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v3.20.4

Goodwill (Details) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2020 USD ($) reporting_unit | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Oct. 16, 2020 USD ($) | Jun. 16, 2020 USD ($)
Business Acquisition [Line Items] |  |  |  |  |
Number of reporting units | reporting_unit | 2 |  |  |  |
Goodwill | $ 3,122,000,000 | $ 3,843,000,000 | $ 2,290,000,000 |  |
Impairment charges | 956,000,000 | 0 | 0 |  |
Accumulated impairment of goodwill since the merger | 5,722,000,000 |  |  |  |
Acquisition | 235,000,000 | 1,553,000,000 |  |  |
Simplecast |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Goodwill |  |  |  |  | $ 17,000,000
Acquisition | 17,000,000 |  |  |  |
Stitcher |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Goodwill |  |  |  | $ 218,000,000 |
Acquisition | 218,000,000 |  |  |  |
Sirius XM |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Goodwill | 2,290,000,000 | 2,290,000,000 | 2,290,000,000 |  |
Impairment charges | 0 |  |  |  |
Accumulated impairment of goodwill since the merger | 4,766,000,000 |  |  |  |
Acquisition | 0 | 0 |  |  |
Pandora |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Goodwill | 832,000,000 | 1,553,000,000 | $ 0 |  |
Impairment charges | 956,000,000 |  |  |  |
Acquisition | $ 235,000,000 | $ 1,553,000,000 |  |  |

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