Quarterly report pursuant to Section 13 or 15(d)

Business & Basis of Presentation (Details)

v3.20.2
Business & Basis of Presentation (Details)
subscriber in Millions
3 Months Ended 9 Months Ended
Jun. 16, 2020
USD ($)
Sep. 30, 2020
USD ($)
Sep. 30, 2020
USD ($)
subscriber
segment
satellite_radio_system
Sep. 30, 2019
USD ($)
Feb. 10, 2020
USD ($)
Dec. 31, 2019
USD ($)
Related Party Transaction [Line Items]            
Number of reportable segments | segment     2      
Number of satellite radio systems | satellite_radio_system     2      
Loss on restructuring     $ 24,000,000 $ 0    
Automatic Labs Inc. | Disposal Group, Not Discontinued Operations            
Related Party Transaction [Line Items]            
Loss on restructuring   $ 0 $ 24,000,000      
Simplecast            
Related Party Transaction [Line Items]            
Consideration for acquisition $ 28,000,000          
SoundCloud Holdings, LLC            
Related Party Transaction [Line Items]            
Equity method investments         $ 75,000,000  
Equity Method Investee | Sirius XM Canada            
Related Party Transaction [Line Items]            
Equity method investment, equity interest percentage   70.00% 70.00%      
Equity method investment, voting interest percentage   33.00% 33.00%      
Equity method investments   $ 320,000,000 $ 320,000,000     $ 321,000,000
Common Stock | Management | Liberty Media            
Related Party Transaction [Line Items]            
Related party ownership percentage   74.00% 74.00%      
Sirius XM            
Related Party Transaction [Line Items]            
Number of subscribers | subscriber     34.4      
Pandora            
Related Party Transaction [Line Items]            
Number of subscribers | subscriber     6.4