Accounting for Stock-Based Compensation - Schedule of Share-based Compensation Expense (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
|
| Share-Based Payment Arrangement [Abstract] | ||||
| Effect on (loss) income before income taxes | $ (3) | $ 1 | $ (7) | $ (7) |
| Effect on net income | $ (2) | $ (0) | $ (6) | $ (5) |