Quarterly report pursuant to Section 13 or 15(d)

Assets And Liabilities Measured At Fair Value Realized Unrealized Gain Loss (Details)

v2.4.1.9
Assets And Liabilities Measured At Fair Value Realized Unrealized Gain Loss (Details) (USD $)
In Millions, unless otherwise specified
 3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Realized and unrealized gains (losses) on financial instruments, net $ (4)us-gaap_UnrealizedGainLossOnSecurities $ (25)us-gaap_UnrealizedGainLossOnSecurities
Fair Value Option Securities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Realized and unrealized gains (losses) on financial instruments, net (17)us-gaap_UnrealizedGainLossOnSecurities
/ us-gaap_FinancialInstrumentAxis
= linta_FairValueOptionSecuritiesMember 		(10)us-gaap_UnrealizedGainLossOnSecurities
/ us-gaap_FinancialInstrumentAxis
= linta_FairValueOptionSecuritiesMember
Exchangeable Senior Debentures    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Realized and unrealized gains (losses) on financial instruments, net $ 13us-gaap_UnrealizedGainLossOnSecurities
/ us-gaap_FinancialInstrumentAxis
= linta_ExchangeableSeniorDebenturesMember 		$ (15)us-gaap_UnrealizedGainLossOnSecurities
/ us-gaap_FinancialInstrumentAxis
= linta_ExchangeableSeniorDebenturesMember