Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt (Debt Securities That Are Not Reported At Fair Value) (Details)

v2.4.1.9
Long-Term Debt (Debt Securities That Are Not Reported At Fair Value) (Details) (USD $)
In Millions, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Debt Instrument [Line Items]    
Fair value of debt not reported at fair value $ 2,502us-gaap_LongTermDebtFairValue $ 2,574us-gaap_LongTermDebtFairValue
Senior Debentures    
Debt Instrument [Line Items]    
Fair value of debt not reported at fair value 884us-gaap_LongTermDebtFairValue
/ us-gaap_LongtermDebtTypeAxis
= linta_SeniorDebenturesMember
 
QVC Senior Secured Notes    
Debt Instrument [Line Items]    
Fair value of debt not reported at fair value $ 4,151us-gaap_LongTermDebtFairValue
/ us-gaap_LongtermDebtTypeAxis
= linta_QvcSeniorSecuredNotesMember