CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME
Net income	$ 2,694	$ 2,726	$ 6,777	$ 6,807
Other comprehensive income/(loss), before tax:
Foreign currency translation adjustments	(22)	89	(535)	213
Net changes related to available-for-sale securities:
Unrealized gains/(losses) arising during the period	0	(1)	(2)	2
Reclassification of (gains)/losses to net income		0		1
Total net changes related to available-for-sale securities	0	(2)	(2)	2
Unrealized gains/(losses) on cash flow hedges:
Unrealized gains/(losses) arising during the period	(46)	(70)	(134)	(198)
Reclassification of (gains)/losses to net income	28	(73)	408	(347)
Total unrealized gains/(losses) on cash flow hedges	(18)	(143)	274	(545)
Retirement-related benefit plans:
Prior service costs/(credits)	0	0	(1)	0
Net (losses)/gains arising during the period	(1)	1	83	106
Curtailments and settlements	2	2	7	3
Amortization of prior service (credits)/costs	(18)	(22)	(55)	(66)
Amortization of net (gains)/losses	737	733	2,231	2,156
Total retirement-related benefit plans	719	713	2,264	2,200
Other comprehensive income/(loss), before tax	678	658	2,001	1,869
Income tax (expense)/benefit related to items of other comprehensive income	(209)	11	(807)	7
Other comprehensive income/(loss), net of tax	470	669	1,194	1,877
Total comprehensive income/(loss)	$ 3,164	$ 3,394	$ 7,970	$ 8,684