Leases - Other Supplemental Information (Details) - USD ($) $ in Millions	9 Months Ended
	May 31, 2023	May 31, 2022
Cash paid for amounts included in the measurement of lease obligations
Operating cash flows from operating leases	$ 2,668	$ 2,515
Operating cash flows from finance leases	35	35
Financing cash flows from finance leases	38	32
Total	2,741	2,582
Right-of-use assets obtained in exchange for new lease obligations
Operating leases	1,773	1,380
Finance leases	23	11
Total	$ 1,796	$ 1,391