Concentration of Risk and Segment Data (Foreign Source Revenue) (Details) |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Feb. 28, 2022 |
Feb. 28, 2021 |
Feb. 28, 2022 |
Feb. 28, 2021 |
|
| Foreign source revenue | Net revenue | Foreign source revenue | ||||
| Concentration Risk [Line Items] | ||||
| Concentration risk | 83.50% | 84.70% | 84.20% | 84.10% |