Accumulated Other Comprehensive Loss - Accumulated Other Comprehensive Loss Rollforward (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Accumulated Other Comprehensive Loss
Beginning balance	$ 2,807.2	$ 1,614.0	$ 2,684.3	$ 1,625.2
Other comprehensive loss before reclassifications, net of taxes	(48.1)	(32.1)	(45.8)	(69.2)
Amounts reclassified from accumulated other comprehensive (loss) income , net of income taxes	0.2	0.1	0.5	0.3
Net current-period other comprehensive (loss) income, net of taxes	(47.9)	(32.0)	(45.3)	(68.9)
Ending balance	2,757.5	1,625.9	2,757.5	1,625.9
Accumulated other comprehensive loss
Accumulated Other Comprehensive Loss
Beginning balance	(55.4)	(58.6)	(58.0)	(21.7)
Ending balance	(103.3)	(90.6)	(103.3)	(90.6)
Foreign currency translation adjustments
Accumulated Other Comprehensive Loss
Beginning balance	(48.2)	(52.3)	(50.5)	(15.2)
Other comprehensive loss before reclassifications, net of taxes	(48.1)	(32.1)	(45.8)	(69.2)
Amounts reclassified from accumulated other comprehensive (loss) income , net of income taxes	0.0	0.0	0.0	0.0
Net current-period other comprehensive (loss) income, net of taxes	(48.1)	(32.1)	(45.8)	(69.2)
Ending balance	(96.3)	(84.4)	(96.3)	(84.4)
Pension liability adjustments, net of taxes
Accumulated Other Comprehensive Loss
Beginning balance	(7.2)	(6.3)	(7.5)	(6.5)
Other comprehensive loss before reclassifications, net of taxes	0.0	0.0	0.0	0.0
Amounts reclassified from accumulated other comprehensive (loss) income , net of income taxes	0.2	0.1	0.5	0.3
Net current-period other comprehensive (loss) income, net of taxes	0.2	0.1	0.5	0.3
Ending balance	$ (7.0)	$ (6.2)	$ (7.0)	$ (6.2)