Restructuring Related Activities (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended		6 Months Ended		32 Months Ended	59 Months Ended
	Jun. 30, 2016	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2016	Dec. 31, 2015
Restructuring and Related Cost [Line Items]
Restructuring Charges Incurred to Date						$ 142
Restructuring-related Costs Incurred to Date						126
Estimated costs of restructuring program by major type of cost
Restructuring and Related Cost, Cost Incurred to Date	$ 268	$ 268		$ 268		268	$ 268
Payments for Restructuring		(17)		(40)		(229)
Restructuring Related Expenses		12	$ 12	22	$ 28
Restructuring and Related Cost, Incurred Cost		(26)	(15)	(39)	(37)
Restructuring Charges		14	3	17	9
2014 Restructuring plan [Member]
Restructuring and Related Cost [Line Items]
Restructuring Charges Incurred to Date						124
Restructuring-related Costs Incurred to Date						125
Estimated costs of restructuring program by major type of cost
Restructuring and Related Cost, Cost Incurred to Date	249	249		249		249	249
Payments for Restructuring		(12)		(35)		(224)
Restructuring and Related Cost, Incurred Cost		7		20	(40)
2016 Restructuring Plan [Member]
Restructuring and Related Cost [Line Items]
Restructuring Charges Incurred to Date	18
Restructuring-related Costs Incurred to Date	1
Estimated costs of restructuring program by major type of cost
Restructuring and Related Cost, Cost Incurred to Date	19	19		19		19	19
Payments for Restructuring	(5)	(5)		(5)
Restructuring and Related Cost, Incurred Cost		(19)		(19)
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]
Restructuring and Related Cost [Line Items]
Restructuring Reserve	23	23		23		23	23	$ 29
Restructuring Charges Incurred to Date							111
Estimated costs of restructuring program by major type of cost
Payments for Restructuring		(7)		(21)		(90)
Restructuring Related Expenses		0	0	0	0
Restructuring and Related Cost, Incurred Cost		(14)	(3)	(15)	(8)
Restructuring Charges		14	3	15	8
Termination Benefits [Member] | 2014 Restructuring plan [Member]
Restructuring and Related Cost [Line Items]
Restructuring Reserve	9	9		9		9	9	29
Restructuring Charges Incurred to Date						93
Estimated costs of restructuring program by major type of cost
Payments for Restructuring		(3)		(17)		(86)
Restructuring and Related Cost, Incurred Cost		4		3	(11)
Restructuring Charges				(3)
Termination Benefits [Member] | 2016 Restructuring Plan [Member]
Restructuring and Related Cost [Line Items]
Restructuring Reserve	14	14		14		14	14	0
Restructuring Charges Incurred to Date	18
Estimated costs of restructuring program by major type of cost
Payments for Restructuring	(4)	(4)		(4)
Restructuring and Related Cost, Incurred Cost		(18)		(18)
Restructuring Charges				18
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]
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		3	1	4	2
Restructuring and Related Cost, Incurred Cost		(3)	(1)	(4)	(2)
Restructuring Charges		0	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		(3)		(4)	(2)
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		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							67
Estimated costs of restructuring program by major type of cost
Payments for Restructuring		(7)		(12)		(67)
Restructuring Related Expenses		7	8	12	16
Restructuring and Related Cost, Incurred Cost		(7)	(8)	(12)	(16)
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						66
Estimated costs of restructuring program by major type of cost
Payments for Restructuring		(6)		(11)		(66)
Restructuring and Related Cost, Incurred Cost		(6)		(11)	(16)
Transfer costs [Member] | 2016 Restructuring Plan [Member]
Restructuring and Related Cost [Line Items]
Restructuring-related Costs Incurred to Date	1
Estimated costs of restructuring program by major type of cost
Payments for Restructuring	(1)	(1)		(1)
Restructuring and Related Cost, Incurred Cost		(1)		(1)
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
Other [Member]
Restructuring and Related Cost [Line Items]
Restructuring Reserve	4	4		4		4	4	$ 3
Restructuring Charges Incurred to Date							31
Restructuring-related Costs Incurred to Date							47
Estimated costs of restructuring program by major type of cost
Payments for Restructuring		(3)		(7)		(72)
Restructuring Related Expenses		2	3	6	10
Restructuring and Related Cost, Incurred Cost		(2)	(3)	(8)	(11)
Restructuring Charges		0	0	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						47
Estimated costs of restructuring program by major type of cost
Payments for Restructuring		(3)		(7)		(72)
Restructuring and Related Cost, Incurred Cost		(2)		(8)	(11)
Other [Member] | 2016 Restructuring Plan [Member]
Restructuring and Related Cost [Line Items]
Restructuring Charges Incurred to Date	0
Restructuring-related Costs Incurred to Date	0
Estimated costs of restructuring program by major type of cost
Payments for Restructuring	0	0		0
Restructuring and Related Cost, Incurred Cost		0		0
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	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	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	95	95		95		95	95
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	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	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	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	130	130		130		130	130
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	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	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	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	100	100		100		100	100
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	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	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	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	135	135		135		135	135
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	$ 120
Cost of products sold [Member]
Estimated costs of restructuring program by major type of cost
Restructuring Related Expenses		7	8	12	16
Cost of products sold [Member] | Termination Benefits [Member]
Estimated costs of restructuring program by major type of cost
Restructuring Related Expenses		0	0	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	0	0
Cost of products sold [Member] | Transfer costs [Member]
Estimated costs of restructuring program by major type of cost
Restructuring Related Expenses		7	8	12	16
Cost of products sold [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		5	4	10	12
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		3	1	4	2
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] | Other [Member]
Estimated costs of restructuring program by major type of cost
Restructuring Related Expenses		$ 2	$ 3	$ 6	$ 10