Accumulated Other Comprehensive Income (Loss) - Reclassification out of AOCI (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Nov. 30, 2021	Nov. 30, 2020	Nov. 30, 2021	Nov. 30, 2020
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Revenues	$ 11,357	$ 11,243	$ 23,605	$ 21,837
Cost of sales	(6,144)	(6,396)	(12,696)	(12,249)
Demand creation expense	(1,017)	(729)	(1,935)	(1,406)
Interest expense (income), net	(55)	(70)	(112)	(135)
Other (income) expense, net	102	(54)	141	(40)
Income before income taxes	1,501	1,456	3,607	3,171
Tax benefit (expense)	(164)	(205)	(396)	(402)
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	(25)	41	(109)	165
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	0	1	0	1
Income before income taxes	0	1	0	1
Tax benefit (expense)	0	0	0	0
Gain (loss), net of tax	0	1	0	1
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	(31)	43	(128)	178
Tax benefit (expense)	1	(4)	9	(7)
Gain (loss), net of tax	(30)	39	(119)	171
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	(20)	26	(41)	40
Cost of sales	(30)	31	(96)	145
Demand creation expense	0	0	1	1
Other (income) expense, net	20	(13)	11	(5)
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	(1)	(1)	(3)	(3)
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	14	(7)
Income before income taxes	8	1	14	(7)
Tax benefit (expense)	(3)	0	(4)	0
Gain (loss), net of tax	$ 5	$ 1	$ 10	$ (7)