Leases (Details) - USD ($) $ in Millions	Jul. 31, 2025	Apr. 30, 2025
Leases [Abstract]
Operating Lease, Right-of-Use Asset	$ 120.1	$ 115.4
Current operating lease liabilities	$ 35.6	$ 37.5
Operating lease current liabilities balance sheet location	Other Liabilities, Current	Other Liabilities, Current
Noncurrent operating lease liabilities	$ 90.7	$ 84.1
Total operating lease liabilities	126.3	121.6
Machinery and equipment	25.4	25.4
Accumulated depreciation	(14.3)	(13.5)
Total property, plant, and equipment	$ 11.1	$ 11.9
Finance lease right-of-use assets balance sheet location	Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Machinery and Equipment, Gross, Property, Plant and Equipment, Net	Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Machinery and Equipment, Gross, Property, Plant and Equipment, Net
Other current liabilities	$ 3.2	$ 3.3
Finance lease current liabilities balance sheet location	Other Liabilities, Current	Other Liabilities, Current
Other noncurrent liabilities	$ 8.5	$ 9.2
Finance lease noncurrent liabilities balance sheet location	Other Liabilities, Noncurrent	Other Liabilities, Noncurrent
Total finance lease liabilities	$ 11.7	$ 12.5
Total finance lease liabilities balance sheet location	Liabilities	Liabilities