Income Taxes (Income (Loss) From Continuing Operations Before Income Tax Expense) (Details) - USD ($) $ in Millions	12 Months Ended
	Aug. 31, 2021	Aug. 31, 2020	Aug. 31, 2019
Income Tax Disclosure [Abstract]
Domestic	$ (271)	$ (452)	$ (416)
Foreign	1,215	713	867
Income before income tax	$ 944	$ 261	$ 451