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
Sep. 30, 2015
Dec. 31, 2014
Debt Instrument [Line Items]    
Fair value of debt not reported at fair value $ 2,483 $ 2,574
Senior Debentures    
Debt Instrument [Line Items]    
Fair value of debt not reported at fair value 803  
QVC Senior Secured Notes    
Debt Instrument [Line Items]    
Fair value of debt not reported at fair value $ 3,477