Income Taxes - Reconciliation of Deferred Tax Asset Valuation Allowance (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Deferred Tax Asset Valuation Allowance [Roll Forward] | |||
| Beginning balance | $ 6,435 | $ 7,656 | $ 8,049 |
| Charged to expense (benefit) | (59) | (409) | (2) |
| Other | (450) | (812) | (391) |
| Ending balance | $ 5,926 | $ 6,435 | $ 7,656 |