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Business & Basis of Presentation (Details) subscriber in Millions | 12 Months Ended
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Dec. 31, 2019 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
Equity Method Investee | Sirius XM Canada |
Related Party Transaction [Line Items] |
Equity method investment, equity interest percentage | 70.00%
Equity method investment, voting interest percentage | 33.00%
Common Stock | Management | Liberty Media |
Related Party Transaction [Line Items] |
Related party ownership percentage | 72.00%
Sirius XM |
Related Party Transaction [Line Items] |
Number of subscribers | 34.9
Pandora |
Related Party Transaction [Line Items] |
Number of subscribers | 6.2

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