INCOME TAXES Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	May 31, 2022	May 31, 2021	May 31, 2020
Income Tax Examination [Line Items]
Total net tax benefit		$ 2,300
Undistributed earnings and other outside basis temporary differences of investments in foreign subsidiaries	$ 7,900
Potential net deferred tax liability related to other outside basis temporary differences	1,500
Deferred Tax Assets, Net [Abstract]
Net deferred tax assets	6,751	5,772
Valuation allowance	1,742	1,526
Operating Loss Carryforwards [Abstract]
Capital loss carryforwards		193
Tax Credit Carryforwards [Abstract]
Tax credit carryforwards subject to limitation on utilization	1,300
Tax credit carryforwards not subject to expiration dates	854
Tax credit carryforwards subject to expiration dates	407
Unrecognized Tax Benefits (Narrative) [Abstract]
Unrecognized tax benefits that would affect our effective tax rate if recognized	4,300	4,400	$ 4,300
Interest and penalties related to uncertain tax positions recognized in our provision for income taxes	93	166	$ 202
Interest and penalties related to uncertain tax positions accrued	$ 1,600	1,600
Earliest Tax Year [Member]
Tax Credit Carryforwards [Abstract]
Tax credit carryforward expiration dates	May 31, 2023
Latest Tax Year [Member]
Tax Credit Carryforwards [Abstract]
Tax credit carryforward expiration dates	May 31, 2042
Federal [Member]
Operating Loss Carryforwards [Abstract]
Net operating loss carryforwards	$ 446
Federal net operating loss carryforwards not subject to expiration	74
Federal [Member] | Expire in various years between fiscal 2022 and fiscal 2038 [Member]
Operating Loss Carryforwards [Abstract]
Net operating loss carryforwards	$ 372
Federal [Member] | Earliest Tax Year [Member]
Operating Loss Carryforwards [Abstract]
Operating loss carryforwards expiration date	May 31, 2023
Federal [Member] | Latest Tax Year [Member]
Operating Loss Carryforwards [Abstract]
Operating loss carryforwards expiration date	May 31, 2038
State [Member]
Operating Loss Carryforwards [Abstract]
Net operating loss carryforwards	$ 1,800
Capital loss carryforwards expiration date	May 31, 2026
Capital loss carryforwards		$ 366
State [Member] | Earliest Tax Year [Member]
Operating Loss Carryforwards [Abstract]
Capital loss carryforwards expiration date	May 31, 2026
Operating loss carryforwards expiration date	May 31, 2023
State [Member] | Latest Tax Year [Member]
Operating Loss Carryforwards [Abstract]
Capital loss carryforwards expiration date	May 31, 2036
Operating loss carryforwards expiration date	May 31, 2042
Foreign [Member]
Operating Loss Carryforwards [Abstract]
Net operating loss carryforwards	$ 1,900
Foreign net operating loss carryforwards not subject to expiration	1,800
Foreign net operating loss carryforwards subject to expiration	53
Unrecognized Tax Benefits (Narrative) [Abstract]
Reasonably possible decrease in the next 12 months in gross unrecognized, net of offsetting tax benefits	109
Reasonably possible increase in the next 12 months in gross unrecognized, net of offsetting tax benefits	227
Reasonably possible decrease in the next 12 months in gross unrecognized tax benefits	287
Reasonably possible increase in the next 12 months in gross unrecognized tax benefits	$ 869
Foreign [Member] | Earliest Tax Year [Member]
Operating Loss Carryforwards [Abstract]
Operating loss carryforwards expiration date	May 31, 2023
Foreign [Member] | Latest Tax Year [Member]
Operating Loss Carryforwards [Abstract]
Operating loss carryforwards expiration date	May 31, 2041
Domestic [Member]
Unrecognized Tax Benefits (Narrative) [Abstract]
Reasonably possible decrease in the next 12 months in gross unrecognized, net of offsetting tax benefits	$ 825
Reasonably possible decrease in the next 12 months in gross unrecognized tax benefits	$ 994