Other Comprehensive (Loss) Income - Components of OCI (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive (loss) income, pre-tax amount	$ (33.1)	$ 3.2
Other comprehensive (loss) income, tax	(0.4)	0.0
Total other comprehensive (loss) income	(33.5)	3.2
Defined benefit pension and other postretirement plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive (loss) income, pre-tax amount	0.1
Other comprehensive (loss) income, tax	0.0
Total other comprehensive (loss) income	0.1	0.0
Currency translation adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive (loss) income, pre-tax amount	(33.4)	3.3
Other comprehensive (loss) income, tax	(0.4)	0.0
Total other comprehensive (loss) income	(33.8)	3.3
Gain from hedging activities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive (loss) income, pre-tax amount	0.2	(0.1)
Other comprehensive (loss) income, tax	0.0	0.0
Total other comprehensive (loss) income	$ 0.2	$ (0.1)