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. 28, 2025	Nov. 30, 2024	Aug. 31, 2024	Feb. 29, 2024	Nov. 30, 2023	Aug. 31, 2023	Feb. 28, 2025	Feb. 29, 2024
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income taxes	$ (122,941)			$ (98,621)			$ (324,762)	$ (289,219)
Net income	463,497	$ 448,495	$ 452,033	397,579	$ 374,613	$ 385,085	1,364,025	1,157,277
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)			(513)			(1,539)	(1,503)
Net income	1,523			1,524			4,569	4,461
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	$ 2,036			$ 2,037			$ 6,108	$ 5,964