CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 82.3	$ 56.3	$ 247.8	$ 177.8
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	29.4	(23.8)	(4.9)	(20.1)
Defined benefit pension and other postretirement plan adjustments, net of tax of $0.1, $0.7, $1.2, and $0.7, respectively	(0.2)	2.4	(4.0)	2.2
Net (loss) gain on derivatives, net of tax of $0.2, $1.5, $0.4 and $0.7, respectively	(0.9)	3.2	(1.0)	1.7
Other comprehensive income (loss), net of tax	28.3	(18.2)	(9.9)	(16.2)
Comprehensive income	$ 110.6	$ 38.1	$ 237.9	$ 161.6