Reportable Business Segments (Geographic Information) (Details) - USD ($) $ in Millions	Jun. 30, 2025	Dec. 31, 2024
Segment Reporting Information [Line Items]
Property, plant and equipment, net of accumulated depreciation of $1,002.1 and $956.8 in 2025 and 2024, respectively	$ 825.6	$ 800.1
United States [Member]
Segment Reporting Information [Line Items]
Property, plant and equipment, net of accumulated depreciation of $1,002.1 and $956.8 in 2025 and 2024, respectively	549.8	537.3
Mexico [Member]
Segment Reporting Information [Line Items]
Property, plant and equipment, net of accumulated depreciation of $1,002.1 and $956.8 in 2025 and 2024, respectively	264.2	254.0
Canada [Member]
Segment Reporting Information [Line Items]
Property, plant and equipment, net of accumulated depreciation of $1,002.1 and $956.8 in 2025 and 2024, respectively	4.1	2.9
International [Member]
Segment Reporting Information [Line Items]
Property, plant and equipment, net of accumulated depreciation of $1,002.1 and $956.8 in 2025 and 2024, respectively	$ 7.5	$ 5.9