Summary of Significant Accounting Policies - Revenue recognition - Disaggregation of revenue - SIRIUS XM (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2022 |
Dec. 31, 2021 |
Dec. 31, 2020 |
|
| Revenue disaggregated by source | Ìý | Ìý | Ìý |
| Revenue | $ 12,164 | $ 11,400 | $ 9,363 |
| Other. | Ìý | Ìý | Ìý |
| Revenue disaggregated by source | Ìý | Ìý | Ìý |
| Revenue | 588 | 568 | 178 |
| Sirius XM Holdings | Ìý | Ìý | Ìý |
| Revenue disaggregated by source | Ìý | Ìý | Ìý |
| Revenue | $ 9,003 | 8,696 | 8,040 |
| Activation fees, recognition period | 1 month | Ìý | Ìý |
| Sirius XM Holdings | Minimum | Ìý | Ìý | Ìý |
| Revenue disaggregated by source | Ìý | Ìý | Ìý |
| Subscription period | 3 months | Ìý | Ìý |
| Sirius XM Holdings | Maximum | Ìý | Ìý | Ìý |
| Revenue disaggregated by source | Ìý | Ìý | Ìý |
| Subscription period | 12 months | Ìý | Ìý |
| Sirius XM Holdings | Subscriber | Ìý | <||