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RISK MANAGEMENT AND DERIVATIVES - Additional Information (Details) - USD ($) $ in Millions | 9 Months Ended |
--- | --- | ---
Feb. 28, 2025 | May 31, 2024
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Deferred net gains (net of tax) expected to be reclassified to Net Income during the next 12 months | $ 471 |
Maximum term over which the company hedges exposures to the variability of cash flows for its forecasted transactions | 27 months |
Derivatives not designated as hedging instruments |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Total notional amount of outstanding derivatives | $ 3,300 | $ 4,400
Derivatives designated as cash flow hedges | Derivatives formally designated as hedging instruments |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Total notional amount of outstanding derivatives | 14,700 | 16,200
Fair Value Hedging | Derivatives formally designated as hedging instruments |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Total notional amount of outstanding derivatives | $ 2,400 | $ 1,800

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