RISK MANAGEMENT AND DERIVATIVES - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	Aug. 31, 2024	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	$ 63
Maximum term over which the company hedges exposures to the variability of cash flows for its forecasted transactions	27 months
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	$ 16,600	$ 16,200
Derivatives designated as cash flow hedges | Derivatives not designated as hedging instruments
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Total notional amount of outstanding derivatives	3,800	4,400
Fair Value Hedging | Derivatives formally designated as hedging instruments
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Total notional amount of outstanding derivatives	$ 1,800	$ 1,800