Accounting for Stock-Based Compensation - Schedule of Share-based Compensation Expense (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Share-Based Payment Arrangement [Abstract] | ||||
| Effect on income before income taxes | $ (2) | $ (3) | $ (5) | $ (7) |
| Effect on net income | $ (1) | $ (2) | $ (4) | $ (6) |