| Business & Basis of Presentation (Details) subscriber in Millions | 6 Months Ended | 
|---|---|
| Jun. 30, 2023  subscriber  segment  satellite_radio_system | |
| Related Party Transaction [Line Items] | |
| Number of reportable segments | segment | 2 | 
| Number of satellite radio systems | satellite_radio_system | 2 | 
| Pandora | |
| Related Party Transaction [Line Items] | |
| Number of subscribers | 6.2 | 
| 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% | 
| Liberty Media | Management | Common Stock | |
| Related Party Transaction [Line Items] | |
| Related party ownership percentage | 83.00% | 
| Sirius XM | |
| Related Party Transaction [Line Items] | |
| Number of subscribers | 34.0 | 
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