Consolidated Condensed Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Feb. 28, 2021	Feb. 29, 2020	Feb. 28, 2021	Feb. 29, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 258,384	$ 234,520	$ 843,246	$ 731,452
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	8,947	(4,039)	38,853	4,098
Change in fair value of interest rate lock agreements, net of tax expense (benefit) of $25,689, $(17,294), $34,761 and $(19,792), respectively	75,850	(53,582)	102,634	(60,724)
Amortization of interest rate lock agreements, net of tax benefit of $116, $116, $347 and $411, respectively	(358)	(358)	(1,075)	(1,011)
Other comprehensive income (loss), net of tax expense (benefit) of $25,805, $(17,178), $35,108 and $(19,381), respectively	84,439	(57,979)	140,412	(57,637)
Comprehensive income	$ 342,823	$ 176,541	$ 983,658	$ 673,815