Income Taxes - Unrecognized Tax Benefits (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2023 |
Dec. 31, 2022 |
Dec. 31, 2021 |
|
| Income Tax Uncertainties [Abstract] | |||
| Balance at beginning of year | $ 97 | $ 88 | $ 83 |
| Additions based on tax positions related to the current year | 5 | 8 | 9 |
| Additions for tax positions of prior years | 1 | 12 | 1 |
| Reductions for tax positions of prior years | (3) | (2) | (1) |
| Lapse of statute and settlements | (33) | (9) | (4) |
| Balance at end of year | 67 | 97 | 88 |
| Unrecognized Tax Benefits that Would Impact Effective Tax Rate | 53 | ||
| Reasonably possible decrease in gross unrecognized tax benefits | 1 | ||
| Accrued interest and penalties related to uncertain tax positions | $ 6 | $ 33 | $ 28 |