Consolidated Statements of Comprehensive Income (Unaudited) (Parenthetical) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Statement of Comprehensive Income [Abstract] | ||||
| Defined benefit pension plan actuarial loss, tax | $ 0 | $ 0 | $ 0 | $ 0 |
| Unrealized gain (loss) on cash flow hedges, tax | (1) | 1 | 0 | (2) |
| Unrealized gain (loss) on available-for-sale fixed-income securities, tax | $ 0 | $ 0 | $ 0 | $ (1) |