Quarterly report pursuant to Section 13 or 15(d)

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

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Debt (Debt Securities That Are Not Reported At Fair Value) (Details) - USD ($)
$ in Millions
Sep. 30, 2016
Dec. 31, 2015
Debt Instrument [Line Items]    
Long-term Debt, Fair Value $ 1,140 $ 1,287
Senior Debentures    
Debt Instrument [Line Items]    
Fair Value of Debt Securities That Are Not Reported at Fair Value 891  
QVC Senior Secured Notes    
Debt Instrument [Line Items]    
Fair Value of Debt Securities That Are Not Reported at Fair Value $ 3,589