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, 2023	Aug. 31, 2023	Nov. 30, 2022	Aug. 31, 2022	Nov. 30, 2023	Nov. 30, 2022
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	$ 26,590		$ 28,920		$ 51,134	$ 56,640
Income taxes	(99,249)		(92,065)		(190,598)	(152,931)
Net income	374,613	$ 385,085	324,293	$ 351,689	759,698	675,982
Amount Reclassified from Accumulated Other Comprehensive Income (Loss) | Unrealized Income on Interest Rate Locks
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income taxes	(503)		(513)		(990)	(1,025)
Net income	1,495		1,521		2,937	3,042
Amount Reclassified from Accumulated Other Comprehensive Income (Loss) | Unrealized Income on Interest Rate Locks | Interest Rate Locks
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	$ 1,998		$ 2,034		$ 3,927	$ 4,067