Accounts Payable and Accrued Expenses (Details) - USD ($) $ in Millions	Nov. 30, 2017	Aug. 31, 2017
Accounts Payable and Accrued Liabilities, Current [Abstract]
Accounts payable	$ 1,209	$ 1,333
Property, plant, and equipment payables	1,314	1,018
Salaries, wages, and benefits	460	603
Income and other taxes	233	163
Customer advances	198	197
Other	352	350
Total accounts payable and accrued expenses	$ 3,766	$ 3,664