Income Taxes (Income Tax Expense (Benefit)) (Details) - USD ($) $ in Millions	12 Months Ended
	Aug. 31, 2021	Aug. 31, 2020	Aug. 31, 2019
Current:
Domestic - federal	$ 7	$ (3)	$ (24)
Domestic - state	3	1	1
Foreign	252	180	177
Total current	262	178	154
Deferred:
Domestic - federal	2	(10)	(8)
Domestic - state	0	0	(2)
Foreign	(18)	36	18
Total deferred	(16)	26	8
Total income tax expense	$ 246	$ 204	$ 162