v3.26.3
Other Comprehensive Earnings/Losses (Reclassifications) (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Net periodic benefit income, excluding service cost $ (5) $ (16) $ (9) $ (45)
(Income) losses from investments in equity securities (242) (107) (487) (398)
Pre-tax amounts reclassified from accumulated other comprehensive losses to net earnings (2,514) (2,375) (6,995) (5,830)
Reclassification out of Accumulated Other Comprehensive Income [Member]        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Pre-tax amounts reclassified from accumulated other comprehensive losses to net earnings 3 (2) 50 (26)
Benefit Plans [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Net periodic benefit income, excluding service cost 12 1 41 5
Net loss [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Net periodic benefit income, excluding service cost 21 10 67 32
Prior service costs/credit [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Net periodic benefit income, excluding service cost (9) (9) (26) (27)
ABI [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
(Income) losses from investments in equity securities $ (9) $ (3) $ 9 $ (31)