Quarterly report pursuant to Section 13 or 15(d)

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

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Long-Term Debt (Debt Securities That Are Not Reported At Fair Value) (Details) (USD $)
In Millions, unless otherwise specified
Sep. 30, 2014
Dec. 31, 2013
Debt Instrument [Line Items]    
Fair value of debt not reported at fair value $ 2,474 $ 2,355
Senior Debentures
   
Debt Instrument [Line Items]    
Fair value of debt not reported at fair value 880  
QVC Senior Secured Notes
   
Debt Instrument [Line Items]    
Fair value of debt not reported at fair value $ 4,117