Income Taxes (Details 1) - USD ($) $ in Millions	12 Months Ended
	Apr. 30, 2025	Apr. 30, 2024	Apr. 30, 2023
Current:
Federal	$ 228.0	$ 234.1	$ 217.9
Foreign	11.7	10.1	5.4
State and local	52.3	48.7	49.5
Deferred:
Federal	(45.4)	(35.7)	(158.5)
Foreign	(0.5)	(2.3)	(1.0)
State and local	(62.1)	(2.5)	(31.2)
Total income tax expense	$ 184.0	$ 252.4	$ 82.1