Stockholders' Equity (Schedule of Components of Other Comprehensive Income / (Loss)) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2015		Dec. 31, 2014		Dec. 31, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cumulative translation adjustment, pre-tax		$ (1,605)	[1]	$ (876)	[1]	$ 25
Cumulative translation adjustment, tax		0		0		0
Cumulative translation adjustment, after-tax		(1,605)	[1]	(876)	[1]	25
Additions and revaluations of derivatives designated as cash flow hedges, pre-tax	[2]	(37)		53		(58)
Additions and revaluations of derivatives designated as cash flow hedges, tax		12		(20)		22
Additions and revaluations of derivatives designated as cash flow hedges, after-tax		(25)		33		(36)
Clearance of hedge results to earnings, pre-tax		12		15		(25)
Net revaluation and clearance of cash flow hedges to earnings, pre-tax		(25)		68		(83)
Net revaluation and clearance of cash flow hedges to earnings, tax		7		(26)		32
Net revaluation and clearance of cash flow hedges to earnings, after-tax		(18)		42		(51)
Unrealized (loss) gain on securities arising during the period, pre-tax		(17)	[3]	0		1
Unrealized (loss) gain on securities arising during the period, tax		0		0		(1)
Unrealized (loss) gain on securities arising during the period, after-tax		(17)	[3]	0		0
Net unrealized (loss) gain on securities, pre-tax		(19)		0		1
Net unrealized (loss) gain on securities, tax		0		0		(1)
Net unrealized (loss) gain on securities, after-tax		(19)		0		0
Other comprehensive (loss) income, before tax		(1,133)		(4,668)		4,868
Other comprehensive (loss) income, tax		(175)		1,403		(1,665)
Other comprehensive (loss) income, after-tax		(1,308)		(3,265)		3,203
Pension Benefit Plans, Net [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net (loss) gain, pre-tax	[2]	(57)		(4,131)		3,293
Net (loss) gain, tax		10		1,497		(1,136)
Net (loss) gain, after-tax		(47)		(2,634)		2,157
Prior service benefit, pre-tax	[2]	0		44		62
Prior service benefit, tax		0		(11)		(22)
Prior service benefit, after-tax		0		33		40
Effect of foreign exchange rates, before tax	[2]	119		0		0
Effect of foreign exchange rates, tax		(33)		0		0
Effect of foreign exchange rates, after-tax		86		0		0
Amortization of prior service cost (benefit), pre-tax	[4]	(9)		2		8
Amortization of prior service cost (benefit), tax		2		0		(2)
Amortization of prior service cost (benefit), after-tax		(7)		2		6
Amortization of loss, pre-tax	[4]	768		601		957
Amortization of loss, tax		(273)		(209)		(331)
Amortization of loss, after-tax		495		392		626
Curtailment (gain) loss, pre-tax	[4]	(6)		4		1
Curtailment (gain) loss, tax		3		(1)		0
Curtailment (gain) loss, after-tax		(3)		3		1
Settlement loss, pre-tax	[4]	76		7		152
Settlement loss, tax		(26)		(2)		(45)
Settlement loss, after-tax		50		5		107
Benefit plans, net, pre-tax		891		(3,473)		4,473
Benefit plans, net, tax		(317)		1,274		(1,536)
Benefit plans, net, after-tax		574		(2,199)		2,937
Other Long-Term Employee Benefit Plans [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net (loss) gain, pre-tax	[2]	4		(280)		513
Net (loss) gain, tax		(1)		100		(184)
Net (loss) gain, after-tax		3		(180)		329
Prior service benefit, pre-tax	[2]	0		50		211
Prior service benefit, tax		0		(1)		(72)
Prior service benefit, after-tax		0		49		139
Effect of foreign exchange rates, before tax	[2]	(1)		0		0
Effect of foreign exchange rates, tax		1		0		0
Effect of foreign exchange rates, after-tax		0		0		0
Amortization of prior service cost (benefit), pre-tax	[4]	(182)		(214)		(195)
Amortization of prior service cost (benefit), tax		64		76		69
Amortization of prior service cost (benefit), after-tax		(118)		(138)		(126)
Amortization of loss, pre-tax	[4]	78		57		76
Amortization of loss, tax		(27)		(20)		(27)
Amortization of loss, after-tax		51		37		49
Curtailment (gain) loss, pre-tax	[4]	(274)		0		(154)
Curtailment (gain) loss, tax		98		0		54
Curtailment (gain) loss, after-tax		(176)		0		(100)
Settlement loss, pre-tax	[4]	0		0		1
Settlement loss, tax		0		0		0
Settlement loss, after-tax		0		0		1
Benefit plans, net, pre-tax		(375)		(387)		452
Benefit plans, net, tax		135		155		(160)
Benefit plans, net, after-tax		(240)		(232)		292
Other income, net [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification of gain realized in net income, pre-tax		(2)		0		0
Reclassification of gain realized in net income, tax		0		0		0
Reclassification of gain realized in net income, after-tax		(2)		0		0
Foreign Currency Contract [Member] | Net sales [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Clearance of hedge results to earnings, pre-tax		(10)		(15)		(1)
Clearance of hedge results to earnings, tax		4		5		0
Clearance of hedge results to earnings, after-tax		(6)		(10)		(1)
Commodity Contract [Member] | Cost of goods sold [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Clearance of hedge results to earnings, pre-tax		22		30		(24)
Clearance of hedge results to earnings, tax		(9)		(11)		10
Clearance of hedge results to earnings, after-tax		$ 13		$ 19		$ (14)

[1] The increase in currency translation adjustment losses over prior year for the years ended December 31, 2015 and 2014, is driven by the strengthening USD against primarily the Euro and Brazilian Real. For the year ended December 31, 2015, the increase over prior year is also due to changes in certain foreign entity's functional currency as described in Note 1.

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

[3] The unrealized loss on securities during the year ended December 31, 2015 is due to the re-measurement of USD denominated marketable securities held by certain foreign entities at December 31, 2015 with a corresponding offset to cumulative translation adjustment.

[4] 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.