Lease Obligations (Supplemental Cash Flow) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Leases [Abstract]
Operating cash flows from operating leases	$ 64.1	$ 66.5	$ 60.4
Operating cash flows from finance leases	0.1	0.1	0.1
Financing cash flows from finance leases	1.4	1.5	1.8
Right-of-use assets obtained in exchange for new operating lease liabilities	35.1	44.6	59.8
Right-of-use assets obtained in exchange for new finance lease liabilities	$ 1.7	$ 1.1	$ 1.4