DEFERRED REVENUES (Details) - USD ($) $ in Millions	Feb. 29, 2016	May. 31, 2015
Deferred Revenues [Line Items]
Deferred revenues, current	$ 6,912	$ 7,245
Deferred revenues, non-current (in other non-current liabilities)	485	393
Total deferred revenues	7,397	7,638
Software license updates and product support [Member]
Deferred Revenues [Line Items]
Deferred revenues, current	5,239	5,635
Cloud SaaS, PaaS and IaaS [Member]
Deferred Revenues [Line Items]
Deferred revenues, current	642	404
Hardware support and other [Member]
Deferred Revenues [Line Items]
Deferred revenues, current	618	703
Services [Member]
Deferred Revenues [Line Items]
Deferred revenues, current	322	379
New software licenses [Member]
Deferred Revenues [Line Items]
Deferred revenues, current	$ 91	$ 124