CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Statement of Comprehensive Income [Abstract]
Net income	$ 2,190	$ 1,744	$ 5,571	$ 4,993
Other comprehensive income/(loss), before tax:
Foreign currency translation adjustments	79	(100)	206	(1,056)
Net unrealized gains/(losses) on available-for-sale securities	0	(2)	0	1
Unrealized gains/(losses) on cash flow hedges:
Unrealized gains/(losses) arising during the period	(66)	20	(123)	(121)
Reclassification of (gains)/losses to net income	5	94	443	(649)
Total unrealized gains/(losses) on cash flow hedges	(61)	113	321	(769)
Retirement-related benefit plans:
Prior service costs/(credits)	0	0	0	0
Net gains/(losses) arising during the period	(2)	0	(1)	0
Curtailments and settlements	2	2	7	8
Amortization of prior service costs/(credits)	9	(2)	26	(5)
Amortization of net (gains)/losses	196	158	590	466
Total retirement-related benefit plans	205	158	622	469
Other comprehensive income/(loss), before tax	222	170	1,148	(1,355)
Income tax (expense)/benefit related to items of other comprehensive income	(56)	(112)	(420)	641
Other comprehensive income/(loss), net of tax	166	58	728	(715)
Total comprehensive income	$ 2,356	$ 1,802	$ 6,299	$ 4,278