Income Taxes - Valuation Allowance (Details) - USD ($) $ in Millions |
12 Months Ended | ||
---|---|---|---|
Dec. 31, 2023 |
Dec. 31, 2022 |
Dec. 31, 2021 |
|
Movement in valuation allowances and reserves | |||
Valuation allowance at beginning of period | $ 542 | $ 331 | $ 87 |
Change in deferred tax asset positions | 184 | 211 | 244 |
Valuation allowance at end of period | $ 726 | $ 542 | $ 331 |