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, 2021	Feb. 29, 2020	Feb. 28, 2021	Feb. 29, 2020
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	$ 24,552	$ 25,943	$ 73,659	$ 79,441
Income taxes	(43,619)	(54,536)	(112,510)	(144,838)
Net income	258,384	234,520	843,246	731,775
Amount Reclassified from Accumulated Other Comprehensive Loss | Unrealized Income (Loss) on Interest Rate Hedges
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income taxes	(116)	(116)	(347)	(411)
Net income	358	358	1,075	1,011
Amount Reclassified from Accumulated Other Comprehensive Loss | Unrealized Income (Loss) on Interest Rate Hedges | Interest Rate Locks
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	$ 474	$ 474	$ 1,422	$ 1,422