Accumulated Other Comprehensive Income - Reclassification out of AOCI (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Feb. 28, 2019	Feb. 28, 2018	Feb. 28, 2019	Feb. 28, 2018
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Revenues	$ 9,611	$ 8,984	$ 28,933	$ 26,608
Cost of sales	5,272	5,046	16,092	15,030
Other (income) expense, net	55	1	50	(35)
Interest expense (income), net	(12)	(13)	(37)	(42)
Income before income taxes	1,291	1,159	3,558	3,110
Tax (expense) benefit	(190)	(2,080)	(518)	(2,314)
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
NET INCOME	45	(66)	16	(65)
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income | Gain (losses) on cash flow hedges
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Income before income taxes	51	(48)	13	(31)
Tax (expense) benefit	(3)	(1)	(5)	2
NET INCOME	48	(49)	8	(29)
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income | Gain (losses) on cash flow hedges | Foreign exchange forwards and options
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Revenues	1	9	9	24
Cost of sales	(34)	41	0	17
Other (income) expense, net	18	(15)	9	(33)
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income | Gain (losses) on cash flow hedges | Interest rate swaps
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Interest expense (income), net	(2)	(1)	(5)	(5)
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income | Other
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Other (income) expense, net	(3)	(16)	8	(35)
Income before income taxes	(3)	(16)	8	(35)
Tax (expense) benefit	0	(1)	0	(1)
NET INCOME	$ (3)	$ (17)	$ 8	$ (36)