Restructuring (Restructuring Activity) (Details) - November 2015 Restructuring Program [Member] - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Apr. 01, 2016
Restructuring Cost and Reserve [Line Items]
Total expected restructuring charges	$ 105.0
Restructuring Reserve [Roll Forward]
Balance, December 31, 2016	19.2
Net provisions	13.8	$ 6.8
Net benefits charged against the assets	(0.2)
Payments	(21.5)
Foreign currency translation	0.1
Balance, March 31, 2017	11.4
Total aggregate costs to date	88.2
Employee Separation Costs [Member]
Restructuring Cost and Reserve [Line Items]
Total expected restructuring charges	17.0
Restructuring Reserve [Roll Forward]
Balance, December 31, 2016	5.9
Net provisions	2.5	1.3
Net benefits charged against the assets	0.0
Payments	(3.8)
Foreign currency translation	0.0
Balance, March 31, 2017	4.6
Total aggregate costs to date	15.2
Asset-Related Costs [Member]
Restructuring Cost and Reserve [Line Items]
Total expected restructuring charges	25.0
Restructuring Reserve [Roll Forward]
Balance, December 31, 2016	0.0
Net provisions	0.0
Net benefits charged against the assets	0.0
Payments	0.0
Foreign currency translation	0.0
Balance, March 31, 2017	0.0
Total aggregate costs to date	21.3
Other Cost [Member]
Restructuring Cost and Reserve [Line Items]
Total expected restructuring charges	63.0
Restructuring Reserve [Roll Forward]
Balance, December 31, 2016	13.3
Net provisions	11.3	$ 5.4
Net benefits charged against the assets	(0.2)
Payments	(17.7)
Foreign currency translation	0.1
Balance, March 31, 2017	6.8
Total aggregate costs to date	$ 51.7