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Benefit Plans (Movements in Other Comprehensive Earnings/Losses) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Amortization: |  |  |
Net loss (gain) | $ 29 | $ 8 | $ 127
Prior service cost (credit) | (36) | (34) | (39)
Deferred income taxes | 2 | 8 | (22)
Amounts reclassified to net earnings as components of net periodic benefit cost | (5) | (18) | 66
Other movements during the year: |  |  |
Net (loss) gain | 141 | (51) | 147
Prior service (cost) credit | 1 | 3 | (2)
Deferred income taxes | (36) | 9 | (35)
Other movements | 106 | (39) | 110
Total movements in other comprehensive earnings (losses) | 101 | (57) | 176
Pension [Member] |  |  |
Amortization: |  |  |
Net loss (gain) | 28 | 4 | 96
Prior service cost (credit) | 5 | 6 | 6
Deferred income taxes | (8) | (2) | (26)
Amounts reclassified to net earnings as components of net periodic benefit cost | 25 | 8 | 76
Other movements during the year: |  |  |
Net (loss) gain | (5) | (60) | (183)
Prior service (cost) credit | 0 | 0 | 0
Deferred income taxes | 1 | 16 | 48
Other movements | (4) | (44) | (135)
Total movements in other comprehensive earnings (losses) | 21 | (36) | (59)
Postretirement Benefit Plan [Member] |  |  |
Amortization: |  |  |
Net loss (gain) | (6) | (2) | 18
Prior service cost (credit) | (41) | (40) | (45)
Deferred income taxes | 12 | 11 | 7
Amounts reclassified to net earnings as components of net periodic benefit cost | (35) | (31) | (20)
Other movements during the year: |  |  |
Net (loss) gain | 159 | 20 | 345
Prior service (cost) credit | 1 | 3 | (2)
Deferred income taxes | (40) | (10) | (87)
Other movements | 120 | 13 | 256
Total movements in other comprehensive earnings (losses) | 85 | (18) | 236
Postemployment Retirement Benefits [Member] |  |  |
Amortization: |  |  |
Net loss (gain) | 7 | 6 | 13
Prior service cost (credit) | 0 | 0 | 0
Deferred income taxes | (2) | (1) | (3)
Amounts reclassified to net earnings as components of net periodic benefit cost | 5 | 5 | 10
Other movements during the year: |  |  |
Net (loss) gain | (13) | (11) | (15)
Prior service (cost) credit | 0 | 0 | 0
Deferred income taxes | 3 | 3 | 4
Other movements | (10) | (8) | (11)
Total movements in other comprehensive earnings (losses) | $ (5) | $ (3) | $ (1)

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