Income Taxes - Schedule of Components of Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	May 31, 2025	May 31, 2024	May 31, 2023
Current:
Federal	$ 352,652	$ 327,616	$ 248,413
State and local	96,808	79,583	56,589
Foreign	10,580	25,344	13,205
Current income tax expense	460,040	432,543	318,207
Deferred	(8,119)	(30,500)	26,931
Income taxes	$ 451,921	$ 402,043	$ 345,138