Share-based Compensation - Deferred Stock Units - Additional Information (Details) - Deferred stock units ("DSUs") - Non-employee Directors - shares	12 Months Ended
Aug. 31, 2023	Aug. 31, 2022	Aug. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted (in shares)	21,438	20,876	28,042
Class A Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, equity instruments other than options, number of shares per stock unit	1

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details