Restructuring Related Activities (Details) - USD ($) $ in Millions	3 Months Ended		4 Months Ended	9 Months Ended		35 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Dec. 31, 2015
Restructuring and Related Cost [Line Items]
Restructuring Charges Incurred to Date						$ 147
Restructuring-related Costs Incurred to Date						138
Estimated costs of restructuring program by major type of cost
Restructuring and Related Cost, Cost Incurred to Date	$ 285		$ 285	$ 285		285
Payments for Restructuring	(17)			(57)		(246)
Restructuring Related Expenses	12	$ 14		33	$ 42
Restructuring and Related Cost, Incurred Cost	17	21		55	58
Restructuring Charges	5	7		22	16
2014 Restructuring plan [Member]
Restructuring and Related Cost [Line Items]
Restructuring Charges Incurred to Date						127
Restructuring-related Costs Incurred to Date						132
Estimated costs of restructuring program by major type of cost
Restructuring and Related Cost, Cost Incurred to Date	259		259	259		259
Payments for Restructuring	(11)			(46)		(235)
Restructuring and Related Cost, Incurred Cost	10			30	62
2016 Restructuring Plan [Member]
Restructuring and Related Cost [Line Items]
Restructuring Charges Incurred to Date			20
Restructuring-related Costs Incurred to Date			6
Estimated costs of restructuring program by major type of cost
Restructuring and Related Cost, Cost Incurred to Date	26		26	26		26
Payments for Restructuring	(6)		(11)	(11)
Restructuring and Related Cost, Incurred Cost	7			25
Substantially Completed Restructuring Programs [Member]
Estimated costs of restructuring program by major type of cost
Restructuring and Related Cost, Incurred Cost					(4)
Termination Benefits [Member]
Restructuring and Related Cost [Line Items]
Restructuring Reserve	19		19	19		19	$ 29
Restructuring Charges Incurred to Date						112
Estimated costs of restructuring program by major type of cost
Payments for Restructuring	(5)			(26)		(95)
Restructuring Related Expenses	0	0		0	0
Restructuring and Related Cost, Incurred Cost	1	5		16	13
Restructuring Charges	1	5		16	13
Termination Benefits [Member] | 2014 Restructuring plan [Member]
Restructuring and Related Cost [Line Items]
Restructuring Reserve	6		6	6		6	29
Restructuring Charges Incurred to Date						93
Estimated costs of restructuring program by major type of cost
Payments for Restructuring	(3)			(20)		(89)
Restructuring and Related Cost, Incurred Cost	0			(3)	17
Restructuring Charges				(3)
Termination Benefits [Member] | 2016 Restructuring Plan [Member]
Restructuring and Related Cost [Line Items]
Restructuring Reserve	13		13	13		13	0
Restructuring Charges Incurred to Date			19
Estimated costs of restructuring program by major type of cost
Payments for Restructuring	(2)		(6)	(6)
Restructuring and Related Cost, Incurred Cost	1			19
Restructuring Charges				19
Termination Benefits [Member] | Substantially Completed Restructuring Programs [Member]
Estimated costs of restructuring program by major type of cost
Restructuring and Related Cost, Incurred Cost					(4)
Accelerated depreciation [Member]
Restructuring and Related Cost [Line Items]
Restructuring-related Costs Incurred to Date						12
Estimated costs of restructuring program by major type of cost
Restructuring Related Expenses		1		4	3
Restructuring and Related Cost, Incurred Cost		1		4	3
Restructuring Charges		0		0	0
Accelerated depreciation [Member] | 2014 Restructuring plan [Member]
Restructuring and Related Cost [Line Items]
Restructuring-related Costs Incurred to Date						12
Estimated costs of restructuring program by major type of cost
Restructuring and Related Cost, Incurred Cost				4	3
Accelerated depreciation [Member] | 2016 Restructuring Plan [Member]
Restructuring and Related Cost [Line Items]
Restructuring-related Costs Incurred to Date			0
Estimated costs of restructuring program by major type of cost
Restructuring and Related Cost, Incurred Cost				0
Accelerated depreciation [Member] | Substantially Completed Restructuring Programs [Member]
Estimated costs of restructuring program by major type of cost
Restructuring and Related Cost, Incurred Cost					0
Transfer costs [Member]
Restructuring and Related Cost [Line Items]
Restructuring-related Costs Incurred to Date						75
Estimated costs of restructuring program by major type of cost
Payments for Restructuring	(8)			(20)		(75)
Restructuring Related Expenses	8	5		20	20
Restructuring and Related Cost, Incurred Cost	8	5		20	20
Restructuring Charges	0	0		0	0
Transfer costs [Member] | 2014 Restructuring plan [Member]
Restructuring and Related Cost [Line Items]
Restructuring-related Costs Incurred to Date						71
Estimated costs of restructuring program by major type of cost
Payments for Restructuring	(5)			(16)		(71)
Restructuring and Related Cost, Incurred Cost	5			16	20
Transfer costs [Member] | 2016 Restructuring Plan [Member]
Restructuring and Related Cost [Line Items]
Restructuring-related Costs Incurred to Date			4
Estimated costs of restructuring program by major type of cost
Payments for Restructuring	(3)		(4)	(4)
Restructuring and Related Cost, Incurred Cost	3			4
Transfer costs [Member] | Substantially Completed Restructuring Programs [Member]
Estimated costs of restructuring program by major type of cost
Restructuring and Related Cost, Incurred Cost					0
Impairment of an asset in value [Member]
Restructuring and Related Cost [Line Items]
Restructuring Charges Incurred to Date						2
Estimated costs of restructuring program by major type of cost
Restructuring Related Expenses	0			0
Restructuring and Related Cost, Incurred Cost	2			2
Restructuring Charges	2			2
Impairment of an asset in value [Member] | 2014 Restructuring plan [Member]
Restructuring and Related Cost [Line Items]
Restructuring Charges Incurred to Date						2
Estimated costs of restructuring program by major type of cost
Restructuring and Related Cost, Incurred Cost	2			2
Impairment of an asset in value [Member] | 2016 Restructuring Plan [Member]
Restructuring and Related Cost [Line Items]
Restructuring Charges Incurred to Date			0
Estimated costs of restructuring program by major type of cost
Restructuring and Related Cost, Incurred Cost	0			0
Other [Member]
Restructuring and Related Cost [Line Items]
Restructuring Reserve	5		5	5		5	$ 3
Restructuring Charges Incurred to Date						33
Restructuring-related Costs Incurred to Date						51
Estimated costs of restructuring program by major type of cost
Payments for Restructuring	(4)			(11)		(76)
Restructuring Related Expenses	4	8		9	19
Restructuring and Related Cost, Incurred Cost	6	10		13	22
Restructuring Charges	2	2		4	3
Other [Member] | 2014 Restructuring plan [Member]
Restructuring and Related Cost [Line Items]
Restructuring Charges Incurred to Date						32
Restructuring-related Costs Incurred to Date						49
Estimated costs of restructuring program by major type of cost
Payments for Restructuring	(3)			(10)		(75)
Restructuring and Related Cost, Incurred Cost	3			11	22
Other [Member] | 2016 Restructuring Plan [Member]
Restructuring and Related Cost [Line Items]
Restructuring Charges Incurred to Date			1
Restructuring-related Costs Incurred to Date			2
Estimated costs of restructuring program by major type of cost
Payments for Restructuring	(1)		(1)	(1)
Restructuring and Related Cost, Incurred Cost	3			2
Other [Member] | Substantially Completed Restructuring Programs [Member]
Estimated costs of restructuring program by major type of cost
Restructuring and Related Cost, Incurred Cost					0
Minimum [Member] | 2014 Restructuring plan [Member]
Estimated costs of restructuring program by major type of cost
Expected total costs associated with the plan	255		255	255		255
Restructuring plan estimated future cash outflow	240
Minimum [Member] | 2016 Restructuring Plan [Member]
Estimated costs of restructuring program by major type of cost
Expected total costs associated with the plan	175		175	175		175
Restructuring plan estimated future cash outflow	160
Minimum [Member] | Restructuring Plan [Member] | Termination Benefits [Member] | 2014 Restructuring plan [Member]
Estimated costs of restructuring program by major type of cost
Expected total costs associated with the plan	90		90	90		90
Minimum [Member] | Restructuring Plan [Member] | Termination Benefits [Member] | 2016 Restructuring Plan [Member]
Estimated costs of restructuring program by major type of cost
Expected total costs associated with the plan	65		65	65		65
Minimum [Member] | Restructuring Plan [Member] | Other [Member] | 2014 Restructuring plan [Member]
Estimated costs of restructuring program by major type of cost
Expected total costs associated with the plan	30		30	30		30
Minimum [Member] | Restructuring Plan [Member] | Other [Member] | 2016 Restructuring Plan [Member]
Estimated costs of restructuring program by major type of cost
Expected total costs associated with the plan	15		15	15		15
Minimum [Member] | Restructuring Related To Plan [Member] | Other [Member] | 2014 Restructuring plan [Member]
Estimated costs of restructuring program by major type of cost
Expected total costs associated with the plan	135		135	135		135
Minimum [Member] | Restructuring Related To Plan [Member] | Other [Member] | 2016 Restructuring Plan [Member]
Estimated costs of restructuring program by major type of cost
Expected total costs associated with the plan	95		95	95		95
Maximum [Member] | 2014 Restructuring plan [Member]
Estimated costs of restructuring program by major type of cost
Expected total costs associated with the plan	270		270	270		270
Restructuring plan estimated future cash outflow	255
Maximum [Member] | 2016 Restructuring Plan [Member]
Estimated costs of restructuring program by major type of cost
Expected total costs associated with the plan	225		225	225		225
Restructuring plan estimated future cash outflow	210
Maximum [Member] | Restructuring Plan [Member] | Termination Benefits [Member] | 2014 Restructuring plan [Member]
Estimated costs of restructuring program by major type of cost
Expected total costs associated with the plan	95		95	95		95
Maximum [Member] | Restructuring Plan [Member] | Termination Benefits [Member] | 2016 Restructuring Plan [Member]
Estimated costs of restructuring program by major type of cost
Expected total costs associated with the plan	80		80	80		80
Maximum [Member] | Restructuring Plan [Member] | Other [Member] | 2014 Restructuring plan [Member]
Estimated costs of restructuring program by major type of cost
Expected total costs associated with the plan	35		35	35		35
Maximum [Member] | Restructuring Plan [Member] | Other [Member] | 2016 Restructuring Plan [Member]
Estimated costs of restructuring program by major type of cost
Expected total costs associated with the plan	25		25	25		25
Maximum [Member] | Restructuring Related To Plan [Member] | Other [Member] | 2014 Restructuring plan [Member]
Estimated costs of restructuring program by major type of cost
Expected total costs associated with the plan	140		140	140		140
Maximum [Member] | Restructuring Related To Plan [Member] | Other [Member] | 2016 Restructuring Plan [Member]
Estimated costs of restructuring program by major type of cost
Expected total costs associated with the plan	120		$ 120	120		$ 120
Cost of Sales [Member]
Estimated costs of restructuring program by major type of cost
Restructuring Related Expenses	8	5		20	20
Cost of Sales [Member] | Termination Benefits [Member]
Estimated costs of restructuring program by major type of cost
Restructuring Related Expenses	0	0		0	0
Cost of Sales [Member] | Accelerated depreciation [Member]
Estimated costs of restructuring program by major type of cost
Restructuring Related Expenses		0		0	0
Cost of Sales [Member] | Transfer costs [Member]
Estimated costs of restructuring program by major type of cost
Restructuring Related Expenses	8	5		20	20
Cost of Sales [Member] | Impairment of an asset in value [Member]
Estimated costs of restructuring program by major type of cost
Restructuring Related Expenses	0			0
Cost of Sales [Member] | Other [Member]
Estimated costs of restructuring program by major type of cost
Restructuring Related Expenses	0	0		0	0
Selling, General and Administrative Expenses [Member]
Estimated costs of restructuring program by major type of cost
Restructuring Related Expenses	4	9		13	22
Selling, General and Administrative Expenses [Member] | Termination Benefits [Member]
Estimated costs of restructuring program by major type of cost
Restructuring Related Expenses	0	0		0	0
Selling, General and Administrative Expenses [Member] | Accelerated depreciation [Member]
Estimated costs of restructuring program by major type of cost
Restructuring Related Expenses		1		4	3
Selling, General and Administrative Expenses [Member] | Transfer costs [Member]
Estimated costs of restructuring program by major type of cost
Restructuring Related Expenses	0	0		0	0
Selling, General and Administrative Expenses [Member] | Impairment of an asset in value [Member]
Estimated costs of restructuring program by major type of cost
Restructuring Related Expenses	0			0
Selling, General and Administrative Expenses [Member] | Other [Member]
Estimated costs of restructuring program by major type of cost
Restructuring Related Expenses	$ 4	$ 8		$ 9	$ 19