Goodwill and Intangibles - Intangibles (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 02, 2017	Jul. 03, 2016	Jul. 02, 2017	Jul. 03, 2016	Dec. 31, 2016
Intangible assets subject to amortization
Gross Carrying Amount	$ 334.5		$ 334.5		$ 332.6
Accumulated Amortization	(176.4)		(176.4)		(165.4)
Net Carrying Amount	158.1		158.1		167.2
Indefinite-lived intangible assets
Indefinite-lived intangible assets	36.5		36.5		35.3
Intangible assets
Gross Carrying Amount	371.0		371.0		367.9
Net Carrying Amount	194.6		194.6		202.5
Aggregate amortization expense for amortized intangible assets	5.6	$ 5.1	11.1	$ 10.2
Patents
Intangible assets subject to amortization
Gross Carrying Amount	16.1		16.1		16.1
Accumulated Amortization	(15.0)		(15.0)		(14.9)
Net Carrying Amount	1.1		1.1		1.2
Customer relationships
Intangible assets subject to amortization
Gross Carrying Amount	233.0		233.0		231.5
Accumulated Amortization	(125.3)		(125.3)		(117.3)
Net Carrying Amount	107.7		107.7		114.2
Technology
Intangible assets subject to amortization
Gross Carrying Amount	53.2		53.2		53.1
Accumulated Amortization	(21.2)		(21.2)		(19.2)
Net Carrying Amount	32.0		32.0		33.9
Trade name
Intangible assets subject to amortization
Gross Carrying Amount	25.4		25.4		25.1
Accumulated Amortization	(8.9)		(8.9)		(8.1)
Net Carrying Amount	16.5		16.5		17.0
Other
Intangible assets subject to amortization
Gross Carrying Amount	6.8		6.8		6.8
Accumulated Amortization	(6.0)		(6.0)		(5.9)
Net Carrying Amount	$ 0.8		$ 0.8		$ 0.9