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Property, Plant and Equipment (Details) - USD ($) $ in Millions	Sep. 30, 2025	Mar. 31, 2025
Property, Plant and Equipment [Abstract]
Property, plant and equipment, Gross	$ 1,374.9	$ 1,279.9
Less: accumulated depreciation	(917.9)	(889.4)
Net property, plant and equipment	457.0	390.5
Land
Property, Plant and Equipment [Abstract]
Property, plant and equipment, Gross	19.3	16.4
Buildings and improvements
Property, Plant and Equipment [Abstract]
Property, plant and equipment, Gross	$ 279.5	257.7
Buildings and improvements | Minimum
Property, Plant and Equipment [Abstract]
Property, plant and equipment, Useful life	10 years
Buildings and improvements | Maximum
Property, Plant and Equipment [Abstract]
Property, plant and equipment, Useful life	40 years
Machinery and equipment
Property, Plant and Equipment [Abstract]
Property, plant and equipment, Gross	$ 902.5	843.7
Machinery and equipment | Minimum
Property, Plant and Equipment [Abstract]
Property, plant and equipment, Useful life	3 years
Machinery and equipment | Maximum
Property, Plant and Equipment [Abstract]
Property, plant and equipment, Useful life	15 years
Office equipment
Property, Plant and Equipment [Abstract]
Property, plant and equipment, Gross	$ 97.5	92.6
Office equipment | Minimum
Property, Plant and Equipment [Abstract]
Property, plant and equipment, Useful life	3 years
Office equipment | Maximum
Property, Plant and Equipment [Abstract]
Property, plant and equipment, Useful life	10 years
Construction in progress
Property, Plant and Equipment [Abstract]
Property, plant and equipment, Gross	$ 76.1	$ 69.5

X

- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
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-Subparagraph (SX 210.7-03(a)(8)(b))
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- Definition

Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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