Leases - Schedule of Supplemental Balance Sheet Information Related to Leases (Details) - USD ($) $ in Millions	Feb. 29, 2020	Jun. 01, 2019
Operating leases:
Operating lease right-of-use assets, net	$ 13,981	$ 14,100
Current portion of operating lease liabilities	1,902
Operating lease liabilities	12,232
Total operating lease liabilities	14,134	$ 14,200
Finance Leases:
Net property and equipment	$ 464
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	us-gaap:PropertyPlantAndEquipmentNet
Current portion of long-term debt	$ 35
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List]	us-gaap:LongTermDebtAndCapitalLeaseObligations
Long-term debt, less current portion	$ 437
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	us-gaap:LongTermDebtAndCapitalLeaseObligations
Total finance lease liabilities	$ 472
Weighted-average remaining lease term
Operating leases	10 years
Finance leases	33 years 3 months 18 days
Weighted-average discount rate
Operating leases	3.23%
Finance leases	3.59%