Leases - Future Lease Payments for Operating and Finance Leases (Details) - USD ($) $ in Millions	May 31, 2020	Sep. 01, 2019
Finance lease
2020 (Remaining period)	$ 24
2021	95
2022	93
2023	93
2024	92
2025	90
Later	1,212
Total undiscounted minimum lease payments	1,699
Less: Present value discount	(644)
Lease liability	1,055
Operating lease
2020 (Remaining period)	859
2021	3,390
2022	3,244
2023	3,091
2024	2,943
2025	2,770
Later	15,057
Total undiscounted minimum lease payments	31,354
Less: Present value discount	(7,123)
Operating lease liability	$ 24,231	$ 24,000