Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	May 31, 2021	May 31, 2020	May 31, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 1,110,968	$ 876,037	$ 884,981
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	68,182	(11,321)	(21,572)
Change in fair value of interest rate lock agreements, net of tax expense (benefit) of $36,172, $(32,793) and $(8,734), respectively	106,843	(94,954)	(27,659)
Amortization of interest rate lock agreement, net of tax benefit of $463, $463 and $717, respectively	(1,433)	(1,433)	(1,179)
Other, net of tax expense (benefit) of $3,578, $(2,802) and $(1,618), respectively	10,676	(8,495)	(5,085)
Other comprehensive income (loss), net of tax expense (benefit) of $40,213, $(35,132) and $(9,635), respectively	184,268	(116,203)	(55,495)
Comprehensive income	$ 1,295,236	$ 759,834	$ 829,486