INCOME TAXES - Components of Deferred Tax Liabilities and Assets Continued (Details) - USD ($) $ in Millions	May 31, 2021	May 31, 2020
Components of Deferred Tax Assets and Liabilities [Abstract]
Non-current deferred tax assets	$ 13,636	$ 3,252
Non-current deferred tax liabilities	(7,864)	(41)
Net deferred tax assets	$ 5,772	$ 3,211