Restructuring (Restructuring Activity) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Oct. 02, 2015	Sep. 30, 2016	Oct. 02, 2015
November 2015 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Total expected restructuring charges	$ 60.0		$ 60.0
Restructuring Reserve [Roll Forward]
Balance, December 31, 2015			4.5
Net provisions	23.4		39.8
Net benefits charged against the assets			(14.6)
Payments			(21.7)
Foreign currency translation			0.1
Balance, September 30, 2016	8.1		8.1
Total aggregate costs to date			48.4
November 2015 Restructuring Program [Member] | Employee Separation Costs [Member]
Restructuring Cost and Reserve [Line Items]
Total expected restructuring charges	8.0		8.0
Restructuring Reserve [Roll Forward]
Balance, December 31, 2015			1.3
Net provisions	3.3		5.7
Net benefits charged against the assets			0.0
Payments			(2.9)
Foreign currency translation			0.0
Balance, September 30, 2016	4.1		4.1
Total aggregate costs to date			7.9
November 2015 Restructuring Program [Member] | Asset-Related Costs [Member]
Restructuring Cost and Reserve [Line Items]
Total expected restructuring charges	17.0		17.0
Restructuring Reserve [Roll Forward]
Balance, December 31, 2015			0.0
Net provisions	12.9		14.3
Net benefits charged against the assets			(14.3)
Payments			0.0
Foreign currency translation			0.0
Balance, September 30, 2016	0.0		0.0
Total aggregate costs to date			16.2
November 2015 Restructuring Program [Member] | Other Cost [Member]
Restructuring Cost and Reserve [Line Items]
Total expected restructuring charges	35.0		35.0
Restructuring Reserve [Roll Forward]
Balance, December 31, 2015			3.2
Net provisions	7.2		19.8
Net benefits charged against the assets			(0.3)
Payments			(18.8)
Foreign currency translation			0.1
Balance, September 30, 2016	4.0		4.0
Total aggregate costs to date			24.3
July 2014 Restructuring Program [Member]
Restructuring Reserve [Roll Forward]
Balance, December 31, 2015			10.7
Net provisions	0.8	$ 3.6	10.6	$ 38.3
Net benefits charged against the assets			(1.2)
Payments			(14.4)
Foreign currency translation			0.2
Balance, September 30, 2016	5.9		5.9
Total aggregate costs to date			218.6
July 2014 Restructuring Program [Member] | Employee Separation Costs [Member]
Restructuring Reserve [Roll Forward]
Balance, December 31, 2015			7.7
Net provisions	(0.1)	0.1	1.3	12.3
Net benefits charged against the assets			0.0
Payments			(8.9)
Foreign currency translation			0.2
Balance, September 30, 2016	0.3		0.3
Total aggregate costs to date			52.2
July 2014 Restructuring Program [Member] | Asset-Related Costs [Member]
Restructuring Reserve [Roll Forward]
Balance, December 31, 2015			0.0
Net provisions	0.1	0.8	1.8	14.8
Net benefits charged against the assets			(1.8)
Payments			0.0
Foreign currency translation			0.0
Balance, September 30, 2016	0.0		0.0
Total aggregate costs to date			135.1
July 2014 Restructuring Program [Member] | Other Cost [Member]
Restructuring Reserve [Roll Forward]
Balance, December 31, 2015			3.0
Net provisions	0.8	$ 2.7	7.5	$ 11.2
Net benefits charged against the assets			0.6
Payments			(5.5)
Foreign currency translation			0.0
Balance, September 30, 2016	$ 5.6		5.6
Total aggregate costs to date			$ 31.3