Benefit Plans - Sirius XM Holdings Inc. Deferred Compensation Plan (Details) - USD ($) $ in Millions |
3 Months Ended | ||
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Mar. 31, 2021 |
Mar. 31, 2020 |
Dec. 31, 2020 |
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| Retirement Benefits [Abstract] | |||
| Deferred compensation contributions | $ 3 | $ 6 | |
| Fair value of investment assets related to deferred compensation plan | 50 | $ 46 | |
| Gains (losses) on investments | $ 1 | $ (5) | |
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- Definition Deferred Compensation Arrangement with Individual, Gain (Loss) on Investment No definition available.
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- References No definition available.
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- Definition Amount of contributions made by employer into fund established for purposes of making future disbursement to individual in accordance with deferred compensation arrangement. No definition available.
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- Definition Carrying amount as of the balance sheet date of assets held under deferred compensation agreements. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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