Quarterly report pursuant to Section 13 or 15(d)

Business & Basis of Presentation (Details)

v3.21.2
Business & Basis of Presentation (Details)
subscriber in Millions, $ in Millions
3 Months Ended 9 Months Ended
Oct. 16, 2020
USD ($)
Jun. 16, 2020
USD ($)
Sep. 30, 2021
USD ($)
Sep. 30, 2020
USD ($)
Sep. 30, 2021
USD ($)
segment
satellite_radio_system
subscriber
Sep. 30, 2020
USD ($)
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      
Impairment, restructuring and acquisition costs     $ (95) $ 0 $ 13 $ 24    
Benefit in amount of contingent consideration, liability     17   17      
Disposal Group, Not Discontinued Operations | Automatic Labs Inc                
Related Party Transaction [Line Items]                
Impairment, restructuring and acquisition costs       $ 0   $ 24    
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              
Contingent consideration potential additional payments     $ 30   $ 30      
Sirius XM Canada | Equity Method Investee                
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     $ 338   $ 338   $ 332  
SoundCloud Holdings, LLC                
Related Party Transaction [Line Items]                
Equity method investments               $ 75
Liberty Media | Management | Common Stock                
Related Party Transaction [Line Items]                
Related party ownership percentage     79.00%   79.00%      
Sirius XM                
Related Party Transaction [Line Items]                
Number of subscribers | subscriber         34.3      
Pandora                
Related Party Transaction [Line Items]                
Number of subscribers | subscriber         6.5