Leases - Components of Lease Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Leases [Abstract]
Fixed operating lease expense	$ 32.4	$ 35.7
Variable operating lease expense	6.1	6.6
Total operating lease expense	$ 38.5	$ 42.3