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 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Schedule of Equity Method Investments [Line Items]        
Share of earnings (losses) of affiliates, net $ 155 $ 37 $ 167 $ 43
Liberty Sirius XM Group        
Schedule of Equity Method Investments [Line Items]        
Share of earnings (losses) of affiliates, net 34 2 32 11
Liberty Sirius XM Group | Sirius XM Canada        
Schedule of Equity Method Investments [Line Items]        
Share of earnings (losses) of affiliates, net 34 2 32 11
Braves Group        
Schedule of Equity Method Investments [Line Items]        
Share of earnings (losses) of affiliates, net 68 2 72 6
Braves Group | Other        
Schedule of Equity Method Investments [Line Items]        
Share of earnings (losses) of affiliates, net 68 2 72 6
Braves Group | Braves Holdings        
Schedule of Equity Method Investments [Line Items]        
Share of earnings (losses) of affiliates, net 67      
Formula One Group        
Schedule of Equity Method Investments [Line Items]        
Share of earnings (losses) of affiliates, net 53 33 63 26
Formula One Group | Live Nation        
Schedule of Equity Method Investments [Line Items]        
Share of earnings (losses) of affiliates, net 43 $ 33 51 25
Formula One Group | Other        
Schedule of Equity Method Investments [Line Items]        
Share of earnings (losses) of affiliates, net $ 10   $ 12 $ 1