Description of Business, The Separation, Agreements with the Former Parent and Separation Costs, and Basis of Presentation - Summary of Property, Plant and Equipment, Net, by Geographic Region (Details) - USD ($) $ in Millions	May 31, 2024	May 31, 2023	Apr. 30, 2022
Property, Plant and Equipment [Line Items]
Total property, plant and equipment, net	$ 474.8	$ 414.4	$ 1.4
United States
Property, Plant and Equipment [Line Items]
Total property, plant and equipment, net	328.4	328.9
Canada
Property, Plant and Equipment [Line Items]
Total property, plant and equipment, net	42.3	14.8
Mexico
Property, Plant and Equipment [Line Items]
Total property, plant and equipment, net	58.7	36.1
Other
Property, Plant and Equipment [Line Items]
Total property, plant and equipment, net	$ 45.4	$ 34.6