Leases - Lease Expense (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating leases	[1]	$ 38.6	$ 37.3
Finance leases
Amortization		5.9	4.4
Interest		0.8	0.8
Total finance leases		$ 6.7	$ 5.2
Operating lease expense				$ 37.9

[1] (1) Includes short-term leases and variable lease costs, which are immaterial