Risk Management and Derivatives - FV of Derivative Instruments Included within Consolidated Balance Sheet (Detail) - USD ($) $ in Millions	May 31, 2021	May 31, 2020
Derivatives, Fair Value [Line Items]
DERIVATIVE ASSETS	$ 92	$ 95
Derivatives formally designated as hedging instruments
Derivatives, Fair Value [Line Items]
DERIVATIVE ASSETS	58	44
DERIVATIVE LIABILITIES	426	190
Derivatives formally designated as hedging instruments | Foreign Exchange Contract | Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
DERIVATIVE ASSETS	42	43
Derivatives formally designated as hedging instruments | Foreign Exchange Contract | Deferred income taxes and other assets
Derivatives, Fair Value [Line Items]
DERIVATIVE ASSETS	16	1
Derivatives formally designated as hedging instruments | Foreign Exchange Contract | Accrued liabilities
Derivatives, Fair Value [Line Items]
DERIVATIVE LIABILITIES	385	173
Derivatives formally designated as hedging instruments | Foreign Exchange Contract | Deferred income taxes and other liabilities
Derivatives, Fair Value [Line Items]
DERIVATIVE LIABILITIES	41	17
Derivatives not designated as hedging instruments
Derivatives, Fair Value [Line Items]
DERIVATIVE ASSETS	34	51
DERIVATIVE LIABILITIES	457	207
Derivatives not designated as hedging instruments | Deferred income taxes and other liabilities
Derivatives, Fair Value [Line Items]
DERIVATIVE LIABILITIES	31	17
Derivatives not designated as hedging instruments | Foreign Exchange Contract | Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
DERIVATIVE ASSETS	34	48
Derivatives not designated as hedging instruments | Foreign Exchange Contract | Deferred income taxes and other assets
Derivatives, Fair Value [Line Items]
DERIVATIVE ASSETS	0	2
Derivatives not designated as hedging instruments | Foreign Exchange Contract | Accrued liabilities
Derivatives, Fair Value [Line Items]
DERIVATIVE LIABILITIES	30	15
Derivatives not designated as hedging instruments | Embedded derivatives | Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
DERIVATIVE ASSETS	0	1
Derivatives not designated as hedging instruments | Embedded derivatives | Accrued liabilities
Derivatives, Fair Value [Line Items]
DERIVATIVE LIABILITIES	$ 1	$ 2