v3.25.1
Business & Basis of Presentation (Details)
$ / shares in Units, subscriber in Millions
3 Months Ended
Sep. 09, 2024
$ / shares
Mar. 31, 2025
USD ($)
segment
subscriber
satelliteRadioSystem
$ / shares
Mar. 31, 2024
USD ($)
Dec. 31, 2024
$ / shares
Jun. 16, 2024
Related Party Transaction [Line Items]          
Common stock, par value (in USD per share) | $ / shares $ 0.001 $ 0.001   $ 0.001  
Conversion ratio 0.1 0.10      
Number of reportable segments | segment   2      
Number of operating segments | segment   2      
Number of satellite radio systems | satelliteRadioSystem   2      
Merger related costs | $   $ 0 $ 6,000,000    
Acquisition related costs | $   $ 0 $ 19,000,000    
Pandora          
Related Party Transaction [Line Items]          
Number of subscribers | subscriber   5.7      
Sirius XM Holdings, Inc.          
Related Party Transaction [Line Items]          
Redemption ratio         0.1
Liberty Sirius XM          
Related Party Transaction [Line Items]          
Common stock, par value (in USD per share) | $ / shares $ 0.01        
Redemption ratio 0.8375        
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%      
Sirius XM          
Related Party Transaction [Line Items]          
Number of subscribers | subscriber   32.9