Quarterly report pursuant to Section 13 or 15(d)

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 (Details) - USD ($)
shares in Millions, $ in Millions
6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Dec. 31, 2015
Schedule of Investments [Line Items]      
Investments in available-for-sale securities and other cost investments $ 492   $ 533
Proceeds from Sale of Available-for-sale Securities 58 $ 149  
Accumulated Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax 0   0
Viacom, Inc.      
Schedule of Investments [Line Items]      
Available for sale securities number of shares sold   1.8  
Proceeds from Sale of Available-for-sale Securities   $ 122  
Liberty Braves Group      
Schedule of Investments [Line Items]      
Investments in available-for-sale securities and other cost investments 8   8
Liberty Braves Group | AFS and cost method investments      
Schedule of Investments [Line Items]      
Investments in available-for-sale securities and other cost investments 8   8
Liberty Media Group      
Schedule of Investments [Line Items]      
Investments in available-for-sale securities and other cost investments 484   525
Proceeds from Sale of Available-for-sale Securities 58 $ 149  
Liberty Media Group | Fair Value Option Securities      
Schedule of Investments [Line Items]      
Investments in available-for-sale securities and other cost investments 406   450
Liberty Media Group | AFS and cost method investments      
Schedule of Investments [Line Items]      
Investments in available-for-sale securities and other cost investments 78   75
Liberty Media Group | Time Warner Inc | Fair Value Option Securities      
Schedule of Investments [Line Items]      
Investments in available-for-sale securities and other cost investments 313   275
Liberty Media Group | Viacom, Inc. | Fair Value Option Securities      
Schedule of Investments [Line Items]      
Investments in available-for-sale securities and other cost investments 77   76
Liberty Media Group | Other equity securities | Fair Value Option Securities      
Schedule of Investments [Line Items]      
Investments in available-for-sale securities and other cost investments 16   74
Liberty Media Group | Other Debt Obligations | Fair Value Option Securities      
Schedule of Investments [Line Items]      
Investments in available-for-sale securities and other cost investments     25
Liberty Media Group | Live Nation debt securities | AFS and cost method investments      
Schedule of Investments [Line Items]      
Investments in available-for-sale securities and other cost investments 24   24
Liberty Media Group | Other AFS Equity Securities | AFS and cost method investments      
Schedule of Investments [Line Items]      
Investments in available-for-sale securities and other cost investments $ 54   $ 51