ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) - Reclassification out of AOCI (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Nov. 30, 2022	Nov. 30, 2021	Nov. 30, 2022	Nov. 30, 2021
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Other (income) expense, net	$ 79	$ 102	$ 225	$ 141
Revenues	13,315	11,357	26,002	23,605
Cost of sales	(7,604)	(6,144)	(14,676)	(12,696)
Demand creation expense	(1,102)	(1,017)	(2,045)	(1,935)
Interest expense (income), net	(16)	(55)	(29)	(112)
Income before income taxes	1,650	1,501	3,478	3,607
Tax (expense) benefit	(319)	(164)	(679)	(396)
AMOUNT OF GAIN (LOSS) RECLASSIFIED FROM ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) INTO INCOME
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Total net gain (loss) reclassified for the period	(40)	(25)	83	(109)
Gains (losses) on foreign currency translation adjustment | 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	(325)	0	(371)	0
Income before income taxes	(325)	0	(371)	0
Tax (expense) benefit	16	0	16	0
Total net gain (loss) reclassified for the period	(309)	0	(355)	0
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]
Other (income) expense, net	125	20	207	11
Revenues	4	(20)	(5)	(41)
Cost of sales	173	(30)	282	(96)
Demand creation expense	(2)	0	(3)	1
Interest expense (income), net	(2)	(1)	(4)	(3)
Income before income taxes	298	(31)	477	(128)
Tax (expense) benefit	(35)	1	(53)	9
Total net gain (loss) reclassified for the period	263	(30)	424	(119)
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	9	8	20	14
Income before income taxes	9	8	20	14
Tax (expense) benefit	(3)	(3)	(6)	(4)
Total net gain (loss) reclassified for the period	$ 6	$ 5	$ 14	$ 10