Stock-Based Compensation (Narrative) (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| Stock-Based Compensation [Abstract] | ||||
| Stock-based compensation expense | $ 9 | $ 8 | $ 17 | $ 15 |
| Stock-based compensation expense, net of tax | 7 | $ 6 | 12 | $ 12 |
| Total unrecognized compensation costs related to non-vested stock options, restricted share units and performance shares | $ 61 | $ 61 | ||
| Weighted-average period of recognition of stock-based compensation cost | 2 years 5 months 12 days | |||