v3.26.1
Property, Plant, and Equipment (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Sep. 30, 2025
Property, Plant and Equipment [Line Items]    
Land $ 16.5 $ 16.7
Buildings and Improvements, Gross 112.8 114.8
Machinery and Equipment, Gross 965.7 984.4
Capitalized Computer Software, Gross 68.5 68.2
Construction in Progress, Gross 66.4 62.1
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment 937.2 951.2
Property, Plant and Equipment, Gross 1,229.9 1,246.2
Property, plant and equipment, net $ 292.7 $ 295.0