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
Mar. 31, 2013
Dec. 31, 2012
Carrying value of debt measured at fair value $ 2,813 $ 2,443
Senior Notes [Member]
   
Carrying value of debt measured at fair value 242  
Senior Debentures [Member]
   
Carrying value of debt measured at fair value 881  
QVC Senior Secured Notes [Member]
   
Carrying value of debt measured at fair value $ 3,375