INCOME TAXES Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	May 31, 2023	May 31, 2022	May 31, 2021
Income Tax Examination [Line Items]
Total net tax benefit			$ 2,300
Undistributed earnings and other outside basis temporary differences of investments in foreign subsidiaries	$ 11,000
Potential net deferred tax liability related to other outside basis temporary differences	2,000
Deferred Tax Assets, Net [Abstract]
Net deferred tax assets	6,454	$ 6,751
Valuation allowance	1,940	1,742
Operating Loss Carryforwards [Abstract]
Capital loss carryforwards	141
Tax Credit Carryforwards [Abstract]
Tax credit carryforwards subject to limitation on utilization	1,400
Tax credit carryforwards not subject to expiration dates	933
Tax credit carryforwards subject to expiration dates	438
Unrecognized Tax Benefits (Narrative) [Abstract]
Unrecognized tax benefits that would affect our effective tax rate if recognized	3,900	4,300	4,400
Interest and penalties related to uncertain tax positions recognized in our provision for income taxes	111	93	$ 166
Interest and penalties related to uncertain tax positions accrued	$ 1,700	$ 1,600
Earliest Tax Year [Member]
Tax Credit Carryforwards [Abstract]
Tax credit carryforward expiration dates	May 31, 2024
Latest Tax Year [Member]
Tax Credit Carryforwards [Abstract]
Tax credit carryforward expiration dates	May 31, 2043
Federal [Member]
Operating Loss Carryforwards [Abstract]
Net operating loss carryforwards	$ 380
Federal net operating loss carryforwards not subject to expiration	76
Federal [Member] | Expire in various years between fiscal 2024 and fiscal 2038 [Member]
Operating Loss Carryforwards [Abstract]
Net operating loss carryforwards	$ 304
Federal [Member] | Earliest Tax Year [Member]
Operating Loss Carryforwards [Abstract]
Operating loss carryforwards expiration date	May 31, 2024
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	$ 2,200
Capital loss carryforwards	$ 314
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, 2024
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, 2043
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	61
Unrecognized Tax Benefits (Narrative) [Abstract]
Reasonably possible decrease in the next 12 months in gross unrecognized, net of offsetting tax benefits	262
Reasonably possible increase in the next 12 months in gross unrecognized, net of offsetting tax benefits	111
Reasonably possible decrease in the next 12 months in gross unrecognized tax benefits	767
Reasonably possible increase in the next 12 months in gross unrecognized tax benefits	$ 637
Foreign [Member] | Earliest Tax Year [Member]
Operating Loss Carryforwards [Abstract]
Operating loss carryforwards expiration date	May 31, 2024
Foreign [Member] | Latest Tax Year [Member]
Operating Loss Carryforwards [Abstract]
Operating loss carryforwards expiration date	May 31, 2039
Domestic [Member]
Operating Loss Carryforwards [Abstract]
Capital loss carryforwards expiration date	May 31, 2026
Unrecognized Tax Benefits (Narrative) [Abstract]
Reasonably possible decrease in the next 12 months in gross unrecognized, net of offsetting tax benefits	$ 442
Reasonably possible decrease in the next 12 months in gross unrecognized tax benefits	$ 538