CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME
Net income	$ 2,331	$ 2,504	$ 4,082	$ 4,518
Other comprehensive income/(loss), before tax:
Foreign currency translation adjustments	(38)	(248)	124	(10)
Net changes related to available-for-sale securities:
Unrealized gains/(losses) arising during the period	4	1	3	(35)
Reclassification of (gains)/losses to net income	0	0	1	37
Total net changes related to available-for-sale securities	3	1	4	2
Unrealized gains/(losses) on cash flow hedges:
Unrealized gains/(losses) arising during the period	(96)	9	(128)	(256)
Reclassification of (gains)/losses to net income	(176)	102	(274)	11
Total unrealized gains/(losses) on cash flow hedges	(272)	111	(402)	(245)
Retirement-related benefit plans:
Prior service costs/(credits)			0
Net (losses)/gains arising during the period	44	78	105	(68)
Curtailments and settlements	3	10	1	14
Amortization of prior service (credits)/costs	(22)	(27)	(44)	(53)
Amortization of net (gains)/losses	713	693	1,423	1,383
Total retirement-related benefit plans	738	754	1,486	1,277
Other comprehensive income/(loss), before tax	432	617	1,211	1,023
Income tax (expense)/benefit related to items of other comprehensive income	88	(223)	(3)	(21)
Other comprehensive income/(loss)	520	394	1,208	1,002
Total comprehensive income/(loss)	$ 2,852	$ 2,899	$ 5,290	$ 5,520