Income Taxes - Schedule of Unrecognized Tax Benefits (Detail) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Schedule Of Unrecognized Tax Benefits [Line Items] | |||
| Balance at the beginning of the year | $ 449 | $ 651 | $ 638 |
| Increase (decrease) related to prior year tax positions, net | 125 | 109 | (1) |
| Increase related to current year tax positions | 8 | 53 | 15 |
| Decrease related to settlements with tax authorities and lapse of applicable statutes of limitations | (8) | (395) | (15) |
| Other | 23 | 29 | 14 |
| Balance at the end of the year | $ 596 | $ 449 | $ 651 |