Equity Activity (Details 1) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Other comprehensive income/(loss), before tax:
Foreign currency translation adjustments, before tax	$ 102	$ 339	$ (350)	$ 278
Net changes related to available-for-sale securities, before tax:
Unrealized gains/(losses) arising during the period, before tax	(15)	1	17	1
Reclassification of (gains)/losses to other (income) and expense, before tax	0	0	0	5
Total net changes related to available-for-sale securities	(15)	1	16	5
Unrealized gains/(losses) on cash flow hedges, before tax:
Unrealized gains/(losses) arising during the period, before tax	(187)	(16)	432	72
Reclassification of (gains)/losses to net income, before tax	(321)	34	(570)	33
Total unrealized gains/(losses) on cash flow hedges	(508)	18	(138)	104
Retirement-related benefit plans, before tax:
Prior service costs/(credits), before tax	1	0	6	1
Net (losses)/gains arising during the period, before tax	93	15	16	47
Curtailments and settlements, before taxes	3	8	7	13
Amortization of prior service (credits)/costs, before tax	(25)	(29)	(51)	(59)
Amortization of net (gains)/losses, before tax	821	639	1,656	1,288
Total retirement-related benefit plans	894	633	1,635	1,290
Other comprehensive income/(loss), before tax	472	991	1,163	1,678
Other comprehensive income/(loss), tax:
Foreign currency translation adjustments, tax	67	19	(199)	29
Net changes related to available-for-sale securities, tax:
Unrealized gains/(losses) arising during the period, tax	6	0	(6)	0
Total net changes related to available-for-sale securities, tax	6	0	(6)	(2)
Unrealized gains/(losses) on cash flow hedges, tax:
Unrealized gains/(losses) arising during the period, tax	60	2	(158)	(31)
Total unrealized gains/(losses) on cash flow hedges, tax	175	(8)	44	(40)
Retirement-related benefit plans, tax:
Prior service costs/(credits), tax	0	0	(2)	0
Net (losses)/gains arising during the period, tax	(31)	(5)	(5)	(16)
Curtailments and settlements, tax	(1)	(3)	(2)	(4)
Amortization of prior service (credits)/costs, tax	9	10	17	20
Amortization of net (gains)/losses, tax	(285)	(218)	(565)	(432)
Total retirement-related benefit plans, tax	(310)	(216)	(558)	(433)
Other comprehensive income/(loss), tax	(62)	(205)	(719)	(445)
Other comprehensive income/(loss), net of tax:
Foreign currency translation adjustments, net of tax	169	358	(549)	307
Net changes related to available-for-sale securities, net of tax:
Unrealized gains/(losses) arising during the period, net of tax	(10)	0	10	1
Reclassification of (gains)/losses to other (income) and expense, net of tax	0	0	0	3
Total net changes related to available-for-sale securities, net of tax	(10)	1	10	3
Unrealized gains/(losses) on cash flow hedges, net of tax:
Unrealized gains/(losses) arising during the period, net of tax	(127)	(14)	274	41
Total unrealized gains/(losses) on cash flow hedges, net of tax	(333)	10	(94)	64
Retirement-related benefit plans, net of tax:
Prior service costs/(credits), net of tax	1	0	4	0
Net (losses)/gains arising during the period, net of tax	62	10	10	31
Curtailments and settlements, net of tax	2	6	5	8
Amortization of prior service (credits)/costs, net of tax	(16)	(19)	(33)	(39)
Amortization of net (gains)/losses, net of tax	536	422	1,091	856
Total retirement-related benefit plans, net of tax	585	418	1,077	857
Other comprehensive income/(loss)	411	787	444	1,232
Cost of sales
Unrealized gains/(losses) on cash flow hedges, before tax:
Reclassification of (gains)/losses to net income, before tax	(58)	23	(108)	49
Unrealized gains/(losses) on cash flow hedges, tax:
Reclassification of (gains)/losses to net income, tax	17	(7)	32	(17)
Unrealized gains/(losses) on cash flow hedges, net of tax:
Reclassification of (gains)/losses to net income, net of tax	(41)	16	(76)	32
SG&A expense
Unrealized gains/(losses) on cash flow hedges, before tax:
Reclassification of (gains)/losses to net income, before tax	(42)	7	(82)	8
Unrealized gains/(losses) on cash flow hedges, tax:
Reclassification of (gains)/losses to net income, tax	12	(1)	24	(1)
Unrealized gains/(losses) on cash flow hedges, net of tax:
Reclassification of (gains)/losses to net income, net of tax	(30)	5	(58)	7
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	0	0	0	5
Unrealized gains/(losses) on cash flow hedges, before tax:
Reclassification of (gains)/losses to net income, before tax	(221)	5	(380)	(24)
Net changes related to available-for-sale securities, tax:
Reclassification of (gains)/losses to other (income) and expense, tax	0	0	0	(2)
Unrealized gains/(losses) on cash flow hedges, tax:
Reclassification of (gains)/losses to net income, tax	85	(2)	146	9
Net changes related to available-for-sale securities, net of tax:
Reclassification of (gains)/losses to other (income) and expense, net of tax	0	0	0	3
Unrealized gains/(losses) on cash flow hedges, net of tax:
Reclassification of (gains)/losses to net income, net of tax	(136)	3	(234)	(15)
Interest expense
Unrealized gains/(losses) on cash flow hedges, before tax:
Reclassification of (gains)/losses to net income, before tax	0	(1)	0	0
Unrealized gains/(losses) on cash flow hedges, tax:
Reclassification of (gains)/losses to net income, tax	0	0	0	0
Unrealized gains/(losses) on cash flow hedges, net of tax:
Reclassification of (gains)/losses to net income, net of tax	$ 0	$ (1)	$ 0	$ 0