DEFERRED REVENUES (Details) (USD $) In Millions, unless otherwise specified	Feb. 28, 2013	May 31, 2012
Deferred Revenues [Line Items]
Deferred revenues, current	$ 6,278	$ 7,035
Deferred revenues, non-current (in other non-current liabilities)	305	296
Total deferred revenues	6,583	7,331
Software license updates and product support [Member]
Deferred Revenues [Line Items]
Deferred revenues, current	4,981	5,565
Hardware systems support and other [Member]
Deferred Revenues [Line Items]
Deferred revenues, current	613	714
Services [Member]
Deferred Revenues [Line Items]
Deferred revenues, current	348	403
New software licenses and cloud software subscriptions [Member]
Deferred Revenues [Line Items]
Deferred revenues, current	$ 336	$ 353