LEASES, OTHER COMMITMENTS AND CERTAIN CONTINGENCIES - Supplemental Balance Sheet Information Related to Leases (Details) - USD ($) $ in Millions	May 31, 2026	May 31, 2025
Operating leases:
Operating lease ROU assets	$ 29,690	$ 13,145
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Operating lease ROU assets	Operating lease ROU assets
Operating lease liabilities:
Operating lease liabilities, current	$ 3,542	$ 1,914
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Other Liabilities, Current	Other Liabilities, Current
Operating lease liabilities, non-current	$ 26,648	$ 11,536
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Operating lease liabilities, non-current	Operating lease liabilities, non-current
Total operating lease liabilities	$ 30,190	$ 13,450
Weighted average remaining lease term	12 years	10 years
Weighted average discount rate	5.70%	5.30%
Finance leases:
Finance leases, ROU assets	$ 7,464	$ 2,874
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Property, Plant and Equipment, Net	Property, Plant and Equipment, Net
Finance lease liabilities:
Finance lease liabilities, current	$ 620	$ 257
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Other Liabilities, Current	Other Liabilities, Current
Finance lease liabilities, non-current	$ 7,081	$ 2,677
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other Liabilities, Noncurrent	Other Liabilities, Noncurrent
Total finance lease liabilities	$ 7,701	$ 2,934
Weighted average remaining lease term	14 years	15 years
Weighted average discount rate	5.70%	5.50%