Leases- Lease Cost (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Leases [Abstract]
Operating lease cost	$ 2.3	$ 2.6	$ 6.4	$ 6.5
Finance lease cost:
Amortization of leased assets	0.2	0.0	0.2	0.0
Interest on lease liabilities	0.3	0.0	0.3	0.0
Total finance lease cost	0.5	0.0	0.5	0.0
Total operating and financing lease cost	$ 2.8	$ 2.6	$ 6.9	$ 6.5