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v3.23.2

Employee Benefit Plans (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Pension Benefits |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Service cost | $ 31 | $ 51 | $ 62 | $ 102
Interest cost | 55 | 47 | 110 | 94
Expected return on plan assets | (63) | (76) | (126) | (154)
Amortization of unrecognized (gain) loss | 2 | 31 | 4 | 61
Amortization of prior service credit | 0 | 0 | 0 | 0
Other | 1 | 0 | 1 | 1
Total | 26 | 53 | 51 | 104
Other Postretirement Benefits |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Service cost | 1 | 2 | 2 | 4
Interest cost | 11 | 8 | 21 | 15
Expected return on plan assets | (1) | (1) | (1) | (1)
Amortization of unrecognized (gain) loss | (10) | (4) | (19) | (7)
Amortization of prior service credit | (28) | (28) | (56) | (56)
Other | 0 | 0 | 0 | 0
Total | $ (27) | $ (23) | $ (53) | $ (45)

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