CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Statement of Comprehensive Income [Abstract]
Net income/(loss)	[1]	$ (330)	$ 1,704	$ 3,109	$ 4,214
Other comprehensive income/(loss), before tax:
Foreign currency translation adjustments		(330)	151	(273)	180
Net changes related to available-for-sale securities:
Unrealized gains/(losses) arising during the period		0	0	1	(1)
Reclassification of (gains)/losses to net income		0	0	0	0
Total net changes related to available-for-sale securities		0	0	1	(1)
Unrealized gains/(losses) on cash flow hedges:
Unrealized gains/(losses) arising during the period		(215)	131	64	279
Reclassification of (gains)/losses to net income		(234)	202	(206)	51
Total unrealized gains/(losses) on cash flow hedges		(449)	333	(142)	330
Retirement-related benefit plans:
Prior service costs/(credits)		0	0	0	0
Net (losses)/gains arising during the period		100	102	101	104
Curtailments and settlements		2,727	2	2,731	7
Amortization of prior service costs/(credits)		(2)	(2)	(5)	(6)
Amortization of net (gains)/losses		246	128	765	389
Total retirement-related benefit plans		3,072	230	3,592	494
Other comprehensive income/(loss), before tax		2,293	714	3,178	1,003
Income tax (expense)/benefit related to items of other comprehensive income		(392)	(313)	(835)	(361)
Other comprehensive income/(loss), net of tax		1,900	402	2,343	642
Total comprehensive income		$ 1,570	$ 2,105	$ 5,452	$ 4,857

[1] 2024 includes the impact of a one-time, non-cash pension settlement charge. Refer to note 18, "Retirement-Related Benefits," for additional information.