Annual report pursuant to Section 13 and 15(d)

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

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Investments In Affiliates Accounted For Using The Equity Method - SoundCloud (Details)
$ in Millions
1 Months Ended 12 Months Ended
Feb. 29, 2020
USD ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Investments in Affiliates Accounted for Using the Equity Method      
Equity Method Investments   $ 1,018 $ 1,625
SoundCloud Holdings, LLC      
Investments in Affiliates Accounted for Using the Equity Method      
Due to related parties non current   24  
Sirius XM Holdings | SoundCloud Holdings, LLC      
Investments in Affiliates Accounted for Using the Equity Method      
Revenue Share Expense   $ 55 $ 40
Sirius XM Holdings | SoundCloud Holdings, LLC | Equity Method Investee | Series G Membership Units      
Investments in Affiliates Accounted for Using the Equity Method      
Equity Method Investments $ 75    
Series G membership unit conversion ratio (ordinary membership unit per series G membership unit) 1