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Business & Basis of Presentation (Details) subscriber in Millions, active_user in Millions | 9 Months Ended
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Sep. 30, 2019 active_user 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 | 71.00%
Sirius XM |
Related Party Transaction [Line Items] |
Number of subscribers | 34.6
Pandora |
Related Party Transaction [Line Items] |
Number of subscribers | 6.3
Number of ad-supported active users | active_user | 63.1

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- Definition Number Of Ad-Supported Active Users + References No definition available. + Details
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