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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
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%