RESTRUCTURING ACTIVITIES Narrative (Details) - USD ($) $ in Millions	12 Months Ended
May 31, 2021	May 31, 2020	May 31, 2019
Restructuring reserve [Line Items]
Restructuring expenses	$ 431	$ 250	$ 443
Fiscal 2019 Oracle Restructuring [Member]
Restructuring reserve [Line Items]
Restructuring expenses	430	$ 261
Restructuring and related costs recorded to date	$ 1,200

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.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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