RISK MANAGEMENT AND DERIVATIVES - FV of Derivative Instruments Included within Consolidated Balance Sheet (Details) - USD ($) $ in Millions	Nov. 30, 2025	May 31, 2025
Derivatives, Fair Value [Line Items]
DERIVATIVE ASSETS	$ 288	$ 131
DERIVATIVE LIABILITIES	328	371
Derivatives formally designated as hedging instruments
Derivatives, Fair Value [Line Items]
DERIVATIVE ASSETS	277	121
DERIVATIVE LIABILITIES	313	361
Derivatives not designated as hedging instruments
Derivatives, Fair Value [Line Items]
DERIVATIVE ASSETS	11	10
DERIVATIVE LIABILITIES	15	10
Prepaid expenses and other current assets | Foreign exchange forwards and options | Derivatives formally designated as hedging instruments
Derivatives, Fair Value [Line Items]
DERIVATIVE ASSETS	155	75
Prepaid expenses and other current assets | Foreign exchange forwards and options | Derivatives not designated as hedging instruments
Derivatives, Fair Value [Line Items]
DERIVATIVE ASSETS	11	10
Deferred income taxes and other assets | Foreign exchange forwards and options | Derivatives formally designated as hedging instruments
Derivatives, Fair Value [Line Items]
DERIVATIVE ASSETS	50	22
Deferred income taxes and other assets | Interest rate swaps | Derivatives formally designated as hedging instruments
Derivatives, Fair Value [Line Items]
DERIVATIVE ASSETS	72	24
Accrued liabilities | Foreign exchange forwards and options | Derivatives formally designated as hedging instruments
Derivatives, Fair Value [Line Items]
DERIVATIVE LIABILITIES	244	216
Accrued liabilities | Foreign exchange forwards and options | Derivatives not designated as hedging instruments
Derivatives, Fair Value [Line Items]
DERIVATIVE LIABILITIES	15	10
Deferred income taxes and other liabilities | Foreign exchange forwards and options | Derivatives formally designated as hedging instruments
Derivatives, Fair Value [Line Items]
DERIVATIVE LIABILITIES	69	142
Deferred income taxes and other liabilities | Interest rate swaps | Derivatives formally designated as hedging instruments
Derivatives, Fair Value [Line Items]
DERIVATIVE LIABILITIES	$ 0	$ 3