Reportable Business Segments (Geographic Information) (Details) - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025
Segment Reporting Information [Line Items]
Property, plant and equipment, net of accumulated depreciation of $1,064.3 and $1,043.9 in 2026 and 2025, respectively	$ 917.6	$ 887.2
United States [Member]
Segment Reporting Information [Line Items]
Property, plant and equipment, net of accumulated depreciation of $1,064.3 and $1,043.9 in 2026 and 2025, respectively	639.9	607.4
Mexico [Member]
Segment Reporting Information [Line Items]
Property, plant and equipment, net of accumulated depreciation of $1,064.3 and $1,043.9 in 2026 and 2025, respectively	267.7	269.2
Canada [Member]
Segment Reporting Information [Line Items]
Property, plant and equipment, net of accumulated depreciation of $1,064.3 and $1,043.9 in 2026 and 2025, respectively	4.1	4.2
International [Member]
Segment Reporting Information [Line Items]
Property, plant and equipment, net of accumulated depreciation of $1,064.3 and $1,043.9 in 2026 and 2025, respectively	$ 5.9	$ 6.4