Goodwill - Rollforward (Details) - USD ($) $ in Millions |
12 Months Ended | |
|---|---|---|
Dec. 31, 2019 |
Dec. 31, 2018 |
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| Goodwill [Roll Forward] | ||
| Goodwill, beginning of period | $ 2,290 | $ 2,287 |
| Acquisition | 1,553 | 3 |
| Goodwill, end of period | 3,843 | 2,290 |
| Sirius XM | ||
| Goodwill [Roll Forward] | ||
| Goodwill, beginning of period | 2,290 | 2,287 |
| Acquisition | 0 | 3 |
| Goodwill, end of period | 2,290 | 2,290 |
| Pandora | ||
| Goodwill [Roll Forward] | ||
| Goodwill, beginning of period | 0 | 0 |
| Acquisition | 1,553 | 0 |
| Goodwill, end of period | $ 1,553 | $ 0 |
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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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