Lease Arrangements - Lease Costs (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Finance lease expense
Amortization of right-of-use assets	$ 2.9	$ 1.7	$ 3.2
Interest on lease liabilities	0.9	1.0	0.3
Operating lease expense	15.5	14.8	15.2
Other lease expense	7.6	9.6	6.6
Total lease expense	$ 26.9	$ 27.1	$ 25.3