PROPERTY, PLANT AND EQUIPMENT (Details) - USD ($) $ in Millions	12 Months Ended
	May 31, 2016	May 31, 2015
Property, Plant and Equipment, Net [Abstract]
Computer, network, machinery and equipment	$ 3,927	$ 3,345
Buildings and improvements	2,754	2,721
Furniture, fixtures and other	574	547
Land	744	589
Construction in progress	97	93
Total property, plant and equipment	8,096	7,295
Accumulated depreciation	(4,096)	(3,609)
Total property, plant and equipment, net	$ 4,000	$ 3,686
Minimum
Property, Plant And Equipment [Line Items]
Estimated Useful Lives	1 year
Maximum
Property, Plant And Equipment [Line Items]
Estimated Useful Lives	40 years
Computer, network, machinery and equipment | Minimum
Property, Plant And Equipment [Line Items]
Estimated Useful Lives	1 year
Computer, network, machinery and equipment | Maximum
Property, Plant And Equipment [Line Items]
Estimated Useful Lives	5 years
Buildings and improvements | Minimum
Property, Plant And Equipment [Line Items]
Estimated Useful Lives	1 year
Buildings and improvements | Maximum
Property, Plant And Equipment [Line Items]
Estimated Useful Lives	40 years
Furniture, fixtures and other | Minimum
Property, Plant And Equipment [Line Items]
Estimated Useful Lives	5 years
Furniture, fixtures and other | Maximum
Property, Plant And Equipment [Line Items]
Estimated Useful Lives	15 years