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Share-based Compensation and Employee Benefits - Schedule of Components of Net Benefit Cost and Other Amounts Recognized in Other Comprehensive Income (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Pension Benefits |  |  |
Components of net benefit cost (credit): |  |  |
Service cost | $ 55 | $ 55 | $ 53
Interest cost | 107 | 57 | 45
Expected return on assets | (117) | (142) | (133)
Amortization of prior service cost (credit) | 1 | 1 | 0
Amortization of net actuarial loss (gain) | 35 | 29 | 52
Settlement loss | 46 | 0 | 0
Net benefit cost (credit) | 127 | 0 | 17
Other changes in plan assets and benefit obligations recognized in other comprehensive (income) loss: |  |  |
Net loss (gain) arising during period | 10 | (11) | (127)
Amortization or settlement recognition of net actuarial (loss) gain | (81) | (29) | (52)
Amortization of prior service (cost) credit | (1) | (1) | 0
Total recognized in total other comprehensive (income) loss(a) | (72) | (41) | (179)
Total recognized in net benefit cost (credit) and other comprehensive (income) loss | 55 | (41) | (162)
Pension Benefits | Other Plans |  |  |
Other changes in plan assets and benefit obligations recognized in other comprehensive (income) loss: |  |  |
Total recognized in total other comprehensive (income) loss(a) |  | 4 | 3
OPEB |  |  |
Components of net benefit cost (credit): |  |  |
Service cost | 1 | 1 | 1
Interest cost | 10 | 5 | 4
Expected return on assets | (13) | (17) | (16)
Amortization of prior service cost (credit) | (3) | (3) | (5)
Amortization of net actuarial loss (gain) | (16) | (18) | (17)
Settlement loss | 0 | 0 | 0
Net benefit cost (credit) | (21) | (32) | (33)
Other changes in plan assets and benefit obligations recognized in other comprehensive (income) loss: |  |  |
Net loss (gain) arising during period | (30) | 24 | (40)
Amortization or settlement recognition of net actuarial (loss) gain | 16 | 17 | 17
Amortization of prior service (cost) credit | 1 | 2 | 3
Total recognized in total other comprehensive (income) loss(a) | (13) | 43 | (20)
Total recognized in net benefit cost (credit) and other comprehensive (income) loss | $ (34) | $ 11 | $ (53)

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