Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	May 31, 2021	May 31, 2020	May 31, 2019
Statement of Comprehensive Income [Abstract]
Change in fair value of interest rate lock agreements, tax expense (benefit)	$ 36,172	$ (32,793)	$ (8,734)
Amortization of interest rate lock agreement, tax benefit	463	463	717
Other, tax expense (benefit)	3,578	(2,802)	(1,618)
Other comprehensive (loss) income, tax expense (benefit)	$ 40,213	$ (35,132)	$ (9,635)