Derivative Financial Instruments (Details 4) - Cash Flow Hedging [Member] - USD ($) $ in Millions		3 Months Ended
		Jul. 31, 2023	Jul. 31, 2022
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized in other comprehensive income (loss)		$ 0.0	$ 0.0
Change in accumulated other comprehensive income (loss)		3.4	3.3
Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) reclassified from accumulated other comprehensive income (loss)	[1]	$ (3.4)	$ (3.3)

[1] Interest expense – net, as presented in the Condensed Statements of Consolidated Income was $32.1 and $39.1 for the three months ended July 31, 2023 and 2022, respectively. The reclassification includes terminated contracts which were designated as cash flow hedges.