Lease Obligations (Supplemental Balance Sheet) (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Leases [Abstract]
Operating lease right-of-use assets	$ 137.9	$ 175.7
Current portion of operating lease liabilities	51.5	53.4
Operating lease liabilities	106.7	131.1
Total operating lease liabilities	158.2	184.5
Other noncurrent assets	3.9	3.6
Current maturities of long-term debt	1.5	1.3
Long-term debt	2.4	2.4
Total finance lease liabilities	$ 3.9	$ 3.7
Finance lease, right-of-use asset, statement of financial position [Extensible Enumeration]	Other noncurrent assets	Other noncurrent assets
Finance lease, liability, current, statement of financial position [Extensible Enumeration]	Current maturities of long-term debt and short-term debt	Current maturities of long-term debt and short-term debt
Finance lease, liability, noncurrent, statement of financial position [Extensible Enumeration]	Long-term debt	Long-term debt