Other Expense (Income) - Other Expense (Income) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Other Income and Expenses [Abstract]
Restructuring and related charges	$ 1.0	$ 0.0	$ 2.2	$ 0.0
Fixed asset impairments and loss (gain) on sale of equipment	0.2	6.3	0.3	6.5
Contingent consideration	0.2	0.1	0.9	0.1
Foreign exchange transaction gains	(2.6)	(2.0)	(2.9)	(5.5)
Other items	(1.5)	(1.4)	0.7	(1.6)
Total other expense (income)	$ (2.7)	$ 3.0	$ 1.2	$ (0.5)