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INCOME TAXES - Schedule of Total Income Tax Expense and Amount Computed by Statutory Federal Income Tax Rate to Income Before Income Taxes (Details) - USD ($) $ in Millions | 12 Months Ended
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May 31, 2025 | May 31, 2024 | May 31, 2023
Income Tax Disclosure [Abstract] |  |  |
Taxes computed at federal statutory rate | $ 1,143 | $ 1,226 | $ 1,126
U.S. and foreign return-to-provision adjustments | 5 | 11 | (44)
State and local income taxes, net of federal benefit | 137 | 177 | 152
Foreign operations | 101 | 65 | 96
Non-deductible expenses | 72 | 48 | 40
Uncertain tax positions | (5) | (21) | 60
Benefits from share-based payments | (18) | (26) | (18)
Valuation allowance | 21 | 59 | 59
Foreign tax rate enactments | 6 | 0 | 3
State deferred tax remeasurement | 0 | 54 | 0
Goodwill impairment charges | 0 | 0 | 8
Corporate structuring transactions | (66) | 0 | 0
Other, net | (47) | (88) | (91)
Provision for income taxes | $ 1,349 | $ 1,505 | $ 1,391
Effective Tax Rate | 24.80% | 25.80% | 25.90%

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