LEASES AND OTHER COMMITMENTS - Supplemental Balance Sheet Information Related to Leases (Details) - USD ($) $ in Millions	Nov. 30, 2025	May 31, 2025
Operating leases:
Operating lease ROU assets	$ 18,393	$ 13,145
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Other Assets, Noncurrent	Other Assets, Noncurrent
Operating lease liabilities:
Operating lease liabilities, current	$ 2,368	$ 1,914
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Other Liabilities, Current	Other Liabilities, Current
Operating lease liabilities, non-current	$ 16,311	$ 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	$ 18,679	$ 13,450
Finance leases:
Finance lease ROU assets	4,875	2,874
Finance lease liabilities:
Finance lease liabilities, current	400	257
Finance lease liabilities, non-current	4,576	2,677
Total finance lease liabilities	$ 4,976	$ 2,934