TTEC


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

Table of contents



us-gaap:CommonStockSharesOutstanding
us-gaap:StatementEquityComponents

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

us-gaap:CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization

us-gaap:CostsAndExpenses

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

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

us-gaap:IncomeTaxesPaid

us-gaap:InterestExpense

us-gaap:InterestPaidNet

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest

us-gaap:NonoperatingIncomeExpense

us-gaap:OperatingIncomeLoss
us-gaap:StatementBusinessSegments

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossNetOfTax

us-gaap:OtherNonoperatingIncomeExpense
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation, us-gaap:IncomeStatementLocation
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome

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

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation, us-gaap:IncomeStatementLocation, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome
us-gaap:DerivativeInstrumentRisk, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents
us-gaap:Range, us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType
us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:StatementBusinessSegments
us-gaap:StatementGeographical

us-gaap:Revenues

us-gaap:SellingGeneralAndAdministrativeExpense

us-gaap:Assets
us-gaap:StatementBusinessSegments

us-gaap:Liabilities

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:AssetsCurrent

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
us-gaap:BalanceSheetLocation

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

us-gaap:ReceivablesNetCurrent

us-gaap:PrepaidExpenseAndOtherAssetsCurrent

us-gaap:AssetsNoncurrent

us-gaap:Goodwill
us-gaap:BusinessAcquisition
us-gaap:StatementBusinessSegments

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:DeferredTaxAssetsLiabilitiesNet

us-gaap:OperatingLeaseRightOfUseAsset
us-gaap:BusinessAcquisition

us-gaap:OtherAssetsNoncurrent
us-gaap:StatementGeographical

us-gaap:AccountsPayableCurrent

us-gaap:AccruedIncomeTaxesCurrent

us-gaap:AccruedLiabilitiesCurrent

us-gaap:ContractWithCustomerLiabilityCurrent

us-gaap:LiabilitiesCurrent

us-gaap:OperatingLeaseLiabilityCurrent
us-gaap:BusinessAcquisition

us-gaap:OtherLiabilitiesCurrent

us-gaap:LiabilitiesNoncurrent

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:MinorityInterest

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent
us-gaap:BusinessAcquisition
us-gaap:StatementScenario
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo
us-gaap:StatementScenario
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree
us-gaap:StatementScenario
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour
us-gaap:StatementScenario
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive
us-gaap:StatementScenario
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive
us-gaap:StatementScenario
us-gaap:OperatingLeaseLiability
us-gaap:StatementScenario
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue
us-gaap:StatementScenario
us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:TreasuryStockValue

us-gaap:MinorityInterest

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
us-gaap:StatementEquityComponents

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:AmortizationOfFinancingCosts

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss

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

us-gaap:ShareBasedCompensation
us-gaap:AwardType
us-gaap:AwardType, us-gaap:PlanName
us-gaap:IncomeStatementLocation

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment
us-gaap:StatementBusinessSegments

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxAssetsNet
us-gaap:IncomeTaxAuthority

us-gaap:UnrecognizedTaxBenefits

us-gaap:DeferredTaxAssetsValuationAllowance

ttec:AcquisitionAllowanceForCreditLosses

ttec:AcquisitionOfLongLivedAssetsThroughFinanceLeases

ttec:AmortizationOfContractAcquisitionCosts

ttec:BenefitExpenseToIncomeTaxesAcquisitionEarnouts

ttec:BenefitToIncomeTaxesRelatedToAmortizationOfPurchasedIntangibles

ttec:BusinessCombinationProFormaInformationAmortizationExpenseOfAcquireesSinceAcquisition

ttec:CashFlowHedgeGainLossReclassifiedToEarningsNetOfTax

ttec:ContingentConsiderationImputedInterestExpenseAndFairValueAdjustments

ttec:ContingentConsiderationPayableImputedInterestExpenseAndOtherAdjustments
us-gaap:BusinessAcquisition

ttec:EffectOfForeignCurrencyAllowanceForDoubtfulAccounts

ttec:IncomeTaxHolidayAggregateDollarAmountNet

ttec:IncomeTaxHolidayIncomeTaxExpenseBenefitsPerShare

ttec:IncreaseDecreaseInCapitalExpendituresIncurredButNotYetPaid

ttec:IncreaseDecreaseInDeferredRevenueAndOtherLiabilities

ttec:NetChangeInIncomeTaxOtherReconcilingItems

ttec:NetIncomeAttributableToNoncontrollingInterestExcludingMandatorilyRedeemableNoncontrollingInterest

ttec:OperatingLeaseModificationsAndReassessments

ttec:PaymentsOfContingentConsideration

ttec:ProfitLossExcludingTemporaryEquityNetIncome
us-gaap:StatementEquityComponents

ttec:RestructuringChargesBeforeAdjustments
us-gaap:RestructuringCostAndReserve

ttec:TemporaryEquityDistributions
us-gaap:IncomeStatementLocation
ttec:VariableLeaseCostNet

us-gaap:AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet

us-gaap:AllowanceForDoubtfulAccountsReceivableWriteOffs

us-gaap:AssetImpairmentCharges

us-gaap:BusinessAcquisitionsProFormaIncomeLossFromContinuingOperationsBeforeChangesInAccountingAndExtraordinaryItemsNetOfTax

us-gaap:BusinessAcquisitionsProFormaRevenue

us-gaap:BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1
us-gaap:BusinessAcquisition
us-gaap:Ownership

us-gaap:BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual

us-gaap:BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentFinancialLiabilities
us-gaap:Ownership

us-gaap:BusinessExitCosts1
us-gaap:StatementBusinessSegments

us-gaap:CashAcquiredFromAcquisition

us-gaap:CommonStockDividendsPerShareCashPaid

us-gaap:CommonStockDividendsPerShareDeclared
us-gaap:MajorCustomers
us-gaap:ConcentrationRiskPercentage1
us-gaap:LongtermDebtType
us-gaap:DebtInstrumentIncreaseDecreaseForPeriodNet

us-gaap:DepreciationAndAmortization
us-gaap:StatementBusinessSegments

us-gaap:DerivativeGainLossOnDerivativeNet

us-gaap:DividendsCommonStock
us-gaap:StatementEquityComponents

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:ExcessTaxBenefitFromShareBasedCompensationOperatingActivities
us-gaap:IncomeStatementLocation
us-gaap:FinanceLeaseInterestExpense

us-gaap:FinanceLeaseInterestPaymentOnLiability

us-gaap:FinanceLeasePrincipalPayments
us-gaap:IncomeStatementLocation
us-gaap:FinanceLeaseRightOfUseAssetAmortization

us-gaap:GainLossOnDispositionOfAssets

us-gaap:GainLossOnSaleOfBusiness
us-gaap:ConsolidatedEntities

us-gaap:GoodwillForeignCurrencyTranslationGainLoss
us-gaap:StatementBusinessSegments

us-gaap:GoodwillOtherIncreaseDecrease
us-gaap:StatementBusinessSegments
us-gaap:BusinessAcquisition
us-gaap:ImpairmentOfInvestments

us-gaap:IncomeLossFromSubsidiariesTaxExpenseBenefit

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:InvestmentIncomeInterest

us-gaap:LeaseCost

us-gaap:LineOfCreditFacilityAverageOutstandingAmount

us-gaap:LineOfCreditFacilityIncreaseDecreaseOtherNet
us-gaap:BusinessAcquisition

us-gaap:LineOfCreditFacilityInterestRateDuringPeriod
us-gaap:Range, us-gaap:VariableRate
us-gaap:VariableRate
us-gaap:BusinessAcquisition
us-gaap:NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1

us-gaap:NoncontrollingInterestIncreaseFromBusinessCombination
us-gaap:StatementEquityComponents
us-gaap:OciBeforeReclassificationsNetOfTaxAttributableToParent
us-gaap:IncomeStatementLocation
us-gaap:OperatingLeaseCost
us-gaap:StatementScenario
us-gaap:OperatingLeasePayments

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax

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

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeOtherNetOfTax

us-gaap:PaymentsForRestructuring
us-gaap:RestructuringCostAndReserve

us-gaap:PaymentsOfDebtIssuanceCosts

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation
us-gaap:BusinessAcquisition
us-gaap:PaymentsToAcquireBusinessesGross
us-gaap:BusinessAcquisition, us-gaap:StatementBusinessSegments
us-gaap:Ownership

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired

us-gaap:PaymentsToMinorityShareholders

us-gaap:ProceedsFromRepaymentsOfLinesOfCredit

us-gaap:ProceedsFromSaleOfProductiveAssets

us-gaap:ProvisionForDoubtfulAccounts
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome
us-gaap:ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome
us-gaap:ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent
us-gaap:StatementEquityComponents
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents
us-gaap:ReclassificationFromAociCurrentPeriodTax
us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:RelatedPartyTransactionPurchasesFromRelatedParty

us-gaap:RepaymentsOfOtherDebt

us-gaap:RestructuringCharges
us-gaap:PropertyPlantAndEquipmentByType, us-gaap:StatementBusinessSegments
us-gaap:RestructuringCostsAndAssetImpairmentCharges

us-gaap:RestructuringReservePeriodIncreaseDecrease
us-gaap:IncomeStatementLocation
us-gaap:IncomeStatementLocation, us-gaap:RestructuringCostAndReserve
us-gaap:RestructuringCostAndReserve

us-gaap:RestructuringReserveTranslationAdjustment
us-gaap:RestructuringCostAndReserve

us-gaap:RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability

us-gaap:SeveranceCosts1
us-gaap:StatementBusinessSegments
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted
us-gaap:IncomeStatementLocation
us-gaap:ShortTermLeaseCost
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures

us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures
us-gaap:StatementEquityComponents

us-gaap:StockholdersEquityOther
us-gaap:StatementEquityComponents
us-gaap:IncomeStatementLocation
us-gaap:SubleaseIncome

us-gaap:TaxAdjustmentsSettlementsAndUnusualProvisions

us-gaap:TemporaryEquityNetIncome

us-gaap:ValuationAllowanceDeferredTaxAssetChangeInAmount
us-gaap:IncomeStatementLocation
us-gaap:VariableLeaseCost

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment

dei:EntityNumberOfEmployees
us-gaap:Ownership

ttec:BasePurchasePriceToAcquireBusinesses
us-gaap:BalanceSheetLocation, us-gaap:BusinessAcquisition
ttec:BusinessAcquisitionFutureValueOfLiabilitiesIncurred
us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisition, us-gaap:StatementBusinessSegments
us-gaap:Ownership
us-gaap:Range, us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisition
ttec:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccruedExpenses
us-gaap:BusinessAcquisition
ttec:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccruedIncomeTaxes
us-gaap:BusinessAcquisition
ttec:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNet
us-gaap:FairValueByFairValueHierarchyLevel
ttec:DeferredCompensationPlanLiability
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

ttec:DeferredTaxLiabilitiesContractAcquisitionCosts

ttec:DeferredTaxLiabilitiesDepreciationAndAmortization
us-gaap:MajorCustomers
ttec:EntityWideAccountsReceivableMajorCustomerAmount
us-gaap:Currency, us-gaap:DerivativeInstrumentRisk
ttec:ForeignCurrencyCashFlowHedgeDerivativesMaturityNextTwelvesMonths

ttec:LeaseLiabilities

ttec:LeaseRightToUseAsset

ttec:LettersOfCreditIssuedOutsideLineOfCreditFacility

ttec:LineOfCreditFacilityLettersOfCreditIssued

ttec:LineOfCreditInitialBorrowingCapacity

ttec:OperatingLossCarryForwardsExpirationDatesYearAfterFive

ttec:OperatingLossCarryForwardsExpirationDatesYearFour

ttec:OperatingLossCarryForwardsExpirationDatesYearOne

ttec:OperatingLossCarryForwardsExpirationDatesYearThree

ttec:OperatingLossCarryForwardsExpirationDatesYearTwo

ttec:Operatinglosscarryforwardsexpirationdatesyearnoexpiration
us-gaap:BusinessAcquisition
ttec:PurchasePricePayableAcquiredDuringPeriod
us-gaap:StatementScenario
ttec:SubLeaseIncomeRollingThereafter
us-gaap:StatementScenario
ttec:SubleaseFutureMinimumIncomeCurrent
us-gaap:StatementScenario
ttec:SubleaseFutureMinimumIncomeDueInRollingCurrent
us-gaap:StatementScenario
ttec:SubleaseFutureMinimumIncomeDueInRollingFiveYears
us-gaap:StatementScenario
ttec:SubleaseFutureMinimumIncomeDueInRollingFourYears
us-gaap:StatementScenario
ttec:SubleaseFutureMinimumIncomeDueInRollingThreeYears
us-gaap:StatementScenario
ttec:SubleaseFutureMinimumIncomeDueInRollingTwoYears
us-gaap:StatementScenario
ttec:SubleaseFutureMinimumIncomeFiveYears
us-gaap:StatementScenario
ttec:SubleaseFutureMinimumIncomeFourYears
us-gaap:StatementScenario
ttec:SubleaseFutureMinimumIncomeThereafter
us-gaap:StatementScenario
ttec:SubleaseFutureMinimumIncomeThreeYears
us-gaap:StatementScenario
ttec:SubleaseFutureMinimumIncomeTwoYears
us-gaap:StatementScenario
ttec:SubleaseIncomeTotal
us-gaap:BusinessAcquisition, us-gaap:StatementBusinessSegments
ttec:UpFrontCashConsiderationPaidAcquiredEntity
us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:AccountsPayableRelatedPartiesCurrent

us-gaap:AccountsReceivableGrossCurrent

us-gaap:AccruedIncomeTaxesNoncurrent

us-gaap:AllowanceForDoubtfulAccountsReceivable

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent

us-gaap:AociLossCashFlowHedgeCumulativeGainLossAfterTax
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:AssetsFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:Range, us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh

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

us-gaap:BusinessCombinationContingentConsiderationLiabilityCurrent
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesDeferredRevenue
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities
us-gaap:BusinessAcquisition, us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet
us-gaap:BusinessAcquisition, us-gaap:StatementBusinessSegments
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:CashFlowHedgesDerivativeInstrumentsAtFairValueNet
us-gaap:FairValueByMeasurementFrequency

us-gaap:CommonStockValueOutstanding

us-gaap:ContractWithCustomerAssetGross

us-gaap:ContractWithCustomerAssetNet

us-gaap:ContractWithCustomerAssetNetCurrent

us-gaap:ContractWithCustomerAssetNetNoncurrent

us-gaap:ContractWithCustomerLiability

us-gaap:ContractWithCustomerLiabilityNoncurrent

us-gaap:DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible

us-gaap:DeferredCompensationLiabilityClassifiedNoncurrent

us-gaap:DeferredCreditsAndOtherLiabilitiesNoncurrent

us-gaap:DeferredIncomeTaxAssetsNet

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredTaxAssetsDeferredIncome

us-gaap:DeferredTaxAssetsDerivativeInstruments

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsInvestmentInSubsidiaries

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsTaxCreditCarryforwards

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsContingencies

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsDeferredRent

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsImpairmentLosses

us-gaap:DeferredTaxLiabilitiesDerivatives

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets

us-gaap:DeferredTaxLiabilitiesLeasingArrangements

us-gaap:DeferredTaxLiabilitiesOther
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:DerivativeAssets
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation
us-gaap:DerivativeFairValueOfDerivativeNet
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueByMeasurementFrequency

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

us-gaap:DividendsPayableCurrentAndNoncurrent

us-gaap:EmployeeRelatedLiabilitiesCurrent
us-gaap:BusinessAcquisition
us-gaap:AwardType
us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
us-gaap:BusinessAcquisition
us-gaap:EquityMethodInvestmentOwnershipPercentage
us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueHedgesAtFairValueNet
us-gaap:FairValueByMeasurementFrequency

us-gaap:FinanceLeaseLiability

us-gaap:FinanceLeaseLiabilityCurrent

us-gaap:FinanceLeaseLiabilityNoncurrent

us-gaap:FinanceLeaseLiabilityPaymentsDue

us-gaap:FinanceLeaseLiabilityPaymentsDueInNextRollingTwelveMonths

us-gaap:FinanceLeaseLiabilityPaymentsDueInRollingYearFive

us-gaap:FinanceLeaseLiabilityPaymentsDueInRollingYearFour

us-gaap:FinanceLeaseLiabilityPaymentsDueInRollingYearThree

us-gaap:FinanceLeaseLiabilityPaymentsDueInRollingYearTwo

us-gaap:FinanceLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFour

us-gaap:FinanceLeaseLiabilityPaymentsDueYearThree

us-gaap:FinanceLeaseLiabilityPaymentsDueYearTwo

us-gaap:FinanceLeaseLiabilityUndiscountedExcessAmount

us-gaap:FinanceLeaseRightOfUseAsset

us-gaap:FinanceLeaseWeightedAverageDiscountRatePercent

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization
ttec:FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo
us-gaap:BusinessAcquisition
us-gaap:IncomeTaxReceivable

us-gaap:IncomeTaxesReceivable
us-gaap:StatementScenario
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterRollingYearFive
us-gaap:StatementScenario
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearFive
us-gaap:StatementScenario
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearFour
us-gaap:StatementScenario
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearThree
us-gaap:StatementScenario
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearTwo
us-gaap:StatementScenario
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextRollingTwelveMonths
us-gaap:StatementScenario
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:LiabilitiesFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:LineOfCreditFacilityCurrentBorrowingCapacity

us-gaap:LineOfCreditFacilityRemainingBorrowingCapacity

us-gaap:LongTermLineOfCredit
us-gaap:Ownership
us-gaap:MinorityInterestOwnershipPercentageByParent

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

us-gaap:OperatingLossCarryforwards

us-gaap:OtherAccruedLiabilitiesNoncurrent

us-gaap:OtherIntangibleAssetsNet

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization
us-gaap:PropertyPlantAndEquipmentByType
us-gaap:StatementGeographical
us-gaap:Range
us-gaap:RatioOfIndebtednessToNetCapital1

us-gaap:ReceivablesFromCustomers

us-gaap:RestructuringReserve
us-gaap:RestructuringCostAndReserve

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueNonvested

us-gaap:SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit

us-gaap:StockRepurchaseProgramAuthorizedAmount1

us-gaap:StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1
us-gaap:TaxCreditCarryforward
us-gaap:TaxCreditCarryforwardAmount

us-gaap:TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:TreasuryStockShares

us-gaap:UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued

Plots across concepts


IncomeStatement
Other Comprehensive Income Loss Net Of Tax
Expenses
Other Nonoperating Income Expense
Balance Sheet
Operating Lease Liability Noncurrent
Assets
Operating Lease Right Of Use Asset
Current Assets
Prepaid Expense And Other Assets Current
NonCurrent Assets
Deferred Income Tax Assets Net
Liabilities
Dividends Payable Current And Noncurrent
Current Liabilities
Other Liabilities Current
Stockholders Equity
Accumulated Other Comprehensive Income Loss Net Of Tax
Per Share
Common Stock Dividends Per Share Cash Paid
CashFlow
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInOperatingActivities
Increase Decrease In Prepaid Deferred Expense And Other Assets
NetCashProvidedByUsedInInvestingActivities
Net Cash Provided By Used In Investing Activities
Shares
Treasury Stock Shares
NonoperatingIncomeExpense
Nonoperating Income Expense
FiniteLivedIntangibleAssets
Finite Lived Intangible Assets Accumulated Amortization
AccountsReceivable
Allowance For Doubtful Accounts Receivable Current

Tables

  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:CommonStockSharesOutstanding NANA46.737033NA46.68248246.59687346.48893846.48559546.38672746.29681646.19471746.19245846.03351645.9792945.86195945.84738945.69408145.76898646.11369346.70831147.31965248.23163248.48132348.4042548.23240548.36627248.45285248.805949.18602849.7147450.35288150.49681651.34641952.20094752.28856753.71234254.55510555.67842756.63531956.3366156.61526256.87412457.875269NANANA
 us-gaap:CommonStockSharesOutstanding us-gaap:StatementEquityComponents us-gaap:CommonStock▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▁▇▁▁▁▁▁▁▇▇▇▇▇▇█▁▁▁█▁█46.89346.81946.73746.73546.68246.59746.48946.48646.38746.29746.19546.19246.03445.97945.86245.84745.69445.76946.11446.70847.3248.2320.04848148.4040.0482320.0483660.0484530.0488060.0491860.04971550.35350.49751.34652.252.28853.71254.5550.0556780.0566350.05633756.6150.05687457.875NANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding ▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇███▁█▁▁▁47.40947.35547.23247.03146.86146.81346.83146.76846.68446.5946.3946.31646.40146.45246.46146.36746.1546.31546.67747.31548.22148.74648.85348.93649.06449.15849.51449.9450.11150.97351.46551.67852.62853.21754.19654.90555.7120.05741857.50.0577480.0579740.058797NA0.0610280.0623170.063483
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic ▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇████▁█▁▁▁46.8446.74346.73646.73246.61946.49846.48746.48146.31846.20346.19346.17246.01645.87145.85645.83845.66245.9546.38647.08147.87348.36848.43948.34548.32548.3748.71449.09349.35150.04550.43950.73251.86152.34753.26254.09355.1250.05649356.3090.0564760.0567130.05719NA0.0598080.0611170.061877
us-gaap:EarningsPerShareBasic ███▆▇▆▆▆▅▆▆▅▅▅▁▅▅▆▄▅▅▅▅▅▅▆▆▅▅▆▆▅▅▅▆▆▅▅▅▆▆▅▄▅▅▅1.011.080.950.460.670.460.610.390.250.410.440.120.120.1-0.90.320.320.42-0.010.240.240.230.350.230.30.390.450.270.340.40.390.350.240.340.380.530.10.280.290.450.390.180.089999999999999970.310.220.21
us-gaap:EarningsPerShareDiluted ███▆▇▆▆▆▅▆▆▅▅▅▁▅▅▆▄▅▅▅▅▅▅▆▆▅▅▆▆▅▅▅▆▆▅▅▅▆▆▅▄▅▅▅1.01.060.940.450.670.460.60.390.250.410.440.120.120.1-0.890.320.320.42-0.010.240.240.230.350.230.30.380.440.270.340.40.380.340.230.340.380.520.10.280.280.440.380.180.080000000000000070.310.220.21
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
 Operating Margin us-gaap:StatementBusinessSegments ttec:TtecDigital█▂▄▄▄▄▅▄▄▃▃▃▁107.99563.58775.71576.57177.14377.55682.35478.6278.51965.85369.55266.67952.5NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Operating Margin us-gaap:StatementBusinessSegments ttec:TtecEngage▆▇█▅▄▃▄▂▂▂▃▁▁446.799475.632495.259416.409375.938354.657378.972316.887313.996328.503349.581298.257297.353NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:ComprehensiveIncomeNetOfTax ▇▆█▇▇▃▆▄▅▅▅▄▃▃▁▅▅▆▂▄▃▅▅▂▄▄▄▃▅▅▄▅▂▅▅▆▄▄▁▄▅▄51.10443.55969.06654.12746.565-14.50540.72910.08720.9923.7221.718.727-15.904-1.008-39.86315.58322.50233.694-17.7460.161-1.11126.77518.84-16.746.1175.1993.639-14.00921.23816.3296.76914.943-21.41823.52724.2440.3731.7390.032062-38.5666345.40519.0910.014164NANANANA
us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest █▇▆▇▆▆▇▆▆▆▄▅▄▆▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▆▆▄▅▅▅▅▄▁▅▅▄3.6683.0342.0362.7491.8671.72.7151.6931.7871.5030.3531.3130.5161.4420.780.8991.241.0140.781.2020.7920.740.5830.9060.7310.8060.9511.0531.1670.9921.5241.6420.2770.5520.7741.3570.960.000948-2.6002840.6970.9560.000951NANANANA
us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest ▇▆█▇▇▃▆▄▅▅▅▄▃▄▁▅▅▆▃▄▄▅▅▃▄▄▄▃▅▅▄▅▂▅▅▆▄▄▁▄▅▄54.77246.59371.10256.87648.432-12.80543.44411.7822.77725.22322.06310.04-15.3880.434-39.08316.48223.74234.708-16.9661.363-0.31927.51519.423-15.8346.8486.0054.59-12.95622.40517.3218.29316.585-21.14124.07925.01441.732.6990.03301-41.1669186.10220.0470.015115NANANANA
us-gaap:CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization ▇▆█▅▄▃▄▂▂▂▃▂▁▁400.323388.66425.451368.405337.306321.557345.694304.622299.237293.334313.372286.925274.26283.37NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:CostsAndExpenses ▄▄▄▄▄▄▄▄▄▃▄▃▃▃▄▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▁▁▁▃▃█▁▃▃488.964465.795509.359439.581404.119391.497418.563369.526369.642362.264380.18350.279336.35350.308390.013343.236331.84311.787338.702300.27288.877294.657316.741293.57286.871299.393308.042284.577274.823277.864285.322271.034270.017265.385269.273258.907282.3520.2739040.2797750.277663269.007259.4891020.4049910.250926252.864252.219
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest ▇█▇▄▅▄▄▃▃▃▄▁▁▁▃▂▂▃▁▂▂▂▃▂▃63.72671.00358.24932.54744.58834.88436.33525.17520.95927.94232.6178.6376.958.03428.29217.64617.39125.5586.53511.83615.49416.43324.48513.6323.334NANANANANANANANANANANANANANANANANANANANANA
us-gaap:IncomeTaxExpenseBenefit ▃▃▃▂▃▃▂▂▂▂▃▂▂▂█▂▂▂▂▂▂▂▂▂▂▂▃▂▂▂▁▂▂▂▁▁▂▂▁▂▂▃▄▂▂▂11.35315.97911.2848.41511.03910.1995.675.1967.3457.46611.8351.8930.6532.10269.0162.0711.5975.3916.196-0.8132.9524.5286.5661.1927.8414.4058.9715.7785.4172.876-7.9956.3583.8542.391-2.969-3.611-1.2720.001853-3.797-0.0004960.1299.84928.4132890.0075865.0715.054
us-gaap:IncomeTaxesPaid █▃▅▆▄▃▄▄▅▃▄▄▅▃▄▃▃▃▃▃▄▄▃▃▃▃▃▃▃▃▃▃▄▃▃▃▄▃▃▁▃▄▅▂▃▃42.4484.27513.96823.1887.3573.24811.245.63116.9692.4769.8969.87516.074.1437.4565.4525.4550.452.9863.056.0467.6594.2543.1634.9582.8034.0053.0544.6522.8344.4283.4167.1621.7513.1754.6678.5441130.0018870.007626-14.858293.01511.8615.581084-5.9490844.7641.197
us-gaap:InterestExpense ▃▂▂▃▃█▅▄▄▅▅▇▇▆▅▄▃▃▃▂▂▂▂▃▂▂▂▂▂▂▂▂▂▂▂▃▂▁▁▁▂▂▃▁▂▂3.3811.8022.0382.7553.1049.5925.5764.0414.2085.2886.048.417.7656.4595.0353.4692.9122.3182.1852.0411.7531.9641.8272.3371.6761.6981.7491.6461.8611.691.9461.7991.9031.8651.8862.1291.5830.0010980.0013040.0011431.2911.383.1587880.0006960.6990.817
us-gaap:InterestPaidNet ▄▁▁▃▄▄▄▄▅▅▅█▇▆▅▄▃▂▂3.0611.5761.7972.5123.062.8643.2073.0573.4843.363.7795.0844.3924.2013.5893.2812.732.1272.0NANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:NetIncomeLoss ███▆▇▆▆▆▅▆▆▅▅▅▁▅▅▆▄▅▅▅▅▅▅▆▆▅▅▆▆▆▅▆▆▆▅▄▅▄▆▅█▄▅▅47.36950.41844.42321.36631.32521.53428.26318.10111.79819.00220.3335.3755.5184.591-41.45214.76914.69419.245-0.61411.45111.61611.22517.00311.19514.69618.77221.96613.24716.86220.21819.46917.64312.31517.96120.38228.4295.3230.01588116.1130.02537122.21710.47349.8286410.0186713.40213.287
us-gaap:NetIncomeLossAttributableToNoncontrollingInterest ██▅▆▅▆▅▅▅▄▃▄▃▄▃▃▄▄▄▄▄▃▄▄▃▄▄▄▄▄▁▄▃▃▂▄▄▃▁▃▄▄▇▃▄▃5.0044.6062.5422.7662.2243.1512.4021.8781.8161.4740.4491.3690.7791.3410.7280.8061.10.9220.9531.1980.9260.680.9161.2430.7971.2631.3291.4421.2681.085-1.5081.5260.4070.642-0.7561.2910.9250.000936-1.1320.0010641.0070.8983.6612050.0011180.9220.755
us-gaap:NonoperatingIncomeExpense ▆▅▅▁▅▅▄▆▆▅▄▅▄▂▄▆▅▆▆▆▆▆▆▆▆▆▇▆▇▆▅▆▅▆▆▆▆▆▆▆▆▆█▆▆▆-2.104-2.421-3.366-20.852-4.374-5.832-6.428-0.806-1.914-4.15-6.336-6.02-6.553-16.907-8.3181.846-4.198-0.9320.29-0.69-0.734-1.32-0.59-1.995-0.018-1.6882.138-0.8562.88-0.178-3.793-0.434-3.099-2.004-1.881-1.252-1.47-8e-050.279-0.000633-1.276-0.278.2165840.0072950.332-0.211
us-gaap:OperatingIncomeLoss ▇█▇▆▆▅▅▃▃▄▅▂▂▃▄▂▃▄▂▂▃▃▃▂▃▃▄▃▃▃▄▃▃▃▃▄▂▁▃▁▃▃█▁▃▃65.8373.42461.61553.39948.96240.71642.76325.98122.87332.09238.95314.65713.50324.94136.6115.821.58926.496.24512.52616.22817.75325.07515.62523.35226.12830.12821.32320.66724.35732.76525.96119.67522.99825.98827.3616.4460.0187520.7630.02657224.62921.4973.6865510.02007919.06319.307
us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax ▅▄▇▇▇▁▇▆▇▇▇█▄0.16-2.7144.3333.9353.784-7.8034.0450.9024.4523.0613.5335.448-1.506NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax ▅▄▇█▆▁▆▃▅▅▄▄▂▄▅▄▅▅▃▄▃▆▅▂▄▃▃▃▄▄▄▄▂▅▅▅▄▆2.263-5.75319.69228.67910.98-29.8149.574-9.1384.7491.631-2.243-2.255-20.285-5.599-0.129-1.1533.3396.228-12.986-8.541-9.4849.9561.142-21.997-6.062-11.283-11.747-16.66-7.01-1.723-8.151-1.708-19.6173.1342.0417.358-5.538.751NANANANANANANANA
us-gaap:OtherComprehensiveIncomeLossNetOfTax ▅▄▇█▆▁▆▄▆▅▅▅▃▄▅▅▆▆▃▄▃▆▅▂▄▃▃▂▅▄▃▄▁▅▅▆▄▆2.399-8.43124.13732.74414.883-37.4912.779-8.1999.1634.7471.2813.296-21.685-5.4981.6410.9077.94814.541-17.305-11.286-12.86115.611.504-28.272-8.645-14.03-18.705-27.6454.275-3.982-12.684-2.584-33.8635.4763.87612.01-3.54916.193NANANANANANANANA
us-gaap:OtherNonoperatingIncomeExpense ▆▅▅▁▅▇▅▆▆▆▅▆▆▃█▅▅▅▆▇▆▆▆▆▆▆▇▆▇▆▅▆▆▅▅▆▆▆▆▆▆▆█▆▆▆1.047-0.798-1.563-18.663-1.7613.396-1.4742.7131.8650.798-2.8320.9891.741-11.5168.442-4.416-1.197-0.962.0676.2540.7560.4781.0240.1461.294-0.3073.6630.2484.2491.001-2.2250.4271.884-0.808-0.7380.097-0.5820.0002580.000801-0.000386-0.7050.4449.2480030.007420.5450.032
us-gaap:ProfitLoss ██▇▆▆▆▆▅▅▅▅▄▄▄▁▅▅▅▄▅▅▅▅▅▅▅▆▅▅▆▆▅▅▅▆▆▄▄▄▄▆▅█▄▅▅52.37355.02446.96524.13233.54924.68530.66519.97913.61420.47620.7826.7446.2975.932-40.72415.57515.79420.1670.33912.64912.54211.90517.91912.43815.49320.03523.29514.68918.1321.30320.97719.16912.72218.60321.13829.726.2480.0168170.0172450.02643523.22411.37153.4898460.01978814.32414.042
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax ▅▄▅▄▄▄▄▄▄▄▄▃▃▃▄▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▁▃▁▃▃█▁▃▃554.794539.219570.974492.98453.081432.213461.326395.507392.515394.356419.133364.936349.853375.249426.623359.036353.429338.277344.947312.796305.105312.41341.816309.195310.223325.521338.17305.9295.49302.221318.087296.995289.692288.383295.261286.268288.7980.292654300.5380.304235293.636280.9791094.0915420.271005271.927271.526
us-gaap:Revenues ▅▄▅▄▄▄▄▄▄▄▄▃▃▃▄▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▁▃▁▃▃█▁▃▃554.794539.219570.974492.98453.081432.213461.326395.507392.515394.356419.133364.936349.853375.249426.623359.036353.429338.277344.947312.796305.105312.41341.816309.195310.223325.521338.17305.9295.49302.221318.087296.995289.692288.383295.261286.268288.7980.292654300.5380.304235293.636280.9791094.0915420.271005271.927271.526
us-gaap:SellingGeneralAndAdministrativeExpense ▄▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▁▃▁▃▃█▁▃▃61.352.75757.23549.47347.3649.83453.89448.06250.86449.7247.81743.32144.24547.04549.94245.16743.98543.2244.89540.62844.77445.548.57548.41847.37650.23750.53749.84747.80250.36751.34350.16546.16845.74744.94543.84545.7090.04813550.2730.04344547.28347.801165.6882790.04057239.74143.408
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:Assets █▆▆▆▇▇▆▅▅▅▅▅▄▅▅▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▁▁▁▄▃▃2037.6281495.6531516.4081477.021766.9891764.7681376.7881181.8661179.3411188.6421054.5081038.606988.531034.8621078.736949.518930.123840.151846.304807.287822.148865.893843.327858.215863.205864.483852.475861.309816.637831.94842.342838.369810.638847.495847.173805.604784.9520.7711150.7469780.783129783.785710.49660.623NANANA
us-gaap:Liabilities █▆▆▆▇▇▅▅▅▅▄▄▄▄▄▄▄▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▂▃▁▁▁▃▂▂1450.527960.7381005.67937.8051265.0361309.995896.135794.723788.692823.368701.659709.748656.866689.639715.891549.724534.865464.879484.409412.224397.949410.271398.379432.426404.224406.331386.411390.826324.855360.162366.351366.998336.938333.887346.836306.685316.290.2908870.2767310.328398330.537273.208205.805NANANA
us-gaap:LiabilitiesAndStockholdersEquity █▆▆▆▇▇▆▅▅▅▅▅▄▅▅▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▁▁▁▄▃▃2037.6281495.6531516.4081477.021766.9891764.7681376.7881181.8661179.3411188.6421054.5081038.606988.531034.8621078.736949.518930.123840.151846.304807.287822.148865.893843.327858.215863.205864.483852.475861.309816.637831.94842.342838.369810.638847.495847.173805.604784.9520.7711150.7469780.783129783.785710.49660.623NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:AssetsCurrent ▆▆▆▆██▅▅▅▅▅▅▅▅▅▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▅▅▅▅▁▁▁▅▅▄707.061663.858656.802632.374958.852958.108549.825515.61512.482522.651526.477502.972480.515517.664542.79468.208449.703423.941433.727397.462397.54441.325415.072450.389444.654455.463445.483439.496431.281449.361469.551467.009469.394500.28503.544510.382501.6950.4893260.4782820.524494517.663480.328424.216NANANA
us-gaap:CashAndCashEquivalentsAtCarryingValue ▃▃▃▃▇█▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▃▃▃▃▃▃▃▃▁▁▁▄▄▃▁▃▃174.742144.213132.914135.317482.255520.36982.40785.4875.51789.04678.23793.87971.2681.59474.43778.84277.9166.47555.26461.30855.3375.42260.30486.1793.84265.71477.31687.61297.778120.377158.017144.903150.623170.551164.485170.377170.5780.1727610.1563710.169809194.286189.707119.3850.159151131.484133.898
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents ▃▂▂▂▇█▂▁▁▁▁▁▁▁▁▁185.1160.236159.015156.831502.675542.005105.59195.79786.92991.43978.23793.87971.2681.59474.43778.842NANA55.264NANANA60.304NANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:AccountsReceivableNetCurrent ▇▇█▇▇▇▇▇▇▇▇▆▇▇█▇▆▆▆▆▆▆▆▆▆▆▆▆▆▆▅▅▅▅▆▅▅▁▁▁▅▅▅354.662350.307378.397338.263353.289313.639331.096312.128323.823332.867350.962301.77315.756344.249385.751304.493288.041272.827300.808256.039261.569286.165283.474258.231259.833295.719276.432266.846251.436249.351236.099245.08244.823245.836251.206244.175243.360.2442120.2436360.265598239.543224.665233.706NANANA
us-gaap:ReceivablesNetCurrent ▅██▁64.372.071.051.5NANA52.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:PrepaidExpenseAndOtherAssetsCurrent █▇▅▇▄▄▅▃▃▄▄▄▂▂▁▂▂▁▁131.566125.849104.597121.96487.9591.14996.28780.70975.28791.46888.48786.05470.95671.8463.66867.51667.0864.00259.905NANANA64.18NANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:AssetsNoncurrent █▅▆▅▅▅▅▅▅▅▄▄▄▄▄▄▄▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▂▁▁▁▂▂▂1330.567831.795859.606844.646808.137806.66826.963666.256666.859665.991528.031535.634508.015517.198535.946481.31480.42416.21412.577409.825424.608424.568428.255407.826418.551409.02406.992421.813385.356382.579372.791371.36341.244347.215343.629295.222283.2570.2817890.2686960.258635266.122230.162236.407NANANA
us-gaap:Goodwill █▄▄▄▄▄▄▃▃▃▃▃▃▃▃▃▃▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▂▂▂733.94362.862363.502345.119307.139305.531301.694203.823205.758205.18204.633201.826203.518205.632206.694166.584166.874129.765129.648111.088114.092114.506114.183118.784126.798127.588128.705128.83110.781110.553102.74398.69593.57795.19194.67972.15472.0570.0740690.0708440.0739977.27952.76752.707NANANA
us-gaap:FiniteLivedIntangibleAssetsNet NANA112.059NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:DeferredTaxAssetsLiabilitiesNet █▄▃▁13.59.17.3345.3NANA2.661NANANA5.152NANANA0.726NANANA53.426NANANA48.749NANANA49.338NANANA51.826NANANA46.228NANANA51.574NANANANANANANA
us-gaap:OperatingLeaseRightOfUseAsset ▁▂▃▅▇▇█▇▆▆106.735112.129120.82132.571142.701145.069150.808146.092137.26135.193NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherAssetsNoncurrent ▆▅▆▅▅▅▆▆▆▅▅▆▄▄▅▅▅▅▄▄▄▄▄▄▄▄▃▄▄▄▄█▇██▆▆▁▁▁▅▄▄74.04865.04869.43861.3962.48559.19368.96967.17570.55165.00265.44167.32743.48949.16861.85759.62859.49557.88347.5245.48545.52645.24942.48645.52447.02644.85236.65838.99844.22141.44744.084103.75791.43998.9899.38574.69972.1450.0747990.0621530.05646558.47542.337.446NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:AccountsPayableCurrent ▇▆▇▇█▇▇▇▆▇▇▆▅▅▅▅▄▄▅▅▅▅▅▅▅▄▅▄▄▅▄▄▃▃▃▃▄▁▁▁▃▃▃66.85849.34366.65865.53173.6463.89264.4466.22956.62559.87759.44751.56745.12139.47246.02945.15536.02234.23238.19737.09241.72439.24743.32346.35841.60831.78537.01934.15428.67540.69532.03135.71923.51220.21923.49425.05329.960.0207930.0275550.02140123.64319.40423.599NANANA
us-gaap:AccruedIncomeTaxesCurrent ▃█▅▅▆▄▃▃▃▅▃▄▃▅▂▃▃▃▂▃▂▂▃▂▂▃▃▂▂▁▂▂▂▃▃▃▃▁▁▁▃▃▅11.78136.50319.70920.0124.62717.40411.30710.18610.50719.13512.32513.50110.44418.3187.49710.1949.82210.0477.048.3086.0744.0969.1257.2475.7559.29810.1416.2242.8511.6486.0664.5044.05512.92712.6511.04112.2220.0086950.0100510.00841612.16810.07323.175NANANA
us-gaap:AccruedLiabilitiesCurrent ▄▆▅▆▄█▇▆▅▃▂▃▂▃▂▃▃▃▂▃▃▄▃▄▃▃▃▃▃▄▃▃▃▃▃▃▄▁▁▁▃▃▄44.31972.00455.91566.13137.892100.55979.17177.6162.7430.68815.96330.32417.82829.44218.99329.40523.91125.07814.8325.0822.21637.24633.1640.66230.47432.96934.4334.21228.44140.21631.65926.36527.18526.5829.05623.72343.9410.0297780.0338160.02775533.10333.83840.682NANANA
us-gaap:ContractWithCustomerLiabilityCurrent █▁▂▁▁▁▂▂▂▂▃▁82.75434.2239.95635.40833.8234.9839.44739.75539.71640.36944.92633.555NANA21.628NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LiabilitiesCurrent ████▇▇▇▇▇▆▅▅▄▅▄▅▄▄▄▄▄▄▅▅▄▄▄▄▄▄▄▄▄▄▄▄▄▁▁▁▄▄▄410.21402.946396.17404.112344.79380.398363.289358.306322.869304.902235.418242.97202.248224.927201.778219.978199.26202.713180.029197.762177.998195.997206.906224.041202.212190.628198.631188.898161.905188.22190.787178.998160.31157.725171.405161.568184.0010.1498240.1700110.157536173.694160.2172.251NANANA
us-gaap:OperatingLeaseLiabilityCurrent ▆▆▆▇███▅▂▁42.89143.04343.65144.18145.12145.31445.21841.51238.71937.66NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherLiabilitiesCurrent ▂▂▃▃▃▄▃▄▄▅▆▆▇▆▆▆▆▇██▇▆▆▇▆▅▅▅▃▄▄▃▃▃▃▃▃▁▁▁▂▄▂5.0226.0416.6238.30310.21412.929.54111.58412.57715.4319.3221.84124.16222.53522.31223.49723.08925.00629.15429.91124.7420.57523.4827.29620.8917.6117.08515.6669.64113.9411.51210.51910.4848.0987.3517.4048.530.0051610.0102820.0091816.16311.7014.584NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:LiabilitiesNoncurrent █▅▅▅▇▇▅▄▄▄▄▄▄▄▄▃▃▃▃▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▂▂▁1040.317557.792609.5533.693920.246929.597532.846436.417465.823518.466466.241466.778454.618464.712514.113329.746335.605262.166304.38214.462219.951214.274191.473208.385202.012215.703187.78201.928162.95171.942175.564188.0176.628176.162175.431145.117132.2890.1410630.106720.170862156.843113.00833.554NANANA
us-gaap:DeferredIncomeTaxLiabilitiesNet ▁▁▃▅▆█▇▆█6.0646.47.7479.30210.00810.93810.6029.91611.232NA10.371NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:MinorityInterest █▇▇▇▆▇▇▇▆▅▄▅▅▄▄▄▄▄▄▄▄▄▄▄▄▅▅▅▅▅▅▅▇▇▇▇▇▁▁▁▆▆▆15.39713.70913.0612.76211.90313.03613.18612.42212.0799.617.6778.2247.8117.4756.9787.0987.1446.7596.9817.2967.1027.0827.2017.6237.5857.8197.9838.1558.2288.0918.0818.8612.38413.49614.04514.02613.3890.0128530.011260.01091311.1411.05311.092NANANA
us-gaap:OtherLiabilitiesNoncurrent ▆▆▆▅▅▅▅▅▅███▆▆▆▄▄▄▅▅▅▅▅▅▅▅▅▅▄▄▄▄▄▄▄▃▃▁▁▁▂▂▂96.401100.15496.18570.19268.47273.4379.64174.22679.988121.301126.532130.336101.20897.12195.24358.56862.66864.2471.66470.45369.63466.01276.34981.01173.72777.24874.14975.29750.88260.79963.64857.89754.76750.06455.81345.22843.4590.0452290.0328950.02994927.51221.16319.556NANANA
us-gaap:OperatingLeaseLiabilityNoncurrent ▁▂▃▅▆▇██▇▆83.14689.96798.277106.921116.558120.021127.395125.998118.35114.35NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo us-gaap:StatementScenario ttec:OperatingLeasesNANA46.913NANANA47.892NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree us-gaap:StatementScenario ttec:OperatingLeasesNANA31.085NANANA43.59NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour us-gaap:StatementScenario ttec:OperatingLeasesNANA17.338NANANA28.124NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive us-gaap:StatementScenario ttec:OperatingLeasesNANA8.288NANANA14.494NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive us-gaap:StatementScenario ttec:OperatingLeasesNANA8.397NANANA14.734NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest █▇▇▇▇▆▇▆▆▆▆▅▅▆▆▆▆▆▆▆▇▇▇▇▇▇▇▇▇▇▇▇▇███▇▁▁▁▇▇▇532.301480.241457.762486.211447.927401.406431.73387.143390.649365.274352.849328.858331.664345.223362.845399.794395.258375.272361.895395.063424.199451.517440.817421.869455.571454.741463.25467.693488.508469.316473.482471.371473.7513.608500.337498.919468.6620.4802280.4702470.454731453.248437.282454.818NANANA
us-gaap:AdditionalPaidInCapital █████████████████████████████████████▁▁▁███358.423359.03360.293357.361355.968355.734356.409353.372354.068353.639353.932351.141352.784351.672351.725348.932351.006349.688348.739346.637347.704347.637347.251347.445356.047355.779356.792355.824352.92352.568356.381354.501347.737345.158350.714349.131346.0180.3428950.3503860.348519346.121343.068349.157NANANA
us-gaap:RetainedEarningsAccumulatedDeficit ██▇███▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▆▆▆▆▆▆▆▆▅▅▁▁▁▅▄▄834.967787.598757.312812.906810.234778.909773.218744.954741.728729.93725.551705.218712.775707.257721.664763.116759.809745.115735.939736.551734.441723.317720.989703.898701.714687.497677.859655.72641.852626.895606.502588.71571.067558.752540.791520.409491.980.4866570.4707760.454663429.292407.075396.602NANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▄▄▄▃▂▁▃▂▂▂▂▂▂▂▃▃▃▂▂▂▃▃▃▃▄▄▅▅▇▆▆▇▇███▇▇▇▇███-78.328-80.713-72.156-96.032-128.528-143.208-106.234-118.7-110.686-119.878-124.596-125.973-129.325-107.903-102.304-103.893-104.707-112.515-126.964-109.832-98.542-85.815-101.365-102.902-74.751-66.02-52.274-33.75-6.357-24.602-20.586-7.886-5.18628.54722.98119.1237.1970.010707-0.0054740.00088820.85423.9820.334NANANA
us-gaap:TreasuryStockValue ████████████████████▇▇▇▇▇▇▇▇▇▇▆▆▆▆▆▆▅▁▁▁▅▅▅598.627599.851601.214601.254602.117603.531605.314605.37607.004608.49610.177610.214612.841613.738615.677615.917618.452614.233603.262586.057566.98541.187533.744534.68535.507530.818527.595518.745508.627494.133477.399473.318452.815432.866428.716404.307390.4680.373440.3572670.360815354.725348.463322.946NANANA
us-gaap:MinorityInterest █▇▇▇▆▇▇▇▆▅▄▅▅▄▄▄▄▄▄▄▄▄▄▄▄▅▅▅▅▅▅▅▇▇▇▇▇▁▁▁▆▆▆15.39713.70913.0612.76211.90313.03613.18612.42212.0799.617.6778.2247.8117.4756.9787.0987.1446.7596.9817.2967.1027.0827.2017.6237.5857.8197.9838.1558.2288.0918.0818.8612.38413.49614.04514.02613.3890.0128530.011260.01091311.1411.05311.092NANANA
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue ▆█▅▆▅▄▅▅▆▅▄▅▃▇▆▆▄▁3.3714.0283.0363.4953.0572.9193.1513.1293.3663.1682.8533.1092.5743.6093.4943.5222.8082.028NANANANANANANANANANANANANANANANANANANA0.0033880.004293-7.7034373.9553.76NANANANA
us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders ▄▄▄▄▅▄▃▃▃▃▃▃▂▃▃▃▃▃▃▃▃▃█▁▁▁▁▁▁▁▁▁▁▁▁▁▁▂▂▄▁▁1.982.3851.7381.893.01.851.351.351.350.90.90.90.180.9450.90.9450.8550.9451.081.0350.810.96.885-0.9-1.035-0.99-1.125-1.125-1.035-0.99-0.763-1.035-1.276-1.109-0.765-0.72-0.71928-0.00072-0.0007651.856217-0.869-0.99NANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▆▆▆▆▅▆▅▆▅▆▄▆▅▆▂▄▅▆▄▅▅▄▄▅▆▄▅▅▄▄▆▅▅▄▅▄▅▃▄▂▄▄█▁▄▅63.05269.78785.13681.50643.11362.16553.59263.13141.30379.9632.23661.40337.31967.387-36.49124.18850.52374.9320.75154.1241.48811.53817.58630.65181.6933.8232.18330.27718.09313.53761.36636.40233.7176.49443.50914.75448.6423360.0146640.074297-47.94149823.37324.608134.335044-74.51504423.20351.432
us-gaap:NetCashProvidedByUsedInInvestingActivities ▁▇▇▇▇▇▆▇▇▇▇▇▇▇▇▇▆▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇█▇▇▇▇▇▇-493.475-11.807-25.877-50.23-14.279-22.041-118.768-15.982-14.916-13.185-11.596-14.97-10.913-10.083-42.733-15.979-96.079-14.196-61.187-11.09-12.932-15.148-17.325-19.68-18.024-22.14-15.92-32.922-19.96-23.12-18.742-25.476-11.207-4.105-43.424-15.556-21.940999-0.011001-0.02143753.852506-50.048-3.87-43.17700912.295009-5.708-6.608
us-gaap:NetCashProvidedByUsedInFinancingActivities █▄▄▁▄█▅▄▄▄▄▄▄▄▅▄▅▄▅▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▅▃▅▄▄454.641-54.183-63.336-381.661-70.893403.66472.229-34.891-31.605-53.107-6.297-21.295-28.358-46.12973.023-7.75656.119-49.80559.622-29.281-41.52413.511-25.436-6.046-30.6689.25-26.213.038-26.703-24.37-25.161-15.333-29.919-0.249-9.253-5.165-20.5511750.004175-0.065395-77.97371430.11747.938-85.84375940.230759-19.427-20.857
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect ▄▄▄▁▄█▄▄▄▄▄▄▄▄▄24.8641.2212.184-345.844-39.33436.4149.7948.868-4.5113.202-15.64222.619-10.3347.157-4.405NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:AmortizationOfFinancingCosts ▅▄▄▄▄▄▄▄▄▇▅▅▅▅▅▄▄▄▄▄▄▅▄▄▄▄▄▄▄▄▄▄▄▄▅▄▆▃▃▁▄▅█▃▂▄0.2720.1750.1830.1830.1830.1830.1740.1740.1790.5560.2480.250.2470.2470.2240.180.170.1710.1710.170.1770.2350.1780.1780.1780.1780.1780.1780.1790.170.1710.1690.1440.1750.2770.1840.3468470.0001530.000154-0.2895650.0620.2280.6715530.000447-0.1490.149
us-gaap:DeferredIncomeTaxExpenseBenefit ▂▄▃▂▄▆▄▅▄▃▃▃▄▄▇▅▇▄▁▄▄▆▆▆▅▄▃▇▆▄▅▅▄▆▄█▁▄▄▁▅▆▃▅▃▅-4.432-1.09-4.04-4.442-1.34.589-0.0221.37-0.366-2.358-2.699-2.949-1.355-0.9728.6222.2546.819-0.918-6.951-0.5290.8145.0834.9374.7211.138-1.479-3.5378.0164.0450.991.4252.77-1.2783.9750.2210.231-8.095778-0.001222-0.003924-8.0704182.7155.361-3.0327571.566757-3.1281.564
us-gaap:IncreaseDecreaseInAccountsReceivable ▂▂▆▂▆▃▄▃▃▂▆▃▂▁█▄▄▂▅▄▂▄▅▄▁▅▅▄▄▄▃▃▄▃▄▄▃▄▄▄▄▃▄▄▄▃-21.462-27.05335.175-20.55737.618-11.6117.097-9.017-9.108-18.5847.201-11.488-24.501-41.19772.74413.2091.941-28.6131.6380.165-23.616-0.32924.5894.469-34.01224.82116.82614.9411.1468.092-6.582-3.5137.816-5.0120.6910.004-1.091969-0.003031-0.0205435.9343325.719-11.6270.11146114.0195390.972-15.016
us-gaap:NetCashProvidedByUsedInOperatingActivities ▆▆▆▆▅▆▅▆▅▆▄▆▅▆▂▄▅▆▄▅▅▄▄▅▆▄▅▅▄▄▆▅▅▄▅▄▅▃▄▂▄▄█▁▄▅63.05269.78785.13681.50643.11362.16553.59263.13141.30379.9632.23661.40337.31967.387-36.49124.18850.52374.9320.75154.1241.48811.53817.58630.65181.6933.8232.18330.27718.09313.53761.36636.40233.7176.49443.50914.75448.6423360.0146640.074297-47.94149823.37324.608134.335044-74.51504423.20351.432
us-gaap:NetIncomeLoss ███▆▇▆▆▆▅▆▆▅▅▅▁▅▅▆▄▅▅▅▅▅▅▆▆▅▅▆▆▆▅▆▆▆▅▄▅▄▆▅█▄▅▅47.36950.41844.42321.36631.32521.53428.26318.10111.79819.00220.3335.3755.5184.591-41.45214.76914.69419.245-0.61411.45111.61611.22517.00311.19514.69618.77221.96613.24716.86220.21819.46917.64312.31517.96120.38228.4295.3230.01588116.1130.02537122.21710.47349.8286410.0186713.40213.287
us-gaap:ProfitLoss ██▇▆▆▆▆▅▅▅▅▄▄▄▁▅▅▅▄▅▅▅▅▅▅▅▆▅▅▆▆▅▅▅▆▆▄▄▄▄▆▅█▄▅▅52.37355.02446.96524.13233.54924.68530.66519.97913.61420.47620.7826.7446.2975.932-40.72415.57515.79420.1670.33912.64912.54211.90517.91912.43815.49320.03523.29514.68918.1321.30320.97719.16912.72218.60321.13829.726.2480.0168170.0172450.02643523.22411.37153.4898460.01978814.32414.042
us-gaap:ShareBasedCompensation ▄▅▄▅▄▄▄▄▄▄▄▄▄▅▅▅▄▄▄▄▄▄▄▄▄▄▄▄▄▄▅▄▅▄▄▅▅▃▃▅▅▅█▁▅▄3.34.0283.0363.53.12.93.1513.13.33.1682.8533.12.63.6093.4943.52.82.0412.4952.71.82.7592.7353.32.62.692.2763.22.73.163.3923.33.43.1913.0663.43.50.0033880.0042933.84.03.7613.362024-6.5850243.4073.188
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities ▁▇▇▇▇▇▆▇▇▇▇▇▇▇▇▇▆▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇█▇▇▇▇▇▇-493.475-11.807-25.877-50.23-14.279-22.041-118.768-15.982-14.916-13.185-11.596-14.97-10.913-10.083-42.733-15.979-96.079-14.196-61.187-11.09-12.932-15.148-17.325-19.68-18.024-22.14-15.92-32.922-19.96-23.12-18.742-25.476-11.207-4.105-43.424-15.556-21.940999-0.011001-0.02143753.852506-50.048-3.87-43.17700912.295009-5.708-6.608
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▅▅▅▆▆▆▆▆▆▆▅▆▅▅▅▆▆▅▅▅▅▆▆▇▆▆▆▆▇▆▇▆▅▄▅▆▆▃▃▁▅▄█▁▄▄12.02811.56511.94515.91215.10216.81316.33816.0115.22813.211.60914.9589.3757.5088.02614.34317.55412.03511.96911.1212.79414.94917.41119.67916.46713.03815.40717.75119.38815.09518.53218.1729.5554.1057.39415.78117.4715160.0064840.017501-12.3408348.4923.8726.782609-12.2986095.7086.608
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities █▄▄▁▄█▅▄▄▄▄▄▄▄▅▄▅▄▅▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▅▃▅▄▄454.641-54.183-63.336-381.661-70.893403.66472.229-34.891-31.605-53.107-6.297-21.295-28.358-46.12973.023-7.75656.119-49.80559.622-29.281-41.52413.511-25.436-6.046-30.6689.25-26.213.038-26.703-24.37-25.161-15.333-29.919-0.249-9.253-5.165-20.5511750.004175-0.065395-77.97371430.11747.938-85.84375940.230759-19.427-20.857
us-gaap:PaymentsOfDividendsCommonStock NANA118.7110.0NANA14.8750.0NANA12.9320.0NANA11.4620.0NANA9.34-0.001NANA8.7130.0NANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31

Common Stock Shares Outstanding

us-gaap:CommonStockSharesOutstanding

us-gaap:CommonStockSharesOutstanding


Common
Period End2020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value4646464646464646464645454545454646474848484848484849495050515252535455565656565762
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStockSharesOutstanding us-gaap:StatementEquityComponents

us-gaap:CommonStock


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-312007-12-31
Value464646464646464646464646464545454545464647480.048481480.0482320.0483660.0484530.0488060.0491860.049715505051525253540.0556780.0566350.056337560.05687457626369
Percentage of CommonStockSharesOutstanding0.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.1100.00.10.10.10.10.10.1100.0100.0100.0100.0100.0100.0100.00.10.10.1100.00.1100.0100.00.00.0

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


Weighted
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value474747474646464646464646464646464646464748484848494949495050515152535454550.057418570.0577480.0579740.0587970.0610280.0623170.063483
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


Weighted
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value464646464646464646464646464545454545464747484848484848494950505051525354550.056493560.0564760.0567130.057190.0598080.0611170.061877
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1.011.080.950.460.670.460.610.390.250.410.440.120.120.1-0.90.320.320.42-0.010.240.240.230.350.230.30.390.450.270.340.40.390.350.240.340.380.530.10.280.290.450.390.180.090.310.220.21
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1.01.060.940.450.670.460.60.390.250.410.440.120.120.1-0.890.320.320.42-0.010.240.240.230.350.230.30.380.440.270.340.40.380.340.230.340.380.520.10.280.280.440.380.180.080.310.220.21
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value5143695446-14.50540102023218.727-15.904-1.008-39.863152233-17.7460.161-1.1112618-16.746.1175.1993.639-14.00921166.76914-21.4182324401.7390.032062-38.5666345.405190.014164
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.28.112.111.010.3-3.48.82.65.36.05.22.4-4.5-0.3-9.34.36.410.0-5.10.1-0.48.65.5-5.42.01.61.1-4.67.25.42.15.0-7.48.28.214.10.611.0-12.81776.66.50.0

Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value3668000.03034000.02036000.02749000.01867000.01700000.02715000.01693000.01787000.01503000.0353000.01313000.0516000.01442000.0780000.0899000.01240000.01014000.0780000.01202000.0792000.0740000.0583000.0906000.0731000.0806000.0951000.01053000.01167000.0992000.01524000.01642000.0277000.0552000.0774000.01357000.0960000.0948.0-2600300.0697000.0956000.0951.0
Percentage of ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.70.60.40.60.40.40.60.40.50.40.10.40.10.40.20.30.40.30.20.40.30.20.20.30.20.20.30.30.40.30.50.60.10.20.30.50.30.3-0.9229.10.30.0

Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value5446715648-12.805431122252210-15.3880.434-39.083162334-16.9661.363-0.3192719-15.8346.8486.0054.59-12.95622178.29316-21.1412425412.6990.03301-41.1669186.102200.015115
Percentage of ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.98.612.511.510.7-3.09.43.05.86.45.32.8-4.40.1-9.24.66.710.3-4.90.4-0.18.85.7-5.12.21.81.4-4.27.65.72.65.6-7.38.38.514.60.911.3-13.72005.76.80.0

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
Value400388425368337321345304299293313286274283
Percentage of CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax72.272.174.574.774.474.474.977.076.274.474.878.678.475.5

Costs And Expenses

us-gaap:CostsAndExpenses

us-gaap:CostsAndExpenses


Costs
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value4884655094394043914183693693623803503363503903433313113383002882943162932862993082842742772852712702652692582820.2739040.2797750.27766326925910200.250926252252
Percentage of CostsAndExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax88.186.489.289.289.290.690.793.494.291.990.796.096.193.491.495.693.992.298.296.094.794.392.794.992.592.091.193.093.091.989.791.393.292.091.290.497.893.60.191.391.692.40.092.693.092.9

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

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value63715832443436252027328.6376.958.034281717256.535111516241323
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.513.210.26.69.88.17.96.45.37.17.82.42.02.16.64.94.97.61.93.85.15.37.24.47.5

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
Value1115118.41511105.675.1967.3457.466111.8930.6532.102692.0711.5975.3916.196-0.8132.9524.5286.5661.1927.8414.4058.9715.7785.4172.876-7.9956.3583.8542.391-2.969-3.611-1.2720.001853-3.797-0.0004960.1299.849280.0075865.0715.054
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 RevenueFromContractWithCustomerExcludingAssessedTax2.03.02.01.72.42.41.21.31.91.92.80.50.20.616.20.60.51.61.8-0.31.01.41.90.42.51.42.71.91.81.0-2.52.11.30.8-1.0-1.3-0.40.6-1.3-0.20.03.50.02.81.91.9

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

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLoss


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-09-30
Value0.4760.3720.4370.1910.0210.0410.106-0.294-0.273-0.682-0.877-1.104-1.318-1.43915-2.325-2.148-2.75919-3.028-2.5052.573102.091-1.4670.8260.007
Percentage of IncomeTaxExpenseBenefit4.22.33.92.30.20.41.9-5.7-3.7-9.1-7.4-58.3-201.8-68.522.6-112.3-134.5-51.2321.4372.4-84.956.8152.8175.4-18.718.80.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.10.10.00.00.00.0-0.1-0.1-0.2-0.2-0.3-0.4-0.43.7-0.6-0.6-0.85.8-1.0-0.80.82.90.7-0.50.30.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLoss0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Income Taxes Paid

us-gaap:IncomeTaxesPaid

us-gaap:IncomeTaxesPaid


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
Value424.27513237.3573.248115.631162.4769.8969.875164.1437.4565.4525.4550.452.9863.056.0467.6594.2543.1634.9582.8034.0053.0544.6522.8344.4283.4167.1621.7513.1754.6678.5441130.0018870.007626-14.858293.0151115-5.9490844.7641.197
Percentage of IncomeTaxesPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.70.82.44.71.60.82.41.44.30.62.42.74.61.11.71.51.50.10.91.02.02.51.21.01.60.91.21.01.60.91.41.22.50.61.11.63.00.60.0-4883.81.04.20.0-2195.21.80.4

Interest Expense

us-gaap:InterestExpense

us-gaap:InterestExpense


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value3.3811.8022.0382.7553.1049.5925.5764.0414.2085.2886.048.417.7656.4595.0353.4692.9122.3182.1852.0411.7531.9641.8272.3371.6761.6981.7491.6461.8611.691.9461.7991.9031.8651.8862.1291.5830.0010980.0013040.0011431.2911.383.1587880.0006960.6990.817
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.60.30.40.60.72.21.21.01.11.31.42.32.21.71.21.00.80.70.60.70.60.60.50.80.50.50.50.50.60.60.60.60.70.60.60.70.50.40.00.40.40.50.00.30.30.3

Interest Paid Net

us-gaap:InterestPaidNet

us-gaap:InterestPaidNet


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value3.0611.5761.7972.5123.062.8643.2073.0573.4843.363.7795.0844.3924.2013.5893.2812.732.1272.0
Percentage of InterestPaidNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.60.30.30.50.70.70.70.80.90.90.91.41.31.10.80.90.80.60.6

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value47504421312128181119205.3755.5184.591-41.452141419-0.61411111117111418211316201917121720285.3230.015881160.0253712210490.018671313
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.59.47.84.36.95.06.14.63.04.84.91.51.61.2-9.74.14.25.7-0.23.73.83.65.03.64.75.86.54.35.76.76.15.94.36.26.99.91.85.45.48.37.63.70.06.94.94.9

Net Income Loss Attributable To Noncontrolling Interest

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value5.0044.6062.5422.7662.2243.1512.4021.8781.8161.4740.4491.3690.7791.3410.7280.8061.10.9220.9531.1980.9260.680.9161.2430.7971.2631.3291.4421.2681.085-1.5081.5260.4070.642-0.7561.2910.9250.000936-1.1320.0010641.0070.8983.6612050.0011180.9220.755
Percentage of NetIncomeLossAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.90.90.40.60.50.70.50.50.50.40.10.40.20.40.20.20.30.30.30.40.30.20.30.40.30.40.40.50.40.4-0.50.50.10.2-0.30.50.30.3-0.40.30.30.30.00.40.30.3

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-2104000.0-2421000.0-3366000.0-20852000.0-4374000.0-5832000.0-6428000.0-806000.0-1914000.0-4150000.0-6336000.0-6020000.0-6553000.0-16907000.0-8318000.01846000.0-4198000.0-932000.0290000.0-690000.0-734000.0-1320000.0-590000.0-1995000.0-18000.0-1688000.02138000.0-856000.02880000.0-178000.0-3793000.0-434000.0-3099000.0-2004000.0-1881000.0-1252000.0-1470000.0-80.0279000.0-633.0-1276000.0-270000.08216600.07295.0332000.0-211000.0
Percentage of NonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.4-0.4-0.6-4.2-1.0-1.3-1.4-0.2-0.5-1.1-1.5-1.6-1.9-4.5-1.90.5-1.2-0.30.1-0.2-0.2-0.4-0.2-0.6-0.0-0.50.6-0.31.0-0.1-1.2-0.1-1.1-0.7-0.6-0.4-0.5-0.00.1-0.2-0.4-0.10.02.70.1-0.1

Operating Income Loss

us-gaap:OperatingIncomeLoss

us-gaap:OperatingIncomeLoss


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value6573615348404225223238141324361521266.24512161725152326302120243225192225276.4460.01875200.0265722421730.0200791919
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.913.610.810.810.89.49.36.65.88.19.34.03.96.68.64.46.17.81.84.05.35.77.35.17.58.08.97.07.08.110.38.76.88.08.89.62.26.46.98.78.47.60.07.47.07.1

us-gaap:OperatingIncomeLoss us-gaap:StatementBusinessSegments

ttec:TtecDigital


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value9.5654.2027.63813141011117.7097.759128.4696.764
Percentage of OperatingIncomeLoss14.55.712.424.429.425.227.545.033.724.232.057.850.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.70.81.32.63.22.42.53.02.02.03.02.31.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ttec:TtecDigital8.96.60.017.018.613.20.014.99.811.80.012.712.9

ttec:TtecEngage


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value56695340343031141524266.1886.739
Percentage of OperatingIncomeLoss85.594.387.675.670.674.872.555.066.375.868.042.249.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.112.89.58.27.67.06.73.63.96.26.31.71.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ttec:TtecEngage12.614.60.09.79.28.60.04.54.87.40.02.12.3

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

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0.16-2.7144.3333.9353.784-7.8034.0450.9024.4523.0613.5335.448-1.506
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-0.50.80.80.8-1.80.90.21.10.80.81.5-0.4

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0.16-2.7144.3333.9353.784-7.8034.0450.9024.4523.0613.5335.448-1.506
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-0.50.80.80.8-1.80.90.21.10.80.81.5-0.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.0

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

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value2.263-5.753192810-29.8149.574-9.1384.7491.631-2.243-2.255-20.285-5.599-0.129-1.1533.3396.228-12.986-8.541-9.4849.9561.142-21.997-6.062-11.283-11.747-16.66-7.01-1.723-8.151-1.708-19.6173.1342.0417.358-5.538.751
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.4-1.13.45.82.4-6.92.1-2.31.20.4-0.5-0.6-5.8-1.5-0.0-0.30.91.8-3.8-2.7-3.13.20.3-7.1-2.0-3.5-3.5-5.4-2.4-0.6-2.6-0.6-6.81.10.72.6-1.92990.2

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value2.249-5.879192810-29.2989.261-8.9534.7781.602-2.147-2.199-20.022-5.7-0.181-1.2463.1996.136-12.813-8.545-9.359.8961.175-21.872-6.148-10.999-11.565-16.4086.96-1.758-8.167-1.824-19.4873.224
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax99.4102.298.799.198.298.396.798.0100.698.295.797.598.7101.8140.3108.195.898.598.7100.098.699.4102.999.4101.497.598.598.5-99.3102.0100.2106.899.3102.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.4-1.13.45.82.4-6.82.0-2.31.20.4-0.5-0.6-5.7-1.5-0.0-0.30.91.8-3.7-2.7-3.13.20.3-7.1-2.0-3.4-3.4-5.42.4-0.6-2.6-0.6-6.71.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NoncontrollingInterest


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value0.0140.1260.2610.2480.203-0.5160.313-0.185-0.0290.029-0.096-0.056-0.2630.1010.0520.0930.140.092-0.1730.004-0.1340.06-0.033-0.1250.086-0.284-0.182-0.2520.050.0350.0160.116-0.13-0.09
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax0.6-2.21.30.91.81.73.32.0-0.61.84.32.51.3-1.8-40.3-8.14.21.51.3-0.01.40.6-2.90.6-1.42.51.51.5-0.7-2.0-0.2-6.80.7-2.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.10.0-0.10.1-0.0-0.00.0-0.0-0.0-0.10.00.00.00.00.0-0.10.0-0.00.0-0.0-0.00.0-0.1-0.1-0.10.00.00.00.0-0.0-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Other Comprehensive Income Loss Net Of Tax

us-gaap:OtherComprehensiveIncomeLossNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value2.399-8.431243214-37.4912-8.1999.1634.7471.2813.296-21.685-5.4981.6410.9077.94814-17.305-11.286-12.861151.504-28.272-8.645-14.03-18.705-27.6454.275-3.982-12.684-2.584-33.8635.4763.87612-3.54916
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.4-1.64.26.63.3-8.72.8-2.12.31.20.30.9-6.2-1.50.40.32.24.3-5.0-3.6-4.25.00.4-9.1-2.8-4.3-5.5-9.01.4-1.3-4.0-0.9-11.71.91.34.2-1.25533.2

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
Value1047000.0-798000.0-1563000.0-18663000.0-1761000.03396000.0-1474000.02713000.01865000.0798000.0-2832000.0989000.01741000.0-11516000.08442000.0-4416000.0-1197000.0-960000.02067000.06254000.0756000.0478000.01024000.0146000.01294000.0-307000.03663000.0248000.04249000.01001000.0-2225000.0427000.01884000.0-808000.0-738000.097000.0-582000.0258.0801.0-386.0-705000.0444000.09248000.07420.0545000.032000.0
Percentage of OtherNonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.2-0.1-0.3-3.8-0.40.8-0.30.70.50.2-0.70.30.5-3.12.0-1.2-0.3-0.30.62.00.20.20.30.00.4-0.11.10.11.40.3-0.70.10.7-0.3-0.20.0-0.20.10.0-0.1-0.20.20.02.70.20.0

us-gaap:OtherNonoperatingIncomeExpense us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation, us-gaap:IncomeStatementLocation

us-gaap:ForeignExchangeContract, us-gaap:FairValueHedging, us-gaap:Nondesignated, us-gaap:OtherNonoperatingIncomeExpense


Other
Period End2021-06-302021-03-312020-06-302020-03-312019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302015-09-30
Value375000.0-337000.0-14000.0-330000.0248000.0-956000.0-2343000.0-3352000.0-1186000.0416000.0-56000.0-3674000.0-5650000.0
Percentage of OtherNonoperatingIncomeExpense35.842.20.8-9.731.1-96.7-134.629.126.9-34.85.8-58.7-3869.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.1-0.1-0.0-0.10.1-0.3-0.7-0.9-0.30.1-0.0-1.2-1.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ForeignExchangeContract us-gaap:FairValueHedging us-gaap:Nondesignated us-gaap:OtherNonoperatingIncomeExpense0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OtherNonoperatingIncomeExpense us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome

us-gaap:ForeignExchangeContract, us-gaap:FairValueHedging, us-gaap:Nondesignated, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome


Other
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value305000.0-14000.0-330000.057000.0-1465000.0248000.0
Percentage of OtherNonoperatingIncomeExpense-1.60.8-9.72.1-78.631.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.1-0.0-0.10.0-0.40.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ForeignExchangeContract us-gaap:FairValueHedging us-gaap:Nondesignated us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome0.00.00.00.00.00.0

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value52554624332430191320206.7446.2975.932-40.7241515200.33912121117121520231418212019121821296.2480.0168170.0172450.0264352311530.0197881414
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.410.28.24.97.45.76.65.13.55.25.01.81.81.6-9.54.34.56.00.14.04.13.85.24.05.06.26.94.86.17.06.66.54.46.57.210.42.25.70.08.77.94.00.07.35.35.2

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

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value1.3541.0591.2450.5150.0580.110.291-0.793-0.738-1.845-2.371-2.981-3.565
Percentage of ProfitLoss2.61.92.72.10.20.40.9-4.0-5.4-9.0-11.4-44.2-56.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.20.20.10.00.00.1-0.2-0.2-0.5-0.6-0.8-1.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.00.00.00.00.0

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value5545395704924534324613953923944193643493754263593533383443123053123413093103253383052953023182962892882952862880.2926543000.30423529328010940.271005271271
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems

us-gaap:IntersegmentElimination


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value-0.022-0.022-0.0430.0-0.025-0.225-0.0430.043-0.061-0.188-0.056-0.17-0.1190.0-0.054-0.095-0.031-0.176-0.163-0.369-0.208-0.2-0.211-0.007
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.0-0.0-0.00.0-0.0-0.1-0.00.0-0.0-0.0-0.0-0.0-0.00.0-0.0-0.0-0.0-0.1-0.0-0.1-0.1-0.1-0.1-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.0-0.0-0.00.0-0.0-0.1-0.00.0-0.0-0.0-0.0-0.0-0.00.0-0.0-0.0-0.0-0.1-0.0-0.1-0.1-0.1-0.1-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:IntersegmentElimination100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value554539571492453432461395392394419365349375426359353338345313305312342309
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.1100.0100.1100.1100.1100.1100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.1100.0100.1100.1100.1100.1100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:IntersegmentElimination, ttec:TtecDigital


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-0.022-0.022-0.0430.0-0.025-0.225-0.0430.043-0.061-0.188-0.056-0.17-0.119
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.0-0.0-0.00.0-0.0-0.1-0.00.0-0.0-0.0-0.0-0.0-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.0-0.0-0.00.0-0.0-0.1-0.00.0-0.0-0.0-0.0-0.0-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:IntersegmentElimination ttec:TtecDigital100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, ttec:TtecDigital


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value108637576777782787866696652
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax19.511.813.315.517.018.017.919.920.016.716.618.315.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax19.511.813.315.517.018.017.919.920.016.716.618.315.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments ttec:TtecDigital100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, ttec:TtecEngage


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value446475495416375354378316313328349298297
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax80.588.286.784.583.082.182.180.180.083.383.481.785.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax80.588.286.784.583.082.182.180.180.083.383.481.785.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments ttec:TtecEngage100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation, us-gaap:IncomeStatementLocation, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome

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


Revenue
Period End2021-06-302021-03-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value1.831.4310.0790.1510.397-1.087-1.011-2.527-3.248-4.085-4.883-5.332-5.083-5.812-5.091-6.806-9.165-7.103
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.30.30.00.00.1-0.3-0.3-0.6-0.8-1.1-1.4-1.4-1.2-1.6-1.4-2.0-2.7-2.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.30.30.00.00.1-0.3-0.3-0.6-0.8-1.1-1.4-1.4-1.2-1.6-1.4-2.0-2.7-2.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ForeignExchangeContract us-gaap:CashFlowHedging us-gaap:DesignatedAsHedgingInstrument us-gaap:Sales us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome

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


Revenue
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value0.7060.0790.151-1.087-1.011-2.527
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.00.0-0.3-0.3-0.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.00.0-0.3-0.3-0.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ForeignExchangeContract us-gaap:CashFlowHedging us-gaap:DesignatedAsHedgingInstrument us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:DerivativeInstrumentRisk, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ForeignExchangeForward, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedTranslationAdjustment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-09-30
Value1.831.4311.6820.7060.0790.1510.397-1.087-1.011-6.806-9.165-7.103-5.86-5.897-4.21-3.987-2.506-1.7080.248
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.30.30.30.10.00.00.1-0.3-0.3-2.0-2.7-2.3-1.9-1.9-1.2-1.3-0.8-0.50.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.30.30.30.10.00.00.1-0.3-0.3-2.0-2.7-2.3-1.9-1.9-1.2-1.3-0.8-0.50.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ForeignExchangeForward us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedTranslationAdjustment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Range, us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType

srt:Minimum, us-gaap:Sales, us-gaap:CustomerConcentrationRisk


Revenue
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-30
Value0.01000.00.01000.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.018.50.00.023.10.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.018.50.00.023.10.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:Minimum us-gaap:Sales us-gaap:CustomerConcentrationRisk0.0100.00.00.0100.00.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RelatedPartyTransactionsByRelatedParty

ttec:Weltok


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0.40.50.60.60.90.91.31.21.41.42.31.41.20.82.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.10.10.10.20.20.30.30.40.40.50.40.30.20.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.10.10.10.20.20.30.30.40.40.50.40.30.20.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ttec:Weltok100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementBusinessSegments

ttec:TtecDigital


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value107637576777782787865696652
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax19.511.813.315.517.017.917.919.920.016.716.618.315.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax19.511.813.315.517.017.917.919.920.016.716.618.315.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ttec:TtecDigital100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ttec:TtecEngage


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value446475495416375354378316313328349298297
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax80.588.286.784.583.082.182.180.180.083.383.481.785.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax80.588.286.784.583.082.182.180.180.083.383.481.785.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ttec:TtecEngage100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical

country:CA


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value8.0737.1187.3265.9337.0646.222121010111315151618181818100.8910.8921.2371.351.542
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.51.31.31.21.61.42.72.62.72.83.24.24.54.34.35.35.25.53.20.30.30.40.40.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.51.31.31.21.61.42.72.62.72.83.24.24.54.34.35.35.25.53.20.30.30.40.40.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:CA100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

country:PH


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value10210295827991958991939185858994868585919084848784
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax18.519.016.616.717.521.120.822.723.323.621.923.424.423.822.224.224.325.326.729.027.827.025.727.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax18.519.016.616.717.521.120.822.723.323.621.923.424.423.822.224.224.325.326.729.027.827.025.727.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:PH100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

country:US


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value372358402346312277288240235236257206188209250197194178185166166174191159
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax67.266.570.470.268.964.262.660.960.160.161.356.653.955.958.755.154.952.753.753.454.555.955.951.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax67.266.570.470.268.964.262.660.960.160.161.356.653.955.958.755.154.952.753.753.454.555.955.951.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:US100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:AsiaPacific


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value1616161413151314141215151413129.244
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.03.02.92.93.03.53.03.73.63.33.64.24.03.62.92.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.03.02.92.93.03.53.03.73.63.33.64.24.03.62.92.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:AsiaPacific100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:LatinAmerica


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value27292623232526242524252627303331
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.95.54.74.85.25.85.76.26.46.16.07.27.88.17.98.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.95.54.74.85.25.85.76.26.46.16.07.27.88.17.98.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:LatinAmerica100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EMEA


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value2725232017162315151616161815171415151615
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.04.84.14.23.83.95.23.84.04.14.04.45.34.34.04.14.34.64.95.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.04.84.14.23.83.95.23.84.04.14.04.45.34.34.04.14.34.64.95.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:EMEA100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Revenues

us-gaap:Revenues

us-gaap:Revenues


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value5545395704924534324613953923944193643493754263593533383443123053123413093103253383052953023182962892882952862880.2926543000.30423529328010940.271005271271
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Selling General And Administrative Expense

us-gaap:SellingGeneralAndAdministrativeExpense

us-gaap:SellingGeneralAndAdministrativeExpense


Selling
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value615257494749534850494743444749454343444044454848475050494750515046454443450.048135500.04344547471650.0405723943
Percentage of SellingGeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.09.810.010.010.511.511.712.213.012.611.411.912.612.511.712.612.412.813.013.014.714.614.215.715.315.414.916.316.216.716.116.915.915.915.215.315.816.416.714.316.117.015.115.014.616.0

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
Value203714951516147717661764137611811179118810541038988103410789499308408468078228658438588638648528618168318428388108478478057840.7711150.7469780.783129783710660640
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Assets us-gaap:StatementBusinessSegments

ttec:TtecDigital


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312017-12-31
Value850268277283287313238248249222168
Percentage of Assets41.717.918.319.216.317.817.321.021.121.115.6
Percentage of Assets41.717.918.319.216.317.817.321.021.121.115.6
Percentage of Assets ttec:TtecDigital100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ttec:TtecEngage


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312017-12-31
Value1187122712391193147914511138933930831910
Percentage of Assets58.382.181.780.883.782.282.779.078.978.984.4
Percentage of Assets58.382.181.780.883.782.282.779.078.978.984.4
Percentage of Assets ttec:TtecEngage100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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
Value14509601005937126513098967947888237017096566897155495344644844123974103984324044063863903243603663663363333463063160.2908870.2767310.328398330273205184
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 Assets71.264.266.363.571.674.265.167.266.969.366.568.366.466.666.457.957.555.357.251.148.447.447.250.446.847.045.345.439.843.343.543.841.639.440.938.140.337.737.041.942.238.531.228.8

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
Value203714951516147717661764137611811179118810541038988103410789499308408468078228658438588638648528618168318428388108478478057840.7711150.7469780.783129783710660640
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

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
Value7076636566329589585495155125225265024805175424684494234333973974414154504444554454394314494694674695005035105010.4893260.4782820.524494517480424402
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 Assets34.744.443.342.854.354.339.943.643.544.049.948.448.650.050.349.348.350.551.249.248.451.049.252.551.552.752.351.052.854.055.755.757.959.059.463.463.963.564.067.066.067.664.262.9

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashAndCashEquivalentsAtCarryingValue


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value17414413213548252082857589789371817478776655615575608693657787971201581441501701641701700.1727610.1563710.1698091941891190.1591511311331090.087942
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets8.69.68.89.227.329.56.07.26.47.57.49.07.27.96.98.38.47.96.57.66.78.77.210.010.97.69.110.212.014.518.817.318.620.119.421.121.722.420.921.724.826.718.10.00.00.017.10.0

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-312015-12-31
Value1851601591565025421059586917893718174785560
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets9.110.710.510.628.430.77.78.17.47.77.49.07.27.96.98.36.57.2

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents us-gaap:BalanceSheetLocation

us-gaap:OtherNoncurrentAssets


Cash
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.0040.0040.0040.0120.0120.0120.013
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents0.00.00.00.00.00.00.0
Percentage of Assets0.00.00.00.00.00.00.0
Percentage of Assets us-gaap:OtherNoncurrentAssets0.00.00.00.00.00.00.0

us-gaap:PrepaidExpensesAndOtherCurrentAssets


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1016262120212310112.38
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents5.610.016.413.74.14.021.910.813.12.6
Percentage of Assets0.51.11.71.51.21.21.70.91.00.2
Percentage of Assets us-gaap:PrepaidExpensesAndOtherCurrentAssets0.00.00.00.00.00.00.00.00.00.0

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
Value3543503783383533133313123233323503013153443853042882723002562612862832582592952762662512492362452442452512442430.2442120.2436360.265598239224233216
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 Assets17.423.425.022.920.017.824.026.427.528.033.329.131.933.335.832.131.032.535.531.731.833.033.630.130.134.232.431.030.830.028.029.230.229.029.730.331.031.732.633.930.631.635.433.8

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

ttec:FinancialServicesClient, us-gaap:AccountsReceivable, us-gaap:CreditConcentrationRisk


Accounts
Period End2020-12-312019-12-312018-12-31
Value584.3219.812
Percentage of AccountsReceivableNetCurrent15.61.32.8
Percentage of Assets3.90.30.9
Percentage of Assets ttec:FinancialServicesClient us-gaap:AccountsReceivable us-gaap:CreditConcentrationRisk0.00.00.0

ttec:HealthcareClient, us-gaap:AccountsReceivable, us-gaap:CreditConcentrationRisk


Accounts
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value1718495622
Percentage of AccountsReceivableNetCurrent4.65.614.014.77.5
Percentage of Assets1.21.34.75.32.6
Percentage of Assets ttec:HealthcareClient us-gaap:AccountsReceivable us-gaap:CreditConcentrationRisk0.00.00.00.00.0

Receivables Net Current

us-gaap:ReceivablesNetCurrent

us-gaap:ReceivablesNetCurrent


Receivables
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value6472715152
Percentage of ReceivablesNetCurrent100.0100.0100.0100.0100.0
Percentage of Assets3.24.84.73.53.8

Prepaid Expense And Other Assets Current

us-gaap:PrepaidExpenseAndOtherAssetsCurrent

us-gaap:PrepaidExpenseAndOtherAssetsCurrent


Prepaid
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value13112510412187919680759188867071636767645964
Percentage of PrepaidExpenseAndOtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.58.46.98.35.05.27.06.86.47.78.48.37.26.95.97.17.27.67.17.6

Assets Noncurrent

us-gaap:AssetsNoncurrent

us-gaap:AssetsNoncurrent


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
Value13308318598448088068266666666655285355085175354814804164124094244244284074184094064213853823723713413473432952830.2817890.2686960.258635266230236237
Percentage of AssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets65.355.656.757.245.745.760.156.456.556.050.151.651.450.049.750.751.749.548.850.851.649.050.847.548.547.347.749.047.246.044.344.342.141.040.636.636.136.536.033.034.032.435.837.1

Goodwill

us-gaap:Goodwill

us-gaap:Goodwill


Goodwill
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value7333623633453073053012032052052042012032052061661661291291111141141141181261271281281101101029893959472720.0740690.0708440.0739977525245
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets36.024.324.023.417.417.321.917.217.417.319.419.420.619.919.217.517.915.415.313.813.913.213.513.814.714.815.115.013.613.312.211.811.511.211.29.09.29.69.59.49.97.48.07.1

us-gaap:Goodwill us-gaap:BusinessAcquisition

ttec:Avtex


Goodwillus-gaap:
Period End2021-04-08
Value370
Percentage of Goodwill0.0
Percentage of Assets0.0
Percentage of Assets ttec:Avtex0.0

ttec:VoiceFoundryAsean


Goodwillus-gaap:
Period End2020-11-04
Value14
Percentage of Goodwill0.0
Percentage of Assets0.0
Percentage of Assets ttec:VoiceFoundryAsean0.0

ttec:Voicefoundry


Goodwillus-gaap:
Period End2020-08-05
Value35
Percentage of Goodwill0.0
Percentage of Assets0.0
Percentage of Assets ttec:Voicefoundry0.0

us-gaap:Goodwill us-gaap:StatementBusinessSegments

ttec:TtecDigital


Goodwillus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312017-12-31
Value49812712811174736665666665
Percentage of Goodwill68.035.235.332.324.424.222.032.232.232.331.8
Percentage of Assets24.58.58.57.54.24.24.85.55.66.36.1
Percentage of Assets ttec:TtecDigital58.747.646.239.226.023.627.826.426.529.739.1

ttec:TtecEngage


Goodwillus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312017-12-31
Value235235235233232231235138139138143
Percentage of Goodwill32.064.864.767.775.675.878.067.867.867.769.6
Percentage of Assets11.515.715.515.813.113.117.111.711.813.113.3
Percentage of Assets ttec:TtecEngage19.819.219.019.615.716.020.714.815.016.715.8

Finite Lived Intangible Assets Net

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:FiniteLivedIntangibleAssetsNet


Finite
Period End2020-12-31
Value112
Percentage of FiniteLivedIntangibleAssetsNet100.0
Percentage of Assets7.4

Deferred Tax Assets Liabilities Net

us-gaap:DeferredTaxAssetsLiabilitiesNet

us-gaap:DeferredTaxAssetsLiabilitiesNet


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value139.17.3345.32.6615.1520.726534849514651
Percentage of DeferredTaxAssetsLiabilitiesNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.70.60.50.40.20.50.16.35.85.86.25.56904.4

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312019-01-01
Value106112120132142145150146137135129
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.27.58.09.08.18.211.012.411.611.40.0

us-gaap:OperatingLeaseRightOfUseAsset us-gaap:BusinessAcquisition

ttec:Avtex


Operating
Period End2021-04-08
Value3.21
Percentage of OperatingLeaseRightOfUseAsset0.0
Percentage of Assets0.0
Percentage of Assets ttec:Avtex0.0

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
Value7465696162596867706565674349615959574745454542454744363844414410391989974720.0747990.0621530.05646558423720
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 Assets3.64.34.64.23.53.45.05.76.05.56.26.54.44.85.76.36.46.95.65.65.55.25.05.35.45.24.34.55.45.05.212.411.311.711.79.39.29.78.37.27.56.05.73.3

us-gaap:OtherAssetsNoncurrent us-gaap:StatementGeographical

country:CA


Other
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value0.1680.2520.2410.3240.5141.1220.271
Percentage of OtherAssetsNoncurrent0.20.40.40.51.12.60.7
Percentage of Assets0.00.00.00.00.10.10.0
Percentage of Assets country:CA0.00.00.00.00.00.00.0

country:PH


Other
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value8.7567.8925.1887.7538.1945.225.202
Percentage of OtherAssetsNoncurrent12.611.47.912.517.212.314.2
Percentage of Assets0.60.60.50.71.00.60.6
Percentage of Assets country:PH0.00.00.00.00.00.00.0

country:US


Other
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value55575646363427
Percentage of OtherAssetsNoncurrent80.083.386.374.476.780.075.6
Percentage of Assets3.74.25.44.34.34.03.3
Percentage of Assets country:US0.00.00.00.00.00.00.0

srt:AsiaPacific


Other
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value1.7261.4221.684.3260.11
Percentage of OtherAssetsNoncurrent2.52.12.67.00.2
Percentage of Assets0.10.10.20.40.0
Percentage of Assets srt:AsiaPacific0.00.00.00.00.0

srt:LatinAmerica


Other
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value0.9120.9931.3291.4751.161
Percentage of OtherAssetsNoncurrent1.31.42.02.42.4
Percentage of Assets0.10.10.10.10.1
Percentage of Assets srt:LatinAmerica0.00.00.00.00.0

us-gaap:EMEA


Other
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value2.3280.9930.5441.951.0990.811
Percentage of OtherAssetsNoncurrent3.41.40.83.22.31.9
Percentage of Assets0.20.10.10.20.10.1
Percentage of Assets us-gaap:EMEA0.00.00.00.00.00.0

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
Value664966657363646656595951453946453634383741394346413137342840323523202325290.0207930.0275550.02140123192317
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 Assets3.33.34.44.44.23.64.75.64.85.05.65.04.63.84.34.83.94.14.54.65.14.55.15.44.83.74.34.03.54.93.84.32.92.42.83.13.82.73.72.73.02.73.62.8

Accrued Income Taxes Current

us-gaap:AccruedIncomeTaxesCurrent

us-gaap:AccruedIncomeTaxesCurrent


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value11361920241711101019121310187.497109.822107.048.3086.0744.0969.1257.2475.7559.298106.2242.8511.6486.0664.5044.055121211120.0086950.0100510.00841612102320
Percentage of AccruedIncomeTaxesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.62.41.31.41.41.00.80.90.91.61.21.31.11.80.71.11.11.20.81.00.70.51.10.80.71.11.20.70.30.20.70.50.51.51.51.41.61.11.31.11.61.43.53.2

Accrued Liabilities Current

us-gaap:AccruedLiabilitiesCurrent

us-gaap:AccruedLiabilitiesCurrent


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value4472556637100797762301530172918292325142522373340303234342840312627262923430.0297780.0338160.02775533334018
Percentage of AccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.24.83.74.52.15.75.86.65.32.61.52.91.82.81.83.12.63.01.83.12.74.33.94.73.53.84.04.03.54.83.83.13.43.13.42.95.63.94.53.54.24.86.22.9

Contract With Customer Liability Current

us-gaap:ContractWithCustomerLiabilityCurrent

us-gaap:ContractWithCustomerLiabilityCurrent


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-01-012017-12-31
Value8234393533343939394044334621
Percentage of ContractWithCustomerLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.12.32.62.41.92.02.93.43.43.44.33.20.02.0

Liabilities Current

us-gaap:LiabilitiesCurrent

us-gaap:LiabilitiesCurrent


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value4104023964043443803633583223042352422022242012191992021801971771952062242021901981881611881901781601571711611840.1498240.1700110.157536173160172145
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 Assets20.126.926.127.419.521.626.430.327.425.722.323.420.521.718.723.221.424.121.324.521.722.624.526.123.422.123.321.919.822.622.621.419.818.620.220.123.419.422.820.122.222.526.122.8

Operating Lease Liability Current

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OperatingLeaseLiabilityCurrent


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312019-01-01
Value4243434445454541383735
Percentage of OperatingLeaseLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.12.92.93.02.62.63.33.53.33.20.0

us-gaap:OperatingLeaseLiabilityCurrent us-gaap:BusinessAcquisition

ttec:Avtex


Operating
Period End2021-04-08
Value0.543
Percentage of OperatingLeaseLiabilityCurrent0.0
Percentage of Assets0.0
Percentage of Assets ttec:Avtex0.0

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
Value5.0226.0416.6238.30310129.5411112151921242222232325292924202327201717159.641131110108.0987.3517.4048.530.0051610.0102820.0091816.163114.5846.118
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 Assets0.20.40.40.60.60.70.71.01.11.31.82.12.42.22.12.52.53.03.43.73.02.42.83.22.42.02.01.81.21.71.41.31.31.00.90.91.10.71.41.20.81.60.71.0

Liabilities Noncurrent

us-gaap:LiabilitiesNoncurrent

us-gaap:LiabilitiesNoncurrent


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
Value10405576095339209295324364655184664664544645143293352623042142192141912082022151872011621711751881761761751451320.1410630.106720.1708621561133338
Percentage of LiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets51.137.340.236.152.152.738.736.939.543.644.244.946.044.947.734.736.131.236.026.626.824.722.724.323.425.022.023.420.020.720.822.421.820.820.718.016.918.314.321.820.015.95.16.0

Deferred Income Tax Liabilities Net

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:DeferredIncomeTaxLiabilitiesNet


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value6.0646.47.7479.3021010109.9161110
Percentage of DeferredIncomeTaxLiabilitiesNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.30.40.50.60.60.60.80.81.01.0

Minority Interest

us-gaap:MinorityInterest

us-gaap:MinorityInterest


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value1513131211131312129.617.6778.2247.8117.4756.9787.0987.1446.7596.9817.2967.1027.0827.2017.6237.5857.8197.9838.1558.2288.0918.0818.8612131414130.0128530.011260.0109131111115.478
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.80.90.90.90.70.71.01.11.00.80.70.80.80.70.60.70.80.80.80.90.90.80.90.90.90.90.90.91.01.01.01.11.51.61.71.71.71.71.51.41.41.61.70.9

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
Value96100967068737974791211261301019795586264717069667681737774755060635754505545430.0452290.0328950.02994927211919
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 Assets4.76.76.34.83.94.25.86.36.810.212.012.510.29.48.86.26.77.68.58.78.57.69.19.48.58.98.78.76.27.37.66.96.85.96.65.65.55.94.43.83.53.03.03.0

Operating Lease Liability Noncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312019-01-01
Value838998106116120127125118114112
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.16.06.57.26.66.89.310.710.09.60.0

us-gaap:OperatingLeaseLiabilityNoncurrent us-gaap:BusinessAcquisition

ttec:Avtex


Operating
Period End2021-04-08
Value2.667
Percentage of OperatingLeaseLiabilityNoncurrent0.0
Percentage of Assets0.0
Percentage of Assets ttec:Avtex0.0

Lessee Operating Lease Liability Payments Due Year Two

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo us-gaap:StatementScenario

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

ttec:OperatingLeases


Lessee
Period End2020-12-312019-12-31
Value4647
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo100.0100.0
Percentage of Assets3.13.5
Percentage of Assets ttec:OperatingLeases0.00.0

Lessee Operating Lease Liability Payments Due Year Three

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree us-gaap:StatementScenario

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

ttec:OperatingLeases


Lessee
Period End2020-12-312019-12-31
Value3143
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree100.0100.0
Percentage of Assets2.03.2
Percentage of Assets ttec:OperatingLeases0.00.0

Lessee Operating Lease Liability Payments Due Year Four

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour us-gaap:StatementScenario

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

ttec:OperatingLeases


Lessee
Period End2020-12-312019-12-31
Value1728
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour100.0100.0
Percentage of Assets1.12.0
Percentage of Assets ttec:OperatingLeases0.00.0

Lessee Operating Lease Liability Payments Due Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive us-gaap:StatementScenario

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

ttec:OperatingLeases


Lessee
Period End2020-12-312019-12-31
Value8.28814
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive100.0100.0
Percentage of Assets0.51.1
Percentage of Assets ttec:OperatingLeases0.00.0

Lessee Operating Lease Liability Payments Due After Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive us-gaap:StatementScenario

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

ttec:OperatingLeases


Lessee
Period End2020-12-312019-12-31
Value8.39714
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive100.0100.0
Percentage of Assets0.61.1
Percentage of Assets ttec:OperatingLeases0.00.0

Operating Lease Liability

us-gaap:OperatingLeaseLiability us-gaap:StatementScenario

us-gaap:OperatingLeaseLiability

ttec:OperatingLeases


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value126133141151161165172
Percentage of OperatingLeaseLiability100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.28.99.410.29.19.412.5
Percentage of Assets ttec:OperatingLeases0.00.00.00.00.00.00.0

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue us-gaap:StatementScenario

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

ttec:OperatingLeases


Lessee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value142151163174188203
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue100.0100.0100.0100.0100.0100.0
Percentage of Assets7.010.210.811.810.614.8
Percentage of Assets ttec:OperatingLeases0.00.00.00.00.00.0

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount us-gaap:StatementScenario

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

ttec:OperatingLeases


Lessee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value16182123262831
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.81.31.41.61.51.62.3
Percentage of Assets ttec:OperatingLeases0.00.00.00.00.00.00.0

Stockholders Equity Including Portion Attributable To Noncontrolling Interest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-312007-12-31
Value5324804574864474014313873903653523283313453623993953753613954244514404214554544634674884694734714735135004984680.4802280.4702470.454731453437454455360454
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets26.132.130.232.925.322.731.432.833.130.733.531.733.633.433.642.142.544.742.848.951.652.152.349.252.852.654.354.359.856.456.256.258.460.659.161.959.762.363.058.157.861.568.871.20.00.0

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value-2.436-2.412-2.448-2.56-2.69-2.809-2.936-2.096-2.133-2.095-2.15-2.141-2.244-2.35-2.458-2.177-2.304-2.434-2.563-2.082-2.884-3.109-3.284-2.717-2.938-3.172-0.577-1.653
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-0.5-0.5-0.5-0.5-0.6-0.7-0.7-0.5-0.5-0.6-0.6-0.7-0.7-0.7-0.7-0.5-0.6-0.6-0.7-0.5-0.7-0.7-0.7-0.6-0.6-0.7-0.1-0.3
Percentage of Assets-0.1-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.3-0.3-0.3-0.4-0.4-0.4-0.3-0.3-0.4-0.1-0.2
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312016-12-31
Value5.8775.7178.4314.0980.163-3.6214.1820.137-0.765-5.217-8.278-11.811-17.259-15.746-32.393
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest1.11.21.80.80.0-0.91.00.0-0.2-1.4-2.3-3.6-5.2-4.3-9.0
Percentage of Assets0.30.40.60.30.0-0.20.30.0-0.1-0.4-0.8-1.1-1.7-1.5-3.8
Percentage of Assets us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-312007-12-31
Value-78.328-80.713-72.156-96.032-128.528-143.208-106.234-118.7-110.686-119.878-124.596-125.973-129.325-107.903-102.304-103.893-104.707-112.515-126.964-109.832-98.542-85.815-101.365-102.902-74.751-66.02-52.274-33.75-6.357-24.602-20.586-7.886-5.1862822197.1970.010707-0.0054740.00088820232010-33.0257
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-14.7-16.8-15.8-19.8-28.7-35.7-24.6-30.7-28.3-32.8-35.3-38.3-39.0-31.3-28.2-26.0-26.5-30.0-35.1-27.8-23.2-19.0-23.0-24.4-16.4-14.5-11.3-7.2-1.3-5.2-4.3-1.7-1.15.64.63.81.52.2-1.20.24.65.54.52.3-9.112.7
Percentage of Assets-3.8-5.4-4.8-6.5-7.3-8.1-7.7-10.0-9.4-10.1-11.8-12.1-13.1-10.4-9.5-10.9-11.3-13.4-15.0-13.6-12.0-9.9-12.0-12.0-8.7-7.6-6.1-3.9-0.8-3.0-2.4-0.9-0.63.42.72.40.91.4-0.70.12.73.43.11.60.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedTranslationAdjustment


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value-81.769-84.018-78.139-97.57-126.001-136.778-107.48-116.741-107.788-112.566-114.168-112.021-109.822-89.8-84.1-83.919-82.673-85.872-92.008-79.195-70.65-61.3-71.196-72.371-50.499-44.351-33.352-10.581
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-15.4-17.5-17.1-20.1-28.1-34.1-24.9-30.2-27.6-30.8-32.4-34.1-33.1-26.0-23.2-21.0-20.9-22.9-25.4-20.0-16.7-13.6-16.2-17.2-11.1-9.8-7.2-2.2
Percentage of Assets-4.0-5.6-5.2-6.6-7.1-7.8-7.8-9.9-9.1-9.5-10.8-10.8-11.1-8.7-7.8-8.8-8.9-10.2-10.9-9.8-8.6-7.1-8.4-8.4-5.9-5.1-3.9-1.3
Percentage of Assets us-gaap:AccumulatedTranslationAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-312007-12-31
Value3583593603573553553563533543533533513523513513483513493483463473473473473563553563553523523563543473453503493460.3428950.3503860.348519346343349344341334
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest67.374.878.773.579.588.682.691.390.696.8100.3106.8106.4101.996.987.388.893.296.487.782.077.078.882.478.278.277.076.172.275.175.375.273.467.270.170.073.871.474.576.676.478.576.875.594.773.6
Percentage of Assets17.624.023.824.220.120.225.929.930.029.833.633.835.734.032.636.737.741.641.242.942.340.141.240.541.241.241.941.343.242.442.342.342.940.741.443.344.144.546.944.544.248.352.953.80.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-312007-12-31
Value0.4690.4680.4670.4680.4670.4660.4650.4650.4640.4630.4620.4620.460.460.4590.4580.4580.4580.4620.4680.4740.4830.4850.4850.4830.4840.4850.4890.4920.4970.5030.5040.5130.5210.5220.5370.5460.0005560.0005660.0005630.5660.5690.5790.6220.6380.698
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.20.2
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NoncontrollingInterest


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-312007-12-31
Value1513131211131312129.617.6778.2247.8117.4756.9787.0987.1446.7596.9817.2967.1027.0827.2017.6237.5857.8197.9838.1558.2288.0918.0818.8612131414130.0128530.011260.0109131111115.4785.0113.555
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest2.92.92.92.62.73.23.13.23.12.62.22.52.42.21.91.81.81.81.91.81.71.61.61.81.71.71.71.71.71.71.71.92.62.62.82.82.92.72.42.42.52.52.41.21.40.8
Percentage of Assets0.80.90.90.90.70.71.01.11.00.80.70.80.80.70.60.70.80.80.80.90.90.80.90.90.90.90.90.91.01.01.01.11.51.61.71.71.71.71.51.41.41.61.70.90.00.0
Percentage of Assets us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-312007-12-31
Value8347877578128107787737447417297257057127077217637597457357367347237207037016876776556416266065885715585405204910.4866570.4707760.454663429407396346274201
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest156.9164.0165.4167.2180.9194.0179.1192.4189.9199.8205.6214.4214.9204.9198.9190.9192.2198.6203.4186.4173.1160.2163.6166.9154.0151.2146.3140.2131.4133.6128.1124.9120.6108.8108.1104.3105.0101.3100.1100.094.793.187.276.176.244.2
Percentage of Assets41.052.749.955.045.944.156.263.062.961.468.867.972.168.366.980.481.788.787.091.289.383.585.582.081.379.579.576.178.675.472.070.270.465.963.864.662.763.163.058.154.857.360.054.20.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStockCommon


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-312014-12-312013-12-31
Value-598.627-599.851-601.214-601.254-602.117-603.531-605.314-605.37-607.004-608.49-610.177-610.214-612.841-613.738-615.677-615.917-618.452-614.233-603.262-586.057-533.744-527.595-477.399
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-112.5-124.9-131.3-123.7-134.4-150.4-140.2-156.4-155.4-166.6-172.9-185.6-184.8-177.8-169.7-154.1-156.5-163.7-166.7-148.3-121.1-113.9-100.8
Percentage of Assets-29.4-40.1-39.6-40.7-34.1-34.2-44.0-51.2-51.5-51.2-57.9-58.8-62.0-59.3-57.1-64.9-66.5-73.1-71.3-72.6-63.3-61.9-56.7
Percentage of Assets us-gaap:TreasuryStockCommon0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Additional Paid In Capital

us-gaap:AdditionalPaidInCapital

us-gaap:AdditionalPaidInCapital


Additional
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value3583593603573553553563533543533533513523513513483513493483463473473473473563553563553523523563543473453503493460.3428950.3503860.348519346343349344
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 Assets17.624.023.824.220.120.225.929.930.029.833.633.835.734.032.636.737.741.641.242.942.340.141.240.541.241.241.941.343.242.442.342.342.940.741.443.344.144.546.944.544.248.352.953.8

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
Value8347877578128107787737447417297257057127077217637597457357367347237207037016876776556416266065885715585405204910.4866570.4707760.454663429407396346
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 Assets41.052.749.955.045.944.156.263.062.961.468.867.972.168.366.980.481.788.787.091.289.383.585.582.081.379.579.576.178.675.472.070.270.465.963.864.662.763.163.058.154.857.360.054.2

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
Value-78.328-80.713-72.156-96.032-128.528-143.208-106.234-118.7-110.686-119.878-124.596-125.973-129.325-107.903-102.304-103.893-104.707-112.515-126.964-109.832-98.542-85.815-101.365-102.902-74.751-66.02-52.274-33.75-6.357-24.602-20.586-7.886-5.1862822197.1970.010707-0.0054740.00088820232010
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 Assets-3.8-5.4-4.8-6.5-7.3-8.1-7.7-10.0-9.4-10.1-11.8-12.1-13.1-10.4-9.5-10.9-11.3-13.4-15.0-13.6-12.0-9.9-12.0-12.0-8.7-7.6-6.1-3.9-0.8-3.0-2.4-0.9-0.63.42.72.40.91.4-0.70.12.73.43.11.6

Treasury Stock Value

us-gaap:TreasuryStockValue

us-gaap:TreasuryStockValue


Treasury
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value5985996016016026036056056076086106106126136156156186146035865665415335345355305275185084944774734524324284043900.373440.3572670.360815354348322251
Percentage of TreasuryStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets29.440.139.640.734.134.244.051.251.551.257.958.862.059.357.164.966.573.171.372.669.062.563.362.362.061.461.960.262.359.456.756.555.951.150.650.249.748.447.846.145.349.048.939.3

Minority Interest

us-gaap:MinorityInterest

us-gaap:MinorityInterest


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value1513131211131312129.617.6778.2247.8117.4756.9787.0987.1446.7596.9817.2967.1027.0827.2017.6237.5857.8197.9838.1558.2288.0918.0818.8612131414130.0128530.011260.0109131111115.478
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.80.90.90.90.70.71.01.11.00.80.70.80.80.70.60.70.80.80.80.90.90.80.90.90.90.90.90.91.01.01.01.11.51.61.71.71.71.71.51.41.41.61.70.9

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

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312012-03-312011-12-312011-09-302011-06-302011-03-31
Value3.3714.0283.0363.4953.0572.9193.1513.1293.3663.1682.8533.1092.5743.6093.4943.5222.8082.0280.0033880.004293-7.7034373.9553.76
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312012-03-312011-12-312011-09-302011-06-302011-03-31
Value3.3714.0283.0363.4953.0572.9193.1513.1293.3663.1682.8533.1092.5743.6093.4943.5222.8082.3190.0033880.004293-7.7034373.9553.76
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0114.3100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Minority Interest Decrease From Distributions To Noncontrolling Interest Holders

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value1980000.02385000.01738000.01890000.03000000.01850000.01350000.01350000.01350000.0900000.0900000.0900000.0180000.0945000.0900000.0945000.0855000.0945000.01080000.01035000.0810000.0900000.06885000.0-900000.0-1035000.0-990000.0-1125000.0-1125000.0-1035000.0-990000.0-763000.0-1035000.0-1276000.0-1109000.0-765000.0-720000.0-719280.0-720.0-765.01856200.0-869000.0-990000.0
Percentage of MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value1980000.02385000.01738000.01890000.03000000.01850000.01350000.01350000.01350000.0900000.0900000.0900000.0180000.0945000.0900000.0945000.0855000.0945000.01080000.01035000.0810000.0900000.06885000.0-900000.0-1035000.0-990000.0-1125000.0-1125000.0-1035000.0-990000.0-763000.0-1035000.0-1276000.0-1109000.0-765000.0-720000.0-719280.0-720.0-765.01856200.0-869000.0-990000.0
Percentage of MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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
Value636985814362536341792.236613767-36.4912450740.7515441111730813.82323018136136336.4944314480.0146640.074297-47.9414982324134-74.5150442351
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 RevenueFromContractWithCustomerExcludingAssessedTax11.412.914.916.59.514.411.616.010.520.30.516.810.718.0-8.66.714.322.20.217.313.63.75.19.926.31.29.59.96.14.519.312.311.62.314.75.216.85.00.0-15758.08.08.812.3-27495.88.518.9

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-493.475-11.807-25.877-50.23-14.279-22.041-118.768-15.982-14.916-13.185-11.596-14.97-10.913-10.083-42.733-15.979-96.079-14.196-61.187-11.09-12.932-15.148-17.325-19.68-18.024-22.14-15.92-32.922-19.96-23.12-18.742-25.476-11.207-4.105-43.424-15.556-21.940999-0.011001-0.02143753-50.048-3.87-43.17700912-5.708-6.608
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-88.9-2.2-4.5-10.2-3.2-5.1-25.7-4.0-3.8-3.3-2.8-4.1-3.1-2.7-10.0-4.5-27.2-4.2-17.7-3.5-4.2-4.8-5.1-6.4-5.8-6.8-4.7-10.8-6.8-7.7-5.9-8.6-3.9-1.4-14.7-5.4-7.6-3.8-0.017701.0-17.0-1.4-3.94536.8-2.1-2.4

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value454-54.183-63.336-381.661-70.89340372-34.891-31.605-53.107-6.297-21.295-28.358-46.12973-7.75656-49.80559-29.281-41.52413-25.436-6.046-30.6689.25-26.213.038-26.703-24.37-25.161-15.333-29.919-0.249-9.253-5.165-20.5511750.004175-0.065395-77.9737143047-85.84375940-19.427-20.857
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 RevenueFromContractWithCustomerExcludingAssessedTax81.9-10.0-11.1-77.4-15.693.415.7-8.8-8.1-13.5-1.5-5.8-8.1-12.317.1-2.215.9-14.717.3-9.4-13.64.3-7.4-2.0-9.92.8-7.81.0-9.0-8.1-7.9-5.2-10.3-0.1-3.1-1.8-7.11.4-0.0-25629.410.317.1-7.814845.0-7.1-7.7

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

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value241.2212.184-345.844-39.334369.7948.868-4.5113-15.64222-10.3347.157-4.405
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.50.20.4-70.2-8.7101.02.12.2-1.13.3-3.76.2-3.01.9-1.0

Amortization Of Financing Costs

us-gaap:AmortizationOfFinancingCosts

us-gaap:AmortizationOfFinancingCosts


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value272000.0175000.0183000.0183000.0183000.0183000.0174000.0174000.0179000.0556000.0248000.0250000.0247000.0247000.0224000.0180000.0170000.0171000.0171000.0170000.0177000.0235000.0178000.0178000.0178000.0178000.0178000.0178000.0179000.0170000.0171000.0169000.0144000.0175000.0277000.0184000.0346850.0153.0154.0-289560.062000.0228000.0671550.0447.0-149000.0149000.0
Percentage of AmortizationOfFinancingCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred 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-4.432-1.09-4.04-4.442-1.34.589-0.0221.37-0.366-2.358-2.699-2.949-1.355-0.9728.6222.2546.819-0.918-6.951-0.5290.8145.0834.9374.7211.138-1.479-3.5378.0164.0450.991.4252.77-1.2783.9750.2210-8.095778-0.001222-0.003924-8.0704182.7155.361-3.0327571.566757-3.1281.564
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

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
Value-21.462-27.05335-20.55737-11.6117.097-9.017-9.108-18.5847-11.488-24.501-41.19772131.941-28.61310.165-23.616-0.329244.469-34.0122416141.1468.092-6.582-3.5137.816-5.0120.6910.004-1.091969-0.003031-0.0205435.9343325.719-11.6270.111461140.972-15.016
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
Value636985814362536341792.236613767-36.4912450740.7515441111730813.82323018136136336.4944314480.0146640.074297-47.9414982324134-74.5150442351
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 RevenueFromContractWithCustomerExcludingAssessedTax11.412.914.916.59.514.411.616.010.520.30.516.810.718.0-8.66.714.322.20.217.313.63.75.19.926.31.29.59.96.14.519.312.311.62.314.75.216.85.00.0-15758.08.08.812.3-27495.88.518.9

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value47504421312128181119205.3755.5184.591-41.452141419-0.61411111117111418211316201917121720285.3230.015881160.0253712210490.018671313
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.59.47.84.36.95.06.14.63.04.84.91.51.61.2-9.74.14.25.7-0.23.73.83.65.03.64.75.86.54.35.76.76.15.94.36.26.99.91.85.45.48.37.63.74.66.94.94.9

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value52554624332430191320206.7446.2975.932-40.7241515200.33912121117121520231418212019121821296.2480.0168170.0172450.0264352311530.0197881414
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.410.28.24.97.45.76.65.13.55.25.01.81.81.6-9.54.34.56.00.14.04.13.85.24.05.06.26.94.86.17.06.66.54.46.57.210.42.25.70.08.77.94.04.97.35.35.2

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

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value1.3541.0591.2450.5150.0580.110.291-0.793-0.738-1.845-2.371-2.981-3.565
Percentage of ProfitLoss2.61.92.72.10.20.40.9-4.0-5.4-9.0-11.4-44.2-56.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.20.20.10.00.00.1-0.2-0.2-0.5-0.6-0.8-1.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.00.00.00.00.0

Share Based Compensation

us-gaap:ShareBasedCompensation

us-gaap:ShareBasedCompensation


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value3.34.0283.0363.53.12.93.1513.13.33.1682.8533.12.63.6093.4943.52.82.0412.4952.71.82.7592.7353.32.62.692.2763.22.73.163.3923.33.43.1913.0663.43.50.0033880.0042933.84.03.7613-6.5850243.4073.188
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

us-gaap:ShareBasedCompensation us-gaap:AwardType

us-gaap:PerformanceShares


Share
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value0.30.00.40.350.350.60.60.2
Percentage of ShareBasedCompensation9.10.011.411.312.119.019.46.1

us-gaap:RestrictedStockUnitsRSU


Share
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-31
Value-0.73.33.12.72.62.53.13.23.12.63.63.52.82.32.61.82.83.22.52.63.02.63.03.13.23.13.33.33.3
Percentage of ShareBasedCompensation-21.281.988.687.189.780.693.9101.0100.0100.099.8100.0100.0112.796.3100.0101.597.096.296.793.896.394.993.994.197.197.194.397402.6

us-gaap:ShareBasedCompensation us-gaap:AwardType, us-gaap:PlanName

us-gaap:PerformanceShares, ttec:Prsus2019


Share
Period End2021-03-312020-03-31
Value0.30.4
Percentage of ShareBasedCompensation7.413.8

us-gaap:ShareBasedCompensation us-gaap:IncomeStatementLocation

us-gaap:CostOfSales


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value1.11.30.91.31.11.01.01.01.41.21.21.11.01.31.21.41.00.40.81.00.60.70.90.90.50.60.60.50.50.60.60.60.60.5
Percentage of ShareBasedCompensation33.332.329.637.135.534.531.732.342.437.942.135.538.536.034.340.035.719.632.137.033.325.432.927.319.222.326.415.618.519.017.718.217.615.7

us-gaap:SellingGeneralAndAdministrativeExpenses


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value2.22.72.0999999999999992.22.01.92.12.11.92.01.62.01.62.32.32.11.81.61.71.71.22.11.82.42.12.11.72.22.22.62.82.72.82.7
Percentage of ShareBasedCompensation66.767.069.262.964.565.566.667.757.663.156.164.561.563.765.860.064.378.468.163.066.776.165.872.780.878.174.768.881.582.382.581.882.484.6

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-493.475-11.807-25.877-50.23-14.279-22.041-118.768-15.982-14.916-13.185-11.596-14.97-10.913-10.083-42.733-15.979-96.079-14.196-61.187-11.09-12.932-15.148-17.325-19.68-18.024-22.14-15.92-32.922-19.96-23.12-18.742-25.476-11.207-4.105-43.424-15.556-21.940999-0.011001-0.02143753-50.048-3.87-43.17700912-5.708-6.608
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-88.9-2.2-4.5-10.2-3.2-5.1-25.7-4.0-3.8-3.3-2.8-4.1-3.1-2.7-10.0-4.5-27.2-4.2-17.7-3.5-4.2-4.8-5.1-6.4-5.8-6.8-4.7-10.8-6.8-7.7-5.9-8.6-3.9-1.4-14.7-5.4-7.6-3.8-0.017701.0-17.0-1.4-3.94536.8-2.1-2.4

Payments To Acquire Property Plant And Equipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1211111515161616151311149.3757.5088.02614171211111214171916131517191518189.5554.1057.39415170.0064840.017501-12.3408348.4923.8726-12.2986095.7086.608
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

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment us-gaap:StatementBusinessSegments

ttec:TtecDigital


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value1.8981.5320.921.6352.8882.4384.6830.3185.6553.7411.3862.1051.187
Percentage of PaymentsToAcquirePropertyPlantAndEquipment15.813.27.710.319.114.528.72.037.128.311.914.112.7

ttec:TtecEngage


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value10101114121411159.5739.45910128.188
Percentage of PaymentsToAcquirePropertyPlantAndEquipment84.286.892.389.780.985.571.398.062.971.788.185.987.3

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
Value454-54.183-63.336-381.661-70.89340372-34.891-31.605-53.107-6.297-21.295-28.358-46.12973-7.75656-49.80559-29.281-41.52413-25.436-6.046-30.6689.25-26.213.038-26.703-24.37-25.161-15.333-29.919-0.249-9.253-5.165-20.5511750.004175-0.065395-77.9737143047-85.84375940-19.427-20.857
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 RevenueFromContractWithCustomerExcludingAssessedTax81.9-10.0-11.1-77.4-15.693.415.7-8.8-8.1-13.5-1.5-5.8-8.1-12.317.1-2.215.9-14.717.3-9.4-13.64.3-7.4-2.0-9.92.8-7.81.0-9.0-8.1-7.9-5.2-10.3-0.1-3.1-1.8-7.11.4-0.0-25629.410.317.1-7.814845.0-7.1-7.7

Payments Of Dividends Common Stock

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:PaymentsOfDividendsCommonStock


Payments
Period End2020-12-312020-09-302019-12-312019-09-302018-12-312018-09-302017-12-312017-09-302016-12-312016-09-302015-12-312015-09-30
Value1180.0140.0120.0110.09.34-0.0018.7130.0
Percentage of PaymentsOfDividendsCommonStock100.00.0100.00.0100.00.0100.00.0100.0100.0100.00.0

Effective Income Tax Rate Continuing Operations

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:EffectiveIncomeTaxRateContinuingOperations


Effective
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-30
Value17.822.5-2.525.90.2480.292-0.0370.2060.350.2670.0960.2190.0940.2620.7280.1170.0920.211-0.0690.1910.2760.0870.3360.180.2820.230.1190.2490.2330.114-0.138-0.2560.099-0.0190.006
Percentage of EffectiveIncomeTaxRateContinuingOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Liabilities

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxLiabilities


Deferred
Period End2021-06-302021-03-312020-09-302014-12-312013-12-312012-12-312011-12-31
Value6.06.49.329132215
Percentage of DeferredTaxLiabilities100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Net

us-gaap:DeferredTaxAssetsNet

us-gaap:DeferredTaxAssetsNet


Deferred
Period End2020-12-312019-12-312019-09-302019-06-302018-12-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-312011-12-31
Value576012154534313347718251545278656867
Percentage of DeferredTaxAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsNet us-gaap:IncomeTaxAuthority

country:US


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value1.23.93.04.245
Percentage of DeferredTaxAssetsNet2.16.56.612.162.7

ttec:ForeignJurisdictions


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value8.56.62.23.58.48.4171921
Percentage of DeferredTaxAssetsNet14.810.94.910.111.710.121.629.330.7

Unrecognized Tax Benefits

us-gaap:UnrecognizedTaxBenefits

us-gaap:UnrecognizedTaxBenefits


Unrecognized
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value7.5094.7844.7843.2982.3822.7091.6610.3580.3582.7359.03522
Percentage of UnrecognizedTaxBenefits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Valuation Allowance

us-gaap:DeferredTaxAssetsValuationAllowance

us-gaap:DeferredTaxAssetsValuationAllowance


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value2020181717109.5269.949101010201622
Percentage of DeferredTaxAssetsValuationAllowance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ttec:AcquisitionAllowanceForCreditLosses

ttec:AcquisitionAllowanceForCreditLosses


Acquisition
Period End2021-06-30
Value988000.0
Percentage of AcquisitionAllowanceForCreditLosses100.0

ttec:AcquisitionOfLongLivedAssetsThroughFinanceLeases

ttec:AcquisitionOfLongLivedAssetsThroughFinanceLeases


Acquisition
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value0.4880.1370.0380.2150.7620.8370.5591.854-2.2993.6173.536
Percentage of AcquisitionOfLongLivedAssetsThroughFinanceLeases100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ttec:AmortizationOfContractAcquisitionCosts

ttec:AmortizationOfContractAcquisitionCosts


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value174000.0176000.0258000.0127000.075000.0130000.0251000.0263000.0235000.0253000.01832000.0425000.0396000.0362000.0405000.0464000.0403000.0406000.0160000.0165000.0165000.0169000.0146000.0217000.0256000.0281000.0116000.083000.0299000.0358000.0407000.0247000.0251000.0255000.0254000.0255000.0507740.0256.0232.0-1007600.0374000.0635000.05262200.0-2692200.01769000.0928000.0
Percentage of AmortizationOfContractAcquisitionCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ttec:BenefitExpenseToIncomeTaxesAcquisitionEarnouts

ttec:BenefitExpenseToIncomeTaxesAcquisitionEarnouts


Benefit
Period End2020-12-312020-06-302020-03-31
Value400000.0300000.0-900000.0
Percentage of BenefitExpenseToIncomeTaxesAcquisitionEarnouts100.0100.0100.0

ttec:BenefitToIncomeTaxesRelatedToAmortizationOfPurchasedIntangibles

ttec:BenefitToIncomeTaxesRelatedToAmortizationOfPurchasedIntangibles


Benefit
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1100000.01000000.01000000.01100000.0700000.0700000.0700000.0800000.0
Percentage of BenefitToIncomeTaxesRelatedToAmortizationOfPurchasedIntangibles100.0100.0100.0100.0100.0100.0100.0100.0

ttec:BusinessCombinationProFormaInformationAmortizationExpenseOfAcquireesSinceAcquisition

ttec:BusinessCombinationProFormaInformationAmortizationExpenseOfAcquireesSinceAcquisition


Business
Period End2021-06-302021-03-312020-12-312018-12-312018-09-302018-06-302017-12-312017-09-302015-12-312015-09-302015-06-302014-12-312014-09-302014-06-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value5400000.0800000.02200000.01600000.01600000.01600000.01400000.0900000.02500000.0300000.0700000.04200000.0800000.0700000.02800000.01200000.0900000.0900000.01900000.0100000.0100000.00
Percentage of BusinessCombinationProFormaInformationAmortizationExpenseOfAcquireesSinceAcquisition100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

ttec:CashFlowHedgeGainLossReclassifiedToEarningsNetOfTax

ttec:CashFlowHedgeGainLossReclassifiedToEarningsNetOfTax


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value-1.354-1.059-1.245-0.515-0.058-0.11-0.2910.7930.7381.8452.3712.9813.5653.8933.7123.4872.9694.1365.5614.1793.4573.553-3.208-2.161-1.3021.1394.314-0.012-1.0591.115-8.0890.3981.582-1.919
Percentage of CashFlowHedgeGainLossReclassifiedToEarningsNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ttec:ContingentConsiderationImputedInterestExpenseAndFairValueAdjustments

ttec:ContingentConsiderationImputedInterestExpenseAndFairValueAdjustments


Contingent
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value0.1690.8772.5350.008-1.2793.222.1320.762-1.9191.3642.0133.0763.1172.0110.0120.0080.0110.02-0.203-4.5150.050.145
Percentage of ContingentConsiderationImputedInterestExpenseAndFairValueAdjustments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ttec:ContingentConsiderationPayableImputedInterestExpenseAndOtherAdjustments

ttec:ContingentConsiderationPayableImputedInterestExpenseAndOtherAdjustments


Contingent
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value169000.0877000.02526000.00-1084000.0-3265000.000-2456000.093000.0-388000.05000.0-20000.024000.015000.05000.00-4206000.050000.0145000.0-106000.0
Percentage of ContingentConsiderationPayableImputedInterestExpenseAndOtherAdjustments100.0100.0100.00.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0

ttec:ContingentConsiderationPayableImputedInterestExpenseAndOtherAdjustments us-gaap:BusinessAcquisition

ttec:Fcr


Contingent
Period End2020-12-312020-09-302020-06-302020-03-31
Value-1785000.00-1084000.0-3265000.0
Percentage of ContingentConsiderationPayableImputedInterestExpenseAndOtherAdjustments-70.70.0100.0100.0

ttec:VoiceFoundryAsean


Contingent
Period End2021-06-302021-03-31
Value-69000.0396000.0
Percentage of ContingentConsiderationPayableImputedInterestExpenseAndOtherAdjustments-40.845.2

ttec:Voicefoundry


Contingent
Period End2021-06-302021-03-31
Value238000.0481000.0
Percentage of ContingentConsiderationPayableImputedInterestExpenseAndOtherAdjustments140.854.8

ttec:EffectOfForeignCurrencyAllowanceForDoubtfulAccounts

ttec:EffectOfForeignCurrencyAllowanceForDoubtfulAccounts


Effect
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-2000.0-8000.020000.024000.055000.0-4000.0-445000.0-13000.0-2000.02000.0
Percentage of EffectOfForeignCurrencyAllowanceForDoubtfulAccounts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ttec:IncomeTaxHolidayAggregateDollarAmountNet

ttec:IncomeTaxHolidayAggregateDollarAmountNet


Income
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value2600000.01100000.01100000.0-300000.01400000.02400000.01900000.0
Percentage of IncomeTaxHolidayAggregateDollarAmountNet100.0100.0100.0100.0100.0100.0100.0

ttec:IncomeTaxHolidayIncomeTaxExpenseBenefitsPerShare

ttec:IncomeTaxHolidayIncomeTaxExpenseBenefitsPerShare


Income
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value0.050.020.02-0.010.030.050.04
Percentage of IncomeTaxHolidayIncomeTaxExpenseBenefitsPerShare100.0100.0100.0100.0100.0100.0100.0

ttec:IncreaseDecreaseInCapitalExpendituresIncurredButNotYetPaid

ttec:IncreaseDecreaseInCapitalExpendituresIncurredButNotYetPaid


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value704000.0-3431000.02862000.0-346000.01342000.0-3511000.01374000.0-714000.0-1559000.01780000.0-717000.0808000.0620000.0-372000.0-308000.01679000.0-2635000.01361000.0-139000.0-831000.01546000.0-1257000.0
Percentage of IncreaseDecreaseInCapitalExpendituresIncurredButNotYetPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ttec:IncreaseDecreaseInDeferredRevenueAndOtherLiabilities

ttec:IncreaseDecreaseInDeferredRevenueAndOtherLiabilities


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-26.633-32.088-4.633-18.949-22.123-23.492-15.476-17.3-46.015-11.455-3.13736-1.759-24.687461.8874.1088.071-7.1510.78-3.731-1.745-1.4491.15-9.958-2.598-3.739100.56-7.214-4.4935.086-0.986-7.3252.6576.8781.8147760.0042240.0025915.85467-12.0216.158-19.3167912-1.147-11.255
Percentage of IncreaseDecreaseInDeferredRevenueAndOtherLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ttec:NetChangeInIncomeTaxOtherReconcilingItems

ttec:NetChangeInIncomeTaxOtherReconcilingItems


Net
Period End2020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value100000.0100000.0100000.0100000.0200000.0100000.0100000.0
Percentage of NetChangeInIncomeTaxOtherReconcilingItems100.0100.0100.0100.0100.0100.0100.0

ttec:NetIncomeAttributableToNoncontrollingInterestExcludingMandatorilyRedeemableNoncontrollingInterest

ttec:NetIncomeAttributableToNoncontrollingInterestExcludingMandatorilyRedeemableNoncontrollingInterest


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-31
Value3654000.02908000.02501000.01664000.02216000.01878000.01816000.01474000.01369000.0779000.01341000.0806000.01100000.0922000.01198000.0926000.0680000.01031000.0645000.01090000.01305000.01117000.0957000.01400000.0248000.0642000.0
Percentage of NetIncomeAttributableToNoncontrollingInterestExcludingMandatorilyRedeemableNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ttec:OperatingLeaseModificationsAndReassessments

ttec:OperatingLeaseModificationsAndReassessments


Operating
Period End2021-06-302020-12-312020-09-302020-06-302019-12-312019-09-302019-06-30
Value0.1820.1530.1116.2214.5351810
Percentage of OperatingLeaseModificationsAndReassessments100.0100.0100.0100.0100.0100.0100.0

ttec:PaymentsOfContingentConsideration

ttec:PaymentsOfContingentConsideration


Payments
Period End2020-12-312020-09-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-312016-09-30
Value0.00.00.00.00.3655.5370.5640.00.3860.3990.7350.2390.00.0
Percentage of PaymentsOfContingentConsideration0.00.00.00.0100.0100.0100.00.0100.0100.0100.0100.00.00.0

ttec:ProfitLossExcludingTemporaryEquityNetIncome

ttec:ProfitLossExcludingTemporaryEquityNetIncome


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value51534623322330191320
Percentage of ProfitLossExcludingTemporaryEquityNetIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ttec:ProfitLossExcludingTemporaryEquityNetIncome us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value3.6542.9081.7752.5011.6642.2161.8011.8781.8161.474
Percentage of ProfitLossExcludingTemporaryEquityNetIncome7.25.53.810.55.09.36.09.413.37.2

us-gaap:RetainedEarnings


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value47504421312128181119
Percentage of ProfitLossExcludingTemporaryEquityNetIncome92.894.596.289.595.090.794.090.686.792.8

ttec:RestructuringChargesBeforeAdjustments

ttec:RestructuringChargesBeforeAdjustments


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value1.8090.4020.71.2330.7930.5380.1750.1830.4280.9651.5412.7461.1880.8490.4041.0881.8120.2310.6153.7180.2990.0880.1980.8091.6660.5930.6570.540.2540.7582.7870.851
Percentage of RestructuringChargesBeforeAdjustments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ttec:RestructuringChargesBeforeAdjustments us-gaap:RestructuringCostAndReserve

us-gaap:EmployeeSeverance


Restructuring
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value0.1570.3470.1170.4430.1750.090.3080.4660.2670.2090.3410.204-1.0680.4671.8120.1052.8430.6840.1130.0880.1980.8091.6520.5930.6570.540.2540.7082.5390.851
Percentage of RestructuringChargesBeforeAdjustments22.428.114.882.3100.049.272.048.317.37.628.724.0-264.442.9100.045.5462.318.437.8100.0100.0100.099.2100.0100.0100.0100.093.491.1100.0

us-gaap:FacilityClosing


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302014-12-312014-09-302013-12-312013-09-30
Value0.9250.4020.5430.8860.6760.0950.00.0930.120.4991.2742.5370.8470.6451.4720.6210.00.126-2.2283.0340.0140.00.00.05
Percentage of RestructuringChargesBeforeAdjustments51.1100.077.671.985.217.70.050.828.051.782.792.471.376.0364.457.10.054.5-362.381.60.80.00.06.6

ttec:TemporaryEquityDistributions

ttec:TemporaryEquityDistributions


Temporary
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-06-30
Value1224000.0795000.01287000.00241000.00
Percentage of TemporaryEquityDistributions100.0100.0100.00.0100.00.0

ttec:VariableLeaseCostNet us-gaap:IncomeStatementLocation

ttec:VariableLeaseCostNet

us-gaap:CostOfSales


Variable
Period End2021-06-302020-06-30
Value-319000.0284000.0
Percentage of VariableLeaseCostNet100.0100.0

us-gaap:AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet

us-gaap:AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet


Adjustment
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value800000.01200000.01000000.01000000.0800000.01500000.01200000.01200000.0400000.0200000.0100000.0200000.01000000.0700000.0300000.0
Percentage of AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivableWriteOffs

us-gaap:AllowanceForDoubtfulAccountsReceivableWriteOffs


Allowance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value178000.083000.0-59000.0806000.0107000.0208000.0-405000.01701000.082000.015000.0
Percentage of AllowanceForDoubtfulAccountsReceivableWriteOffs100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetImpairmentCharges

us-gaap:AssetImpairmentCharges


Asset
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.73.5174.1650.9480.00.6960.1660.02.0631.5060.3320.00.01.125.3220.00.00.0265.6020.00.05.0343.0660.00.00.3730.00.00.00.00.01.2050.00.00.1610.9970.00180.00.00.00.231.9569940.0003270.6790.0
Percentage of AssetImpairmentCharges100.0100.0100.0100.00.0100.0100.00.0100.0100.0100.00.00.0100.0100.00.00.00.0100.0100.00.00.0100.0100.00.00.0100.00.00.00.00.00.0100.00.00.0100.0100.0100.00.00.00.0100.0100.0100.0100.00.0

us-gaap:BusinessAcquisitionsProFormaIncomeLossFromContinuingOperationsBeforeChangesInAccountingAndExtraordinaryItemsNetOfTax

us-gaap:BusinessAcquisitionsProFormaIncomeLossFromContinuingOperationsBeforeChangesInAccountingAndExtraordinaryItemsNetOfTax


Business
Period End2020-12-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302016-12-312016-09-30
Value47233122623923205.45.6-35.414163.39.4
Percentage of BusinessAcquisitionsProFormaIncomeLossFromContinuingOperationsBeforeChangesInAccountingAndExtraordinaryItemsNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BusinessAcquisitionsProFormaRevenue

us-gaap:BusinessAcquisitionsProFormaRevenue


Business
Period End2020-12-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302016-12-312016-09-30
Value5795004534331255830415419364350451359364417362
Percentage of BusinessAcquisitionsProFormaRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1

us-gaap:BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1


Business
Period End2020-12-312020-06-302020-03-312019-06-302017-03-312016-09-30
Value-2500000.01100000.03300000.02400000.0-4300000.0-4300000.0
Percentage of BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1100.0100.0100.0100.0100.0100.0

us-gaap:BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1 us-gaap:BusinessAcquisition

ttec:Fcr


Business
Period End2020-12-312020-06-302020-03-31
Value1800000.01100000.0400000.0
Percentage of BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1-72.0100.012.1

ttec:VoiceFoundryAcquisitions


Business
Period End2021-06-302021-03-312020-12-31
Value200000.0900000.04300000.0
Percentage of BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability10.00.0-172.0

ttec:VoiceFoundryAsean


Business
Period End2021-06-302021-04-302021-03-312020-12-31
Value100000.02200000.0-400000.01200000.0
Percentage of BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability10.00.00.0-48.0

ttec:Voicefoundry


Business
Period End2021-06-302021-04-302021-03-312020-12-31
Value-200000.0-7400000.0-500000.0-3200000.0
Percentage of BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability10.00.00.0128.0

us-gaap:BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1 us-gaap:Ownership

ttec:Voicefoundry


Business
Period End2020-12-31
Value3200000.0
Percentage of BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1-128.0

us-gaap:BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual

us-gaap:BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual


Business
Period End2021-06-302021-03-312020-12-312018-12-312018-09-302018-06-302017-12-312017-09-302015-12-312015-09-302015-06-302014-12-312014-09-302014-06-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value4.21.03.099999999999999-5.61.41.25.6-4.1-5.83.32.15.81.00.6102.71.70.63.81.11.70.1
Percentage of BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual

us-gaap:BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual


Business
Period End2021-06-302021-03-312020-12-312018-12-312018-09-302018-06-302017-12-312017-09-302015-12-312015-09-302015-06-302014-12-312014-09-302014-06-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value571139604137704324141468117.91171914135620220.6
Percentage of BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentFinancialLiabilities us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentFinancialLiabilities

ttec:VoiceFoundryAsean


Business
Period End2021-09-30
Value200000.0
Percentage of BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentFinancialLiabilities100.0

ttec:Voicefoundry


Business
Period End2021-06-302021-03-31
Value0300000.0
Percentage of BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentFinancialLiabilities0.00.0

us-gaap:BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentFinancialLiabilities us-gaap:Ownership

ttec:Voicefoundry


Business
Period End2021-03-31
Value300000.0
Percentage of BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentFinancialLiabilities0.0

us-gaap:BusinessExitCosts1

us-gaap:BusinessExitCosts1


Business
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302014-12-312014-09-302014-06-302013-12-312013-09-302013-06-30
Value925000.0402000.0543000.0886000.0676000.095000.0093000.0120000.0499000.01275000.02537000.0847000.0645000.01472000.0621000.00126000.0107000.0699000.0186000.014000.000050000.0248000.0
Percentage of BusinessExitCosts1100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.00.00.00.0100.0100.0

us-gaap:BusinessExitCosts1 us-gaap:StatementBusinessSegments

ttec:TtecDigital


Business
Period End2021-06-302021-03-312020-12-312020-09-302019-12-312019-09-30
Value08000.0090000.033000.08000.0
Percentage of BusinessExitCosts10.02.00.010.20.08.6

ttec:TtecEngage


Business
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312018-09-302018-06-30
Value925000.0394000.0543000.0796000.0676000.095000.0-33000.085000.0120000.01275000.02537000.0847000.0
Percentage of BusinessExitCosts1100.098.0100.089.8100.0100.00.091.4100.0100.0100.0100.0

us-gaap:CashAcquiredFromAcquisition

us-gaap:CashAcquiredFromAcquisition


Cash
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value4.4198770.00.00.0031234.5470.00.00.00.030.04.50.05.9970.00.00.02.6550.00.00.00.00.00.00.00.02.6680.0450.8120.06.4230.00.02.3710.01.3716270.001373130.00.0140.0
Percentage of CashAcquiredFromAcquisition100.00.00.0100.0100.00.00.00.0100.00.0100.00.0100.00.00.00.0100.00.00.00.00.00.00.00.00.0100.0100.0100.00.0100.00.00.0100.00.0100.0100.0100.00.0100.00.0

us-gaap:CommonStockDividendsPerShareCashPaid

us-gaap:CommonStockDividendsPerShareCashPaid


Common
Period End2021-06-302021-03-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-30
Value00.4300.340.30.3200.300.2800.270.2500.220.20.1850.1850
Percentage of CommonStockDividendsPerShareCashPaid0.0100.00.0100.0100.0100.00.0100.00.0100.00.0100.0100.00.0100.0100.0100.0100.00.0

us-gaap:CommonStockDividendsPerShareDeclared

us-gaap:CommonStockDividendsPerShareDeclared


Common
Period End2021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312016-12-312015-12-31
Value0.430.400.3400.320.30.300.280.270.270.3850.36
Percentage of CommonStockDividendsPerShareDeclared100.0100.00.0100.00.0100.0100.0100.00.0100.0100.0100.0100.0100.0

us-gaap:ConcentrationRiskPercentage1 us-gaap:MajorCustomers

us-gaap:ConcentrationRiskPercentage1

ttec:FinancialServicesClient


Concentration
Period End2021-03-312020-03-31
Value15.72.9
Percentage of ConcentrationRiskPercentage1100.0100.0

us-gaap:DebtInstrumentIncreaseDecreaseForPeriodNet us-gaap:LongtermDebtType

us-gaap:DebtInstrumentIncreaseDecreaseForPeriodNet

us-gaap:LineOfCredit


Debt
Period End2021-04-30
Value500
Percentage of DebtInstrumentIncreaseDecreaseForPeriodNet100.0

us-gaap:DepreciationAndAmortization

us-gaap:DepreciationAndAmortization


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value242021191818181617161717161717161614161617171715151515131413121111101010100.010116100.0118071111500.0124521212
Percentage of DepreciationAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DepreciationAndAmortization us-gaap:StatementBusinessSegments

ttec:TtecDigital


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value8.4893.8873.9263.5373.2783.2883.1612.5123.2352.3082.2642.3162.082
Percentage of DepreciationAndAmortization34.119.018.018.117.617.417.015.119.013.813.213.412.4

ttec:TtecEngage


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value16161715151515141314141514
Percentage of DepreciationAndAmortization65.981.082.081.982.482.683.084.981.086.286.886.687.6

us-gaap:DerivativeGainLossOnDerivativeNet

us-gaap:DerivativeGainLossOnDerivativeNet


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value40000.0-61000.0-128000.0139000.0371000.0-485000.0-15000.0-77000.0190000.042000.0-865000.0-510000.0
Percentage of DerivativeGainLossOnDerivativeNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsCommonStock

us-gaap:DividendsCommonStock


Dividends
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-03-31
Value0.020100180.0150.0140.0130.0120.0120.0110.010-0.0029.3410.08.92334-8.7130.0-8.710.0
Percentage of DividendsCommonStock0.0100.0100.0100.00.0100.00.0100.00.0100.00.0100.00.0100.00.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.00.0

us-gaap:DividendsCommonStock us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Dividends
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value0.020100180.0150.0140.0130.0120.0120.0110.010-0.0029.3410.08.92334-8.7130.0-8.71
Percentage of DividendsCommonStock0.0100.0100.0100.00.0100.00.0100.00.0100.00.0100.00.0100.00.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Effect
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value646000.0-2576000.06261000.04541000.02729000.0-7374000.02741000.0-3390000.0708000.0-469000.015000.0-2519000.0-8382000.0-4018000.01796000.0
Percentage of EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ExcessTaxBenefitFromShareBasedCompensationOperatingActivities

us-gaap:ExcessTaxBenefitFromShareBasedCompensationOperatingActivities


Excess
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1565000.01775000.018000.0305000.0208000.0195000.0-11000.0685000.0237000.0320000.0-73000.0434000.047000.0227000.0222000.01267000.0419000.0284000.062000.018000.0325000.0196000.0242000.011000.00409000.0313000.036000.0262000.0788000.0269000.028000.0246000.0800000.0-543000.0-131000.01135500.0462.05735.0-771240.094000.0678000.0972000.0000
Percentage of ExcessTaxBenefitFromShareBasedCompensationOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:FinanceLeaseInterestExpense us-gaap:IncomeStatementLocation

us-gaap:FinanceLeaseInterestExpense

us-gaap:InterestExpense


Finance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value36000.040000.046000.049000.052000.056000.058000.043000.032000.08000.0
Percentage of FinanceLeaseInterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseInterestPaymentOnLiability

us-gaap:FinanceLeaseInterestPaymentOnLiability


Finance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value12000.014000.015000.017000.017000.019000.020000.043000.032000.08000.0
Percentage of FinanceLeaseInterestPaymentOnLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeasePrincipalPayments

us-gaap:FinanceLeasePrincipalPayments


Finance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1.5961.7921.9012.1431.7352.1322.1552.1112.2023.783
Percentage of FinanceLeasePrincipalPayments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseRightOfUseAssetAmortization us-gaap:IncomeStatementLocation

us-gaap:FinanceLeaseRightOfUseAssetAmortization

ttec:DepreciationAndAmortization


Finance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1710000.01804000.01884000.01933000.01928000.01916000.01897000.01855000.01798000.01607000.0
Percentage of FinanceLeaseRightOfUseAssetAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GainLossOnDispositionOfAssets

us-gaap:GainLossOnDispositionOfAssets


Gain
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-340000.0-46000.0-444000.0-60000.0-3000.0-14000.0-7000.0-148000.0-27000.0-7000.0-86000.010000.0-17000.0-18000.0-3609000.0-73000.011000.0-23000.0-21000.024000.031000.010000.048000.049000.034000.035000.0-141000.0000-94000.0-12000.0-1000.0107000.0-125000.0-43000.0-136890.0-110.064.0-695650.0488000.0208000.0616520.0-210520.0162000.049000.0
Percentage of GainLossOnDispositionOfAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GainLossOnSaleOfBusiness

us-gaap:GainLossOnSaleOfBusiness


Gain
Period End2020-12-312020-09-302020-06-302020-03-312018-03-312017-12-312017-09-30
Value0.0-17.438172.50.70.63.293
Percentage of GainLossOnSaleOfBusiness0.0100.0100.0100.0100.0100.0100.0

us-gaap:GainLossOnSaleOfBusiness us-gaap:ConsolidatedEntities

ttec:ForeignSubsidiary2


Gain
Period End2021-06-302021-03-312020-09-30
Value0.01717
Percentage of GainLossOnSaleOfBusiness0.00.0-99.8

us-gaap:GoodwillForeignCurrencyTranslationGainLoss

us-gaap:GoodwillForeignCurrencyTranslationGainLoss


Goodwill
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value205000.0-650000.03966000.02089000.01237000.0-4571000.0878000.0-1935000.0578000.0547000.04000.0-1932000.0-3211000.0-1062000.0838000.01269000.01114000.0552000.0-953000.0
Percentage of GoodwillForeignCurrencyTranslationGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GoodwillForeignCurrencyTranslationGainLoss us-gaap:StatementBusinessSegments

ttec:TtecDigital


Goodwill
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value253000.0-504000.02412000.0674000.0577000.0-1068000.0731000.0-611000.0
Percentage of GoodwillForeignCurrencyTranslationGainLoss123.477.560.832.346.623.483.331.6

ttec:TtecEngage


Goodwill
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value-48000.0-146000.01554000.01415000.0660000.0-3503000.0147000.0-1324000.0
Percentage of GoodwillForeignCurrencyTranslationGainLoss-23.422.539.267.753.476.616.768.4

us-gaap:GoodwillOtherIncreaseDecrease

us-gaap:GoodwillOtherIncreaseDecrease


Goodwill
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312018-12-312018-09-302017-12-312017-09-302017-06-302017-03-312016-12-31
Value3700.0114350.3718.4080.23-0.24-39.2721.559-35.125-0.435-15.118
Percentage of GoodwillOtherIncreaseDecrease100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GoodwillOtherIncreaseDecrease us-gaap:StatementBusinessSegments

ttec:TtecDigital


Goodwill
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value3700.0114350.3718.662
Percentage of GoodwillOtherIncreaseDecrease100.0100.0100.0100.0100.0103.0

ttec:TtecEngage


Goodwill
Period End2020-12-312020-09-302020-06-302020-03-31
Value0.00.00.0-0.254
Percentage of GoodwillOtherIncreaseDecrease0.00.00.0-3.0

us-gaap:ImpairmentOfInvestments us-gaap:BusinessAcquisition

us-gaap:ImpairmentOfInvestments

ttec:Cafex


Impairment
Period End2021-06-302021-03-312018-03-31
Value0.01515
Percentage of ImpairmentOfInvestments0.0100.0100.0

us-gaap:IncomeLossFromSubsidiariesTaxExpenseBenefit

us-gaap:IncomeLossFromSubsidiariesTaxExpenseBenefit


Income
Period End2020-09-30
Value3000000.0
Percentage of IncomeLossFromSubsidiariesTaxExpenseBenefit100.0

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-34.034156.2853436-0.93313213725-3.06424-12.6632.72-13.6295.3161610-10.0358.403-9.936-11.5060.084-1.42520-7.5839.7155.135-12.148-10.817110.1315.248-19.399-0.605-29.14913-0.0155260.0118175.715-23.66519-7.837129-1.4169.242
Percentage of IncreaseDecreaseInAccountsPayableAndAccruedLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets


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-25.84422-43.26415-11.068-19.219-5.988-8.322-7.234-5.869-9.314392.374-2.337-7.5484.158157.187-12.56-1.8925.0199.525-1.467.6291.059-1.849-10.818152.249-1.618-5.86712-8.6747.63-5.22918110.007826-0.017037-8.6305416.871.774-16.8341181.9451183.555-5.519
Percentage of IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements


Incremental
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value569000.0612000.050000.0299000.0242000.0315000.0-9000.0287000.0366000.0387000.0-46000.0138000.0374000.0569000.023000.0517000.0460000.0342000.0-6000.0214000.0324000.0347000.06000.0291000.0321000.0401000.0-33000.0427000.0335000.0517000.0-443510.0521000.0356000.0479000.044000.0435000.0228000.0529000.0-2000.0599000.0429000.0
Percentage of IncrementalCommonSharesAttributableToShareBasedPaymentArrangements100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InvestmentIncomeInterest

us-gaap:InvestmentIncomeInterest


Investment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value230000.0179000.0235000.0566000.0491000.0364000.0622000.0522000.0429000.0340000.0536000.01401000.01471000.01068000.0821000.0899000.0695000.0426000.0408000.0397000.0263000.0166000.0213000.0196000.0364000.0317000.0224000.0542000.0492000.0511000.0378000.0938000.0575000.0669000.0743000.0780000.0695000.0760.0782.0896.0720000.0666000.02127400.0571.0486000.0574000.0
Percentage of InvestmentIncomeInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LeaseCost

us-gaap:LeaseCost


Lease
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value13151815141516141614
Percentage of LeaseCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LineOfCreditFacilityAverageOutstandingAmount

us-gaap:LineOfCreditFacilityAverageOutstandingAmount


Line
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value216446550491513973313143243355148.7-21.957649418454103751728313-3.4-0.526297-5.1109.6270-2.810.011219107.0111267.720
Percentage of LineOfCreditFacilityAverageOutstandingAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LineOfCreditFacilityIncreaseDecreaseOtherNet

us-gaap:LineOfCreditFacilityIncreaseDecreaseOtherNet


Line
Period End2021-03-25
Value300
Percentage of LineOfCreditFacilityIncreaseDecreaseOtherNet100.0

us-gaap:LineOfCreditFacilityIncreaseDecreaseOtherNet us-gaap:BusinessAcquisition

ttec:Avtex


Line
Period End2021-04-30
Value500
Percentage of LineOfCreditFacilityIncreaseDecreaseOtherNet0.0

us-gaap:LineOfCreditFacilityInterestRateDuringPeriod

us-gaap:LineOfCreditFacilityInterestRateDuringPeriod


Line
Period End2021-06-302021-03-312020-12-312020-09-302013-12-312013-09-302013-06-302012-12-312012-09-302012-06-30
Value1.31.10.31.284-0.0010.0140.0150.0010.0160.016
Percentage of LineOfCreditFacilityInterestRateDuringPeriod100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LineOfCreditFacilityInterestRateDuringPeriod us-gaap:Range, us-gaap:VariableRate

srt:Maximum, ttec:CompanySNetLeverageRatio


Line
Period End2021-06-302021-03-312020-09-302020-06-30
Value0.8750.8750.750.0075
Percentage of LineOfCreditFacilityInterestRateDuringPeriod67.379.558.40.0

srt:Maximum, us-gaap:Eurodollar


Line
Period End2021-06-302021-03-312020-09-302020-06-30
Value1.8751.8751.750.0175
Percentage of LineOfCreditFacilityInterestRateDuringPeriod144.2170.5136.30.0

srt:Minimum, us-gaap:Eurodollar


Line
Period End2021-06-302021-03-312020-09-302020-06-30
Value1.01.01.00.01
Percentage of LineOfCreditFacilityInterestRateDuringPeriod76.990.977.90.0

us-gaap:LineOfCreditFacilityInterestRateDuringPeriod us-gaap:VariableRate

us-gaap:LondonInterbankOfferedRateLIBOR


Line
Period End2021-06-302021-03-312020-09-302020-06-30
Value1.251.251.250.0125
Percentage of LineOfCreditFacilityInterestRateDuringPeriod96.2113.697.40.0

us-gaap:NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1 us-gaap:BusinessAcquisition

us-gaap:NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1

ttec:Avtex


Noncash
Period End2021-04-08
Value3162000.0
Percentage of NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1100.0

us-gaap:NoncontrollingInterestIncreaseFromBusinessCombination

us-gaap:NoncontrollingInterestIncreaseFromBusinessCombination


Noncontrolling
Period End2020-12-312020-09-302020-06-302020-03-312012-12-312012-09-302012-06-302012-03-312011-09-30
Value0.00.00.0993.750.00.00.9396350.0013650.0
Percentage of NoncontrollingInterestIncreaseFromBusinessCombination0.00.0100.0100.00.00.0100.0100.00.0

us-gaap:OciBeforeReclassificationsNetOfTaxAttributableToParent us-gaap:StatementEquityComponents

us-gaap:OciBeforeReclassificationsNetOfTaxAttributableToParent

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Oci
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value0.0480.1080.2440.2620.2520.258-0.7890.0850.0120.1040.0920.2050.2060.209-0.1630.2440.2480.246-0.4281.5260.4270.377-0.795-0.0040.026-2.8410.003
Percentage of OciBeforeReclassificationsNetOfTaxAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Oci
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-1.194-3.7733.0883.423.726-7.9133.7541.6955.194.9065.9048.429
Percentage of OciBeforeReclassificationsNetOfTaxAttributableToParent-2487.5-3493.51265.61305.31478.6-3067.1-475.81994.143250.04717.36417.44111.7

us-gaap:AccumulatedOtherComprehensiveIncome


Oci
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value1.103-9.544221214-36.95312-7.1739.986.6123.8496.435-17.757-1.6055.4194.521018-11.518-6.387-9.06819-1.899-30.536-10.241-15.131-18.735
Percentage of OciBeforeReclassificationsNetOfTaxAttributableToParent2297.9-8837.09329.14768.75855.2-14322.9-1549.6-8438.883166.76357.74183.73139.0-8619.9-767.9-3324.51852.54393.17602.42691.1-418.5-2123.75120.7238.9763400.0-39388.5532.6-624500.0

us-gaap:AccumulatedTranslationAdjustment


Oci
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value2.249-5.879198.81210-29.2989.261-8.9534.7781.602-2.147-2.199-20.022-5.7-0.181-1.2463.1996.136-12.813-8.545-9.359.8961.175-21.872-6.148-10.999-11.565
Percentage of OciBeforeReclassificationsNetOfTaxAttributableToParent4685.4-5443.57963.53363.44276.6-11355.8-1173.8-10532.939816.71540.4-2333.7-1072.7-9719.4-2727.3111.0-510.71289.92494.32993.7-560.0-2189.72624.9-147.8546800.0-23646.2387.2-385500.0

us-gaap:OperatingLeaseCost us-gaap:IncomeStatementLocation

us-gaap:OperatingLeaseCost

us-gaap:AccumulatedOtherThanTemporaryImpairment


Operating
Period End2021-06-302021-03-312020-12-312020-09-30
Value0.2231.6973.6710.948
Percentage of OperatingLeaseCost100.0100.0100.0100.0

us-gaap:CostOfSales


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value10101111111213101210
Percentage of OperatingLeaseCost4529.6615.1306.41207.40.00.00.00.00.00.0

us-gaap:OtherNonoperatingIncomeExpense


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.310.310.310.310.2870.2420.2420.2420.2420.242
Percentage of OperatingLeaseCost139.018.38.432.70.00.00.00.00.00.0

us-gaap:RestructuringCharges


Operating
Period End2021-06-302021-03-312020-12-312020-09-30
Value0.4010.240.5350.261
Percentage of OperatingLeaseCost179.814.114.627.5

us-gaap:SellingGeneralAndAdministrativeExpenses


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.7210.6060.5470.530.8580.5420.550.5511.3631.267
Percentage of OperatingLeaseCost323.335.714.955.90.00.00.00.00.00.0

us-gaap:OperatingLeasePayments us-gaap:StatementScenario

us-gaap:OperatingLeasePayments

ttec:FixedPayments


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value13131413131413121312
Percentage of OperatingLeasePayments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0.219-3.6655.8155.355.101-10.5495.4731.2556.0824.184.8477.463-2.019
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0.059-0.9511.4821.4151.317-2.7461.4280.3531.631.1191.3142.015-0.513
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-1.194-3.7733.0883.423.726-7.9133.7541.6955.194.9065.9048.4292.059
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax

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


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value1354000.01059000.01245000.0515000.058000.0110000.0291000.0-793000.0-738000.0-1845000.0-2371000.0-2981000.0-3565000.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-30
Value14000.0126000.0248000.0203000.0-516000.029000.0-56000.0-263000.0101000.093000.0140000.092000.04000.0-134000.060000.0-125000.086000.0-284000.0-252000.050000.035000.0116000.0-130000.0-90000.066000.035000.012000.0-367000.0
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value-0.0240.0360.1120.130.1190.127-0.840.037-0.0380.055-0.0090.1030.1060.108-0.2810.1270.130.129-0.4810.8020.2250.175-0.5670.2210.234-2.5950.272
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value0.16-2.7144.3333.9353.784-7.8034.0450.9024.4523.0613.5335.448
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent-666.7-7538.93868.83026.93179.8-6144.1-481.52437.8-11715.85565.5-39255.65289.3

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value2.385-8.557233214-36.97412-8.0149.1924.7181.3773.352-21.422-5.5991.5890.8147.80814-17.132-11.29-12.727151.537-28.151-8.731-13.746-18.524
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent-9937.5-23769.421317.924996.912336.1-29113.4-1484.0-21659.5-24189.58578.2-15300.03254.4-20209.4-5184.3-565.5640.96006.211200.83561.7-1407.7-5656.48885.7-271.1-12738.0-3731.2529.7-6810.3

us-gaap:AccumulatedTranslationAdjustment


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value2.249-5.879192810-29.2989.261-8.9534.7781.602-2.147-2.199-20.022-5.7-0.181-1.2463.1996.136-12.813-8.545-9.359.8961.175-21.872-6.148-10.999-11.565
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent-9370.8-16330.617349.121870.09056.3-23069.3-1102.5-24197.3-12573.72912.723855.6-2135.0-18888.7-5277.864.4-981.12460.84756.62663.8-1065.5-4155.65654.9-207.2-9896.8-2627.4423.9-4251.8

us-gaap:OtherComprehensiveIncomeOtherNetOfTax

us-gaap:OtherComprehensiveIncomeOtherNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value-24000.036000.0112000.0130000.0119000.0127000.0-840000.037000.0-38000.055000.0-9000.0103000.0106000.0108000.0-281000.0127000.0130000.0129000.0-481000.0802000.0225000.0175000.0-567000.0223000.0234000.0-2595000.0272000.0248000.0
Percentage of OtherComprehensiveIncomeOtherNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForRestructuring

us-gaap:PaymentsForRestructuring


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value0.7620.5020.5830.6870.9120.6140.1890.3310.5711.0161.3341.1971.2370.6490.9720.9390.3770.5121.5992.193-0.066-0.186-0.42-0.611-0.63-1.208-0.697-0.496-0.811-0.628
Percentage of PaymentsForRestructuring100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForRestructuring us-gaap:RestructuringCostAndReserve

us-gaap:EmployeeSeverance


Payments
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value0.0010.3470.2360.4830.0150.110.3080.7120.0180.2080.3850.3260.9050.2940.2940.3991.9340.964-0.066-0.186-0.42-0.611-0.63-1.208-0.683-0.496-0.811-0.628
Percentage of PaymentsForRestructuring0.250.525.978.77.933.253.970.11.317.431.150.293.131.378.077.9121.044.0100.0100.0100.0100.0100.0100.098.0100.0100.0100.0

us-gaap:FacilityClosing


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312014-12-312014-09-30
Value0.6820.5020.5820.340.6760.1310.1740.2210.2630.3041.3160.9890.8520.3230.0670.6450.0830.113-0.335-0.0140.0
Percentage of PaymentsForRestructuring89.5100.099.849.574.121.392.166.846.129.998.782.668.949.86.968.722.022.1-21.02.0-0.0

us-gaap:PaymentsOfDebtIssuanceCosts

us-gaap:PaymentsOfDebtIssuanceCosts


Payments
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-312017-09-302016-12-312016-09-302015-12-312015-09-302014-12-312014-09-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value10000.00035000.00090000.01729000.000880000.035000.005000.00000068000.01732000.0035000.00431580.0419.00-21978.0022000.02288000.0000
Percentage of PaymentsOfDebtIssuanceCosts100.00.00.0100.00.00.0100.0100.00.00.0100.0100.00.0100.00.00.00.00.00.0100.0100.00.0100.00.0100.0100.00.0100.00.0100.0100.00.00.00.0

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value2753000.03927000.065000.01238000.01408000.01810000.058000.02190000.01450000.01773000.025000.02331000.0565000.01722000.0460000.03061000.02563000.0-687000.0241000.01673000.03267000.0-1248000.0
Percentage of PaymentsRelatedToTaxWithholdingForShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireBusinessesGross us-gaap:BusinessAcquisition

us-gaap:PaymentsToAcquireBusinessesGross

ttec:Avtex


Payments
Period End2021-04-08
Value490
Percentage of PaymentsToAcquireBusinessesGross100.0

ttec:VoiceFoundryAsean


Payments
Period End2020-11-04
Value15
Percentage of PaymentsToAcquireBusinessesGross0.0

ttec:VoiceFoundryAustralia


Payments
Period End2020-12-31
Value13
Percentage of PaymentsToAcquireBusinessesGross0.0

ttec:Voicefoundry


Payments
Period End2020-08-05
Value34
Percentage of PaymentsToAcquireBusinessesGross0.0

us-gaap:PaymentsToAcquireBusinessesGross us-gaap:BusinessAcquisition, us-gaap:StatementBusinessSegments

ttec:Serendebyte, ttec:TtecDigital


Payments
Period End2021-06-302021-03-312020-09-302020-06-302020-02-07
Value0.00.80.80.89.0
Percentage of PaymentsToAcquireBusinessesGross0.00.00.00.00.0

us-gaap:PaymentsToAcquireBusinessesGross us-gaap:Ownership

ttec:Voicefoundry


Payments
Period End2020-08-05
Value34
Percentage of PaymentsToAcquireBusinessesGross0.0

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312018-12-312018-09-302017-12-312017-09-302016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value4810.2671334-0.8225.2430.00.025341.786460.00.20.20.00.0011.6730.1020.513150.5728.160.217.3041.6520.0360.04.8043730.0046278.4e-05-43.838213430.0120.0
Percentage of PaymentsToAcquireBusinessesNetOfCashAcquired100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.0100.0100.0100.0100.00.0100.00.0

us-gaap:PaymentsToMinorityShareholders

us-gaap:PaymentsToMinorityShareholders


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value3.2042.3852.5333.1773.02.0911.351.351.350.90.90.90.180.9450.90.9450.8550.9451.081.0351.3020.9
Percentage of PaymentsToMinorityShareholders100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromRepaymentsOfLinesOfCredit

us-gaap:ProceedsFromRepaymentsOfLinesOfCredit


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value495-46.060-375.00.041091
Percentage of ProceedsFromRepaymentsOfLinesOfCredit100.0100.0100.0100.00.0100.0100.0

us-gaap:ProceedsFromSaleOfProductiveAssets

us-gaap:ProceedsFromSaleOfProductiveAssets


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302013-12-312013-09-302012-12-312012-09-302011-12-312011-09-30
Value4000.025000.04000.001000.015000.027000.028000.0312000.015000.013000.013000.04000.04000.08000.09000.09000.013000.021000.030000.062000.01000.086000.00000225000.02034000.0-2328000.0
Percentage of ProceedsFromSaleOfProductiveAssets100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0100.0100.0100.0

us-gaap:ProvisionForDoubtfulAccounts

us-gaap:ProvisionForDoubtfulAccounts


Provision
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value135000.021000.0-69000.044000.0445000.0162000.03196000.0226000.0133000.0124000.078000.067000.0252000.061000.0622000.0318000.06000.0218000.0501000.0558000.0353000.053000.0162000.0252000.0106000.0113000.0283000.0-66000.0402000.076000.0-122000.0442000.047960.040.062.0301.000599360.0-642360.0339000.0304000.0
Percentage of ProvisionForDoubtfulAccounts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0

us-gaap:ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome

us-gaap:ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome


Reclassification
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value80000.080000.0147000.0147000.0146000.055000.055000.055000.0112000.0112000.0112000.0130000.0130000.0130000.0804000.0224000.0
Percentage of ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome

us-gaap:ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome


Reclassification
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value0.0720.0720.1320.1320.1320.1310.0510.0490.0490.0490.1010.1010.1010.101-0.8220.1170.1170.117-2.3090.7240.202-0.202-1.5860.2270.208-0.246
Percentage of ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Reclassification
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value-0.072-0.072-0.132-0.132-0.133-0.131-0.051-0.048-0.05-0.049-0.101-0.102-0.1-0.101-0.118-0.117-0.118-0.117-0.053-0.724-0.202-0.2020.2280.2250.2080.2460.269
Percentage of ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent-100.0-100.0-100.0-100.0-100.8-100.0-100.0-98.0-102.0-100.0-100.0-101.0-99.0-100.014.4-100.0-100.9-100.02.3-100.0-100.0100.0-14.499.1100.0-100.00.0

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Reclassification
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value1.3541.0591.2450.5150.0580.110.291-0.793-0.738-1.845-2.371-2.981
Percentage of ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent1880.61470.8943.2390.243.984.0570.6-1618.4-1506.1-3765.3-2347.5-2951.5

us-gaap:AccumulatedOtherComprehensiveIncome


Reclassification
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value1.2820.9871.11320-0.075-0.0210.24-0.841-0.788-1.894-2.472-3.083-3.665-3.994-3.83-3.706-3.087-4.253-5.614-4.903-3.659-3.7553.4362.3851.511.3850.211
Percentage of ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent1780.61370.8843.215153.0-56.8-16.0470.6-1716.3-1608.2-3865.3-2447.5-3052.5-3628.7-3954.5465.9-3167.5-2638.5-3635.0243.1-677.2-1811.41858.9-216.61050.7726.0-563.00.0

us-gaap:AccumulatedTranslationAdjustment


Reclassification
Period End2020-12-31
Value0.0
Percentage of ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent0.0

us-gaap:ReclassificationFromAociCurrentPeriodTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationFromAociCurrentPeriodTax

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLoss


Reclassification
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-31
Value-8000.0-8000.0-15000.0-15000.0-15000.0-6000.0-6000.011000.013000.013000.013000.080000.022000.022000.025000.022000.028000.0
Percentage of ReclassificationFromAociCurrentPeriodTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RelatedPartyTransactionPurchasesFromRelatedParty us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:RelatedPartyTransactionPurchasesFromRelatedParty

ttec:Airmax


Related
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value200000.0300000.0100000.0100000.0100000.0100000.0300000.0200000.0300000.0300000.0200000.0200000.0400000.0300000.0500000.0200000.0200000.0200000.0300000.0200000.0
Percentage of RelatedPartyTransactionPurchasesFromRelatedParty100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RepaymentsOfOtherDebt

us-gaap:RepaymentsOfOtherDebt


Repayments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value1.6511.8712.0172.2461.9562.42.4882.3512.5184.4981.3761.7721.2781.5631.541.4761.811.2150.9161.0920.6640.550.6660.8360.9420.7780.7350.6421.6021.5251.4961.6321.3231.3382.1171.3931.3893450.0006550.4530.5581.0874630.000537
Percentage of RepaymentsOfOtherDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestructuringCharges

us-gaap:RestructuringCharges


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1.7250.4020.71.2330.7930.5380.1750.1830.4280.9611.5322.7161.0340.8494.8976.0063.5930.1690.5023.6880.1140.0880.1850.6220.1980.8091.60.5930.6170.540.2540.7582.5720.8512.1812.44160.0019581.3530.001616-0.0570.739130.0035791.3041.469
Percentage of RestructuringCharges100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestructuringCostsAndAssetImpairmentCharges us-gaap:PropertyPlantAndEquipmentByType, us-gaap:StatementBusinessSegments

us-gaap:RestructuringCostsAndAssetImpairmentCharges

us-gaap:LeaseholdImprovements, ttec:TtecEngage


Restructuring
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value200000.02400000.0900000.0-700000.0700000.0-2600000.00700000.01500000.0000
Percentage of RestructuringCostsAndAssetImpairmentCharges100.0100.0100.0100.0100.0100.00.0100.0100.00.00.00.0

us-gaap:RestructuringReservePeriodIncreaseDecrease

us-gaap:RestructuringReservePeriodIncreaseDecrease


Restructuring
Period End2021-06-302021-03-31
Value100000.0300000.0
Percentage of RestructuringReservePeriodIncreaseDecrease100.0100.0

us-gaap:RestructuringReservePeriodIncreaseDecrease us-gaap:IncomeStatementLocation

us-gaap:CostOfSales


Restructuring
Period End2020-12-312020-09-302020-06-30
Value300000.0100000.02900000.0
Percentage of RestructuringReservePeriodIncreaseDecrease0.00.00.0

us-gaap:RestructuringReservePeriodIncreaseDecrease us-gaap:IncomeStatementLocation, us-gaap:RestructuringCostAndReserve

us-gaap:CostOfSales, ttec:RestructuringReserveDecrease


Restructuring
Period End2020-12-312020-09-30
Value-300000.0-500000.0
Percentage of RestructuringReservePeriodIncreaseDecrease0.00.0

us-gaap:RestructuringReservePeriodIncreaseDecrease us-gaap:RestructuringCostAndReserve

ttec:RestructuringReserveDecrease


Restructuring
Period End2021-06-302021-03-31
Value500000.0100000.0
Percentage of RestructuringReservePeriodIncreaseDecrease500.033.3

us-gaap:RestructuringReserveTranslationAdjustment

us-gaap:RestructuringReserveTranslationAdjustment


Restructuring
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value3000.00-7000.0-12000.0-1000.0-12000.06000.0-58000.0-94000.0-29000.0-20000.0-22000.0-3000.02000.0-15000.0-11000.0-11000.0-55000.0
Percentage of RestructuringReserveTranslationAdjustment100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestructuringReserveTranslationAdjustment us-gaap:RestructuringCostAndReserve

us-gaap:EmployeeSeverance


Restructuring
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-06-302016-03-31
Value00-7000.0-7000.0-4000.0-35000.03000.0-19000.012000.0-58000.0-94000.0-29000.0-20000.0-22000.0-3000.02000.0-11000.0-55000.0
Percentage of RestructuringReserveTranslationAdjustment0.00.0100.058.3400.00.00.0158.3200.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FacilityClosing


Restructuring
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value3000.000-5000.03000.0-4000.09000.07000.0
Percentage of RestructuringReserveTranslationAdjustment100.00.0-0.041.7-300.00.00.0-58.3

us-gaap:RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability

us-gaap:RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability


Right
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value488000.095000.001464000.0320000.0508000.001886000.01657000.02590000.0
Percentage of RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability100.0100.00.0100.0100.0100.00.0100.0100.0100.0

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability


Right
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value4.4553.3620.0390.00.2476.5487.1361.3015.3681.689
Percentage of RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability100.0100.0100.00.0100.0100.0100.0100.0100.0100.0

us-gaap:SeveranceCosts1

us-gaap:SeveranceCosts1


Severance
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-312013-09-302013-06-30
Value0.80.1570.3470.1170.4430.1750.090.3080.4620.2570.1790.1870.204-0.493-0.21.8110.0430.3942.989-0.0720.0880.1850.6220.1980.8091.5860.5930.6170.2540.7082.324
Percentage of SeveranceCosts1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:SeveranceCosts1 us-gaap:StatementBusinessSegments

ttec:TtecDigital


Severance
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-312018-09-30
Value0.8580.00.3470.1140.2070.0510.090.00.082
Percentage of SeveranceCosts1107.20.0100.097.446.729.1100.00.045.8

ttec:TtecEngage


Severance
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-0.0580.1570.00.0030.2360.1240.00.3080.4620.2570.0970.187
Percentage of SeveranceCosts1-7.2100.00.02.653.370.90.0100.0100.0100.054.2100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted

us-gaap:RestrictedStockUnitsRSU


Share
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-03-31
Value-32815.044471.0408810.017970.0112920.061663.029553.010693.014480.0447970.018128.028858.0696090.0624860.0352470.091405.018806.0575550.089252.080000.0373160.046176.0164000.062780.0571060.0122000.0438500.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShortTermLeaseCost us-gaap:IncomeStatementLocation

us-gaap:ShortTermLeaseCost

us-gaap:CostOfSales


Short
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1001000.0966000.0979000.01029000.0883000.0997000.0919000.01107000.01247000.01065000.0
Percentage of ShortTermLeaseCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures

us-gaap:CommonStock


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value74000.082000.02000.053000.085000.0108000.03000.099000.090000.0102000.03000.0143000.055000.0117000.0
Percentage of StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures

us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-2753000.0-3927000.0-65000.0-1238000.0-1408000.0-1810000.0-58000.0-2190000.0-1450000.0-1773000.0-25000.0-2331000.0-565000.0-1722000.0-460000.0-3061000.0-1189000.0-687000.0
Percentage of StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-3978000.0-5291000.0-104000.0-2102000.0-2823000.0-3594000.0-114000.0-3825000.0-2937000.0-3461000.0-62000.0-4712000.0-1462000.0-3662000.0-701000.0-5596000.0-2646000.0-1370000.0
Percentage of StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures144.5134.7160.0169.8200.5198.6196.6174.7202.6195.2248.0202.1258.8212.7152.4182.8222.5199.4

us-gaap:CommonStock


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value1000.01000.0-1000.01000.01000.01000.001000.01000.01000.002000.001000.01000.01000.0
Percentage of StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures-0.0-0.01.5-0.1-0.1-0.1-0.0-0.0-0.1-0.1-0.0-0.1-0.0-0.1-0.2-0.0

us-gaap:TreasuryStockCommon


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value1224000.01363000.040000.0863000.01414000.01783000.056000.01634000.01486000.01687000.037000.02379000.0897000.01939000.0240000.02534000.01456000.0683000.0
Percentage of StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures-44.5-34.7-61.5-69.7-100.4-98.5-96.6-74.6-102.5-95.1-148.0-102.1-158.8-112.6-52.2-82.8-122.5-99.4

us-gaap:StockholdersEquityOther

us-gaap:StockholdersEquityOther


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value24000.0-36000.0-112000.0-130000.0-119000.0-127000.0840000.0-37000.038000.0-55000.09000.0-103000.0-106000.0-108000.0281000.0
Percentage of StockholdersEquityOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockholdersEquityOther us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value24000.0-36000.0-112000.0-130000.0-119000.0-127000.0840000.0-37000.038000.0-55000.09000.0-103000.0-106000.0-108000.0281000.0
Percentage of StockholdersEquityOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:SubleaseIncome us-gaap:IncomeStatementLocation

us-gaap:SubleaseIncome

us-gaap:OtherNonoperatingIncomeExpense


Sublease
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value636000.0676000.0676000.0676000.0616000.0496000.0496000.0496000.0496000.0496000.0
Percentage of SubleaseIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:SellingGeneralAndAdministrativeExpenses


Sublease
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value214000.0228000.0222000.0220000.0212000.0182000.0126000.0126000.0126000.067000.0
Percentage of SubleaseIncome33.633.732.832.534.436.725.425.425.413.5

us-gaap:TaxAdjustmentsSettlementsAndUnusualProvisions

us-gaap:TaxAdjustmentsSettlementsAndUnusualProvisions


Tax
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302017-03-312016-06-30
Value1700000.02300000.01700000.0400000.0100000.01600000.0200000.0100000.0100000.03000000.0900000.0500000.0300000.0-200000.0700000.0-300000.0300000.0
Percentage of TaxAdjustmentsSettlementsAndUnusualProvisions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TemporaryEquityNetIncome

us-gaap:TemporaryEquityNetIncome


Temporary
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-06-30
Value1350000.01698000.0767000.0265000.0560000.0935000.00
Percentage of TemporaryEquityNetIncome100.0100.0100.0100.0100.0100.00.0

us-gaap:ValuationAllowanceDeferredTaxAssetChangeInAmount

us-gaap:ValuationAllowanceDeferredTaxAssetChangeInAmount


Valuation
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-312019-06-302018-12-312017-12-312016-12-312016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-09-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value02400000.01000000.0900000.0300000.02200000.02300000.01500000.0600000.0400000.01000000.0100000.01200000.0-100000.0200000.0300000.0200000.0600000.02000000.0400000.0300000.0900000.01900000.0
Percentage of ValuationAllowanceDeferredTaxAssetChangeInAmount0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:VariableLeaseCost us-gaap:IncomeStatementLocation

us-gaap:VariableLeaseCost

us-gaap:CostOfSales


Variable
Period End2021-03-312020-12-312020-09-302020-06-30
Value318000.02000.01000.0284000.0
Percentage of VariableLeaseCost100.0100.0100.0100.0

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-30
Value569000.0612000.0299000.0242000.0315000.0287000.0366000.0387000.0144000.0385000.0581000.0529000.0488000.0365000.0234000.0348000.0378000.0591000.0739000.0788000.0847000.0760000.0928000.0946000.0767000.0870000.0812000.0587000.0925000.01272000.01261000.0
Percentage of WeightedAverageNumberDilutedSharesOutstandingAdjustment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:EntityNumberOfEmployees

dei:EntityNumberOfEmployees


Entity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value58500.058500.061000.056200.051700.0
Percentage of EntityNumberOfEmployees100.0100.0100.0100.0100.0

dei:EntityNumberOfEmployees us-gaap:Ownership

ttec:Voicefoundry


Entity
Period End2020-08-05
Value60.0
Percentage of EntityNumberOfEmployees0.0

ttec:BasePurchasePriceToAcquireBusinesses

ttec:BasePurchasePriceToAcquireBusinesses


Base
Period End2021-04-08
Value490
Percentage of BasePurchasePriceToAcquireBusinesses100.0

ttec:BusinessAcquisitionFutureValueOfLiabilitiesIncurred us-gaap:BalanceSheetLocation, us-gaap:BusinessAcquisition

ttec:BusinessAcquisitionFutureValueOfLiabilitiesIncurred

ttec:OtherAccruedExpenses, ttec:Voicefoundry


Business
Period End2020-09-30
Value7.4
Percentage of BusinessAcquisitionFutureValueOfLiabilitiesIncurred100.0

us-gaap:OtherNoncurrentLiabilities, ttec:Voicefoundry


Business
Period End2020-09-30
Value3.5
Percentage of BusinessAcquisitionFutureValueOfLiabilitiesIncurred47.3

ttec:BusinessAcquisitionFutureValueOfLiabilitiesIncurred us-gaap:BusinessAcquisition

ttec:VoiceFoundryAsean


Business
Period End2020-11-04
Value2.8
Percentage of BusinessAcquisitionFutureValueOfLiabilitiesIncurred0.0

ttec:VoiceFoundryAustralia


Business
Period End2020-12-31
Value4.4
Percentage of BusinessAcquisitionFutureValueOfLiabilitiesIncurred0.0

ttec:Voicefoundry


Business
Period End2021-06-302021-03-312020-09-302020-08-05
Value1010107.4
Percentage of BusinessAcquisitionFutureValueOfLiabilitiesIncurred0.00.0147.30.0

ttec:BusinessAcquisitionFutureValueOfLiabilitiesIncurred us-gaap:BusinessAcquisition, us-gaap:StatementBusinessSegments

ttec:Voicefoundry, ttec:TtecDigital


Business
Period End2020-08-05
Value19
Percentage of BusinessAcquisitionFutureValueOfLiabilitiesIncurred0.0

ttec:BusinessAcquisitionFutureValueOfLiabilitiesIncurred us-gaap:Ownership

ttec:Voicefoundry


Business
Period End2020-12-312020-08-05
Value107.4
Percentage of BusinessAcquisitionFutureValueOfLiabilitiesIncurred0.00.0

ttec:BusinessAcquisitionFutureValueOfLiabilitiesIncurred us-gaap:Range, us-gaap:BusinessAcquisition

srt:Maximum, ttec:VoiceFoundryAsean


Business
Period End2020-11-04
Value4.4
Percentage of BusinessAcquisitionFutureValueOfLiabilitiesIncurred0.0

ttec:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccruedExpenses us-gaap:BusinessAcquisition

ttec:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccruedExpenses

ttec:Avtex


Business
Period End2021-04-08
Value250000.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccruedExpenses100.0

ttec:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccruedIncomeTaxes us-gaap:BusinessAcquisition

ttec:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccruedIncomeTaxes

ttec:Avtex


Business
Period End2021-04-08
Value332000.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccruedIncomeTaxes100.0

ttec:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNet us-gaap:BusinessAcquisition

ttec:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNet

ttec:VoiceFoundryAsean


Business
Period End2020-11-04
Value-78000.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNet100.0

ttec:DeferredCompensationPlanLiability us-gaap:FairValueByFairValueHierarchyLevel

ttec:DeferredCompensationPlanLiability

us-gaap:FairValueInputsLevel2


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-31
Value272523212017201817161416151313121111101010109.8219.2678.478
Percentage of DeferredCompensationPlanLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ttec:DeferredCompensationPlanLiability us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value23201413109.8219.645-9.272-8.4788.2378.07-7.65-6.8296.1916.015-5.436-5.3055.1814.8083.99
Percentage of DeferredCompensationPlanLiability100.0100.0100.0100.0100.0100.00.00.0-100.00.00.00.00.00.00.00.00.00.00.00.0

ttec:DeferredTaxLiabilitiesContractAcquisitionCosts

ttec:DeferredTaxLiabilitiesContractAcquisitionCosts


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value3.1825.748.5195.3310.02511-11.653-7.847-6.015
Percentage of DeferredTaxLiabilitiesContractAcquisitionCosts100.0100.0100.0100.00.0100.0100.0100.0100.0100.0

ttec:DeferredTaxLiabilitiesDepreciationAndAmortization

ttec:DeferredTaxLiabilitiesDepreciationAndAmortization


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value106.09515120.00.0-7.0351.0670.0
Percentage of DeferredTaxLiabilitiesDepreciationAndAmortization100.0100.0100.0100.00.00.0100.0100.00.0

ttec:EntityWideAccountsReceivableMajorCustomerAmount us-gaap:MajorCustomers

ttec:EntityWideAccountsReceivableMajorCustomerAmount

ttec:Sears


Entity
Period End2021-06-302021-03-312020-12-312020-09-302019-12-312019-09-302019-06-302018-12-31
Value2.72.72.72.72.72.72.52.7
Percentage of EntityWideAccountsReceivableMajorCustomerAmount100.0100.0100.0100.0100.0100.0100.0100.0

ttec:ForeignCurrencyCashFlowHedgeDerivativesMaturityNextTwelvesMonths us-gaap:Currency, us-gaap:DerivativeInstrumentRisk

ttec:ForeignCurrencyCashFlowHedgeDerivativesMaturityNextTwelvesMonths

currency:MXN, us-gaap:ForeignExchangeForward


Foreign
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value44.356.251.153.00.5270.4750.4690.5090.5270.5760.530.5570.5020.4530.410.3720.1720.1720.2370.3
Percentage of ForeignCurrencyCashFlowHedgeDerivativesMaturityNextTwelvesMonths100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

currency:PHP, us-gaap:ForeignExchangeForward


Foreign
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value53.358.354.956.80.5990.5840.5820.5760.6220.6050.6070.5990.6120.5760.6230.5320.30.30.4230.422
Percentage of ForeignCurrencyCashFlowHedgeDerivativesMaturityNextTwelvesMonths120.3103.7107.4107.2113.7122.9124.1113.2118.0105.0114.5107.5121.9127.2152.0143.0174.4174.4178.5140.7

ttec:LeaseLiabilities

ttec:LeaseLiabilities


Lease
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312019-01-01
Value134142152163175180188185175170167
Percentage of LeaseLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ttec:LeaseRightToUseAsset

ttec:LeaseRightToUseAsset


Lease
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312019-01-01
Value116123133147157161168165157154148
Percentage of LeaseRightToUseAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ttec:LettersOfCreditIssuedOutsideLineOfCreditFacility

ttec:LettersOfCreditIssuedOutsideLineOfCreditFacility


Letters
Period End2021-06-302021-03-312020-12-312020-09-30
Value400000.0500000.0800000.0400000.0
Percentage of LettersOfCreditIssuedOutsideLineOfCreditFacility100.0100.0100.0100.0

ttec:LineOfCreditFacilityLettersOfCreditIssued

ttec:LineOfCreditFacilityLettersOfCreditIssued


Line
Period End2021-06-302021-03-312020-12-312020-09-30
Value2800000.02800000.02800000.02600000.0
Percentage of LineOfCreditFacilityLettersOfCreditIssued100.0100.0100.0100.0

ttec:LineOfCreditInitialBorrowingCapacity

ttec:LineOfCreditInitialBorrowingCapacity


Line
Period End2021-06-302021-03-312020-12-312020-09-30
Value1.21.2900900
Percentage of LineOfCreditInitialBorrowingCapacity100.0100.0100.0100.0

ttec:OperatingLossCarryForwardsExpirationDatesYearAfterFive

ttec:OperatingLossCarryForwardsExpirationDatesYearAfterFive


Operating
Period End2020-12-31
Value11
Percentage of OperatingLossCarryForwardsExpirationDatesYearAfterFive100.0

ttec:OperatingLossCarryForwardsExpirationDatesYearFour

ttec:OperatingLossCarryForwardsExpirationDatesYearFour


Operating
Period End2020-12-31
Value4000.0
Percentage of OperatingLossCarryForwardsExpirationDatesYearFour100.0

ttec:OperatingLossCarryForwardsExpirationDatesYearOne

ttec:OperatingLossCarryForwardsExpirationDatesYearOne


Operating
Period End2020-12-31
Value2000.0
Percentage of OperatingLossCarryForwardsExpirationDatesYearOne100.0

ttec:OperatingLossCarryForwardsExpirationDatesYearThree

ttec:OperatingLossCarryForwardsExpirationDatesYearThree


Operating
Period End2020-12-31
Value183000.0
Percentage of OperatingLossCarryForwardsExpirationDatesYearThree100.0

ttec:OperatingLossCarryForwardsExpirationDatesYearTwo

ttec:OperatingLossCarryForwardsExpirationDatesYearTwo


Operating
Period End2020-12-31
Value3000.0
Percentage of OperatingLossCarryForwardsExpirationDatesYearTwo100.0

ttec:Operatinglosscarryforwardsexpirationdatesyearnoexpiration

ttec:Operatinglosscarryforwardsexpirationdatesyearnoexpiration


Operatinglosscarryforwardsexpirationdatesyearnoexpiration
Period End2020-12-31
Value9087000.0
Percentage of Operatinglosscarryforwardsexpirationdatesyearnoexpiration100.0

ttec:PurchasePricePayableAcquiredDuringPeriod us-gaap:BusinessAcquisition

ttec:PurchasePricePayableAcquiredDuringPeriod

ttec:Voicefoundry


Purchase
Period End2020-12-31
Value0.0
Percentage of PurchasePricePayableAcquiredDuringPeriod0.0

ttec:SubLeaseIncomeRollingThereafter us-gaap:StatementScenario

ttec:SubLeaseIncomeRollingThereafter

ttec:SubleaseIncome


Sub
Period End2020-09-30
Value1225000.0
Percentage of SubLeaseIncomeRollingThereafter100.0

ttec:SubleaseFutureMinimumIncomeCurrent us-gaap:StatementScenario

ttec:SubleaseFutureMinimumIncomeCurrent

ttec:SubleaseIncome


Sublease
Period End2020-12-312019-12-31
Value3500000.02976000.0
Percentage of SubleaseFutureMinimumIncomeCurrent100.0100.0

ttec:SubleaseFutureMinimumIncomeDueInRollingCurrent us-gaap:StatementScenario

ttec:SubleaseFutureMinimumIncomeDueInRollingCurrent

ttec:SubleaseIncome


Sublease
Period End2021-06-302021-03-312020-09-30
Value3476000.03500000.03443000.0
Percentage of SubleaseFutureMinimumIncomeDueInRollingCurrent100.0100.0100.0

ttec:SubleaseFutureMinimumIncomeDueInRollingFiveYears us-gaap:StatementScenario

ttec:SubleaseFutureMinimumIncomeDueInRollingFiveYears

ttec:SubleaseIncome


Sublease
Period End2021-06-302021-03-312020-09-30
Value1960000.02695000.02940000.0
Percentage of SubleaseFutureMinimumIncomeDueInRollingFiveYears100.0100.0100.0

ttec:SubleaseFutureMinimumIncomeDueInRollingFourYears us-gaap:StatementScenario

ttec:SubleaseFutureMinimumIncomeDueInRollingFourYears

ttec:SubleaseIncome


Sublease
Period End2021-06-302021-03-312020-09-30
Value2940000.02940000.02852000.0
Percentage of SubleaseFutureMinimumIncomeDueInRollingFourYears100.0100.0100.0

ttec:SubleaseFutureMinimumIncomeDueInRollingThreeYears us-gaap:StatementScenario

ttec:SubleaseFutureMinimumIncomeDueInRollingThreeYears

ttec:SubleaseIncome


Sublease
Period End2021-06-302021-03-312020-09-30
Value2828000.02947000.03293000.0
Percentage of SubleaseFutureMinimumIncomeDueInRollingThreeYears100.0100.0100.0

ttec:SubleaseFutureMinimumIncomeDueInRollingTwoYears us-gaap:StatementScenario

ttec:SubleaseFutureMinimumIncomeDueInRollingTwoYears

ttec:SubleaseIncome


Sublease
Period End2021-06-302021-03-312020-09-30
Value3471000.03488000.03455000.0
Percentage of SubleaseFutureMinimumIncomeDueInRollingTwoYears100.0100.0100.0

ttec:SubleaseFutureMinimumIncomeFiveYears us-gaap:StatementScenario

ttec:SubleaseFutureMinimumIncomeFiveYears

ttec:SubleaseIncome


Sublease
Period End2020-12-31
Value2940000.0
Percentage of SubleaseFutureMinimumIncomeFiveYears100.0

ttec:SubleaseFutureMinimumIncomeFourYears us-gaap:StatementScenario

ttec:SubleaseFutureMinimumIncomeFourYears

ttec:SubleaseIncome


Sublease
Period End2020-12-312019-12-31
Value2905000.0201000.0
Percentage of SubleaseFutureMinimumIncomeFourYears100.0100.0

ttec:SubleaseFutureMinimumIncomeThereafter us-gaap:StatementScenario

ttec:SubleaseFutureMinimumIncomeThereafter

ttec:SubleaseIncome


Sublease
Period End2020-12-31
Value-490000.0
Percentage of SubleaseFutureMinimumIncomeThereafter100.0

ttec:SubleaseFutureMinimumIncomeThreeYears us-gaap:StatementScenario

ttec:SubleaseFutureMinimumIncomeThreeYears

ttec:SubleaseIncome


Sublease
Period End2020-12-312019-12-31
Value3123000.0345000.0
Percentage of SubleaseFutureMinimumIncomeThreeYears100.0100.0

ttec:SubleaseFutureMinimumIncomeTwoYears us-gaap:StatementScenario

ttec:SubleaseFutureMinimumIncomeTwoYears

ttec:SubleaseIncome


Sublease
Period End2020-12-312019-12-31
Value3489000.0621000.0
Percentage of SubleaseFutureMinimumIncomeTwoYears100.0100.0

ttec:SubleaseIncomeTotal us-gaap:StatementScenario

ttec:SubleaseIncomeTotal

ttec:SubleaseIncome


Sublease
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value-14.675-15.571617174.4354.143
Percentage of SubleaseIncomeTotal100.0100.0100.0100.0100.0100.0100.0

ttec:UpFrontCashConsiderationPaidAcquiredEntity us-gaap:BusinessAcquisition, us-gaap:StatementBusinessSegments

ttec:UpFrontCashConsiderationPaidAcquiredEntity

ttec:Voicefoundry, ttec:TtecDigital


Up
Period End2020-08-05
Value48
Percentage of UpFrontCashConsiderationPaidAcquiredEntity100.0

us-gaap:AccountsPayableRelatedPartiesCurrent us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:AccountsPayableRelatedPartiesCurrent

ttec:Airmax


Accounts
Period End2021-06-302021-03-312020-12-312020-09-30
Value77000.0255000.067000.050000.0
Percentage of AccountsPayableRelatedPartiesCurrent100.0100.0100.0100.0

us-gaap:AccountsReceivableGrossCurrent

us-gaap:AccountsReceivableGrossCurrent


Accounts
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value383336355386301285279239254247
Percentage of AccountsReceivableGrossCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedIncomeTaxesNoncurrent

us-gaap:AccruedIncomeTaxesNoncurrent


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value202222222525252728303038373847
Percentage of AccruedIncomeTaxesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivable

us-gaap:AllowanceForDoubtfulAccountsReceivable


Allowance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value5940000.04997000.05067000.05057000.05795000.05402000.05452000.03781000.05495000.05579000.04145000.0921000.0662000.02176000.03425000.03815000.0
Percentage of AllowanceForDoubtfulAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent


Allowance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value5940000.04997000.05067000.05057000.05795000.05402000.05452000.04145000.0921000.0662000.02176000.03425000.03815000.03635000.03559000.0
Percentage of AllowanceForDoubtfulAccountsReceivableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AociLossCashFlowHedgeCumulativeGainLossAfterTax

us-gaap:AociLossCashFlowHedgeCumulativeGainLossAfterTax


Aoci
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value5877000.05717000.08431000.04098000.0163000.0-3621000.04182000.0137000.0-765000.0-5217000.0-8278000.0-11811000.0-17259000.0-15753000.0-15746000.0-32393000.0
Percentage of AociLossCashFlowHedgeCumulativeGainLossAfterTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetsFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:AssetsFairValueDisclosure

us-gaap:FairValueInputsLevel2


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-30
Value7.9237.659115.6920.2040.05.7720.3120.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of AssetsFairValueDisclosure100.0100.0100.0100.0100.00.0100.0100.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AssetsFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


Assets
Period End2020-12-312019-12-312015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value115.7720.00.00.00.02.6190.240.240.240.241915125.9890.507
Percentage of AssetsFairValueDisclosure100.0100.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh us-gaap:Range, us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh

srt:Maximum, ttec:VoiceFoundryAsean


Business
Period End2020-11-04
Value2200000.0
Percentage of BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh100.0

us-gaap:BusinessCombinationContingentConsiderationLiability

us-gaap:BusinessCombinationContingentConsiderationLiability


Business
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302017-03-312016-12-312016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value9.4781818121.82.8696.1342.4562.3632.7512.7460.3991.1781.3931.8131.8084.2067.80213131223242712222216
Percentage of BusinessCombinationContingentConsiderationLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BusinessCombinationContingentConsiderationLiability us-gaap:BalanceSheetLocation, us-gaap:BusinessAcquisition

ttec:OtherAccruedExpenses, ttec:Voicefoundry


Business
Period End2021-03-31
Value7.4
Percentage of BusinessCombinationContingentConsiderationLiability39.1

us-gaap:OtherNoncurrentLiabilities, ttec:VoiceFoundryAsean


Business
Period End2021-03-312020-12-31
Value2.11.7
Percentage of BusinessCombinationContingentConsiderationLiability11.19.4

us-gaap:OtherNoncurrentLiabilities, ttec:Voicefoundry


Business
Period End2021-03-31
Value7.2
Percentage of BusinessCombinationContingentConsiderationLiability38.1

us-gaap:BusinessCombinationContingentConsiderationLiability us-gaap:BusinessAcquisition

ttec:Fcr


Business
Period End2020-09-302020-06-302020-03-312019-12-312019-10-262018-12-31
Value1.81.7852.8696.134100.0
Percentage of BusinessCombinationContingentConsiderationLiability14.199.2100.0100.00.00.0

ttec:VoiceFoundryAcquisitions


Business
Period End2021-06-302021-03-31
Value9.518
Percentage of BusinessCombinationContingentConsiderationLiability100.2100.0

ttec:VoiceFoundryAsean


Business
Period End2021-06-302021-03-312020-12-31
Value2.14.33.9
Percentage of BusinessCombinationContingentConsiderationLiability22.222.721.6

ttec:Voicefoundry


Business
Period End2021-06-302021-03-312020-12-312020-09-30
Value7.4141410
Percentage of BusinessCombinationContingentConsiderationLiability78.177.278.186.0

us-gaap:BusinessCombinationContingentConsiderationLiability us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel3


Business
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-31
Value9.4781818121.7852.8696.1340.00.02.4562.3632.7512.7460.00.3991.1781.3931.8131.8080.04.2067.802131324
Percentage of BusinessCombinationContingentConsiderationLiability100.0100.0100.0100.099.2100.0100.00.00.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0

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

us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring


Business
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value186.1342.3630.3991.8081312-23.953-24.7442712-22.509-21.748-16.99
Percentage of BusinessCombinationContingentConsiderationLiability100.0100.0100.0100.0100.0100.0100.0-100.0-100.0100.0100.0-100.0-95.4-100.0

us-gaap:BusinessCombinationContingentConsiderationLiability us-gaap:Ownership

ttec:Fcr


Business
Period End2020-09-30
Value1.8
Percentage of BusinessCombinationContingentConsiderationLiability14.1

ttec:Voicefoundry


Business
Period End2020-12-31
Value14
Percentage of BusinessCombinationContingentConsiderationLiability78.2

us-gaap:BusinessCombinationContingentConsiderationLiability us-gaap:Ownership, us-gaap:BalanceSheetLocation

ttec:Voicefoundry, ttec:OtherAccruedExpenses


Business
Period End2020-12-31
Value7.4
Percentage of BusinessCombinationContingentConsiderationLiability41.0

ttec:Voicefoundry, us-gaap:OtherNoncurrentLiabilities


Business
Period End2020-12-31
Value6.7
Percentage of BusinessCombinationContingentConsiderationLiability37.2

us-gaap:BusinessCombinationContingentConsiderationLiabilityCurrent

us-gaap:BusinessCombinationContingentConsiderationLiabilityCurrent


Business
Period End2020-09-30
Value6100000.0
Percentage of BusinessCombinationContingentConsiderationLiabilityCurrent100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets

ttec:Avtex


Business
Period End2021-04-08
Value582
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets100.0

ttec:VoiceFoundryAsean


Business
Period End2020-11-04
Value20
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets0.0

ttec:Voicefoundry


Business
Period End2020-08-05
Value47
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets0.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents

ttec:Avtex


Business
Period End2021-04-08
Value18
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents100.0

ttec:VoiceFoundryAsean


Business
Period End2020-11-04
Value1.3
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents0.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets

ttec:Avtex


Business
Period End2021-04-08
Value30
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets100.0

ttec:VoiceFoundryAsean


Business
Period End2020-11-04
Value0.115
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets0.0

ttec:Voicefoundry


Business
Period End2020-08-05
Value0.345
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets0.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables

ttec:Avtex


Business
Period End2021-04-08
Value25
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables100.0

ttec:VoiceFoundryAsean


Business
Period End2020-11-04
Value0.937
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables0.0

ttec:Voicefoundry


Business
Period End2020-08-05
Value3.758
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables0.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable

ttec:Avtex


Business
Period End2021-04-08
Value22
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable100.0

ttec:VoiceFoundryAsean


Business
Period End2020-11-04
Value0.96
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable0.0

ttec:Voicefoundry


Business
Period End2020-08-05
Value0.289
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable0.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesDeferredRevenue us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesDeferredRevenue

ttec:Avtex


Business
Period End2021-04-08
Value51
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesDeferredRevenue100.0

ttec:VoiceFoundryAsean


Business
Period End2020-11-04
Value0.236
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesDeferredRevenue0.0

ttec:Voicefoundry


Business
Period End2020-08-05
Value0.17
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesDeferredRevenue0.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities

ttec:VoiceFoundryAsean


Business
Period End2020-11-04
Value1.013
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles us-gaap:BusinessAcquisition, us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles

ttec:Avtex, us-gaap:CustomerRelationships


Business
Period End2021-04-08
Value123
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles100.0

ttec:Avtex, us-gaap:IntellectualProperty


Business
Period End2021-04-08
Value0.77
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles0.6

ttec:Avtex, us-gaap:TradeNames


Business
Period End2021-04-08
Value5.3
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles4.3

ttec:VoiceFoundryAsean, us-gaap:CustomerRelationships


Business
Period End2020-11-04
Value3.1
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles0.0

ttec:VoiceFoundryAsean, us-gaap:TradeNames


Business
Period End2020-11-04
Value0.3
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles0.0

ttec:Voicefoundry, us-gaap:CustomerRelationships


Business
Period End2020-08-05
Value6.55
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles0.0

ttec:Voicefoundry, us-gaap:NoncompeteAgreements


Business
Period End2020-08-05
Value0.15
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles0.0

ttec:Voicefoundry, us-gaap:TradeNames


Business
Period End2020-08-05
Value0.4
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles0.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities

ttec:Avtex


Business
Period End2021-04-08
Value82
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities100.0

ttec:VoiceFoundryAsean


Business
Period End2020-11-04
Value2.244
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities0.0

ttec:Voicefoundry


Business
Period End2020-08-05
Value1.2
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities0.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets

ttec:Avtex


Business
Period End2021-04-08
Value468000.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment

ttec:VoiceFoundryAsean


Business
Period End2020-11-04
Value274000.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet

ttec:Avtex


Business
Period End2021-04-08
Value499
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet100.0

ttec:VoiceFoundryAsean


Business
Period End2020-11-04
Value18
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet0.0

ttec:Voicefoundry


Business
Period End2020-08-05
Value45
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet0.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet us-gaap:BusinessAcquisition, us-gaap:StatementBusinessSegments

ttec:Voicefoundry, ttec:TtecDigital


Business
Period End2020-08-05
Value67
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet0.0

us-gaap:CashFlowHedgesDerivativeInstrumentsAtFairValueNet us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:CashFlowHedgesDerivativeInstrumentsAtFairValueNet

us-gaap:FairValueInputsLevel2


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-31
Value7.9457.725115.5750.225-4.8775.6740.201-1.055-7.137-11.316-16.163-23.627-21.608-26.256-29.473-32.693-40.153-54.039-48.497-42.381-36.318-45.722-47.424-35.805-30.942-29.169-17.0982.118-15.518-11.485-3.736-2.27818
Percentage of CashFlowHedgesDerivativeInstrumentsAtFairValueNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashFlowHedgesDerivativeInstrumentsAtFairValueNet us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-312012-09-302012-06-302011-12-31
Value7.9457.725115.5750.225-4.8775.6740.201-1.055-7.137-11.316-16.163-23.627-21.608-26.256-29.473-32.693-40.153-54.039-48.497-42.381-36.318-45.722-47.424-35.805-30.942-29.169-17.0982.118-15.518-11.485-3.736-2.27818157.829-7.17
Percentage of CashFlowHedgesDerivativeInstrumentsAtFairValueNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:CommonStockValueOutstanding

us-gaap:CommonStockValueOutstanding


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
Value469000.0468000.0467000.0468000.0467000.0466000.0465000.0465000.0464000.0463000.0462000.0462000.0460000.0460000.0459000.0458000.0458000.0458000.0462000.0468000.0474000.0483000.0485000.0485000.0483000.0484000.0485000.0489000.0492000.0497000.0503000.0504000.0513000.0521000.0522000.0537000.0546000.0556.0566.0563.0566000.0569000.0579000.0622000.0
Percentage of CommonStockValueOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerAssetGross

us-gaap:ContractWithCustomerAssetGross


Contract
Period End2020-12-31
Value6800000.0
Percentage of ContractWithCustomerAssetGross100.0

us-gaap:ContractWithCustomerAssetNet

us-gaap:ContractWithCustomerAssetNet


Contract
Period End2020-12-312019-12-312018-12-312017-12-31
Value43515723
Percentage of ContractWithCustomerAssetNet100.0100.0100.0100.0

us-gaap:ContractWithCustomerAssetNetCurrent

us-gaap:ContractWithCustomerAssetNetCurrent


Contract
Period End2020-12-312019-12-312018-12-312017-12-31
Value25262313
Percentage of ContractWithCustomerAssetNetCurrent100.0100.0100.0100.0

us-gaap:ContractWithCustomerAssetNetNoncurrent

us-gaap:ContractWithCustomerAssetNetNoncurrent


Contract
Period End2020-12-312019-12-312018-12-312017-12-31
Value1825349.654
Percentage of ContractWithCustomerAssetNetNoncurrent100.0100.0100.0100.0

us-gaap:ContractWithCustomerLiability

us-gaap:ContractWithCustomerLiability


Contract
Period End2020-12-312019-12-312018-12-312017-12-31
Value57627831
Percentage of ContractWithCustomerLiability100.0100.0100.0100.0

us-gaap:ContractWithCustomerLiabilityNoncurrent

us-gaap:ContractWithCustomerLiabilityNoncurrent


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312017-12-31
Value221917151719232631339.632
Percentage of ContractWithCustomerLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible

us-gaap:DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible


Decrease
Period End2020-12-31
Value3900000.0
Percentage of DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible100.0

us-gaap:DeferredCompensationLiabilityClassifiedNoncurrent

us-gaap:DeferredCompensationLiabilityClassifiedNoncurrent


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value27252321201720181714
Percentage of DeferredCompensationLiabilityClassifiedNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredCreditsAndOtherLiabilitiesNoncurrent

us-gaap:DeferredCreditsAndOtherLiabilitiesNoncurrent


Deferred
Period End2021-06-302020-12-31
Value1615
Percentage of DeferredCreditsAndOtherLiabilitiesNoncurrent100.0100.0

us-gaap:DeferredIncomeTaxAssetsNet

us-gaap:DeferredIncomeTaxAssetsNet


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value1915151410101315
Percentage of DeferredIncomeTaxAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredIncomeTaxLiabilities


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value49574034183429
Percentage of DeferredIncomeTaxLiabilities100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsDeferredIncome

us-gaap:DeferredTaxAssetsDeferredIncome


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value6.8689.047137.026111616151310
Percentage of DeferredTaxAssetsDeferredIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsDerivativeInstruments

us-gaap:DeferredTaxAssetsDerivativeInstruments


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value1.1871.4212.0353.1371316114.4460.0
Percentage of DeferredTaxAssetsDerivativeInstruments100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsGross


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value19157614775644819389768984
Percentage of DeferredTaxAssetsGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsInvestmentInSubsidiaries

us-gaap:DeferredTaxAssetsInvestmentInSubsidiaries


Deferred
Period End2020-12-312019-12-312018-12-31
Value526000.02435000.00
Percentage of DeferredTaxAssetsInvestmentInSubsidiaries100.0100.00.0

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value20191817201911112115
Percentage of DeferredTaxAssetsOperatingLossCarryforwards100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsOther


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value5.4441.3221.0011.5572.3312.655129.4671311
Percentage of DeferredTaxAssetsOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxCreditCarryforwards

us-gaap:DeferredTaxAssetsTaxCreditCarryforwards


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value2.3831.2630.5490.057.4391010151715
Percentage of DeferredTaxAssetsTaxCreditCarryforwards100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value8.5747.9998.7248.5971110177.8665.3634.72
Percentage of DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value1660000.01442000.01348000.01481000.02489000.03505000.02997000.06566000.06174000.07389000.0
Percentage of DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value4463000.03393000.03301000.02197000.03348000.04860000.04554000.04037000.05787000.06017000.0
Percentage of DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsContingencies

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsContingencies


Deferred
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value600000.01900000.0200000.0200000.0200000.0200000.0100000.0200000.03600000.01100000.01000000.0
Percentage of DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsContingencies100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsDeferredRent

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsDeferredRent


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value20252.6142.3523.3622.52.2011.9031.5861.472
Percentage of DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsDeferredRent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsImpairmentLosses

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsImpairmentLosses


Deferred
Period End2020-12-312019-12-312018-12-312018-03-312017-12-31
Value4064000.04142000.04221000.04200000.00
Percentage of DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsImpairmentLosses100.0100.0100.0100.00.0

us-gaap:DeferredTaxLiabilitiesDerivatives

us-gaap:DeferredTaxLiabilitiesDerivatives


Deferred
Period End2020-12-312019-12-312018-12-312013-12-312012-12-31
Value2959000.01491000.000-7464000.0
Percentage of DeferredTaxLiabilitiesDerivatives100.0100.00.00.0100.0

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value15221515176.082-7.6280.0
Percentage of DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:DeferredTaxLiabilitiesLeasingArrangements

us-gaap:DeferredTaxLiabilitiesLeasingArrangements


Deferred
Period End2020-12-312019-12-312018-12-312014-12-312013-12-312012-12-312011-12-31
Value16210.00.0-0.0120.01-0.023
Percentage of DeferredTaxLiabilitiesLeasingArrangements100.0100.00.00.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DeferredTaxLiabilitiesOther


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value480000.0407000.0187000.0446000.0357000.02490000.0355000.0-600000.0-3423000.0-5349000.0
Percentage of DeferredTaxLiabilitiesOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeAssets us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:DerivativeAssets

us-gaap:FairValueInputsLevel2


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-30
Value7.9237.659115.6920.2040.05.7720.3120.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of DerivativeAssets100.0100.0100.0100.0100.00.0100.0100.00.00.00.00.00.00.00.00.00.00.00.00.0

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

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


Derivative
Period End2020-12-312019-12-312015-06-302014-12-312014-09-302014-06-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value115.7720.00.00.02.3780.00.00.01815125.5890.0
Percentage of DerivativeAssets100.0100.00.00.00.00.00.00.00.00.00.00.00.00.0

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

us-gaap:DerivativeFairValueOfDerivativeNet

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


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312011-12-31
Value5.465.436.9394.52.9622.7143.4671.6451.3660.6190.8140.6440.4240.0690.220.0551.1780.0060.0630.2240.0391.6310.5781.7580.1921.9982.8532.3683.3794.6077.13913112.325
Percentage of DerivativeFairValueOfDerivativeNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ttec:PrepaidsAndOtherCurrentAssets, us-gaap:ForeignExchangeContract, us-gaap:FairValueHedging, us-gaap:Nondesignated


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312011-12-31
Value0.0290.040.1030.1320.0730.2050.2590.2870.2360.060.8391.6171.01.6030.3550.2922.0051.6060.1992.5946.5542.4890.0040.0470.9040.7970.0772.4720.1420.0970.022.3410.2370.0110.012
Percentage of DerivativeFairValueOfDerivativeNet0.50.71.52.92.75.915.721.038.17.4130.3381.41449.3728.6645.50.00.0136.33316.74117.52925.96382.10.28.151.4415.13.986.66.02.90.432.81.70.10.5

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


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312011-12-31
Value2.7162.6574.5283.2792.2961.3883.5251.6241.830.6490.2150.4910.760.3930.5940.4460.0130.4560.5460.460.0660.0790.0020.2280.3891.1848.9152.5291.4392.9712.6348.487.6191.119
Percentage of DerivativeFairValueOfDerivativeNet49.748.965.372.977.551.1101.798.7134.0104.826.476.21101.4178.61080.00.00.07600.0866.7205.4169.24.80.313.0202.659.3312.5106.842.664.536.961.266.748.1

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


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value-0.129-0.156-0.073-1.23-2.845-4.811-1.223-2.552-3.512-6.255-8.861-12.005-15.968-14.937-15.603-17.071-17.296-19.24-23.503-22.884-20.196-17.063-20.088-20.006-14.4-13.394-12.68-8.671-4.87-8.346-4.595-0.157
Percentage of DerivativeFairValueOfDerivativeNet-2.4-2.9-1.1-27.3-96.0-177.3-35.3-155.1-257.1-1010.5-1088.6-1864.1-3766.0-21647.8-7092.3-31038.20.00.0-1995.2-381400.0-32057.1-7617.4-51507.7-1226.6-2491.3-761.9-6604.2-434.0-170.7-352.4-136.0-1.4

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


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value-0.051-0.106-0.118-0.015-0.021-0.464-0.107-0.148-0.096-0.237-0.104-0.019-0.285-0.223-0.133-0.447-0.121-0.061-0.866-2.475-0.288-0.061-0.116-3.945-1.871-0.197-0.005-2.585-0.321-0.319-0.815-0.476
Percentage of DerivativeFairValueOfDerivativeNet-0.9-2.0-1.7-0.3-0.7-17.1-3.1-9.0-7.0-38.3-12.8-3.0-67.2-323.2-60.5-812.70.00.0-73.5-41250.0-457.1-27.2-297.4-241.9-323.7-11.2-2.6-129.4-11.3-13.5-24.1-4.2

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


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312011-12-31
Value-0.102-0.206-0.004-0.974-2.188-4.168-0.095-0.516-0.739-2.15-3.484-5.293-8.083-7.5-11.266-13.051-15.843-20.926-31.714-26.075-22.794-19.939-25.739-29.128-21.985-19.534-17.07-11.609-4.78-12.069-11.708-8.159-9.215-0.067-0.065-2.786
Percentage of DerivativeFairValueOfDerivativeNet-1.9-3.8-0.1-21.6-73.9-153.6-2.7-31.4-54.1-347.3-428.0-821.9-1906.4-10869.6-5120.9-23729.10.00.0-2692.2-434583.3-36181.0-8901.3-65997.4-1785.9-3803.6-1111.1-8890.6-581.0-167.5-509.7-346.5-177.1-129.1-0.5-0.6-119.8

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

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


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value7.9457.725115.5750.225-4.8775.6740.201-1.055-7.137-11.316-16.163-23.627-21.608-26.256-29.473-32.693-40.153-54.039-48.497-42.381-36.318-45.722-47.424-35.805-30.942-29.169-17.0982.118-15.518-11.485-3.736-2.2782218157.829-7.17
Percentage of DerivativeFairValueOfDerivativeNet145.5142.3164.1123.97.6-179.7163.712.2-77.2-1153.0-1390.2-2509.8-5572.4-31315.9-11934.5-53587.30.00.0-4587.4-808283.3-67271.4-16213.4-117235.9-2907.7-6194.6-1760.1-15192.2-855.874.2-655.3-339.9-81.1-31.9159.0164.80.00.0-308.4

us-gaap:ForeignExchangeContract, us-gaap:FairValueHedging, us-gaap:Nondesignated


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value-0.022-0.066-0.0150.117-0.021-0.3910.0980.1110.191-0.001-0.0440.821.3320.7771.47-0.0920.1711.9440.74-2.2762.3066.4932.373-3.941-1.8240.7070.792-2.5082.151-0.177-0.718-0.412.298-0.118-0.4650.1750.9-0.329
Percentage of DerivativeFairValueOfDerivativeNet-0.4-1.2-0.22.6-0.7-14.42.86.714.0-0.2-5.4127.3314.21126.1668.2-167.30.00.062.8-37933.33660.32898.76084.6-241.6-315.640.2412.5-125.575.4-7.5-21.2-8.932.2-0.9-4.10.00.0-14.2

us-gaap:DerivativeFairValueOfDerivativeNet us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel2


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-31
Value7.9237.659115.6920.204-5.2685.7720.312-0.864-7.138-11.36-15.343-22.295-20.831-24.786-29.565-32.522-38.266-53.446-51.019-40.427-30.301-44.0-52.28-38.738-31.545-29.817-21.1872.378-17.683-14.471-6.58-2.44615
Percentage of DerivativeFairValueOfDerivativeNet145.1141.0163.9126.56.9-194.1166.519.0-63.3-1153.2-1395.6-2382.5-5258.3-30189.9-11266.4-53754.50.00.0-4537.0-850316.7-64169.8-13527.2-112820.5-3205.4-6702.1-1794.4-15529.7-1060.483.4-746.7-428.3-142.8-34.3132.1

us-gaap:DerivativeFairValueOfDerivativeNet us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-312012-09-302012-06-302011-12-31
Value7.9237.659115.6920.204-5.2685.7720.312-0.864-7.138-11.36-15.343-22.295-20.831-24.786-29.565-32.522-38.266-53.446-51.019-40.427-30.301-44.0-52.28-38.738-31.545-29.817-21.1872.378-17.683-14.471-6.58-2.44615125.589-9.762
Percentage of DerivativeFairValueOfDerivativeNet145.1141.0163.9126.56.9-194.1166.519.0-63.3-1153.2-1395.6-2382.5-5258.3-30189.9-11266.4-53754.50.00.0-4537.0-850316.7-64169.8-13527.2-112820.5-3205.4-6702.1-1794.4-15529.7-1060.483.4-746.7-428.3-142.8-34.3132.10.00.0-419.9

us-gaap:DerivativeNotionalAmount

us-gaap:DerivativeNotionalAmount


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value262735327.412641029770
Percentage of DerivativeNotionalAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeNotionalAmount us-gaap:Currency, us-gaap:DerivativeInstrumentRisk

currency:CAD, us-gaap:ForeignExchangeForward


Derivative
Period End2021-06-302021-03-312020-12-312020-09-30
Value0.351.42.453.5
Percentage of DerivativeNotionalAmount1.35.06.910.7

currency:MXN, us-gaap:ForeignExchangeForward


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value1204100911591115122113711299116211191091
Percentage of DerivativeNotionalAmount4511.23631.33266.23400.916500.011334.72014.71139.71144.71550.4

currency:PHP, us-gaap:ForeignExchangeForward


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value7512564567256565695562757715631162376710
Percentage of DerivativeNotionalAmount28134.820305.818943.720015.293986.551859.511961.26187.36377.39531.2

us-gaap:DerivativeNotionalAmount us-gaap:DerivativeInstrumentRisk

us-gaap:ForeignExchangeForward


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value200155184178188181209175175188
Percentage of DerivativeNotionalAmount750.8559.9520.3545.72547.31499.0324.3172.0179.7268.0

us-gaap:DerivativeNotionalAmount us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship

us-gaap:FairValueHedging


Derivative
Period End2020-12-312019-12-312018-12-31
Value356470
Percentage of DerivativeNotionalAmount100.0100.0100.0

us-gaap:DividendsPayableCurrentAndNoncurrent

us-gaap:DividendsPayableCurrentAndNoncurrent


Dividends
Period End2021-03-312020-09-302020-03-312019-09-302019-03-312018-09-302018-03-312017-09-302017-03-312016-09-302016-03-312015-09-30
Value2018151413121211109.3428.9238.713
Percentage of DividendsPayableCurrentAndNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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
Value1561611631641191051141111011018388758583858178667160697171746970686963806768627169710.0700190.07150.07300879787267
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:EmployeeRelatedLiabilitiesCurrent us-gaap:BusinessAcquisition

ttec:Avtex


Employee
Period End2021-04-08
Value4.325
Percentage of EmployeeRelatedLiabilitiesCurrent0.0

ttec:VoiceFoundryAsean


Employee
Period End2020-11-04
Value0.113
Percentage of EmployeeRelatedLiabilitiesCurrent0.0

ttec:Voicefoundry


Employee
Period End2020-08-05
Value0.741
Percentage of EmployeeRelatedLiabilitiesCurrent0.0

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized us-gaap:AwardType

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized

us-gaap:RestrictedStockUnitsRSU


Employee
Period End2021-06-302021-03-312020-12-312020-09-302016-12-312015-12-312014-12-312014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value2728252620282723252528302426
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EquityMethodInvestmentOwnershipPercentage us-gaap:BusinessAcquisition

us-gaap:EquityMethodInvestmentOwnershipPercentage

ttec:Cafex


Equity
Period End2020-12-312019-06-302018-12-312018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value17.80.1780.1720.1720.1720.1720.1720.1680.170.172
Percentage of EquityMethodInvestmentOwnershipPercentage100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EquityMethodInvestmentOwnershipPercentage us-gaap:RelatedPartyTransactionsByRelatedParty

ttec:Cafex


Equity
Period End2020-09-30
Value17.8
Percentage of EquityMethodInvestmentOwnershipPercentage0.0

us-gaap:FairValueHedgesAtFairValueNet us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueHedgesAtFairValueNet

us-gaap:FairValueInputsLevel2


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-31
Value-22000.0-66000.0-15000.0117000.0-21000.0-391000.098000.0111000.0191000.0-1000.0-44000.0820000.01332000.0777000.01470000.0-92000.0171000.01944000.0740000.0-2276000.02306000.06493000.02373000.0-3941000.0-1824000.0707000.0792000.0-2508000.02151000.0-177000.0-718000.0-410000.02298000.0-465000.0
Percentage of FairValueHedgesAtFairValueNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueHedgesAtFairValueNet us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-312012-09-302012-06-302011-12-31
Value-22000.0-66000.0-15000.0117000.0-21000.0-391000.098000.0111000.0191000.0-1000.0-44000.0820000.01332000.0777000.01470000.0-92000.0171000.01944000.0740000.0-2276000.02306000.06493000.02373000.0-3941000.0-1824000.0707000.0792000.0-2508000.02151000.0-177000.0-718000.0-410000.02298000.0-465000.0175000.0900000.0-329000.0
Percentage of FairValueHedgesAtFairValueNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:FinanceLeaseLiability

us-gaap:FinanceLeaseLiability


Finance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-31
Value8.2469.32410121314161819
Percentage of FinanceLeaseLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityCurrent

us-gaap:FinanceLeaseLiabilityCurrent


Finance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312019-01-01
Value4676000.05558000.06193000.06757000.06987000.07089000.07470000.07917000.07861000.07730000.08770000.0
Percentage of FinanceLeaseLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityNoncurrent

us-gaap:FinanceLeaseLiabilityNoncurrent


Finance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312019-01-01
Value3.573.7664.7636.046.4237.6718.89610101010
Percentage of FinanceLeaseLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsDue

us-gaap:FinanceLeaseLiabilityPaymentsDue


Finance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-31
Value8.3699.51611131315161819
Percentage of FinanceLeaseLiabilityPaymentsDue100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueInNextRollingTwelveMonths

us-gaap:FinanceLeaseLiabilityPaymentsDueInNextRollingTwelveMonths


Finance
Period End2021-06-302021-03-312020-09-30
Value4675000.05609000.06808000.0
Percentage of FinanceLeaseLiabilityPaymentsDueInNextRollingTwelveMonths100.0100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueInRollingYearFive

us-gaap:FinanceLeaseLiabilityPaymentsDueInRollingYearFive


Finance
Period End2020-09-30
Value13000.0
Percentage of FinanceLeaseLiabilityPaymentsDueInRollingYearFive100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueInRollingYearFour

us-gaap:FinanceLeaseLiabilityPaymentsDueInRollingYearFour


Finance
Period End2021-06-302021-03-312020-09-30
Value230000.0355000.0852000.0
Percentage of FinanceLeaseLiabilityPaymentsDueInRollingYearFour100.0100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueInRollingYearThree

us-gaap:FinanceLeaseLiabilityPaymentsDueInRollingYearThree


Finance
Period End2021-06-302021-03-312020-09-30
Value1335000.01402000.01849000.0
Percentage of FinanceLeaseLiabilityPaymentsDueInRollingYearThree100.0100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueInRollingYearTwo

us-gaap:FinanceLeaseLiabilityPaymentsDueInRollingYearTwo


Finance
Period End2021-06-302021-03-312020-09-30
Value2129000.02150000.03552000.0
Percentage of FinanceLeaseLiabilityPaymentsDueInRollingYearTwo100.0100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:FinanceLeaseLiabilityPaymentsDueNextTwelveMonths


Finance
Period End2020-12-312019-12-31
Value6237000.07594000.0
Percentage of FinanceLeaseLiabilityPaymentsDueNextTwelveMonths100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFour

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFour


Finance
Period End2020-12-312019-12-31
Value579000.01109000.0
Percentage of FinanceLeaseLiabilityPaymentsDueYearFour100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueYearThree

us-gaap:FinanceLeaseLiabilityPaymentsDueYearThree


Finance
Period End2020-12-312019-12-31
Value1631000.02139000.0
Percentage of FinanceLeaseLiabilityPaymentsDueYearThree100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueYearTwo

us-gaap:FinanceLeaseLiabilityPaymentsDueYearTwo


Finance
Period End2020-12-312019-12-31
Value2740000.05587000.0
Percentage of FinanceLeaseLiabilityPaymentsDueYearTwo100.0100.0

us-gaap:FinanceLeaseLiabilityUndiscountedExcessAmount

us-gaap:FinanceLeaseLiabilityUndiscountedExcessAmount


Finance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value123000.0192000.0231000.0277000.098000.0360000.0394000.0
Percentage of FinanceLeaseLiabilityUndiscountedExcessAmount100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseRightOfUseAsset

us-gaap:FinanceLeaseRightOfUseAsset


Finance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312019-01-01
Value9.72410121414161819191918
Percentage of FinanceLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseWeightedAverageDiscountRatePercent

us-gaap:FinanceLeaseWeightedAverageDiscountRatePercent


Finance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value1.751.721.641.570.0160.01540.0143
Percentage of FinanceLeaseWeightedAverageDiscountRatePercent100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value11211580923051
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization ttec:FiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClass

ttec:CustomerRelationshipsAccumulatedAmortization


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value-68.769-54.653-43.223-33.56-25.943-30.18
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization-61.4-47.3-53.4-36.4-84.3-58.9

ttec:OtherIntangibleAssetsAccumulatedAmortization


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value-7.223-4.669-3.968-3.913-3.978-8.755
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization-6.4-4.0-4.9-4.2-12.9-17.1

us-gaap:CustomerRelationships