Quarterly report pursuant to Section 13 or 15(d)

Investments In Affiliates Accounted For Using The Equity Method (Details)

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Investments In Affiliates Accounted For Using The Equity Method (Details) - USD ($)
$ in Millions
Mar. 31, 2021
Dec. 31, 2020
Investments in Affiliates Accounted for Using the Equity Method    
Investments in affiliates $ 943 $ 1,018
Liberty SiriusXM Group    
Investments in Affiliates Accounted for Using the Equity Method    
Investments in affiliates $ 791 886
Liberty SiriusXM Group | Live Nation    
Investments in Affiliates Accounted for Using the Equity Method    
Percentage ownership 32.00%  
Fair value $ 5,895  
Investments in affiliates $ 60 163
Liberty SiriusXM Group | Sirius XM Canada    
Investments in Affiliates Accounted for Using the Equity Method    
Percentage ownership 70.00%  
Investments in affiliates $ 653 643
Liberty SiriusXM Group | Other    
Investments in Affiliates Accounted for Using the Equity Method    
Investments in affiliates 78 80
Braves Group    
Investments in Affiliates Accounted for Using the Equity Method    
Investments in affiliates 97 94
Braves Group | Other    
Investments in Affiliates Accounted for Using the Equity Method    
Investments in affiliates 97 94
Formula One Group    
Investments in Affiliates Accounted for Using the Equity Method    
Investments in affiliates 55 38
Formula One Group | Other    
Investments in Affiliates Accounted for Using the Equity Method    
Investments in affiliates $ 55 $ 38