231.5199.1180.7177.9187.4212.4160.0171.7187.5173.2180.6183.8173.3185.0184.3191.2200.0194.6173.1171.4176.8181.2187.2175.6176.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax30.330.40.031.627.027.326.428.028.027.926.931.431.430.731.130.427.931.332.333.134.134.429.730.434.334.435.534.731.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

us-gaap:OperatingSegments, ctsh:CommunicationsMediaandTechnology


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value235215239191174190188186184174178184179159151147146121114118134122
Percentage of OperatingIncomeLoss33.832.151.431.737.332.830.027.829.732.325.724.726.722.923.022.724.121.220.320.222.722.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.14.90.04.54.34.54.44.44.44.24.34.54.54.13.93.94.03.43.33.44.03.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments ctsh:CommunicationsMediaandTechnology0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, ctsh:FinancialServices


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-31
Value439406240463365381380418407400402446462447390444411391391433459423444430420347300318354347324305265
Percentage of OperatingIncomeLoss63.160.751.676.878.265.860.762.565.874.258.059.969.064.559.468.567.868.669.874.277.776.480.379.277.069.462.669.572.675.674.271.672.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.69.20.010.99.19.08.99.89.89.79.710.911.511.410.211.811.211.011.312.513.613.213.813.513.611.910.912.314.114.414.114.113.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments ctsh:FinancialServices0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, ctsh:HealthcareSegment


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312017-06-302016-06-30
Value388411379378305321343270
Percentage of OperatingIncomeLoss55.761.481.562.765.355.456.645.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.59.30.08.97.67.69.38.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments ctsh:HealthcareSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, ctsh:ProductsandResources


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value329308273307237261265274255234262267258256219232214203192214226219
Percentage of OperatingIncomeLoss47.346.058.750.950.745.142.341.041.243.437.835.838.536.933.335.835.335.634.236.738.239.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.27.00.07.25.96.26.26.56.25.76.36.56.46.55.76.25.85.75.56.26.76.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments ctsh:ProductsandResources0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, us-gaap:HealthCare


Operating
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value378305321312314337374352337
Percentage of OperatingIncomeLoss62.765.355.446.650.762.550.252.548.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.97.67.67.37.68.29.28.88.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments us-gaap:HealthCare0.00.00.00.00.00.00.00.00.0

Other Comprehensive Income Loss Net Of Tax

us-gaap:OtherComprehensiveIncomeLossNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value1.0-29.014876-226.0-89.04.04074-94.0-157.0-6.02611509731-49.64206-203.41132-274.713-127.318364.352
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-0.73.51.9-5.3-2.10.11.01.8-2.3-3.9-0.20.70.31.42.71.5-2.510.9-11.37.7-16.5-8.02.50.3

Other Nonoperating Income Expense

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:OtherNonoperatingIncomeExpense


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0-2000000.02000000.01000000.02000000.0-2000000.02000000.002000000.01000000.00-2000000.000-1000000.0-2000000.0-1000000.01000000.0300000.0300000.0900000.0500000.0-1100000.0-400000.0200000.0-500000.0-2095000.0247000.0537000.0864000.0-8575000.0-8857000.0-19486000.0-1971000.0-1826000.0-3044000.0-6850000.0-6694000.04069000.0-15008000.0-1827000.06198000.0-2216000.07924000.0-4454000.0-10319000.0
Percentage of OtherNonoperatingIncomeExpense0.0100.0100.0100.0100.0100.0100.00.0100.0100.00.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-0.00.00.00.1-0.00.00.00.00.00.0-0.00.00.0-0.0-0.1-0.00.00.00.00.00.0-0.0-0.00.0-0.0-0.10.00.00.0-0.4-0.4-0.9-0.1-0.1-0.2-0.4-0.40.2-0.9-0.10.5-0.20.7-0.4-1.1

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value458544014184424340004225428442484141411041294078400639123828376636703546346234533369320232323187308529112742258125172422235523052161202019481891179517111663160014851371131012161105959902853776745
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ContractWithCustomerBasisOfPricing

ctsh:TransactionOrVolumeBased


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value511487504474468520524504519490471448438332
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.111.112.011.211.712.312.211.912.511.911.411.010.98.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.111.112.011.211.712.312.211.912.511.911.411.010.98.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ctsh:TransactionOrVolumeBased100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FixedPriceContract


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value17841681153215681471155415981544148014681511148414491522
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax38.938.236.637.036.836.837.336.335.735.736.636.436.238.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax38.938.236.637.036.836.837.336.335.735.736.636.436.238.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:FixedPriceContract100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TimeAndMaterialsContract


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value22902233214822012061215121622200214221522147214621192058
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax49.950.751.351.951.550.950.551.851.752.452.052.652.952.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax49.950.751.351.951.550.950.551.851.752.452.052.652.952.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:TimeAndMaterialsContract100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ContractWithCustomerBasisOfPricing, us-gaap:StatementBusinessSegments

ctsh:TransactionOrVolumeBased, ctsh:CommunicationMediaandTechnology


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3230252622242631313025212724
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.70.70.60.60.60.60.60.70.70.70.60.50.70.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.70.70.60.60.50.60.60.70.70.70.60.50.70.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ctsh:TransactionOrVolumeBased ctsh:CommunicationMediaandTechnology100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ctsh:TransactionOrVolumeBased, ctsh:FinancialServices


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value9488878779848186765356575655
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.12.02.12.12.02.01.92.01.81.31.41.41.41.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.12.02.12.12.02.01.92.01.81.31.41.41.41.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ctsh:TransactionOrVolumeBased ctsh:FinancialServices100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ctsh:TransactionOrVolumeBased, ctsh:HealthcareSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value282270283260272310315283310307284273261162
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.26.16.86.16.87.37.46.77.57.56.96.76.54.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.26.16.86.16.87.37.46.77.57.56.96.76.54.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ctsh:TransactionOrVolumeBased ctsh:HealthcareSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ctsh:TransactionOrVolumeBased, ctsh:ProductsandResources


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1039910910195102102104102100106979491
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.22.22.62.42.42.42.42.42.52.42.62.42.32.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.22.22.62.42.42.42.42.42.52.42.62.42.32.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ctsh:TransactionOrVolumeBased ctsh:ProductsandResources100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FixedPriceContract, ctsh:CommunicationMediaandTechnology


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value249230233218201219214202197190189187179179
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.45.25.65.15.05.25.04.84.84.64.64.64.54.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.45.25.65.15.05.25.04.84.84.64.64.64.54.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:FixedPriceContract ctsh:CommunicationMediaandTechnology100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FixedPriceContract, ctsh:FinancialServices


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value500471359450444483500481477464475453460471
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.910.78.610.611.111.411.711.311.511.311.511.111.512.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.910.78.610.611.111.411.711.311.511.311.511.111.512.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:FixedPriceContract ctsh:FinancialServices100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FixedPriceContract, ctsh:HealthcareSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value529499485466417409433420382400446452443511
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.511.311.611.010.49.710.19.99.29.710.811.111.113.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.511.311.611.010.49.710.19.99.29.710.811.111.113.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:FixedPriceContract ctsh:HealthcareSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FixedPriceContract, ctsh:ProductsandResources


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value506481455434409443451441424414401392367361
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.010.910.910.210.210.510.510.410.210.19.79.69.29.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.010.910.910.210.210.510.510.410.210.19.79.69.29.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:FixedPriceContract ctsh:ProductsandResources100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TimeAndMaterialsContract, ctsh:CommunicationMediaandTechnology


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value422397403372357383392382379375371354335306
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.29.09.68.88.99.19.29.09.29.19.08.78.47.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.29.09.68.88.99.19.29.09.29.19.08.78.47.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:TimeAndMaterialsContract ctsh:CommunicationMediaandTechnology100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TimeAndMaterialsContract, ctsh:FinancialServices


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value908899859932873884887925920919920954953935
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax19.820.420.522.021.820.920.721.822.222.422.323.423.823.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax19.820.420.522.021.820.920.721.822.222.422.323.423.823.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:TimeAndMaterialsContract ctsh:FinancialServices100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TimeAndMaterialsContract, ctsh:HealthcareSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value514519502505468475473472442458472464452448
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.211.812.011.911.711.211.011.110.711.111.411.411.311.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.211.812.011.911.711.211.011.110.711.111.411.411.311.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:TimeAndMaterialsContract ctsh:HealthcareSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TimeAndMaterialsContract, ctsh:ProductsandResources


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value446418384392363409410421401400384374379369
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.79.59.29.29.19.79.69.99.79.79.39.29.59.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.79.59.29.29.19.79.69.99.79.79.39.29.59.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:TimeAndMaterialsContract ctsh:ProductsandResources100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService

ctsh:ConsultingAndTechnologyServices


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value28712724253626422457254725662530244124092404235122862268
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax62.661.960.662.361.460.359.959.658.958.658.257.757.158.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax62.661.960.662.361.460.359.959.658.958.658.257.757.158.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ctsh:ConsultingAndTechnologyServices100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ctsh:OutsourcingServices


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value17141677164816011543167817181718170017011725172717201644
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax37.438.139.437.738.639.740.140.441.141.441.842.342.942.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax37.438.139.437.738.639.740.140.441.141.441.842.342.942.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ctsh:OutsourcingServices100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

ctsh:ConsultingAndTechnologyServices, ctsh:CommunicationMediaandTechnology


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value422396401369338348347332320306302292289278
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.29.09.68.78.48.28.17.87.77.47.37.27.27.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.29.09.68.78.58.28.17.87.77.47.37.27.27.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ctsh:ConsultingAndTechnologyServices ctsh:CommunicationMediaandTechnology100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ctsh:ConsultingAndTechnologyServices, ctsh:FinancialServices


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1012967827984933947950972947913913902885871
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax22.122.019.823.223.322.422.222.922.922.222.122.122.122.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax22.122.019.823.223.322.422.222.922.922.222.122.122.122.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ctsh:ConsultingAndTechnologyServices ctsh:FinancialServices100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ctsh:ConsultingAndTechnologyServices, ctsh:HealthcareSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value769745733725666662679634613638657645613638
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax16.816.917.517.116.615.715.814.914.815.515.915.815.316.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax16.816.917.517.116.715.715.814.914.815.515.915.815.316.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ctsh:ConsultingAndTechnologyServices ctsh:HealthcareSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ctsh:ConsultingAndTechnologyServices, ctsh:ProductsandResources


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value668616575564520590590592561552532512499481
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax14.614.013.713.313.014.013.813.913.513.412.912.612.512.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax14.614.013.713.313.014.013.813.913.513.412.912.612.512.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ctsh:ConsultingAndTechnologyServices ctsh:ProductsandResources100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ctsh:OutsourcingServices, ctsh:CommunicationMediaandTechnology


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value281261260247242278285283287289283270252231
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.15.96.25.86.06.66.76.76.97.06.96.66.35.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.15.96.25.86.06.66.76.76.97.06.96.66.35.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ctsh:OutsourcingServices ctsh:CommunicationMediaandTechnology100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ctsh:OutsourcingServices, ctsh:FinancialServices


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value490491478485463504518520526523538562584590
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.711.211.411.411.611.912.112.212.712.713.013.814.615.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.711.211.411.411.611.912.112.212.712.713.013.814.615.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ctsh:OutsourcingServices ctsh:FinancialServices100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ctsh:OutsourcingServices, ctsh:HealthcareSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value556543537506491532542541521527545544543483
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.112.312.811.912.312.612.712.712.612.813.213.313.612.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.112.312.811.912.312.612.712.712.612.813.213.313.612.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ctsh:OutsourcingServices ctsh:HealthcareSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ctsh:OutsourcingServices, ctsh:ProductsandResources


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value387382373363347364373374366362359351341340
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.48.78.98.68.78.68.78.88.88.88.78.68.58.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.48.78.98.68.78.68.78.88.88.88.78.68.58.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ctsh:OutsourcingServices ctsh:ProductsandResources100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementBusinessSegments

ctsh:CommunicationMediaandTechnology


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value703657661616580626632615607595585562541509
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax15.314.915.814.514.514.814.814.514.714.514.213.813.513.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax15.314.915.814.514.514.814.814.514.714.514.213.813.513.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ctsh:CommunicationMediaandTechnology100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ctsh:FinancialServices


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value15021458130514691396145114681492147314361451146414691461
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax32.833.131.234.634.934.334.335.135.634.935.135.936.737.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax32.833.131.234.634.934.334.335.135.634.935.135.936.737.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ctsh:FinancialServices100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ctsh:HealthcareSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value13251288127012311157119412211175113411651202118911561121
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax28.929.330.429.028.928.328.527.727.428.329.129.228.928.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax28.929.330.429.028.928.328.527.727.428.329.129.228.928.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ctsh:HealthcareSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ctsh:ProductsandResources


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1055998948927867954963966927914891863840821
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax23.022.722.721.821.722.622.522.722.422.221.621.221.021.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax23.022.722.721.821.722.622.522.722.422.221.621.221.021.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ctsh:ProductsandResources100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical

country:GB


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value403370339345314337337325322329330325309310287301288274273293310298305299297285278276266277245246233216
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.88.48.18.17.88.07.97.77.88.08.08.07.77.97.58.07.87.77.98.59.29.39.59.49.69.810.210.710.611.510.410.710.810.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.88.48.18.17.88.07.97.77.88.08.08.07.77.97.58.07.87.77.98.59.29.39.59.49.69.810.210.710.611.510.410.710.810.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:GB100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ctsh:EuropeexcludingUnitedKingdom


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value482456360437419437429430427405410398381374345327291285261244236226215209204190
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.510.48.610.310.510.310.010.110.39.99.99.89.59.69.08.77.98.07.57.17.07.16.76.66.66.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.510.48.610.310.510.310.010.110.39.99.99.89.59.69.08.77.98.07.57.17.07.16.76.66.66.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ctsh:EuropeexcludingUnitedKingdom100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ctsh:RestofWorld


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value328292279282261261277270253253
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.26.66.76.66.56.26.56.46.16.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.26.66.76.66.56.26.56.46.16.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ctsh:RestofWorld100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:Europe


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value885826699782733774766755749734740723690684
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax19.318.816.718.418.318.317.917.818.117.917.917.717.217.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax19.318.816.718.418.318.317.917.818.117.917.917.717.217.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:Europe100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:NorthAmerica


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value33723283320631793006319032413223313931233144310730672975
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax73.574.676.674.975.275.575.775.975.876.076.176.276.676.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax73.574.676.674.975.175.575.775.975.876.076.176.276.676.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NorthAmerica100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

country:GB, ctsh:CommunicationMediaandTechnology


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value11299958679848477778191858484
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.42.22.32.02.02.02.01.81.92.02.22.12.12.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.42.22.32.02.02.02.01.81.92.02.22.12.12.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:GB ctsh:CommunicationMediaandTechnology100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

country:GB, ctsh:FinancialServices


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value130125110123110120119117119129124127114116
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.82.82.62.92.82.82.82.82.93.13.03.12.83.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.82.82.62.92.82.82.82.82.93.13.03.12.83.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:GB ctsh:FinancialServices100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

country:GB, ctsh:HealthcareSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4540414036404036292523232223
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.00.91.00.90.90.90.90.80.70.60.60.60.50.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.00.91.00.90.90.90.90.80.70.60.60.60.50.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:GB ctsh:HealthcareSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

country:GB, ctsh:ProductsandResources


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value116106939689939495979492908987
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.52.42.22.32.22.22.22.22.32.32.22.22.22.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.52.42.22.32.22.22.22.22.32.32.22.22.22.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:GB ctsh:ProductsandResources100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ctsh:EuropeexcludingUnitedKingdom, ctsh:CommunicationMediaandTechnology


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4443554341384238434649504642
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.01.01.31.01.00.91.00.91.01.11.21.21.11.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.01.01.31.01.00.91.00.91.01.11.21.21.11.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ctsh:EuropeexcludingUnitedKingdom ctsh:CommunicationMediaandTechnology100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ctsh:EuropeexcludingUnitedKingdom, ctsh:FinancialServices


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value18619275181182191180192194162169170165162
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.14.41.84.34.54.54.24.54.73.94.14.24.14.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.14.41.84.34.54.54.24.54.73.94.14.24.14.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ctsh:EuropeexcludingUnitedKingdom ctsh:FinancialServices100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ctsh:EuropeexcludingUnitedKingdom, ctsh:HealthcareSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value120118117116102999485808279696161
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.62.72.82.72.52.32.22.01.92.01.91.71.51.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.62.72.82.72.52.32.22.01.92.01.91.71.51.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ctsh:EuropeexcludingUnitedKingdom ctsh:HealthcareSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ctsh:EuropeexcludingUnitedKingdom, ctsh:ProductsandResources


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1321031139794109113115110115113109109109
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.92.32.72.32.42.62.62.72.72.82.72.72.72.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.92.32.72.32.42.62.62.72.72.82.72.72.72.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ctsh:EuropeexcludingUnitedKingdom ctsh:ProductsandResources100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ctsh:RestofWorld, ctsh:CommunicationMediaandTechnology


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value78646061515352524746
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.71.51.41.41.31.31.21.21.11.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.71.51.41.41.31.31.21.21.11.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ctsh:RestofWorld ctsh:CommunicationMediaandTechnology100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ctsh:RestofWorld, ctsh:FinancialServices


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value137128130132126128137131125127
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.02.93.13.13.13.03.23.13.03.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.02.93.13.13.13.03.23.13.03.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ctsh:RestofWorld ctsh:FinancialServices100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ctsh:RestofWorld, ctsh:HealthcareSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value29292221201724181916
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.60.70.50.50.50.40.60.40.50.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.60.70.50.50.50.40.60.40.50.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ctsh:RestofWorld ctsh:HealthcareSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ctsh:RestofWorld, ctsh:ProductsandResources


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value84716768646364696264
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.81.61.61.61.61.51.51.61.51.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.81.61.61.61.61.51.51.61.51.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ctsh:RestofWorld ctsh:ProductsandResources100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:Europe, ctsh:CommunicationMediaandTechnology


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value156142150129120122126115120127140135130126
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.43.23.63.03.02.92.92.72.93.13.43.33.23.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.43.23.63.03.02.92.92.72.93.13.43.33.23.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:Europe ctsh:CommunicationMediaandTechnology100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:Europe, ctsh:FinancialServices


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value316317185304292311299309313291293297279278
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.97.24.47.27.37.47.07.37.67.17.17.37.07.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.97.24.47.27.37.47.07.37.67.17.17.37.07.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:Europe ctsh:FinancialServices100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:Europe, ctsh:HealthcareSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value165158158156138139134121109107102928384
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.63.63.83.73.53.33.12.82.62.62.52.32.12.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.63.63.83.73.53.33.12.82.62.62.52.32.12.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:Europe ctsh:HealthcareSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:Europe, ctsh:ProductsandResources


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value248209206193183202207210207209205199198196
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.44.74.94.54.64.84.84.95.05.15.04.94.95.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.44.74.94.54.64.84.84.95.05.15.04.94.95.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:Europe ctsh:ProductsandResources100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:NorthAmerica, ctsh:CommunicationMediaandTechnology


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value469451451426409451454448440422397381366336
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.210.210.810.010.210.710.610.510.610.39.69.39.18.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.210.210.810.010.210.710.610.510.610.39.69.39.18.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NorthAmerica ctsh:CommunicationMediaandTechnology100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:NorthAmerica, ctsh:FinancialServices


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value104910139901033978101210321052103510181029103310561044
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax22.923.023.724.324.424.024.124.825.024.824.925.326.426.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax22.923.023.724.324.424.024.124.825.024.824.925.326.426.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NorthAmerica ctsh:FinancialServices100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:NorthAmerica, ctsh:HealthcareSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1131110110901054999103810631036100610421087108410601023
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax24.725.026.124.825.024.624.824.424.325.426.326.626.526.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax24.725.026.124.825.024.624.824.424.325.426.326.626.526.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NorthAmerica ctsh:HealthcareSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:NorthAmerica, ctsh:ProductsandResources


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value723718675666620689692687658641631609585572
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax15.816.316.115.715.516.316.216.215.915.615.314.914.614.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax15.816.316.115.715.516.316.216.215.915.615.314.914.614.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NorthAmerica ctsh:ProductsandResources100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Revenues

us-gaap:Revenues

us-gaap:Revenues


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value458544014184424340004225428442484141411041294078400639123828376636703546346234533369320232323187308529112742258125172422235523052161202019481891179517111663160014851371131012161105959902853776745
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Selling General And Administrative Expense

us-gaap:SellingGeneralAndAdministrativeExpense

us-gaap:SellingGeneralAndAdministrativeExpense


Selling
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value881827874804711711676771768873776734805711700674709686730700653646658627612610562506482485450443420413401384396374352353326296279262234194190193170166
Percentage of SellingGeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax19.218.820.918.917.816.815.818.118.521.218.818.020.118.218.317.919.319.321.120.319.420.220.419.719.821.020.519.619.220.019.119.219.520.420.620.322.121.921.222.122.021.621.421.621.220.321.122.721.922.4

Assets

us-gaap:Assets

us-gaap:Assets


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value16829166601692318787182161742916204158441551716096159131527414806150451522114580139381362914262137161314012735130651226711797113831171892278687827982087617701267096521610756545668550751044916463745833338
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Liabilities

us-gaap:Liabilities

us-gaap:Liabilities


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value5624562360877647724468165182514249604960448942964158405745523601345536463534342432773123378734403256320439781845169616562073196816881493166715341561130015551164964873998685
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets33.433.836.040.739.839.132.032.532.030.828.228.128.127.029.924.724.826.824.825.024.924.529.028.027.628.234.020.019.520.025.325.824.122.325.625.127.623.028.222.819.618.821.820.5

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value16829166601692318787182161742916204158441551716096159131527414806150451522114580139381362914262137161314012735130651226711797113831171892278687827982087617701267096521610756545668550751044916463745833338
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-312007-12-31
Value11205110371083611140109721061311022107021055711136114241097810648109881066910979104839983107281029298629612927888278540817877407381699066226135564853235215485445724092436739523939395137643584265319651468
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets66.666.264.059.360.260.968.067.568.069.271.871.971.973.070.175.375.273.275.275.075.175.571.072.072.471.866.080.080.580.074.774.275.977.774.474.972.477.071.877.280.481.278.279.50.00.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312013-12-31
Value38515531-27.0-65.026204433-3.0-90.0-8.079115951171183940-0.38.0-11.7-44.4-37.6-86.7-300.0
Percentage of StockholdersEquity0.30.50.50.3-0.2-0.60.20.20.40.3-0.0-0.8-0.10.71.10.91.11.20.40.4-0.00.1-0.1-0.5-0.4-1.1-4.9
Percentage of Assets0.20.30.30.2-0.1-0.40.20.10.30.2-0.0-0.6-0.10.50.80.70.80.90.30.3-0.00.1-0.1-0.4-0.3-0.7-3.7
Percentage of Assets us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value8281110-40.0-188.0-264.0-38.0-159.0-70.0-74.0-114.0-188.0-94.063704433-17.0-114.0-56.2-95.7-62.0-106.2-113.3-90.5-123.068-276.259-239.683-325.3943520-9.47915
Percentage of StockholdersEquity0.70.71.0-0.4-1.7-2.5-0.3-1.5-0.7-0.7-1.0-1.7-0.90.60.70.40.3-0.2-1.1-0.5-1.0-0.6-1.1-1.3-1.1-1.6-4.5-4.9-8.21.00.8-0.51.0
Percentage of Assets0.50.50.7-0.2-1.0-1.5-0.2-1.0-0.5-0.5-0.7-1.2-0.60.40.50.30.2-0.1-0.8-0.4-0.7-0.5-0.8-0.9-0.8-1.1-3.4-3.7-5.90.80.60.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedTranslationAdjustment


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312013-12-31
Value443055-71.0-161.0-199.0-64.0-179.0-114.0-105.0-103.0-84.0-72.0-1.0-38.0-49.0-82.0-132.0-149.0-98.5-99.0-70.0-89.9-69.2-52.4-34.824
Percentage of StockholdersEquity0.40.30.5-0.6-1.5-1.9-0.6-1.7-1.1-0.9-0.9-0.8-0.7-0.0-0.4-0.4-0.8-1.3-1.4-1.0-1.0-0.7-1.0-0.8-0.6-0.40.4
Percentage of Assets0.30.20.3-0.4-0.9-1.1-0.4-1.1-0.7-0.7-0.6-0.5-0.5-0.0-0.2-0.3-0.6-1.0-1.0-0.7-0.8-0.5-0.7-0.6-0.4-0.30.3
Percentage of Assets us-gaap:AccumulatedTranslationAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value324432338341333538644711955634920812859358453555546457692846664541450
Percentage of StockholdersEquity0.30.40.30.30.80.40.30.30.40.60.41.10.50.60.51.91.20.63.34.97.28.99.417.523.625.027.630.7
Percentage of Assets0.20.30.20.20.50.20.20.20.20.40.30.80.40.40.31.40.90.42.53.54.76.77.012.618.519.90.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value5.05.05.05.05.05.05.06.06.06.06.06.06.06.06.06.06.06.06.06.16.0943.0393.0173.0313.0392.9722.9172.88
Percentage of StockholdersEquity0.00.00.00.00.00.00.00.10.10.10.10.10.10.10.10.10.10.10.10.10.10.00.10.10.10.10.10.2
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.00.00.10.10.10.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value110861090710689111421107210831110221082010583111401148511041106811085610544107211031699351047889257301586246333582269819651430999
Percentage of StockholdersEquity98.998.898.6100.0100.9102.1100.0101.1100.2100.0100.5100.6100.398.898.897.798.499.597.796.294.395.595.590.675.374.172.868.1
Percentage of Assets65.965.563.259.360.862.168.068.368.269.272.272.372.172.269.373.574.072.973.568.362.371.471.165.058.958.90.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Assets Current

us-gaap:AssetsCurrent

us-gaap:AssetsCurrent


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value64516595685186198531832576117391720678838677872783038990911185578099784286008199775875707908723767716406675072606740629061475739513348364814454141524196408538123757353535182307
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets38.339.640.545.946.847.847.046.646.449.054.557.156.159.859.958.758.157.560.359.859.059.460.559.057.456.357.678.777.676.074.975.373.272.173.874.473.474.074.274.776.476.276.869.1

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashAndCashEquivalentsAtCarryingValue


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value136819732680443644223886264523431660950116113399011440192515771157130820341550168415232125147610891271201026171992193522132031167814741570132410501328131011811193129315401317103910801100735339
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets8.111.815.823.624.322.316.314.810.75.97.38.86.19.612.610.88.39.614.311.312.812.016.312.09.211.217.228.422.923.427.026.723.922.024.121.718.623.423.823.124.327.933.60.00.00.033.00.00.0

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-03-312017-12-312017-03-31
Value1368197326804436442238862645234316609501161159919251308
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets8.111.815.823.624.322.316.314.810.75.97.310.612.69.6

Short Term Investments

us-gaap:ShortTermInvestments

us-gaap:ShortTermInvestments


Short
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value48218544139160396779734134327183350342433463390313131363221296631353308279629272824257424772078176420002136192815341329122212691293130712951162112111101076874685298
Percentage of ShortTermInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.91.10.30.70.92.34.84.68.716.921.122.422.622.520.621.523.121.822.024.121.323.021.621.021.018.315.121.724.623.318.717.517.418.919.821.422.920.520.421.721.918.915.08.9

Accounts Receivable Net Current

us-gaap:AccountsReceivableNetCurrent

us-gaap:AccountsReceivableNetCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value34193232308731183208322032563438338633773257318732043145286528892680264425562492242723192252213521622059196818091822170316481637156014951345136312961234117911041075994901626
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets20.319.418.216.617.618.520.121.721.821.020.520.921.620.918.819.819.219.417.918.218.518.217.217.418.318.116.819.621.020.620.121.522.322.320.622.322.921.821.421.621.921.519.718.8

Other Assets Current

us-gaap:OtherAssetsCurrent

us-gaap:OtherAssetsCurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value118212051040926741823931876817838909777852856833552632529526425399367337264322336352234257254268218220206219166198189225144180176181125
Percentage of OtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets7.07.26.14.94.14.75.75.55.35.25.75.15.85.75.53.84.53.93.73.13.02.92.62.22.73.03.02.53.03.13.32.93.13.13.42.73.53.34.12.83.73.84.03.8

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross

us-gaap:PropertyPlantAndEquipmentGross


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value3573335131842840262423502099180015451213922756
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets21.120.720.018.718.418.017.921.923.722.020.122.6

us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType

ctsh:ComputerSoftware


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value840820721594470
Percentage of PropertyPlantAndEquipmentGross23.524.522.620.917.9
Percentage of Assets5.05.14.53.93.3
Percentage of Assets ctsh:ComputerSoftware0.00.00.00.00.0

us-gaap:Building


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value783790839836823804605444
Percentage of PropertyPlantAndEquipmentGross21.923.626.429.431.434.228.824.7
Percentage of Assets4.64.95.35.55.86.25.25.4
Percentage of Assets us-gaap:Building0.00.00.00.00.00.00.00.0

us-gaap:ComputerEquipment


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value636516412364379
Percentage of PropertyPlantAndEquipmentGross17.815.412.912.814.4
Percentage of Assets3.83.22.62.42.7
Percentage of Assets us-gaap:ComputerEquipment0.00.00.00.00.0

us-gaap:ConstructionInProgress


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value122133156145169114304360
Percentage of PropertyPlantAndEquipmentGross3.44.04.95.16.44.914.520.0
Percentage of Assets0.70.81.01.01.20.92.64.4
Percentage of Assets us-gaap:ConstructionInProgress0.00.00.00.00.00.00.00.0

us-gaap:FurnitureAndFixtures


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value761702639511431384322273
Percentage of PropertyPlantAndEquipmentGross21.320.920.118.016.416.415.415.2
Percentage of Assets4.54.34.03.43.02.92.83.3
Percentage of Assets us-gaap:FurnitureAndFixtures0.00.00.00.00.00.00.00.0

us-gaap:Land


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value7.011191923222222
Percentage of PropertyPlantAndEquipmentGross0.20.30.60.70.91.01.11.3
Percentage of Assets0.00.10.10.10.20.20.20.3
Percentage of Assets us-gaap:Land0.00.00.00.00.00.00.00.0

us-gaap:LeaseholdImprovements


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value424379338308266263246211
Percentage of PropertyPlantAndEquipmentGross11.911.310.610.810.111.211.811.8
Percentage of Assets2.52.32.12.01.92.02.12.6
Percentage of Assets us-gaap:LeaseholdImprovements0.00.00.00.00.00.00.00.0

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value2322204217901516131312551191113510791013957895852807768740719680646610573551515482455429402377352274
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets13.712.611.210.09.29.29.18.98.38.38.17.97.38.88.88.98.88.99.29.18.89.09.18.58.38.48.28.17.78.2

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:PropertyPlantAndEquipmentNet


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-31
Value1225125012511313134513221309131813371314139413621345133313241304128413061311132312871270127112781277126812471101108610901081101110171008971878837784758664614601570481455
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets7.37.57.47.07.47.68.18.38.68.28.88.99.18.98.78.99.29.69.29.69.810.09.710.410.811.110.611.912.513.213.213.314.515.014.914.414.813.813.813.012.513.012.414.40.0

us-gaap:PropertyPlantAndEquipmentNet us-gaap:StatementGeographical

ctsh:RestofWorld


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-312017-12-31
Value752763764792817776760853901
Percentage of PropertyPlantAndEquipmentNet61.461.061.160.360.758.758.161.268.1
Percentage of Assets4.54.64.54.24.54.54.75.45.9
Percentage of Assets ctsh:RestofWorld0.00.00.00.00.00.00.00.00.0

srt:Europe


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-31
Value848088109105100104971031101056352
Percentage of PropertyPlantAndEquipmentNet6.96.47.08.37.87.67.97.47.78.47.54.84.0
Percentage of Assets0.50.50.50.60.60.60.60.60.70.70.70.40.4
Percentage of Assets srt:Europe0.00.00.00.00.00.00.00.00.00.00.00.00.0

srt:NorthAmerica


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-31
Value389407399412423446445451454420436360279
Percentage of PropertyPlantAndEquipmentNet31.832.631.931.431.433.734.034.234.032.031.327.221.3
Percentage of Assets2.32.42.42.22.32.62.72.82.92.62.72.42.0
Percentage of Assets srt:NorthAmerica0.00.00.00.00.00.00.00.00.00.00.00.00.0

Long Term Investments

us-gaap:LongTermInvestments

us-gaap:LongTermInvestments


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value433439440441429433177980798093808323526219811062
Percentage of LongTermInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.62.62.62.32.42.50.10.50.50.50.50.60.50.61.51.81.40.80.4

Goodwill

us-gaap:Goodwill

us-gaap:Goodwill


Goodwill
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-31
Value545752195031493143914014397936943651363834813037303627132704260825762563255424822457246124042403240524032413437449445444417412407309301289289288289224224223192154
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets32.431.329.726.224.123.024.623.323.522.621.919.920.518.017.817.918.518.817.918.118.719.318.419.620.421.120.64.75.25.45.45.55.96.14.74.95.15.15.25.74.64.84.95.80.0

us-gaap:Goodwill us-gaap:StatementBusinessSegments

ctsh:CommunicationsMediaandTechnology


Goodwillus-gaap:
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value564267217937959
Percentage of Goodwill11.26.76.23.43.12.5
Percentage of Assets3.31.61.40.60.60.5
Percentage of Assets ctsh:CommunicationsMediaandTechnology0.00.00.00.00.00.0

ctsh:FinancialServices


Goodwillus-gaap:
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value93270041126522720220420813712682
Percentage of Goodwill18.517.611.89.88.98.48.547.044.543.836.8
Percentage of Assets5.54.32.61.71.61.61.72.52.12.31.8
Percentage of Assets ctsh:FinancialServices0.00.00.00.00.00.00.00.00.00.00.0

ctsh:HealthcareSegment


Goodwillus-gaap:
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value275525952469210620892076
Percentage of Goodwill54.865.270.977.981.886.3
Percentage of Assets16.316.015.513.814.615.9
Percentage of Assets ctsh:HealthcareSegment0.00.00.00.00.00.0

ctsh:ProductsandResources


Goodwillus-gaap:
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value78041738424015967
Percentage of Goodwill15.510.511.08.96.22.8
Percentage of Assets4.62.62.41.61.10.5
Percentage of Assets ctsh:ProductsandResources0.00.00.00.00.00.0

Intangible Assets Net Excluding Goodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill


Intangible
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value1219111010461087102610051041119211611185115010211060955981957894923951936961862864881906928953109120124131118121122878786939710287818575
Percentage of IntangibleAssetsNetExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets7.26.76.25.85.65.86.47.57.57.47.26.77.26.36.46.66.46.86.76.87.36.86.67.27.78.28.11.21.41.51.61.61.71.81.31.41.51.61.82.01.81.81.92.3

Finite Lived Intangible Assets Net

us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:CustomerRelationships


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value84379187970162649253211575838071
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.04.95.54.64.43.84.51.41.21.51.82.1
Percentage of Assets us-gaap:CustomerRelationships0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:DevelopedTechnologyRights


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value1021491681932362793231.2562.0182.8832.5283.085
Percentage of FiniteLivedIntangibleAssetsNet12.118.819.127.537.756.760.81.12.73.43.14.3
Percentage of Assets0.60.91.11.31.72.12.80.00.00.10.10.1
Percentage of Assets us-gaap:DevelopedTechnologyRights0.00.00.00.00.00.00.00.00.00.00.00.0

Deferred Tax Assets Liabilities Net

us-gaap:DeferredTaxAssetsLiabilitiesNet

us-gaap:DeferredTaxAssetsLiabilitiesNet


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value239550259272419344222456377269199154
Percentage of DeferredTaxAssetsLiabilitiesNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.43.41.61.82.92.61.95.65.84.94.44.6

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1004980101310041002927926905847809
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.05.96.05.35.55.35.75.75.55.0

Other Assets Noncurrent

us-gaap:OtherAssetsNoncurrent

us-gaap:OtherAssetsNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value732760846829823809736773767724689643615577448428430427359328286275268262277223209175166187183169160169160143120139113100119827549
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.34.65.04.44.54.64.54.94.94.54.34.24.23.82.92.93.13.12.52.42.22.22.12.12.42.01.81.91.92.32.22.22.32.52.52.32.12.52.12.02.41.81.61.5

Accounts Payable Current

us-gaap:AccountsPayableCurrent

us-gaap:AccountsPayableCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value351349389420359289239246254262215223217293210186179189175171164213165160169181145130119176113114941321081111041097278891177554
Percentage of AccountsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.12.12.32.22.01.71.51.61.61.61.41.51.51.91.41.31.31.41.21.31.31.71.31.31.41.61.21.41.42.11.41.51.32.01.71.81.81.91.31.51.82.51.61.6

Accrued Income Taxes Current

us-gaap:AccruedIncomeTaxesCurrent

us-gaap:AccruedIncomeTaxesCurrent


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value251134122330197152111108130162158174744823151210.0143417
Percentage of AccruedIncomeTaxesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.20.61.81.10.90.70.70.81.01.01.20.50.30.20.10.10.10.10.30.1

Liabilities Current

us-gaap:LiabilitiesCurrent

us-gaap:LiabilitiesCurrent


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value3183315035403296321228722983291928242720277726932537246928392600241525852418230021202050271321281956188425921741156715021774160213571225137712751151102112091040887801930646
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets18.918.920.917.517.616.518.418.418.216.917.517.617.116.418.717.817.319.017.016.816.116.120.817.316.616.622.118.918.018.221.621.019.418.321.120.920.418.022.020.418.017.320.319.4

Operating Lease Liability Current

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OperatingLeaseLiabilityCurrent


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value204202211213206197202195201184
Percentage of OperatingLeaseLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.21.21.21.11.11.11.21.21.31.1

Other Liabilities Current

us-gaap:OtherLiabilitiesCurrent

us-gaap:OtherLiabilitiesCurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value3083764613333583843803663633593693293223333252752622963152752391771821741761791841571471381211081059291898881889467647866
Percentage of OtherLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.82.32.71.82.02.22.32.32.32.22.32.22.22.22.11.91.92.22.22.01.81.41.41.41.51.61.61.71.71.71.51.41.51.41.41.51.61.41.61.91.41.41.72.0

Long Term Debt

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

us-gaap:LongTermDebt

ctsh:CreditAgreement, us-gaap:LoansPayable


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value685694703713722731741
Percentage of LongTermDebt100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.14.24.23.84.04.24.6
Percentage of Assets ctsh:CreditAgreement us-gaap:LoansPayable0.00.00.00.00.00.00.0

Long Term Debt Noncurrent

us-gaap:LongTermDebtNoncurrent

us-gaap:LongTermDebtNoncurrent


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value6456546632412242124307007097187277366246496736987237477727978218408588819009129259370.0
Percentage of LongTermDebtNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets3.83.93.912.813.313.94.34.54.64.54.64.14.44.54.65.05.45.75.66.06.46.76.77.37.78.18.00.0

Deferred Income Tax Liabilities Net

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:DeferredIncomeTaxLiabilitiesNet


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value230204206310283135
Percentage of DeferredIncomeTaxLiabilitiesNet100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.41.21.21.70.20.20.2

Other Liabilities Noncurrent

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OtherLiabilitiesNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value3133343683493072292181811611502532602421991811591551551621401381381391291031111168510813327735231625228725440727634212073686238
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.92.02.21.91.71.31.31.11.00.91.61.71.61.31.21.11.11.11.11.01.11.11.11.10.91.01.00.91.31.63.44.64.53.84.44.27.24.96.22.41.51.51.41.2

Operating Lease Liability Noncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value842821846820802734745734679651
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.04.95.04.44.44.24.64.64.44.0

Lessee Operating Lease Liability Payments Due Year Two

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo


Lessee
Period End2020-12-31
Value218
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo100.0
Percentage of Assets1.3

Lessee Operating Lease Liability Payments Due Year Three

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree


Lessee
Period End2020-12-31
Value180
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree100.0
Percentage of Assets1.1

Lessee Operating Lease Liability Payments Due Year Four

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour


Lessee
Period End2020-12-31
Value143
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour100.0
Percentage of Assets0.8

Lessee Operating Lease Liability Payments Due Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive


Lessee
Period End2020-12-31
Value121
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive100.0
Percentage of Assets0.7

Lessee Operating Lease Liability Payments Due After Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive


Lessee
Period End2020-12-31
Value349
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive100.0
Percentage of Assets2.1

Operating Lease Liability

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiability


Operating
Period End2020-12-31
Value1057
Percentage of OperatingLeaseLiability100.0
Percentage of Assets6.2

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue


Lessee
Period End2020-12-31
Value1271
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue100.0
Percentage of Assets7.5

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount


Lessee
Period End2020-12-31
Value214
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount100.0
Percentage of Assets1.3

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-312007-12-31
Value11205110371083611140109721061311022107021055711136114241097810648109881066910979104839983107281029298629612927888278540817877407381699066226135564853235215485445724092436739523939395137643584265319651468
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets66.666.264.059.360.260.968.067.568.069.271.871.971.973.070.175.375.273.275.275.075.175.571.072.072.471.866.080.080.580.074.774.275.977.774.474.972.477.071.877.280.481.278.279.50.00.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312013-12-31
Value38515531-27.0-65.026204433-3.0-90.0-8.079115951171183940-0.38.0-11.7-44.4-37.6-86.7-300.0
Percentage of StockholdersEquity0.30.50.50.3-0.2-0.60.20.20.40.3-0.0-0.8-0.10.71.10.91.11.20.40.4-0.00.1-0.1-0.5-0.4-1.1-4.9
Percentage of Assets0.20.30.30.2-0.1-0.40.20.10.30.2-0.0-0.6-0.10.50.80.70.80.90.30.3-0.00.1-0.1-0.4-0.3-0.7-3.7
Percentage of Assets us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value8281110-40.0-188.0-264.0-38.0-159.0-70.0-74.0-114.0-188.0-94.063704433-17.0-114.0-56.2-95.7-62.0-106.2-113.3-90.5-123.068-276.259-239.683-325.3943520-9.47915
Percentage of StockholdersEquity0.70.71.0-0.4-1.7-2.5-0.3-1.5-0.7-0.7-1.0-1.7-0.90.60.70.40.3-0.2-1.1-0.5-1.0-0.6-1.1-1.3-1.1-1.6-4.5-4.9-8.21.00.8-0.51.0
Percentage of Assets0.50.50.7-0.2-1.0-1.5-0.2-1.0-0.5-0.5-0.7-1.2-0.60.40.50.30.2-0.1-0.8-0.4-0.7-0.5-0.8-0.9-0.8-1.1-3.4-3.7-5.90.80.60.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedTranslationAdjustment


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312013-12-31
Value443055-71.0-161.0-199.0-64.0-179.0-114.0-105.0-103.0-84.0-72.0-1.0-38.0-49.0-82.0-132.0-149.0-98.5-99.0-70.0-89.9-69.2-52.4-34.824
Percentage of StockholdersEquity0.40.30.5-0.6-1.5-1.9-0.6-1.7-1.1-0.9-0.9-0.8-0.7-0.0-0.4-0.4-0.8-1.3-1.4-1.0-1.0-0.7-1.0-0.8-0.6-0.40.4
Percentage of Assets0.30.20.3-0.4-0.9-1.1-0.4-1.1-0.7-0.7-0.6-0.5-0.5-0.0-0.2-0.3-0.6-1.0-1.0-0.7-0.8-0.5-0.7-0.6-0.4-0.30.3
Percentage of Assets us-gaap:AccumulatedTranslationAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value324432338341333538644711955634920812859358453555546457692846664541450
Percentage of StockholdersEquity0.30.40.30.30.80.40.30.30.40.60.41.10.50.60.51.91.20.63.34.97.28.99.417.523.625.027.630.7
Percentage of Assets0.20.30.20.20.50.20.20.20.20.40.30.80.40.40.31.40.90.42.53.54.76.77.012.618.519.90.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value5.05.05.05.05.05.05.06.06.06.06.06.06.06.06.06.06.06.06.06.16.0943.0393.0173.0313.0392.9722.9172.88
Percentage of StockholdersEquity0.00.00.00.00.00.00.00.10.10.10.10.10.10.10.10.10.10.10.10.10.10.00.10.10.10.10.10.2
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.00.00.10.10.10.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value110861090710689111421107210831110221082010583111401148511041106811085610544107211031699351047889257301586246333582269819651430999
Percentage of StockholdersEquity98.998.898.6100.0100.9102.1100.0101.1100.2100.0100.5100.6100.398.898.897.798.499.597.796.294.395.595.590.675.374.172.868.1
Percentage of Assets65.965.563.259.360.862.168.068.368.269.272.272.372.172.269.373.574.072.973.568.362.371.471.165.058.958.90.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value5000000.05000000.05000000.05000000.05000000.05000000.05000000.06000000.06000000.06000000.06000000.06000000.06000000.06000000.06000000.06000000.06000000.06000000.06000000.06100000.06100000.06100000.06100000.06100000.06100000.06100000.06094000.06089000.06079000.06084000.06078000.06048000.06026000.06050000.06034000.05998000.05986000.06088000.06062000.06042000.06072000.06084000.06078000.05944000.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.2

Additional Paid In Capital

us-gaap:AdditionalPaidInCapital

us-gaap:AdditionalPaidInCapital


Additional
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value324432338341333538644711955634920812859358279333301453432520607555560513572546482426503457404407731692644756813846664
Percentage of AdditionalPaidInCapital100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.20.30.20.20.50.20.20.20.20.40.30.80.40.40.31.40.90.42.52.02.52.43.53.54.45.34.76.15.96.96.76.36.17.57.06.67.212.912.612.615.417.618.519.9

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


Retained
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value110861090710689111421107210831110221082010583111401148511041106811085610544107211031699351047810063961893668925850181047684730169386583621158625538521849174633435540783826358233423115290726981965
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets65.965.563.259.360.862.168.068.368.269.272.272.372.172.269.373.574.072.973.573.473.273.568.369.368.767.562.375.275.875.071.472.774.473.371.171.372.167.565.065.563.462.758.958.9

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value8281110-40.0-188.0-264.0-38.0-159.0-70.0-74.0-114.0-188.0-94.063704433-17.0-114.0-56.2-95.7-61.6-106.2-113.3-90.5-119.3-123.068-123.658-111.46-167.285-276.259-375.089-324.602-208.431-239.683-190.043-396.741-193.331-325.394-50.68176393520
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.50.50.7-0.2-1.0-1.5-0.2-1.0-0.5-0.5-0.7-1.2-0.60.40.50.30.2-0.1-0.8-0.4-0.7-0.5-0.8-0.9-0.8-1.0-1.1-1.3-1.3-2.0-3.4-4.9-4.6-3.1-3.7-3.1-7.0-3.4-5.9-1.01.60.90.80.6

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

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue


Adjustments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value67625865555254666869715960525554
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value67625865555254666869715960525554
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value5411818989259794979387175752697028626403888367735212775985943596869081745618932458340815750547836573361384324101285329215453922341352.328
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.84.121.521.824.511.821.916.913.96.517.021.116.09.921.820.514.27.817.317.210.72.121.325.714.86.511.822.616.26.521.520.816.93.618.620.318.15.917.120.614.53.329.919.312.20.2

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-721.0-538.0-49.0-658.0-259.0-272.0-375.03401267356-550.0-266.0-584.0-227.0-160.0-124.0-389.091-90.3-612.4-31.9-228.4-340.2-176.9-489.5-364.0-2534.05864-257.534-433.654-352.387-152.602-39.9-185.874-140.712-86.531-247.316-95.487-173.232-180.646-243.746-252.657-154.305-34.6-200.844-57.141
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-15.7-12.2-1.2-15.5-6.5-6.4-8.88.030.68.7-13.3-6.5-14.6-5.8-4.2-3.3-10.62.6-2.6-17.7-0.9-7.1-10.5-5.6-15.9-12.5-92.42.5-10.2-17.9-15.0-6.6-1.8-9.2-7.2-4.6-13.8-5.6-10.4-11.3-16.4-18.4-11.8-2.8-18.2-6.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-428.0-340.0-2626.0-347.0-171.01135-253.0-340.0-1137.0-839.0-325.0-146.0-734.0-488.0-333.0-231.0-297.0-1124.010-118.5-143.3-467.8306-248.5-149.1-557.31611-8.4-93.415-6.5733028-106.3131624-25.649-348.527.11721-146.924-80.763-49.044-14.468612943
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-9.3-7.7-62.8-8.2-4.326.9-5.9-8.0-27.5-20.4-7.9-3.6-18.3-12.5-8.7-6.1-8.1-31.70.3-3.4-4.3-14.69.5-7.8-4.8-19.158.8-0.3-3.7-0.31.31.2-4.90.81.2-1.4-19.40.41.3-9.2-5.4-3.6-1.15.02.74.5

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

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-03-312017-03-31
Value-605.0-707.0-1756.0145361241302683710-211.0-326.0-726.0
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-13.2-16.1-42.00.313.429.47.016.117.1-5.1-8.3-20.5

Deferred Income Tax Expense Benefit

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:DeferredIncomeTaxExpenseBenefit


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-3.0122-106.0383-74.0-19.0-103.0-23.0-138.0-42.0-38.0-5.0492.0170-54.0-1.09.0-46.8-70.3-42.568-18.8-70.4-65.929-56.207-45.813-33.8336-65.35-21.847-24.02723-56.018-79.01925-8.18217-24.385-21.7219-91.630.8611523
Percentage of DeferredIncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Depreciation Depletion And Amortization

us-gaap:DepreciationDepletionAndAmortization

us-gaap:DepreciationDepletionAndAmortization


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value145141148138137136133127133133131127123117122114103104100979287888284756249484647444343414137363431292829272527
Percentage of DepreciationDepletionAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Accounts Payable

us-gaap:IncreaseDecreaseInAccountsPayable

us-gaap:IncreaseDecreaseInAccountsPayable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-44.06126-20.05944-13.019-47.0491.0-2.0-89.08621-7.0-11.013-5.96.0-42.2482.6-2.6-8.928-18.9236-57.565-15.37415-28.53616-6.61312-11.39638-5.939-10.298-33.43541-17.9715-15.4736
Percentage of IncreaseDecreaseInAccountsPayable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Accounts Receivable

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInAccountsReceivable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value148131-52.0-134.0-65.0-13.0-213.047-2.013152-17.057273-35.018117866874132551314.975110916.46410852-15.0335667149-25.93464704976368189-13.3999910092
Percentage of IncreaseDecreaseInAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value5411818989259794979387175752697028626403888367735212775985943596869081745618932458340815750547836573361384324101285329215453922341352.328
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.84.121.521.824.511.821.916.913.96.517.021.116.09.921.820.514.27.817.317.210.72.121.325.714.86.511.822.616.26.521.520.816.93.618.620.318.15.917.120.614.53.329.919.312.20.2

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value512505316348361367395497509441648477456520-18.0495470557416444252441423397420382362355371348324319300284278276251243240227208208206203172151144136141113
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.211.57.68.29.08.79.211.712.310.715.711.711.413.3-0.513.112.815.712.012.97.513.813.112.513.613.213.213.814.814.413.813.913.914.114.314.614.014.214.414.214.015.215.716.715.615.816.016.018.215.2

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-03-312020-06-302020-03-312019-09-302019-06-302019-03-312018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value505361367497509441456520-18.0495470557
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.59.08.711.712.310.711.413.3-0.513.112.815.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.0

Share Based Compensation

us-gaap:ShareBasedCompensation

us-gaap:ShareBasedCompensation


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value67625458655545525466686971596052555451496253504649453431333532273029272226312524231614141313
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-721.0-538.0-49.0-658.0-259.0-272.0-375.03401267356-550.0-266.0-584.0-227.0-160.0-124.0-389.091-90.3-612.4-31.9-228.4-340.2-176.9-489.5-364.0-2534.05864-257.534-433.654-352.387-152.602-39.9-185.874-140.712-86.531-247.316-95.487-173.232-180.646-243.746-252.657-154.305-34.6-200.844-57.141
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-15.7-12.2-1.2-15.5-6.5-6.4-8.88.030.68.7-13.3-6.5-14.6-5.8-4.2-3.3-10.62.6-2.6-17.7-0.9-7.1-10.5-5.6-15.9-12.5-92.42.5-10.2-17.9-15.0-6.6-1.8-9.2-7.2-4.6-13.8-5.6-10.4-11.3-16.4-18.4-11.8-2.8-18.2-6.0

Payments To Acquire Property Plant And Equipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value75888910493112939796106969491968078606687747463746575587455384310731507212569786012474335574444124
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-428.0-340.0-2626.0-347.0-171.01135-253.0-340.0-1137.0-839.0-325.0-146.0-734.0-488.0-333.0-231.0-297.0-1124.010-118.5-143.3-467.8306-248.5-149.1-557.31611-8.4-93.415-6.5733028-106.3131624-25.649-348.527.11721-146.924-80.763-49.044-14.468612943
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-9.3-7.7-62.8-8.2-4.326.9-5.9-8.0-27.5-20.4-7.9-3.6-18.3-12.5-8.7-6.1-8.1-31.70.3-3.4-4.3-14.69.5-7.8-4.8-19.158.8-0.3-3.7-0.31.31.2-4.90.81.2-1.4-19.40.41.3-9.2-5.4-3.6-1.15.02.74.5

Payments Of Dividends Common Stock

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:PaymentsOfDividendsCommonStock


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value1271281181201211211101111161161161161181188690890.00.00.0
Percentage of PaymentsOfDividendsCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

Payments For Repurchase Of Common Stock

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value320240788248745111632591054771267456333163321330151419157772577616917538779.42712239246.927124223665369489.17317210388467.1952.5862.315
Percentage of PaymentsForRepurchaseOfCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Effective Income Tax Rate Continuing Operations

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:EffectiveIncomeTaxRateContinuingOperations


Effective
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value26.524.1-0.344.20.2710.2780.0080.2430.2470.244-0.0170.2790.270.2540.2170.2490.260.142-0.0250.2760.5760.251-0.0010.2690.2350.2500.2330.2590.2630.0030.2720.2850.246-0.0020.240.2480.2440.0050.2110.2510.2570.0020.1630.1720.152
Percentage of EffectiveIncomeTaxRateContinuingOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Net

us-gaap:DeferredTaxAssetsNet

us-gaap:DeferredTaxAssetsNet


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value563872603590698620524495403299230182
Percentage of DeferredTaxAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Unrecognized Tax Benefits

us-gaap:UnrecognizedTaxBenefits

us-gaap:UnrecognizedTaxBenefits


Unrecognized
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value1931521179715113813596925622106.409
Percentage of UnrecognizedTaxBenefits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Valuation Allowance

us-gaap:DeferredTaxAssetsValuationAllowance

us-gaap:DeferredTaxAssetsValuationAllowance


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value29241110.010.010115.6596.288101010
Percentage of DeferredTaxAssetsValuationAllowance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ctsh:CapitalizedContractCostCostsCapitalized

ctsh:CapitalizedContractCostCostsCapitalized


Capitalized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value11142019243546514943
Percentage of CapitalizedContractCostCostsCapitalized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ctsh:ContractWithCustomerAssetRevenueRecognizedButNotBilled

ctsh:ContractWithCustomerAssetRevenueRecognizedButNotBilled


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value831838.02933219-27.04557238
Percentage of ContractWithCustomerAssetRevenueRecognizedButNotBilled100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ctsh:ContractWithCustomerLiabilityAmountBilledButRevenueNotRecognized

ctsh:ContractWithCustomerLiabilityAmountBilledButRevenueNotRecognized


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-14.0341108-37.04025710214-2.0205
Percentage of ContractWithCustomerLiabilityAmountBilledButRevenueNotRecognized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ctsh:DistributionFromOurIndiaSubsidiaryGross

ctsh:DistributionFromOurIndiaSubsidiaryGross


Distribution
Period End2020-10-28
Value2100
Percentage of DistributionFromOurIndiaSubsidiaryGross100.0

ctsh:DistributionFromOurIndiaSubsidiaryGross us-gaap:SubsequentEventType

us-gaap:SubsequentEvent


Distribution
Period End2020-10-28
Value2100
Percentage of DistributionFromOurIndiaSubsidiaryGross100.0

ctsh:DistributionFromOurIndiaSubsidiaryNet

ctsh:DistributionFromOurIndiaSubsidiaryNet


Distribution
Period End2020-10-28
Value2000
Percentage of DistributionFromOurIndiaSubsidiaryNet100.0

ctsh:DistributionFromOurIndiaSubsidiaryNet us-gaap:SubsequentEventType

us-gaap:SubsequentEvent


Distribution
Period End2020-10-28
Value2000
Percentage of DistributionFromOurIndiaSubsidiaryNet100.0

ctsh:DistributionFromOurIndiaSubsidiaryTaxWithheld

ctsh:DistributionFromOurIndiaSubsidiaryTaxWithheld


Distribution
Period End2020-10-28
Value106
Percentage of DistributionFromOurIndiaSubsidiaryTaxWithheld100.0

ctsh:DistributionFromOurIndiaSubsidiaryTaxWithheld us-gaap:SubsequentEventType

us-gaap:SubsequentEvent


Distribution
Period End2020-10-28
Value105
Percentage of DistributionFromOurIndiaSubsidiaryTaxWithheld99.1

ctsh:EffectiveIncomeTaxRateReconciliationDiscreteTaxBenefitAmount

ctsh:EffectiveIncomeTaxRateReconciliationDiscreteTaxBenefitAmount


Effective
Period End2021-03-31
Value14
Percentage of EffectiveIncomeTaxRateReconciliationDiscreteTaxBenefitAmount100.0

ctsh:LitigationSettlementAmountAwardedFromOtherPartyActualDamages us-gaap:LitigationCase

ctsh:LitigationSettlementAmountAwardedFromOtherPartyActualDamages

ctsh:SyntelSterlingBestShoresMauritiusLtd


Litigation
Period End2021-04-20
Value285
Percentage of LitigationSettlementAmountAwardedFromOtherPartyActualDamages100.0

ctsh:LitigationSettlementAmountAwardedFromOtherPartyActualDamages us-gaap:LitigationCase, us-gaap:SubsequentEventType

ctsh:SyntelSterlingBestShoresMauritiusLtd, us-gaap:SubsequentEvent


Litigation
Period End2021-04-20
Value285
Percentage of LitigationSettlementAmountAwardedFromOtherPartyActualDamages100.0

ctsh:LitigationSettlementAmountAwardedFromOtherPartyPunitiveDamages us-gaap:LitigationCase

ctsh:LitigationSettlementAmountAwardedFromOtherPartyPunitiveDamages

ctsh:SyntelSterlingBestShoresMauritiusLtd


Litigation
Period End2021-04-202020-10-27
Value285570
Percentage of LitigationSettlementAmountAwardedFromOtherPartyPunitiveDamages100.0100.0

ctsh:LitigationSettlementAmountAwardedFromOtherPartyPunitiveDamages us-gaap:LitigationCase, us-gaap:SubsequentEventType

ctsh:SyntelSterlingBestShoresMauritiusLtd, us-gaap:SubsequentEvent


Litigation
Period End2021-04-202020-10-27
Value285570
Percentage of LitigationSettlementAmountAwardedFromOtherPartyPunitiveDamages100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivableWriteOffs

us-gaap:AllowanceForDoubtfulAccountsReceivableWriteOffs


Allowance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value3.06.06.02.07.02.0
Percentage of AllowanceForDoubtfulAccountsReceivableWriteOffs100.0100.0100.0100.0100.0100.0

us-gaap:CapitalizedContractCostAmortization

us-gaap:CapitalizedContractCostAmortization


Capitalized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-29000000.0-29000000.0-31000000.0-27000000.0-22000000.0-22000000.0-21000000.0-20000000.0-18000000.0-20000000.0
Percentage of CapitalizedContractCostAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CapitalizedContractCostImpairmentLoss

us-gaap:CapitalizedContractCostImpairmentLoss


Capitalized
Period End2021-06-302021-03-312020-12-312020-09-30
Value0-9000000.0-4000000.0-4000000.0
Percentage of CapitalizedContractCostImpairmentLoss0.0100.0100.0100.0

us-gaap:CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths

us-gaap:CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths


Cash
Period End2021-06-302021-03-312020-12-31
Value-4.03616
Percentage of CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths100.0100.0100.0

us-gaap:CommonStockDividendsPerShareDeclared

us-gaap:CommonStockDividendsPerShareDeclared


Common
Period End2021-06-302021-03-312020-06-302020-03-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value0.240.240.220.220.20.20.20.150.150.150000
Percentage of CommonStockDividendsPerShareDeclared100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0

us-gaap:CommonStockDividendsPerShareDeclared us-gaap:SubsequentEventType

us-gaap:SubsequentEvent


Common
Period End2021-07-252021-05-052021-02-032020-10-282018-10-292018-08-022018-05-04
Value0.240.240.240.220.20.20.2
Percentage of CommonStockDividendsPerShareDeclared0.00.00.00.00.00.00.0

us-gaap:ContractWithCustomerAssetReclassifiedToReceivable

us-gaap:ContractWithCustomerAssetReclassifiedToReceivable


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-67000000.0-162000000.0-26000000.0-35000000.0-53000000.0-194000000.0-4000000.0-30000000.0-42000000.0-208000000.0
Percentage of ContractWithCustomerAssetReclassifiedToReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerLiabilityRevenueRecognized

us-gaap:ContractWithCustomerLiabilityRevenueRecognized


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-32000000.0-325000000.0-6000000.0-11000000.0-71000000.0-197000000.0-32000000.0-26000000.0-54000000.0-149000000.0
Percentage of ContractWithCustomerLiabilityRevenueRecognized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DepreciationAndAmortization

us-gaap:DepreciationAndAmortization


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value14514114513813613313212712512312011911410786828273604746444542414139393534322927272826232524222121
Percentage of DepreciationAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:DerivativeGainLossOnDerivativeNet

us-gaap:ForeignExchangeForward, us-gaap:Nondesignated, us-gaap:ForeignCurrencyGainLoss


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value3.03.0-9.0-57.0-3.06.07.06.0-4.0-1.08.03.0182.0-7.0-3.0-3.0-10.02.8-5.52.5-2.8-1.23.20.1-1.82.8655.856-4.266-8.35-8.0127.12617-2.326
Percentage of DerivativeGainLossOnDerivativeNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation

us-gaap:DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet

us-gaap:CashFlowHedging, us-gaap:DesignatedAsHedgingInstrument


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value1421116.0-11.0-3.02.02.04.0-4.08.07.02135403435207.58.83.2-2.0-19.2-20.9-17.2
Percentage of DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation, us-gaap:IncomeStatementLocation

us-gaap:CashFlowHedging, us-gaap:DesignatedAsHedgingInstrument, us-gaap:CostOfSales


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value121810.05.0-9.0-3.02.01.03.0-3.07.06.01830342929176.07.42.7-2.0-16.2-17.5-14.1
Percentage of DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet85.785.790.983.381.8100.0100.050.075.075.087.585.785.785.785.085.382.985.080.084.184.4100.084.483.782.0

us-gaap:CashFlowHedging, us-gaap:DesignatedAsHedgingInstrument, us-gaap:SellingGeneralAndAdministrativeExpenses


Derivative
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value2.03.01.0-2.00.00.01.01.0-1.01.01.03.05.06.05.06.03.01.51.40.50.0-3.0-3.4-3.1
Percentage of DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet14.314.316.718.2-0.00.050.025.025.012.514.314.314.315.014.717.115.020.015.915.6-0.015.616.318.0

us-gaap:DividendsCommonStockCash

us-gaap:DividendsCommonStockCash


Dividends
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value128128122120120111114116116117119119899089
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsCommonStockCash us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Dividends
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value1281281221201201111141161161171191198990
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EffectOfExchangeRateOnCashAndCashEquivalents

us-gaap:EffectOfExchangeRateOnCashAndCashEquivalents


Effect
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value3.0-10.02194-13.0-119.0-8.0-34.05.03.0-5.0-12.0-20.01.05.02.01430-35.02.7-23.726-8.1-5.10.4-6.7-9.406-14.156-0.9135.892-1.781-1.694-15.9990.2570.1261.814-6.5544.236-3.423-13.5958.9378.6020.37116-5.61-8.716
Percentage of EffectOfExchangeRateOnCashAndCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings

us-gaap:FairValueInputsLevel3


Fair
Period End2021-06-302021-03-312020-06-302020-03-31
Value-16000000.0-3000000.0-1000000.0-22000000.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings100.0100.0100.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues

us-gaap:FairValueInputsLevel3


Fair
Period End2021-06-302021-03-312020-06-302020-03-31
Value0.08.0384.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues0.0100.0100.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements

us-gaap:FairValueInputsLevel3


Fair
Period End2021-06-302021-03-31
Value1.02.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements100.0100.0

us-gaap:ForeignCurrencyTransactionGainLossBeforeTax

us-gaap:ForeignCurrencyTransactionGainLossBeforeTax


Foreign
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value-7.0-9.0-11.0-1.0-2.0-102.0-36.0-47.0162.081-122.0-80.0-31.026-16.05.052-25.86.9-20.29.1-14.2-15.8-10.4-2.2-7.185-11.222-0.752-1.217-9.116-9.189-19.074-3.751
Percentage of ForeignCurrencyTransactionGainLossBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeLossFromEquityMethodInvestments

us-gaap:IncomeLossFromEquityMethodInvestments


Income
Period End2021-06-302020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value2000000.000-1000000.0-57000000.0-1000000.0001000000.001000000.001000000.01000000.000400000.0400000.0200000.00000
Percentage of IncomeLossFromEquityMethodInvestments100.00.00.0100.0100.0100.00.00.0100.00.0100.00.0100.0100.00.00.0100.0100.0100.00.00.00.00.0

us-gaap:IncreaseDecreaseInDeferredRevenue

us-gaap:IncreaseDecreaseInDeferredRevenue


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-49.015101-55.0-40.05970-12.0-58.05630-69.0-45.0-2.039-31.0-57.06719-59.5-38.94138-22.3-40.774
Percentage of IncreaseDecreaseInDeferredRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInOtherOperatingAssets


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-96.0362375-145.0-26.0-239.013139-90.0152-7.0110-247.017-20.341217.9213.721106.3342.0379.5337.7374.989
Percentage of IncreaseDecreaseInOtherOperatingAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-33.0-558.031894218-328.0-121.0170178-386.0142144163-393.066729395-384.0126214238-525.824232171-201.767171154-281.52721515696-139.62610617166-136.16100109134-149.82522913864-83.139
Percentage of IncreaseDecreaseInOtherOperatingLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InvestmentIncomeInterestAndDividend

us-gaap:InvestmentIncomeInterestAndDividend


Investment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value7.09.0142737414043454849474041363431322927273027201718171714131110131311129.98411109.979.4748.9376.1397.0536.5476.054
Percentage of InvestmentIncomeInterestAndDividend100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LitigationSettlementAmountAwardedFromOtherParty us-gaap:LitigationCase

us-gaap:LitigationSettlementAmountAwardedFromOtherParty

ctsh:SyntelSterlingBestShoresMauritiusLtd


Litigation
Period End2021-04-202020-10-27
Value570854
Percentage of LitigationSettlementAmountAwardedFromOtherParty100.0100.0

us-gaap:LitigationSettlementAmountAwardedFromOtherParty us-gaap:LitigationCase, us-gaap:SubsequentEventType

ctsh:SyntelSterlingBestShoresMauritiusLtd, us-gaap:SubsequentEvent


Litigation
Period End2021-04-202020-10-27
Value570854
Percentage of LitigationSettlementAmountAwardedFromOtherParty100.0100.0

us-gaap:OciBeforeReclassificationsBeforeTaxAttributableToParent us-gaap:StatementEquityComponents

us-gaap:OciBeforeReclassificationsBeforeTaxAttributableToParent

us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges


Oci
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value-3.017407735-113.09.0-28.01939114-96.0-91.0-14.0676.0351245.363-7.02220-29.1
Percentage of OciBeforeReclassificationsBeforeTaxAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OciBeforeReclassificationsNetOfTaxAttributableToParent us-gaap:StatementEquityComponents

us-gaap:OciBeforeReclassificationsNetOfTaxAttributableToParent

us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges


Oci
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value-3.014336329-94.08.0-23.0153293-76.0-72.0-9.0514.026944.147-5.01817-23.9
Percentage of OciBeforeReclassificationsNetOfTaxAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value-13.0-4.0245838-91.06.0-24.0113687-82.0-87.0-36.020-22.0-1.079-1.441-8.31932-6.86.94229215510791-77.067-113.23951-54.634198-193.578
Percentage of OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent


Other
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value1269038-135.0115-65.0-9.0-2.0-19.0-12.0-71.03711335017-50.40.5-28.619-20.7-16.823-40.8-28.019-31.962-0.3361.4727.27825-0.575-19.5886.216.669-9.38
Percentage of OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsTax us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsTax

us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value0.03.07.0146.0-19.01.0-5.04.07.021-20.0-19.0-5.0162.09.0301.215-2.04.03.2-5.2
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsTax0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent

us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value-17.0-4.0297146-110.07.0-30.01543106-103.0-112.0-49.027-28.00.0104-2.254-10.02439-8.2
Percentage of OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value-2.0-31.015716483-249.0125-94.0124998-117.0-194.0-16.0305.051123-60.951-35.05210-23.8
Percentage of OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent11.8775.0541.4231.0180.4226.41785.7313.380.0114.092.5113.6173.232.7111.1-17.90.0118.32768.295.0350.0216.727.5290.2

us-gaap:AccumulatedTranslationAdjustment


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value15-27.01289337-139.0118-64.0-6.0-3.0-15.0-14.0-82.04111335017-50.40.5-29.020-20.6-16.8
Percentage of OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent-88.2675.0441.4131.080.4126.41685.7213.3-40.0-7.0-14.213.673.2-83.740.7-117.90.016.32290.90.9290.083.3-52.0204.9

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value1.0-29.015014876-226.0121-89.04.04074-94.0-157.0-6.026115097-58.039-34.1447.1-22.8283.80.59-12.1985510898-50.487-116.17131-49.64206-203.41
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent us-gaap:StatementEquityComponents

us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value-13.0-4.0245838-91.06.0-24.0113687-82.0-87.0-36.020-22.0-1.079-1.441-8.02032-6.8
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent-1300.013.816.039.250.040.35.027.0275.090.0117.687.255.4600.076.9-200.0-2.081.42.4103.823.544.8460.629.8

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value1.0-29.015014876-226.0121-89.04.04074-94.0-157.0-7.026115097-58.039-34.0457.2-22.8
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0116.7100.0100.0100.0100.0100.0100.099.7100.9101.4100.0

us-gaap:AccumulatedTranslationAdjustment


Other
Period End2021-06-302021-03-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value14-25.038-135.0115-65.0-9.0-2.0-19.0-12.0-71.03711335017-51.01.0-29.020-20.6-16.8
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent1400.086.250.059.795.073.0-225.0-5.0-25.712.845.2-616.742.3300.0100.017.587.92.585.044.8-290.173.7

us-gaap:OtherComprehensiveIncomeLossTaxPortionAttributableToParent1 us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossTaxPortionAttributableToParent1

us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges


Other
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value-4.05.0138.0-19.01.0-6.04.07.019-21.0-25.0-13.07.0-6.01.025-0.813-2.04.06.9-1.4
Percentage of OtherComprehensiveIncomeLossTaxPortionAttributableToParent1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value-3.0-2.0167.0-23.04.0-5.08.09.024-23.0-37.0-9.04.0-6.01.026-2.912-1.07.03.7-1.0
Percentage of OtherComprehensiveIncomeLossTaxPortionAttributableToParent175.00.0123.187.5121.1400.083.3200.0128.6126.3109.5148.069.257.1100.0100.0104.0362.591.050.0175.053.671.4

us-gaap:AccumulatedTranslationAdjustment


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value1.0-2.03.0-1.0-4.03.01.03.0-1.04.0-2.0-11.04.00.00.00.00.00.00.00.00.00.00.0
Percentage of OtherComprehensiveIncomeLossTaxPortionAttributableToParent1-25.00.023.1-12.521.1300.0-16.775.0-14.321.19.544.0-30.80.0-0.00.00.0-0.00.0-0.00.00.0-0.0

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax

us-gaap:ForeignExchangeContract, us-gaap:CashFlowHedging, us-gaap:DesignatedAsHedgingInstrument


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value-3.017407735-113.09.0-28.019
Percentage of OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherNoncashIncomeExpense

us-gaap:OtherNoncashIncomeExpense


Other
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-12.080-43.0-144.0-106.0-61.0272184-96.0-77.0-23.037-14.08.055-36.80.7-12.02.1-20.7-19.2-13.85.1-17.479-16.108-6.5239.835-0.373-20.863-29.652-1.656-6.8812.618-11.6361370-24.1830.404-0.24-17.08410
Percentage of OtherNoncashIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForRestructuring us-gaap:RestructuringCostAndReserve

us-gaap:PaymentsForRestructuring

us-gaap:EmployeeSeverance


Payments
Period End2020-12-312019-12-31
Value2230
Percentage of PaymentsForRestructuring100.0100.0

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

us-gaap:PaymentsToAcquireBusinessesGross

ctsh:ESGMobility, us-gaap:SubsequentEvent


Payments
Period End2021-06-30
Value117
Percentage of PaymentsToAcquireBusinessesGross100.0

ctsh:Linium, us-gaap:SubsequentEvent


Payments
Period End2021-01-31
Value85
Percentage of PaymentsToAcquireBusinessesGross0.0

ctsh:Magenic, us-gaap:SubsequentEvent


Payments
Period End2021-02-28
Value240
Percentage of PaymentsToAcquireBusinessesGross0.0

ctsh:Servian, us-gaap:SubsequentEvent


Payments
Period End2021-04-302021-01-31
Value248240
Percentage of PaymentsToAcquireBusinessesGross0.00.0

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value3483105458040386239146351976321.04771.0144660.06.0701.70.00.00.026790.09.8521.635411.339111391519177.8747.7655117.8952.1582.67
Percentage of PaymentsToAcquireBusinessesNetOfCashAcquired100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.00.00.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireEquityMethodInvestments

us-gaap:PaymentsToAcquireEquityMethodInvestments


Payments
Period End2020-12-31
Value0.0
Percentage of PaymentsToAcquireEquityMethodInvestments0.0

us-gaap:PaymentsToAcquireHeldToMaturitySecurities

us-gaap:PaymentsToAcquireHeldToMaturitySecurities


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value7.0820.00.00.020227017312942705742972222063533133492529
Percentage of PaymentsToAcquireHeldToMaturitySecurities100.0100.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireOtherInvestments

us-gaap:PaymentsToAcquireOtherInvestments


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value4921508518221054231502793134161287312215015459120409
Percentage of PaymentsToAcquireOtherInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions

us-gaap:ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value3243333336403237405039404260434243614144404932303136510.01423264028163137301843
Percentage of ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value146294271921542175903433484143642151711961583515150.0
Percentage of ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:ProceedsFromRepaymentsOfLinesOfCredit

us-gaap:ProceedsFromRepaymentsOfLinesOfCredit


Proceeds
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value0.00.017400.00.00.00.00.00.00.0-75.075-150.0-200.03500.00.0-100.0-250.0350-100.00.0-550.06500.0
Percentage of ProceedsFromRepaymentsOfLinesOfCredit0.00.0100.00.00.00.00.00.00.00.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.00.0100.0100.00.0

us-gaap:ProceedsFromSaleAndMaturityOfOtherInvestments

us-gaap:ProceedsFromSaleAndMaturityOfOtherInvestments


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value292308518125528331602792920140146591.0490101244154298
Percentage of ProceedsFromSaleAndMaturityOfOtherInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProvisionForDoubtfulAccounts

us-gaap:ProvisionForDoubtfulAccounts


Provision
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value6.0-5.0-10.00.08.010.0-37.04.08.0148.01.02.02.03.0-5.08.09.02.85.2-1.45.41.89.83.5-4.91.797-3.3194.5421.655-2.4142.4751.7811.7290.7281.6751.5491.1241.0491.0163.336-0.819-2.12.5352.8572.658
Percentage of ProvisionForDoubtfulAccounts100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent us-gaap:IncomeStatementLocation, us-gaap:StatementEquityComponents

us-gaap:ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent

us-gaap:CostOfSales, us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges


Reclassification
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value121810.05.0-9.0-3.02.01.03.0-3.07.06.01830342929176.07.43.0-2.0-16.2-17.5
Percentage of ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:SellingGeneralAndAdministrativeExpenses, us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges


Reclassification
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value2.03.01.0-2.00.00.01.01.0-1.01.01.03.05.06.05.06.03.01.51.40.00.0-3.0-3.4
Percentage of ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent16.716.720.022.2-0.00.0100.033.333.314.316.716.716.717.617.220.717.625.018.90.0-0.018.519.4

us-gaap:ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent us-gaap:IncomeStatementLocation, us-gaap:StatementEquityComponents

us-gaap:ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent

us-gaap:CostOfSales, us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges


Reclassification
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value9.0158.04.0-7.0-3.01.01.03.0-3.05.05.01323262222134.75.83.0-2.0-12.9-14.3
Percentage of ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:SellingGeneralAndAdministrativeExpenses, us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges


Reclassification
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value1.03.01.0-2.00.01.00.01.0-1.01.01.02.04.05.04.05.02.00.81.10.00.0-2.6-2.8
Percentage of ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent11.120.025.028.6-0.0100.00.033.333.320.020.015.417.419.218.222.715.417.019.00.0-0.020.219.6

us-gaap:ReclassificationFromAociCurrentPeriodTax us-gaap:IncomeStatementLocation, us-gaap:StatementEquityComponents

us-gaap:ReclassificationFromAociCurrentPeriodTax

us-gaap:CostOfSales, us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges


Reclassification
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value3.03.02.01.0-2.00.01.00.00.00.02.01.05.07.08.07.07.04.01.31.60.00.0-3.3-3.2
Percentage of ReclassificationFromAociCurrentPeriodTax100.0100.0100.0100.0100.00.0100.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0

us-gaap:SellingGeneralAndAdministrativeExpenses, us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges


Reclassification
Period End2021-06-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value1.00.00.0-1.01.00.00.00.00.01.01.01.01.01.01.00.70.30.00.0-0.4-0.6
Percentage of ReclassificationFromAociCurrentPeriodTax33.3-0.00.0-100.00.00.00.00.00.020.014.312.514.314.325.053.818.80.00.012.118.8

us-gaap:RepaymentsOfDebtAndCapitalLeaseObligations

us-gaap:RepaymentsOfDebtAndCapitalLeaseObligations


Repayments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value131513121213127.07.02.02.0252539332021211614131313131313140.0
Percentage of RepaymentsOfDebtAndCapitalLeaseObligations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:RestructuringAndRelatedCostIncurredCost us-gaap:IncomeStatementLocation

us-gaap:RestructuringAndRelatedCostIncurredCost

us-gaap:RestructuringCharges


Restructuring
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value3851715510165492.0
Percentage of RestructuringAndRelatedCostIncurredCost100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestructuringAndRelatedCostIncurredCost us-gaap:RestructuringCostAndReserve

us-gaap:EmployeeSeverance


Restructuring
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-09-302018-06-30
Value24383926493327110.0
Percentage of RestructuringAndRelatedCostIncurredCost63.274.554.947.348.550.855.10.00.0

us-gaap:RestructuringAndRelatedCostIncurredCost us-gaap:RestructuringCostAndReserve, us-gaap:RestructuringPlan

ctsh:EmployeeRetentionCosts, ctsh:A2020FitforGrowth


Restructuring
Period End2020-12-312020-09-302020-06-302020-03-312019-06-302019-03-31
Value0.00.01.04.00.00.0
Percentage of RestructuringAndRelatedCostIncurredCost0.00.01.47.30.00.0

ctsh:EmployeeRetentionCosts, ctsh:RealignmentProgram


Restructuring
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.00.09.06.027180.00.0
Percentage of RestructuringAndRelatedCostIncurredCost0.00.012.710.926.727.70.00.0

ctsh:ExitFromContentRelatedServices, ctsh:A2020FitforGrowth


Restructuring
Period End2020-12-312020-09-302020-06-302020-03-31
Value3.01.08.011
Percentage of RestructuringAndRelatedCostIncurredCost7.92.011.320.0

us-gaap:EmployeeSeverance, ctsh:A2020FitforGrowth


Restructuring
Period End2020-12-312020-09-302020-06-302020-03-312019-06-302019-03-31
Value243839260.00.0
Percentage of RestructuringAndRelatedCostIncurredCost63.274.554.947.30.00.0

us-gaap:FacilityClosing, ctsh:A2020FitforGrowth


Restructuring
Period End2020-12-312020-09-302020-06-302020-03-312019-06-302019-03-31
Value125.0195.00.00.0
Percentage of RestructuringAndRelatedCostIncurredCost31.69.826.89.10.00.0

us-gaap:OtherRestructuring, ctsh:RealignmentProgram


Restructuring
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value2.08.03.01422142.00.0
Percentage of RestructuringAndRelatedCostIncurredCost5.315.74.225.521.821.54.10.0

us-gaap:RestructuringCharges

us-gaap:RestructuringCharges


Restructuring
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3851715510165492.07.0110.01.0
Percentage of RestructuringCharges100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0

us-gaap:RestructuringReserveAcceleratedDepreciation us-gaap:RestructuringCostAndReserve, us-gaap:RestructuringPlan

us-gaap:RestructuringReserveAcceleratedDepreciation

us-gaap:FacilityClosing, ctsh:A2020FitforGrowth


Restructuring
Period End2020-12-312020-09-302020-06-30
Value3000000.001000000.0
Percentage of RestructuringReserveAcceleratedDepreciation100.00.0100.0

us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation

us-gaap:CommonStock


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value1000000.01000000.01000000.02000000.02000000.02000000.02000000.02000000.01000000.01000000.02000000.02000000.03000000.02000000.01000000.03000000.0
Percentage of StockIssuedDuringPeriodSharesShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value32433336403740503940426043414461
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value32433336403740503940426043414461
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockRepurchasedAndRetiredDuringPeriodShares us-gaap:StatementEquityComponents

us-gaap:StockRepurchasedAndRetiredDuringPeriodShares

us-gaap:CommonStock


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value4.03.04.01.09.04.01910.04.01.08.04.05.02.00.022
Percentage of StockRepurchasedAndRetiredDuringPeriodShares100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0

us-gaap:StockRepurchasedAndRetiredDuringPeriodValue

us-gaap:StockRepurchasedAndRetiredDuringPeriodValue


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value3162522975952624110727712674563331633213301514
Percentage of StockRepurchasedAndRetiredDuringPeriodValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockRepurchasedAndRetiredDuringPeriodValue us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value1119314159879212099179451211052621330414
Percentage of StockRepurchasedAndRetiredDuringPeriodValue35.136.947.5100.016.538.211.212.867.0100.019.133.278.9100.0100.027.3

us-gaap:RetainedEarnings


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value2051591560.0439149952672880.0512211700.00.01100
Percentage of StockRepurchasedAndRetiredDuringPeriodValue64.963.152.50.083.561.888.887.233.00.080.966.821.10.00.072.7

us-gaap:UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities

us-gaap:UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities


Unrecognized
Period End2021-03-31
Value43
Percentage of UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities100.0

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value1000000.01000000.01000000.000002000000.01000000.01000000.02000000.02000000.02000000.02000000.02300000.02700000.03800000.03900000.04000000.04300000.04053000.04282000.05167000.02643000.02776000.03322000.04074000.05101000.05780000.06574000.07488000.07762000.07902000.08598000.08779000.0
Percentage of WeightedAverageNumberDilutedSharesOutstandingAdjustment100.0100.0100.00.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ctsh:AccruedTravelAndEntertainmentCurrent

ctsh:AccruedTravelAndEntertainmentCurrent


Accrued
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value7.02120242447413534574538324338343636322829373433354033282931282526282219181919171615
Percentage of AccruedTravelAndEntertainmentCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ctsh:AdjustmentToCurrentIncomeTaxBalanceAsAResultOfSettlement

ctsh:AdjustmentToCurrentIncomeTaxBalanceAsAResultOfSettlement


Adjustment
Period End2021-03-31
Value29
Percentage of AdjustmentToCurrentIncomeTaxBalanceAsAResultOfSettlement100.0

ctsh:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNonDeductibleGoodwill

ctsh:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNonDeductibleGoodwill


Business
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value24334492456435442
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNonDeductibleGoodwill100.0100.0100.0100.0100.0100.0

ctsh:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNonDeductibleGoodwill us-gaap:BusinessAcquisition

ctsh:CollaborativeSolutions


Business
Period End2020-12-312020-09-302020-06-30
Value4444327
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNonDeductibleGoodwill8.99.675.2

ctsh:ESGMobility


Business
Period End2021-06-30
Value31
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNonDeductibleGoodwill12.8

ctsh:NewSignature


Business
Period End2020-12-312020-09-30
Value292294
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNonDeductibleGoodwill59.364.5

ctsh:Servian


Business
Period End2021-06-30
Value178
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNonDeductibleGoodwill73.3

us-gaap:SeriesOfIndividuallyImmaterialBusinessAcquisitions


Business
Period End2020-12-312020-09-302020-06-302019-12-31
Value662810821
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNonDeductibleGoodwill13.46.124.84.8

ctsh:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseRightOfUseAsset

ctsh:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseRightOfUseAsset


Business
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value448.0323118
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0

ctsh:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseRightOfUseAsset us-gaap:BusinessAcquisition

ctsh:ESGMobility


Business
Period End2021-06-30
Value27
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseRightOfUseAsset61.4

ctsh:Magenic


Business
Period End2021-06-302021-03-31
Value10.08.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseRightOfUseAsset22.7100.0

ctsh:Servian


Business
Period End2021-06-30
Value7.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseRightOfUseAsset15.9

us-gaap:SeriesOfIndividuallyImmaterialBusinessAcquisitions


Business
Period End2020-12-312020-09-302020-06-30
Value131212
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseRightOfUseAsset40.638.766.7

ctsh:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipmentAndOtherNoncurrentAssets

ctsh:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipmentAndOtherNoncurrentAssets


Business
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312018-12-31
Value205.03029242515
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipmentAndOtherNoncurrentAssets100.0100.0100.0100.0100.0100.0100.0

ctsh:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipmentAndOtherNoncurrentAssets us-gaap:BusinessAcquisition

ctsh:CollaborativeSolutions


Business
Period End2020-12-312020-09-302020-06-30
Value6.06.05.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipmentAndOtherNoncurrentAssets20.020.720.8

ctsh:ESGMobility


Business
Period End2021-06-30
Value8.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipmentAndOtherNoncurrentAssets40.0

ctsh:NewSignature


Business
Period End2020-12-312020-09-30
Value6.04.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipmentAndOtherNoncurrentAssets20.013.8

ctsh:Servian


Business
Period End2021-06-30
Value7.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipmentAndOtherNoncurrentAssets35.0

us-gaap:SeriesOfIndividuallyImmaterialBusinessAcquisitions


Business
Period End2020-12-312020-09-302020-06-302019-12-312018-12-312017-12-312016-12-31
Value15161914151953
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipmentAndOtherNoncurrentAssets50.055.279.256.0100.00.00.0

ctsh:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedTaxDeductibleGoodwill

ctsh:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedTaxDeductibleGoodwill


Business
Period End2021-06-302021-03-312020-12-312020-09-30
Value195169498488
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedTaxDeductibleGoodwill100.0100.0100.0100.0

ctsh:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedTaxDeductibleGoodwill us-gaap:BusinessAcquisition

ctsh:ESGMobility


Business
Period End2021-06-30
Value24
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedTaxDeductibleGoodwill12.3

ctsh:Magenic


Business
Period End2021-06-302021-03-31
Value114112
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedTaxDeductibleGoodwill58.566.3

us-gaap:SeriesOfIndividuallyImmaterialBusinessAcquisitions


Business
Period End2020-12-312020-09-30
Value9282
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedTaxDeductibleGoodwill18.516.8

ctsh:CustomerVolumeandOtherIncentivesCurrent

ctsh:CustomerVolumeandOtherIncentivesCurrent


Customer
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-31
Value258264266321302264251366357329323320312318289277223258
Percentage of CustomerVolumeandOtherIncentivesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ctsh:DebtSecuritiesTimeDeposits us-gaap:BalanceSheetLocation

ctsh:DebtSecuritiesTimeDeposits

us-gaap:ShortTermInvestments


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value3231243.04.03.0466
Percentage of DebtSecuritiesTimeDeposits100.0100.0100.0100.0100.0100.0

ctsh:DeferredIncomeTaxRelatedToMat

ctsh:DeferredIncomeTaxRelatedToMat


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value981762282782862522181951631129878
Percentage of DeferredIncomeTaxRelatedToMat100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ctsh:DeferredTaxLiabilitiesDepreciationandAmortization

ctsh:DeferredTaxLiabilitiesDepreciationandAmortization


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value198187256209266
Percentage of DeferredTaxLiabilitiesDepreciationandAmortization100.0100.0100.0100.0100.0

ctsh:EquityandCostMethodInvestments us-gaap:BalanceSheetLocation

ctsh:EquityandCostMethodInvestments

ctsh:Longterminvestments


Equityand
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value36353539384017
Percentage of EquityandCostMethodInvestments100.0100.0100.0100.0100.0100.0100.0

ctsh:IncomeTaxDisputedAmount ctsh:OnetimeTransactionType, us-gaap:IncomeTaxAuthority, us-gaap:IncomeTaxAuthorityName

ctsh:IncomeTaxDisputedAmount

ctsh:A2016IndiaCashRemittance, us-gaap:ForeignCountry, us-gaap:MinistryOfFinanceIndia


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-30
Value330003300033000330003300033000330003300047533000482
Percentage of IncomeTaxDisputedAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ctsh:LeaseLiability

ctsh:LeaseLiability


Lease
Period End2020-12-312019-12-31
Value1079973
Percentage of LeaseLiability100.0100.0

ctsh:LeaseRightofUseAsset

ctsh:LeaseRightofUseAsset


Lease
Period End2020-12-312019-12-31
Value1027942
Percentage of LeaseRightofUseAsset100.0100.0

ctsh:LesseeOperatingLeaseLeaseNotyetCommencedAmount

ctsh:LesseeOperatingLeaseLeaseNotyetCommencedAmount


Lessee
Period End2020-12-31
Value92
Percentage of LesseeOperatingLeaseLeaseNotyetCommencedAmount100.0

ctsh:RestrictedInvestmentsInitiallyDeposited us-gaap:IncomeTaxAuthority, us-gaap:IncomeTaxAuthorityName

ctsh:RestrictedInvestmentsInitiallyDeposited

us-gaap:ForeignCountry, us-gaap:MinistryOfFinanceIndia


Restricted
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-04-30
Value3773833843823713723933974074064042.8e-05
Percentage of RestrictedInvestmentsInitiallyDeposited100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedIncomeTaxesNoncurrent

us-gaap:AccruedIncomeTaxesNoncurrent


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value3784284284284284784784714714714784905085335840.0
Percentage of AccruedIncomeTaxesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:AccruedLiabilitiesAndOtherLiabilities

us-gaap:AccruedLiabilitiesAndOtherLiabilities


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value22342158251923402290199421912175205619152267212619121716207119811655156218561772156513251818165513481221152214421478
Percentage of AccruedLiabilitiesAndOtherLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedProfessionalFeesCurrent

us-gaap:AccruedProfessionalFeesCurrent


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value17114814313813913113711110911511011411310310099851039988747569677591826554524537354035333334323132363426
Percentage of AccruedProfessionalFeesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship

us-gaap:AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax

us-gaap:ForeignExchangeContract, us-gaap:CashFlowHedging


Accumulated
Period End2020-12-312020-09-302020-06-302019-12-31
Value5531-27.026
Percentage of AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax100.0100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivable

us-gaap:AllowanceForDoubtfulAccountsReceivable


Allowance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value4946577375746778
Percentage of AllowanceForDoubtfulAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AociBeforeTaxAttributableToParent us-gaap:StatementEquityComponents

us-gaap:AociBeforeTaxAttributableToParent

us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges


Aoci
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312013-12-31
Value46636738-33.0-79.031245439-4.0-110.0-7.01051541271551555153-0.610.0-14.4-54.2-46.0-102.6-355.0
Percentage of AociBeforeTaxAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedOtherComprehensiveIncome


Aoci
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312013-12-31
Value9092123-34.0-198.0-281.0-32.0-157.0-63.0-75.0-124.0-222.0-105.089105757019-104.0-42.2-93.9-59.0-111.1-122.7-98.9-139.8-331.0
Percentage of AociBeforeTaxAttributableToParent195.7146.0183.6-89.5600.0355.7-103.2-654.2-116.7-192.33100.0201.81500.084.868.259.145.212.3-203.9-78.415650.0-590.0771.5226.4215.0136.393.2

us-gaap:AccumulatedTranslationAdjustment


Aoci
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312013-12-31
Value442956-72.0-165.0-202.0-63.0-181.0-117.0-111.0-108.0-93.0-79.03.0-38.0-49.0-82.0-132.0-149.0-98.5-99.0-70.0-89.9-69.2-52.4-34.824
Percentage of AociBeforeTaxAttributableToParent95.746.083.6-189.5500.0255.7-203.2-754.2-216.7-284.62700.084.51128.62.9-24.7-38.6-52.9-85.2-292.2-183.116500.0-700.0624.3127.7113.933.9-6.8

us-gaap:AociTaxAttributableToParent us-gaap:StatementEquityComponents

us-gaap:AociTaxAttributableToParent

us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges


Aoci
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312013-12-31
Value8.012127.0-6.0-14.05.04.010.06.0-1.0-20.01.026393238371213-0.32.0-2.7-9.8-8.4-15.9-55.0
Percentage of AociTaxAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedOtherComprehensiveIncome


Aoci
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312013-12-31
Value8.011136.0-10.0-17.06.02.07.0-1.0-10.0-34.0-11.0263531373610.0141.83.0-4.9-9.4-8.4-16.7-55.0
Percentage of AociTaxAttributableToParent100.091.7108.385.7166.7121.4120.050.070.0-16.71000.0170.0-1100.0100.089.796.997.497.383.3106.9-600.0150.0181.595.9100.0105.0100.0

us-gaap:AccumulatedTranslationAdjustment


Aoci
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312013-12-31
Value-1.01.0-1.0-4.0-3.01.0-2.0-3.0-6.0-5.0-9.0-7.04.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of AociTaxAttributableToParent-8.38.3-14.366.721.420.0-50.0-30.0-100.0500.045.0-700.015.40.00.00.00.00.00.0-0.00.0-0.0-0.0-0.0-0.0-0.0

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis us-gaap:BalanceSheetLocation

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis

us-gaap:ShortTermInvestments


Available
Period End2021-06-30
Value105
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis100.0

us-gaap:AvailableForSaleSecuritiesDebtSecurities us-gaap:BalanceSheetLocation

us-gaap:AvailableForSaleSecuritiesDebtSecurities

us-gaap:ShortTermInvestments


Available
Period End2021-06-30
Value105
Percentage of AvailableForSaleSecuritiesDebtSecurities100.0

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

us-gaap:ShortTermInvestments, us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


Available
Period End2021-06-30
Value105
Percentage of AvailableForSaleSecuritiesDebtSecurities100.0

us-gaap:AvailableForSaleSecuritiesDebtSecurities us-gaap:BalanceSheetLocation, us-gaap:FairValueByMeasurementFrequency

us-gaap:ShortTermInvestments, us-gaap:FairValueMeasurementsRecurring


Available
Period End2021-06-30
Value105
Percentage of AvailableForSaleSecuritiesDebtSecurities100.0

us-gaap:BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh

us-gaap:BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh


Business
Period End2020-12-31
Value59
Percentage of BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh100.0

us-gaap:BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh us-gaap:BusinessAcquisition

ctsh:CollaborativeSolutions


Business
Period End2020-09-30
Value54
Percentage of BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh0.0

us-gaap:BusinessCombinationContingentConsiderationLiability

us-gaap:BusinessCombinationContingentConsiderationLiability


Business
Period End2020-12-31
Value42
Percentage of BusinessCombinationContingentConsiderationLiability100.0

us-gaap:BusinessCombinationContingentConsiderationLiability us-gaap:BalanceSheetLocation, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

ctsh:AccruedExpensesAndOtherCurrentLiabilities, us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring


Business
Period End2021-06-302021-03-312020-09-302020-06-302019-12-312019-09-30
Value271111138.037
Percentage of BusinessCombinationContingentConsiderationLiability0.00.00.00.00.00.0

us-gaap:OtherCurrentLiabilities, us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring


Business
Period End2020-12-312020-03-312019-12-31
Value11118.0
Percentage of BusinessCombinationContingentConsiderationLiability26.20.00.0

us-gaap:OtherNoncurrentLiabilities, us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring


Business
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value13464342419.030
Percentage of BusinessCombinationContingentConsiderationLiability0.00.0102.40.00.00.00.0

us-gaap:BusinessCombinationContingentConsiderationLiability us-gaap:BalanceSheetLocation, us-gaap:FairValueByMeasurementFrequency

ctsh:AccruedExpensesAndOtherCurrentLiabilities, us-gaap:FairValueMeasurementsRecurring


Business
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value27111113118.037
Percentage of BusinessCombinationContingentConsiderationLiability0.00.00.00.00.00.00.0

us-gaap:OtherCurrentLiabilities, us-gaap:FairValueMeasurementsRecurring


Business
Period End2020-12-312019-12-31
Value118.0
Percentage of BusinessCombinationContingentConsiderationLiability26.20.0

us-gaap:OtherNoncurrentLiabilities, us-gaap:FairValueMeasurementsRecurring


Business
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value13464342419.030
Percentage of BusinessCombinationContingentConsiderationLiability0.00.0102.40.00.00.00.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents


Business
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312018-12-31
Value45133533134515
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents100.0100.0100.0100.0100.0100.0100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents us-gaap:BusinessAcquisition

ctsh:CollaborativeSolutions


Business
Period End2020-12-312020-09-302020-06-30
Value10.010.05.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents28.630.338.5

ctsh:ESGMobility


Business
Period End2021-06-30
Value28
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents62.2

ctsh:Servian


Business
Period End2021-06-30
Value4.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents8.9

us-gaap:SeriesOfIndividuallyImmaterialBusinessAcquisitions


Business
Period End2020-12-312020-09-302020-06-302019-12-312018-12-312017-12-312016-12-31
Value10.08.08.015158.017
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents28.624.261.533.3100.00.00.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables


Business
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value6122898963
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables100.0100.0100.0100.0100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables us-gaap:BusinessAcquisition

ctsh:CollaborativeSolutions


Business
Period End2020-12-312020-09-302020-06-30
Value383841
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables42.742.765.1

ctsh:ESGMobility


Business
Period End2021-06-30
Value24
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables39.3

ctsh:NewSignature


Business
Period End2020-12-312020-09-30
Value1316
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables14.618.0

ctsh:Servian


Business
Period End2021-06-30
Value15
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables24.6

us-gaap:SeriesOfIndividuallyImmaterialBusinessAcquisitions


Business
Period End2020-12-312020-09-302020-06-30
Value211822
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables23.620.234.9

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilities

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilities


Business
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312018-12-31
Value65319699517167
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilities100.0100.0100.0100.0100.0100.0100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilities us-gaap:BusinessAcquisition

ctsh:A10thMagnitude


Business
Period End2020-12-312020-09-30
Value1514
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilities15.614.1

ctsh:CollaborativeSolutions


Business
Period End2020-12-312020-09-302020-06-30
Value252530
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilities26.025.358.8

ctsh:ESGMobility


Business
Period End2021-06-30
Value20
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilities30.8

ctsh:Magenic


Business
Period End2021-06-302021-03-31
Value3029
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilities46.293.5

ctsh:NewSignature


Business
Period End2020-12-312020-09-30
Value2026
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilities20.826.3

ctsh:Servian


Business
Period End2021-06-30
Value13
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilities20.0

us-gaap:SeriesOfIndividuallyImmaterialBusinessAcquisitions


Business
Period End2020-12-312020-09-302020-06-302019-12-312018-12-312017-12-312016-12-31
Value232121226750173
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilities24.021.241.231.0100.00.00.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill us-gaap:BusinessAcquisition, us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill

ctsh:CollaborativeSolutions, us-gaap:CustomerRelationships


Business
Period End2020-12-312020-09-302020-06-30
Value373742
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill100.0100.0100.0

ctsh:ESGMobility, us-gaap:CustomerRelationships


Business
Period End2021-06-30
Value77
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill0.0

ctsh:NewSignature, us-gaap:CustomerRelationships


Business
Period End2020-12-312020-09-30
Value8.012
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill21.632.4

ctsh:NewSignature, us-gaap:OtherIntangibleAssets


Business
Period End2020-12-31
Value1.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill2.7

ctsh:Servian, us-gaap:CustomerRelationships


Business
Period End2021-06-30
Value76
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill0.0

ctsh:Servian, us-gaap:OtherIntangibleAssets


Business
Period End2021-06-30
Value2.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill0.0

us-gaap:SeriesOfIndividuallyImmaterialBusinessAcquisitions, us-gaap:CustomerRelationships


Business
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-09-302016-12-312014-12-312013-12-312012-12-31
Value2112121913865502761221231479119912589.4
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill56.832.428.60.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:SeriesOfIndividuallyImmaterialBusinessAcquisitions, us-gaap:OtherIntangibleAssets


Business
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-09-302016-12-312014-12-312013-12-312012-12-31
Value2.02.02.06.03937302726264.02.01.04.327.1920.6
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill5.45.44.80.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:CustomerRelationships


Business
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312018-12-31
Value26711414514054167276
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill0.00.0391.9378.4128.60.00.0

us-gaap:OtherIntangibleAssets


Business
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312018-12-31
Value3.01.01110.010.04127
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill0.00.029.727.023.80.00.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet


Business
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312018-12-31
Value712330120111445446951122
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet100.0100.0100.0100.0100.0100.0100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet us-gaap:BusinessAcquisition

ctsh:ESGMobility


Business
Period End2021-06-30
Value134
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet18.8

ctsh:Magenic


Business
Period End2021-06-302021-03-31
Value246245
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet34.674.2

ctsh:Servian


Business
Period End2021-06-30
Value247
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet34.7

ctsh:TinRoof


Business
Period End2020-12-312020-09-30
Value153154
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet12.713.5

us-gaap:SeriesOfIndividuallyImmaterialBusinessAcquisitions


Business
Period End2020-12-312020-09-302020-06-302019-12-312018-12-312017-12-312016-12-31
Value202144144641122233287
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet16.812.626.59.2100.00.00.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilities

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilities


Business
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312018-12-31
Value1015.03533224950
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilities100.0100.0100.0100.0100.0100.0100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilities us-gaap:BusinessAcquisition

ctsh:A10thMagnitude


Business
Period End2020-12-312020-09-30
Value5.06.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilities14.318.2

ctsh:CollaborativeSolutions


Business
Period End2020-12-312020-09-302020-06-30
Value5.05.04.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilities14.315.218.2

ctsh:ESGMobility


Business
Period End2021-06-30
Value65
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilities64.4

ctsh:Magenic


Business
Period End2021-06-302021-03-31
Value7.05.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilities6.9100.0

ctsh:Servian


Business
Period End2021-06-30
Value29
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilities28.7

ctsh:TinRoof


Business
Period End2020-12-312020-09-30
Value2.01.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilities5.73.0

us-gaap:SeriesOfIndividuallyImmaterialBusinessAcquisitions


Business
Period End2020-12-312020-09-302020-06-302019-12-312018-12-312017-12-312016-12-31
Value15131810.0506751
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilities42.939.481.820.4100.00.00.0

us-gaap:CapitalizedComputerSoftwareAccumulatedAmortization

us-gaap:CapitalizedComputerSoftwareAccumulatedAmortization


Capitalized
Period End2020-12-312019-12-312018-12-312017-12-31
Value73462412
Percentage of CapitalizedComputerSoftwareAccumulatedAmortization100.0100.0100.0100.0

us-gaap:CapitalizedComputerSoftwareGross

us-gaap:CapitalizedComputerSoftwareGross


Capitalized
Period End2020-12-312019-12-312018-12-312017-12-31
Value1591298552
Percentage of CapitalizedComputerSoftwareGross100.0100.0100.0100.0

us-gaap:CapitalizedContractCostNet

us-gaap:CapitalizedContractCostNet


Capitalized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value425443467482494498485485454423400383353330303
Percentage of CapitalizedContractCostNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashAndCashEquivalentsFairValueDisclosure us-gaap:BalanceSheetLocation, us-gaap:CashAndCashEquivalents, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:CashAndCashEquivalentsFairValueDisclosure

us-gaap:CashEquivalents, us-gaap:BankTimeDeposits, us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value4.0532035781216
Percentage of CashAndCashEquivalentsFairValueDisclosure100.0100.0100.0100.0100.0

us-gaap:CashEquivalents, us-gaap:CommercialPaper, us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


Cash
Period End2021-06-302021-03-312020-12-312020-03-312018-12-31
Value285310200149868
Percentage of CashAndCashEquivalentsFairValueDisclosure7125.0584.998.50.00.0

us-gaap:CashEquivalents, us-gaap:MoneyMarketFunds, us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value26027220925132066156216461705103
Percentage of CashAndCashEquivalentsFairValueDisclosure6500.0513.2103.0434.8169.90.00.00.00.0

us-gaap:CashAndCashEquivalentsFairValueDisclosure us-gaap:BalanceSheetLocation, us-gaap:CashAndCashEquivalents, us-gaap:FairValueByMeasurementFrequency

us-gaap:CashEquivalents, us-gaap:BankTimeDeposits, us-gaap:FairValueMeasurementsRecurring


Cash
Period End2020-09-302020-06-30
Value5781216
Percentage of CashAndCashEquivalentsFairValueDisclosure100.0100.0

us-gaap:CashEquivalents, us-gaap:MoneyMarketFunds, us-gaap:FairValueMeasurementsRecurring


Cash
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value25132066156216461705103
Percentage of CashAndCashEquivalentsFairValueDisclosure434.8169.90.00.00.00.0

us-gaap:CashAndCashEquivalentsFairValueDisclosure us-gaap:CashAndCashEquivalents, us-gaap:FairValueByMeasurementFrequency

us-gaap:BankTimeDeposits, us-gaap:FairValueMeasurementsRecurring


Cash
Period End2021-06-302021-03-312020-12-312016-06-302016-03-312015-03-312014-09-302014-06-302013-12-31
Value4.05320325323205050128
Percentage of CashAndCashEquivalentsFairValueDisclosure100.0100.0100.00.00.00.00.00.00.0

us-gaap:CommercialPaper, us-gaap:FairValueMeasurementsRecurring


Cash
Period End2021-06-302021-03-312020-12-312019-03-312018-12-312018-03-312017-12-312017-09-302017-03-312016-12-312016-06-302016-03-312015-09-302015-06-302014-12-312013-12-31
Value285310200166824838610.08.01311521347.96.17.422
Percentage of CashAndCashEquivalentsFairValueDisclosure7125.0584.998.50.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:MoneyMarketFunds, us-gaap:FairValueMeasurementsRecurring


Cash
Period End2021-06-302021-03-312020-12-312019-12-312019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value2602722091646690353103401300335334317217350624263262260495308154961761141848694
Percentage of CashAndCashEquivalentsFairValueDisclosure6500.0513.2103.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ContractWithCustomerAssetGross

us-gaap:ContractWithCustomerAssetGross


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value352336315333339359334365350335305320318307306
Percentage of ContractWithCustomerAssetGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerLiability

us-gaap:ContractWithCustomerLiability


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value389435419317365396336336348404348316385430431
Percentage of ContractWithCustomerLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CostMethodInvestments

us-gaap:CostMethodInvestments


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-312017-12-312016-12-31
Value3000000.04000000.04000000.04000000.04000000.03000000.08000000.08000000.07000000.05000000.0
Percentage of CostMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtWeightedAverageInterestRate us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:DebtWeightedAverageInterestRate

ctsh:CreditAgreement, us-gaap:LoansPayable


Debt
Period End2020-12-312019-12-31
Value1.02.6
Percentage of DebtWeightedAverageInterestRate100.0100.0

us-gaap:DeferredFinanceCostsNet us-gaap:DebtInstrument

us-gaap:DeferredFinanceCostsNet

ctsh:CreditAgreement


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value2000000.02000000.02000000.03000000.03000000.03000000.03000000.0
Percentage of DeferredFinanceCostsNet100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxAssetsNet

us-gaap:DeferredIncomeTaxAssetsNet


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value308307445563669594585
Percentage of DeferredIncomeTaxAssetsNet100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredIncomeTaxLiabilities


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value3243223443182792753013825303028
Percentage of DeferredIncomeTaxLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredRevenueCurrent

us-gaap:DeferredRevenueCurrent


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value3564033832853193543132652853402862443083603833333373973062813213493232622883302241691791661821411341381491161061071058784828451
Percentage of DeferredRevenueCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredRevenueNoncurrent

us-gaap:DeferredRevenueNoncurrent


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value33323632464223716364627277701041141331281511581756749535047800.0
Percentage of DeferredRevenueNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:DeferredTaxAssetsDeferredIncome

us-gaap:DeferredTaxAssetsDeferredIncome


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value413951556972563431333732
Percentage of DeferredTaxAssetsDeferredIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsGross


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value592896614600708630535500409310241192
Percentage of DeferredTaxAssetsGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value36271315145.99.9998.831109.7429.6639.304
Percentage of DeferredTaxAssetsOperatingLossCarryforwards100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax

us-gaap:DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value10930734036927421918421717812010081
Percentage of DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value25917113312516519414513299603832
Percentage of DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseOther

us-gaap:DeferredTaxAssetsTaxDeferredExpenseOther


Deferred
Period End2020-12-312019-12-312018-12-31
Value14735260
Percentage of DeferredTaxAssetsTaxDeferredExpenseOther100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesDeferredExpense

us-gaap:DeferredTaxLiabilitiesDeferredExpense


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value10511079650.0
Percentage of DeferredTaxLiabilitiesDeferredExpense100.0100.0100.0100.00.0

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DeferredTaxLiabilitiesOther


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value21259.044130.0
Percentage of DeferredTaxLiabilitiesOther100.0100.0100.0100.0100.00.0

us-gaap:DefinedBenefitPlanFairValueOfPlanAssets us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanFairValueOfPlanAssets

ctsh:GratuityPlan


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value186160136138103
Percentage of DefinedBenefitPlanFairValueOfPlanAssets100.0100.0100.0100.0100.0

us-gaap:DepositsAssets us-gaap:BalanceSheetLocation, us-gaap:IncomeTaxAuthority, us-gaap:IncomeTaxAuthorityName

us-gaap:DepositsAssets

us-gaap:OtherNoncurrentAssets, us-gaap:ForeignCountry, us-gaap:MinistryOfFinanceIndia


Deposits
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value676868676666
Percentage of DepositsAssets100.0100.0100.0100.0100.0100.0

us-gaap:DepositsAssets us-gaap:IncomeTaxAuthority, us-gaap:IncomeTaxAuthorityName

us-gaap:ForeignCountry, us-gaap:MinistryOfFinanceIndia


Deposits
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-04-30
Value675000500050005000500050005000500050000.05000725000
Percentage of DepositsAssets100.07352.97352.97462.77575.87575.80.00.00.00.00.00.00.00.0

us-gaap:DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral

us-gaap:DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value45657248131343406355277.040107154133155156515416229.26.414206.612.9513.3954.58611
Percentage of DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

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


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value354545298.032
Percentage of DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral77.869.262.560.461.574.4

us-gaap:OtherNoncurrentAssets, us-gaap:ForeignExchangeContract, us-gaap:CashFlowHedging, us-gaap:DesignatedAsHedgingInstrument


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value9.01826164.08.0
Percentage of DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral20.027.736.133.330.818.6

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

us-gaap:OtherCurrentAssets, us-gaap:ForeignExchangeForward, us-gaap:Nondesignated


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value1.02.01.03.01.08.03.02.01.0
Percentage of DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral2.23.11.46.27.761.57.05.03.7

us-gaap:DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation

us-gaap:ForeignExchangeContract, us-gaap:CashFlowHedging, us-gaap:DesignatedAsHedgingInstrument


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value446371451240
Percentage of DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral97.896.998.693.892.393.0

us-gaap:DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation

us-gaap:ForeignExchangeForward, us-gaap:Nondesignated


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value1.02.01.03.01.08.03.02.01.0
Percentage of DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral2.23.11.46.27.761.57.05.03.7

us-gaap:DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral

us-gaap:DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral


Derivative
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value4.01.028417810.020151734115433.05.04.06.0134.04.6141524596178107138170230356
Percentage of DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

ctsh:AccruedExpensesAndOtherCurrentLiabilities, us-gaap:ForeignExchangeContract, us-gaap:CashFlowHedging, us-gaap:DesignatedAsHedgingInstrument


Derivative
Period End2021-06-302020-09-302020-06-302019-12-31
Value2.02.0217.0
Percentage of DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral50.07.151.270.0

us-gaap:OtherNoncurrentLiabilities, us-gaap:ForeignExchangeContract, us-gaap:CashFlowHedging, us-gaap:DesignatedAsHedgingInstrument


Derivative
Period End2021-06-302020-06-302019-12-31
Value2.0172.0
Percentage of DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral50.041.520.0

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

ctsh:AccruedExpensesAndOtherCurrentLiabilities, us-gaap:ForeignExchangeForward, us-gaap:Nondesignated


Derivative
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302018-12-31
Value1.0263.01.06.04.0
Percentage of DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral100.092.97.310.030.011.8

us-gaap:OtherCurrentLiabilities, us-gaap:ForeignExchangeForward, us-gaap:Nondesignated


Derivative
Period End2020-12-312020-03-312019-12-312018-12-31
Value1.00.01.04.0
Percentage of DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral100.00.010.011.8

us-gaap:DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation

us-gaap:ForeignExchangeContract, us-gaap:CashFlowHedging, us-gaap:DesignatedAsHedgingInstrument


Derivative
Period End2021-06-302020-09-302020-06-302019-12-31
Value4.02.0389.0
Percentage of DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral100.07.192.790.0

us-gaap:DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation

us-gaap:ForeignExchangeForward, us-gaap:Nondesignated


Derivative
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value1.0263.00.01.06.04.0
Percentage of DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral100.092.97.30.010.030.011.8

us-gaap:DerivativeLiabilitiesCurrent

us-gaap:DerivativeLiabilitiesCurrent


Derivative
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value1.02824428.01615162567182.05.02.06.0134.04.56.28.0103045659710511613819122617711213010616475126358.219127.50420
Percentage of DerivativeLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeNotionalAmount us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation

us-gaap:DerivativeNotionalAmount

ctsh:ForeignExchangeContractMaturity2020, us-gaap:CashFlowHedging, us-gaap:DesignatedAsHedgingInstrument


Derivative
Period End2020-09-302020-06-302019-12-31
Value4007731505
Percentage of DerivativeNotionalAmount100.0100.0100.0

ctsh:ForeignExchangeContractMaturity2021, us-gaap:CashFlowHedging, us-gaap:DesignatedAsHedgingInstrument


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value8151125147013151158883
Percentage of DerivativeNotionalAmount0.00.00.0328.8149.858.7

ctsh:ForeignExchangeContractMaturity2022, us-gaap:CashFlowHedging, us-gaap:DesignatedAsHedgingInstrument


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value10989208035483170.0
Percentage of DerivativeNotionalAmount0.00.00.0137.041.00.0

ctsh:ForeignExchangeContractMaturity2023, us-gaap:CashFlowHedging, us-gaap:DesignatedAsHedgingInstrument


Derivative
Period End2021-06-302021-03-31
Value325140
Percentage of DerivativeNotionalAmount0.00.0

us-gaap:ForeignExchangeContract, us-gaap:CashFlowHedging, us-gaap:DesignatedAsHedgingInstrument


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value223821852273226322482388
Percentage of DerivativeNotionalAmount0.00.00.0565.8290.8158.7

us-gaap:ForeignExchangeOption, us-gaap:CashFlowHedging, us-gaap:DesignatedAsHedgingInstrument


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value12813313312875
Percentage of DerivativeNotionalAmount0.00.00.032.09.7

us-gaap:DerivativeNotionalAmount us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation

us-gaap:ForeignExchangeForward, us-gaap:Nondesignated


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value79657463725751156338702507
Percentage of DerivativeNotionalAmount0.00.00.0643.8149.50.046.60.0

us-gaap:EmployeeRelatedLiabilitiesCurrent

us-gaap:EmployeeRelatedLiabilitiesCurrent


Employee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value14721359160713771117952123911581063931121610539288481272126210268571134111695580712721053782623906837741606894755591514661610490437632554463363533356
Percentage of EmployeeRelatedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized us-gaap:DeferredCompensationArrangementWithIndividualShareBasedPaymentsByTypeOfDeferredCompensation

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized

ctsh:PerformanceStockUnits


Employee
Period End2020-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value346760475582707164
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestrictedStockUnitsRSU


Employee
Period End2020-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value247288282222219227117
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized726.5429.9470.0472.3398.4274.5167.3

us-gaap:EquityMethodInvestments

us-gaap:EquityMethodInvestments


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-312017-12-312016-12-312016-09-302016-06-302015-12-31
Value3331313534379.066675760590.0
Percentage of EquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue

us-gaap:FairValueInputsLevel3


Fair
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-312018-12-31
Value40575454203823
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityNoncurrent

us-gaap:FinanceLeaseLiabilityNoncurrent


Finance
Period End2020-12-312019-12-31
Value1115
Percentage of FinanceLeaseLiabilityNoncurrent100.0100.0

us-gaap:FinanceLeaseRightOfUseAsset

us-gaap:FinanceLeaseRightOfUseAsset


Finance
Period End2020-12-312019-12-31
Value1416
Percentage of FinanceLeaseRightOfUseAsset100.0100.0

us-gaap:FinanceLeaseRightOfUseAssetAccumulatedAmortization

us-gaap:FinanceLeaseRightOfUseAssetAccumulatedAmortization


Finance
Period End2020-12-312019-12-31
Value2314
Percentage of FinanceLeaseRightOfUseAssetAccumulatedAmortization100.0100.0

us-gaap:FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization

us-gaap:FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization


Finance
Period End2020-12-312019-12-31
Value3730
Percentage of FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value8276716184713372261319773543729
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization us-gaap:FiniteLivedIntangibleAssetsByMajorClass

ctsh:TrademarksAndOther


Finite
Period End2020-12-312019-12-31
Value5142
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization6.26.3

us-gaap:CustomerRelationships


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value4903903983042191571128867503622
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization59.358.164.464.565.069.785.390.091.593.896.676.8

us-gaap:DevelopedTechnologyRights


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value28623918714096528.692.9942.2041.2750.6014.121
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization34.635.630.329.728.523.26.63.13.02.41.613.9

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths


Finite
Period End2020-12-31
Value159
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive


Finite
Period End2020-12-31
Value99
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearFive100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour


Finite
Period End2020-12-31
Value102
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearFour100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree


Finite
Period End2020-12-31
Value107
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearThree100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo


Finite
Period End2020-12-31
Value150
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo100.0

us-gaap:FiniteLivedIntangibleAssetsGross us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsGross

ctsh:TrademarksAndOther


Finite
Period End2020-12-312019-12-31
Value8071
Percentage of FiniteLivedIntangibleAssetsGross100.0100.0

us-gaap:CustomerRelationships


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value133311811277100584565064420314213411794
Percentage of FiniteLivedIntangibleAssetsGross1666.21663.40.00.00.00.00.00.00.00.00.00.0

us-gaap:DevelopedTechnologyRights


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value3883883553333323323324.254.2224.1583.1297.206
Percentage of FiniteLivedIntangibleAssetsGross485.0546.50.00.00.00.00.00.00.00.00.00.0

us-gaap:ForeignCurrencyContractAssetFairValueDisclosure us-gaap:BalanceSheetLocation, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:ForeignCurrencyContractAssetFairValueDisclosure

us-gaap:OtherCurrentAssets, us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


Foreign
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value364746329.01335283525127.04098134109112102343713167.66.011122.7312.7171.72711
Percentage of ForeignCurrencyContractAssetFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherNoncurrentAssets, us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


Foreign
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value9.01826164.08.0122830159.02024435417162.95.91.60.43.58.03.8790.2341.668
Percentage of ForeignCurrencyContractAssetFairValueDisclosure25.038.356.550.044.422.942.980.0120.0125.09.214.922.038.452.950.044.822.035.321.16.730.762.0142.08.696.6

us-gaap:ForeignCurrencyContractAssetFairValueDisclosure us-gaap:BalanceSheetLocation, us-gaap:FairValueByMeasurementFrequency

us-gaap:OtherCurrentAssets, us-gaap:FairValueMeasurementsRecurring


Foreign
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value364746329.01335283525127.04098134109112102343713167.66.011122.7312.7171.72711
Percentage of ForeignCurrencyContractAssetFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherNoncurrentAssets, us-gaap:FairValueMeasurementsRecurring


Foreign
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value9.01826164.08.0122830159.02024435417162.95.91.60.43.58.03.8790.2341.668
Percentage of ForeignCurrencyContractAssetFairValueDisclosure25.038.356.550.044.422.942.980.0120.0125.09.214.922.038.452.950.044.822.035.321.16.730.762.0142.08.696.6

us-gaap:ForeignCurrencyContractsLiabilityFairValueDisclosure us-gaap:BalanceSheetLocation, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:ForeignCurrencyContractsLiabilityFairValueDisclosure

ctsh:AccruedExpensesAndOtherCurrentLiabilities, us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


Foreign
Period End2021-06-302020-09-302020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value2.028248.01615162567182.05.02.06.0134.04.56.28.01030456597105116191
Percentage of ForeignCurrencyContractsLiabilityFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherCurrentLiabilities, us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


Foreign
Period End2020-12-312020-03-312019-12-312018-12-31
Value1.0428.025
Percentage of ForeignCurrencyContractsLiabilityFairValueDisclosure0.00.0100.0100.0

us-gaap:OtherNoncurrentLiabilities, us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


Foreign
Period End2021-06-302020-06-302020-03-312019-12-312019-09-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value2.017362.04.01.09.048251.02.00.00.18.27.3132916129.9623354164
Percentage of ForeignCurrencyContractsLiabilityFairValueDisclosure100.070.80.025.025.06.236.071.6138.950.0100.00.02.2132.391.2123.994.536.519.110.231.646.985.9

us-gaap:ForeignCurrencyContractsLiabilityFairValueDisclosure us-gaap:BalanceSheetLocation, us-gaap:FairValueByMeasurementFrequency

ctsh:AccruedExpensesAndOtherCurrentLiabilities, us-gaap:FairValueMeasurementsRecurring


Foreign
Period End2021-06-302020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value2.02824428.01615162567182.05.02.06.0134.04.56.28.01030456597105116191
Percentage of ForeignCurrencyContractsLiabilityFairValueDisclosure100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherCurrentLiabilities, us-gaap:FairValueMeasurementsRecurring


Foreign
Period End2020-12-312019-12-312018-12-31
Value1.08.025
Percentage of ForeignCurrencyContractsLiabilityFairValueDisclosure0.0100.0100.0

us-gaap:OtherNoncurrentLiabilities, us-gaap:FairValueMeasurementsRecurring


Foreign
Period End2021-06-302020-06-302020-03-312019-12-312019-09-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value2.017362.04.01.09.048251.02.00.00.18.27.3132916129.9623354164
Percentage of ForeignCurrencyContractsLiabilityFairValueDisclosure100.070.80.025.025.06.236.071.6138.950.0100.00.02.2132.391.2123.994.536.519.110.231.646.985.9

us-gaap:ForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAtFairValueNet us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation

us-gaap:ForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAtFairValueNet

us-gaap:ForeignExchangeForward, us-gaap:Nondesignated


Foreign
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value1.02.0-23.0-2.08.02.0-4.0-6.0-1.0-3.02.04.0-1.0-5.02.0-6.0-12.0-4.0-4.12.3-2.8-0.80.9-0.8-3.31.9
Percentage of ForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAtFairValueNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue us-gaap:FinancialInstrument

us-gaap:HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue

us-gaap:CommercialPaper


Held
Period End2021-06-302021-03-312020-03-312019-12-312019-06-302019-03-312018-12-312017-12-31
Value3.07.0497027992268394
Percentage of HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:HeldToMaturitySecuritiesCurrent us-gaap:BalanceSheetLocation

us-gaap:HeldToMaturitySecuritiesCurrent

us-gaap:ShortTermInvestments


Held
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value273414108130287
Percentage of HeldToMaturitySecuritiesCurrent100.0100.0100.0100.0100.0100.0

us-gaap:HeldToMaturitySecuritiesCurrent us-gaap:FinancialInstrument, us-gaap:InvestmentType

ctsh:CorporateAndOtherDebtSecurities, us-gaap:ShortTermInvestments


Held
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value7.01414305614610177257417546346
Percentage of HeldToMaturitySecuritiesCurrent25.941.2100.027.843.10.035.20.00.00.00.00.0

us-gaap:CommercialPaper, us-gaap:ShortTermInvestments


Held
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value20207874175186147553409519399
Percentage of HeldToMaturitySecuritiesCurrent74.158.872.256.90.064.80.00.00.00.00.0

us-gaap:HeldToMaturitySecuritiesCurrent us-gaap:InvestmentType

us-gaap:ShortTermInvestments


Held
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value27341410813032128722481082610651133987943745677543341
Percentage of HeldToMaturitySecuritiesCurrent100.0100.0100.0100.0100.00.0100.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:HeldToMaturitySecuritiesFairValue us-gaap:FinancialInstrument, us-gaap:InvestmentType

us-gaap:HeldToMaturitySecuritiesFairValue

ctsh:CorporateAndOtherDebtSecurities, us-gaap:ShortTermInvestments


Held
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value7.01414305614610177258418546345
Percentage of HeldToMaturitySecuritiesFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommercialPaper, us-gaap:ShortTermInvestments


Held
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value20207875175186148553410518397
Percentage of HeldToMaturitySecuritiesFairValue285.7142.9260.0133.9119.9184.2192.2214.398.194.9115.1

us-gaap:HeldToMaturitySecuritiesFairValue us-gaap:InvestmentType

us-gaap:ShortTermInvestments


Held
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value27341410813132128722581182810641128984941742677543341
Percentage of HeldToMaturitySecuritiesFairValue385.7242.9100.0360.0233.9219.9284.2292.2314.3198.1194.90.00.00.0215.10.00.00.0

us-gaap:IndefiniteLivedTradeNames

us-gaap:IndefiniteLivedTradeNames


Indefinite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value72727263636363
Percentage of IndefiniteLivedTradeNames100.0100.0100.0100.0100.0100.0100.0

us-gaap:InsuranceReceivableForMalpractice

us-gaap:InsuranceReceivableForMalpractice


Insurance
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value10.03.07.07.020
Percentage of InsuranceReceivableForMalpractice100.0100.0100.0100.0100.0

us-gaap:IntangibleAssetsGrossExcludingGoodwill

us-gaap:IntangibleAssetsGrossExcludingGoodwill


Intangible
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value1873171217681452128810901085
Percentage of IntangibleAssetsGrossExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0

us-gaap:InvestmentsFairValueDisclosure us-gaap:BalanceSheetLocation, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:InvestmentType

us-gaap:InvestmentsFairValueDisclosure

us-gaap:ShortTermInvestments, us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring, us-gaap:EquitySecurities


Investments
Period End2020-09-302020-06-302019-12-31
Value272726
Percentage of InvestmentsFairValueDisclosure100.0100.0100.0

us-gaap:ShortTermInvestments, us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:BankTimeDeposits


Investments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value3231243.04.03.0466
Percentage of InvestmentsFairValueDisclosure0.00.00.014.811.11792.3

us-gaap:InvestmentsFairValueDisclosure us-gaap:BalanceSheetLocation, us-gaap:FairValueByMeasurementFrequency, us-gaap:InvestmentType

us-gaap:ShortTermInvestments, us-gaap:FairValueMeasurementsRecurring, us-gaap:BankTimeDeposits


Investments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value3231243.04.03.0466
Percentage of InvestmentsFairValueDisclosure0.00.00.014.811.11792.3

us-gaap:ShortTermInvestments, us-gaap:FairValueMeasurementsRecurring, us-gaap:EquitySecurities


Investments
Period End2020-09-302020-06-302019-12-31
Value272726
Percentage of InvestmentsFairValueDisclosure100.0100.0100.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths


Lessee
Period End2020-12-31
Value260
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths100.0

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

us-gaap:LineOfCredit

us-gaap:RevolvingCreditFacility, ctsh:CreditAgreement, us-gaap:UnsecuredDebt


Line
Period End2020-09-302020-06-302020-03-312019-12-31
Value1740174017400.0
Percentage of LineOfCredit100.0100.0100.00.0

us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity us-gaap:CreditFacility

us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity

ctsh:WorkingCapitalFacility


Line
Period End2021-06-302021-03-312021-02-282020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value1751300013000130001300013000130001300013000
Percentage of LineOfCreditFacilityMaximumBorrowingCapacity100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths us-gaap:DebtInstrument

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths

ctsh:CreditAgreement


Long
Period End2020-12-31
Value38
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree us-gaap:DebtInstrument

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree

ctsh:CreditAgreement


Long
Period End2020-12-31
Value627
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo us-gaap:DebtInstrument

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo

ctsh:CreditAgreement


Long
Period End2020-12-31
Value38
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo100.0

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent


Operating
Period End2020-12-312019-12-31
Value5.76.0
Percentage of OperatingLeaseWeightedAverageDiscountRatePercent100.0100.0

us-gaap:OperatingLossCarryforwards us-gaap:IncomeTaxAuthority

us-gaap:OperatingLossCarryforwards

us-gaap:ForeignCountry


Operating
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value55393938346.120
Percentage of OperatingLossCarryforwards100.0100.0100.0100.0100.0100.0100.0

us-gaap:InternalRevenueServiceIRS


Operating
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value988010.012138.519
Percentage of OperatingLossCarryforwards178.2205.125.631.638.2139.398.2

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent us-gaap:RetirementPlanType

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent

ctsh:GratuityPlan


Pension
Period End2020-12-312019-12-312018-12-31
Value124135141
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent100.0100.0100.0

us-gaap:PrepaidTaxes

us-gaap:PrepaidTaxes


Prepaid
Period End2021-06-302020-12-31
Value370274
Percentage of PrepaidTaxes100.0100.0

us-gaap:RestrictedInvestments us-gaap:BalanceSheetLocation

us-gaap:RestrictedInvestments

ctsh:Longterminvestments


Restricted
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value397404405402391393
Percentage of RestrictedInvestments100.0100.0100.0100.0100.0100.0

us-gaap:ShortTermInvestments


Restricted
Period End2020-12-312019-12-31
Value405414
Percentage of RestrictedInvestments100.00.0

us-gaap:RestrictedInvestments us-gaap:BalanceSheetLocation, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

ctsh:Longterminvestments, us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


Restricted
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value397404405402391393
Percentage of RestrictedInvestments100.0100.0100.0100.0100.0100.0

us-gaap:RestrictedInvestments us-gaap:BalanceSheetLocation, us-gaap:FairValueByMeasurementFrequency

ctsh:Longterminvestments, us-gaap:FairValueMeasurementsRecurring


Restricted
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value397404405402391393
Percentage of RestrictedInvestments100.0100.0100.0100.0100.0100.0

us-gaap:RestructuringReserveCurrent us-gaap:RestructuringCostAndReserve

us-gaap:RestructuringReserveCurrent

us-gaap:EmployeeSeverance


Restructuring
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value171537384728270.0
Percentage of RestructuringReserveCurrent100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:RevenueRemainingPerformanceObligation

us-gaap:RevenueRemainingPerformanceObligation


Revenue
Period End2021-06-302021-03-312020-12-312020-09-30
Value1705164814461704
Percentage of RevenueRemainingPerformanceObligation100.0100.0100.0100.0

us-gaap:RevenueRemainingPerformanceObligationPercentage

us-gaap:RevenueRemainingPerformanceObligationPercentage


Revenue
Period End2021-06-302021-03-312020-12-312020-09-30
Value75.075.075.070.0
Percentage of RevenueRemainingPerformanceObligationPercentage100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber us-gaap:DeferredCompensationArrangementWithIndividualShareBasedPaymentsByTypeOfDeferredCompensation

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber

ctsh:PerformanceStockUnits


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value1700000.02000000.03300000.02700000.02700000.02500000.03644600.01873800.01771300.01828900.01105000.0921410.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestrictedStockUnitsRSU


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value4400000.04500000.05000000.05200000.04800000.04700000.05387100.01798400.01784700.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber258.8225.0151.5192.6177.8188.0147.896.0100.8

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue us-gaap:DeferredCompensationArrangementWithIndividualShareBasedPaymentsByTypeOfDeferredCompensation

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

ctsh:PerformanceStockUnits


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value62.669.7371.5959.1555.2455.6947.4278.4666.8464.5644.1528.14
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestrictedStockUnitsRSU


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value64.0967.0769.6463.856.4555.548.7377.869.39
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue102.496.297.3107.9102.299.7102.899.2103.8

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant us-gaap:DeferredCompensationArrangementWithIndividualShareBasedPaymentsByTypeOfDeferredCompensation

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant

ctsh:A2017IncentivePlan


Share
Period End2020-12-312019-12-312018-12-312017-12-31
Value28343846
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant100.0100.0100.0100.0

us-gaap:EmployeeStock


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value5.98.9112.45.08.210
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant20.525.930.55.20.00.00.0

us-gaap:TradingSecuritiesEquity us-gaap:BalanceSheetLocation

us-gaap:TradingSecuritiesEquity

us-gaap:ShortTermInvestments


Trading
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value272727272726
Percentage of TradingSecuritiesEquity100.0100.0100.0100.0100.0100.0

us-gaap:TradingSecuritiesEquity us-gaap:BalanceSheetLocation, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:ShortTermInvestments, us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring


Trading
Period End2021-06-302021-03-312020-12-312020-03-312019-12-312019-09-302018-12-31
Value27272727262625
Percentage of TradingSecuritiesEquity100.0100.0100.00.0100.00.00.0

us-gaap:TradingSecuritiesEquity us-gaap:BalanceSheetLocation, us-gaap:FairValueByMeasurementFrequency

us-gaap:ShortTermInvestments, us-gaap:FairValueMeasurementsRecurring


Trading
Period End2021-06-302020-03-312019-12-312019-09-302018-12-31
Value2727262625
Percentage of TradingSecuritiesEquity100.00.0100.00.00.0

us-gaap:TradingSecuritiesEquity us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring


Trading
Period End2021-03-312020-12-312019-12-31
Value272726
Percentage of TradingSecuritiesEquity100.0100.0100.0

us-gaap:UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued

us-gaap:UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued


Unrecognized
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value2216118.07.011118.7258.209106.7663.8
Percentage of UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ValuationAllowancesAndReservesBalance us-gaap:ValuationAllowancesAndReservesType

us-gaap:ValuationAllowancesAndReservesBalance

us-gaap:ValuationAllowanceOfDeferredTaxAssets


Valuation
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value29241110.010.010115.6596.2881010107.8835.887
Percentage of ValuationAllowancesAndReservesBalance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:WarrantyReserves


Valuation
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value323332302623211714129.0946.5755.6694.234
Percentage of ValuationAllowancesAndReservesBalance110.3137.5290.9300.0260.0227.9186.1312.8236.0118.685.164.371.971.9

Line plots across dimensions of each concept


TTM Greenblatt ROC
_
(None,)
T T M  Greenblatt  R O C_
us-gaap:OperatingIncomeLoss
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
('us-gaap:OperatingSegments', None)
Operating Income Lossus-gaap: Consolidation Items, us-gaap: Statement Business Segments
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ContractWithCustomerBasisOfPricing
(None,)
Revenue From Contract With Customer Excluding Assessed Taxus-gaap: Contract With Customer Basis Of Pricing
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ProductOrService
(None,)
Revenue From Contract With Customer Excluding Assessed Taxus-gaap: Product Or Service
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:StatementBusinessSegments
(None,)
Revenue From Contract With Customer Excluding Assessed Taxus-gaap: Statement Business Segments
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:StatementGeographical
(None,)