TRIP


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

Table of contents



us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities, us-gaap:AwardType

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:AllocatedShareBasedCompensationExpense
us-gaap:AwardType
us-gaap:ConsolidationItems
us-gaap:IncomeStatementLocation

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization

us-gaap:CostsAndExpenses

us-gaap:GeneralAndAdministrativeExpense
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeTaxExpenseBenefit

us-gaap:InterestExpense
us-gaap:DebtInstrument
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:LongtermDebtType

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:NonoperatingIncomeExpense

us-gaap:OperatingIncomeLoss

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax
us-gaap:StatementEquityComponents

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:ProfitLoss

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

us-gaap:Revenues

us-gaap:SellingAndMarketingExpense

us-gaap:Assets

us-gaap:Liabilities

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:AssetsCurrent

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:AccountsReceivableNetCurrent

us-gaap:PrepaidExpenseAndOtherAssetsCurrent

us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:AmortizationOfIntangibleAssets

us-gaap:PropertyPlantAndEquipmentNet
us-gaap:PropertyPlantAndEquipmentByType
us-gaap:StatementGeographical

us-gaap:Goodwill
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:StatementBusinessSegments

us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:FiniteLivedIntangibleAssetsNet
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OtherAssetsNoncurrent

us-gaap:AccountsPayableCurrent

us-gaap:AccruedIncomeTaxesCurrent

us-gaap:AccruedLiabilitiesCurrent
us-gaap:RestructuringCostAndReserve

us-gaap:ContractWithCustomerLiabilityCurrent

us-gaap:LiabilitiesCurrent

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OtherAccruedLiabilitiesCurrent
us-gaap:FinancialInstrument
us-gaap:LongTermDebt
us-gaap:FinancialInstrument, us-gaap:LongtermDebtType

us-gaap:LongTermDebtNoncurrent
us-gaap:DebtInstrument
us-gaap:DebtInstrument, us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:LongtermDebtType

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:OperatingLeaseLiability

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax
us-gaap:StatementEquityComponents

us-gaap:TreasuryStockValue

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:ProfitLoss

us-gaap:ShareBasedCompensation

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:PaymentsForRepurchaseOfCommonStock
us-gaap:DebtInstrument, us-gaap:SubsequentEventType
us-gaap:DebtInstrumentInterestRateStatedPercentage
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod

us-gaap:DeferredTaxAssetsNet
us-gaap:DebtInstrument

us-gaap:UnrecognizedTaxBenefits

us-gaap:DeferredTaxAssetsValuationAllowance

trip:AdjustedEarningsBeforeInterestTaxesDepreciationAndAmortization
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:StatementBusinessSegments

trip:AdjustmentsToAdditionalPaidInCapitalPurchaseOfCappedCalls
us-gaap:StatementEquityComponents
us-gaap:DebtInstrument, us-gaap:StatementEquityComponents
trip:CommonStockSharesCoveredUnderCappedCallTransactions
us-gaap:RelatedPartyTransactionsByRelatedParty
trip:CommonStockSharesHeldByRelatedParty
us-gaap:RelatedPartyTransactionsByRelatedParty, us-gaap:StatementClassOfStock

trip:ContractWithCustomerLiabilityRevenueRefunded
us-gaap:Range, us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities, us-gaap:LongtermDebtType
trip:DebtInstrumentConvertibleCappedCallsInitialCapPrice
us-gaap:CreditFacility, us-gaap:LongtermDebtType, us-gaap:VariableRate
trip:DebtInstrumentFloorInterestRate
us-gaap:DebtInstrument
trip:DebtInstrumentIssuedPricePercentageOfPrincipalAmountRepurchased
us-gaap:DebtInstrument
trip:DebtInstrumentPrincipalAmountDenominationForConversionIntoCommonStock
us-gaap:DebtInstrument, us-gaap:DebtInstrumentRedemptionPeriod
us-gaap:Range, us-gaap:IncomeTaxAuthorityName, us-gaap:SubsequentEventType, us-gaap:TaxPeriod
trip:EstimatedPotentialIncomeTaxExpenseIncrease
us-gaap:Range, us-gaap:IncomeTaxAuthorityName, us-gaap:TaxPeriod

trip:FinanceLeasePrincipalPaymentsAndOtherFinancingActivities
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
trip:GoodwillAllocationToNewSegment
us-gaap:ConsolidationItems
trip:GoodwillDisposedDuringPeriod
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:UnusualRiskOrUncertaintyByNature
trip:GovernmentGrantsAndOtherAssistanceBenefitsRecognized

trip:IncomeTaxBenefitsAssociatedWithExerciseSettlementOfStockBasedAwards
us-gaap:UnusualRiskOrUncertaintyByNature
trip:IncomeTaxExpenseBenefitDueToCaresAct

trip:IncreaseDecreaseInDeferredCustomerAdvances

trip:IncreaseDecreaseInDeferredCustomerPrepayments
us-gaap:UnusualRiskOrUncertaintyByNature
trip:IncrementalAllowanceForExpectedUncollectibleAmountsOfAccountsReceivableAndContractAssets

trip:NetOfTaxFromPurchaseOfCappedCalls
us-gaap:RelatedPartyTransactionsByRelatedParty
trip:PercentOfCommonStockHeldByRelatedPartyIfClassBConverted
us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType
trip:PercentageOfNotesReceivableDueInFiveYears
us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType
trip:PercentageOfNotesReceivableDueInTenYears
us-gaap:UnusualRiskOrUncertaintyByNature
trip:ProceedsFromGovernmentGrantsAndOtherAssistanceBenefitsReceived

trip:PurchaseOfCappedCallsInConnectionWith2026SeniorNotes
us-gaap:DebtInstrument
us-gaap:RelatedPartyTransactionsByRelatedParty
trip:RelatedPartyVotingRightsPercentCurrent
us-gaap:MajorCustomers, us-gaap:Range, us-gaap:IncomeTaxAuthorityName, us-gaap:TaxPeriod
trip:TaxAdjustmentsIncreaseDecreaseInIncomeTaxExpense

us-gaap:AdjustmentForAmortization

us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation
us-gaap:StatementEquityComponents
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:AdvertisingExpense

us-gaap:AllocatedShareBasedCompensationExpenseNetOfTax

us-gaap:ContractWithCustomerLiabilityRevenueRecognized
us-gaap:CreditFacility, us-gaap:LongtermDebtType, us-gaap:VariableRate
us-gaap:DebtInstrumentBasisSpreadOnVariableRate1
us-gaap:DebtInstrument
us-gaap:DebtInstrumentConvertibleConversionRatio1
us-gaap:DebtInstrument, us-gaap:DebtInstrumentRedemptionPeriod
us-gaap:DebtInstrumentRedemptionPricePercentage
us-gaap:PropertyPlantAndEquipmentByType
us-gaap:Depreciation

us-gaap:DepreciationAndAmortization
us-gaap:ConsolidationItems

us-gaap:DerivativeGainLossOnDerivativeNet

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense

us-gaap:FinanceLeasePrincipalPayments

us-gaap:ForeignCurrencyTransactionGainLossBeforeTax

us-gaap:GainLossOnSaleOfBusiness

us-gaap:GoodwillImpairmentLoss
us-gaap:ConsolidationItems
us-gaap:StatementGeographical
us-gaap:ConsolidationItems
us-gaap:GoodwillOtherIncreaseDecrease
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:IncomeLossFromEquityMethodInvestments

us-gaap:IncomeTaxReconciliationStateAndLocalIncomeTaxes

us-gaap:IncreaseDecreaseInAccountsReceivableAndOtherOperatingAssets

us-gaap:IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities

us-gaap:IncreaseDecreaseInContractWithCustomerLiability

us-gaap:IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable

us-gaap:InformationTechnologyAndDataProcessing

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

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent

us-gaap:OtherNoncashIncomeExpense

us-gaap:OtherOperatingIncomeExpenseNet

us-gaap:PaymentOfFinancingAndStockIssuanceCosts
us-gaap:RestructuringCostAndReserve
us-gaap:PaymentsForRestructuring
us-gaap:CreditFacility
us-gaap:PaymentsOfDebtIssuanceCosts
us-gaap:DebtInstrument

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation
us-gaap:DebtInstrument
us-gaap:ProceedsFromDebtNetOfIssuanceCosts

us-gaap:ProceedsFromIssuanceOfSeniorLongTermDebt

us-gaap:ProceedsFromIssuanceOrSaleOfEquity
us-gaap:CreditFacility
us-gaap:ProceedsFromLinesOfCredit

us-gaap:ProvisionForDoubtfulAccounts

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax
us-gaap:CreditFacility
us-gaap:RepaymentsOfLinesOfCredit

us-gaap:RestructuringAndRelatedCostIncurredCost
us-gaap:RestructuringCostAndReserve

us-gaap:RestructuringCharges
us-gaap:ConsolidationItems
us-gaap:RestructuringCostAndReserve
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
us-gaap:PlanName
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
us-gaap:AwardType
us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1
us-gaap:AwardType
us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised
us-gaap:StatementEquityComponents

us-gaap:TreasuryStockAcquiredAverageCostPerShare

us-gaap:TreasuryStockValueAcquiredCostMethod
us-gaap:StatementEquityComponents
us-gaap:StatementClassOfStock
dei:EntityCommonStockSharesOutstanding

trip:AccountsReceivableAndContractAssetsNetCurrent

trip:DeferredCustomerAdvancesCurrent

trip:DeferredCustomerPrepaymentsCurrent

trip:DeferredTaxAssetsForeignAdvertisingSpend

trip:DeferredTaxAssetsInterestCarryforward

trip:DeferredTaxAssetsLeaseFinancingObligation

trip:DeferredTaxLiabilitiesBuilding
us-gaap:BalanceSheetLocation, us-gaap:UnusualRiskOrUncertaintyByNature
trip:GovernmentGrantsAndOtherAssistanceBenefitsReceivable
us-gaap:StatementGeographical
trip:IncomeTaxesReceivableNetOperatingLossCARESAct

trip:LeaseAssetsNoncurrent

trip:LeaseLiabilities

trip:LeaseLiabilitiesCurrent

trip:LeaseLiabilitiesNoncurrent

trip:NonMarketableInvestments

trip:NumberOfHotelsAndAccommodationsReviewsAndOpinions

trip:NumberOfRestaurantReviewsAndOpinions

trip:PercentageOfDirectorsElectedByCommonStockHolders

trip:UndistributedEarningsOfForeignSubsidiariesNotToBePermanentlyReinvested

trip:UnrecognizedTaxBenefitsIncludingInterestAccrued
us-gaap:BalanceSheetLocation
us-gaap:AccruedBonusesCurrentAndNoncurrent

us-gaap:AccruedIncomeTaxesNoncurrent

us-gaap:AccruedMarketingCostsCurrent
us-gaap:ValuationAllowancesAndReservesType
us-gaap:AllowanceForDoubtfulAccountsReceivable

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent

us-gaap:AllowanceForNotesAndLoansReceivableNoncurrent

us-gaap:CashAndCashEquivalentsFairValueDisclosure
us-gaap:PlanName
us-gaap:CommonStockCapitalSharesReservedForFutureIssuance

us-gaap:ContractWithCustomerAssetNetCurrent

us-gaap:ContractWithCustomerRefundLiabilityCurrent

us-gaap:ContractualObligation
us-gaap:OtherCommitments

us-gaap:ContractualObligationDueAfterFifthYear

us-gaap:ContractualObligationDueInFourthAndFifthYear
us-gaap:OtherCommitments

us-gaap:ContractualObligationDueInNextTwelveMonths
us-gaap:OtherCommitments

us-gaap:ContractualObligationDueInSecondAndThirdYear
us-gaap:OtherCommitments
us-gaap:DebtInstrument
us-gaap:DebtInstrumentCarryingAmount
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:FinancialInstrument
us-gaap:DebtInstrument, us-gaap:SubsequentEventType
us-gaap:DebtInstrumentFaceAmount
us-gaap:CreditFacility, us-gaap:IncomeStatementLocation, us-gaap:LongtermDebtType
us-gaap:DeferredFinanceCostsNet
us-gaap:CreditFacility, us-gaap:LongtermDebtType
us-gaap:DebtInstrument
us-gaap:DebtInstrument, us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:LongtermDebtType
us-gaap:FinancialInstrument
us-gaap:DeferredFinanceCostsNoncurrentGross
us-gaap:FinancialInstrument, us-gaap:LongtermDebtType

us-gaap:DeferredIncomeTaxAssetsNet

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost

us-gaap:DeferredTaxAssetsTaxDeferredExpenseOther

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DeferredTaxLiabilitiesPrepaidExpenses

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment
us-gaap:DebtInstrument
us-gaap:DerivativeCapPrice

us-gaap:DerivativeFairValueOfDerivativeAsset

us-gaap:EmployeeRelatedLiabilitiesCurrent
us-gaap:AwardType
us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions
us-gaap:AwardType
us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions

us-gaap:EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:BalanceSheetLocation
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:BalanceSheetLocation
us-gaap:EquityMethodInvestments

us-gaap:EquitySecuritiesWithoutReadilyDeterminableFairValueAmount

us-gaap:FinanceLeaseLiability

us-gaap:FinanceLeaseLiabilityCurrent

us-gaap:FinanceLeaseLiabilityNoncurrent

us-gaap:FinanceLeaseLiabilityPaymentsDue

us-gaap:FinanceLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:FinanceLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFive

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFour

us-gaap:FinanceLeaseLiabilityPaymentsDueYearThree

us-gaap:FinanceLeaseLiabilityPaymentsDueYearTwo

us-gaap:FinanceLeaseLiabilityUndiscountedExcessAmount

us-gaap:FinanceLeaseRightOfUseAsset

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo

us-gaap:FiniteLivedIntangibleAssetsGross
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:GoodwillImpairedAccumulatedImpairmentLoss

us-gaap:IncomeTaxReceivable
us-gaap:StatementGeographical

us-gaap:IncomeTaxesReceivable

us-gaap:InterestPayableCurrent
us-gaap:BalanceSheetLocation, us-gaap:LongtermDebtType
us-gaap:DebtInstrument
us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths
us-gaap:CreditFacility, us-gaap:LongtermDebtType
us-gaap:LettersOfCreditOutstandingAmount
us-gaap:CreditFacility, us-gaap:LongtermDebtType, us-gaap:TypeOfArrangement
us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity
us-gaap:DebtInstrument, us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:NotesPayableFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:LongtermDebtType

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

us-gaap:OtherSundryLiabilitiesNoncurrent

us-gaap:RestructuringReserveCurrent
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice
us-gaap:AwardType
us-gaap:SharePrice
us-gaap:AwardType, us-gaap:PlanName
us-gaap:DebtInstrument
us-gaap:AwardType
us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueNonvested
us-gaap:AwardType
us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1

us-gaap:StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1

us-gaap:UndistributedEarningsOfForeignSubsidiaries

us-gaap:UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued

us-gaap:UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued

us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate

Plots across concepts


IncomeStatement
Income Loss From Continuing Operations 
Before Income Taxes Extraordinary Items Noncontrolling Interest
Expenses
Income Tax Expense Benefit
Balance Sheet
Operating Lease Right Of Use Asset
Assets
Operating Lease Right Of Use Asset
Current Assets
Prepaid Expense And Other Assets Current
NonCurrent Assets
Deferred Income Tax Assets Net
PropertyPlantAndEquipmentNet
Property Plant And Equipment Net
Liabilities
Operating Lease Liability
Current Liabilities
Accrued Income Taxes Current
Noncurrent Liabilities
Deferred Income Tax Liabilities Net
Stockholders Equity
Accumulated Other Comprehensive Income Loss Net Of Tax
CashFlow
Net Income Loss
NetCashProvidedByUsedInOperatingActivities
Net Income Loss
NetCashProvidedByUsedInInvestingActivities
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInFinancingActivities
Net Cash Provided By Used In Financing Activities
Shares
Weighted Average Number Of Diluted Shares Outstanding
OperatingLeaseLiability
Operating Lease Liability Current
NonoperatingIncomeExpense
Nonoperating Income Expense
LesseeOperatingLeaseLiabilityPaymentsDue
Lessee Operating Lease Liability Undiscounted Excess Amount
FiniteLivedIntangibleAssets
Finite Lived Intangible Assets Net
AccountsReceivable
Allowance For Doubtful Accounts Receivable Current

Tables

  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding █▁137.0136.0NA134.0134.0136.0NA140.0141.0141.269NA140.513139.619140.322NA139.388140.937144.717NA147.217147.06146.903NA145.828145.959145.872NA146.071145.782145.665NA145.454145.664144.655NA143.657141.737136.158NA133.461133.461133.461
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic █▁137.0136.0NA134.0134.0136.0NA139.0139.0138.417NA137.574137.831139.312NA138.779140.472143.632NA145.678145.732145.445NA144.133143.709143.145NA142.842142.701142.399NA142.69143.531143.063NA142.342139.278133.754NA133.461133.461133.461
 us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities trip:StockOptionsServiceAndPerformanceBasedRestrictedStockUnitsAndMarketBasedRestrictedStockUnits▁█16.917.8NA14.514.217.0NA7.96.13.5NA3.46.012.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities,us-gaap:AwardType trip:StockOptionsServiceAndPerformanceBasedRestrictedStockUnitsAndMarketBasedRestrictedStockUnits,us-gaap:PerformanceShares█▁0.20.1NA0.60.70.8NA0.70.50.5NA0.50.80.4NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:EarningsPerShareBasic ▅▃▄▄▁▅▆▇▇▇▆█▇▆▃▇▇▆▆▇▇▇▆███▇▇██▆▇██▇█▇▇▇██▇-0.29-0.59-0.53-0.36-1.14-0.120.110.360.240.190.050.50.230.04-0.60.180.190.090.010.380.230.190.020.510.40.440.250.380.480.480.140.390.470.440.240.420.380.360.160.410.410.35
us-gaap:EarningsPerShareDiluted ▅▃▄▄▁▅▆▇▇▇▆█▇▆▃▇▇▆▆▇▇▇▆███▇▇██▆▇██▇█▇▇▇██▇-0.29-0.59-0.53-0.36-1.14-0.120.110.360.240.180.050.490.230.04-0.60.180.190.090.010.370.230.180.020.510.40.430.250.370.470.470.140.380.460.430.230.410.370.350.160.410.410.35
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
us-gaap:AllocatedShareBasedCompensationExpense █▇▇▆▆▆█▇█▆▆▇▇▇▅▆▆▄▄▅▅▄▄▄▃▃▃▃▃▂▂▁▁▂32.029.029.028.025.026.033.029.032.027.028.029.031.029.024.026.028.019.021.022.022.019.020.019.018.016.017.017.015.014.013.95311.010.014.0NANANANANANANANA
us-gaap:ComprehensiveIncomeNetOfTax ▄▃▄▅▁▅▇▇▇▆▆█▆▆▃▇▇▆▅█▇▇▆██▇▆▇██▆███▇█▇▇▆▇▇▇-37.0-92.0-51.0-35.0-141.0-33.028.040.033.024.02.064.015.013.0-79.035.040.020.0-17.058.026.036.0-1.065.067.035.019.040.067.069.021.25759.54966.4958.69133.46561.08451.82349.59821.89953.11153.93748.156
us-gaap:CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization ▅▂▂▂▁▅▆▇█▆▅▆▇19.012.013.013.010.019.021.025.027.021.019.023.024.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:CostsAndExpenses ▅▄▄▄▄▆▆▇▇▇▆▇█▇▆██▇▆▇▇▆▇▆▆▅▄▅▄▃▃▃▃▂▂▂▂▂▂▁▁▁270.0207.0208.0197.0223.0305.0312.0360.0356.0345.0323.0369.0384.0355.0312.0397.0378.0345.0306.0355.0343.0310.0334.0327.0326.0273.0228.0270.0223.0185.0184.21171.442152.819141.616122.401120.461113.47110.338104.24298.73385.42375.908
us-gaap:GeneralAndAdministrativeExpense ▄▃▄▃▄▅▄▄▄▄▄▄▄▄▄▄▃▃▃▃▃▃█▃▄▃▃▃▃▂▂▂▂▂▂▂▂▂▂▁▁▁46.038.044.035.043.052.049.051.045.042.048.040.046.042.042.042.038.035.033.038.034.037.096.037.044.033.034.036.032.026.025.5824.55625.55222.43321.07920.05618.25216.25419.4389.1947.9448.194
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest ▄▃▃▄▁▅▆▇▇▆▆█▇▆▆▆▇▆▆▇▇▆▅███▇▇██-46.0-96.0-104.0-58.0-179.0-27.021.073.068.033.023.087.042.021.03.038.044.025.05.063.045.038.0-26.098.082.086.055.075.098.094.0NANANANANANANANANANANANA
us-gaap:IncomeTaxExpenseBenefit ▃▂▁▂▁▂▃▄▅▃▄▄▃▄█▄▄▄▃▃▄▄▁▄▄▄▄▄▅▄▃▅▄▄▃▅▄▄▄▄▅▄-6.0-16.0-32.0-10.0-26.0-11.05.023.034.07.015.018.010.016.087.013.017.012.04.08.011.011.0-29.024.024.023.019.021.030.026.06.46727.74122.91422.1379.57331.27523.56922.9711.52925.18530.38327.006
us-gaap:InterestExpense ▇▇██▄▁▁▁▁▁▁▂▂▂▂▂▂▂▁▂▂▂▂▂▁▁▂▁▁▁▁▁▁▂▂▂11.011.013.013.07.02.02.02.02.02.02.04.03.03.04.04.04.03.02.03.03.04.03.03.02.02.03.02.02.02.02.1992.5622.03.02.9782.882NANANANANANA
us-gaap:NetIncomeLoss ▄▃▃▄▁▅▆▇▇▇▆█▇▆▃▆▇▆▆▇▇▇▆███▇▇██▆▇██▇█▇▇▆▇▇▇-40.0-80.0-72.0-48.0-153.0-16.015.050.034.026.07.069.032.05.0-84.025.027.013.01.055.034.027.03.074.058.063.036.054.068.068.020.27455.88266.98862.29933.57959.3653.01948.11122.02154.31454.06447.278
 us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents us-gaap:RetainedEarnings▄▃▃▄▁▅▆▇▇▇▆█▇▆▃▆▇▆▆▇▇▇▆███▇▇██▆▇██▇█▇▇-40.0-80.0-72.0-48.0-153.0-16.016.050.034.026.08.069.032.05.0-84.025.027.013.01.057.035.027.03.074.058.063.036.054.068.068.020.27455.88266.98862.29933.57959.3653.01948.111NANANANA
us-gaap:NonoperatingIncomeExpense █▆▆▆▁-11.0-12.0-12.0-12.0-15.0NA-2.05.02.02.00.0-2.0-7.0-2.0-6.0-4.0-2.0-2.0-5.0-3.0-3.0-4.0-1.010.03.0-4.0-5.0-9.0-2.0-2.0-1.718-0.071-4.216-3.867-3.702-1.439-6.944-2.236-0.01-2.590.6741.063
us-gaap:OperatingIncomeLoss ▄▃▃▄▁▅▆▇▇▆▆█▇▆▆▆▇▆▆▇▇▆▅█▇█▇███▆███▇██▇▆██▇-35.0-84.0-92.0-46.0-164.0-27.023.068.066.031.023.089.049.023.09.042.046.027.010.066.048.042.0-25.088.079.090.060.084.0100.096.028.45983.69494.11888.30346.99292.24983.67873.37733.55682.06883.81973.314
us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax ▅▂█▇▆▁▇▂▄▄3.0-12.021.013.011.0-17.014.0-10.0-1.0-2.0NANANANANANANANANANANANANANANANANA-14.0-1.01.00.9413.1680.095-3.656-0.011.724-1.1961.427-0.236-1.203-0.127NA
us-gaap:OtherComprehensiveIncomeLossNetOfTax ▅▃█▇▇▃▇▄▅▅▄▄▃▆▆▆▇▆▂▅▄▆▄▄▆▁▃▃▅▅▅▆▅▄▅▅▅▅3.0-12.021.013.012.0-17.012.0-10.0-1.0-2.0-6.0-5.0-17.08.05.010.013.07.0-18.03.0-8.09.0-4.0-9.09.0-28.0-17.0-14.0-1.01.00.9833.667-0.498-3.608-0.1141.724-1.1961.427NANANANA
us-gaap:OtherNonoperatingIncomeExpense ▆▆▆▆▃▆▁█▇▇0.0-1.01.00.0-9.01.0-17.07.04.04.0NA2.0-4.01.0-2.00.02.01.0NANANANA2.013.05.0NA-2.0-7.0NANA0.0592.016-2.15-1.461-0.9741.367-4.5390.696NANANANA
us-gaap:ProfitLoss ▅▃▄▄▁▅▆▇▇▇▆█▇▆▃-40.0-80.0-72.0-48.0-153.0-16.016.050.034.026.08.069.031.05.0-84.0NANANANANANANANANANANA36.054.068.068.020.27455.88266.98862.29933.71759.53553.16548.17122.01754.29354.1147.371
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax ▄▂▂▃▁▅▆▇▇▇▆██▇▆█▇▆▆▇▇▆▅▇▇▆▅▆▆▅▄▄▄▄▃▄▃▃▂▃▃▃235.0123.0116.0151.059.0278.0335.0428.0422.0376.0346.0458.0433.0378.0321.0439.0424.0372.0316.0421.0391.0352.0309.0415.0405.0363.0288.0354.0323.0281.0212.669255.136246.937229.919169.393212.71197.148183.715137.798180.801169.242149.222
us-gaap:Revenues ▄▂▂▃▁▅▆▇▇▇▆██▇▆█▇▆▆▇▇▆▅▇▇▆▅▆▆▅▄▄▄▄▃▄▃▃▂▃▃▃235.0123.0116.0151.059.0278.0335.0428.0422.0376.0346.0458.0433.0378.0321.0439.0424.0372.0316.0421.0391.0352.0309.0415.0405.0363.0288.0354.0323.0281.0212.669255.136246.937229.919169.393212.71197.148183.715137.798180.801169.242149.222
us-gaap:SellingAndMarketingExpense ▄▂▂▂▁▄▄▆▆▆▅▇▇▆▅█▇▇▅▇▆▅▅▆▆▅▃▅▄▃▃▃▂▂▂▂▂▂▁▂▁▁123.073.067.070.054.0129.0138.0176.0180.0178.0157.0206.0217.0198.0166.0247.0229.0207.0172.0210.0202.0172.0146.0197.0192.0157.0115.0159.0127.0101.0108.28498.20482.57479.29166.9667.64764.24367.38951.94760.34952.68544.195
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
us-gaap:Assets ▇▇▆▆▇▇▆██▇▆▆▇▇▇▇█▇▇▇▇▇▆▇▇▆▆▆▅▄▄▃▄▃▃▃▂▁▁2387.02232.01969.01996.02249.02427.01984.02468.02566.02395.02167.02192.02304.02240.02272.02348.02472.02274.02238.02277.02385.02214.02128.02198.02277.02094.01959.01956.01831.01615.01473.0141448.1531455.5851341.6781299.1941259.2831187.253914.428835.886NANANA
us-gaap:Liabilities █▇▅▅▆▇▃▃▄▃▂▂▄▃▃▄▅▃▂▂▃▂▂▃▄▃▃▃▃▂▁▂▁▁▁▁▁▁▁1608.01447.01083.01088.01337.01400.0823.0820.0991.0888.0696.0750.0957.0850.0909.0931.01118.0890.0736.0697.0880.0750.0716.0872.01036.0915.0834.0870.0805.0671.0608.534619.347603.626541.416572.226555.994560.285559.718542.349NANANA
us-gaap:LiabilitiesAndStockholdersEquity ▇▇▆▆▇▇▆██▇▆▆▇▇▇▇█▇▇▇▇▇▆▇▇▆▆▆▅▄▄▃▄▃▃▃▂▁▁2387.02232.01969.01996.02249.02427.01984.02468.02566.02395.02167.02192.02304.02240.02272.02348.02472.02274.02238.02277.02385.02214.02128.02198.02277.02094.01959.01956.01831.01615.01473.0141448.1531455.5851341.6781299.1941259.2831187.253914.428835.886NANANA
us-gaap:StockholdersEquity ▄▄▄▄▄▅▅██▇▇▇▆▇▇▇▆▇▇█▇▇▇▆▆▆▅▅▅▄▄▄▄▄▃▃▃▁▁779.0785.0886.0908.0912.01027.01161.01648.01575.01507.01471.01442.01347.01390.01363.01417.01354.01384.01502.01580.01505.01464.01412.01326.01241.01179.01125.01086.01026.0944.0864.48828.806851.959800.262726.968688.644626.968354.71293.537NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
us-gaap:AssetsCurrent ▆▅▃▃▅▆▃▇█▇▅▆▆▆▆▆▇▆▆▆▇▆▅▆▆▅▄▅▅▄▃▄▃▃▃▄▃▂▁1006.0845.0573.0613.0853.01012.0533.01181.01271.01082.0915.0926.01040.0983.0993.01042.01180.01003.0950.0966.01107.0964.0865.0943.01012.0894.0747.0792.0855.0645.0630.285647.752611.472583.824632.494699.583630.421355.321278.322NANANA
us-gaap:CashAndCashEquivalentsAtCarryingValue ▇▆▄▄▆▇▃▇█▇▆▆▆▆▆▇█▇▆▆▇▆▆▅▅▅▄▄▅▃▃▃▂▂▃▅▄▂▂▂▁▁775.0674.0418.0446.0698.0798.0319.0838.0901.0771.0655.0663.0666.0635.0673.0750.0887.0731.0612.0611.0766.0653.0614.0567.0583.0505.0455.0491.0587.0319.0351.148276.358200.058211.867367.515548.372478.241208.625183.532188.38111.72481.917
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents ▆▅▂▃▆▇▁▇█▆▅▅▅▅▅▆█▆▅775.0674.0418.0446.0698.0798.0319.0838.0901.0771.0655.0663.0666.0635.0673.0750.0887.0731.0612.0NANANA614.0NANANANANANANANANANANANANANANANANANANA
us-gaap:AccountsReceivableNetCurrent ▂▁▁▁▁▄▄▆▇▆▅▆█▇▆▇▇▆▅▆▆▇▅▆▇▆▄▅▅▄▂▂▃▂▁▂▂▂▁114.073.070.080.069.0154.0176.0212.0261.0227.0205.0227.0285.0269.0230.0254.0252.0232.0189.0221.0230.0244.0180.0224.0243.0229.0151.0180.0185.0151.097.034111.138137.981113.31981.459103.0896.87398.58467.936NANANA
us-gaap:PrepaidExpenseAndOtherAssetsCurrent ▃▃▃▃▃▄▄▄▅▅▄▃█▇▃▃▃▃▄▂▃▄▃▄▄▅▄▅▄▂▂▂▂▂▂▁▁▁▁25.024.022.026.026.029.031.030.035.035.033.026.062.052.025.025.024.025.031.018.024.028.024.033.034.042.033.036.032.016.016.21413.98917.05911.27610.3658.9348.6558.1586.279NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
us-gaap:PropertyPlantAndEquipmentGross NANA626.0NANANA589.0561.0537.0509.0493.0NANANA440.0NANANA371.0NANANA335.0336.0330.0207.0186.0185.0169.0150.0122.209NANANA81.221NANANA76.707NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType trip:FurnitureOfficeEquipmentAndOtherNANA21.0NANANA21.020.020.019.018.0NANANA19.0NANANA19.0NANANA17.015.016.014.011.09.08.06.06.0NANANANANANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:ComputerEquipmentNANA71.0NANANA70.066.061.056.052.0NANANA46.0NANANA37.0NANANA36.037.036.033.031.031.029.024.021.124NANANA13.174NANANA11.638NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:LeaseholdImprovementsNANA49.0NANANA49.046.045.044.041.0NANANA39.0NANANA39.0NANANA32.033.030.042.040.037.036.034.021.776NANANA14.244NANANA12.924NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:SoftwareAndSoftwareDevelopmentCostsNANA371.0NANANA335.0315.0297.0276.0259.0NANANA213.0NANANA153.0NANANA127.0128.0125.0118.0104.0108.096.086.073.575NANANA48.527NANANA46.878NANANA
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment ██▇▇▇▆▆▆▅▅▅▄▄▄▃▃▃▂▂▃▂▂▂▂▂▂▂▂▁▁▁420.0398.0386.0365.0347.0338.0319.0296.0275.0252.0240.0227.0216.0198.0177.0166.0147.0128.0111.0137.0120.0104.088.089.083.091.077.079.068.058.048.625NANANA37.626NANANA43.391NANANA
 us-gaap:AmortizationOfIntangibleAssets us-gaap:FiniteLivedIntangibleAssetsByMajorClass us-gaap:TechnologyBasedIntangibleAssets▁▁▁▁▁▁██▄▄▄▄▄▄▄▄▄▄▄▄▁▄▄▄█▄▄▁1.01.01.01.01.01.03.03.02.02.02.02.02.02.02.02.02.02.02.02.01.02.02.02.03.02.02.01.0NANA0.2930.245NANA0.1610.183NANANANANANA
us-gaap:PropertyPlantAndEquipmentNet ▇▇▇▇██████▇██████████▇▇▇▇▇▆▅▄▃▂▂▂▁▁▁▁▁▁225.0229.0240.0250.0259.0268.0270.0265.0262.0257.0253.0256.0258.0261.0263.0266.0266.0262.0260.0262.0256.0252.0247.0247.0247.0226.0195.0161.0141.0114.081.52864.55154.60146.74243.80241.13338.82837.7634.754NANANA
us-gaap:Goodwill █████▇█▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▅▆▆▃▂▂▂▂▁▁▁▁▁▁855.0852.0862.0843.0837.0826.0840.0746.0754.0754.0756.0760.0763.0763.0758.0756.0750.0741.0736.0744.0733.0737.0732.0735.0743.0720.0734.0728.0607.0502.0501.984500.686502.015469.373471.684468.685467.088468.167466.892NANANA
us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill NANA30.0NANANA30.0NANANA30.0NANANA30.0NANANA30.0NANANA30.030.030.030.030.030.030.0NA30.330.330.3NA30.3NANANA30.3NANANA
us-gaap:IntangibleAssetsNetExcludingGoodwill ▂▃▃▃▃▄▄▃▄▄▄▅▅▅▅▅▆▆▆▇▆▆▆▇▇▇█▇▄▂▂▂▂▁▁▁▁▁▁74.080.086.091.095.0101.0110.092.0102.0109.0118.0129.0138.0136.0142.0150.0156.0161.0167.0178.0169.0172.0176.0186.0199.0196.0214.0200.0113.050.051.84251.00752.12236.80638.1939.39940.53642.42144.03NANANA
us-gaap:FiniteLivedIntangibleAssetsNet NANA56.0NANANA80.0NANANA88.0NANANA112.0NANANA137.0NANANA146.0156.0169.0166.0184.0170.083.0NA21.54220.70721.822NA7.89NANANA13.73NANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass trip:SubscriberRelationshipsNANA7.0NANANA11.0NANANA9.0NANANA13.0NANANA18.0NANANA20.022.023.024.027.0NANANA7.9778.5589.041NA2.106NANANA4.82NANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass trip:TechnologyBasedAndOtherNANA10.0NANANA12.0NANANA15.0NANANA17.0NANANA24.0NANANA20.022.027.028.038.027.09.0NA3.0521.7411.948NA0.382NANANA0.984NANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass us-gaap:CustomerRelationshipsNANA21.0NANANA33.0NANANA35.0NANANA44.0NANANA53.0NANANA62.067.072.069.072.091.054.0NA8.0NANANANANANANANANANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass us-gaap:TrademarksAndTradeNamesNANA18.0NANANA24.0NANANA29.0NANANA38.0NANANA42.0NANANA44.045.047.045.047.052.020.0NA11.0NANANANANANANANANANANA
us-gaap:OperatingLeaseRightOfUseAsset ▁▂▃▄▅▆███▇46.050.054.060.063.067.074.076.075.073.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherAssetsNoncurrent ███▇▇▇▇███▇▇▆▆▆▅▅▅▅▄▆▆▅▃▃▃▃▃▃▂▂▁▁▁▁▁▁▁▁104.0104.0104.094.095.092.095.0106.0101.0100.098.093.082.074.073.070.069.067.067.054.082.072.071.043.041.039.038.037.032.019.018.14416.41414.4613.37713.27410.48310.3810.75911.888NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
us-gaap:AccountsPayableCurrent ▃▂▃▃▂▇▂▃▂▂▃▄▂▁▁▃▁▂▃▂▅▃▂▃█▅▄▃▆▂▂▂▁▂▃▄▆▅▂15.013.018.014.013.034.011.016.013.011.015.022.010.07.08.015.07.012.014.011.025.015.010.017.038.026.019.018.027.011.09.86911.9859.15310.75814.09920.42128.40523.80612.097NANANA
us-gaap:AccruedIncomeTaxesCurrent 3.0NA1.01.03.04.014.0NANANA7.0NANANA5.04.08.06.010.016.011.010.09.0NA5.06.020.014.011.09.05.44310.79812.00611.39214.59714.94514.62924.44917.229NANANA
us-gaap:AccruedLiabilitiesCurrent █▆▆▆▅▆█▇▇▆▆▆▆▆▅▅▆▅▅▅▆▅▅▅▆▄▄▅▄▃▃▃▃▂▂▂▁▁▁207.0155.0160.0148.0141.0146.0203.0184.0181.0155.0151.0154.0163.0150.0136.0128.0165.0122.0127.0126.0153.0134.0123.0129.0148.0115.0114.0134.0105.081.085.53495.16881.8455.79263.23647.66245.47937.5234.938NANANA
us-gaap:ContractWithCustomerLiabilityCurrent ▃▂▁▁▂▄▄▅██▄▅49.038.028.031.038.060.062.072.098.0101.063.073.0NANA60.0NANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LiabilitiesCurrent ▅▃▃▂▃▃▅▆█▇▅▅█▇▄▅█▅▅▅▇▅▄▄▆▅▄▅▅▃▃▃▃▂▂▂▂▁▁444.0277.0242.0231.0249.0311.0435.0468.0638.0530.0393.0453.0631.0534.0372.0422.0621.0452.0423.0450.0575.0432.0312.0356.0522.0452.0381.0417.0386.0293.0242.889256.811241.299174.453195.64177.525169.844157.416130.393NANANA
us-gaap:OperatingLeaseLiabilityCurrent 19.0NA21.022.020.020.020.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherAccruedLiabilitiesCurrent 55.0NA53.058.059.070.063.0NANANA46.0NANANA37.0NA54.046.037.039.052.043.033.040.057.048.040.039.0NANA21.6625.58823.447NA15.1NANANA9.222NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
 us-gaap:LongTermDebt us-gaap:FinancialInstrument us-gaap:LongTermDebt██▁832.0831.0491.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:LongTermDebt us-gaap:FinancialInstrument,us-gaap:LongtermDebtType us-gaap:LongTermDebt,trip:TwoThousandAndTwentyFiveSeniorNotes██▁492.0492.0491.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:LongTermDebt us-gaap:FinancialInstrument,us-gaap:LongtermDebtType us-gaap:LongTermDebt,trip:TwoThousandAndTwentySixSeniorNotes█▁340.0339.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LongTermDebtNoncurrent ██▁▁832.0831.0491.0490.0NANANANANANANANANANA230.0265.0260.0210.091.020.091.0110.0200.0287.0287.0250.0260.0270.0280.0290.0300.0310.0320.0330.0340.0350.0360.0370.0380.0NANANA
us-gaap:DeferredIncomeTaxLiabilitiesNet ▁▁▆▆█2.02.010.010.013.0NA8.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherLiabilitiesNoncurrent ▅▅▅████▇▇▇▆▆▇▆▆▅▅▅▅▅▄▄▄▄▄▄▄▃▃▂▂▂▁▁▁▁▁▁▁225.0226.0223.0357.0375.0373.0380.0344.0341.0336.0282.0277.0307.0300.0293.0228.0222.0215.0210.0207.0196.0192.0189.0187.0178.0174.0154.0134.0111.073.052.53142.27534.26330.00525.56315.0715.66916.19615.952NANANA
us-gaap:OperatingLeaseLiabilityNoncurrent ▁▄█37.041.046.0NANANA64.066.067.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo NANA21.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree NANA13.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour NANA8.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive NANA3.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive NANA2.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
us-gaap:StockholdersEquity ▄▄▄▄▄▅▅██▇▇▇▆▇▇▇▆▇▇█▇▇▇▆▆▆▅▅▅▄▄▄▄▄▃▃▃▁▁779.0785.0886.0908.0912.01027.01161.01648.01575.01507.01471.01442.01347.01390.01363.01417.01354.01384.01502.01580.01505.01464.01412.01326.01241.01179.01125.01086.01026.0944.0864.48828.806851.959800.262726.968688.644626.968354.71293.537NANANA
us-gaap:AdditionalPaidInCapitalCommonStock ████▇▇▇▆▆▆▆▆▅▅▅▅▄▄▄▄▃▃▃▃▃▃▂▂▂▂▂▂▁▁▁▁1275.01244.01253.01224.01193.01167.01150.01114.01081.01046.01037.01010.0979.0946.0926.0901.0873.0843.0831.0808.0783.0758.0741.0707.0687.0692.0673.0653.0633.0618.0608.001590.685573.472545.859531.256526.397NANA293.744NANANA
us-gaap:RetainedEarningsAccumulatedDeficit ▃▃▃▄▄▅▅██▇▇▇▇▇▇▇▇▇▇▇▆▆▆▆▆▅▅▅▄▄▃▃▃▃▂▂▂▁▁269.0309.0389.0461.0509.0662.0681.01156.01106.01072.01043.01035.0966.0935.0926.01010.0985.0958.0945.0944.0888.0853.0826.0823.0749.0691.0628.0592.0538.0470.0401.881381.607325.725258.737196.438162.859103.49950.482.369NANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▆▆█▅▃▁▃▂▃▃▄▄▅█▆▆▄▂▁▄▄▅▃▄▅▄█-43.0-46.0-34.0-55.0-68.0-80.0-63.0-75.0-65.0-64.0-62.0-56.0-51.0-34.0-42.0-47.0-57.0-70.0-77.0-59.0-62.0-54.0-63.0-59.0-50.0-59.0-31.0NANANA-0.325-1.308-4.975-4.477-0.869-0.755-2.479-1.283-2.71NANANA
 us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents us-gaap:AccumulatedTranslationAdjustmentNANA-34.0NANANA-63.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:TreasuryStockValue ██████▇▆▆▆▆▆▆▅▅▅▅▄▂▁▁▁▁▂▂▂▂▂▂▂▂▂722.0722.0722.0722.0722.0722.0607.0547.0547.0547.0547.0547.0547.0457.0447.0447.0447.0347.0197.0113.0104.093.092.0145.0145.0145.0145.0145.0145.0145.0145.0142.322NANANANANANANANANANA
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue █▇▇▇▆▇█▇█▇▇▇█▇▆▆▇▅▅▆▅▅▄▄▄▄▄▄▄▃▃▃▂▃▂▂▁▁36.033.032.032.029.031.037.034.038.032.031.033.036.032.027.029.031.022.024.027.025.022.021.021.020.018.020.018.017.015.015.28613.02110.44512.6068.7437.7354.8034.35NANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▇▄▄▃▂▂▅▄██▅▄██▄▁125.0-19.0-14.0-32.0-78.0-70.060.01.0181.0182.031.014.0186.0174.018.0-135.0NANANANANANANANANANANANANA109.071.2145.03689.62143.66671.13776.45261.75829.71926.16177.8560.55553.316
us-gaap:NetCashProvidedByUsedInInvestingActivities ▄▅▅▅▅▄▃▁▂▂▃▅▃█▁▅-16.0-10.0-10.0-12.0-14.0-20.0-36.0-53.0-45.0-42.0-31.0-13.0-33.028.0-58.0-14.0NANANANANANANANANANANANANA-127.019.67239.969-77.703-178.732-230.624-7.338-5.91-0.311-431.282-2.138-33.414-72.028
us-gaap:NetCashProvidedByUsedInFinancingActivities ▄▆▄▃▄█▁▄▄▄▄▄▄▃▄▄-6.0287.0-8.0-212.0-9.0570.0-550.0-2.0-4.0-24.0-4.0-1.0-107.0-246.0-37.04.0NANANANANANANANANANANANANA-14.0-15.449-111.639-23.758-18.829-22.7280.177216.829-4.457400.7271.7591.787.568
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect ▅▆▄▃▄█▁▄▆▅▅▅▅▄▄▄▆▅101.0256.0-28.0-252.0-100.0479.0-519.0-63.0130.0116.0-8.0-3.031.0-38.0-77.0-137.0156.0119.0NANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
us-gaap:DeferredIncomeTaxExpenseBenefit ▄▁▅▆▅█▅▅-7.0-22.0-6.0-1.0-3.09.0-6.0-5.0NANA3.0-6.0NANA41.0-10.0-9.07.0-6.0-9.0-7.02.0-40.0-6.06.03.0-9.0-5.0-4.01.05.9253.524-1.302-2.674-5.3730.487-0.045-0.029-0.7570.00.0-0.174
us-gaap:NetCashProvidedByUsedInOperatingActivities ▇▄▄▃▂▂▅▄██▅▄██▄▁125.0-19.0-14.0-32.0-78.0-70.060.01.0181.0182.031.014.0186.0174.018.0-135.0NANANANANANANANANANANANANA109.071.2145.03689.62143.66671.13776.45261.75829.71926.16177.8560.55553.316
us-gaap:NetIncomeLoss ▄▃▃▄▁▅▆▇▇▇▆█▇▆▃▆▇▆▆▇▇▇▆███▇▇██▆▇██▇█▇▇▆▇▇▇-40.0-80.0-72.0-48.0-153.0-16.015.050.034.026.07.069.032.05.0-84.025.027.013.01.055.034.027.03.074.058.063.036.054.068.068.020.27455.88266.98862.29933.57959.3653.01948.11122.02154.31454.06447.278
 us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents us-gaap:RetainedEarnings▄▃▃▄▁▅▆▇▇▇▆█▇▆▃▆▇▆▆▇▇▇▆███▇▇██▆▇██▇█▇▇-40.0-80.0-72.0-48.0-153.0-16.016.050.034.026.08.069.032.05.0-84.025.027.013.01.057.035.027.03.074.058.063.036.054.068.068.020.27455.88266.98862.29933.57959.3653.01948.111NANANANA
us-gaap:ProfitLoss ▅▃▄▄▁▅▆▇▇▇▆█▇▆▃-40.0-80.0-72.0-48.0-153.0-16.016.050.034.026.08.069.031.05.0-84.0NANANANANANANANANANANA36.054.068.068.020.27455.88266.98862.29933.71759.53553.16548.17122.01754.29354.1147.371
us-gaap:ShareBasedCompensation █▇▇▇▆▆███▇▇▇█▇▆▆▇▅▅▆▆▅▅▅▅▄▄▄▄▄▄▃▃▄▃▂▂▂▃▁▁▁32.029.029.029.025.026.033.031.033.027.028.029.032.029.024.025.028.019.021.022.023.019.020.018.018.016.017.017.015.014.013.48311.65110.20813.61110.1798.4636.7684.69210.8652.0371.9682.474
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities ▄▅▅▅▅▄▃▁▂▂▃▅▃█▁▅-16.0-10.0-10.0-12.0-14.0-20.0-36.0-53.0-45.0-42.0-31.0-13.0-33.028.0-58.0-14.0NANANANANANANANANANANANANA-127.019.67239.969-77.703-178.732-230.624-7.338-5.91-0.311-431.282-2.138-33.414-72.028
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▃▂▂▂▃▄▅▅▄▃▃▃▃▃▃▃▃▄▃▄▄▃▃█▅▆▅▃▅▄▃▃▃▂▂▁▁▁▁▁▁▁15.010.09.010.016.020.023.022.021.017.016.014.016.015.014.015.017.018.015.021.019.017.016.039.023.031.026.013.022.020.016.13715.7214.3349.2648.6957.3385.917.3395.2945.6055.4314.993
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities ▄▆▄▃▄█▁▄▄▄▄▄▄▃▄▄-6.0287.0-8.0-212.0-9.0570.0-550.0-2.0-4.0-24.0-4.0-1.0-107.0-246.0-37.04.0NANANANANANANANANANANANANA-14.0-15.449-111.639-23.758-18.829-22.7280.177216.829-4.457400.7271.7591.787.568
us-gaap:PaymentsForRepurchaseOfCommonStock NANA0.00.00.0115.0NANANANA0.00.096.04.00.00.0100.0150.084.09.011.01.0NANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument,us-gaap:SubsequentEventType trip:SeniorNotesDueJulyFifteenTwoThousandAndTwentyFive,us-gaap:SubsequentEventNANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-31
Value137136134134136140141141140139140139140144147147146145145145146145145145145144143141136133133133
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-31
Value137136134134136139139138137137139138140143145145145144143143142142142142143143142139133133133133
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

trip:StockOptionsServiceAndPerformanceBasedRestrictedStockUnitsAndMarketBasedRestrictedStockUnits


Antidilutive
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value16171414177.96.13.53.46.012
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities, us-gaap:AwardType

trip:StockOptionsServiceAndPerformanceBasedRestrictedStockUnitsAndMarketBasedRestrictedStockUnits, us-gaap:PerformanceShares


Antidilutive
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value0.20.10.60.70.80.70.50.50.50.80.4
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount1.20.64.14.94.78.98.214.314.713.33.3

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value-0.29-0.59-0.53-0.36-1.14-0.120.110.360.240.190.050.50.230.04-0.60.180.190.090.010.380.230.190.020.510.40.440.250.380.480.480.140.390.470.440.240.420.380.360.160.410.410.35
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value-0.29-0.59-0.53-0.36-1.14-0.120.110.360.240.180.050.490.230.04-0.60.180.190.090.010.370.230.180.020.510.40.430.250.370.470.470.140.380.460.430.230.410.370.350.160.410.410.35
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Allocated Share Based Compensation Expense

us-gaap:AllocatedShareBasedCompensationExpense

us-gaap:AllocatedShareBasedCompensationExpense


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value322929282526332932272829312924262819212222192019181617171514131110.014
Percentage of AllocatedShareBasedCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax13.623.60.018.542.49.49.96.87.67.28.16.37.27.77.55.96.65.16.65.25.65.46.54.64.44.45.94.84.65.06.64.34.06.1

us-gaap:AllocatedShareBasedCompensationExpense us-gaap:AwardType

trip:AccountsReceivableAndContractAssets


Allocated
Period End2020-12-312020-09-302020-06-30
Value6.06.010.0
Percentage of AllocatedShareBasedCompensationExpense20.721.440.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.04.016.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax trip:AccountsReceivableAndContractAssets0.00.00.0

us-gaap:AllocatedShareBasedCompensationExpense us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value322929282526332932272829312924262819212222192019181617171514
Percentage of AllocatedShareBasedCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax13.623.60.018.542.49.49.96.87.67.28.16.37.27.77.55.96.65.16.65.25.65.46.54.64.44.45.94.84.65.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CorporateNonSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AllocatedShareBasedCompensationExpense us-gaap:IncomeStatementLocation

trip:TechnologyAndContent


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value131212129.01115131412131313129.012137.010.01110.09.08.08.07.06.08.07.06.06.05.1525.4794.07.04.2753.187
Percentage of AllocatedShareBasedCompensationExpense40.641.441.442.936.042.345.544.843.844.446.444.841.941.437.546.246.436.847.650.045.547.440.042.138.937.547.141.240.042.936.949.840.050.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.59.80.07.915.34.04.53.03.33.23.82.83.03.22.82.73.11.93.22.62.62.62.61.91.71.72.82.01.92.12.42.11.63.02.51.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax trip:TechnologyAndContent0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:GeneralAndAdministrativeExpense


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value15131312121112111210.010.011131110.09.09.07.06.06.07.06.08.07.07.06.06.06.06.05.05.0423.3774.05.04.4674.092
Percentage of AllocatedShareBasedCompensationExpense46.944.844.842.948.042.336.437.937.537.035.737.941.937.941.734.632.136.828.627.331.831.640.036.838.937.535.335.340.035.736.130.740.035.70.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.410.60.07.920.34.03.62.62.82.72.92.43.02.93.12.12.11.91.91.41.81.72.61.71.71.72.11.71.91.82.41.31.62.22.61.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:GeneralAndAdministrativeExpense0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:SellingAndMarketingExpense


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value4.04.04.04.04.04.06.05.06.05.04.05.05.06.05.05.06.05.05.05.05.04.04.04.04.04.03.04.03.03.03.2892.7952.02.01.4371.184
Percentage of AllocatedShareBasedCompensationExpense12.513.813.814.316.015.418.217.218.818.514.317.216.120.720.819.221.426.323.822.722.721.120.021.122.225.017.623.520.021.423.625.420.014.30.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.73.30.02.66.81.41.81.21.41.31.21.11.21.61.61.11.41.31.61.21.31.11.31.01.01.11.01.10.91.11.51.10.80.90.80.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:SellingAndMarketingExpense0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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
Value-37.0-92.0-51.0-35.0-141.0-33.0284033242.0641513-79.0354020-17.0582636-1.065673519406769215966583361514921535348
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 RevenueFromContractWithCustomerExcludingAssessedTax-15.7-74.80.0-23.2-239.0-11.98.49.37.86.40.614.03.53.4-24.68.09.45.4-5.413.86.610.2-0.315.716.59.66.611.320.724.610.023.326.925.519.828.726.327.015.929.431.932.3

Cost Of Goods And Service Excluding Depreciation Depletion And Amortization

us-gaap:CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization

us-gaap:CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value1912131310.01921252721192324
Percentage of CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.19.80.08.616.96.86.35.86.45.65.55.05.5

Costs And Expenses

us-gaap:CostsAndExpenses

us-gaap:CostsAndExpenses


Costs
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value270207208197223305312360356345323369384355312397378345306355343310334327326273228270223185184171152141122120113110104988575
Percentage of CostsAndExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax114.9168.30.0130.5378.0109.793.184.184.491.893.480.688.793.997.290.489.292.796.884.387.788.1108.178.880.575.279.276.369.065.886.667.261.961.672.356.657.660.175.654.650.550.9

General And Administrative Expense

us-gaap:GeneralAndAdministrativeExpense

us-gaap:GeneralAndAdministrativeExpense


General
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value4638443543524951454248404642424238353338343796374433343632262524252221201816199.1947.9448.194
Percentage of GeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax19.630.90.023.272.918.714.611.910.711.213.98.710.611.113.19.69.09.410.49.08.710.531.18.910.99.111.810.29.99.312.09.610.39.812.49.49.38.814.15.14.75.5

us-gaap:GeneralAndAdministrativeExpense us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, trip:HotelsMediaAndPlatformSegment


General
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value2016221416181820171420181920
Percentage of GeneralAndAdministrativeExpense43.542.150.040.037.234.636.739.237.833.341.745.041.347.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.513.00.09.327.16.55.44.74.03.75.83.94.45.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments trip:HotelsMediaAndPlatformSegment12.818.20.017.542.110.70.08.46.75.50.06.77.07.9

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

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value-46.0-96.0-104.0-58.0-179.0-27.021736833238742213.03844255.0634538-26.098828655759894
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-19.6-78.00.0-38.4-303.4-9.76.317.116.18.86.619.09.75.60.98.710.46.71.615.011.510.8-8.423.620.223.719.121.230.333.5

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value-6.0-16.0-32.0-10.0-26.0-11.05.023347.0151810.016871317124.08.01111-29.0242423192130266.4672722229.57331232211253027
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-2.6-13.00.0-6.6-44.1-4.01.55.48.11.94.33.92.34.227.13.04.03.21.31.92.83.1-9.45.85.96.36.65.99.39.33.010.99.39.65.714.712.012.58.413.918.018.1

Interest Expense

us-gaap:InterestExpense

us-gaap:InterestExpense


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value111113137.02.02.02.02.02.02.04.03.03.04.04.04.03.02.03.03.04.03.03.02.02.03.02.02.02.02.1992.5622.03.02.9782.882
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.78.90.08.611.90.70.60.50.50.50.60.90.70.81.20.90.90.80.60.70.81.11.00.70.50.61.00.60.60.71.01.00.81.31.81.4

us-gaap:InterestExpense us-gaap:DebtInstrument

trip:SeniorNotesDueJulyFifteenTwoThousandAndTwentyFive


Interest
Period End2021-06-302021-03-312020-07-09
Value9.08.017
Percentage of InterestExpense81.872.70.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.86.50.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax trip:SeniorNotesDueJulyFifteenTwoThousandAndTwentyFive0.00.00.0

us-gaap:InterestExpense us-gaap:DebtInstrument, us-gaap:LongtermDebtType

trip:SeniorNotesDueJulyFifteenTwoThousandAndTwentyFive, trip:TwentyFifteenCreditFacility


Interest
Period End2020-09-30
Value8.0
Percentage of InterestExpense61.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax trip:SeniorNotesDueJulyFifteenTwoThousandAndTwentyFive trip:TwentyFifteenCreditFacility0.0

us-gaap:InterestExpense us-gaap:LongtermDebtType

trip:TwentyFifteenCreditFacility


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value1.01.01.02.05.01.01.00.01.01.01.00.01.01.02.02.02.01.01.01.01.02.0
Percentage of InterestExpense9.19.17.715.471.450.050.00.050.050.050.00.033.333.350.050.050.033.350.033.333.350.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.40.80.01.38.50.40.30.00.20.30.30.00.20.30.60.50.50.30.30.20.30.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax trip:TwentyFifteenCreditFacility0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value-40.0-80.0-72.0-48.0-153.0-16.0155034267.069325.0-84.02527131.05534273.074586336546868205566623359534822545447
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-17.0-65.00.0-31.8-259.3-5.84.511.78.16.92.015.17.41.3-26.25.76.43.50.313.18.77.71.017.814.317.412.515.321.124.29.521.927.127.119.827.926.926.216.030.031.931.7

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value-40.0-80.0-72.0-48.0-153.0-16.0165034268.069325.0-84.02527131.05735273.0745863365468682055666233595348
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0106.7100.0100.0100.0114.3100.0100.0100.0100.0100.0100.0100.0100.0103.6102.9100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-17.0-65.00.0-31.8-259.3-5.84.811.78.16.92.315.17.41.3-26.25.76.43.50.313.59.07.71.017.814.317.412.515.321.124.29.521.927.127.119.827.926.926.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Nonoperating Income Expense

us-gaap:NonoperatingIncomeExpense

us-gaap:NonoperatingIncomeExpense


Nonoperating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value-11000000.0-12000000.0-12000000.0-12000000.0-15000000.0-2000000.05000000.02000000.02000000.00-2000000.0-7000000.0-2000000.0-6000000.0-4000000.0-2000000.0-2000000.0-5000000.0-3000000.0-3000000.0-4000000.0-1000000.010000000.03000000.0-4000000.0-5000000.0-9000000.0-2000000.0-2000000.0-1718000.0-71000.0-4216000.0-3867000.0-3702000.0-1439000.0-6944000.0-2236000.0-10000.0-2590000.0674000.01063000.0
Percentage of NonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-4.7-9.80.0-7.9-25.4-0.61.20.50.50.0-0.4-1.6-0.5-1.9-0.9-0.5-0.5-1.6-0.7-0.8-1.1-0.32.40.7-1.1-1.7-2.5-0.6-0.7-0.8-0.0-1.7-1.7-2.2-0.7-3.5-1.2-0.0-1.40.40.7

Operating Income Loss

us-gaap:OperatingIncomeLoss

us-gaap:OperatingIncomeLoss


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value-35.0-84.0-92.0-46.0-164.0-27.023686631238949239.042462710.0664842-25.0887990608410096288394884692837333828373
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-14.9-68.30.0-30.5-278.0-9.76.915.915.68.26.619.411.36.12.89.610.87.33.215.712.311.9-8.121.219.524.820.823.731.034.213.432.838.138.427.743.442.439.924.445.449.549.1

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

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value3.0-12.0211311-17.014-10.0-1.0-2.0-14.0-1.01.00.9413.1680.095-3.656-0.011.724-1.1961.427-0.236-1.203-0.127
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.3-9.80.08.618.6-6.14.2-2.3-0.2-0.5-4.0-0.30.40.41.20.0-1.6-0.00.8-0.60.8-0.2-0.7-0.1

Other Comprehensive Income Loss Net Of Tax

us-gaap:OtherComprehensiveIncomeLossNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value3.0-12.0211312-17.012-10.0-1.0-2.0-6.0-5.0-17.08.05.010.0137.0-18.03.0-8.09.0-4.0-9.09.0-28.0-17.0-14.0-1.01.00.9833.667-0.498-3.608-0.1141.724-1.1961.427
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 RevenueFromContractWithCustomerExcludingAssessedTax1.3-9.80.08.620.3-6.13.6-2.3-0.2-0.5-1.7-1.1-3.92.11.62.33.11.9-5.70.7-2.02.6-1.3-2.22.2-7.7-5.9-4.0-0.30.40.51.4-0.2-1.6-0.10.8-0.60.8

us-gaap:OtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value3.0-12.0211312-17.012-10.0-1.0-2.0-6.0-5.0-17.08.05.010.0137.0-18.03.0-8.09.0-4.0
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.3-9.80.08.620.3-6.13.6-2.3-0.2-0.5-1.7-1.1-3.92.11.62.33.11.9-5.70.7-2.02.6-1.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Other Nonoperating Income Expense

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:OtherNonoperatingIncomeExpense


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312015-12-312015-09-302015-06-302014-12-312014-09-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value0.0-1.01.00.0-9.01.0-17.07.04.04.02.0-4.01.0-2.00.02.01.02.0135.0-2.0-7.00.0592.016-2.15-1.461-0.9741.367-4.5390.696
Percentage of OtherNonoperatingIncomeExpense0.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-0.80.00.0-15.30.4-5.11.60.91.10.4-0.90.3-0.60.00.50.30.63.11.2-0.7-2.00.00.8-0.9-0.6-0.60.6-2.30.4

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value-40.0-80.0-72.0-48.0-153.0-16.0165034268.069315.0-84.036546868205566623359534822545447
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-17.0-65.00.0-31.8-259.3-5.84.811.78.16.92.315.17.21.3-26.212.515.321.124.29.521.927.127.119.928.027.026.216.030.032.031.7

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value23512311615159278335428422376346458433378321439424372316421391352309415405363288354323281212255246229169212197183137180169149
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:OperatingSegments, trip:ExperiencesAndDiningSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value68283653148311014112580941189862
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax28.922.831.035.123.729.932.832.929.621.327.225.822.616.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax28.922.831.035.123.729.932.832.929.621.327.225.822.616.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments trip:ExperiencesAndDiningSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, trip:HotelsMediaAndPlatformSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value15688748038169193238254254206270272253
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax66.471.563.853.064.460.857.655.660.267.659.559.062.866.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax66.471.563.853.064.460.857.655.660.267.659.559.062.866.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments trip:HotelsMediaAndPlatformSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

trip:TripAdvisorBrandedDisplayAndPlatform, trip:HotelsMediaAndPlatformSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value251417137.0323841433835414136
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.611.414.78.611.911.511.39.610.210.110.19.09.59.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.611.414.78.611.911.511.39.610.210.110.19.09.59.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax trip:TripAdvisorBrandedDisplayAndPlatform trip:HotelsMediaAndPlatformSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

trip:TripAdvisorBrandedHotels, trip:HotelsMediaAndPlatformSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value13174576731137155197211216171229231217
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax55.760.249.144.452.549.346.346.050.057.449.450.053.357.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax55.760.249.144.452.549.346.346.050.057.449.450.053.357.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax trip:TripAdvisorBrandedHotels trip:HotelsMediaAndPlatformSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementBusinessSegments

trip:ExperiencesAndDiningSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value68283653148311014112580941189862
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax28.922.831.035.123.729.932.832.929.621.327.225.822.616.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax28.922.831.035.123.729.932.832.929.621.327.225.822.616.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax trip:ExperiencesAndDiningSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

trip:HotelsMediaAndPlatformSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value15688748038169193238254254206270272253
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax66.471.563.853.064.460.857.655.660.267.659.559.062.866.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax66.471.563.853.064.460.857.655.660.267.659.559.062.866.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax trip:HotelsMediaAndPlatformSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

trip:OtherSegments


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value117.06.0187.0263249434246706363
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.75.75.211.911.99.49.611.410.211.213.315.314.516.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.75.75.211.911.99.49.611.410.211.213.315.314.516.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax trip:OtherSegments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllOtherSegments


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value117.06.0187.0263249434246706363
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.75.75.211.911.99.49.611.410.211.213.315.314.516.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.75.75.211.911.99.49.611.410.211.213.315.314.516.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:AllOtherSegments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Revenues

us-gaap:Revenues

us-gaap:Revenues


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value23512311615159278335428422376346458433378321439424372316421391352309415405363288354323281212255246229169212197183137180169149
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Selling And Marketing Expense

us-gaap:SellingAndMarketingExpense

us-gaap:SellingAndMarketingExpense


Selling
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value123736770541291381761801781572062171981662472292071722102021721461971921571151591271011089882796667646751605244
Percentage of SellingAndMarketingExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax52.359.357.846.491.546.441.241.142.747.345.445.050.152.451.756.354.055.654.449.951.748.947.247.547.443.339.944.939.335.950.938.533.434.539.531.832.636.737.733.431.129.6

Assets

us-gaap:Assets

us-gaap:Assets


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value2387223219691996224924271984246825662395216721922304224022722348247222742238227723852214212821982277209419591956183116151473144814551341129912591187914835722
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Liabilities

us-gaap:Liabilities

us-gaap:Liabilities


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value16081447108310881337140082382099188869675095785090993111188907366978807507168721036915834870805671608619603541572555560559542183
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets67.464.855.054.559.457.741.533.238.637.132.134.241.537.940.039.745.239.132.930.636.933.933.639.745.543.742.644.544.041.541.342.841.540.444.044.247.261.264.925.4

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value2387223219691996224924271984246825662395216721922304224022722348247222742238227723852214212821982277209419591956183116151473144814551341129912591187914835722
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-312009-12-312008-12-31
Value779785886908912102711611648157515071471144213471390136314171354138415021580150514641412132612411179112510861026944864828851800726688626354293539389242
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets32.635.245.045.540.642.358.566.861.462.967.965.858.562.160.060.354.860.967.169.463.166.166.460.354.556.357.455.556.058.558.757.258.559.656.054.752.838.835.174.60.00.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-312009-12-312008-12-31
Value-43.0-46.0-34.0-55.0-68.0-80.0-63.0-75.0-65.0-64.0-62.0-56.0-51.0-34.0-42.0-47.0-57.0-70.0-77.0-59.0-62.0-54.0-63.0-59.0-50.0-59.0-31.0-14.01.0-0.325-1.308-4.975-4.477-0.869-0.755-2.479-1.283-2.71-1.929-3.449-4.832
Percentage of StockholdersEquity-5.5-5.9-3.8-6.1-7.5-7.8-5.4-4.6-4.1-4.2-4.2-3.9-3.8-2.4-3.1-3.3-4.2-5.1-5.1-3.7-4.1-3.7-4.5-4.4-4.0-5.0-2.8-1.30.1-0.0-0.2-0.6-0.6-0.1-0.1-0.4-0.4-0.9-0.4-0.9-2.0
Percentage of Assets-1.8-2.1-1.7-2.8-3.0-3.3-3.2-3.0-2.5-2.7-2.9-2.6-2.2-1.5-1.8-2.0-2.3-3.1-3.4-2.6-2.6-2.4-3.0-2.7-2.2-2.8-1.6-0.70.1-0.0-0.1-0.3-0.3-0.1-0.1-0.2-0.1-0.3-0.30.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-312009-12-312008-12-31
Value1275124412531224119311671150111410811046103710109799469269018738438318087837587417076876926736536336186085905735455315265253052930.00.00.0
Percentage of StockholdersEquity163.7158.5141.4134.8130.8113.699.167.668.669.470.570.072.768.167.963.664.560.955.351.152.051.852.553.355.458.759.860.161.765.570.371.367.368.273.176.483.986.1100.10.00.00.0
Percentage of Assets53.455.763.661.353.048.158.045.142.143.747.946.142.542.240.838.435.337.137.135.532.834.234.832.230.233.034.433.434.638.341.340.839.440.740.941.844.333.435.10.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-312009-12-312008-12-31
Value269309389461509662681115611061072104310359669359261010985958945944888853826823749691628592538470401381325258196162103502.3690.00.00.0
Percentage of StockholdersEquity34.539.443.950.855.864.558.770.170.271.170.971.871.767.367.971.372.769.262.959.759.058.358.562.160.458.655.854.552.449.846.546.038.232.327.023.616.514.20.80.00.00.0
Percentage of Assets11.313.819.823.122.627.334.346.843.144.848.147.241.941.740.843.039.842.142.241.537.238.538.837.432.933.032.130.329.429.127.326.422.419.315.112.98.75.50.30.00.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value-722.0-722.0-722.0-722.0-722.0-722.0-607.0-547.0-547.0-547.0-547.0-547.0-547.0-457.0-447.0-447.0-447.0-347.0-197.0-113.0-104.0-93.0-92.0-145.0-145.0-145.0-145.0-145.0-145.0-145.0-145.221-142.322-42.407
Percentage of StockholdersEquity-92.7-92.0-81.5-79.5-79.2-70.3-52.3-33.2-34.7-36.3-37.2-37.9-40.6-32.9-32.8-31.5-33.0-25.1-13.1-7.2-6.9-6.4-6.5-10.9-11.7-12.3-12.9-13.4-14.1-15.4-16.8-17.2-5.0
Percentage of Assets-30.2-32.3-36.7-36.2-32.1-29.7-30.6-22.2-21.3-22.8-25.2-25.0-23.7-20.4-19.7-19.0-18.1-15.3-8.8-5.0-4.4-4.2-4.3-6.6-6.4-6.9-7.4-7.4-7.9-9.0-9.9-9.8-2.9
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Assets Current

us-gaap:AssetsCurrent

us-gaap:AssetsCurrent


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value10068455736138531012533118112711082915926104098399310421180100395096611079648659431012894747792855645630647611583632699630355278176
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets42.137.929.130.737.941.726.947.949.545.242.242.245.143.943.744.447.744.142.442.446.443.540.642.944.442.738.140.546.739.942.844.742.043.548.755.653.138.933.324.5

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashAndCashEquivalentsAtCarryingValue


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-31
Value7756744184466987983198389017716556636666356737508877316126117666536145675835054554915873193512762002113675484782081831881118193318.001
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets32.530.221.222.331.032.916.134.035.132.230.230.228.928.329.631.935.932.127.326.832.129.528.925.825.624.123.225.132.119.823.819.113.715.828.343.540.322.822.00.00.00.012.90.00.0

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value775674418446698798319838901771655663666635673750887731612614
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets32.530.221.222.331.032.916.134.035.132.230.230.228.928.329.631.935.932.127.328.9

Accounts Receivable Net Current

us-gaap:AccountsReceivableNetCurrent

us-gaap:AccountsReceivableNetCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value11473708069154176212261227205227285269230254252232189221230244180224243229151180185151971111371138110396986751
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.83.33.64.03.16.38.98.610.29.59.510.412.412.010.110.810.210.28.49.79.611.08.510.210.710.97.79.210.19.36.67.79.58.46.38.28.210.88.17.1

Prepaid Expense And Other Assets Current

us-gaap:PrepaidExpenseAndOtherAssetsCurrent

us-gaap:PrepaidExpenseAndOtherAssetsCurrent


Prepaid
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value25242226262931303535332662522525242531182428243334423336321616131711108.9348.6558.1586.2794.267
Percentage of PrepaidExpenseAndOtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.01.11.11.31.21.21.61.21.41.51.51.22.72.31.11.11.01.11.40.81.01.31.11.51.52.01.71.81.71.01.11.01.20.80.80.70.70.90.80.6

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross

us-gaap:PropertyPlantAndEquipmentGross


Property
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-312011-12-31
Value6265895615375094934403713353363302071861851691501228176
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets31.829.722.720.921.322.819.416.615.715.314.59.99.59.59.29.38.36.39.2

us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType

trip:FurnitureOfficeEquipmentAndOther


Property
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value212120201918191917151614119.08.06.06.0
Percentage of PropertyPlantAndEquipmentGross3.43.63.63.73.73.74.35.15.14.54.86.85.94.94.74.04.9
Percentage of Assets1.11.10.80.80.80.80.80.80.80.70.70.70.60.50.40.40.4
Percentage of Assets trip:FurnitureOfficeEquipmentAndOther0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ComputerEquipment


Property
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-312011-12-31
Value71706661565246373637363331312924211311
Percentage of PropertyPlantAndEquipmentGross11.311.911.811.411.010.510.510.010.711.010.915.916.716.817.216.017.316.215.2
Percentage of Assets3.63.52.72.42.32.42.01.71.71.71.61.61.61.61.61.51.41.01.4
Percentage of Assets us-gaap:ComputerEquipment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:LeaseholdImprovements


Property
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-312011-12-31
Value49494645444139393233304240373634211412
Percentage of PropertyPlantAndEquipmentGross7.88.38.28.48.68.38.910.59.69.89.120.321.520.021.322.717.817.516.8
Percentage of Assets2.52.51.91.81.81.91.71.71.51.51.32.02.01.92.02.11.51.11.5
Percentage of Assets us-gaap:LeaseholdImprovements0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:SoftwareAndSoftwareDevelopmentCosts


Property
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-312011-12-31
Value3713353152972762592131531271281251181041089686734846
Percentage of PropertyPlantAndEquipmentGross59.356.956.155.354.252.548.441.237.938.137.957.055.958.456.857.360.259.761.1
Percentage of Assets18.816.912.811.611.512.09.46.86.05.85.55.65.35.55.25.35.03.75.6
Percentage of Assets us-gaap:SoftwareAndSoftwareDevelopmentCosts0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-312011-12-31
Value4203983863653473383192962752522402272161981771661471281111371201048889839177796858483743
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets17.617.819.618.315.413.916.112.010.710.511.110.49.48.87.87.15.95.65.06.05.04.74.14.03.64.33.94.03.73.63.32.95.2

Amortization Of Intangible Assets

us-gaap:AmortizationOfIntangibleAssets us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:AmortizationOfIntangibleAssets

us-gaap:TechnologyBasedIntangibleAssets


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-312013-09-302012-12-312012-09-30
Value1.01.01.01.01.01.03.03.02.02.02.02.02.02.02.02.02.02.02.02.01.02.02.02.03.02.02.01.00.2930.2450.1610.183
Percentage of AmortizationOfIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:TechnologyBasedIntangibleAssets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:PropertyPlantAndEquipmentNet


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value22522924025025926827026526225725325625826126326626626226026225625224724724722619516114111481645446434138373430
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets9.410.312.212.511.511.013.610.710.210.711.711.711.211.711.611.310.811.511.611.510.711.411.611.210.810.810.08.27.77.15.54.53.83.53.43.33.34.14.24.3

us-gaap:PropertyPlantAndEquipmentNet us-gaap:PropertyPlantAndEquipmentByType

us-gaap:SoftwareAndSoftwareDevelopmentCosts


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value1081159997867161462821
Percentage of PropertyPlantAndEquipmentNet45.042.639.136.933.128.731.356.764.860.4
Percentage of Assets5.55.84.64.33.83.33.13.12.22.5
Percentage of Assets us-gaap:SoftwareAndSoftwareDevelopmentCosts0.00.00.00.00.00.00.00.00.00.0

us-gaap:PropertyPlantAndEquipmentNet us-gaap:StatementGeographical

country:US


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value199227214219222217170673630
Percentage of PropertyPlantAndEquipmentNet82.984.184.683.385.487.987.282.582.886.7
Percentage of Assets10.111.49.99.69.910.28.74.62.83.6
Percentage of Assets country:US0.00.00.00.00.00.00.00.00.00.0

trip:AllOtherCountries


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value41433944383025147.547
Percentage of PropertyPlantAndEquipmentNet17.115.915.416.714.612.112.817.517.2
Percentage of Assets2.12.21.81.91.71.41.31.00.6
Percentage of Assets trip:AllOtherCountries0.00.00.00.00.00.00.00.00.0

Goodwill

us-gaap:Goodwill

us-gaap:Goodwill


Goodwill
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value855852862843837826840746754754756760763763758756750741736744733737732735743720734728607502501500502469471468467468466460
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets35.838.243.842.237.234.042.330.229.431.534.934.733.134.133.432.230.332.632.932.730.733.334.433.432.634.437.537.233.231.134.134.634.535.036.337.239.351.255.963.7

us-gaap:Goodwill us-gaap:ConsolidationItems

us-gaap:OperatingSegments


Goodwillus-gaap:
Period End2020-09-302020-06-302019-12-31
Value843837840
Percentage of Goodwill100.0100.0100.0
Percentage of Assets42.237.242.3
Percentage of Assets us-gaap:OperatingSegments0.00.00.0

us-gaap:Goodwill us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, trip:ExperiencesAndDiningSegment


Goodwillus-gaap:
Period End2020-09-302020-06-302019-12-31
Value346339333
Percentage of Goodwill41.040.539.6
Percentage of Assets17.315.116.8
Percentage of Assets us-gaap:OperatingSegments trip:ExperiencesAndDiningSegment0.00.00.0

us-gaap:OperatingSegments, trip:HotelsMediaAndPlatform


Goodwillus-gaap:
Period End2020-09-302020-06-302019-12-31
Value407407405
Percentage of Goodwill48.348.648.2
Percentage of Assets20.418.120.4
Percentage of Assets us-gaap:OperatingSegments trip:HotelsMediaAndPlatform0.00.00.0

us-gaap:OperatingSegments, us-gaap:AllOtherSegments


Goodwillus-gaap:
Period End2020-09-302020-06-302019-12-31
Value9091102
Percentage of Goodwill10.710.912.1
Percentage of Assets4.54.05.1
Percentage of Assets us-gaap:OperatingSegments us-gaap:AllOtherSegments0.00.00.0

us-gaap:Goodwill us-gaap:StatementBusinessSegments

trip:ExperiencesAndDiningSegment


Goodwillus-gaap:
Period End2020-12-312020-03-312019-12-312019-09-302019-06-302019-03-31
Value362322333242248247
Percentage of Goodwill42.039.039.632.432.932.8
Percentage of Assets18.413.316.89.89.710.3
Percentage of Assets trip:ExperiencesAndDiningSegment0.00.00.00.00.00.0

trip:HotelsMediaAndPlatformSegment


Goodwillus-gaap:
Period End2020-12-312020-03-312019-12-312019-09-302019-06-302019-03-31
Value407405405405405405
Percentage of Goodwill47.249.048.254.353.753.7
Percentage of Assets20.716.720.416.415.816.9
Percentage of Assets trip:HotelsMediaAndPlatformSegment0.00.00.00.00.00.0

us-gaap:AllOtherSegments


Goodwillus-gaap:
Period End2020-12-312020-03-312019-12-312019-09-302019-06-302019-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value939910299101102290293300277292
Percentage of Goodwill10.812.012.113.313.413.539.639.940.438.539.8
Percentage of Assets4.74.15.14.03.94.313.613.313.213.214.9
Percentage of Assets us-gaap:AllOtherSegments0.00.00.00.00.00.00.00.00.00.00.0

Indefinite Lived Intangible Assets Excluding Goodwill

us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill

us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill


Indefinite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-312013-09-302013-06-302012-12-312011-12-31
Value3030303030303030303030303030303030
Percentage of IndefiniteLivedIntangibleAssetsExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.51.51.41.31.31.41.41.31.41.51.51.62.12.12.12.33.6

Intangible Assets Net Excluding Goodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill


Intangible
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value7480869195101110921021091181291381361421501561611671781691721761861991962142001135051515236383940424450
Percentage of IntangibleAssetsNetExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.13.64.44.64.24.25.53.74.04.65.45.96.06.16.26.46.37.17.57.87.17.88.38.58.79.410.910.26.23.13.53.53.62.72.93.13.44.65.36.9

Finite Lived Intangible Assets Net

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:FiniteLivedIntangibleAssetsNet


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-312013-09-302013-06-302012-12-312011-12-31
Value568088112137146156169166184170832120217.8913
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.84.04.14.96.16.97.17.47.99.48.74.51.51.41.50.61.6

us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass

trip:SubscriberRelationships


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312013-09-302013-06-302012-12-312011-12-31
Value7.0119.0131820222324277.9778.5589.0412.1064.82
Percentage of FiniteLivedIntangibleAssetsNet12.513.810.211.613.113.714.113.614.514.737.041.341.426.735.1
Percentage of Assets0.40.60.40.60.80.91.01.01.11.40.50.60.60.20.6
Percentage of Assets trip:SubscriberRelationships0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

trip:TechnologyBasedAndOther


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-312013-09-302013-06-302012-12-312011-12-31
Value10.0121517242022272838279.03.0521.7411.9480.3820.984
Percentage of FiniteLivedIntangibleAssetsNet17.915.017.015.217.513.714.116.016.920.715.910.814.28.48.94.87.2
Percentage of Assets0.50.60.70.71.10.91.01.21.31.91.40.50.20.10.10.00.1
Percentage of Assets trip:TechnologyBasedAndOther0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CustomerRelationships


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value2133354453626772697291548.0
Percentage of FiniteLivedIntangibleAssetsNet37.541.239.839.338.742.542.942.641.639.153.565.137.1
Percentage of Assets1.11.71.61.92.42.93.03.23.33.74.72.90.5
Percentage of Assets us-gaap:CustomerRelationships0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TrademarksAndTradeNames


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value18242938424445474547522011
Percentage of FiniteLivedIntangibleAssetsNet32.130.033.033.930.730.128.827.827.125.530.624.151.1
Percentage of Assets0.91.21.31.71.92.12.02.12.12.42.71.10.7
Percentage of Assets us-gaap:TrademarksAndTradeNames0.00.00.00.00.00.00.00.00.00.00.00.00.0

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value46505460636774767573
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.92.22.73.02.82.83.73.12.93.0

Other Assets Noncurrent

us-gaap:OtherAssetsNoncurrent

us-gaap:OtherAssetsNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value1041041049495929510610110098938274737069676754827271434139383732191816141313101010114.64
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.44.75.34.74.23.84.84.33.94.24.54.23.63.33.23.02.82.93.02.43.43.33.32.01.81.91.91.91.71.21.21.11.01.01.00.80.91.21.40.6

Accounts Payable Current

us-gaap:AccountsPayableCurrent

us-gaap:AccountsPayableCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value15131814133411161311152210.07.08.0157.0121411251510.0173826191827119.869119.1531014202823126.768
Percentage of AccountsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.60.60.90.70.61.40.60.60.50.50.71.00.40.30.40.60.30.50.60.51.00.70.50.81.71.21.00.91.50.70.70.80.60.81.11.62.42.61.40.9

Accrued Income Taxes Current

us-gaap:AccruedIncomeTaxesCurrent

us-gaap:AccruedIncomeTaxesCurrent


Accrued
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312018-12-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value3.01.01.03.04.0147.05.04.08.06.010.0161110.09.05.06.02014119.05.443101211141414241765
Percentage of AccruedIncomeTaxesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.10.20.70.30.20.20.30.30.40.70.50.50.40.20.31.00.70.60.60.40.70.80.81.11.21.22.72.19.0

Accrued Liabilities Current

us-gaap:AccruedLiabilitiesCurrent

us-gaap:AccruedLiabilitiesCurrent


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value2071551601481411462031841811551511541631501361281651221271261531341231291481151141341058185958155634745373438
Percentage of AccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets8.76.98.17.46.36.010.27.57.16.57.07.07.16.76.05.56.75.45.75.56.46.15.85.96.55.55.86.95.75.05.86.65.64.24.93.83.84.14.25.3

us-gaap:AccruedLiabilitiesCurrent us-gaap:RestructuringCostAndReserve

trip:RestructuringAndOtherRelatedReorganizationCosts


Accrued
Period End2020-09-302020-06-302019-12-31
Value2.07.01.0
Percentage of AccruedLiabilitiesCurrent1.45.00.5
Percentage of Assets0.10.30.1
Percentage of Assets trip:RestructuringAndOtherRelatedReorganizationCosts0.00.00.0

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
Value49382831386062729810163735960
Percentage of ContractWithCustomerLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.11.71.41.61.72.53.12.93.84.22.93.30.02.6

Liabilities Current

us-gaap:LiabilitiesCurrent

us-gaap:LiabilitiesCurrent


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value444277242231249311435468638530393453631534372422621452423450575432312356522452381417386293242256241174195177169157130142
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets18.612.412.311.611.112.821.919.024.922.118.120.727.423.816.418.025.119.918.919.824.119.514.716.222.921.619.421.321.118.116.517.716.613.015.114.114.317.215.619.7

Operating Lease Liability Current

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OperatingLeaseLiabilityCurrent


Operating
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-31
Value192122202020
Percentage of OperatingLeaseLiabilityCurrent100.0100.0100.0100.0100.0100.0
Percentage of Assets0.81.11.10.90.81.0

Other Accrued Liabilities Current

us-gaap:OtherAccruedLiabilitiesCurrent

us-gaap:OtherAccruedLiabilitiesCurrent


Other
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312018-12-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-312013-09-302013-06-302012-12-312011-12-31
Value5553585970634637544637395243334057484039212523159.222
Percentage of OtherAccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.32.72.92.62.93.22.11.62.22.01.71.72.21.91.61.82.52.32.02.01.51.81.61.21.1

Long Term Debt

us-gaap:LongTermDebt us-gaap:FinancialInstrument

us-gaap:LongTermDebt

us-gaap:LongTermDebt


Long
Period End2021-06-302021-03-312020-12-31
Value832831491
Percentage of LongTermDebt100.0100.0100.0
Percentage of Assets34.937.224.9
Percentage of Assets us-gaap:LongTermDebt0.00.00.0

us-gaap:LongTermDebt us-gaap:FinancialInstrument, us-gaap:LongtermDebtType

us-gaap:LongTermDebt, trip:TwoThousandAndTwentyFiveSeniorNotes


Long
Period End2021-06-302021-03-312020-12-31
Value492492491
Percentage of LongTermDebt59.159.2100.0
Percentage of Assets20.622.024.9
Percentage of Assets us-gaap:LongTermDebt trip:TwoThousandAndTwentyFiveSeniorNotes0.00.00.0

us-gaap:LongTermDebt, trip:TwoThousandAndTwentySixSeniorNotes


Long
Period End2021-06-302021-03-31
Value340339
Percentage of LongTermDebt40.940.8
Percentage of Assets14.215.2
Percentage of Assets us-gaap:LongTermDebt trip:TwoThousandAndTwentySixSeniorNotes0.00.0

Long Term Debt Noncurrent

us-gaap:LongTermDebtNoncurrent

us-gaap:LongTermDebtNoncurrent


Long
Period End2021-06-302021-03-312020-12-312020-09-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value8328314914902302652602109120911102002872872502602702802903003103203303403503603703800.0
Percentage of LongTermDebtNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets34.937.224.924.510.111.310.59.24.10.93.85.09.413.112.611.913.313.815.318.020.421.422.024.626.227.830.340.545.50.0

us-gaap:LongTermDebtNoncurrent us-gaap:DebtInstrument

trip:SeniorNotesDueJulyFifteenTwoThousandAndTwentyFive


Long
Period End2020-12-31
Value491
Percentage of LongTermDebtNoncurrent100.0
Percentage of Assets24.9
Percentage of Assets trip:SeniorNotesDueJulyFifteenTwoThousandAndTwentyFive0.0

us-gaap:LongTermDebtNoncurrent us-gaap:DebtInstrument, us-gaap:FairValueByFairValueHierarchyLevel

trip:SeniorNotesDueJulyFifteenTwoThousandAndTwentyFive, us-gaap:FairValueInputsLevel2


Long
Period End2020-12-312020-09-30
Value491490
Percentage of LongTermDebtNoncurrent100.0100.0
Percentage of Assets24.924.5
Percentage of Assets trip:SeniorNotesDueJulyFifteenTwoThousandAndTwentyFive us-gaap:FairValueInputsLevel20.00.0

us-gaap:LongTermDebtNoncurrent us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:LongtermDebtType

us-gaap:FairValueInputsLevel2, trip:TwoThousandAndTwentyFiveSeniorNotes


Long
Period End2021-06-302021-03-312020-12-31
Value492492491
Percentage of LongTermDebtNoncurrent59.159.2100.0
Percentage of Assets20.622.024.9
Percentage of Assets us-gaap:FairValueInputsLevel2 trip:TwoThousandAndTwentyFiveSeniorNotes0.00.00.0

us-gaap:FairValueInputsLevel2, trip:TwoThousandAndTwentySixSeniorNotes


Long
Period End2021-06-302021-03-31
Value340339
Percentage of LongTermDebtNoncurrent40.940.8
Percentage of Assets14.215.2
Percentage of Assets us-gaap:FairValueInputsLevel2 trip:TwoThousandAndTwentySixSeniorNotes0.00.0

Deferred Income Tax Liabilities Net

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:DeferredIncomeTaxLiabilitiesNet


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value2.02.010.010.0138.0
Percentage of DeferredIncomeTaxLiabilitiesNet100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.50.50.60.4

Other Liabilities Noncurrent

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OtherLiabilitiesNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value2252262233573753733803443413362822773073002932282222152102071961921891871781741541341117352423430251515161511
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets9.410.111.317.916.715.419.213.913.314.013.012.613.313.412.99.79.09.59.49.18.28.78.98.57.88.37.96.96.14.53.62.92.42.22.01.21.31.81.91.6

Operating Lease Liability Noncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent


Operating
Period End2021-06-302021-03-312020-12-312019-12-312019-09-302019-06-30
Value374146646667
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0100.0100.0100.0100.0
Percentage of Assets1.61.82.33.22.72.6

Lessee Operating Lease Liability Payments Due Year Two

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo


Lessee
Period End2020-12-31
Value21
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo100.0
Percentage of Assets1.1

Lessee Operating Lease Liability Payments Due Year Three

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree


Lessee
Period End2020-12-31
Value13
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree100.0
Percentage of Assets0.7

Lessee Operating Lease Liability Payments Due Year Four

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour


Lessee
Period End2020-12-31
Value8000000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour100.0
Percentage of Assets0.4

Lessee Operating Lease Liability Payments Due Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive


Lessee
Period End2020-12-31
Value3000000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive100.0
Percentage of Assets0.2

Lessee Operating Lease Liability Payments Due After Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive


Lessee
Period End2020-12-31
Value2000000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive100.0
Percentage of Assets0.1

Operating Lease Liability

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiability


Operating
Period End2020-12-312019-12-312019-09-302019-06-302019-03-31
Value6784858585
Percentage of OperatingLeaseLiability100.0100.0100.0100.0100.0
Percentage of Assets3.44.23.43.33.5

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue


Lessee
Period End2020-12-31
Value72
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue100.0
Percentage of Assets3.7

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount


Lessee
Period End2020-12-31
Value5000000.0
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount100.0
Percentage of Assets0.3

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-312009-12-312008-12-31
Value779785886908912102711611648157515071471144213471390136314171354138415021580150514641412132612411179112510861026944864828851800726688626354293539389242
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets32.635.245.045.540.642.358.566.861.462.967.965.858.562.160.060.354.860.967.169.463.166.166.460.354.556.357.455.556.058.558.757.258.559.656.054.752.838.835.174.60.00.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-312009-12-312008-12-31
Value-43.0-46.0-34.0-55.0-68.0-80.0-63.0-75.0-65.0-64.0-62.0-56.0-51.0-34.0-42.0-47.0-57.0-70.0-77.0-59.0-62.0-54.0-63.0-59.0-50.0-59.0-31.0-14.01.0-0.325-1.308-4.975-4.477-0.869-0.755-2.479-1.283-2.71-1.929-3.449-4.832
Percentage of StockholdersEquity-5.5-5.9-3.8-6.1-7.5-7.8-5.4-4.6-4.1-4.2-4.2-3.9-3.8-2.4-3.1-3.3-4.2-5.1-5.1-3.7-4.1-3.7-4.5-4.4-4.0-5.0-2.8-1.30.1-0.0-0.2-0.6-0.6-0.1-0.1-0.4-0.4-0.9-0.4-0.9-2.0
Percentage of Assets-1.8-2.1-1.7-2.8-3.0-3.3-3.2-3.0-2.5-2.7-2.9-2.6-2.2-1.5-1.8-2.0-2.3-3.1-3.4-2.6-2.6-2.4-3.0-2.7-2.2-2.8-1.6-0.70.1-0.0-0.1-0.3-0.3-0.1-0.1-0.2-0.1-0.3-0.30.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-312009-12-312008-12-31
Value1275124412531224119311671150111410811046103710109799469269018738438318087837587417076876926736536336186085905735455315265253052930.00.00.0
Percentage of StockholdersEquity163.7158.5141.4134.8130.8113.699.167.668.669.470.570.072.768.167.963.664.560.955.351.152.051.852.553.355.458.759.860.161.765.570.371.367.368.273.176.483.986.1100.10.00.00.0
Percentage of Assets53.455.763.661.353.048.158.045.142.143.747.946.142.542.240.838.435.337.137.135.532.834.234.832.230.233.034.433.434.638.341.340.839.440.740.941.844.333.435.10.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-312009-12-312008-12-31
Value269309389461509662681115611061072104310359669359261010985958945944888853826823749691628592538470401381325258196162103502.3690.00.00.0
Percentage of StockholdersEquity34.539.443.950.855.864.558.770.170.271.170.971.871.767.367.971.372.769.262.959.759.058.358.562.160.458.655.854.552.449.846.546.038.232.327.023.616.514.20.80.00.00.0
Percentage of Assets11.313.819.823.122.627.334.346.843.144.848.147.241.941.740.843.039.842.142.241.537.238.538.837.432.933.032.130.329.429.127.326.422.419.315.112.98.75.50.30.00.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value-722.0-722.0-722.0-722.0-722.0-722.0-607.0-547.0-547.0-547.0-547.0-547.0-547.0-457.0-447.0-447.0-447.0-347.0-197.0-113.0-104.0-93.0-92.0-145.0-145.0-145.0-145.0-145.0-145.0-145.0-145.221-142.322-42.407
Percentage of StockholdersEquity-92.7-92.0-81.5-79.5-79.2-70.3-52.3-33.2-34.7-36.3-37.2-37.9-40.6-32.9-32.8-31.5-33.0-25.1-13.1-7.2-6.9-6.4-6.5-10.9-11.7-12.3-12.9-13.4-14.1-15.4-16.8-17.2-5.0
Percentage of Assets-30.2-32.3-36.7-36.2-32.1-29.7-30.6-22.2-21.3-22.8-25.2-25.0-23.7-20.4-19.7-19.0-18.1-15.3-8.8-5.0-4.4-4.2-4.3-6.6-6.4-6.9-7.4-7.4-7.9-9.0-9.9-9.8-2.9
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Additional Paid In Capital Common Stock

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:AdditionalPaidInCapitalCommonStock


Additional
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302011-12-31
Value127512441253122411931167115011141081104610371010979946926901873843831808783758741707687692673653633618608590573545531526293
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets53.455.763.661.353.048.158.045.142.143.747.946.142.542.240.838.435.337.137.135.532.834.234.832.230.233.034.433.434.638.341.340.839.440.740.941.835.1

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


Retained
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value269309389461509662681115611061072104310359669359261010985958945944888853826823749691628592538470401381325258196162103502.3690.0
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets11.313.819.823.122.627.334.346.843.144.848.147.241.941.740.843.039.842.142.241.537.238.538.837.432.933.032.130.329.429.127.326.422.419.315.112.98.75.50.30.0

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value-43000000.0-46000000.0-34000000.0-55000000.0-68000000.0-80000000.0-63000000.0-75000000.0-65000000.0-64000000.0-62000000.0-56000000.0-51000000.0-34000000.0-42000000.0-47000000.0-57000000.0-70000000.0-77000000.0-59000000.0-62000000.0-54000000.0-63000000.0-59000000.0-50000000.0-59000000.0-31000000.0-325000.0-1308000.0-4975000.0-4477000.0-869000.0-755000.0-2479000.0-1283000.0-2710000.0-1929000.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-1.8-2.1-1.7-2.8-3.0-3.3-3.2-3.0-2.5-2.7-2.9-2.6-2.2-1.5-1.8-2.0-2.3-3.1-3.4-2.6-2.6-2.4-3.0-2.7-2.2-2.8-1.6-0.0-0.1-0.3-0.3-0.1-0.1-0.2-0.1-0.3-0.3

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedTranslationAdjustment


Accumulated
Period End2020-12-312019-12-31
Value-34000000.0-63000000.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0
Percentage of Assets-1.7-3.2
Percentage of Assets us-gaap:AccumulatedTranslationAdjustment0.00.0

Treasury Stock Value

us-gaap:TreasuryStockValue

us-gaap:TreasuryStockValue


Treasury
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value7227227227227227226075475475475475475474574474474473471971131049392145145145145145145145145142
Percentage of TreasuryStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets30.232.336.736.232.129.730.622.221.322.825.225.023.720.419.719.018.115.38.85.04.44.24.36.66.46.97.47.47.99.09.89.8

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

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value363332322931373438323133363227293122242725222121201820181715151310128.7437.7354.8034.35
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value363332322931373438323133363227293122242725222121201820181715151310128.7437.7354.8034.35
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value125-19.0-14.0-32.0-78.0-70.0601.0181182311418617418-135.01097114589437176612926776053
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax53.2-15.4-12.1-21.2-132.2-25.217.90.242.948.49.03.143.046.05.6-30.838.833.556.836.319.042.035.931.316.219.043.135.835.7

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value-16.0-10.0-10.0-12.0-14.0-20.0-36.0-53.0-45.0-42.0-31.0-13.0-33.028-58.0-14.0-127.01939-77.703-178.732-230.624-7.338-5.91-0.311-431.282-2.138-33.414-72.028
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-6.8-8.1-8.6-7.9-23.7-7.2-10.7-12.4-10.7-11.2-9.0-2.8-7.67.4-18.1-3.2-45.29.315.7-31.5-77.7-136.1-3.4-3.0-0.2-313.0-1.2-19.7-48.3

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value-6.0287-8.0-212.0-9.0570-550.0-2.0-4.0-24.0-4.0-1.0-107.0-246.0-37.04.0-14.0-15.449-111.639-23.758-18.829-22.7280.177216-4.4574001.7591.787.568
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-2.6233.3-6.9-140.4-15.3205.0-164.2-0.5-0.9-6.4-1.2-0.2-24.7-65.1-11.50.9-5.0-7.3-43.8-9.6-8.2-13.40.1110.0-2.4290.81.01.15.1

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

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value101256-28.0-252.0-100.0479-519.0-63.0130116-8.0-3.031-38.0-77.0-137.0156119
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax43.0208.1-24.1-166.9-169.5172.3-154.9-14.730.830.9-2.3-0.77.2-10.1-24.0-31.236.832.0

Deferred Income Tax Expense Benefit

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:DeferredIncomeTaxExpenseBenefit


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-312018-09-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value-7.0-22.0-6.0-1.0-3.09.0-6.0-5.03.0-6.041-10.0-9.07.0-6.0-9.0-7.02.0-40.0-6.06.03.0-9.0-5.0-4.01.05.9253.524-1.302-2.674-5.3730.487-0.045-0.029-0.7570.00.0-0.174
Percentage of DeferredIncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value125-19.0-14.0-32.0-78.0-70.0601.0181182311418617418-135.01097114589437176612926776053
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax53.2-15.4-12.1-21.2-132.2-25.217.90.242.948.49.03.143.046.05.6-30.838.833.556.836.319.042.035.931.316.219.043.135.835.7

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value-40.0-80.0-72.0-48.0-153.0-16.0155034267.069325.0-84.02527131.05534273.074586336546868205566623359534822545447
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-17.0-65.0-62.1-31.8-259.3-5.84.511.78.16.92.015.17.41.3-26.25.76.43.50.313.18.77.71.017.814.317.412.515.321.124.29.521.927.127.119.827.926.926.216.030.031.931.7

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value-40.0-80.0-72.0-48.0-153.0-16.0165034268.069325.0-84.02527131.05735273.0745863365468682055666233595348
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0106.7100.0100.0100.0114.3100.0100.0100.0100.0100.0100.0100.0100.0103.6102.9100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-17.0-65.0-62.1-31.8-259.3-5.84.811.78.16.92.315.17.41.3-26.25.76.43.50.313.59.07.71.017.814.317.412.515.321.124.29.521.927.127.119.827.926.926.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value-40.0-80.0-72.0-48.0-153.0-16.0165034268.069315.0-84.036546868205566623359534822545447
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-17.0-65.0-62.1-31.8-259.3-5.84.811.78.16.92.315.17.21.3-26.212.515.321.124.29.521.927.127.119.928.027.026.216.030.032.031.7

Share Based Compensation

us-gaap:ShareBasedCompensation

us-gaap:ShareBasedCompensation


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value32292929252633313327282932292425281921222319201818161717151413111013108.4636.7684.692102.0371.9682.474
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value-16.0-10.0-10.0-12.0-14.0-20.0-36.0-53.0-45.0-42.0-31.0-13.0-33.028-58.0-14.0-127.01939-77.703-178.732-230.624-7.338-5.91-0.311-431.282-2.138-33.414-72.028
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-6.8-8.1-8.6-7.9-23.7-7.2-10.7-12.4-10.7-11.2-9.0-2.8-7.67.4-18.1-3.2-45.29.315.7-31.5-77.7-136.1-3.4-3.0-0.2-313.0-1.2-19.7-48.3

Payments To Acquire Property Plant And Equipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value1510.09.010.016202322211716141615141517181521191716392331261322201615149.2648.6957.3385.917.3395.2945.6055.4314.993
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value-6.0287-8.0-212.0-9.0570-550.0-2.0-4.0-24.0-4.0-1.0-107.0-246.0-37.04.0-14.0-15.449-111.639-23.758-18.829-22.7280.177216-4.4574001.7591.787.568
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-2.6233.3-6.9-140.4-15.3205.0-164.2-0.5-0.9-6.4-1.2-0.2-24.7-65.1-11.50.9-5.0-7.3-43.8-9.6-8.2-13.40.1110.0-2.4290.81.01.15.1

Payments For Repurchase Of Common Stock

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock


Payments
Period End2020-12-312020-09-302020-06-302020-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value0.00.00.01150.00.0964.00.00.0100150849.0111.0
Percentage of PaymentsForRepurchaseOfCommonStock0.00.00.0100.00.00.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0

Debt Instrument Interest Rate Stated Percentage

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

us-gaap:DebtInstrumentInterestRateStatedPercentage

trip:SeniorNotesDueJulyFifteenTwoThousandAndTwentyFive, us-gaap:SubsequentEvent


Debt
Period End2020-07-09
Value0.07
Percentage of DebtInstrumentInterestRateStatedPercentage100.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.0
Percentage of LongTermDebtAndCapitalLeaseObligations trip:SeniorNotesDueJulyFifteenTwoThousandAndTwentyFive us-gaap:SubsequentEvent0.0

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

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber

us-gaap:EmployeeStockOption


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value5507000.05592000.05615000.05886000.06378000.06942000.06017000.06032000.06347000.06386000.06041000.06600000.06752000.07196000.06853000.06287000.06533000.06760000.05818000.05870000.06034000.05949000.05720000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:EmployeeStockOption


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value47.8347.6646.3146.5246.4246.6750.2753.9854.053.9754.053.2953.1352.4852.7855.1654.8955.2457.657.4657.1856.2253.71
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod

trip:MarketBasedRestrictedStockUnits


Share
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value000133000.043000.00078000.000071000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod0.00.00.0100.0100.00.00.0100.00.00.00.0100.0

us-gaap:RestrictedStockUnitsRSU


Share
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value199000.02078000.01410000.0395000.04439000.01784000.0251000.0340000.02313000.039234.0175460.0498000.02590000.0801000.0239000.0270000.03732000.0129000.0156000.0227000.01504000.0309000.0102000.091000.0515000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod0.00.00.00.03337.64148.80.00.02965.40.00.00.03647.90.00.00.00.00.00.00.00.00.00.00.00.0

Deferred Tax Assets Net

us-gaap:DeferredTaxAssetsNet

us-gaap:DeferredTaxAssetsNet


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value100103126119188160116453628
Percentage of DeferredTaxAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsNet us-gaap:DebtInstrument

trip:SeniorNotesDueAprilOneTwoThousandAndTwentySix


Deferred
Period End2021-03-31
Value9.0
Percentage of DeferredTaxAssetsNet0.0

Unrecognized Tax Benefits

us-gaap:UnrecognizedTaxBenefits

us-gaap:UnrecognizedTaxBenefits


Unrecognized
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312014-09-302014-06-302013-12-312012-12-312011-12-312010-12-312009-12-31
Value144140136123105896766583624126.3422.672
Percentage of UnrecognizedTaxBenefits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Valuation Allowance

us-gaap:DeferredTaxAssetsValuationAllowance

us-gaap:DeferredTaxAssetsValuationAllowance


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value10672575527171913119.239
Percentage of DeferredTaxAssetsValuationAllowance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

trip:AdjustedEarningsBeforeInterestTaxesDepreciationAndAmortization

trip:AdjustedEarningsBeforeInterestTaxesDepreciationAndAmortization


Adjusted
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value25-26.0-33.015-74.040911291288987146109806295101735811495858713012312798119129122
Percentage of AdjustedEarningsBeforeInterestTaxesDepreciationAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

trip:AdjustedEarningsBeforeInterestTaxesDepreciationAndAmortization us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, trip:ExperiencesAndDiningSegment


Adjusted
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-12.0-24.0-23.01.0-38.0-19.06.0157.0-24.09.02816-4.0
Percentage of AdjustedEarningsBeforeInterestTaxesDepreciationAndAmortization-48.092.369.76.751.4-47.56.611.65.5-27.010.319.214.7-5.0

us-gaap:OperatingSegments, trip:HotelsMediaAndPlatformSegment


Adjusted
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value33-3.0-12.04.0-33.053729310810570978577
Percentage of AdjustedEarningsBeforeInterestTaxesDepreciationAndAmortization132.011.536.426.744.6132.579.172.184.4118.080.566.478.096.2

trip:AdjustedEarningsBeforeInterestTaxesDepreciationAndAmortization us-gaap:StatementBusinessSegments

trip:OtherSegments


Adjusted
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4.01.02.010.0-3.06.01321138.08.0218.07.0
Percentage of AdjustedEarningsBeforeInterestTaxesDepreciationAndAmortization16.0-3.8-6.166.74.115.014.316.310.29.09.214.47.38.8

trip:AdjustmentsToAdditionalPaidInCapitalPurchaseOfCappedCalls

trip:AdjustmentsToAdditionalPaidInCapitalPurchaseOfCappedCalls


Adjustments
Period End2021-06-302021-03-31
Value0-26000000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalPurchaseOfCappedCalls0.0100.0

trip:AdjustmentsToAdditionalPaidInCapitalPurchaseOfCappedCalls us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2021-06-302021-03-31
Value0-26000000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalPurchaseOfCappedCalls0.0100.0

trip:CommonStockSharesCoveredUnderCappedCallTransactions us-gaap:DebtInstrument, us-gaap:StatementEquityComponents

trip:CommonStockSharesCoveredUnderCappedCallTransactions

trip:SeniorNotesDueAprilOneTwoThousandAndTwentySix, us-gaap:CommonStock


Common
Period End2021-06-302021-03-31
Value04700000.0
Percentage of CommonStockSharesCoveredUnderCappedCallTransactions0.0100.0

trip:CommonStockSharesHeldByRelatedParty us-gaap:RelatedPartyTransactionsByRelatedParty

trip:CommonStockSharesHeldByRelatedParty

trip:LTRIP


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value0.0160.00.00.0180.00.00.0180.00.00.0180.00.00.0180.00.00.0180.00.00.0180.0
Percentage of CommonStockSharesHeldByRelatedParty0.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.0

trip:CommonStockSharesHeldByRelatedParty us-gaap:RelatedPartyTransactionsByRelatedParty, us-gaap:StatementClassOfStock

trip:LTRIP, us-gaap:CommonClassB


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value0.0120.00.00.0120.00.00.0120.00.00.0120.00.00.0120.00.00.0120.00.00.0120.0
Percentage of CommonStockSharesHeldByRelatedParty0.078.00.00.00.070.30.00.00.070.30.00.00.070.30.00.00.070.30.00.00.070.50.00.00.070.50.0

trip:ContractWithCustomerLiabilityRevenueRefunded

trip:ContractWithCustomerLiabilityRevenueRefunded


Contract
Period End2021-06-302020-09-302020-06-302019-09-302019-06-30
Value1.01.04.00.01.0
Percentage of ContractWithCustomerLiabilityRevenueRefunded100.0100.0100.00.0100.0

trip:DebtInstrumentConvertibleCappedCallsInitialCapPrice us-gaap:Range, us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities, us-gaap:LongtermDebtType

trip:DebtInstrumentConvertibleCappedCallsInitialCapPrice

srt:Maximum, trip:StockOptionsServiceAndPerformanceBasedRestrictedStockUnitsAndMarketBasedRestrictedStockUnits, trip:TwoThousandAndTwentySixSeniorNotes


Debt
Period End2021-06-302021-03-31
Value0107.36
Percentage of DebtInstrumentConvertibleCappedCallsInitialCapPrice0.0100.0

trip:DebtInstrumentFloorInterestRate us-gaap:CreditFacility, us-gaap:LongtermDebtType, us-gaap:VariableRate

trip:DebtInstrumentFloorInterestRate

us-gaap:RevolvingCreditFacility, trip:TwentyFifteenCreditFacility, us-gaap:LondonInterbankOfferedRateLIBOR


Debt
Period End2021-06-302021-03-31
Value01.0
Percentage of DebtInstrumentFloorInterestRate0.0100.0

trip:DebtInstrumentIssuedPricePercentageOfPrincipalAmountRepurchased us-gaap:DebtInstrument

trip:DebtInstrumentIssuedPricePercentageOfPrincipalAmountRepurchased

trip:SeniorNotesDueJulyFifteenTwoThousandAndTwentyFive


Debt
Period End2020-07-09
Value101.0
Percentage of DebtInstrumentIssuedPricePercentageOfPrincipalAmountRepurchased100.0

trip:DebtInstrumentPrincipalAmountDenominationForConversionIntoCommonStock us-gaap:DebtInstrument

trip:DebtInstrumentPrincipalAmountDenominationForConversionIntoCommonStock

trip:SeniorNotesDueAprilOneTwoThousandAndTwentySix


Debt
Period End2021-06-302021-03-31
Value01000.0
Percentage of DebtInstrumentPrincipalAmountDenominationForConversionIntoCommonStock0.0100.0

trip:DebtInstrumentPrincipalAmountDenominationForConversionIntoCommonStock us-gaap:DebtInstrument, us-gaap:DebtInstrumentRedemptionPeriod

trip:SeniorNotesDueAprilOneTwoThousandAndTwentySix, trip:DebtInstrumentConversionPeriodTwo


Debt
Period End2021-06-302021-03-31
Value01000.0
Percentage of DebtInstrumentPrincipalAmountDenominationForConversionIntoCommonStock0.0100.0

trip:EstimatedPotentialIncomeTaxExpenseIncrease us-gaap:Range, us-gaap:IncomeTaxAuthorityName, us-gaap:SubsequentEventType, us-gaap:TaxPeriod

trip:EstimatedPotentialIncomeTaxExpenseIncrease

srt:Maximum, us-gaap:HerMajestysRevenueAndCustomsHMRC, us-gaap:SubsequentEvent, trip:TaxYears2012Through2016


Estimated
Period End2021-01-31
Value55
Percentage of EstimatedPotentialIncomeTaxExpenseIncrease100.0

srt:Minimum, us-gaap:HerMajestysRevenueAndCustomsHMRC, us-gaap:SubsequentEvent, trip:TaxYears2012Through2016


Estimated
Period End2021-01-31
Value45
Percentage of EstimatedPotentialIncomeTaxExpenseIncrease81.8

trip:EstimatedPotentialIncomeTaxExpenseIncrease us-gaap:Range, us-gaap:IncomeTaxAuthorityName, us-gaap:TaxPeriod

srt:Maximum, us-gaap:HerMajestysRevenueAndCustomsHMRC, trip:TaxYears2012Through2016


Estimated
Period End2021-01-31
Value55
Percentage of EstimatedPotentialIncomeTaxExpenseIncrease100.0

srt:Minimum, us-gaap:HerMajestysRevenueAndCustomsHMRC, trip:TaxYears2012Through2016


Estimated
Period End2021-01-31
Value45
Percentage of EstimatedPotentialIncomeTaxExpenseIncrease81.8

trip:FinanceLeasePrincipalPaymentsAndOtherFinancingActivities

trip:FinanceLeasePrincipalPaymentsAndOtherFinancingActivities


Finance
Period End2021-03-312020-03-31
Value2000000.01000000.0
Percentage of FinanceLeasePrincipalPaymentsAndOtherFinancingActivities100.0100.0

trip:GoodwillAllocationToNewSegment us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

trip:GoodwillAllocationToNewSegment

us-gaap:OperatingSegments, trip:HotelsMediaAndPlatform


Goodwill
Period End2020-09-30
Value0
Percentage of GoodwillAllocationToNewSegment0.0

us-gaap:OperatingSegments, us-gaap:AllOtherSegments


Goodwill
Period End2020-09-30
Value0
Percentage of GoodwillAllocationToNewSegment0.0

trip:GoodwillDisposedDuringPeriod us-gaap:ConsolidationItems

trip:GoodwillDisposedDuringPeriod

us-gaap:OperatingSegments


Goodwill
Period End2020-09-30
Value0
Percentage of GoodwillDisposedDuringPeriod0.0

trip:GoodwillDisposedDuringPeriod us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, us-gaap:AllOtherSegments


Goodwill
Period End2020-09-30
Value0
Percentage of GoodwillDisposedDuringPeriod0.0

trip:GovernmentGrantsAndOtherAssistanceBenefitsRecognized us-gaap:UnusualRiskOrUncertaintyByNature

trip:GovernmentGrantsAndOtherAssistanceBenefitsRecognized

trip:COVID19


Government
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value2.03.02.03.04.0
Percentage of GovernmentGrantsAndOtherAssistanceBenefitsRecognized100.0100.0100.0100.0100.0

trip:IncomeTaxBenefitsAssociatedWithExerciseSettlementOfStockBasedAwards

trip:IncomeTaxBenefitsAssociatedWithExerciseSettlementOfStockBasedAwards


Income
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value5.09.01.01.0121.03.0181.05.03.010.01.01.0143.02.03.0
Percentage of IncomeTaxBenefitsAssociatedWithExerciseSettlementOfStockBasedAwards100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

trip:IncomeTaxExpenseBenefitDueToCaresAct us-gaap:UnusualRiskOrUncertaintyByNature

trip:IncomeTaxExpenseBenefitDueToCaresAct

trip:COVID19


Income
Period End2020-12-312020-09-30
Value-1000000.0-3000000.0
Percentage of IncomeTaxExpenseBenefitDueToCaresAct100.0100.0

trip:IncreaseDecreaseInDeferredCustomerAdvances

trip:IncreaseDecreaseInDeferredCustomerAdvances


Increase
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-20.0-14.0-86.0-39.0-147.08499-39.0-148.091110
Percentage of IncreaseDecreaseInDeferredCustomerAdvances100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

trip:IncreaseDecreaseInDeferredCustomerPrepayments

trip:IncreaseDecreaseInDeferredCustomerPrepayments


Increase
Period End2021-06-302021-03-312020-06-302020-03-31
Value10236-14.0-86.0
Percentage of IncreaseDecreaseInDeferredCustomerPrepayments100.0100.0100.0100.0

trip:IncrementalAllowanceForExpectedUncollectibleAmountsOfAccountsReceivableAndContractAssets us-gaap:UnusualRiskOrUncertaintyByNature

trip:IncrementalAllowanceForExpectedUncollectibleAmountsOfAccountsReceivableAndContractAssets

trip:COVID19


Incremental
Period End2020-12-312020-09-302020-06-30
Value-2000000.0-2000000.07000000.0
Percentage of IncrementalAllowanceForExpectedUncollectibleAmountsOfAccountsReceivableAndContractAssets100.0100.0100.0

trip:NetOfTaxFromPurchaseOfCappedCalls

trip:NetOfTaxFromPurchaseOfCappedCalls


Net
Period End2021-06-302021-03-31
Value09000000.0
Percentage of NetOfTaxFromPurchaseOfCappedCalls0.0100.0

trip:PercentOfCommonStockHeldByRelatedPartyIfClassBConverted us-gaap:RelatedPartyTransactionsByRelatedParty

trip:PercentOfCommonStockHeldByRelatedPartyIfClassBConverted

trip:LTRIP


Percent
Period End2021-06-302021-03-312020-12-31
Value-0.121.40
Percentage of PercentOfCommonStockHeldByRelatedPartyIfClassBConverted100.0100.00.0

trip:PercentageOfNotesReceivableDueInFiveYears us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType

trip:PercentageOfNotesReceivableDueInFiveYears

trip:OtherLongTermReceivable


Percentage
Period End2021-06-302021-03-312020-12-31
Value050.00
Percentage of PercentageOfNotesReceivableDueInFiveYears0.0100.00.0

trip:PercentageOfNotesReceivableDueInTenYears us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType

trip:PercentageOfNotesReceivableDueInTenYears

trip:OtherLongTermReceivable


Percentage
Period End2021-06-302021-03-312020-12-31
Value050.00
Percentage of PercentageOfNotesReceivableDueInTenYears0.0100.00.0

trip:ProceedsFromGovernmentGrantsAndOtherAssistanceBenefitsReceived us-gaap:UnusualRiskOrUncertaintyByNature

trip:ProceedsFromGovernmentGrantsAndOtherAssistanceBenefitsReceived

trip:COVID19


Proceeds
Period End2021-06-302021-03-312020-12-31
Value4000000.02000000.05000000.0
Percentage of ProceedsFromGovernmentGrantsAndOtherAssistanceBenefitsReceived100.0100.0100.0

trip:PurchaseOfCappedCallsInConnectionWith2026SeniorNotes

trip:PurchaseOfCappedCallsInConnectionWith2026SeniorNotes


Purchase
Period End2021-06-302021-03-31
Value0.035
Percentage of PurchaseOfCappedCallsInConnectionWith2026SeniorNotes0.0100.0

trip:PurchaseOfCappedCallsInConnectionWith2026SeniorNotes us-gaap:DebtInstrument

trip:SeniorNotesDueAprilOneTwoThousandAndTwentySix


Purchase
Period End2021-06-302021-03-31
Value0.035
Percentage of PurchaseOfCappedCallsInConnectionWith2026SeniorNotes0.0100.0

trip:RelatedPartyVotingRightsPercentCurrent us-gaap:RelatedPartyTransactionsByRelatedParty

trip:RelatedPartyVotingRightsPercentCurrent

trip:LTRIP


Related
Period End2021-06-302021-03-312020-12-31
Value-0.157.30
Percentage of RelatedPartyVotingRightsPercentCurrent100.0100.00.0

trip:TaxAdjustmentsIncreaseDecreaseInIncomeTaxExpense us-gaap:MajorCustomers, us-gaap:Range, us-gaap:IncomeTaxAuthorityName, us-gaap:TaxPeriod

trip:TaxAdjustmentsIncreaseDecreaseInIncomeTaxExpense

trip:Expedia, srt:Maximum, us-gaap:InternalRevenueServiceIRS, trip:TaxYears2009Through2016


Tax
Period End2021-06-302021-03-312020-12-31
Value0.0105-10.0
Percentage of TaxAdjustmentsIncreaseDecreaseInIncomeTaxExpense0.0100.0100.0

trip:Expedia, srt:Maximum, us-gaap:InternalRevenueServiceIRS, trip:TwoThousandAndNineThroughTwoThousandAndElevenPreSpinOffTaxYears


Tax
Period End2021-06-302021-03-31
Value0.030
Percentage of TaxAdjustmentsIncreaseDecreaseInIncomeTaxExpense0.028.6

trip:Expedia, srt:Minimum, us-gaap:InternalRevenueServiceIRS, trip:TaxYears2009Through2016


Tax
Period End2021-06-302021-03-312020-12-31
Value0.095-10.0
Percentage of TaxAdjustmentsIncreaseDecreaseInIncomeTaxExpense0.090.5100.0

trip:Expedia, srt:Minimum, us-gaap:InternalRevenueServiceIRS, trip:TwoThousandAndNineThroughTwoThousandAndElevenPreSpinOffTaxYears


Tax
Period End2021-06-302021-03-31
Value0.020
Percentage of TaxAdjustmentsIncreaseDecreaseInIncomeTaxExpense0.019.0

us-gaap:AdjustmentForAmortization

us-gaap:AdjustmentForAmortization


Adjustment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value171718171818191817181716171717161514151412131210.01311119.07.06.07.05.0
Percentage of AdjustmentForAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation

us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value6.0233.01.03.0141.01.04.0237.02.06.0122.01.01.0132.02.02.09.07.04.075-13.0-65.09.05.0184.0294.34410-5.232
Percentage of AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value6.0233.01.03.0141.01.04.0237.02.06.0122.01.01.0132.02.02.09.07.04.075-13.0-65.09.05.0184.0294.34410-5.232
Percentage of AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AdvertisingExpense us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:AdvertisingExpense

us-gaap:OperatingSegments, trip:HotelsMediaAndPlatformSegment


Advertising
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1.01.02.03.01.04.04.018262924373526
Percentage of AdvertisingExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllocatedShareBasedCompensationExpenseNetOfTax

us-gaap:AllocatedShareBasedCompensationExpenseNetOfTax


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value2624232220202622242123222322231718121314141213121210.010.0119.09.09.9397.06.09.0
Percentage of AllocatedShareBasedCompensationExpenseNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerLiabilityRevenueRecognized

us-gaap:ContractWithCustomerLiabilityRevenueRecognized


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value6.0112.05.012325.010.012344.08.01332
Percentage of ContractWithCustomerLiabilityRevenueRecognized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:DebtInstrumentBasisSpreadOnVariableRate1

us-gaap:RevolvingCreditFacility, trip:TwentyFifteenCreditFacility, us-gaap:LondonInterbankOfferedRateLIBOR


Debt
Period End2021-03-312020-03-312017-03-312016-03-31
Value2.250.02250.01250.0125
Percentage of DebtInstrumentBasisSpreadOnVariableRate1100.0100.0100.0100.0

us-gaap:DebtInstrumentConvertibleConversionRatio1 us-gaap:DebtInstrument

us-gaap:DebtInstrumentConvertibleConversionRatio1

trip:SeniorNotesDueAprilOneTwoThousandAndTwentySix


Debt
Period End2021-06-302021-03-31
Value013.548
Percentage of DebtInstrumentConvertibleConversionRatio10.0100.0

us-gaap:DebtInstrumentRedemptionPricePercentage us-gaap:DebtInstrument, us-gaap:DebtInstrumentRedemptionPeriod

us-gaap:DebtInstrumentRedemptionPricePercentage

trip:SeniorNotesDueJulyFifteenTwoThousandAndTwentyFive, us-gaap:DebtInstrumentRedemptionPeriodOne


Debt
Period End2020-07-09
Value0.4
Percentage of DebtInstrumentRedemptionPricePercentage100.0

trip:SeniorNotesDueJulyFifteenTwoThousandAndTwentyFive, us-gaap:DebtInstrumentRedemptionPeriodTwo


Debt
Period End2020-07-09
Value0.4
Percentage of DebtInstrumentRedemptionPricePercentage100.0

us-gaap:Depreciation us-gaap:PropertyPlantAndEquipmentByType

us-gaap:Depreciation

us-gaap:SoftwareAndSoftwareDevelopmentCosts


Depreciationus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value1616171617171615151615141515151413121312111110.08.010.09.09.08.0
Percentage of Depreciation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DepreciationAndAmortization

us-gaap:DepreciationAndAmortization


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value282931303232343230
Percentage of DepreciationAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DepreciationAndAmortization us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value282931303232343230
Percentage of DepreciationAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeGainLossOnDerivativeNet

us-gaap:DerivativeGainLossOnDerivativeNet


Derivative
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-312018-09-302018-06-302016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value0001000000.001000000.000-3000000.03000000.0-2000000.02000000.0-1000000.01000000.01000000.01000000.03000000.0
Percentage of DerivativeGainLossOnDerivativeNet0.00.00.0100.00.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Effect
Period End2021-06-302021-03-312020-12-312020-03-312019-12-312019-09-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-2.0-2.04.0-1.07.0-9.0-4.0-3.0-15.06.00.08.08.01.0
Percentage of EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount

us-gaap:EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount


Employee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value3.03.04.04.04.04.05.05.05.04.03.03.04.03.03.03.03.03.03.03.03.03.0
Percentage of EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense


Employee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value6.05.06.06.05.06.07.07.08.06.05.07.08.07.01.09.010.07.08.08.08.07.07.07.06.06.07.06.06.05.04.2144.44.05.33.43.22.51.63.90.80.8
Percentage of EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeasePrincipalPayments

us-gaap:FinanceLeasePrincipalPayments


Finance
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value2000000.01000000.02000000.01000000.01000000.01000000.02000000.01000000.0
Percentage of FinanceLeasePrincipalPayments100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ForeignCurrencyTransactionGainLossBeforeTax

us-gaap:ForeignCurrencyTransactionGainLossBeforeTax


Foreign
Period End2020-12-312020-09-302020-06-302019-09-302019-06-30
Value1000000.01000000.01000000.02000000.0-1000000.0
Percentage of ForeignCurrencyTransactionGainLossBeforeTax100.0100.0100.0100.0100.0

us-gaap:GainLossOnSaleOfBusiness

us-gaap:GainLossOnSaleOfBusiness


Gain
Period End2020-12-312020-09-302020-06-302015-12-312015-09-30
Value0.0-1.0-5.03.017
Percentage of GainLossOnSaleOfBusiness0.0100.0100.0100.0100.0

us-gaap:GoodwillImpairmentLoss

us-gaap:GoodwillImpairmentLoss


Goodwill
Period End2020-12-312020-09-302019-03-31
Value03000000.00
Percentage of GoodwillImpairmentLoss0.0100.00.0

us-gaap:GoodwillImpairmentLoss us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Goodwill
Period End2020-12-312020-09-30
Value03000000.0
Percentage of GoodwillImpairmentLoss0.0100.0

us-gaap:GoodwillImpairmentLoss us-gaap:StatementGeographical

country:CN


Goodwill
Period End2020-09-30
Value3000000.0
Percentage of GoodwillImpairmentLoss100.0

us-gaap:GoodwillOtherIncreaseDecrease us-gaap:ConsolidationItems

us-gaap:GoodwillOtherIncreaseDecrease

us-gaap:OperatingSegments


Goodwill
Period End2020-09-30
Value3000000.0
Percentage of GoodwillOtherIncreaseDecrease100.0

us-gaap:GoodwillOtherIncreaseDecrease us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, trip:ExperiencesAndDiningSegment


Goodwill
Period End2020-09-30
Value0
Percentage of GoodwillOtherIncreaseDecrease0.0

us-gaap:IncomeLossFromEquityMethodInvestments

us-gaap:IncomeLossFromEquityMethodInvestments


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value0-1000000.0-1000000.0-1000000.0-1000000.0-1000000.0
Percentage of IncomeLossFromEquityMethodInvestments0.0100.0100.0100.0100.0100.0

us-gaap:IncomeTaxReconciliationStateAndLocalIncomeTaxes

us-gaap:IncomeTaxReconciliationStateAndLocalIncomeTaxes


Income
Period End2020-12-312020-09-302020-06-30
Value-33.03.0-5.0
Percentage of IncomeTaxReconciliationStateAndLocalIncomeTaxes100.0100.0100.0

us-gaap:IncreaseDecreaseInAccountsReceivableAndOtherOperatingAssets

us-gaap:IncreaseDecreaseInAccountsReceivableAndOtherOperatingAssets


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value6621-14.017-81.0-14.0-41.0-43.03427-8.0-66.0
Percentage of IncreaseDecreaseInAccountsReceivableAndOtherOperatingAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities

us-gaap:IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value59-11.0117.0-25.0-21.0-6.06.017-18.0-2.0-5.0-31.037-8.05.0-41.02914-11.0-9.0294.0-29.01240-5.00.9121814-10.747-3.384.507131.963
Percentage of IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInContractWithCustomerLiability

us-gaap:IncreaseDecreaseInContractWithCustomerLiability


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value129.0-3.0-8.0-22.0-1.0-12.0-25.0-3.038-10.0-30.03.042
Percentage of IncreaseDecreaseInContractWithCustomerLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable

us-gaap:IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-312016-09-30
Value0.06.0-19.0-12.0-20.0-30.0-1.01511-8.0-2.010.0-10.015330.01.011
Percentage of IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0

us-gaap:InformationTechnologyAndDataProcessing

us-gaap:InformationTechnologyAndDataProcessing


Information
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value545554465173707674736872686759616459586262615554504946464138353432292323
Percentage of InformationTechnologyAndDataProcessing100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InvestmentIncomeInterest

us-gaap:InvestmentIncomeInterest


Investment
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312013-12-312013-09-302012-12-312012-09-30
Value0.01.01.01.03.05.05.04.00.4220.4750.250.076
Percentage of InvestmentIncomeInterest0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage

us-gaap:RevolvingCreditFacility, trip:TwentyFifteenCreditFacility


Line
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value00.500.0050.00150000.00150000.001500
Percentage of LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage0.0100.00.0100.0100.00.00.00.0100.00.00.00.0100.00.00.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value3.0-12.0211312-17.012-10.0-1.0-2.0-6.0-5.0-17.08.05.010.0
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherNoncashIncomeExpense

us-gaap:OtherNoncashIncomeExpense


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-312018-09-302017-12-312017-09-302016-12-312015-12-312015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value-4000000.0-4000000.0-1000000.0-1000000.0-11000000.02000000.011000000.0-2000000.0-4000000.05000000.0-4000000.0-8000000.0-5000000.0-2000000.0-2000000.0-3000000.0-7000000.00-1000000.0-91000.0-1030000.0-833000.0263000.0-166000.0488000.0-472000.0-37000.084000.0-1437000.0235000.0987000.0
Percentage of OtherNoncashIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherOperatingIncomeExpenseNet

us-gaap:OtherOperatingIncomeExpenseNet


Other
Period End2020-12-312020-09-302020-06-30
Value1000000.01000000.0-4000000.0
Percentage of OtherOperatingIncomeExpenseNet100.0100.0100.0

us-gaap:PaymentOfFinancingAndStockIssuanceCosts

us-gaap:PaymentOfFinancingAndStockIssuanceCosts


Payment
Period End2020-12-31
Value0
Percentage of PaymentOfFinancingAndStockIssuanceCosts0.0

us-gaap:PaymentsForRestructuring us-gaap:RestructuringCostAndReserve

us-gaap:PaymentsForRestructuring

trip:RestructuringAndOtherRelatedReorganizationCosts


Payments
Period End2020-12-31
Value1.0
Percentage of PaymentsForRestructuring100.0

us-gaap:PaymentsOfDebtIssuanceCosts us-gaap:CreditFacility

us-gaap:PaymentsOfDebtIssuanceCosts

trip:TwentyFifteenCreditFacility


Payments
Period End2020-09-30
Value0
Percentage of PaymentsOfDebtIssuanceCosts0.0

us-gaap:PaymentsOfDebtIssuanceCosts us-gaap:DebtInstrument

trip:SeniorNotesDueAprilOneTwoThousandAndTwentySix


Payments
Period End2021-06-302021-03-31
Value05000000.0
Percentage of PaymentsOfDebtIssuanceCosts0.00.0

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value6.0233.01.03.0141.02.03.0237.01.06.0122.01.01.0132.02.02.09.07.04.049131.09.05.0184.0294.3440.3025.2322.9860.6540.0762.959
Percentage of PaymentsRelatedToTaxWithholdingForShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromDebtNetOfIssuanceCosts us-gaap:DebtInstrument

us-gaap:ProceedsFromDebtNetOfIssuanceCosts

trip:SeniorNotesDueAprilOneTwoThousandAndTwentySix


Proceeds
Period End2021-06-302021-03-31
Value0.0340
Percentage of ProceedsFromDebtNetOfIssuanceCosts0.0100.0

us-gaap:ProceedsFromIssuanceOfSeniorLongTermDebt

us-gaap:ProceedsFromIssuanceOfSeniorLongTermDebt


Proceeds
Period End2021-06-302021-03-312020-12-31
Value0.03400.0
Percentage of ProceedsFromIssuanceOfSeniorLongTermDebt0.0100.00.0

us-gaap:ProceedsFromIssuanceOrSaleOfEquity

us-gaap:ProceedsFromIssuanceOrSaleOfEquity


Proceeds
Period End2021-06-302021-03-312019-12-312019-09-302018-12-312018-09-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value1.07.00.01.03.00.00.00.00.03.01.03.01.02.02.01.01.08.01.00.00.02.02.6451.211136.4594.460.4822168.926
Percentage of ProceedsFromIssuanceOrSaleOfEquity100.0100.00.0100.0100.00.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromLinesOfCredit us-gaap:CreditFacility

us-gaap:ProceedsFromLinesOfCredit

trip:TwentyFifteenCreditFacility


Proceeds
Period End2020-12-312020-09-302020-06-302020-03-312018-12-312018-09-302018-06-302018-03-312017-03-31
Value0.00.00.07000.00.00.05.0270
Percentage of ProceedsFromLinesOfCredit0.00.00.0100.00.00.00.0100.0100.0

us-gaap:ProvisionForDoubtfulAccounts

us-gaap:ProvisionForDoubtfulAccounts


Provision
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value1.02.0-2.04.010.05.03.00.1070.7220.3220.3340.534-2.8841.737-0.4370.3080.020.3720.209
Percentage of ProvisionForDoubtfulAccounts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax


Reclassification
Period End2020-12-312020-09-302020-06-30
Value00-1000000.0
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax0.00.0100.0

us-gaap:RepaymentsOfLinesOfCredit us-gaap:CreditFacility

us-gaap:RepaymentsOfLinesOfCredit

trip:TwentyFifteenCreditFacility


Repayments
Period End2020-12-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value0.00.00.00.023555355515120811990
Percentage of RepaymentsOfLinesOfCredit0.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestructuringAndRelatedCostIncurredCost

us-gaap:RestructuringAndRelatedCostIncurredCost


Restructuring
Period End2020-12-312020-09-302020-06-302020-03-31
Value-1.00.0339.0
Percentage of RestructuringAndRelatedCostIncurredCost100.00.0100.0100.0

us-gaap:RestructuringAndRelatedCostIncurredCost us-gaap:RestructuringCostAndReserve

us-gaap:EmployeeSeverance


Restructuring
Period End2020-12-312020-09-302020-06-302020-03-31
Value-1.00.0339.0
Percentage of RestructuringAndRelatedCostIncurredCost100.00.0100.0100.0

us-gaap:RestructuringCharges

us-gaap:RestructuringCharges


Restructuring
Period End2020-12-312020-09-302020-06-302020-03-31
Value-1.00.0339.0
Percentage of RestructuringCharges100.00.0100.0100.0

us-gaap:RestructuringCharges us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Restructuring
Period End2020-12-312020-09-302020-06-302020-03-31
Value-1.00.0339.0
Percentage of RestructuringCharges100.00.0100.0100.0

us-gaap:RestructuringCharges us-gaap:RestructuringCostAndReserve

trip:RestructuringAndOtherRelatedReorganizationCosts


Restructuring
Period End2020-12-312020-09-30
Value-1.00.0
Percentage of RestructuringCharges100.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod

trip:MarketBasedRestrictedStockUnits


Share
Period End2020-12-312020-09-30
Value289000.035000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod100.0100.0

us-gaap:RestrictedStockUnitsRSU


Share
Period End2021-06-302021-03-312020-12-312020-09-30
Value359000.0307000.0284000.0594000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod0.00.098.31697.1

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue

trip:MarketBasedRestrictedStockUnits


Share
Period End2020-12-312020-09-30
Value-13.88-6.81
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue100.0100.0

us-gaap:RestrictedStockUnitsRSU


Share
Period End2021-06-302021-03-312020-12-312020-09-30
Value2.7632.14-1.33-0.41
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue0.00.09.66.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue

trip:MarketBasedRestrictedStockUnits


Share
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value00028.15-5.860057.6200059.4
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue0.00.00.0100.0100.00.00.0100.00.00.00.0100.0

us-gaap:RestrictedStockUnitsRSU


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312012-09-30
Value-0.0245.79-0.07-0.72-0.5125.71-5.17-0.86-0.7254.10.850.76-0.0141.440
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue0.00.00.00.00.091.388.20.00.093.90.00.00.069.80.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod

us-gaap:RestrictedStockUnitsRSU


Share
Period End2021-06-302021-03-312020-12-31
Value603000.02360000.0477000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue

us-gaap:RestrictedStockUnitsRSU


Share
Period End2021-06-302021-03-312020-12-31
Value-0.7933.94-2.97
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value049.690.1442.8190.00490.4264-0.00060.41260.40840.4251-0.0040.40220.42080.42290.00620.41310.40930.4153-0.00020.42680.42090.41640.00030.40240.40660.4186-0.03660.46090.47320.4809-0.00030.49620.51820.5172-0.00080.54780.5334
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value0.010.65-0.011.148200.0118-0.00610.01490.02220.02470.00040.02780.02710.02660.00120.01840.01870.019100.01150.01080.01280.00060.01670.01550.0151-0.00140.01760.01980.01970.00010.01830.01070.010700.0090.0105
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized us-gaap:PlanName

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized

trip:TwoThousandEighteenStockAndAnnualIncentivePlan


Share
Period End2021-06-08
Value10.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue

us-gaap:EmployeeStockOption


Share
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value0.08.00.01.01.00.01.01.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue0.0100.00.0100.0100.00.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod

us-gaap:EmployeeStockOption


Share
Period End2021-06-302021-03-312020-12-31
Value58000.094000.0284000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice

us-gaap:EmployeeStockOption


Share
Period End2021-06-302021-03-312020-12-31
Value1.6440.930.62
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross

us-gaap:EmployeeStockOption


Share
Period End2021-06-302021-03-312020-12-312019-12-312019-09-302019-06-302019-03-312018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value17000.0699000.015000.065000.012000.0138000.0537000.010000.0611000.0804000.027000.016000.01486000.013000.018000.0403000.0630000.0367660.021236.0167820.013682.0476830.048336.01214500.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0.0420.350-0.03-0.0710.18-0.4415.5419.7522.320.3923.1219.27
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice

us-gaap:EmployeeStockOption


Share
Period End2021-06-302021-03-312020-12-31
Value-0.334.75.72
Percentage of ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice

us-gaap:EmployeeStockOption


Share
Period End2021-06-302021-03-312020-12-31
Value0.0845.92-0.06
Percentage of ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice100.0100.0100.0

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1 us-gaap:AwardType

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1

us-gaap:EmployeeStockOption


Sharebased
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value3.08.01.03.08.01.02.08.0
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised us-gaap:AwardType

us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised

us-gaap:EmployeeStockOption


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value44000.0628000.02000.001000.01000.02000.033000.051000.0109000.0543000.087000.0336000.0196000.08000.084000.030000.0374000.041000.0138000.0227000.0327000.0
Percentage of StockIssuedDuringPeriodSharesStockOptionsExercised100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised


Stock
Period End2021-06-302021-03-312019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value1.07.00.01.01.03.00.03.00.00.00.03.01.03.01.02.02.01.01.08.0
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised100.0100.00.0100.0100.0100.00.0100.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value1.07.00.01.01.03.00.03.00.00.00.03.01.03.01.02.02.01.01.08.0
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised100.0100.00.0100.0100.0100.00.0100.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStockAcquiredAverageCostPerShare

us-gaap:TreasuryStockAcquiredAverageCostPerShare


Treasury
Period End2020-12-312020-09-302020-06-302020-03-312018-06-302018-03-312016-12-31
Value00024.3238.639.8860.63
Percentage of TreasuryStockAcquiredAverageCostPerShare0.00.00.0100.0100.0100.0100.0

us-gaap:TreasuryStockValueAcquiredCostMethod

us-gaap:TreasuryStockValueAcquiredCostMethod


Treasury
Period End2020-12-312020-09-302020-06-302020-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312013-12-312013-09-30
Value0.00.00.01150.00.09010.00.00.0100150849.0111472.89999
Percentage of TreasuryStockValueAcquiredCostMethod0.00.00.0100.00.00.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStockValueAcquiredCostMethod us-gaap:StatementEquityComponents

us-gaap:TreasuryStock


Treasury
Period End2020-12-312020-09-302020-06-302020-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312013-12-312013-09-30
Value0.00.00.01150.00.09010.00.00.0100150849.0111.02.89999
Percentage of TreasuryStockValueAcquiredCostMethod0.00.00.0100.00.00.0100.0100.00.00.0100.0100.0100.0100.0100.00.7100.0100.0

dei:EntityCommonStockSharesOutstanding us-gaap:StatementClassOfStock

dei:EntityCommonStockSharesOutstanding

trip:CommonStockUnclassified


Entity
Period End2020-08-032020-05-012020-02-122019-10-312019-07-312019-05-012019-02-142018-11-012018-07-252018-05-042018-02-092017-11-012017-08-022017-05-042017-02-102016-11-022016-07-292016-05-032016-02-052015-10-302015-07-162015-05-012015-02-062014-10-28
Value121121123126126126125124124124126126125128131132132132132131131130130130
Percentage of EntityCommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

trip:AccountsReceivableAndContractAssetsNetCurrent

trip:AccountsReceivableAndContractAssetsNetCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value15997839174159183218270236212237300281230
Percentage of AccountsReceivableAndContractAssetsNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

trip:DeferredCustomerAdvancesCurrent

trip:DeferredCustomerAdvancesCurrent


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value1737136385771159196346263164156
Percentage of DeferredCustomerAdvancesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

trip:DeferredCustomerPrepaymentsCurrent

trip:DeferredCustomerPrepaymentsCurrent


Deferred
Period End2020-12-312019-12-31
Value36159
Percentage of DeferredCustomerPrepaymentsCurrent100.0100.0

trip:DeferredTaxAssetsForeignAdvertisingSpend

trip:DeferredTaxAssetsForeignAdvertisingSpend


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value1515151310.08.09.0
Percentage of DeferredTaxAssetsForeignAdvertisingSpend100.0100.0100.0100.0100.0100.0100.0

trip:DeferredTaxAssetsInterestCarryforward

trip:DeferredTaxAssetsInterestCarryforward


Deferred
Period End2020-12-312019-12-312018-12-312017-12-31
Value3220147.0
Percentage of DeferredTaxAssetsInterestCarryforward100.0100.0100.0100.0

trip:DeferredTaxAssetsLeaseFinancingObligation

trip:DeferredTaxAssetsLeaseFinancingObligation


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value23242222333326
Percentage of DeferredTaxAssetsLeaseFinancingObligation100.0100.0100.0100.0100.0100.0100.0

trip:DeferredTaxLiabilitiesBuilding

trip:DeferredTaxLiabilitiesBuilding


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value20222320313126
Percentage of DeferredTaxLiabilitiesBuilding100.0100.0100.0100.0100.0100.0100.0

trip:GovernmentGrantsAndOtherAssistanceBenefitsReceivable us-gaap:BalanceSheetLocation, us-gaap:UnusualRiskOrUncertaintyByNature

trip:GovernmentGrantsAndOtherAssistanceBenefitsReceivable

us-gaap:PrepaidExpensesAndOtherCurrentAssets, trip:COVID19


Government
Period End2021-06-302021-03-312020-12-312020-09-30
Value2000000.03000000.02000000.05000000.0
Percentage of GovernmentGrantsAndOtherAssistanceBenefitsReceivable100.0100.0100.0100.0

trip:IncomeTaxesReceivableNetOperatingLossCARESAct us-gaap:StatementGeographical

trip:IncomeTaxesReceivableNetOperatingLossCARESAct

country:SG


Income
Period End2020-12-31
Value28
Percentage of IncomeTaxesReceivableNetOperatingLossCARESAct100.0

trip:LeaseAssetsNoncurrent

trip:LeaseAssetsNoncurrent


Lease
Period End2020-12-312019-12-31
Value149179
Percentage of LeaseAssetsNoncurrent100.0100.0

trip:LeaseLiabilities

trip:LeaseLiabilities


Lease
Period End2020-12-312019-12-31
Value143167
Percentage of LeaseLiabilities100.0100.0

trip:LeaseLiabilitiesCurrent

trip:LeaseLiabilitiesCurrent


Lease
Period End2020-12-312019-12-31
Value2625
Percentage of LeaseLiabilitiesCurrent100.0100.0

trip:LeaseLiabilitiesNoncurrent

trip:LeaseLiabilitiesNoncurrent


Lease
Period End2020-12-312019-12-31
Value117142
Percentage of LeaseLiabilitiesNoncurrent100.0100.0

trip:NonMarketableInvestments

trip:NonMarketableInvestments


Non
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value3839404041545512
Percentage of NonMarketableInvestments100.0100.0100.0100.0100.0100.0100.0100.0

trip:NumberOfHotelsAndAccommodationsReviewsAndOpinions

trip:NumberOfHotelsAndAccommodationsReviewsAndOpinions


Number
Period End2020-09-30
Value1500000.0
Percentage of NumberOfHotelsAndAccommodationsReviewsAndOpinions100.0

trip:NumberOfRestaurantReviewsAndOpinions

trip:NumberOfRestaurantReviewsAndOpinions


Number
Period End2020-09-30
Value4700000.0
Percentage of NumberOfRestaurantReviewsAndOpinions100.0

trip:PercentageOfDirectorsElectedByCommonStockHolders

trip:PercentageOfDirectorsElectedByCommonStockHolders


Percentage
Period End2020-12-31
Value25.0
Percentage of PercentageOfDirectorsElectedByCommonStockHolders100.0

trip:UndistributedEarningsOfForeignSubsidiariesNotToBePermanentlyReinvested

trip:UndistributedEarningsOfForeignSubsidiariesNotToBePermanentlyReinvested


Undistributed
Period End2020-12-31
Value376
Percentage of UndistributedEarningsOfForeignSubsidiariesNotToBePermanentlyReinvested100.0

trip:UnrecognizedTaxBenefitsIncludingInterestAccrued

trip:UnrecognizedTaxBenefitsIncludingInterestAccrued


Unrecognized
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value178167163156151148127108878578736838
Percentage of UnrecognizedTaxBenefitsIncludingInterestAccrued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedBonusesCurrentAndNoncurrent us-gaap:BalanceSheetLocation

us-gaap:AccruedBonusesCurrentAndNoncurrent

us-gaap:OtherNoncurrentLiabilities


Accrued
Period End2020-09-30
Value1000000.0
Percentage of AccruedBonusesCurrentAndNoncurrent100.0

us-gaap:AccruedIncomeTaxesNoncurrent

us-gaap:AccruedIncomeTaxesNoncurrent


Accrued
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value3.0313131313161
Percentage of AccruedIncomeTaxesNoncurrent100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedMarketingCostsCurrent

us-gaap:AccruedMarketingCostsCurrent


Accrued
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312018-12-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-312013-09-302013-06-302012-12-312011-12-31
Value5613201217273139694837406159433649362445212619116.194
Percentage of AccruedMarketingCostsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivable us-gaap:ValuationAllowancesAndReservesType

us-gaap:AllowanceForDoubtfulAccountsReceivable

us-gaap:AllowanceForCreditLoss


Allowance
Period End2020-12-312019-12-312018-12-312017-12-31
Value33252116
Percentage of AllowanceForDoubtfulAccountsReceivable100.0100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent


Allowance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value35343333322525242223211918171615119.09.09.06.06.06.08.08.07.07.06.04.03.03.33.3312.9182.832.8182.4823.2983.7675.375.184
Percentage of AllowanceForDoubtfulAccountsReceivableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForNotesAndLoansReceivableNoncurrent

us-gaap:AllowanceForNotesAndLoansReceivableNoncurrent


Allowance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value5000000.05000000.05000000.05000000.05000000.00
Percentage of AllowanceForNotesAndLoansReceivableNoncurrent100.0100.0100.0100.0100.00.0

us-gaap:CashAndCashEquivalentsFairValueDisclosure

us-gaap:CashAndCashEquivalentsFairValueDisclosure


Cash
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value775674418115507319838901771655663666635673750887731612611766653614455
Percentage of CashAndCashEquivalentsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStockCapitalSharesReservedForFutureIssuance us-gaap:PlanName

us-gaap:CommonStockCapitalSharesReservedForFutureIssuance

trip:TwoThousandEighteenStockAndAnnualIncentivePlan


Common
Period End2021-06-30
Value17
Percentage of CommonStockCapitalSharesReservedForFutureIssuance100.0

us-gaap:ContractWithCustomerAssetNetCurrent

us-gaap:ContractWithCustomerAssetNetCurrent


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value452413115.05.07.06.09.09.07.0
Percentage of ContractWithCustomerAssetNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerRefundLiabilityCurrent

us-gaap:ContractWithCustomerRefundLiabilityCurrent


Contract
Period End2021-03-312020-12-312020-03-312019-12-312019-03-312018-12-31
Value2.0116.02.01.02.0
Percentage of ContractWithCustomerRefundLiabilityCurrent100.0100.0100.0100.0100.0100.0

us-gaap:ContractualObligation

us-gaap:ContractualObligation


Contractual
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value18914218262262265266
Percentage of ContractualObligation100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractualObligation us-gaap:OtherCommitments

trip:ExpectedCommitmentFeePaymentsOnTwoThousandFifteenCreditFacility


Contractual
Period End2020-12-312019-12-312018-12-312016-12-31
Value9.04.06.07.0
Percentage of ContractualObligation4.828.62.82.7

trip:ExpectedInterestPaymentsOnSeniorNotes


Contractual
Period End2020-12-31
Value161
Percentage of ContractualObligation85.2

trip:PurchaseObligationsAndOther


Contractual
Period End2020-12-312019-12-312018-12-31
Value1910.019
Percentage of ContractualObligation10.171.48.7

us-gaap:ContractualObligationDueAfterFifthYear

us-gaap:ContractualObligationDueAfterFifthYear


Contractual
Period End2020-12-312018-12-312014-12-31
Value1.077148
Percentage of ContractualObligationDueAfterFifthYear100.0100.0100.0

us-gaap:ContractualObligationDueInFourthAndFifthYear

us-gaap:ContractualObligationDueInFourthAndFifthYear


Contractual
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value573.04762544944
Percentage of ContractualObligationDueInFourthAndFifthYear100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractualObligationDueInFourthAndFifthYear us-gaap:OtherCommitments

trip:ExpectedInterestPaymentsOnSeniorNotes


Contractual
Period End2020-12-31
Value55
Percentage of ContractualObligationDueInFourthAndFifthYear96.5

trip:PurchaseObligationsAndOther


Contractual
Period End2020-12-312019-12-312018-12-31
Value1.03.03.0
Percentage of ContractualObligationDueInFourthAndFifthYear1.8100.06.4

us-gaap:ContractualObligationDueInNextTwelveMonths

us-gaap:ContractualObligationDueInNextTwelveMonths


Contractual
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value465.03435292525
Percentage of ContractualObligationDueInNextTwelveMonths100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractualObligationDueInNextTwelveMonths us-gaap:OtherCommitments

trip:ExpectedCommitmentFeePaymentsOnTwoThousandFifteenCreditFacility


Contractual
Period End2020-12-312019-12-312018-12-312016-12-31
Value3.02.02.02.0
Percentage of ContractualObligationDueInNextTwelveMonths6.540.05.96.9

trip:ExpectedInterestPaymentsOnSeniorNotes


Contractual
Period End2020-12-31
Value35
Percentage of ContractualObligationDueInNextTwelveMonths76.1

trip:PurchaseObligationsAndOther


Contractual
Period End2020-12-312019-12-312018-12-31
Value8.03.07.0
Percentage of ContractualObligationDueInNextTwelveMonths17.460.020.6

us-gaap:ContractualObligationDueInSecondAndThirdYear

us-gaap:ContractualObligationDueInSecondAndThirdYear


Contractual
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value856.06069595249
Percentage of ContractualObligationDueInSecondAndThirdYear100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractualObligationDueInSecondAndThirdYear us-gaap:OtherCommitments

trip:ExpectedCommitmentFeePaymentsOnTwoThousandFifteenCreditFacility


Contractual
Period End2020-12-312019-12-312018-12-312016-12-31
Value5.02.03.04.0
Percentage of ContractualObligationDueInSecondAndThirdYear5.933.35.06.8

trip:ExpectedInterestPaymentsOnSeniorNotes


Contractual
Period End2020-12-31
Value71
Percentage of ContractualObligationDueInSecondAndThirdYear83.5

trip:PurchaseObligationsAndOther


Contractual
Period End2020-12-312019-12-312018-12-31
Value9.04.08.0
Percentage of ContractualObligationDueInSecondAndThirdYear10.666.713.3

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us-gaap:DebtInstrumentCarryingAmount

trip:SeniorNotesDueJulyFifteenTwoThousandAndTwentyFive


Debt
Period End2020-07-09
Value500
Percentage of DebtInstrumentCarryingAmount100.0

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trip:SeniorNotesDueJulyFifteenTwoThousandAndTwentyFive, trip:TwentyFifteenCreditFacility


Debt
Period End2020-09-30
Value500
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us-gaap:LongTermDebt


Debt
Period End2021-06-302021-03-312020-12-31
Value845845500
Percentage of DebtInstrumentCarryingAmount0.00.00.0

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us-gaap:DebtInstrumentFaceAmount

trip:SeniorNotesDueJulyFifteenTwoThousandAndTwentyFive, us-gaap:SubsequentEvent


Debt
Period End2020-07-09
Value500
Percentage of DebtInstrumentFaceAmount100.0

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us-gaap:DeferredFinanceCostsNet

us-gaap:RevolvingCreditFacility, us-gaap:InterestExpense, trip:TwentyFifteenCreditFacility


Deferred
Period End2020-12-31
Value2000000.0
Percentage of DeferredFinanceCostsNet100.0

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us-gaap:RevolvingCreditFacility, trip:TwentyFifteenCreditFacility


Deferred
Period End2020-12-312020-09-302020-06-30
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Percentage of DeferredFinanceCostsNet250.00.00.0

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trip:SeniorNotesDueJulyFifteenTwoThousandAndTwentyFive


Deferred
Period End2020-07-09
Value9000000.0
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trip:SeniorNotesDueJulyFifteenTwoThousandAndTwentyFive, us-gaap:FairValueInputsLevel2


Deferred
Period End2020-12-312020-09-30
Value9000000.010000000.0
Percentage of DeferredFinanceCostsNet450.00.0

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Deferred
Period End2020-09-30
Value10000000.0
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Deferred
Period End2021-06-302021-03-312020-12-31
Value8000000.08000000.09000000.0
Percentage of DeferredFinanceCostsNet0.00.0450.0

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Deferred
Period End2021-06-302021-03-31
Value5000000.06000000.0
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us-gaap:DeferredFinanceCostsNoncurrentGross

us-gaap:LongTermDebt


Deferred
Period End2021-06-302021-03-312020-12-31
Value13149.0
Percentage of DeferredFinanceCostsNoncurrentGross100.0100.0100.0

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us-gaap:LongTermDebt, trip:TwoThousandAndTwentyFiveSeniorNotes


Deferred
Period End2021-06-302021-03-312020-12-31
Value8.08.09.0
Percentage of DeferredFinanceCostsNoncurrentGross61.557.1100.0

us-gaap:LongTermDebt, trip:TwoThousandAndTwentySixSeniorNotes


Deferred
Period End2021-06-302021-03-31
Value5.06.0
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us-gaap:DeferredIncomeTaxAssetsNet

us-gaap:DeferredIncomeTaxAssetsNet


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value393310.05.06.07.07.02.01.0202728211816584737424425
Percentage of DeferredIncomeTaxAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value100104120117158150144534037
Percentage of DeferredIncomeTaxLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsGross


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value206175183174215177135594737
Percentage of DeferredTaxAssetsGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value8149385646313418159.415
Percentage of DeferredTaxAssetsOperatingLossCarryforwards100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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
Value31474436524043302117
Percentage of DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseOther

us-gaap:DeferredTaxAssetsTaxDeferredExpenseOther


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value201410.07.07.04.05.04.3654.2984.597
Percentage of DeferredTaxAssetsTaxDeferredExpenseOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value4.06.06.04.01212136.8296.8245.95
Percentage of DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value53515759838188312826
Percentage of DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DeferredTaxLiabilitiesOther


Deferred
Period End2020-12-312019-12-312014-12-312013-12-31
Value1000000.02000000.01000000.02000000.0
Percentage of DeferredTaxLiabilitiesOther100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesPrepaidExpenses

us-gaap:DeferredTaxLiabilitiesPrepaidExpenses


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value2000000.02000000.02000000.04000000.06000000.04000000.04000000.02010000.02087000.0923000.0
Percentage of DeferredTaxLiabilitiesPrepaidExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value24272221282725171010
Percentage of DeferredTaxLiabilitiesPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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us-gaap:DerivativeCapPrice

trip:SeniorNotesDueAprilOneTwoThousandAndTwentySix


Derivative
Period End2021-03-22
Value107.36
Percentage of DerivativeCapPrice100.0

us-gaap:DerivativeFairValueOfDerivativeAsset

us-gaap:DerivativeFairValueOfDerivativeAsset


Derivative
Period End2021-06-30
Value1000000.0
Percentage of DerivativeFairValueOfDerivativeAsset100.0

us-gaap:EmployeeRelatedLiabilitiesCurrent

us-gaap:EmployeeRelatedLiabilitiesCurrent


Employee
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312018-12-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-312013-09-302013-06-302012-12-312011-12-31
Value51493135307467604228534740324747372941433432262921
Percentage of EmployeeRelatedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions

trip:RestrictedStockUnitsAndMarketBasedRestrictedStockUnits


Employee
Period End2021-06-302021-03-312020-12-312020-09-30
Value181212160193
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions100.0100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions us-gaap:AwardType

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions

us-gaap:EmployeeStockOption


Employee
Period End2021-06-302021-03-312020-12-312020-09-302016-12-312015-12-312014-12-312014-09-30
Value242818224856840.087
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity

us-gaap:EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity


Equity
Period End2020-12-312019-12-31
Value-33000000.0-36000000.0
Percentage of EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity100.0100.0

us-gaap:EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:BalanceSheetLocation

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Equity
Period End2020-12-312019-11-30
Value-33000000.0-36000000.0
Percentage of EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity100.00.0

us-gaap:EquityMethodInvestments us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:BalanceSheetLocation

us-gaap:EquityMethodInvestments

trip:ChelseaInvestmentHoldingCompanyPTELtd, trip:NonMarketableInvestments


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value36373838394041
Percentage of EquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0

us-gaap:EquitySecuritiesWithoutReadilyDeterminableFairValueAmount

us-gaap:EquitySecuritiesWithoutReadilyDeterminableFairValueAmount


Equity
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-31
Value2.02.02.01414141212121214
Percentage of EquitySecuritiesWithoutReadilyDeterminableFairValueAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseLiability

us-gaap:FinanceLeaseLiability


Finance
Period End2020-12-312019-12-312019-09-302019-06-302019-03-31
Value7683848587
Percentage of FinanceLeaseLiability100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityCurrent

us-gaap:FinanceLeaseLiabilityCurrent


Finance
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-31
Value6000000.05000000.05000000.05000000.05000000.05000000.0
Percentage of FinanceLeaseLiabilityCurrent100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityNoncurrent

us-gaap:FinanceLeaseLiabilityNoncurrent


Finance
Period End2021-06-302021-03-312020-12-312019-12-312019-09-302019-06-30
Value687071787980
Percentage of FinanceLeaseLiabilityNoncurrent100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsDue

us-gaap:FinanceLeaseLiabilityPaymentsDue


Finance
Period End2020-12-31
Value96
Percentage of FinanceLeaseLiabilityPaymentsDue100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:FinanceLeaseLiabilityPaymentsDueAfterYearFive


Finance
Period End2020-12-31
Value46
Percentage of FinanceLeaseLiabilityPaymentsDueAfterYearFive100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:FinanceLeaseLiabilityPaymentsDueNextTwelveMonths


Finance
Period End2020-12-31
Value10000000.0
Percentage of FinanceLeaseLiabilityPaymentsDueNextTwelveMonths100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFive

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFive


Finance
Period End2020-12-31
Value10000000.0
Percentage of FinanceLeaseLiabilityPaymentsDueYearFive100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFour

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFour


Finance
Period End2020-12-31
Value10000000.0
Percentage of FinanceLeaseLiabilityPaymentsDueYearFour100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueYearThree

us-gaap:FinanceLeaseLiabilityPaymentsDueYearThree


Finance
Period End2020-12-31
Value10000000.0
Percentage of FinanceLeaseLiabilityPaymentsDueYearThree100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueYearTwo

us-gaap:FinanceLeaseLiabilityPaymentsDueYearTwo


Finance
Period End2020-12-31
Value10000000.0
Percentage of FinanceLeaseLiabilityPaymentsDueYearTwo100.0

us-gaap:FinanceLeaseLiabilityUndiscountedExcessAmount

us-gaap:FinanceLeaseLiabilityUndiscountedExcessAmount


Finance
Period End2020-12-31
Value20
Percentage of FinanceLeaseLiabilityUndiscountedExcessAmount100.0

us-gaap:FinanceLeaseRightOfUseAsset

us-gaap:FinanceLeaseRightOfUseAsset


Finance
Period End2020-12-312019-12-31
Value95105
Percentage of FinanceLeaseRightOfUseAsset100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-312013-09-302013-06-302012-12-312011-12-31
Value214208206194184176173160155147140131124120112107978780776861524334241825181413151375
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization us-gaap:FiniteLivedIntangibleAssetsByMajorClass

trip:SubscriberRelationships


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312013-09-302013-06-302012-12-312011-12-31
Value35292522159.08.07.05.04.05.8585.1244.273.51114
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization17.016.817.919.618.817.318.620.620.822.239.939.426.726.019.1

trip:TechnologyBasedAndOther


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-312013-09-302013-06-302012-12-312011-12-31
Value474434272014129.06.04.04.01.01.3521.0521.3140.95252
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us-gaap:CustomerRelationships


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value83655343312015117.05.0118.06.0
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us-gaap:TrademarksAndTradeNames


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value41352820149.08.07.06.05.010.09.07.0
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us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive


Finite
Period End2020-12-31
Value3000000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths


Finite
Period End2020-12-31
Value20
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive


Finite
Period End2020-12-31
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us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour


Finite
Period End2020-12-31
Value6000000.0
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us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree


Finite
Period End2020-12-31
Value10000000.0
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us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo


Finite
Period End2020-12-31
Value13
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us-gaap:FiniteLivedIntangibleAssetsGross

us-gaap:FiniteLivedIntangibleAssetsGross


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-312013-09-302013-06-302012-12-312011-12-31
Value2622532282242171981992031902021951013633372189
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us-gaap:FiniteLivedIntangibleAssetsGross us-gaap:FiniteLivedIntangibleAssetsByMajorClass

trip:SubscriberRelationships


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312013-09-302013-06-302012-12-312011-12-31
Value424034353329303029311313135.61719
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trip:TechnologyBasedAndOther


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-312013-09-302013-06-302012-12-312011-12-31
Value575649444434343634423110.04.4042.7933.2621.33453
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us-gaap:CustomerRelationships


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value1049888878482828376771026214
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us-gaap:TrademarksAndTradeNames


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value59595758565353545152622918
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us-gaap:GoodwillImpairedAccumulatedImpairmentLoss

us-gaap:GoodwillImpairedAccumulatedImpairmentLoss


Goodwill
Period End2020-12-31
Value3000000.0
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us-gaap:IncomeTaxReceivable

us-gaap:IncomeTaxReceivable


Income
Period End2021-06-302021-03-312020-12-312014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
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us-gaap:IncomeTaxReceivable us-gaap:StatementGeographical

country:SG


Income
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us-gaap:IncomeTaxesReceivable

us-gaap:IncomeTaxesReceivable


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value4750505055264.0
Percentage of IncomeTaxesReceivable100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestPayableCurrent

us-gaap:InterestPayableCurrent


Interest
Period End2021-06-302020-12-312020-09-30
Value17189.0
Percentage of InterestPayableCurrent100.0100.0100.0

us-gaap:InterestPayableCurrent us-gaap:BalanceSheetLocation, us-gaap:LongtermDebtType

trip:AccruedExpensesAndOtherCurrentLiabilities, trip:TwentyFifteenCreditFacility


Interest
Period End2020-09-30
Value1.0
Percentage of InterestPayableCurrent11.1

us-gaap:InterestPayableCurrent us-gaap:DebtInstrument

trip:SeniorNotesDueJulyFifteenTwoThousandAndTwentyFive


Interest
Period End2021-06-302021-03-312020-07-09
Value168.017
Percentage of InterestPayableCurrent94.10.00.0

us-gaap:InterestPayableCurrent us-gaap:DebtInstrument, us-gaap:LongtermDebtType

trip:SeniorNotesDueJulyFifteenTwoThousandAndTwentyFive, trip:TwentyFifteenCreditFacility


Interest
Period End2020-09-30
Value8.0
Percentage of InterestPayableCurrent88.9

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths


Lessee
Period End2020-12-31
Value25
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths100.0

us-gaap:LettersOfCreditOutstandingAmount us-gaap:CreditFacility, us-gaap:LongtermDebtType

us-gaap:LettersOfCreditOutstandingAmount

us-gaap:LetterOfCredit, trip:TwentyFifteenCreditFacility


Letters
Period End2021-06-302021-03-312020-12-312020-09-302019-12-312018-12-312017-12-312016-12-312015-12-31
Value4000000.04000000.03000000.03000000.03000000.03000000.03000000.03000000.02000000.0
Percentage of LettersOfCreditOutstandingAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity us-gaap:CreditFacility, us-gaap:LongtermDebtType, us-gaap:TypeOfArrangement

us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity

us-gaap:RevolvingCreditFacility, trip:TwentyFifteenCreditFacility, trip:AmendedCreditAgreementOnDecember17th2020


Line
Period End2020-12-17
Value500
Percentage of LineOfCreditFacilityMaximumBorrowingCapacity100.0

us-gaap:NotesPayableFairValueDisclosure us-gaap:DebtInstrument, us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:NotesPayableFairValueDisclosure

trip:SeniorNotesDueJulyFifteenTwoThousandAndTwentyFive, us-gaap:FairValueInputsLevel2


Notes
Period End2020-12-312020-09-30
Value542523
Percentage of NotesPayableFairValueDisclosure100.0100.0

us-gaap:NotesPayableFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:LongtermDebtType

us-gaap:FairValueInputsLevel2, trip:TwoThousandAndTwentyFiveSeniorNotes


Notes
Period End2021-06-302021-03-312020-12-31
Value540541542
Percentage of NotesPayableFairValueDisclosure0.00.0100.0

us-gaap:FairValueInputsLevel2, trip:TwoThousandAndTwentySixSeniorNotes


Notes
Period End2021-06-302021-03-31
Value325364
Percentage of NotesPayableFairValueDisclosure0.00.0

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent


Operating
Period End2020-12-312019-12-31
Value3.994.11
Percentage of OperatingLeaseWeightedAverageDiscountRatePercent100.0100.0

us-gaap:OperatingLossCarryforwards us-gaap:IncomeTaxAuthority

us-gaap:OperatingLossCarryforwards

us-gaap:DomesticCountry


Operating
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value4.04.06.09.02316421210.0
Percentage of OperatingLossCarryforwards100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ForeignCountry


Operating
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value29720112617112485845149
Percentage of OperatingLossCarryforwards7425.05025.02100.01900.0539.1531.2200.0408.0493.0

us-gaap:StateAndLocalJurisdiction


Operating
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value208323941471336127.3
Percentage of OperatingLossCarryforwards5200.0800.0650.0455.6204.381.285.799.273.0

us-gaap:OtherSundryLiabilitiesNoncurrent

us-gaap:OtherSundryLiabilitiesNoncurrent


Other
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value9.04.05.07.05.0202118181919191918176.0
Percentage of OtherSundryLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestructuringReserveCurrent

us-gaap:RestructuringReserveCurrent


Restructuring
Period End2020-09-302020-06-302019-12-31
Value2000000.07000000.01000000.0
Percentage of RestructuringReserveCurrent100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber

trip:MarketBasedRestrictedStockUnits


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0.1740.1740.1740.4630.4980.5220.3890.3620.3620.3620.2840.2840.2840.2840.213
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestrictedStockUnitsRSU


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312011-12-31
Value6.7597.5228.1118.7198.048108.4696.967.1247.3436.646.8967.1177.2256.0155.5885.7355.7922.8562.9282.9312.8391.751.5741.5681.5851.4481.3821.3181.3321.1351.121.0940.9950.4460.926
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber3884.54323.04661.51883.21616.11995.02177.11922.71968.02028.52338.02428.22506.02544.02823.90.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

trip:MarketBasedRestrictedStockUnits


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value37.2937.2937.2935.9236.7137.7140.9941.7641.7641.7637.4137.4137.4137.4130.04
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestrictedStockUnitsRSU


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312011-12-312011-12-20
Value36.1935.532.2932.6534.9636.3445.4247.3947.747.5544.9344.9544.8745.1848.1450.8451.7252.6569.3570.5271.2171.9579.0278.0678.3578.1871.3369.7967.6966.4649.6447.2745.1342.9926.1121.3221.09
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue97.195.286.690.995.296.4110.8113.5114.2113.9120.1120.2119.9120.8160.30.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber

us-gaap:EmployeeStockOption


Share
Period End2021-06-302021-03-312020-12-312020-09-30
Value3341000.03203000.03293000.03360000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice

us-gaap:EmployeeStockOption


Share
Period End2021-06-302021-03-312020-12-312020-09-30
Value54.6555.6455.8755.74
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue

us-gaap:EmployeeStockOption


Share
Period End2021-06-302021-03-312020-12-31
Value19623.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue

us-gaap:EmployeeStockOption


Share
Period End2021-06-302021-03-312020-12-31
Value19623.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber

us-gaap:EmployeeStockOption


Share
Period End2021-06-302021-03-312020-12-312020-09-30
Value5507000.05592000.05615000.05886000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice

us-gaap:EmployeeStockOption


Share
Period End2021-06-302021-03-312020-12-312020-09-30
Value47.8347.6646.3146.52
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice100.0100.0100.0100.0

us-gaap:SharePrice us-gaap:AwardType

us-gaap:SharePrice

us-gaap:EmployeeStockOption


Share
Period End2021-06-302021-03-312020-09-30
Value40.353.7919.59
Percentage of SharePrice100.0100.0100.0

us-gaap:SharePrice us-gaap:AwardType, us-gaap:PlanName

us-gaap:EmployeeStockOption, trip:TwoThousandEighteenIncentivePlan


Share
Period End2020-12-31
Value28.78
Percentage of SharePrice0.0

us-gaap:SharePrice us-gaap:DebtInstrument

trip:SeniorNotesDueAprilOneTwoThousandAndTwentySix


Share
Period End2021-03-22
Value53.68
Percentage of SharePrice0.0

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueNonvested us-gaap:AwardType

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueNonvested

trip:MarketBasedRestrictedStockUnits


Sharebased
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value7.09.05.09.09.09.01214171915151612
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueNonvested100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestrictedStockUnitsRSU


Sharebased
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value273405233171153181258271332381358352397295
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueNonvested3900.04500.04660.01900.01700.02011.12150.01935.71952.92005.32386.72346.72481.22458.3

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1 us-gaap:AwardType

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1

us-gaap:EmployeeStockOption


Sharebased
Period End2021-06-302021-03-31
Value6.022
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1100.0100.0

us-gaap:StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1

us-gaap:StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-11-012019-09-302018-12-312018-03-31
Value757575757575190250150150240
Percentage of StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UndistributedEarningsOfForeignSubsidiaries

us-gaap:UndistributedEarningsOfForeignSubsidiaries


Undistributed
Period End2020-12-312017-12-312012-12-312011-12-31
Value118882371258
Percentage of UndistributedEarningsOfForeignSubsidiaries100.0100.0100.0100.0

us-gaap:UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued

us-gaap:UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued


Unrecognized
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value352920139.06.04.02.0
Percentage of UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued

us-gaap:UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued


Unrecognized
Period End2021-03-312020-09-302020-06-30
Value372537
Percentage of UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued100.0100.0100.0

us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate

us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate


Unrecognized
Period End2020-12-31
Value74
Percentage of UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate100.0

Line plots across dimensions of each concept


TTM Greenblatt ROC
_
(None,)
T T M  Greenblatt  R O C_
us-gaap:AllocatedShareBasedCompensationExpense
us-gaap:IncomeStatementLocation
(None,)
Allocated Share Based Compensation Expenseus-gaap: Income Statement Location
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
(None, 'trip:HotelsMediaAndPlatformSegment')
Revenue From Contract With Customer Excluding Assessed Taxus-gaap: Product Or Service, us-gaap: Statement Business Segments
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:StatementBusinessSegments
(None,)
Revenue From Contract With Customer Excluding Assessed Taxus-gaap: Statement Business Segments
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
('us-gaap:OperatingSegments', None)
Revenue From Contract With Customer Excluding Assessed Taxus-gaap: Consolidation Items, us-gaap: Statement Business Segments
us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents
(None,)
Stockholders Equityus-gaap: Statement Equity Components
us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType
(None,)
Property Plant And Equipment Grossus-gaap: Property Plant And Equipment By Type
us-gaap:PropertyPlantAndEquipmentNet
us-gaap:StatementGeographical
(None,)
Property Plant And Equipment Netus-gaap: Statement Geographical
us-gaap:Goodwill
us-gaap:StatementBusinessSegments
(None,)
Goodwillus-gaap: Statement Business Segments
us-gaap:Goodwill
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
('us-gaap:OperatingSegments', None)
Goodwillus-gaap: Consolidation Items, us-gaap: Statement Business Segments
us-gaap:FiniteLivedIntangibleAssetsNet
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
(None,)
Finite Lived Intangible Assets Netus-gaap: Finite Lived Intangible Assets By Major Class
us-gaap:LongTermDebt
us-gaap:FinancialInstrument, us-gaap:LongtermDebtType
('us-gaap:LongTermDebt', None)
Long Term Debtus-gaap: Financial Instrument, us-gaap: Longterm Debt Type
us-gaap:LongTermDebtNoncurrent
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:LongtermDebtType
('us-gaap:FairValueInputsLevel2', None)
Long Term Debt Noncurrentus-gaap: Fair Value By Fair Value Hierarchy Level, us-gaap: Longterm Debt Type
us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents
(None,)
Stockholders Equityus-gaap: Statement Equity Components