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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
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May 31, 2024 | May 31, 2023 | May 31, 2022
Income Tax Disclosure [Abstract] |  |  |
Income tax expense at the U.S. statutory federal income tax rate | $ 165,446 | $ 136,370 | $ 127,428
Foreign rate differential and other foreign tax adjustments | 4,342 | 1,535 | 6,278
State and local income taxes, net | 28,000 | 22,017 | 20,393
Impact of GILTI provisions | 3,548 | 4,217 | 1,709
Nondeductible business expense | 1,944 | 1,257 | 532
Valuation allowance | (754) | 1,199 | (32,720)
Deferred tax liability for unremitted foreign earnings | 3,658 |  | (10,686)
Changes in unrecognized tax benefits | 2,209 | (3,334) | (1,682)
Equity-based compensation | (5,496) | (3,482) | (1,776)
Nondeductible goodwill impairment |  | 7,264 |
Other | (4,502) | 2,608 | 4,857
Provision for Income Taxes | $ 198,395 | $ 169,651 | $ 114,333
Effective Income Tax Rate | 25.20% | 26.10% | 18.80%

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- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-12 + Details
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