Reconciliation of Income Tax Expense (Benefit) Computed by Applying U.S. Statutory Federal Income Tax Rate against Income (Loss) before Income Taxes to Provision (Benefit) for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	May 31, 2022	May 31, 2021	May 31, 2020
Income Tax Disclosure [Abstract]
Income tax expense at the U.S. statutory federal income tax rate	$ 127,428	$ 140,372	$ 85,630
Foreign rate differential and other foreign tax adjustments	6,278	11,942	3,433
State and local income taxes, net	20,393	18,625	11,651
Impact of GILTI provisions	1,709	1,598	3,051
Nondeductible business expense	532	616	2,005
Valuation allowance	(32,720)	(4,389)	14,008
Deferred tax liability for unremitted foreign earnings	(10,686)	5,348	(5,527)
Changes in unrecognized tax benefits	(1,682)	(1,847)	1,292
Equity-based compensation	(1,776)	(8,651)	(5,162)
FY19 GILTI impact of issued regulations			(4,348)
Other	4,857	1,324	(3,351)
Provision for Income Taxes	$ 114,333	$ 164,938	$ 102,682
Effective Income Tax Rate	18.80%	24.70%	25.20%