Leases - Future Lease Payments for Operating and Finance Leases (Details) - USD ($) $ in Millions	May 31, 2023	Aug. 31, 2022
Finance lease
2023 (Remaining period)	$ 27
2024	106
2025	102
2026	100
2027	98
2028	89
Later	963
Total undiscounted minimum lease payments	1,486
Less: Present value discount	504
Lease liability	982	$ 936
Operating lease
2023 (Remaining period)	920
2024	3,632
2025	3,543
2026	3,452
2027	3,361
2028	3,194
Later	13,703
Total undiscounted minimum lease payments	31,805
Less: Present value discount	7,268
Lease liability	$ 24,537	$ 23,803