v3.26.3
Other Comprehensive Earnings/Losses (Changes in Each Component of Accumulated Other Comprehensive Losses) (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Accumulated Other Comprehensive Income [Roll Forward]        
Beginning balance $ (2,618) $ (3,206) $ (3,452) $ (2,188)
Other comprehensive earnings (losses), net of deferred income taxes 168 122 414 (309)
Ending balance (2,173) (2,596) (2,173) (2,596)
Accumulated Other Comprehensive Losses        
Accumulated Other Comprehensive Income [Roll Forward]        
Beginning balance (2,381) (2,831) (2,627) (2,400)
Other comprehensive earnings (losses) before reclassifications 215 150 483 (380)
Deferred income taxes (48) (27) (106) 91
Other comprehensive earnings (losses) before reclassifications, net of deferred income taxes 167 123 377 (289)
Amounts reclassified to net earnings 3 (2) 50 (26)
Deferred income taxes (2) 1 (13) 6
Amounts reclassified to net earnings, net of deferred income taxes 1 (1) 37 (20)
Other comprehensive earnings (losses), net of deferred income taxes 168 122 414 (309)
Ending balance (2,213) (2,709) (2,213) (2,709)
Benefit Plans [Member]        
Accumulated Other Comprehensive Income [Roll Forward]        
Beginning balance (1,393) (1,389) (1,415) (1,392)
Other comprehensive earnings (losses) before reclassifications 0 0 0 0
Deferred income taxes 0 0 0 0
Other comprehensive earnings (losses) before reclassifications, net of deferred income taxes 0 0 0 0
Amounts reclassified to net earnings 12 1 41 5
Deferred income taxes (4) 0 (11) (1)
Amounts reclassified to net earnings, net of deferred income taxes 8 1 30 4
Other comprehensive earnings (losses), net of deferred income taxes 8 1 30 4
Ending balance (1,385) (1,388) (1,385) (1,388)
ABI [Member]        
Accumulated Other Comprehensive Income [Roll Forward]        
Beginning balance (987) (1,432) (1,217) (1,018)
Other comprehensive earnings (losses) before reclassifications 226 126 501 (384)
Deferred income taxes (48) (27) (107) 91
Other comprehensive earnings (losses) before reclassifications, net of deferred income taxes 178 99 394 (293)
Amounts reclassified to net earnings (9) (3) 9 (31)
Deferred income taxes 2 1 (2) 7
Amounts reclassified to net earnings, net of deferred income taxes (7) (2) 7 (24)
Other comprehensive earnings (losses), net of deferred income taxes 171 97 401 (317)
Ending balance (816) (1,335) (816) (1,335)
Currency Translation Adjustments and Other [Member]        
Accumulated Other Comprehensive Income [Roll Forward]        
Beginning balance (1) (10) 5 10
Other comprehensive earnings (losses) before reclassifications (11) 24 (18) 4
Deferred income taxes 0 0 1 0
Other comprehensive earnings (losses) before reclassifications, net of deferred income taxes (11) 24 (17) 4
Amounts reclassified to net earnings 0 0 0 0
Deferred income taxes 0 0 0 0
Amounts reclassified to net earnings, net of deferred income taxes 0 0 0 0
Other comprehensive earnings (losses), net of deferred income taxes (11) 24 (17) 4
Ending balance $ (12) $ 14 $ (12) $ 14