Other Expense (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Other Income and Expenses [Abstract]
Severance and post-employment benefits	$ 0.1	$ 0.0	$ 3.4	$ 0.0
Asset-related charges	0.4	0.0	0.8	0.0
Other charges	0.7	0.0	2.5	0.0
Total restructuring and related charges	1.2	0.0	6.7	0.0
Argentina currency devaluation	1.1		1.1
Venezuela deconsolidation	0.0	0.0	0.0	11.1
Development and licensing income	(0.2)	(9.5)	(0.6)	(10.3)
Contingent consideration	0.2	(0.2)	0.8	0.5
Other items	(2.5)	0.2	(4.0)	1.8
Total other (income) expense	$ (0.2)	$ (9.5)	$ 4.0	$ 3.1