RESTRUCTURING ACTIVITIES Narrative (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Feb. 28, 2021	Feb. 29, 2020	Feb. 28, 2021	Feb. 29, 2020
Restructuring reserve [Line Items]
Restructuring expenses	$ 66	$ 60	$ 337	$ 181
Fiscal 2019 Oracle Restructuring [Member]
Restructuring reserve [Line Items]
Restructuring expenses			$ 335	$ 186

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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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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