Goodwill and Other Intangible Assets - Intangible Assets Subject to Amortization (Details) - USD ($) $ in Millions |
12 Months Ended | |
|---|---|---|
Dec. 31, 2021 |
Dec. 31, 2020 |
|
| Finite-Lived Intangible Assets [Line Items] | ||
| Gross carrying amount | $ 5,582 | $ 5,582 |
| Accumulated amortization | (4,837) | (4,803) |
| Net carrying amount | $ 745 | 779 |
| Weighted average useful life at time of acquisition | 9 years | |
| Television Distribution Rights | ||
| Finite-Lived Intangible Assets [Line Items] | ||
| Gross carrying amount | $ 818 | 814 |
| Accumulated amortization | (673) | (751) |
| Net carrying amount | 145 | 63 |
| Customer Relationships | ||
| Finite-Lived Intangible Assets [Line Items] | ||
| Gross carrying amount | 3,321 | 3,334 |
| Accumulated amortization | (3,087) | (3,004) |
| Net carrying amount | 234 | 330 |
| Other Intangible Assets | ||
| Finite-Lived Intangible Assets [Line Items] | ||
| Gross carrying amount | 1,443 | 1,434 |
| Accumulated amortization | (1,077) | (1,048) |
| Net carrying amount | $ 366 | $ 386 |