Accumulated Other Comprehensive Income (Loss) - Schedule of Reclassifications Out of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Nov. 30, 2021	Nov. 30, 2020	Nov. 30, 2021	Nov. 30, 2020
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	$ 21,902	$ 24,557	$ 43,756	$ 49,107
Income taxes	(64,713)	(43,676)	(105,837)	(68,891)
Net income	294,669	284,857	625,848	584,862
Amount Reclassified from Accumulated Other Comprehensive Income (Loss) | Unrealized Loss on Interest Rate Locks
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income taxes	(148)	(115)	(296)	(231)
Net income	460	359	919	717
Amount Reclassified from Accumulated Other Comprehensive Income (Loss) | Unrealized Loss on Interest Rate Locks | Interest Rate Locks
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	$ 608	$ 474	$ 1,215	$ 948