Quarterly report pursuant to Section 13 or 15(d)

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

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Investments In Affiliates Accounted For Using The Equity Method - Share Of Earnings (Losses) Of Affiliates (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Schedule of Equity Method Investments [Line Items]        
Share of earnings (losses) of affiliates, net $ 22 $ 16 $ 14 $ 12
Liberty Sirius XM Group        
Schedule of Equity Method Investments [Line Items]        
Share of earnings (losses) of affiliates, net (1) (5)   (2)
Liberty Sirius XM Group | Sirius XM Canada        
Schedule of Equity Method Investments [Line Items]        
Share of earnings (losses) of affiliates, net (1) (5)   (2)
Braves Group        
Schedule of Equity Method Investments [Line Items]        
Share of earnings (losses) of affiliates, net 3 1 6 4
Braves Group | Other        
Schedule of Equity Method Investments [Line Items]        
Share of earnings (losses) of affiliates, net 3 1 6 4
Formula One Group        
Schedule of Equity Method Investments [Line Items]        
Share of earnings (losses) of affiliates, net 20 20 8 10
Formula One Group | Live Nation        
Schedule of Equity Method Investments [Line Items]        
Share of earnings (losses) of affiliates, net 19 23 3 8
Formula One Group | Other        
Schedule of Equity Method Investments [Line Items]        
Share of earnings (losses) of affiliates, net $ 1 $ (3) $ 5 $ 2