CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 56.3	$ 55.2	$ 177.8	$ 154.9
Other comprehensive (loss) income, net of tax:
Foreign currency translation adjustments	(23.8)	(9.5)	(20.1)	(39.1)
Defined benefit pension and other postretirement plan adjustments, net of tax of $0.7, $0, $0.7 and $0.1, respectively	2.4	(0.2)	2.2	0.1
Net gain (loss) on derivatives, net of tax of $1.5, $(0.1), $0.7, and $1.0, respectively	3.2	(0.4)	1.7	2.5
Other comprehensive loss, net of tax	(18.2)	(10.1)	(16.2)	(36.5)
Comprehensive income	$ 38.1	$ 45.1	$ 161.6	$ 118.4