Leases - Schedule of Supplemental Balance Sheet Information Related to Leases (Details) - USD ($) $ in Millions	May 31, 2023	May 31, 2022
Operating leases:
Operating lease right-of-use assets, net	$ 17,347	$ 16,613
Current portion of operating lease liabilities	2,390	2,443
Operating lease liabilities	15,363	14,487
Total operating lease liabilities	17,753	16,930
Finance leases:
Net property and equipment	$ 821	$ 455
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	$ 75	$ 32
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	$ 725	$ 436
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	$ 800	$ 468
Weighted-average remaining lease term
Operating leases	9 years 6 months	9 years 9 months 18 days
Finance leases	27 years 6 months	30 years 9 months 18 days
Weighted-average discount rate
Operating leases	3.42%	2.85%
Finance leases	4.22%	3.45%