Risk Management and Derivatives - Amounts Affecting Consolidated Statements of Income (Detail) - USD ($) $ in Millions	12 Months Ended
	May 31, 2021	May 31, 2020	May 31, 2019
Foreign Exchange Contract | Other (income) expense, net | Derivatives not designated as hedging instruments
Derivative Instruments, Gain (Loss) [Line Items]
AMOUNT OF GAIN (LOSS) RECOGNIZED IN INCOME ON DERIVATIVES	$ (150)	$ 76	$ 166
Embedded derivatives | Other (income) expense, net | Derivatives not designated as hedging instruments
Derivative Instruments, Gain (Loss) [Line Items]
AMOUNT OF GAIN (LOSS) RECOGNIZED IN INCOME ON DERIVATIVES	(17)	(1)	7
Derivatives designated as cash flow hedges
Derivative Instruments, Gain (Loss) [Line Items]
AMOUNT OF GAIN (LOSS) RECOGNIZED IN OTHER COMPREHENSIVE INCOME (LOSS) ON DERIVATIVES	(782)	402	577
AMOUNT OF GAIN (LOSS) RECLASSIFIED FROM ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) INTO INCOME	45	519	76
Derivatives designated as cash flow hedges | Foreign Exchange Contract | Revenue
Derivative Instruments, Gain (Loss) [Line Items]
AMOUNT OF GAIN (LOSS) RECOGNIZED IN OTHER COMPREHENSIVE INCOME (LOSS) ON DERIVATIVES	(61)	28	14
AMOUNT OF GAIN (LOSS) RECLASSIFIED FROM ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) INTO INCOME	45	(17)	(5)
Derivatives designated as cash flow hedges | Foreign Exchange Contract | Cost of sales
Derivative Instruments, Gain (Loss) [Line Items]
AMOUNT OF GAIN (LOSS) RECOGNIZED IN OTHER COMPREHENSIVE INCOME (LOSS) ON DERIVATIVES	(563)	283	405
AMOUNT OF GAIN (LOSS) RECLASSIFIED FROM ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) INTO INCOME	51	364	53
Derivatives designated as cash flow hedges | Foreign Exchange Contract | Demand creation expense
Derivative Instruments, Gain (Loss) [Line Items]
AMOUNT OF GAIN (LOSS) RECOGNIZED IN OTHER COMPREHENSIVE INCOME (LOSS) ON DERIVATIVES	5	1	2
AMOUNT OF GAIN (LOSS) RECLASSIFIED FROM ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) INTO INCOME	3	(2)	0
Derivatives designated as cash flow hedges | Foreign Exchange Contract | Other (income) expense, net
Derivative Instruments, Gain (Loss) [Line Items]
AMOUNT OF GAIN (LOSS) RECOGNIZED IN OTHER COMPREHENSIVE INCOME (LOSS) ON DERIVATIVES	(163)	90	156
AMOUNT OF GAIN (LOSS) RECLASSIFIED FROM ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) INTO INCOME	(47)	181	35
Derivatives designated as cash flow hedges | Interest rate swaps | Interest (income) expense, net
Derivative Instruments, Gain (Loss) [Line Items]
AMOUNT OF GAIN (LOSS) RECOGNIZED IN OTHER COMPREHENSIVE INCOME (LOSS) ON DERIVATIVES	0	0	0
AMOUNT OF GAIN (LOSS) RECLASSIFIED FROM ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) INTO INCOME	$ (7)	$ (7)	$ (7)