Intangible Assets - Schedule of Identifiable Intangible Assets (Details) - USD ($) $ in Millions |
Dec. 31, 2021 |
Dec. 31, 2020 |
|---|---|---|
| Definite-lived intangibles | ||
| Accumulated Amortization | $ 612 | $ 536 |
| Customer relationships | ||
| Definite-lived intangibles | ||
| Gross Carrying Amount | 1,192 | 1,211 |
| Accumulated Amortization | $ 612 | $ 536 |