Accumulated Other Comprehensive Income (Loss) - Reclassification out of AOCI (Details) - USD ($) $ in Millions	3 Months Ended
	Aug. 31, 2020	Aug. 31, 2019
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Revenues	$ 10,594	$ 10,660
Cost of sales	(5,853)	(5,789)
Demand creation expense	(677)	(1,018)
Other (income) expense, net	14	33
Interest expense (income), net	(65)	(15)
Income before income taxes	1,715	1,561
Tax benefit (expense)	(197)	(194)
AMOUNT OF GAIN (LOSS) RECLASSIFIED FROM ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) INTO INCOME
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Gain (loss), net of tax	124	128
Gain (losses) on cash flow hedges | AMOUNT OF GAIN (LOSS) RECLASSIFIED FROM ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) INTO INCOME
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Income before income taxes	135	127
Tax benefit (expense)	(3)	0
Gain (loss), net of tax	132	127
Gain (losses) on cash flow hedges | Foreign exchange forwards and options | AMOUNT OF GAIN (LOSS) RECLASSIFIED FROM ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) INTO INCOME
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Revenues	14	8
Cost of sales	114	75
Demand creation expense	1	0
Other (income) expense, net	8	46
Gain (losses) on cash flow hedges | Interest rate swaps | AMOUNT OF GAIN (LOSS) RECLASSIFIED FROM ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) INTO INCOME
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Interest expense (income), net	(2)	(2)
OTHER | AMOUNT OF GAIN (LOSS) RECLASSIFIED FROM ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) INTO INCOME
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Other (income) expense, net	(8)	1
Income before income taxes	(8)	1
Tax benefit (expense)	0	0
Gain (loss), net of tax	$ (8)	$ 1