CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Statement of Comprehensive Income [Abstract]
Net income/(loss)	[1]	$ 1,744	$ (330)	$ 4,993	$ 3,109
Other comprehensive income/(loss), before tax:
Foreign currency translation adjustments		(100)	(330)	(1,056)	(273)
Net changes related to available-for-sale securities:
Unrealized gains/(losses) arising during the period		(2)	0	1	1
Reclassification of (gains)/losses to net income		0	0	0	0
Total net changes related to available-for-sale securities		(2)	0	1	1
Unrealized gains/(losses) on cash flow hedges:
Unrealized gains/(losses) arising during the period		20	(215)	(121)	64
Reclassification of (gains)/losses to net income		94	(234)	(649)	(206)
Total unrealized gains/(losses) on cash flow hedges		113	(449)	(769)	(142)
Retirement-related benefit plans:
Prior service costs/(credits)		0	0	0	0
Net gains/(losses) arising during the period		0	100	0	101
Curtailments and settlements		2	2,727	8	2,731
Amortization of prior service costs/(credits)		(2)	(2)	(5)	(5)
Amortization of net (gains)/losses		158	246	466	765
Total retirement-related benefit plans		158	3,072	469	3,592
Other comprehensive income/(loss), before tax		170	2,293	(1,355)	3,178
Income tax (expense)/benefit related to items of other comprehensive income		(112)	(392)	641	(835)
Other comprehensive income/(loss), net of tax		58	1,900	(715)	2,343
Total comprehensive income		$ 1,802	$ 1,570	$ 4,278	$ 5,452

[1] 2024 includes the impact of a pension settlement charge. Refer to note U, "Retirement-Related Benefits," in the company's 2024 Annual Report for additional information.