v3.26.1
Stockholders' Equity and Noncontrolling Interests - Accumulated Other Comprehensive Loss (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Accumulated Other Comprehensive Loss, Net of Tax [Roll Forward]    
Balance at beginning of period $ 63,168 $ 65,590
Other comprehensive income (loss), net of tax (2) 134
Balance at end of period 64,694 66,427
Foreign Currency Translation Adjustments    
Accumulated Other Comprehensive Loss, Net of Tax [Roll Forward]    
Balance at beginning of period (3,277) (3,630)
Other comprehensive income (loss), net of tax (42) 148
Balance at end of period (3,319) (3,482)
Defined Benefit Plans    
Accumulated Other Comprehensive Loss, Net of Tax [Roll Forward]    
Balance at beginning of period (7,330) (7,669)
Other comprehensive income (loss) and noncontrolling interests before reclassification adjustment, net of tax 45 (59)
Reclassification adjustment, net of tax 27 22
Other comprehensive income (loss), net of tax 72 (37)
Balance at end of period (7,258) (7,706)
Unrealized Gain (Loss) on Cash Flow Hedges    
Accumulated Other Comprehensive Loss, Net of Tax [Roll Forward]    
Balance at beginning of period 226 86
Other comprehensive income (loss) and noncontrolling interests before reclassification adjustment, net of tax 1 238
Reclassification adjustment, net of tax 73 (256)
Other comprehensive income (loss), net of tax 74 (18)
Balance at end of period $ 300 $ 68