Other (Income) and Expense (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Other Income and Expenses [Abstract]
(Gains)/losses on foreign currency transactions	$ (52)	$ (84)	$ (487)	$ 1,131
(Gains)/losses on derivative instruments	21	162	560	(881)
Interest income	(87)	(150)	(325)	(513)
Net (gains)/losses from securities and investment assets	18	(3)	(97)	8
Retirement-related costs/(income)	91	13	283	61
Other	(100)	(110)	(230)	(181)
Total other (income) and expense	$ (109)	$ (173)	$ (296)	$ (376)