Goodwill and Intangibles - Intangibles (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Apr. 01, 2018	Dec. 31, 2018
Intangible assets subject to amortization
Gross Carrying Amount	$ 334.0		$ 334.0
Accumulated Amortization	(208.9)		(205.0)
Net Carrying Amount	125.1		129.0
Indefinite-lived intangible assets
Indefinite-lived intangible assets	35.9		36.2
Intangible assets
Gross Carrying Amount	369.9		370.2
Net Carrying Amount	161.0		165.2
Aggregate amortization expense for amortized intangible assets	3.9	$ 5.6
Patents
Intangible assets subject to amortization
Gross Carrying Amount	16.1		16.1
Accumulated Amortization	(15.8)		(15.8)
Net Carrying Amount	0.3		0.3
Customer relationships
Intangible assets subject to amortization
Gross Carrying Amount	232.9		232.9
Accumulated Amortization	(149.3)		(146.9)
Net Carrying Amount	83.6		86.0
Technology
Intangible assets subject to amortization
Gross Carrying Amount	54.6		54.6
Accumulated Amortization	(28.3)		(27.3)
Net Carrying Amount	26.3		27.3
Trade name
Intangible assets subject to amortization
Gross Carrying Amount	26.1		26.1
Accumulated Amortization	(11.9)		(11.5)
Net Carrying Amount	14.2		14.6
Other
Intangible assets subject to amortization
Gross Carrying Amount	4.3		4.3
Accumulated Amortization	(3.6)		(3.5)
Net Carrying Amount	$ 0.7		$ 0.8