Quarterly report pursuant to Section 13 or 15(d)

Business & Basis of Presentation (Details)

v3.21.1
Business & Basis of Presentation (Details)
subscriber in Millions, $ in Millions
3 Months Ended
Oct. 16, 2020
USD ($)
Jun. 16, 2020
USD ($)
Mar. 31, 2021
USD ($)
subscriber
segment
satellite_radio_system
Dec. 31, 2020
USD ($)
Feb. 10, 2020
USD ($)
Related Party Transaction [Line Items]          
Number of reportable segments | segment     2    
Number of satellite radio systems | satellite_radio_system     2    
Simplecast          
Related Party Transaction [Line Items]          
Payments to acquire businesses, gross   $ 28      
Stitcher          
Related Party Transaction [Line Items]          
Payments to acquire businesses, gross $ 266        
Consideration for acquisition 302        
Contingent consideration, liability 36        
Stitcher | Maximum          
Related Party Transaction [Line Items]          
Contingent consideration, liability $ 60        
Sirius XM Canada | Equity Method Investee          
Related Party Transaction [Line Items]          
Equity method investment, equity interest percentage     70.00%    
Equity method investment, voting interest percentage     33.00%    
Equity method investments     $ 340 $ 332  
SoundCloud Holdings, LLC          
Related Party Transaction [Line Items]          
Equity method investments         $ 75
Liberty Media | Common Stock          
Related Party Transaction [Line Items]          
Related party ownership percentage     77.00%    
Liberty Media | Management | Common Stock          
Related Party Transaction [Line Items]          
Related party ownership percentage     77.00%    
Sirius XM          
Related Party Transaction [Line Items]          
Number of subscribers | subscriber     34.5    
Pandora          
Related Party Transaction [Line Items]          
Number of subscribers | subscriber     6.5