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FAIR VALUE MEASUREMENTS Narrative (Details) - USD ($) $ in Millions | Nov. 30, 2025 | May 31, 2025
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Marketable security investments maturity information [Abstract] |  |
Total debt, carrying value | $ 18,000 |
Senior Notes and Other Long Term Borrowings [Member] |  |
Marketable security investments maturity information [Abstract] |  |
Total debt, carrying value | 106,100 | $ 90,300
Fair Value Measurements Using Input Types Level 2 [Member] | Senior Notes and Other Borrowings [Member] |  |
Marketable security investments maturity information [Abstract] |  |
Total debt, fair value | $ 95,800 | $ 81,300

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