Annual report pursuant to Section 13 and 15(d)

Investments In Affiliates Accounted For Using The Equity Method - Share Of Earnings (Losses) Of Affiliates (Details)

v3.8.0.1
Investments In Affiliates Accounted For Using The Equity Method - Share Of Earnings (Losses) Of Affiliates (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Schedule of Equity Method Investments [Line Items]      
Share of earnings (losses) of affiliates, net $ 104 $ 14 $ (40)
Liberty Sirius XM Group      
Schedule of Equity Method Investments [Line Items]      
Share of earnings (losses) of affiliates, net 29 13 (1)
Liberty Sirius XM Group | Sirius XM Canada      
Schedule of Equity Method Investments [Line Items]      
Share of earnings (losses) of affiliates, net 29 13 (1)
Braves Group      
Schedule of Equity Method Investments [Line Items]      
Share of earnings (losses) of affiliates, net 78 9 9
Braves Group | Other      
Schedule of Equity Method Investments [Line Items]      
Share of earnings (losses) of affiliates, net 78 9 9
Braves Group | Braves Holdings      
Schedule of Equity Method Investments [Line Items]      
Share of earnings (losses) of affiliates, net 69    
Formula One Group      
Schedule of Equity Method Investments [Line Items]      
Share of earnings (losses) of affiliates, net (3) (8) (48)
Formula One Group | Live Nation      
Schedule of Equity Method Investments [Line Items]      
Share of earnings (losses) of affiliates, net (18) (12) (27)
Formula One Group | Other      
Schedule of Equity Method Investments [Line Items]      
Share of earnings (losses) of affiliates, net $ 15 $ 4 $ (21)