Leases - Other Supplemental Information (Details) - USD ($) $ in Millions	6 Months Ended
	Feb. 28, 2025	Feb. 29, 2024
Cash paid for amounts included in the measurement of lease obligations
Operating cash flows from operating leases	$ 1,798	$ 1,849
Operating cash flows from finance leases	25	25
Financing cash flows from finance leases	41	33
Total	1,864	1,906
Right-of-use assets obtained in exchange for new lease obligations
Operating leases	170	993
Finance leases	18	57
Total	$ 189	$ 1,049