Goodwill and Other Intangible Assets (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019		Dec. 31, 2018
Goodwill and Other Intangible Assets [Abstract]
Goodwill	$ 812.4	[1]	$ 812.4	[2]
Finite-Lived Intangible Assets [Abstract]
Weighted average useful life	32 years
Gross carrying amount	$ 255.9		255.9
Accumulated amortization	$ 44.1		41.8
Tradenames [Member]
Finite-Lived Intangible Assets [Abstract]
Weighted average useful life	35 years
Gross carrying amount	$ 204.2		204.2
Accumulated amortization	$ 28.1		26.6
Technology [Member]
Finite-Lived Intangible Assets [Abstract]
Weighted average useful life	13 years
Gross carrying amount	$ 18.8		18.8
Accumulated amortization	$ 6.8		6.4
Patents [Member]
Finite-Lived Intangible Assets [Abstract]
Weighted average useful life	19 years
Gross carrying amount	$ 6.4		6.4
Accumulated amortization	$ 5.7		5.6
Customer Relationships [Member]
Finite-Lived Intangible Assets [Abstract]
Weighted average useful life	22 years
Gross carrying amount	$ 26.5		26.5
Accumulated amortization	$ 3.5		$ 3.2

[1] Unaudited

[2] Condensed from audited financial statements