DEFERRED REVENUES (Details) - USD ($) $ in Millions	May 31, 2020	May 31, 2019
Deferred Revenues [Line Items]
Deferred revenues, current	$ 8,002	$ 8,374
Deferred revenues, non-current (in other non-current liabilities)	597	669
Total deferred revenues	8,599	9,043
Cloud services and license support [Member] | Cloud and License [Member]
Deferred Revenues [Line Items]
Deferred revenues, current	6,996	7,340
Hardware [Member] | Hardware [Member]
Deferred Revenues [Line Items]
Deferred revenues, current	613	635
Services [Member] | Services [Member]
Deferred Revenues [Line Items]
Deferred revenues, current	365	360
Cloud license and on-premise license [Member] | Cloud and License [Member]
Deferred Revenues [Line Items]
Deferred revenues, current	$ 28	$ 39