Annual report pursuant to Section 13 and 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
12 Months Ended
Dec. 31, 2016
May 12, 2016
May 11, 2016
Dec. 31, 2015
Schedule of Investments in available-for-sale securities and other cost investments        
Investments in available-for-sale securities and other cost investments $ 1,922     $ 1,353
Gain (Loss) on Sale of Previously Unissued Stock by Subsidiary or Equity Investee, Nonoperating Income 65      
QVC Group Common Stock        
Schedule of Investments in available-for-sale securities and other cost investments        
Investments in available-for-sale securities and other cost investments 4     4
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 1,918     1,349
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 72     71
Charter Communications, Inc.        
Schedule of Investments in available-for-sale securities and other cost investments        
Investments in available-for-sale securities and other cost investments 1,543      
Interval Leisure Group        
Schedule of Investments in available-for-sale securities and other cost investments        
Investments in available-for-sale securities and other cost investments 302      
Interval Leisure Group | Liberty Ventures common stock        
Schedule of Investments in available-for-sale securities and other cost investments        
Ownership Interest In Investee   12.80% 28.70%  
Time Warner Inc        
Schedule of Investments in available-for-sale securities and other cost investments        
Proceeds from Sale and Maturity of Available-for-sale Securities $ 343      
Available for Sale Securities Number of Shares Sold 4      
Time Warner Inc | 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     284
Time Warner Cable Inc | 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       994
Fair Value Option, Other Eligible Items | QVC Group Common Stock        
Schedule of Investments in available-for-sale securities and other cost investments        
Investments in available-for-sale securities and other cost investments $ 4     $ 4