Property, Plant and Equipment (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2023
Property, Plant and Equipment [Abstract]
Property, plant and equipment	$ 1,279.9	$ 1,286.0
Less: accumulated depreciation	(889.4)	(920.3)
Net property, plant and equipment	390.5	365.7
Depreciation expense	50.3	46.9	$ 46.5
Land [Member]
Property, Plant and Equipment [Abstract]
Property, plant and equipment	16.4	16.3
Buildings and Improvements [Member]
Property, Plant and Equipment [Abstract]
Property, plant and equipment	$ 257.7	280.7
Buildings and Improvements [Member] | Minimum [Member]
Property, Plant and Equipment [Abstract]
Property, plant and equipment, depreciable lives	10 years
Buildings and Improvements [Member] | Maximum [Member]
Property, Plant and Equipment [Abstract]
Property, plant and equipment, depreciable lives	40 years
Machinery and Equipment [Member]
Property, Plant and Equipment [Abstract]
Property, plant and equipment	$ 843.7	824.4
Machinery and Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Abstract]
Property, plant and equipment, depreciable lives	3 years
Machinery and Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Abstract]
Property, plant and equipment, depreciable lives	15 years
Office Equipment [Member]
Property, Plant and Equipment [Abstract]
Property, plant and equipment	$ 92.6	97.0
Office Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Abstract]
Property, plant and equipment, depreciable lives	3 years
Office Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Abstract]
Property, plant and equipment, depreciable lives	10 years
Construction in Progress [Member]
Property, Plant and Equipment [Abstract]
Property, plant and equipment	$ 69.5	$ 67.6