Reportable Business Segments (Geographic Information) (Details) - USD ($) $ in Millions	Jun. 30, 2026	Dec. 31, 2025
Segment Reporting Information [Line Items]
Property, plant and equipment, net of accumulated depreciation of $1,088.0 and $1,043.9 in 2026 and 2025, respectively	$ 934.2	$ 887.2
United States [Member]
Segment Reporting Information [Line Items]
Property, plant and equipment, net of accumulated depreciation of $1,088.0 and $1,043.9 in 2026 and 2025, respectively	655.7	607.4
Mexico [Member]
Segment Reporting Information [Line Items]
Property, plant and equipment, net of accumulated depreciation of $1,088.0 and $1,043.9 in 2026 and 2025, respectively	269.1	269.2
Canada [Member]
Segment Reporting Information [Line Items]
Property, plant and equipment, net of accumulated depreciation of $1,088.0 and $1,043.9 in 2026 and 2025, respectively	3.9	4.2
International [Member]
Segment Reporting Information [Line Items]
Property, plant and equipment, net of accumulated depreciation of $1,088.0 and $1,043.9 in 2026 and 2025, respectively	$ 5.5	$ 6.4