Pensions and Other Postretirement Benefits (Details Textual) - USD ($) $ in Millions	9 Months Ended
	Jan. 31, 2025	Jan. 31, 2024
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Contributions by Employer	$ 1.0
Defined Benefit Plan, Plan Assets, Benefits Paid	2.7	$ 2.8
Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Settlement loss (gain)	$ 0.0	$ 3.2