Leases - Schedule of Lease Assets and Lease Liabilities included on Consolidated Balance Sheets (Details) - USD ($) $ in Millions	Aug. 31, 2023	Aug. 31, 2022
Assets
Operating lease assets	$ 367	$ 500
Finance lease assets	310	368
Total lease assets	677	868
Current
Operating lease liabilities	$ 104	$ 119
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Accrued expenses	Accrued expenses
Finance lease liabilities	$ 74	$ 120
Non-current
Operating lease liabilities	$ 269	$ 417
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other liabilities	Other liabilities
Finance lease liabilities	$ 212	$ 198
Total lease liabilities	659	854
Operating lease assets, accumulated amortization	309	249
Finance lease assets, accumulated amortization	$ 199	$ 110