Other (Income) and Expense (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Other Income and Expenses [Abstract]
(Gains)/losses on foreign currency transactions	$ (328)	$ 443
(Gains)/losses on derivative instruments	423	(442)
Interest income	(152)	(191)
Net (gains)/losses from securities and investment assets	(9)	29
Retirement-related costs/(income)	96	23
Other	(31)	(26)
Total other (income) and expense	$ (1)	$ (165)