Accumulated Other Comprehensive Loss - Accumulated Other Comprehensive Loss Rollforward (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Accumulated Other Comprehensive Loss
Beginning balance	$ 1,614.0	$ 1,583.8	$ 1,625.2	$ 1,579.3
Other comprehensive loss	(32.1)	(11.8)	(69.2)	(24.1)
Amounts reclassified from accumulated other comprehensive income (loss), net of income taxes	0.1	0.3	0.3	1.0
Net current-period other comprehensive (loss) income, net of taxes	(32.0)	(11.5)	(68.9)	(23.1)
Ending balance	1,625.9	1,590.5	1,625.9	1,590.5
Accumulated other comprehensive income (loss)
Accumulated Other Comprehensive Loss
Beginning balance	(58.6)	(9.2)	(21.7)	2.4
Ending balance	(90.6)	(20.7)	(90.6)	(20.7)
Foreign currency translation adjustments
Accumulated Other Comprehensive Loss
Beginning balance	(52.3)	1.5	(15.2)	13.8
Other comprehensive loss	(32.1)	(11.8)	(69.2)	(24.1)
Amounts reclassified from accumulated other comprehensive income (loss), net of income taxes	0.0	0.0	0.0	0.0
Net current-period other comprehensive (loss) income, net of taxes	(32.1)	(11.8)	(69.2)	(24.1)
Ending balance	(84.4)	(10.3)	(84.4)	(10.3)
Pension liability adjustments, net of taxes
Accumulated Other Comprehensive Loss
Beginning balance	(6.3)	(10.7)	(6.5)	(11.4)
Other comprehensive loss	0.0	0.0	0.0	0.0
Amounts reclassified from accumulated other comprehensive income (loss), net of income taxes	0.1	0.3	0.3	1.0
Net current-period other comprehensive (loss) income, net of taxes	0.1	0.3	0.3	1.0
Ending balance	$ (6.2)	$ (10.4)	$ (6.2)	$ (10.4)