Leases - Components of Lease Expense (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Lease, Cost [Abstract]
Operating lease expense	$ 6.5	$ 6.3	$ 13.4	$ 12.3
Short-term lease expense	1.2	0.7	2.9	1.7
Low-value lease expense	0.2	0.1	0.5	0.1
Variable lease expense	2.1	1.5	4.2	2.7
Finance lease expense:
Amortization of right-of-use assets	1.4	0.9	2.7	1.7
Interest on lease liabilities	0.6	0.2	1.1	0.4
Sublease income	(0.1)	(0.1)	(0.1)	(0.1)
Total lease expense	$ 11.9	$ 9.6	$ 24.7	$ 18.8