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, 2023	May 31, 2022	May 31, 2021
Income Tax Disclosure [Abstract]
Income tax expense at the U.S. statutory federal income tax rate	$ 136,370	$ 127,428	$ 140,372
Foreign rate differential and other foreign tax adjustments	1,535	6,278	11,942
State and local income taxes, net	22,017	20,393	18,625
Impact of GILTI provisions	4,217	1,709	1,598
Nondeductible business expense	1,257	532	616
Valuation allowance	(1,199)	(32,720)	(4,389)
Deferred tax liability for unremitted foreign earnings		(10,686)	5,348
Changes in unrecognized tax benefits	(3,334)	(1,682)	(1,847)
Equity-based compensation	(3,482)	(1,776)	(8,651)
Nondeductible goodwill impairment	7,264
Other	2,608	4,857	1,324
Provision for Income Taxes	$ 169,651	$ 114,333	$ 164,938
Effective Income Tax Rate	26.10%	18.80%	24.70%