Other Expense (Income) - Other Expense (Income) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Restructuring and related charges:
Severance and post-employment benefits	$ 4.5	$ 0.6	$ 4.5	$ 2.2
Asset-related charges	0.0	0.1	0.0	0.1
Other charges	0.0	1.1	0.0	1.5
Total restructuring and related charges	4.5	1.8	4.5	3.8
Argentina currency devaluation	0.0	1.0	0.0	1.0
Fixed asset impairments	0.9	0.8	7.2	2.3
Development and licensing income	(0.2)	(0.2)	(0.6)	(0.6)
Contingent consideration	0.8	0.1	0.9	0.4
Foreign exchange transaction losses (gains)	1.0	5.1	(4.5)	(3.5)
Other items	(0.3)	(2.2)	(1.3)	(1.8)
Total other expense (income)	$ 6.7	6.4	$ 6.2	1.6
2018 Restructuring Plan
Restructuring and related charges:
Severance and post-employment benefits		0.6		2.2
Asset-related charges		0.1		0.1
Other charges		1.1		1.5
Total restructuring and related charges		$ 1.8		$ 3.8