Leases - Other Supplemental Information (Details) - USD ($) $ in Millions	3 Months Ended
	Nov. 30, 2023	Nov. 30, 2022
Cash paid for amounts included in the measurement of lease obligations
Operating cash flows from operating leases	$ 924	$ 828
Operating cash flows from finance leases	13	11
Financing cash flows from finance leases	14	10
Total	951	849
Right-of-use assets obtained in exchange for new lease obligations
Operating leases	679	602
Finance leases	5	1
Total	$ 685	$ 603