Accumulated Other Comprehensive Income (Loss) - Schedule of Reclassifications Out of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Feb. 29, 2024	Nov. 30, 2023	Aug. 31, 2023	Feb. 28, 2023	Nov. 30, 2022	Aug. 31, 2022	Feb. 29, 2024	Feb. 28, 2023
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	$ 25,530			$ 28,819			$ 76,664	$ 85,459
Income taxes	(98,621)			(92,539)			(289,219)	(245,470)
Net income	397,579	$ 374,613	$ 385,085	325,827	$ 324,293	$ 351,689	1,157,277	1,001,809
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	(513)			(512)			(1,503)	(1,537)
Net income	1,524			1,521			4,461	4,563
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	$ 2,037			$ 2,033			$ 5,964	$ 6,100