Other Financial Data - Summary of Components of Receivables, Net (Details) - USD ($) $ in Millions |
Dec. 31, 2021 |
Jul. 01, 2021 |
Dec. 31, 2020 |
|---|---|---|---|
| Other Financial Data [Abstract] | |||
| Billed and unbilled receivables | $ 520 | $ 547 | |
| Allowance for expected credit losses | (5) | $ 0 | (15) |
| Balance at end of period | $ 515 | $ 532 |