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v3.25.3

Benefit Plans | 9 Months Ended
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Sep. 30, 2025
Retirement Benefits [Abstract] |
Benefit Plans | Benefit Plans Several non-contributory defined benefit plans and postretirement benefit plans cover eligible employees and retirees. The following tables present the components of net periodic (benefit) cost for the defined benefit plans:
| Pension Benefits |  |
| Three Months Ended |  |  |  | Nine Months Ended |  |
| September 30, |  |  |  | September 30, |  |
| 2025 |  | 2024 |  |  |  | 2025 |  | 2024 |  |
(In millions) |  |  |  |  |  |  |  |  |  |  |
Service cost |  |  | $ | 1 |  |  |  |  | $ | 1 |  |  | $ | 2 |  |  |
Interest cost | $ | 12 |  |  | 23 |  |  |  |  | 34 |  |  | 72 |  |  |
Expected return on plan assets | (16) |  |  | (29) |  |  |  |  | (46) |  |  | (88) |  |  |
Amortization of unrecognized net loss | 2 |  |  | 7 |  |  |  |  | 6 |  |  | 22 |  |  |
Settlements |  |  | 4 |  |  |  |  | 1 |  |  | 4 |  |  |
Net periodic (benefit) cost | $ | (2) |  |  | $ | 6 |  |  |  |  | $ | (4) |  |  | $ | 12 |  |  |
| Other Postretirement Benefits
| Three Months Ended |  |  |  | Nine Months Ended
| September 30, |  |  |  | September 30,
| 2025 |  | 2024 |  |  |  | 2025 |  | 2024
(In millions) |  |  |  |  |  |  |  |  |
Interest cost |  |  |  |  |  |  | $ | 1 |  |  | $ | 1 |
Expected return on plan assets | $ | (1) |  |  | $ | (1) |  |  |  |  | (2) |  |  | (2) |
Amortization of unrecognized net loss |  |  | 1 |  |  |  |  |  |  | 1 |
Net periodic benefit | $ | (1) |  |  | $ | — |  |  |  |  | $ | (1) |  |  | $ | — |

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