CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Statement of Comprehensive Income [Abstract]
Net income	$ 2,165	$ 2,194	$ 3,381	$ 3,249
Other comprehensive income/(loss), before tax:
Foreign currency translation adjustments	(9)	(613)	127	(956)
Net unrealized gains/(losses) on available-for-sale securities	0	(5)	0	2
Unrealized gains/(losses) on cash flow hedges:
Unrealized gains/(losses) arising during the period	119	(82)	(56)	(141)
Reclassification of (gains)/losses to net income	96	(419)	439	(742)
Total unrealized gains/(losses) on cash flow hedges	215	(501)	382	(883)
Retirement-related benefit plans:
Prior service costs/(credits)	0	0	0	0
Net gains/(losses) arising during the period	0	0	1	0
Curtailments and settlements	3	5	4	7
Amortization of prior service costs/(credits)	9	(2)	18	(4)
Amortization of net (gains)/losses	197	157	394	308
Total retirement-related benefit plans	208	160	417	311
Other comprehensive income/(loss), before tax	414	(959)	926	(1,525)
Income tax (expense)/benefit related to items of other comprehensive income	(150)	493	(364)	753
Other comprehensive income/(loss), net of tax	263	(466)	562	(772)
Total comprehensive income	$ 2,429	$ 1,728	$ 3,943	$ 2,476