Business & Basis of Presentation (Details) $ in Thousands |
12 Months Ended | |||
|---|---|---|---|---|
|
Sep. 22, 2017
USD ($)
|
Dec. 31, 2017
USD ($)
segment
satellite_radio_system
|
Dec. 31, 2016
USD ($)
|
Dec. 31, 2015
USD ($)
|
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| Organization, Consolidation and Presentation of Financial Statements [Abstract] | ||||
| Number of satellite radio systems | satellite_radio_system | 2 | |||
| Related Party Transaction [Line Items] | ||||
| Investment in convertible preferred stock | $ 612,465 | $ 0 | $ 0 | |
| Segment Reporting, Disclosure of Entity's Reportable Segments [Abstract] | ||||
| Number of reportable segments | segment | 1 | |||
| Pandora | Investee | ||||
| Related Party Transaction [Line Items] | ||||
| Investment in convertible preferred stock | $ 480,000 | $ 480,000 | ||
| Liberty Media | Common Stock | Management | ||||
| Related Party Transactions [Abstract] | ||||
| Related party ownership percentage | 70.00% | |||
| Minimum | ||||
| Related Party Transaction [Line Items] | ||||
| Length of prepaid subscriptions, term | 3 months | |||
| Maximum | ||||
| Related Party Transaction [Line Items] | ||||
| Length of prepaid subscriptions, term | 12 months | |||
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- Definition Length of prepaid subscriptions term. No definition available.
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- Definition Number of satellite radio systems. No definition available.
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- Definition Related party transaction related party ownership percentage. No definition available.
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- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. No definition available.
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- References No definition available.
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- Definition The cash outflow associated with the purchase of all investments (debt, security, other) during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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