Quarterly report pursuant to Section 13 or 15(d)

Investments In Available-For-Sale Securities And Other Cost Investments (Investments In Available-For-Sale Securities And Other Cost Investments) (Details)

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Investments In Available-For-Sale Securities And Other Cost Investments (Investments In Available-For-Sale Securities And Other Cost Investments) (Details) - USD ($)
$ in Millions
Jun. 30, 2015
Dec. 31, 2014
Schedule of Investments in available-for-sale securities and other cost investments    
Investments in available-for-sale securities and other cost investments $ 1,405 $ 1,224
QVC Group Common Stock    
Schedule of Investments in available-for-sale securities and other cost investments    
Cost Method Investments 4 4
Investments in available-for-sale securities and other cost investments $ 4 4
QVC Group Common Stock | QVC 3.125% Senior Secured Notes Due 2019    
Schedule of Investments in available-for-sale securities and other cost investments    
Interest rate (as a percent) 3.125%  
Liberty Ventures common stock    
Schedule of Investments in available-for-sale securities and other cost investments    
Investments in available-for-sale securities and other cost investments $ 1,401 1,220
Other Investments | Liberty Ventures common stock    
Schedule of Investments in available-for-sale securities and other cost investments    
Investments in available-for-sale securities and other cost investments 62 30
Time Warner Inc | Fair Value Option, Other Eligible Items | Liberty Ventures common stock    
Schedule of Investments in available-for-sale securities and other cost investments    
Investments in available-for-sale securities and other cost investments 384 375
Time Warner Cable Inc | Fair Value Option, Other Eligible Items | Liberty Ventures common stock    
Schedule of Investments in available-for-sale securities and other cost investments    
Investments in available-for-sale securities and other cost investments $ 955 $ 815