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v3.25.2

Employee Benefit Plans (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Pension Plans [Member] |  |  |  |
Components of net periodic benefit cost: |  |  |  |
Service cost | $ 27 | $ 28 | $ 54 | $ 56
Interest cost | 34 | 32 | 68 | 63
Expected return on plan assets | (56) | (54) | (111) | (107)
Amortization of: |  |  |  |
Net actuarial gain | (2) | (2) | (4) | (3)
Prior service cost (credit) | 1 | (2) | 3 | (5)
Settlement loss | 2 | 0 | 3 | 0
Net periodic benefit cost | 6 | 2 | 13 | 4
Other Postretirement Benefit Plans [Member] |  |  |  |
Components of net periodic benefit cost: |  |  |  |
Service cost | 1 | 1 | 2 | 2
Interest cost | 3 | 3 | 6 | 6
Expected return on plan assets | 0 | 0 | 0 | 0
Amortization of: |  |  |  |
Net actuarial gain | (2) | (1) | (4) | (2)
Prior service cost (credit) | 0 | 0 | 0 | 0
Settlement loss | 0 | 0 | 0 | 0
Net periodic benefit cost | $ 2 | $ 3 | $ 4 | $ 6

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