Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies (Details)

v2.4.1.9
Summary of Significant Accounting Policies (Details) (USD $)
In Millions, except Share data, unless otherwise specified
0 Months Ended 12 Months Ended
Aug. 27, 2014
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Period accounts receivable are generally due   30 days    
Allowance for doubtful accounts   $ 7us-gaap_AllowanceForDoubtfulAccountsReceivable $ 4us-gaap_AllowanceForDoubtfulAccountsReceivable  
Inventory valuation allowance   3us-gaap_InventoryValuationReserves 2us-gaap_InventoryValuationReserves  
Inventory written down   3us-gaap_InventoryWriteDown 3us-gaap_InventoryWriteDown  
Previously Reserved Inventory   4ltrpa_PreviouslyReservedInventory    
Maximum invested cash maturity period   18 months    
Maximum security maturity period   3 years    
Total property and equipment   187us-gaap_PropertyPlantAndEquipmentGross 55us-gaap_PropertyPlantAndEquipmentGross  
Foreign currency exchange loss   10.0us-gaap_ForeignCurrencyTransactionGainLossRealized 0us-gaap_ForeignCurrencyTransactionGainLossRealized  
Sales returns and allowance   2us-gaap_SalesReturnsAndAllowancesGoods 3us-gaap_SalesReturnsAndAllowancesGoods 4us-gaap_SalesReturnsAndAllowancesGoods
Advertising expense   357us-gaap_AdvertisingExpense 251us-gaap_AdvertisingExpense 32us-gaap_AdvertisingExpense
Stock-based compensation   74us-gaap_AllocatedShareBasedCompensationExpense 60us-gaap_AllocatedShareBasedCompensationExpense  
Deferred merchant payables   93ltrpa_Ltrpa_DeferredMerchantPayables 30ltrpa_Ltrpa_DeferredMerchantPayables  
Payable balance acquired with business acquisition   76ltrpa_Ltrpa_BusinessCombinationAcquiredCustomerAdvances    
Trade and other receivables, net   153us-gaap_ReceivablesNetCurrent 122us-gaap_ReceivablesNetCurrent  
Service And Other Revenue   1,246ltrpa_ServiceAndOtherRevenue 945ltrpa_ServiceAndOtherRevenue 36ltrpa_ServiceAndOtherRevenue
Pro Forma Earnings per Share (EPS)        
Common stock shares issued 73,685,924us-gaap_StockIssuedDuringPeriodSharesNewIssues      
Basic EPS (In Shares)   74,000,000us-gaap_WeightedAverageNumberOfSharesOutstandingBasic    
Diluted EPS (In Shares)   74,000,000us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding    
Previously Reported        
Revenue from Expedia     217ltrpa_RevenueFromRelatedParty
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioPreviouslyReportedMember
8ltrpa_RevenueFromRelatedParty
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioPreviouslyReportedMember
Adjustment        
Trade and other receivables, net     16us-gaap_ReceivablesNetCurrent
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioAdjustmentMember
 
Revenue | Customer | Expedia and Priceline        
Customer concentration (as a percent)   46.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_MajorCustomersAxis
= ltrpa_ExpediaAndPricelineMember
47.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_MajorCustomersAxis
= ltrpa_ExpediaAndPricelineMember
 
Accounts Receivable | Customer | Expedia        
Customer concentration (as a percent)   15.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_AccountsReceivableMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_MajorCustomersAxis
= ltrpa_ExpediaMember
14.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_AccountsReceivableMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_MajorCustomersAxis
= ltrpa_ExpediaMember
 
Operating expense        
Stock-based compensation   32us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_OperatingExpenseMember
26us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_OperatingExpenseMember
 
Selling, general and administrative        
Stock-based compensation   42us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_SellingGeneralAndAdministrativeExpensesMember
34us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_SellingGeneralAndAdministrativeExpensesMember
 
Furniture and other equipment        
Total property and equipment   14us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_FurnitureAndFixturesMember
10us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_FurnitureAndFixturesMember
 
Computer equipment        
Total property and equipment   50us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_ComputerEquipmentMember
26us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_ComputerEquipmentMember
 
Leasehold improvements        
Total property and equipment   34us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_LeaseholdImprovementsMember
13us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_LeaseholdImprovementsMember
 
Construction in progess        
Total property and equipment   $ 89us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_ConstructionInProgressMember
$ 6us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_ConstructionInProgressMember
 
Computer equipment, equipment and furniture and other equipment | Minimum        
Property estimated useful life   3 years    
Computer equipment, equipment and furniture and other equipment | Maximum        
Property estimated useful life   5 years