Accumulated Other Comprehensive Income - Reclassification out of AOCI (Detail) - USD ($) $ in Millions	3 Months Ended
	Aug. 31, 2018	Aug. 31, 2017
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Revenues	$ 9,948	$ 9,070
Cost of sales	(5,551)	(5,108)
Other expense (income), net	(53)	(18)
Interest expense (income), net	(11)	(16)
Income before income taxes	1,270	1,072
Tax (expense) benefit	(178)	(122)
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income into Income
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
NET INCOME	(44)	30
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income into Income | Gain (losses) on cash flow hedges
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Income before income taxes	(50)	47
Tax (expense) benefit	(1)	1
NET INCOME	(51)	48
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income into Income | Gain (losses) on cash flow hedges | Foreign exchange forwards and options
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Revenues	5	2
Cost of sales	(44)	45
Other expense (income), net	(9)	2
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income 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)	(2)
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income into Income | Other
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Other expense (income), net	7	(18)
Income before income taxes	7	(18)
Tax (expense) benefit	0	0
NET INCOME	$ 7	$ (18)