Goodwill and Intangibles - Intangibles (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 01, 2017	Oct. 02, 2016	Oct. 01, 2017	Oct. 02, 2016	Dec. 31, 2016
Intangible assets subject to amortization
Gross Carrying Amount	$ 335.0		$ 335.0		$ 332.6
Accumulated Amortization	(182.1)		(182.1)		(165.4)
Net Carrying Amount	152.9		152.9		167.2
Indefinite-lived intangible assets
Indefinite-lived intangible assets	37.1		37.1		35.3
Intangible assets
Gross Carrying Amount	372.1		372.1		367.9
Net Carrying Amount	190.0		190.0		202.5
Aggregate amortization expense for amortized intangible assets	5.7	$ 5.1	16.8	$ 15.3
Patents
Intangible assets subject to amortization
Gross Carrying Amount	16.1		16.1		16.1
Accumulated Amortization	(15.3)		(15.3)		(14.9)
Net Carrying Amount	0.8		0.8		1.2
Customer relationships
Intangible assets subject to amortization
Gross Carrying Amount	233.1		233.1		231.5
Accumulated Amortization	(129.4)		(129.4)		(117.3)
Net Carrying Amount	103.7		103.7		114.2
Technology
Intangible assets subject to amortization
Gross Carrying Amount	53.3		53.3		53.1
Accumulated Amortization	(22.1)		(22.1)		(19.2)
Net Carrying Amount	31.2		31.2		33.9
Trade name
Intangible assets subject to amortization
Gross Carrying Amount	25.7		25.7		25.1
Accumulated Amortization	(9.3)		(9.3)		(8.1)
Net Carrying Amount	16.4		16.4		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