Leases - Schedule of Supplemental Balance Sheet Information Related to Leases (Details) - USD ($) $ in Millions	May 31, 2020	Jun. 01, 2019	May 31, 2019
Operating leases:
Operating lease right-of-use assets, net	$ 13,917	$ 14,100
Current portion of operating lease liabilities	1,923
Operating lease liabilities	12,195
Total operating lease liabilities	14,118	$ 14,200
Finance leases:
Net property and equipment	$ 480
Finance Lease, Right of Use Asset, Statement of Financial Position [Extensible List]	us-gaap:PropertyPlantAndEquipmentNet
Current portion of long-term debt	$ 51
Finance Lease, Liability, Current Statement of Financial Position [Extensible List]	us-gaap:LongTermDebtAndCapitalLeaseObligations
Long-term debt, less current portion	$ 434
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	us-gaap:LongTermDebtAndCapitalLeaseObligations
Total finance lease liabilities	$ 485		$ 62
Weighted-average remaining lease term
Operating leases	9 years 10 months 24 days
Finance leases	32 years
Weighted-average discount rate
Operating leases	3.19%
Finance leases	3.58%