Leases (Details 1) - USD ($) $ in Millions		3 Months Ended
		Jul. 31, 2025	Jul. 31, 2024
Leases [Abstract]
Operating lease cost		$ 12.4	$ 12.5
Finance lease cost:
Amortization of right-of-use assets		0.9	0.8
Interest on lease liabilities		0.2	0.2
Variable lease cost		5.9	6.5
Short-term lease cost		10.3	11.2
Total lease cost	[1]	$ 29.7	$ 31.2

[1] Total lease cost does not include sublease income which is immaterial for all years presented.