Leases - Other Supplemental Information (Details) - USD ($) $ in Millions	6 Months Ended
	Feb. 29, 2024	Feb. 28, 2023
Cash paid for amounts included in the measurement of lease obligations
Operating cash flows from operating leases	$ 1,849	$ 1,720
Operating cash flows from finance leases	25	22
Financing cash flows from finance leases	33	21
Total	1,906	1,763
Right-of-use assets obtained in exchange for new lease obligations
Operating leases	993	1,135
Finance leases	57	18
Total	$ 1,049	$ 1,154