Restructuring Related Activities (Details) - USD ($) $ in Millions	3 Months Ended		29 Months Ended	56 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2016	Dec. 31, 2015
Estimated costs of restructuring program by major type of cost
Payments for Restructuring	$ (23)			$ (212)
Restructuring Related Expenses	10	$ 16
Restructuring and Related Cost, Incurred Cost	13	22
Restructuring Charges	3	6
2014 Restructuring plan [Member]
Restructuring and Related Cost [Line Items]
Restructuring Charges Incurred to Date			$ 128
Restructuring-related Costs Incurred to Date			114
Estimated costs of restructuring program by major type of cost
Restructuring and Related Cost, Cost Incurred to Date	242		242	242
Payments for Restructuring	(23)		(212)
Restructuring and Related Cost, Incurred Cost		25
Substantially Completed Restructuring Programs [Member]
Estimated costs of restructuring program by major type of cost
Restructuring and Related Cost, Incurred Cost		(3)
Termination Benefits [Member]
Estimated costs of restructuring program by major type of cost
Restructuring Related Expenses	0	0
Restructuring and Related Cost, Incurred Cost	1	5
Restructuring Charges	1	5
Termination Benefits [Member] | 2014 Restructuring plan [Member]
Restructuring and Related Cost [Line Items]
Restructuring Reserve	16		16	16	$ 29
Restructuring Charges Incurred to Date			97
Estimated costs of restructuring program by major type of cost
Payments for Restructuring	(14)		(83)
Restructuring and Related Cost, Incurred Cost		8
Restructuring Charges	1
Termination Benefits [Member] | Substantially Completed Restructuring Programs [Member]
Estimated costs of restructuring program by major type of cost
Restructuring and Related Cost, Incurred Cost		(3)
Accelerated depreciation [Member]
Estimated costs of restructuring program by major type of cost
Restructuring Related Expenses	1	1
Restructuring and Related Cost, Incurred Cost	1	1
Restructuring Charges	0	0
Accelerated depreciation [Member] | 2014 Restructuring plan [Member]
Restructuring and Related Cost [Line Items]
Restructuring-related Costs Incurred to Date			9
Estimated costs of restructuring program by major type of cost
Restructuring and Related Cost, Incurred Cost		1
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]
Estimated costs of restructuring program by major type of cost
Restructuring Related Expenses	5	8
Restructuring and Related Cost, Incurred Cost	5	8
Restructuring Charges	0	0
Transfer costs [Member] | 2014 Restructuring plan [Member]
Restructuring and Related Cost [Line Items]
Restructuring-related Costs Incurred to Date			60
Estimated costs of restructuring program by major type of cost
Payments for Restructuring	(5)		(60)
Restructuring and Related Cost, Incurred Cost		8
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] | 2014 Restructuring plan [Member]
Restructuring and Related Cost [Line Items]
Restructuring Charges Incurred to Date			0
Other [Member]
Restructuring and Related Cost [Line Items]
Restructuring Reserve	4		4	4	$ 3
Estimated costs of restructuring program by major type of cost
Restructuring Related Expenses	4	7
Restructuring and Related Cost, Incurred Cost	6	8
Restructuring Charges	2	1
Other [Member] | 2014 Restructuring plan [Member]
Restructuring and Related Cost [Line Items]
Restructuring Charges Incurred to Date			31
Restructuring-related Costs Incurred to Date			45
Estimated costs of restructuring program by major type of cost
Payments for Restructuring	(4)		(69)
Restructuring and Related Cost, Incurred Cost		8
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
Restructuring plan estimated future cash outflow	240
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	95		95	95
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
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	130		130	130
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
Restructuring plan estimated future cash outflow	255
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	100		100	100
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
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	135		$ 135	$ 135
Cost of products sold [Member]
Estimated costs of restructuring program by major type of cost
Restructuring Related Expenses	5	8
Cost of products sold [Member] | Termination Benefits [Member]
Estimated costs of restructuring program by major type of cost
Restructuring Related Expenses	0	0
Cost of products sold [Member] | Accelerated depreciation [Member]
Estimated costs of restructuring program by major type of cost
Restructuring Related Expenses	0	0
Cost of products sold [Member] | Transfer costs [Member]
Estimated costs of restructuring program by major type of cost
Restructuring Related Expenses	5	8
Cost of products sold [Member] | Other [Member]
Estimated costs of restructuring program by major type of cost
Restructuring Related Expenses	0	0
Selling, General and Administrative Expenses [Member]
Estimated costs of restructuring program by major type of cost
Restructuring Related Expenses	5	8
Selling, General and Administrative Expenses [Member] | Termination Benefits [Member]
Estimated costs of restructuring program by major type of cost
Restructuring Related Expenses	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	1
Selling, General and Administrative Expenses [Member] | Transfer costs [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	$ 7