Changes in Accumulated Other Comprehensive Loss by Component (Narrative) (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2024 |
Dec. 31, 2023 |
Dec. 31, 2022 |
|
| Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] | |||
| Other income | $ 23 | $ 7 | $ (2) |
| Amount Reclassified from Accumulated Other Comprehensive Loss | Defined Benefit Pension Plan | |||
| Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] | |||
| Other income | $ 8 | $ 1 | $ 1 |