Annual report pursuant to Section 13 and 15(d)

Income Taxes (Details 2)

v2.4.1.9
Income Taxes (Details 2) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Operating loss carryforwards    
Gross net operating loss carryforwards $ 245us-gaap_OperatingLossCarryforwards  
Net operating loss carryforwards 48us-gaap_DeferredTaxAssetsOperatingLossCarryforwards 27us-gaap_DeferredTaxAssetsOperatingLossCarryforwards
Unrecognized tax benefits allowance 67ltrpa_UnrecognizedTaxBenefitsAllowance  
Unrecognized tax benefit that would impact effective rate 65us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate  
Unrecognized tax benefits    
Balance at beginning of year 36us-gaap_UnrecognizedTaxBenefits 24us-gaap_UnrecognizedTaxBenefits
Additions based on tax positions related to the current year 13us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions 12us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions
Additions for tax positions of prior years 18us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions 4us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions
Reductions for tax positions of prior years   (4)us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions
Balance at end of year 67us-gaap_UnrecognizedTaxBenefits 36us-gaap_UnrecognizedTaxBenefits
Accrued interest and penalties related to uncertain tax positions 4us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued 2us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued
State    
Operating loss carryforwards    
Operating loss carryforwards expected to be unutilized 4ltrpa_DeferredTaxAssetsOperatingLossCarryforwardsExpectedToBeUnutilized
/ us-gaap_IncomeTaxAuthorityAxis
= us-gaap_StateAndLocalJurisdictionMember
 
Foreign    
Operating loss carryforwards    
Operating loss carryforwards expected to be unutilized $ 19ltrpa_DeferredTaxAssetsOperatingLossCarryforwardsExpectedToBeUnutilized
/ us-gaap_IncomeTaxAuthorityAxis
= us-gaap_ForeignCountryMember