Annual report pursuant to Section 13 and 15(d)

Stock Based Compensation (Details)

v2.4.1.9
Stock Based Compensation (Details) (USD $)
 12 Months Ended 0 Months Ended 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 21, 2011
Dec. 21, 2018
Dec. 21, 2019
Dec. 31, 2012
Aug. 27, 2014
Additional disclosures              
Stock-based compensation $ 74,000,000us-gaap_AllocatedShareBasedCompensationExpense $ 60,000,000us-gaap_AllocatedShareBasedCompensationExpense          
Series A              
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]              
Granted 17,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		           
Exercised (773,000)us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		           
Options issued in the Trip Spin-Off 1,846,000ltrpa_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsForSpinOffInPeriodGross
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		           
Options outstanding 1,090,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		           
Optons exercisable 698,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		           
WAEP              
Weighted average exercise price, options granted (in dollars per share) $ 24.23us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		           
Weighted average exercise price, options exercised (in dollars per share) $ 14.06us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		           
Weighted average exercise price, options issued in the Trip Spin-Off (in dollars per share) $ 13.90ltrpa_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantedForSpinOffInPeriodWeightedAverageExercisePrice
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		           
Weighted average exercise price, options outstanding (in dollars per share) $ 13.94us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		           
Weighted average exercise price, options exercisable (in dollars per share) $ 13.37us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		           
Weighted average remaining contractual term outstanding 4 years 3 months 18 days            
Weighted average remaining contractual term exercisable 3 years 10 months 24 days            
Outstanding, aggregate intrinsic value 14,000,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		           
Exercisable, aggregate intrinsic value 9,000,000us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		           
Series B              
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]              
Granted 1,797,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember 		           
Exercised (44,000)us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember 		           
Options issued in the Trip Spin-Off 44,000ltrpa_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsForSpinOffInPeriodGross
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember 		           
Options outstanding 1,797,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember 		           
WAEP              
Weighted average exercise price, options granted (in dollars per share) $ 27.83us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember 		           
Weighted average exercise price, options exercised (in dollars per share) $ 11.21us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember 		           
Weighted average exercise price, options issued in the Trip Spin-Off (in dollars per share) $ 11.21ltrpa_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantedForSpinOffInPeriodWeightedAverageExercisePrice
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember 		           
Weighted average exercise price, options outstanding (in dollars per share) $ 27.83us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember 		           
Weighted average remaining contractual term outstanding 10 years            
Trip Advisor              
Additional disclosures              
Stock-based compensation 73,000,000us-gaap_AllocatedShareBasedCompensationExpense
/ dei_LegalEntityAxis
= ltrpa_TripadvisorIncMember 		           
2011 Plan | Trip Advisor              
Fair value assumptions              
Expected term 5 years 9 months 18 days 6 years 1 month 6 days 6 years 2 months 12 days        
Volatility rate (as a percent) 44.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
/ dei_LegalEntityAxis
= ltrpa_TripadvisorIncMember
/ us-gaap_PlanNameAxis
= ltrpa_IncentivePlan2011Member 		50.80%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
/ dei_LegalEntityAxis
= ltrpa_TripadvisorIncMember
/ us-gaap_PlanNameAxis
= ltrpa_IncentivePlan2011Member 		53.50%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
/ dei_LegalEntityAxis
= ltrpa_TripadvisorIncMember
/ us-gaap_PlanNameAxis
= ltrpa_IncentivePlan2011Member 		       
Dividend     0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageExpectedDividend
/ dei_LegalEntityAxis
= ltrpa_TripadvisorIncMember
/ us-gaap_PlanNameAxis
= ltrpa_IncentivePlan2011Member 		       
Additional disclosures              
Fair value of stock options granted     136,000,000ltrpa_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGrantDateFairValue
/ dei_LegalEntityAxis
= ltrpa_TripadvisorIncMember
/ us-gaap_PlanNameAxis
= ltrpa_IncentivePlan2011Member 		       
Weighted average grant date fair value, options (in dollars per share)     $ 17.78us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ dei_LegalEntityAxis
= ltrpa_TripadvisorIncMember
/ us-gaap_PlanNameAxis
= ltrpa_IncentivePlan2011Member 		       
Fair value of stock options vested     61,000,000us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1
/ dei_LegalEntityAxis
= ltrpa_TripadvisorIncMember
/ us-gaap_PlanNameAxis
= ltrpa_IncentivePlan2011Member 		       
Unvested value not yet recognized     75,000,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
/ dei_LegalEntityAxis
= ltrpa_TripadvisorIncMember
/ us-gaap_PlanNameAxis
= ltrpa_IncentivePlan2011Member 		       
Weighted average period the unrecognized compensation cost will be recognized     3 years        
2014 Plan              
Additional disclosures              
Unvested value not yet recognized 25,000,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
/ us-gaap_PlanNameAxis
= ltrpa_IncentivePlan2014Member 		           
Weighted average period the unrecognized compensation cost will be recognized 2 years 10 months 24 days            
Restricted Stock Units (RSUs) | 2011 Plan | Trip Advisor              
Additional disclosures              
RSUs granted (in shares) 800,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ dei_LegalEntityAxis
= ltrpa_TripadvisorIncMember
/ us-gaap_PlanNameAxis
= ltrpa_IncentivePlan2011Member 		           
Weighted average grant date fair value (in dollars per share) $ 93.36ltrpa_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantedInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ dei_LegalEntityAxis
= ltrpa_TripadvisorIncMember
/ us-gaap_PlanNameAxis
= ltrpa_IncentivePlan2011Member 		           
Weighted average grant date fair value, unvested, RSUs (in dollars per share) $ 71.33us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ dei_LegalEntityAxis
= ltrpa_TripadvisorIncMember
/ us-gaap_PlanNameAxis
= ltrpa_IncentivePlan2011Member 		           
Unvested RSUs (in shares) 1,400,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ dei_LegalEntityAxis
= ltrpa_TripadvisorIncMember
/ us-gaap_PlanNameAxis
= ltrpa_IncentivePlan2011Member 		           
Unrecognized compensation cost, unvested RSUs 70,000,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ dei_LegalEntityAxis
= ltrpa_TripadvisorIncMember
/ us-gaap_PlanNameAxis
= ltrpa_IncentivePlan2011Member 		           
Weighted average period the unrecognized compensation cost will be recognized 2 years 10 months 24 days            
Stock Options | TSAP              
Stock-Based Compensation              
Maximum number of shares             1,100,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= ltrpa_LibertyTripadvisorHoldingIncTransitionalStockAdjustmentPlanMember
Stock Options | 2011 Plan | Trip Advisor              
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]              
Options outstanding 9,470,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ dei_LegalEntityAxis
= ltrpa_TripadvisorIncMember
/ us-gaap_PlanNameAxis
= ltrpa_IncentivePlan2011Member 		           
Assumed options from acquisition 101,000ltrpa_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAssumedFromAcquisition
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ dei_LegalEntityAxis
= ltrpa_TripadvisorIncMember
/ us-gaap_PlanNameAxis
= ltrpa_IncentivePlan2011Member 		           
Granted 579,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ dei_LegalEntityAxis
= ltrpa_TripadvisorIncMember
/ us-gaap_PlanNameAxis
= ltrpa_IncentivePlan2011Member 		           
Exercised (1,202,000)us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ dei_LegalEntityAxis
= ltrpa_TripadvisorIncMember
/ us-gaap_PlanNameAxis
= ltrpa_IncentivePlan2011Member 		           
Cancelled or expired (297,000)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ dei_LegalEntityAxis
= ltrpa_TripadvisorIncMember
/ us-gaap_PlanNameAxis
= ltrpa_IncentivePlan2011Member 		           
Options outstanding 8,651,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ dei_LegalEntityAxis
= ltrpa_TripadvisorIncMember
/ us-gaap_PlanNameAxis
= ltrpa_IncentivePlan2011Member 		           
Optons exercisable 4,080,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ dei_LegalEntityAxis
= ltrpa_TripadvisorIncMember
/ us-gaap_PlanNameAxis
= ltrpa_IncentivePlan2011Member 		           
WAEP              
Weighted average exercise price, options outstanding (in dollars per share) $ 40.18us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ dei_LegalEntityAxis
= ltrpa_TripadvisorIncMember
/ us-gaap_PlanNameAxis
= ltrpa_IncentivePlan2011Member 		           
Weighted average exercise price, options assumed from acquisition $ 16.36ltrpa_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsAssumedFromAcquisitionWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ dei_LegalEntityAxis
= ltrpa_TripadvisorIncMember
/ us-gaap_PlanNameAxis
= ltrpa_IncentivePlan2011Member 		           
Weighted average exercise price, options granted (in dollars per share) $ 95.87us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ dei_LegalEntityAxis
= ltrpa_TripadvisorIncMember
/ us-gaap_PlanNameAxis
= ltrpa_IncentivePlan2011Member 		           
Weighted average exercise price, options exercised (in dollars per share) $ 32.87us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ dei_LegalEntityAxis
= ltrpa_TripadvisorIncMember
/ us-gaap_PlanNameAxis
= ltrpa_IncentivePlan2011Member 		           
Weighted average exercise price, options forfeited/cancelled (in dollars per share) $ 45.40us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ dei_LegalEntityAxis
= ltrpa_TripadvisorIncMember
/ us-gaap_PlanNameAxis
= ltrpa_IncentivePlan2011Member 		           
Weighted average exercise price, options outstanding (in dollars per share) $ 44.47us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ dei_LegalEntityAxis
= ltrpa_TripadvisorIncMember
/ us-gaap_PlanNameAxis
= ltrpa_IncentivePlan2011Member 		           
Weighted average exercise price, options exercisable (in dollars per share) $ 32.05us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ dei_LegalEntityAxis
= ltrpa_TripadvisorIncMember
/ us-gaap_PlanNameAxis
= ltrpa_IncentivePlan2011Member 		           
Weighted average remaining contractual term outstanding 5 years            
Weighted average remaining contractual term exercisable 2 years 8 months 12 days            
Outstanding, aggregate intrinsic value 273,000,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ dei_LegalEntityAxis
= ltrpa_TripadvisorIncMember
/ us-gaap_PlanNameAxis
= ltrpa_IncentivePlan2011Member 		           
Exercisable, aggregate intrinsic value 174,000,000us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ dei_LegalEntityAxis
= ltrpa_TripadvisorIncMember
/ us-gaap_PlanNameAxis
= ltrpa_IncentivePlan2011Member 		           
Stock Options | 2014 Plan              
Stock-Based Compensation              
Maximum number of shares 6,700,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= ltrpa_IncentivePlan2014Member 		           
Fair value assumptions              
Volatility rate, minimum (as a percent) 43.70%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMinimum
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= ltrpa_IncentivePlan2014Member 		           
Volatility rate, maximum (as a percent) 45.90%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMaximum
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= ltrpa_IncentivePlan2014Member 		           
Dividend 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageExpectedDividend
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= ltrpa_IncentivePlan2014Member 		           
Additional disclosures              
Stock options exercised intrinsic value 10,700,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= ltrpa_IncentivePlan2014Member 		           
Stock Options | 2014 Plan | Series A              
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]              
Granted 17,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= ltrpa_IncentivePlan2014Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		           
WAEP              
Weighted average exercise price, grant date fair value (in dollars per share) $ 11.01us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= ltrpa_IncentivePlan2014Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember 		           
Stock Options | 2014 Plan | Series A | Tranche Three              
Stock-Based Compensation              
Vesting period 2 years            
Stock Options | 2014 Plan | Series B              
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]              
Granted 1,797,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= ltrpa_IncentivePlan2014Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember 		           
WAEP              
Weighted average exercise price, grant date fair value (in dollars per share) $ 13.94us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= ltrpa_IncentivePlan2014Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember 		           
Stock Options | 2014 Plan | Series B | CEO              
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]              
Granted 1,800,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= ltrpa_IncentivePlan2014Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ChiefExecutiveOfficerMember 		           
Stock Options | 2014 Plan | Series B | CEO | Tranche One              
Stock-Based Compensation              
Vesting percentage       50.00%us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= ltrpa_IncentivePlan2014Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ChiefExecutiveOfficerMember
/ us-gaap_VestingAxis
= us-gaap_ShareBasedCompensationAwardTrancheOneMember 		     
Stock Options | 2014 Plan | Series B | CEO | Tranche Two              
Stock-Based Compensation              
Vesting percentage         50.00%us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= ltrpa_IncentivePlan2014Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ChiefExecutiveOfficerMember
/ us-gaap_VestingAxis
= us-gaap_ShareBasedCompensationAwardTrancheTwoMember 		   
Stock Options | 2014 Plan | Buy Seasons              
Additional disclosures              
Stock options exercised intrinsic value   1,600,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ dei_LegalEntityAxis
= ltrpa_BuyseasonsMember
/ us-gaap_PlanNameAxis
= ltrpa_IncentivePlan2014Member 		      4,600,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ dei_LegalEntityAxis
= ltrpa_BuyseasonsMember
/ us-gaap_PlanNameAxis
= ltrpa_IncentivePlan2014Member 		 
Employee Stock Option Excluding Assumed Options | 2011 Plan | Trip Advisor              
Stock-Based Compensation              
Vesting period 4 years            
Term of awards 10 years            
Number of shares available for grant 17,691,977us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
/ us-gaap_AwardTypeAxis
= ltrpa_EmployeeStockOptionExcludingAssumedOptionsMember
/ dei_LegalEntityAxis
= ltrpa_TripadvisorIncMember
/ us-gaap_PlanNameAxis
= ltrpa_IncentivePlan2011Member 		           
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]              
Granted 600,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_AwardTypeAxis
= ltrpa_EmployeeStockOptionExcludingAssumedOptionsMember
/ dei_LegalEntityAxis
= ltrpa_TripadvisorIncMember
/ us-gaap_PlanNameAxis
= ltrpa_IncentivePlan2011Member 		           
WAEP              
Weighted average exercise price, grant date fair value (in dollars per share) $ 46.65us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= ltrpa_EmployeeStockOptionExcludingAssumedOptionsMember
/ dei_LegalEntityAxis
= ltrpa_TripadvisorIncMember
/ us-gaap_PlanNameAxis
= ltrpa_IncentivePlan2011Member 		           
Additional disclosures              
Unvested value not yet recognized $ 89,000,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
/ us-gaap_AwardTypeAxis
= ltrpa_EmployeeStockOptionExcludingAssumedOptionsMember
/ dei_LegalEntityAxis
= ltrpa_TripadvisorIncMember
/ us-gaap_PlanNameAxis
= ltrpa_IncentivePlan2011Member 		           
Weighted average period the unrecognized compensation cost will be recognized 2 years 8 months 12 days            
Minimum | Stock Options | 2014 Plan              
Stock-Based Compensation              
Vesting period 4 years            
Term of awards 7 years            
Fair value assumptions              
Expected term 6 years 3 months 18 days            
Maximum | Stock Options | 2014 Plan              
Stock-Based Compensation              
Vesting period 5 years            
Term of awards 10 years            
Fair value assumptions              
Expected term 7 years 3 months 18 days