CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME
Net income	$ 2,404	$ 2,331	$ 4,083	$ 4,082
Other comprehensive income/(loss), before tax:
Foreign currency translation adjustments	(347)	(38)	(513)	124
Net changes related to available-for-sale securities:
Unrealized gains/(losses) arising during the period	0	4	(2)	3
Reclassification of (gains)/losses to net income		0	0	1
Total net changes related to available-for-sale securities	0	3	(2)	4
Unrealized gains/(losses) on cash flow hedges:
Unrealized gains/(losses) arising during the period	(149)	(96)	(89)	(128)
Reclassification of (gains)/losses to net income	434	(176)	380	(274)
Total unrealized gains/(losses) on cash flow hedges	285	(272)	292	(402)
Retirement-related benefit plans:
Prior service costs/(credits)	0		(1)	0
Net (losses)/gains arising during the period	82	44	84	105
Curtailments and settlements	6	3	6	1
Amortization of prior service (credits)/costs	(19)	(22)	(37)	(44)
Amortization of net (gains)/losses	741	713	1,494	1,423
Total retirement-related benefit plans	810	738	1,545	1,486
Other comprehensive income/(loss), before tax	748	432	1,322	1,211
Income tax (expense)/benefit related to items of other comprehensive income	(455)	88	(598)	(3)
Other comprehensive income/(loss), net of tax	294	520	724	1,208
Total comprehensive income/(loss)	$ 2,697	$ 2,852	$ 4,807	$ 5,290