DEFERRED REVENUES (Details) - USD ($) $ in Millions	Aug. 31, 2020	May 31, 2020
Deferred Revenues [Line Items]
Deferred revenues, current	$ 9,875	$ 8,002
Deferred revenues, non-current (in other non-current liabilities)	671	597
Total deferred revenues	10,546	8,599
Cloud services and license support [Member] | Cloud and License [Member]
Deferred Revenues [Line Items]
Deferred revenues, current	8,733	6,996
Hardware [Member] | Hardware [Member]
Deferred Revenues [Line Items]
Deferred revenues, current	699	613
Services [Member] | Services [Member]
Deferred Revenues [Line Items]
Deferred revenues, current	403	365
Cloud license and on-premise license [Member] | Cloud and License [Member]
Deferred Revenues [Line Items]
Deferred revenues, current	$ 40	$ 28