Related Party Transactions - Additional Information (Details) - USD ($) $ in Millions |
12 Months Ended | ||
---|---|---|---|
Aug. 31, 2021 |
Aug. 31, 2020 |
Aug. 31, 2019 |
|
Corporate Joint Venture | |||
Related Party Transaction [Line Items] | |||
Purchases from joint ventures | $ 20 | $ 11 | $ 15 |