Accumulated Other Comprehensive Income (Loss) - Schedule of Reclassifications Out of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Nov. 30, 2025	Aug. 31, 2025	Nov. 30, 2024	Aug. 31, 2024	Nov. 30, 2025	Nov. 30, 2024
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	$ 28,076		$ 26,665		$ 52,237	$ 52,284
Income taxes	(133,161)		(117,192)		(237,928)	(201,821)
Net income	495,343	$ 491,140	448,495	$ 452,033	986,483	900,528
Amount Reclassified from Accumulated Other Comprehensive Income (Loss) | Unrealized Income on Interest Rate Locks
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	2,036		2,036		4,072	4,072
Income taxes	(513)		(513)		(1,026)	(1,026)
Net income	$ 1,523		$ 1,523		$ 3,046	$ 3,046