Notes Payable and Long-Term Debt - Additional Information (Details) - USD ($) $ in Millions	Aug. 31, 2025	Apr. 30, 2023	Apr. 30, 2022
Debt Instrument [Line Items]
Letters of credit and surety bonds	$ 92
Unused letters of credit	$ 67
Senior Notes | 3.950% Senior Notes
Debt Instrument [Line Items]
Stated interest rate (as a percent)	3.95%
Senior Notes | 3.600% Senior Notes
Debt Instrument [Line Items]
Stated interest rate (as a percent)	3.60%
Senior Notes | 3.000% Senior Notes
Debt Instrument [Line Items]
Stated interest rate (as a percent)	3.00%
Senior Notes | 1.700% Senior Notes
Debt Instrument [Line Items]
Stated interest rate (as a percent)	1.70%
Senior Notes | 4.250% Senior Notes
Debt Instrument [Line Items]
Stated interest rate (as a percent)	4.25%		4.25%
Senior Notes | 5.450% Senior Notes
Debt Instrument [Line Items]
Stated interest rate (as a percent)	5.45%	5.45%