Income Taxes - Schedule of Reconciliation of Income Tax Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	May 31, 2024	May 31, 2023	May 31, 2022
Reconciliation of income tax expense for continuing operations using the statutory rate and actual income tax expense is as follows:
Income taxes at the U.S. federal statutory rate	$ 414,463	$ 355,561	$ 314,741
Permanent differences	(67,310)	(59,502)	(85,413)
State and local income taxes, net of federal benefit	49,560	46,245	33,547
Other	5,330	2,834	136
Income taxes	$ 402,043	$ 345,138	$ 263,011