v3.26.1
Changes in Accumulated Other Comprehensive Income (Loss) - Schedule of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning Balance $ 33,995 $ 31,202 $ 33,474 $ 30,264
Net Change (44) 118 (78) 147
Ending Balance 34,280 32,311 34,280 32,311
Tax impact for the changes in each component of accumulated other comprehensive (loss) income        
Tax expense (benefit) 9 (143) 11 (204)
Accumulated other comprehensive income (loss)        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning Balance (3,311) (3,366) (3,277) (3,395)
Net Change (44) 118 (78) 147
Ending Balance (3,355) (3,248) (3,355) (3,248)
Net unrealized gains (losses) on debt securities        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning Balance (11) (6) (4) (9)
Net Change (11) 0 (18) 3
Ending Balance (22) (6) (22) (6)
Tax impact for the changes in each component of accumulated other comprehensive (loss) income        
Tax expense (benefit) (3) 0 (4) 0
Foreign Currency Translation Adjustment Gains (Losses), net of hedges        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning Balance (2,805) (2,907) (2,783) (2,924)
Net Change (37) 115 (59) 132
Ending Balance (2,842) (2,792) (2,842) (2,792)
Tax impact for the changes in each component of accumulated other comprehensive (loss) income        
Tax expense (benefit) 9 (137) 0 (197)
Net unrealized pension and other postretirement benefit gains (losses)        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning Balance (495) (453) (490) (462)
Net Change 4 3 (1) 12
Ending Balance (491) (450) (491) (450)
Tax impact for the changes in each component of accumulated other comprehensive (loss) income        
Tax expense (benefit) $ 3 $ (6) $ 15 $ (7)