Restructuring and Other (Components of Outstanding Restructuring Reserve and Movements) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Restructuring Reserve [Roll Forward]
Provision	$ 7	$ 20	$ 10	$ 21
2015 European Division Actions [Member]
Restructuring Reserve [Roll Forward]
Balance at beginning of period			17
Payments			(3)
Foreign currency translation			(1)
Balance at end of period	13		13
Termination Benefits [Member] | 2015 European Division Actions [Member]
Restructuring Reserve [Roll Forward]
Balance at beginning of period			17
Payments			(3)
Foreign currency translation			(1)
Balance at end of period	13		13
Other Exit Costs [Member] | 2015 European Division Actions [Member]
Restructuring Reserve [Roll Forward]
Balance at beginning of period			0
Payments			0
Foreign currency translation			0
Balance at end of period	$ 0		$ 0