RISK MANAGEMENT AND DERIVATIVES - FV of Derivative Instruments Included within Consolidated Balance Sheet (Details) - USD ($) $ in Millions	Feb. 28, 2025	May 31, 2024
Derivatives, Fair Value [Line Items]
DERIVATIVE ASSETS	$ 641	$ 343
DERIVATIVE LIABILITIES	99	151
Derivatives formally designated as hedging instruments
Derivatives, Fair Value [Line Items]
DERIVATIVE ASSETS	629	313
DERIVATIVE LIABILITIES	87	146
Derivatives not designated as hedging instruments
Derivatives, Fair Value [Line Items]
DERIVATIVE ASSETS	12	30
DERIVATIVE LIABILITIES	12	5
Prepaid expenses and other current assets | Foreign exchange forwards and options | Derivatives formally designated as hedging instruments
Derivatives, Fair Value [Line Items]
DERIVATIVE ASSETS	479	269
Prepaid expenses and other current assets | Foreign exchange forwards and options | Derivatives not designated as hedging instruments
Derivatives, Fair Value [Line Items]
DERIVATIVE ASSETS	12	30
Deferred income taxes and other assets | Foreign exchange forwards and options | Derivatives formally designated as hedging instruments
Derivatives, Fair Value [Line Items]
DERIVATIVE ASSETS	128	44
Deferred income taxes and other assets | Interest rate swaps | Derivatives formally designated as hedging instruments
Derivatives, Fair Value [Line Items]
DERIVATIVE ASSETS	22	0
Accrued liabilities | Foreign exchange forwards and options | Derivatives formally designated as hedging instruments
Derivatives, Fair Value [Line Items]
DERIVATIVE LIABILITIES	74	110
Accrued liabilities | Foreign exchange forwards and options | Derivatives not designated as hedging instruments
Derivatives, Fair Value [Line Items]
DERIVATIVE LIABILITIES	12	5
Deferred income taxes and other liabilities | Foreign exchange forwards and options | Derivatives formally designated as hedging instruments
Derivatives, Fair Value [Line Items]
DERIVATIVE LIABILITIES	9	5
Deferred income taxes and other liabilities | Interest rate swaps | Derivatives formally designated as hedging instruments
Derivatives, Fair Value [Line Items]
DERIVATIVE LIABILITIES	$ 4	$ 31