Leases - Components of Lease Expense (Includes Related Party Leases) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Lease, Cost [Abstract]
Operating lease expense	$ 6.2	$ 5.8	$ 18.5	$ 17.5
Short-term lease expense	1.3	1.0	3.0	3.4
Low-value lease expense	0.1	0.1	0.2	0.5
Variable lease expense	2.0	0.2	4.7	0.3
Finance lease expense:
Amortization of right-of-use assets	1.1	0.6	2.8	1.3
Interest on lease liabilities	0.3	0.1	0.7	0.3
Sublease income			(0.1)
Total lease expense	$ 11.0	$ 7.8	$ 29.8	$ 23.3