Equity Activity (Details 1) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Other comprehensive income/(loss), before tax:
Foreign currency translation adjustments, before tax	$ 239	$ (452)
Net changes related to available-for-sale securities, before tax:
Unrealized gains/(losses) arising during the period, before tax	(36)	32
Reclassification of (gains)/losses to other (income) and expense, before tax	37	0
Total net changes related to available-for-sale securities	1	32
Unrealized gains/(losses) on cash flow hedges, before tax:
Unrealized gains/(losses) arising during the period, before tax	(265)	619
Reclassification of (gains)/losses to net income, before tax	(91)	(249)
Total unrealized gains/(losses) on cash flow hedges	(356)	370
Retirement-related benefit plans, before tax:
Prior service costs/(credits), before tax		5
Net (losses)/gains arising during the period, before tax	(147)	(77)
Curtailments and settlements, before taxes	5	4
Amortization of prior service (credits)/costs, before tax	(25)	(26)
Amortization of net (gains)/losses, before tax	690	835
Total retirement-related benefit plans	522	740
Other comprehensive income/(loss), before tax	406	690
Other comprehensive income/(loss), tax:
Foreign currency translation adjustments, tax	266	(266)
Net changes related to available-for-sale securities, tax:
Unrealized gains/(losses) arising during the period, tax	14	(12)
Total net changes related to available-for-sale securities, tax	0	(12)
Unrealized gains/(losses) on cash flow hedges, tax:
Unrealized gains/(losses) arising during the period, tax	91	(218)
Total unrealized gains/(losses) on cash flow hedges, tax	124	(131)
Retirement-related benefit plans, tax:
Prior service costs/(credits), tax		(2)
Net (losses)/gains arising during the period, tax	53	26
Curtailments and settlements, tax	(2)	(1)
Amortization of prior service (credits)/costs, tax	9	9
Amortization of net (gains)/losses, tax	(248)	(280)
Total retirement-related benefit plans, tax	(187)	(248)
Other comprehensive income/(loss), tax	202	(657)
Other comprehensive income/(loss), net of tax:
Foreign currency translation adjustments, net of tax	505	(718)
Net changes related to available-for-sale securities, net of tax:
Unrealized gains/(losses) arising during the period, net of tax	(22)	20
Reclassification of (gains)/losses to other (income) and expense, net of tax	23	0
Total net changes related to available-for-sale securities, net of tax	0	20
Unrealized gains/(losses) on cash flow hedges, net of tax:
Unrealized gains/(losses) arising during the period, net of tax	(174)	401
Total unrealized gains/(losses) on cash flow hedges, net of tax	(232)	239
Retirement-related benefit plans, net of tax:
Prior service costs/(credits), net of tax		3
Net (losses)/gains arising during the period, net of tax	(94)	(52)
Curtailments and settlements, net of tax	3	3
Amortization of prior service (credits)/costs, net of tax	(16)	(17)
Amortization of net (gains)/losses, net of tax	442	555
Total retirement-related benefit plans, net of tax	335	492
Other comprehensive income/(loss)	608	33
Cost of sales
Unrealized gains/(losses) on cash flow hedges, before tax:
Reclassification of (gains)/losses to net income, before tax	(3)	(50)
Unrealized gains/(losses) on cash flow hedges, tax:
Reclassification of (gains)/losses to net income, tax	0	15
Unrealized gains/(losses) on cash flow hedges, net of tax:
Reclassification of (gains)/losses to net income, net of tax	(3)	(35)
SG&A expense
Unrealized gains/(losses) on cash flow hedges, before tax:
Reclassification of (gains)/losses to net income, before tax	(3)	(40)
Unrealized gains/(losses) on cash flow hedges, tax:
Reclassification of (gains)/losses to net income, tax	0	11
Unrealized gains/(losses) on cash flow hedges, net of tax:
Reclassification of (gains)/losses to net income, net of tax	(3)	(28)
Other (income) and expense
Net changes related to available-for-sale securities, before tax:
Reclassification of (gains)/losses to other (income) and expense, before tax	37	0
Unrealized gains/(losses) on cash flow hedges, before tax:
Reclassification of (gains)/losses to net income, before tax	(87)	(160)
Net changes related to available-for-sale securities, tax:
Reclassification of (gains)/losses to other (income) and expense, tax	(14)	0
Unrealized gains/(losses) on cash flow hedges, tax:
Reclassification of (gains)/losses to net income, tax	33	61
Net changes related to available-for-sale securities, net of tax:
Reclassification of (gains)/losses to other (income) and expense, net of tax	23	0
Unrealized gains/(losses) on cash flow hedges, net of tax:
Reclassification of (gains)/losses to net income, net of tax	(53)	(98)
Interest expense
Unrealized gains/(losses) on cash flow hedges, before tax:
Reclassification of (gains)/losses to net income, before tax	2	0
Unrealized gains/(losses) on cash flow hedges, tax:
Reclassification of (gains)/losses to net income, tax	(1)	0
Unrealized gains/(losses) on cash flow hedges, net of tax:
Reclassification of (gains)/losses to net income, net of tax	$ 1	$ 0