Leases - Lease Cost (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Lease Cost
Operating Lease Cost	$ 3.9	$ 4.0	$ 11.6	$ 11.9
Variable Lease, Cost	1.2	1.0	3.5	3.2
Short-Term Lease Cost	0.1	(0.3)	0.3	0.5
Total Lease Cost	$ 5.2	$ 4.7	$ 15.4	$ 15.6