Restructuring of Operations - Accrued Restructuring Costs and Activity (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Restructuring Reserve [Roll Forward]
Beginning balance	$ 17	$ 21	$ 25
Charges to restructuring	38	15	23
Adjustments of accruals	(2)		(2)
Cash payments	(15)	(16)	(26)
Currency impact		(3)	1
Ending Balance	38	17	21
Employee Termination Benefits [Member]
Restructuring Reserve [Roll Forward]
Beginning balance	9	12	14
Charges to restructuring	35	12	17
Adjustments of accruals	(2)		(2)
Cash payments	(10)	(12)	(18)
Currency impact		(3)	1
Ending Balance	32	9	12
Exit Costs [Member]
Restructuring Reserve [Roll Forward]
Beginning balance	8	9	11
Charges to restructuring	3	3	6
Adjustments of accruals
Cash payments	(5)	(4)	(8)
Ending Balance	$ 6	$ 8	$ 9