Property, Plant and Equipment (Details) - USD ($) $ in Millions	Sep. 30, 2024	Mar. 31, 2024
Property, Plant and Equipment [Abstract]
Property, plant and equipment, Gross	$ 1,317.9	$ 1,286.0
Less: accumulated depreciation	(944.0)	(920.3)
Net property, plant and equipment	373.9	365.7
Land [Member]
Property, Plant and Equipment [Abstract]
Property, plant and equipment, Gross	16.8	16.3
Buildings and Improvements [Member]
Property, Plant and Equipment [Abstract]
Property, plant and equipment, Gross	$ 289.3	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, Gross	$ 858.4	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, Gross	$ 95.8	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, Gross	$ 57.6	$ 67.6