v3.26.1
Stockholders' Equity and Noncontrolling Interests - Accumulated Other Comprehensive Loss (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Mar. 31, 2026
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2026
Jun. 30, 2025
Accumulated Other Comprehensive Loss, Net of Tax [Roll Forward]            
Balance at beginning of period $ 64,694 $ 63,168 $ 66,427 $ 65,590 $ 63,168 $ 65,590
Other comprehensive income (loss), net of tax 103 (2) 283 134 101 417
Balance at end of period 63,641 64,694 68,459 66,427 63,641 68,459
Foreign Currency Translation Adjustments            
Accumulated Other Comprehensive Loss, Net of Tax [Roll Forward]            
Balance at beginning of period (3,319) (3,277) (3,482) (3,630) (3,277) (3,630)
Other comprehensive income (loss), net of tax 111   350   69 497
Balance at end of period (3,208) (3,319) (3,133) (3,482) (3,208) (3,133)
Defined Benefit Plans            
Accumulated Other Comprehensive Loss, Net of Tax [Roll Forward]            
Balance at beginning of period (7,258) (7,330) (7,706) (7,669) (7,330) (7,669)
Other comprehensive income (loss) and noncontrolling interests before reclassification adjustment, net of tax 11   (166)   56 (225)
Reclassification adjustment, net of tax 27   23   53 46
Other comprehensive income (loss), net of tax 37   (142)   109 (179)
Balance at end of period (7,220) (7,258) (7,848) (7,706) (7,220) (7,848)
Unrealized Gain (Loss) on Cash Flow Hedges            
Accumulated Other Comprehensive Loss, Net of Tax [Roll Forward]            
Balance at beginning of period 300 226 68 86 226 86
Other comprehensive income (loss) and noncontrolling interests before reclassification adjustment, net of tax 39   447   40 698
Reclassification adjustment, net of tax (83)   (485)   (9) (754)
Other comprehensive income (loss), net of tax (44)   (38)   30 (57)
Balance at end of period $ 256 $ 300 $ 30 $ 68 $ 256 $ 30