Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	May 31, 2020	May 31, 2019	May 31, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 876,037	$ 884,981	$ 842,586
Other comprehensive (loss) income, net of tax:
Foreign currency translation adjustments	(11,321)	(21,572)	19,276
Change in fair value of interest rate lock agreements, net of tax benefit of $(32,793), $(8,734) and $0, respectively	(94,954)	(27,659)	0
Amortization of interest rate lock agreement, net of tax benefit of $463, $717 and $571, respectively	(1,433)	(1,179)	(933)
Other, net of tax (benefit) expense of $(2,802), $(1,618) and $119, respectively	(8,495)	(5,085)	1,029
Other comprehensive (loss) income, net of tax (benefit) expense of $(35,132), $(9,635) and $690, respectively	(116,203)	(55,495)	19,372
Comprehensive income	$ 759,834	$ 829,486	$ 861,958