DEFERRED REVENUES (Details) (USD $) In Millions, unless otherwise specified	May 31, 2013	May 31, 2012
Deferred Revenues [Line Items]
Deferred revenues, current	$ 7,118	$ 7,035
Deferred revenues, non-current (in other non-current liabilities)	312	296
Total deferred revenues	7,430	7,331
Software license updates and product support [Member]
Deferred Revenues [Line Items]
Deferred revenues, current	5,705	5,565
Hardware systems support and other [Memeber]
Deferred Revenues [Line Items]
Deferred revenues, current	706	714
Services [Member]
Deferred Revenues [Line Items]
Deferred revenues, current	381	403
New software licenses and cloud software subscriptions [Member]
Deferred Revenues [Line Items]
Deferred revenues, current	$ 326	$ 353