Leases (Details 2) - USD ($) $ in Millions	12 Months Ended
	Apr. 30, 2024	Apr. 30, 2023	Apr. 30, 2022
Leases [Abstract]
Operating cash flows from operating leases	$ 49.2	$ 44.3	$ 45.6
Operating cash flows from finance leases	0.5	0.1	0.1
Financing cash flows from finance leases	3.3	1.7	2.1
Right-of-use assets obtained in exchange for operating lease liabilities	98.4	37.9	7.2
Right-of-use assets obtained in exchange for finance lease liabilities	$ 10.9	$ 1.5	$ 1.8