Annual report pursuant to Section 13 and 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
12 Months Ended
Dec. 31, 2015
Dec. 31, 2016
Schedule of Investments [Line Items]    
Investments in available-for-sale securities and other cost investments $ 533 $ 1,309
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 Formula One Group    
Schedule of Investments [Line Items]    
Investments in available-for-sale securities and other cost investments 525 1,301
Liberty Formula One Group | Fair Value Option Securities    
Schedule of Investments [Line Items]    
Investments in available-for-sale securities and other cost investments 450 489
Liberty Formula One Group | AFS and cost method investments    
Schedule of Investments [Line Items]    
Investments in available-for-sale securities and other cost investments 75 812
Liberty Formula One Group | Other equity securities | Fair Value Option Securities    
Schedule of Investments [Line Items]    
Investments in available-for-sale securities and other cost investments 74 13
Liberty Formula One 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 Formula One Group | Other Debt Obligations | AFS and cost method investments    
Schedule of Investments [Line Items]    
Investments in available-for-sale securities and other cost investments 24  
Liberty Formula One 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 51 53
Liberty Formula One Group | Time Warner Inc | Fair Value Option Securities    
Schedule of Investments [Line Items]    
Investments in available-for-sale securities and other cost investments 275 411
Liberty Formula One Group | Viacom, Inc. | Fair Value Option Securities    
Schedule of Investments [Line Items]    
Investments in available-for-sale securities and other cost investments $ 76 65
Liberty Formula One Group | Formula 1 | AFS and cost method investments    
Schedule of Investments [Line Items]    
Investments in available-for-sale securities and other cost investments   $ 759