v3.26.1
Changes in Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Beginning Balance $ 33,474 $ 30,264
Net Change (34) 29
Ending Balance 33,995 31,202
Tax impact for the changes in each component of accumulated other comprehensive (loss) income    
Tax expense (benefit) 2 (61)
Accumulated Other Comprehensive Income (Loss)    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Beginning Balance (3,277) (3,395)
Net Change (34) 29
Ending Balance (3,311) (3,366)
Net Unrealized Gains (Losses) on Debt Securities    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Beginning Balance (4) (9)
Net Change (7) 3
Ending Balance (11) (6)
Tax impact for the changes in each component of accumulated other comprehensive (loss) income    
Tax expense (benefit) (1) 0
Foreign Currency Translation Adjustment Gains (Losses), net of hedges    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Beginning Balance (2,783) (2,924)
Net Change (22) 17
Ending Balance (2,805) (2,907)
Tax impact for the changes in each component of accumulated other comprehensive (loss) income    
Tax expense (benefit) (9) (60)
Net Unrealized Pension and Other Postretirement Benefit Gains (Losses)    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Beginning Balance (490) (462)
Net Change (5) 9
Ending Balance (495) (453)
Tax impact for the changes in each component of accumulated other comprehensive (loss) income    
Tax expense (benefit) $ 12 $ (1)