Annual report pursuant to Section 13 and 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
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Realized and unrealized gains (losses) on financial instruments, net (note 7) $ (57)us-gaap_UnrealizedGainLossOnSecurities $ (22)us-gaap_UnrealizedGainLossOnSecurities $ (351)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 (note 7) 173us-gaap_UnrealizedGainLossOnSecurities
/ us-gaap_FinancialInstrumentAxis
= linta_FairValueOptionSecuritiesMember
514us-gaap_UnrealizedGainLossOnSecurities
/ us-gaap_FinancialInstrumentAxis
= linta_FairValueOptionSecuritiesMember
470us-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 (note 7) (230)us-gaap_UnrealizedGainLossOnSecurities
/ us-gaap_FinancialInstrumentAxis
= linta_ExchangeableSeniorDebenturesMember
(553)us-gaap_UnrealizedGainLossOnSecurities
/ us-gaap_FinancialInstrumentAxis
= linta_ExchangeableSeniorDebenturesMember
(602)us-gaap_UnrealizedGainLossOnSecurities
/ us-gaap_FinancialInstrumentAxis
= linta_ExchangeableSeniorDebenturesMember
Other Financial Instruments      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Realized and unrealized gains (losses) on financial instruments, net (note 7)   $ 17us-gaap_UnrealizedGainLossOnSecurities
/ us-gaap_FinancialInstrumentAxis
= linta_OtherFinancialInstrumentsMember
$ (219)us-gaap_UnrealizedGainLossOnSecurities
/ us-gaap_FinancialInstrumentAxis
= linta_OtherFinancialInstrumentsMember