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Benefit Plans (Movements in Other Comprehensive Earnings/Losses) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Amortization: |  |  |
Net loss | $ 127 | $ 163 | $ 163
Prior service cost/credit | (39) | (41) | (25)
Other expense (income): |  |  |
Net loss | 0 | 0 | 10
Prior service cost/credit | 0 | 0 | 0
Deferred income taxes | (22) | (30) | (37)
Amounts reclassified to net earnings as components of net periodic benefit cost | 66 | 92 | 111
Other movements during the year: |  |  |
Net loss | 147 | 624 | (448)
Prior service cost/credit | (2) | 337 | (6)
Deferred income taxes | (35) | (245) | 115
Other movements | 110 | 716 | (339)
Total movements in other comprehensive earnings/losses | 176 | 808 | (228)
Pension [Member] |  |  |
Amortization: |  |  |
Net loss | 96 | 131 | 134
Prior service cost/credit | 6 | 5 | 5
Other expense (income): |  |  |
Net loss | 0 | 0 | 10
Prior service cost/credit | 0 | 0 | 0
Deferred income taxes | (26) | (35) | (37)
Amounts reclassified to net earnings as components of net periodic benefit cost | 76 | 101 | 112
Other movements during the year: |  |  |
Net loss | (183) | 465 | (268)
Prior service cost/credit | 0 | (8) | (5)
Deferred income taxes | 48 | (118) | 69
Other movements | (135) | 339 | (204)
Total movements in other comprehensive earnings/losses | (59) | 440 | (92)
Postretirement Benefit Plan [Member] |  |  |
Amortization: |  |  |
Net loss | 18 | 22 | 10
Prior service cost/credit | (45) | (46) | (30)
Other expense (income): |  |  |
Net loss | 0 | 0 | 0
Prior service cost/credit | 0 | 0 | 0
Deferred income taxes | 7 | 7 | 5
Amounts reclassified to net earnings as components of net periodic benefit cost | (20) | (17) | (15)
Other movements during the year: |  |  |
Net loss | 345 | 157 | (162)
Prior service cost/credit | (2) | 345 | (1)
Deferred income taxes | (87) | (127) | 41
Other movements | 256 | 375 | (122)
Total movements in other comprehensive earnings/losses | 236 | 358 | (137)
Postemployment Retirement Benefits [Member] |  |  |
Amortization: |  |  |
Net loss | 13 | 10 | 19
Prior service cost/credit | 0 | 0 | 0
Other expense (income): |  |  |
Net loss | 0 | 0 | 0
Prior service cost/credit | 0 | 0 | 0
Deferred income taxes | (3) | (2) | (5)
Amounts reclassified to net earnings as components of net periodic benefit cost | 10 | 8 | 14
Other movements during the year: |  |  |
Net loss | (15) | 2 | (18)
Prior service cost/credit | 0 | 0 | 0
Deferred income taxes | 4 | 0 | 5
Other movements | (11) | 2 | (13)
Total movements in other comprehensive earnings/losses | $ (1) | $ 10 | $ 1

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