Stockholders' Equity (Schedule of Components of Other Comprehensive Income / (Loss)) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cumulative translation adjustment, pre-tax	$ 25		$ 77		$ (457)
Cumulative translation adjustment, tax	0		0		0
Cumulative translation adjustment, after-tax	25		77		(457)
Additions and revaluations of derivatives designated as cash flow hedges, pre-tax	(58)	[1]	8	[1]	10	[1]
Additions and revaluations of derivatives designated as cash flow hedges, tax	22		(6)		(5)
Additions and revaluations of derivatives designated as cash flow hedges, after-tax	(36)		2		5
Clearance of hedge results to earnings, pre-tax	(25)		(65)		96
Net revaluation and clearance of cash flow hedges to earnings, pre-tax	(83)		(57)		106
Net revaluation and clearance of cash flow hedges to earnings, tax	32		22		(41)
Net revaluation and clearance of cash flow hedges to earnings, after-tax	(51)		(35)		65
Net unrealized (loss) gain on securities, pre-tax	1		(2)		2
Net unrealized (loss) gain on securities, tax	(1)		1		(1)
Net unrealized (loss) gain on securities, after-tax	0		(1)		1
Other comprehensive income (loss), before tax	4,868		253		(4,300)
Other comprehensive income (loss), tax	(1,665)		(121)		1,322
Other comprehensive income (loss), after-tax	3,203		132		(2,978)
Pension Plans, Defined Benefit [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net gain (loss), pre-tax	3,293	[1]	(1,433)	[1]	(4,069)	[1]
Net gain (loss), tax	(1,136)		437		1,402
Net gain (loss), after-tax	2,157		(996)		(2,667)
Prior service benefit (cost), pre-tax	62	[1]	22	[1]	(2)	[1]
Prior service benefit (cost), tax	(22)		(8)		0
Prior service benefit (cost), after-tax	40		14		(2)
Amortization of prior service cost (benefit), pre-tax	8	[2]	13	[2]	16	[2]
Amortization of prior service cost (benefit), tax	(2)		(4)		(5)
Amortization of prior service cost (benefit), after-tax	6		9		11
Amortization of loss, pre-tax	957	[2]	887	[2]	613	[2]
Amortization of loss, tax	(331)		(305)		(210)
Amortization of loss, after-tax	626		582		403
Curtailment (gain) loss, pre-tax	1	[2]	2	[2]	0	[2]
Curtailment (gain) loss, tax	0		0		0
Curtailment (gain) loss, after-tax	1		2		0
Settlement loss, pre-tax	152	[2]	5	[2]	0	[2]
Settlement loss, tax	(45)		(2)		0
Settlement loss, after-tax	107		3		0
Benefit plans, net, pre-tax	4,473		(504)		(3,442)
Benefit plans, net, tax	(1,536)		118		1,187
Benefit plans, net, after-tax	2,937		(386)		(2,255)
Other Long-Term Employee Benefit Plans [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net gain (loss), pre-tax	513	[1]	(60)	[1]	(437)	[1]
Net gain (loss), tax	(184)		17		151
Net gain (loss), after-tax	329		(43)		(286)
Prior service benefit (cost), pre-tax	211	[1]	857	[1]	(11)	[1]
Prior service benefit (cost), tax	(72)		(299)		4
Prior service benefit (cost), after-tax	139		558		(7)
Amortization of prior service cost (benefit), pre-tax	(195)	[2]	(155)	[2]	(121)	[2]
Amortization of prior service cost (benefit), tax	69		54		43
Amortization of prior service cost (benefit), after-tax	(126)		(101)		(78)
Amortization of loss, pre-tax	76	[2]	94	[2]	60	[2]
Amortization of loss, tax	(27)		(33)		(21)
Amortization of loss, after-tax	49		61		39
Curtailment (gain) loss, pre-tax	(154)	[2]	3	[2]	0	[2]
Curtailment (gain) loss, tax	54		(1)		0
Curtailment (gain) loss, after-tax	(100)		2		0
Settlement loss, pre-tax	1	[2]	0	[2]	0	[2]
Settlement loss, tax	0		0		0
Settlement loss, after-tax	1		0		0
Benefit plans, net, pre-tax	452		739		(509)
Benefit plans, net, tax	(160)		(262)		177
Benefit plans, net, after-tax	292		477		(332)
Foreign Currency Contract [Member] | Net sales [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Clearance of hedge results to earnings, pre-tax	(1)		(21)		15
Clearance of hedge results to earnings, tax	0		8		(5)
Clearance of hedge results to earnings, after-tax	(1)		(13)		10
Commodity Contract [Member] | Cost of goods sold [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Clearance of hedge results to earnings, pre-tax	(24)		(44)		81
Clearance of hedge results to earnings, tax	10		20		(31)
Clearance of hedge results to earnings, after-tax	$ (14)		$ (24)		$ 50

[1] These amounts represent changes in accumulated other comprehensive income excluding changes due to reclassifying amounts to the Consolidated Income Statements.

[2] These accumulated other comprehensive income components are included in the computation of net periodic benefit cost of the company's pension and other long-term employee benefit plans. See Note 18 for additional information.