Leases - Schedule of Components of Lease Cost for Operating Leases (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Operating leases:
Lease cost	$ 13.2	$ 13.3	$ 26.3	$ 26.6
Variable lease cost	1.1	1.1	2.2	2.1
Short-term lease cost	0.2	0.4	0.5	0.5
Operating lease cost	14.5	14.8	29.0	29.2
Sublease income	(0.3)	(0.4)	(0.8)	(0.7)
Total lease cost net	$ 14.2	$ 14.4	$ 28.2	$ 28.5