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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 | 3 Months Ended | 12 Months Ended
--- | --- | ---
Feb. 28, 2019 | May 31, 2019 | May 31, 2018 | May 31, 2017
Income Tax Disclosure [Abstract] |  |  |  |
Income tax expense at the U.S. statutory federal income tax rate |  | $ 71,367 | $ 121,812 | $ 85,517
Impact of foreign operations |  | (1,571) | (16,276) | (20,156)
State and local income taxes, net |  | 7,224 | 9,520 | 4,734
Impact of global intangible low-taxed income |  | 5,772 |  |
Domestic manufacturing deduction |  |  | (4,839) | (2,537)
Nondeductible business expense |  | 2,259 | 2,473 | 2,394
Valuation allowance |  | 7,021 | (5,235) | 933
Deferred tax liability for unremitted foreign earnings |  |  | (77,970) | (621)
Changes in unrecognized tax benefits |  | (8,480) |  |
Other |  | 1,195 | 737 | 1,476
Equity-based compensation |  | (4,496) | (4,652) | (12,078)
Transition tax liability | $ 1,800 | (1,868) | 67,899 |
Remeasurement of U.S. deferred income taxes |  | (6,265) | (15,678) |
Provision for Income Taxes |  | $ 72,158 | $ 77,791 | $ 59,662
Effective Income Tax Rate |  | 21.20% | 18.70% | 24.40%

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