LEASES, OTHER COMMITMENTS AND CERTAIN CONTINGENCIES Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	May 31, 2023	May 31, 2022
Leases Other Commitments And Certain Contingencies Disclosure [Line Items]
Operating lease expenses	$ 873	$ 766
Sublease income	$ 11	12
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Other non-current assets
Right of use assets operating leases	$ 4,600
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Other current liabilities
Operating lease liabilities, current	$ 865
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Other non-current liabilities
Operating lease liabilities, non-current	$ 4,000
Right of use asset in exchange for operating lease obligation	2,000
Cash paid for operating lease liabilities	$ 894	$ 808
Operating leases weighted average remaining lease term	8 years
Operating lease obligations, weighted average discount rate	4.00%
Additional operating lease commitments	$ 9,100
Minimum [Member]
Leases Other Commitments And Certain Contingencies Disclosure [Line Items]
Operating leases remaining terms	1 year
Operating leases not yet commenced, terms	3 years
Maximum [Member]
Leases Other Commitments And Certain Contingencies Disclosure [Line Items]
Operating leases remaining terms	15 years
Operating leases not yet commenced, terms	15 years