Losses and Other Expenses, net (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Losses (Gains) and Other Expenses, net [Abstract]
Realized (gains) losses on settled futures contracts	$ (1.7)	$ 1.1	$ 1.9
Foreign currency exchange (gains) losses	(1.8)	2.2	3.6
Losses on disposal of fixed assets	0.2	0.5	0.6
Net change in unrealized losses (gains) on unsettled futures contracts	0.9	(3.6)	0.6
Asbestos-related litigation	3.5	6.3	3.0
Acquisition/disposition expenses	1.1	0.4	1.0
Special legal contingency charges	3.7	1.9	7.4
Environmental liabilities	2.2	1.9	1.0
Contractor tax payments	0.1	0.6	2.6
Losses and other expenses, net	$ 8.2	$ 11.3	$ 21.7