v3.25.4
Accumulated Other Comprehensive Income (Loss) - Components of Accumulated Other Comprehensive Loss in the Equity Section of the Balance Sheet (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Beginning balance $ 64,796 $ 49,279 $ 48,003
Other comprehensive income (loss) 562 (800) 327
Ending balance 64,487 64,796 49,279
Accumulated Other Comprehensive Income/(Loss)      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Beginning balance (6,473) (5,673) (6,000)
Other comprehensive income (loss) 562 (800) 327
Ending balance (5,911) (6,473) (5,673)
Defined Benefit Plans      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Beginning balance (390) (393) (448)
Other comprehensive income (loss) 55 3 55
Ending balance (335) (390) (393)
Net Unrealized Holding Gain/(Loss) on Securities      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Beginning balance 3 2 (11)
Other comprehensive income (loss) 5 1 13
Ending balance 8 3 2
Foreign Currency Translation      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Beginning balance (6,104) (5,344) (5,541)
Other comprehensive income (loss) 502 (760) 197
Ending balance (5,602) (6,104) (5,344)
Unrealized Gain/(Loss) on Hedging Activities      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Beginning balance 18 62 0
Other comprehensive income (loss) 0 (44) 62
Ending balance $ 18 $ 18 $ 62