Leases (Details) - USD ($) $ in Millions	Apr. 30, 2025	Apr. 30, 2024
Leases [Abstract]
Operating lease right-of-use assets	$ 115.4	$ 174.6
Current operating lease liabilities	$ 37.5	$ 40.5
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Other Liabilities, Current	Other Liabilities, Current
Noncurrent operating lease liabilities	$ 84.1	$ 143.5
Total operating lease liabilities	121.6	184.0
Machinery and equipment	25.4	18.7
Accumulated depreciation	$ (13.5)	$ (8.0)
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	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
Total property, plant, and equipment	$ 11.9	$ 10.7
Other current liabilities	$ 3.3	$ 2.8
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Other Liabilities, Current	Other Liabilities, Current
Other noncurrent liabilities	$ 9.2	$ 8.3
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other Liabilities, Noncurrent	Other Liabilities, Noncurrent
Total finance lease liabilities	$ 12.5	$ 11.1
Total finance lease liabilities	Liabilities	Liabilities