Leases - Future Lease Payments for Operating and Finance Leases (Details) - USD ($) $ in Millions	Feb. 28, 2023	Aug. 31, 2022
Finance lease
2023 (Remaining period)	$ 53
2024	105
2025	101
2026	98
2027	97
2028	88
Later	958
Total undiscounted minimum lease payments	1,501
Less: Present value discount	516
Lease liability	984	$ 936
Operating lease
2023 (Remaining period)	1,805
2024	3,555
2025	3,450
2026	3,361
2027	3,266
2028	3,108
Later	12,980
Total undiscounted minimum lease payments	31,524
Less: Present value discount	6,990
Lease liability	$ 24,534	$ 23,803