Derivative Financial Instruments (Details 4) - Cash Flow Hedging [Member] - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Jan. 31, 2025	Jan. 31, 2024	Jan. 31, 2025	Jan. 31, 2024
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized in other comprehensive income (loss)		$ 0.0	$ 0.0	$ 0.0	$ 0.0
Change in accumulated other comprehensive income (loss)		59.9	3.3	66.7	10.1
Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) reclassified from accumulated other comprehensive income (loss)	[1]	(3.0)	(3.3)	(9.8)	(10.1)
Other Debt Costs
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) reclassified from accumulated other comprehensive income (loss)	[2]	$ (56.9)	$ 0.0	$ (56.9)	$ 0.0

[1] Interest expense – net, as presented in the Condensed Statements of Consolidated Income was $95.4 and $99.8 for the three months ended January 31, 2025 and 2024, respectively, and $294.5 and $167.0 for the nine months ended January 31, 2025 and 2024, respectively. The reclassification includes terminated contracts which were designated as cash flow hedges.

[2] Other debt gains (charges) – net, as presented in the Condensed Statement of Consolidated Income was $30.3 for the three and nine months ended January 31, 2025. The reclassification is related to the debt extinguishment due to the tender offers, as discussed in Note 9: Debt and Financing Arrangements