CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 1,605	$ 927
Other comprehensive income/(loss), before tax:
Foreign currency translation adjustments	55	(87)
Net changes related to available-for-sale securities:
Unrealized gains/(losses) arising during the period	0	15
Reclassification of (gains)/losses to net income	0	0
Total net changes related to available-for-sale securities	0	15
Unrealized gains/(losses) on cash flow hedges:
Unrealized gains/(losses) arising during the period	176	(29)
Reclassification of (gains)/losses to net income	70	(122)
Total unrealized gains/(losses) on cash flow hedges	246	(151)
Retirement-related benefit plans:
Prior service costs/(credits)	0	0
Net (losses)/gains arising during the period	1	2
Curtailments and settlements	2	(1)
Amortization of prior service (credits)/costs	(2)	(2)
Amortization of net (gains)/losses	261	131
Total retirement-related benefit plans	262	130
Other comprehensive income/(loss), before tax	563	(93)
Income tax (expense)/benefit related to items of other comprehensive income	(289)	53
Other comprehensive income/(loss), net of tax	273	(40)
Total comprehensive income	$ 1,878	$ 888