Equity Activity: (Details 1) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013
Other comprehensive income/(loss), before tax
Foreign currency translation adjustments, before tax	$ 339		$ (936)		$ 278		$ (1,341)
Net changes related to available-for-sale securities, before tax
Unrealized gains/(losses) arising during the period, before tax	1		0		1		(2)
Reclassification of (gains)/losses to other (income) and expense, before tax	0		0		5		0
Subsequent changes in previously impaired securities arising during the period, before tax			0				1
Total net changes related to available-for-sale securities	1		0		5		(1)
Unrealized gains/(losses) on cash flow hedges, before tax
Unrealized gains/(losses) arising during the period, before tax	(16)		(10)		72		350
Reclassification of (gains)/losses to net income, before tax	34		(47)		33		(103)
Total unrealized gains/(losses) on cash flow hedges	18		(57)		104		247
Retirement-related benefit plans, before tax
Prior service costs/(credits), before tax	0		0		1		33
Net (losses)/gains arising during the period, before tax	15		210		47		195
Curtailments and settlements	8		0		13		0
Amortization of prior service (credits)/costs, before tax	(29)		(28)		(59)		(58)
Amortization of net (gains)/losses, before tax	639		864		1,288		1,750
Total retirement-related benefit plans	633		1,045		1,290		1,920
Other comprehensive income/(loss), before tax	991		53		1,678		826
Other comprehensive income/(loss), tax
Foreign currency translation adjustments, tax	19		(23)		29		(107)
Net changes related to available-for-sale securities, tax
Unrealized gains/(losses) arising during the period, tax	0		0		0		1
Subsequent changes in previously impaired securities arising during the period, tax			0				0
Total net changes related to available-for-sale securities, tax	0		0		(2)		1
Unrealized gains/(losses) on cash flow hedges, tax
Unrealized gains/(losses) arising during the period, tax	2		9		(31)		(119)
Total unrealized gains/(losses) on cash flow hedges, tax	(8)		28		(40)		(79)
Retirement-related benefit plans, tax
Prior service costs/(credits), tax	0	[1]	0	[1]	0	[1]	(11)	[1]
Net (losses)/gains arising during the period, tax	(5)	[1]	(71)	[1]	(16)	[1]	(67)	[1]
Curtailments and settlements, tax	(3)	[1]			(4)	[1]
Amortization of prior service (credits)/costs, tax	10	[1]	10	[1]	20	[1]	20	[1]
Amortization of net (gains)/losses, tax	(218)	[1]	(304)	[1]	(432)	[1]	(597)	[1]
Total retirement-related benefit plans, tax	(216)	[1]	(366)	[1]	(433)	[1]	(655)	[1]
Other comprehensive income/(loss), tax	(205)		(361)		(445)		(842)
Other comprehensive income/(loss), net of tax
Foreign currency translation adjustments, net of tax	358		(959)		307		(1,448)
Net changes related to available-for-sale securities, net of tax
Unrealized gains/(losses) arising during the period, net of tax	0		0		1		(2)
Reclassification of (gains)/losses to other (income) and expense, net of tax	0	[2]	0	[2]	3	[2]	0	[2]
Subsequent changes in previously impaired securities arising during the period, net of tax			0				1
Total net changes related to available-for-sale securities, net of tax	1		0		3		0
Unrealized gains/(losses) on cash flow hedges, net of tax
Unrealized gains/(losses) arising during the period, net of tax	(14)		(1)		41		231
Total unrealized gains/(losses) on cash flow hedges, net of tax	10		(29)		64		168
Retirement-related benefit plans, net of tax
Prior service costs/(credits), net of tax	0	[1]	0	[1]	0	[1]	21	[1]
Net (losses)/gains arising during the period, net of tax	10	[1]	138	[1]	31	[1]	129	[1]
Curtailments and settlements, net of tax	6	[1]			8	[1]
Amortization of prior service (credits)/costs, net of tax	(19)	[1]	(18)	[1]	(39)	[1]	(38)	[1]
Amortization of net (gains)/losses, net of tax	422	[1]	559	[1]	856	[1]	1,153	[1]
Total retirement-related benefit plans, net of tax	418	[1]	679	[1]	857	[1]	1,265	[1]
Other comprehensive income/(loss)	787		(309)		1,232		(16)
Cost of sales
Unrealized gains/(losses) on cash flow hedges, before tax
Reclassification of (gains)/losses to net income, before tax	23		7		49		(3)
Unrealized gains/(losses) on cash flow hedges, tax
Reclassification of (gains)/losses to other (income) and expense, tax	(7)		(2)		(17)		1
Unrealized gains/(losses) on cash flow hedges, net of tax
Reclassification of (gains)/losses to net income, net of tax	16		4		32		(2)
SG&A expense
Unrealized gains/(losses) on cash flow hedges, before tax
Reclassification of (gains)/losses to net income, before tax	7		(5)		8		(15)
Unrealized gains/(losses) on cash flow hedges, tax
Reclassification of (gains)/losses to other (income) and expense, tax	(1)		2		(1)		6
Unrealized gains/(losses) on cash flow hedges, net of tax
Reclassification of (gains)/losses to net income, net of tax	5		(3)		7		(10)
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		5		0
Unrealized gains/(losses) on cash flow hedges, before tax
Reclassification of (gains)/losses to net income, before tax	5		(48)		(24)		(85)
Net changes related to available-for-sale securities, tax
Reclassification of (gains)/losses to other (income) and expense, tax	0		0		(2)		0
Unrealized gains/(losses) on cash flow hedges, tax
Reclassification of (gains)/losses to other (income) and expense, tax	(2)		19		9		33
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		3		0
Unrealized gains/(losses) on cash flow hedges, net of tax
Reclassification of (gains)/losses to net income, net of tax	3		(30)		(15)		(52)
Interest expense
Unrealized gains/(losses) on cash flow hedges, before tax
Reclassification of (gains)/losses to net income, before tax	(1)		0		0		0
Unrealized gains/(losses) on cash flow hedges, tax
Reclassification of (gains)/losses to other (income) and expense, 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	$ (1)		$ 0		$ 0		$ 0

[1] These AOCI components are included in the computation of net periodic pension cost. (See note 8, "Retirement-Related Benefits," for additional information.)

[2] There were no writedowns for the six months ended June 30, 2014 and 2013, respectively.