Leases - Summary of Components of Lease Expense (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Leases [Abstract]
Operating lease expense	$ 4.5	$ 4.9
Sublease income	(1.1)	(1.1)
Net operating lease expense	3.4	3.8
Amortization of ROU asset	0.4	0.0
Interest on lease liability	0.1	0.0
Total finance lease expense	$ 0.5	$ 0.0