Leases - Schedule of Supplemental Balance Sheet Information Related to Leases (Details) - USD ($) $ in Millions	May 31, 2024	May 31, 2023
Operating leases:
Operating lease right-of-use assets, net	$ 17,115	$ 17,347
Current portion of operating lease liabilities	2,463	2,390
Operating lease liabilities	15,053	15,363
Total operating lease liabilities	17,516	17,753
Finance leases:
Net property and equipment	$ 373	$ 821
Finance Lease, Right of Use Asset, Statement of Financial Position [Extensible List]	Net Book Value at May 31,	Net Book Value at May 31,
Current portion of long-term debt	$ 18	$ 75
Finance Lease, Liability, Current Statement of Financial Position [Extensible List]	LONG-TERM DEBT, LESS CURRENT PORTION	LONG-TERM DEBT, LESS CURRENT PORTION
Long-term debt, less current portion	$ 413	$ 725
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	LONG-TERM DEBT, LESS CURRENT PORTION	LONG-TERM DEBT, LESS CURRENT PORTION
Total finance lease liabilities	$ 431	$ 800
Weighted-average remaining lease term
Operating leases	9 years 6 months	9 years 6 months
Finance leases	29 years 9 months 18 days	27 years 6 months
Weighted-average discount rate
Operating leases	3.79%	3.42%
Finance leases	3.63%	4.22%