CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement of Comprehensive Income [Abstract]
Net (Loss) Income	$ (35.1)	$ 19.3	$ (4.8)	$ 20.0
Other Comprehensive (Loss) Income, net of tax
Unrealized currency translation adjustments	(3.7)	4.9	(5.6)	(5.2)
Defined benefit plans	0.1	0.0	0.1	0.2
Cash flow hedges	0.0	0.0	0.0	(0.1)
Total Other Comprehensive (Loss) Income, net of tax	(3.6)	4.9	(5.5)	(5.1)
Comprehensive (Loss) Income	$ (38.7)	$ 24.2	$ (10.3)	$ 14.9