RESTRUCTURING ACTIVITIES Narrative (Details) - USD ($) $ in Millions	3 Months Ended
Aug. 31, 2020	Aug. 31, 2019
Restructuring reserve [Line Items]
Restructuring expenses	$ 174	$ 78
Fiscal 2019 Oracle Restructuring [Member]
Restructuring reserve [Line Items]
Restructuring expenses	$ 172	$ 77

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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