Accumulated Other Comprehensive Loss - Accumulated Other Comprehensive Loss Rollforward (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Accumulated Other Comprehensive Loss
Beginning balance	$ 2,684.3	$ 1,625.2
Other comprehensive income (loss)	4.0	(6.1)
Amounts reclassified from accumulated other comprehensive loss, net of income taxes	0.1	0.1
Net current-period other comprehensive income, net of taxes	4.1	(6.0)
Ending balance	2,706.9	1,629.4
Accumulated other comprehensive loss
Accumulated Other Comprehensive Loss
Beginning balance	(58.0)	(21.7)
Ending balance	(53.9)	(27.7)
Foreign currency translation adjustments
Accumulated Other Comprehensive Loss
Beginning balance	(50.5)	(15.2)
Other comprehensive income (loss)	4.0	(6.1)
Amounts reclassified from accumulated other comprehensive loss, net of income taxes	0.0	0.0
Net current-period other comprehensive income, net of taxes	4.0	(6.1)
Ending balance	(46.5)	(21.3)
Pension liability adjustments, net of taxes
Accumulated Other Comprehensive Loss
Beginning balance	(7.5)	(6.5)
Other comprehensive income (loss)	0.0	0.0
Amounts reclassified from accumulated other comprehensive loss, net of income taxes	0.1	0.1
Net current-period other comprehensive income, net of taxes	0.1	0.1
Ending balance	$ (7.4)	$ (6.4)