v3.26.1
Changes in Accumulated Other Comprehensive Losses (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Accumulated Other Comprehensive Income (Loss) [Roll Forward]        
Beginning balance $ 189,371 $ 150,080 $ 192,176 $ 153,157
Components of Other Comprehensive Income (Loss):        
Other Comprehensive Gain (Loss), Net of Tax 480 142 351 193
Ending balance 195,558 147,258 195,558 147,258
Related income taxes 4,470 1,632 6,123 3,703
Total        
Accumulated Other Comprehensive Income (Loss) [Roll Forward]        
Beginning balance (2,593) (2,709) (2,464) (2,760)
Components of Other Comprehensive Income (Loss):        
Before Reclassifications     69 101
Reclassifications     282 92
Other Comprehensive Gain (Loss), Net of Tax 480 142 351 193
Ending balance (2,113) (2,567) (2,113) (2,567)
Currency Translation Adjustment        
Accumulated Other Comprehensive Income (Loss) [Roll Forward]        
Beginning balance     (199) (259)
Components of Other Comprehensive Income (Loss):        
Before Reclassifications     (92) 70
Reclassifications     0 0
Other Comprehensive Gain (Loss), Net of Tax     (92) 70
Ending balance (291) (189) (291) (189)
Unrealized Holding Gains (Losses) on Securities        
Accumulated Other Comprehensive Income (Loss) [Roll Forward]        
Beginning balance     (4) (19)
Components of Other Comprehensive Income (Loss):        
Before Reclassifications     1 18
Reclassifications     0 0
Other Comprehensive Gain (Loss), Net of Tax     1 18
Ending balance (3) (1) (3) (1)
Derivatives        
Accumulated Other Comprehensive Income (Loss) [Roll Forward]        
Beginning balance     8 (14)
Components of Other Comprehensive Income (Loss):        
Before Reclassifications     (51) (21)
Reclassifications     143 40
Other Comprehensive Gain (Loss), Net of Tax     92 19
Ending balance 100 5 100 5
Defined Benefit Plans        
Accumulated Other Comprehensive Income (Loss) [Roll Forward]        
Beginning balance     (2,269) (2,468)
Components of Other Comprehensive Income (Loss):        
Before Reclassifications     211 34
Reclassifications     139 52
Other Comprehensive Gain (Loss), Net of Tax     350 86
Ending balance $ (1,919) $ (2,382) (1,919) $ (2,382)
Defined Benefit Plans | Reclassification out of Accumulated Other Comprehensive Income        
Components of Other Comprehensive Income (Loss):        
Employee benefits for reclassified components     182  
Related income taxes     $ 43