PROPERTY, PLANT AND EQUIPMENT (Details) - USD ($) $ in Millions	12 Months Ended
	May 31, 2020	May 31, 2019
Property, Plant And Equipment [Line Items]
Computer, network, machinery and equipment	$ 7,757	$ 7,214
Buildings and improvements	4,394	4,253
Furniture, fixtures and other	509	554
Land	885	896
Construction in progress	280	158
Total property, plant and equipment	13,825	13,075
Accumulated depreciation	(7,581)	(6,823)
Total property, plant and equipment, net	$ 6,244	$ 6,252
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