CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME
Net income	$ 1,325	$ 1,361	$ 2,280	$ 2,536
Other comprehensive income/(loss), before tax
Foreign currency translation adjustments	28	4	577	(915)
Net changes related to available-for-sale securities
Unrealized gains/(losses) arising during the period	0	1	0	1
Total net changes related to available-for-sale securities	0	1	0	1
Unrealized gains/(losses) on cash flow hedges
Unrealized gains/(losses) arising during the period	(34)	(36)	153	(216)
Reclassification of (gains)/losses to net income	90	(59)	251	32
Total unrealized gains/(losses) on cash flow hedges	56	(94)	404	(184)
Retirement-related benefit plans
Prior service costs/(credits)	0		0	(4)
Net (losses)/gains arising during the period	2	57	22	65
Curtailments and settlements	16	13	34	21
Amortization of prior service (credits)/costs	1	0	4	1
Amortization of net (gains)/losses	643	566	1,291	1,136
Total retirement-related benefit plans	661	637	1,350	1,219
Other comprehensive income/(loss), before tax	745	548	2,330	121
Income tax (expense)/benefit related to items of other comprehensive income	(140)	(21)	(645)	(281)
Other comprehensive income/(loss), net of tax	605	527	1,685	(160)
Total comprehensive income	$ 1,930	$ 1,888	$ 3,965	$ 2,377