Restructuring Related Activities (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		13 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Dec. 31, 2016
Restructuring and Related Cost [Line Items]
Restructuring Charges Incurred to Date					$ 33
Restructuring-related Costs Incurred to Date					49
Estimated costs of restructuring program by major type of cost
Payments for Restructuring			$ (33)		(60)
Restructuring Related Expenses	$ 15	$ 12	30	$ 22
Restructuring and Related Cost, Incurred Cost	16	26	35	39
Restructuring Charges	1	14	5	17
2014 Restructuring plan [Member]
Estimated costs of restructuring program by major type of cost
Restructuring and Related Cost, Incurred Cost		19		19
2016 Restructuring Plan [Member]
Restructuring and Related Cost [Line Items]
Restructuring Charges Incurred to Date					33
Restructuring-related Costs Incurred to Date					49
Estimated costs of restructuring program by major type of cost
Restructuring and Related Cost, Cost Incurred to Date	82		82		82
Payments for Restructuring			(33)		(60)
Substantially Completed Restructuring Programs [Member]
Estimated costs of restructuring program by major type of cost
Restructuring and Related Cost, Incurred Cost		7		20
Termination Benefits [Member]
Estimated costs of restructuring program by major type of cost
Restructuring Related Expenses	0	0	0	0
Restructuring and Related Cost, Incurred Cost	0	14	3	15
Restructuring Charges	0	14	3	15
Termination Benefits [Member] | 2014 Restructuring plan [Member]
Estimated costs of restructuring program by major type of cost
Restructuring and Related Cost, Incurred Cost		18		18
Termination Benefits [Member] | 2016 Restructuring Plan [Member]
Restructuring and Related Cost [Line Items]
Restructuring Reserve	13		13		13	$ 16
Restructuring Charges Incurred to Date					27
Estimated costs of restructuring program by major type of cost
Payments for Restructuring			(6)		(14)
Restructuring Charges			3
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)		(3)
Accelerated depreciation [Member]
Estimated costs of restructuring program by major type of cost
Restructuring Related Expenses	2	3	3	4
Restructuring and Related Cost, Incurred Cost	2	3	3	4
Restructuring Charges	0	0	0	0
Accelerated depreciation [Member] | 2014 Restructuring plan [Member]
Estimated costs of restructuring program by major type of cost
Restructuring and Related Cost, Incurred Cost		0		0
Accelerated depreciation [Member] | 2016 Restructuring Plan [Member]
Restructuring and Related Cost [Line Items]
Restructuring-related Costs Incurred to Date					5
Accelerated depreciation [Member] | Substantially Completed Restructuring Programs [Member]
Estimated costs of restructuring program by major type of cost
Restructuring and Related Cost, Incurred Cost		3		4
Transfer costs [Member]
Estimated costs of restructuring program by major type of cost
Restructuring Related Expenses	12	7	24	12
Restructuring and Related Cost, Incurred Cost	12	7	24	12
Restructuring Charges	0	0	0	0
Transfer costs [Member] | 2014 Restructuring plan [Member]
Estimated costs of restructuring program by major type of cost
Restructuring and Related Cost, Incurred Cost		1		1
Transfer costs [Member] | 2016 Restructuring Plan [Member]
Restructuring and Related Cost [Line Items]
Restructuring-related Costs Incurred to Date					39
Estimated costs of restructuring program by major type of cost
Payments for Restructuring			(24)		(39)
Transfer costs [Member] | Substantially Completed Restructuring Programs [Member]
Estimated costs of restructuring program by major type of cost
Restructuring and Related Cost, Incurred Cost		6		11
Other [Member]
Restructuring and Related Cost [Line Items]
Restructuring Reserve	7		7		7	$ 6
Estimated costs of restructuring program by major type of cost
Restructuring Related Expenses	1	2	3	6
Restructuring and Related Cost, Incurred Cost	2	2	5	8
Restructuring Charges	1	0	2	2
Other [Member] | 2014 Restructuring plan [Member]
Estimated costs of restructuring program by major type of cost
Restructuring and Related Cost, Incurred Cost		0		0
Other [Member] | 2016 Restructuring Plan [Member]
Restructuring and Related Cost [Line Items]
Restructuring Charges Incurred to Date					6
Restructuring-related Costs Incurred to Date					5
Estimated costs of restructuring program by major type of cost
Payments for Restructuring			(3)		(7)
Other [Member] | Substantially Completed Restructuring Programs [Member]
Estimated costs of restructuring program by major type of cost
Restructuring and Related Cost, Incurred Cost		2		8
Minimum [Member] | 2016 Restructuring Plan [Member]
Restructuring and Related Cost [Line Items]
Restructuring and Related Cost, Expected Cost	175		175		175
Estimated costs of restructuring program by major type of cost
Restructuring plan estimated future cash outflow			160
Minimum [Member] | Restructuring Plan [Member] | Termination Benefits [Member] | 2016 Restructuring Plan [Member]
Restructuring and Related Cost [Line Items]
Restructuring and Related Cost, Expected Cost	60		60		60
Minimum [Member] | Restructuring Plan [Member] | Other [Member] | 2016 Restructuring Plan [Member]
Restructuring and Related Cost [Line Items]
Restructuring and Related Cost, Expected Cost	10		10		10
Minimum [Member] | Restructuring Related To Plan [Member] | Other [Member] | 2016 Restructuring Plan [Member]
Restructuring and Related Cost [Line Items]
Restructuring and Related Cost, Expected Cost	105		105		105
Maximum [Member] | 2016 Restructuring Plan [Member]
Restructuring and Related Cost [Line Items]
Restructuring and Related Cost, Expected Cost	225		225		225
Estimated costs of restructuring program by major type of cost
Restructuring plan estimated future cash outflow			210
Maximum [Member] | Restructuring Plan [Member] | Termination Benefits [Member] | 2016 Restructuring Plan [Member]
Restructuring and Related Cost [Line Items]
Restructuring and Related Cost, Expected Cost	70		70		70
Maximum [Member] | Restructuring Plan [Member] | Other [Member] | 2016 Restructuring Plan [Member]
Restructuring and Related Cost [Line Items]
Restructuring and Related Cost, Expected Cost	20		20		20
Maximum [Member] | Restructuring Related To Plan [Member] | Other [Member] | 2016 Restructuring Plan [Member]
Restructuring and Related Cost [Line Items]
Restructuring and Related Cost, Expected Cost	135		135		$ 135
Cost of Sales [Member]
Estimated costs of restructuring program by major type of cost
Restructuring Related Expenses	12	7	24	12
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	0
Cost of Sales [Member] | Transfer costs [Member]
Estimated costs of restructuring program by major type of cost
Restructuring Related Expenses	12	7	24	12
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	3	5	6	10
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	2	3	3	4
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	$ 1	$ 2	$ 3	$ 6