Other (Income) Expense, net (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Other Income and Expenses [Abstract]
Defined benefit pension (income) expense other than service cost	$ (1.5)	$ (3.4)
Third-party acquisition-related costs	0.3	0.9
Currency transaction effects	(0.2)	(0.9)
Net (gain) loss on sales of investments and disposals of assets	0.5	0.4
Other miscellaneous (income) expense	(1.3)	(0.3)
Total other (income) expense, net	$ (2.2)	$ (3.3)