Revenue Recognition (Narrative) (Details) - USD ($) $ in Millions |
3 Months Ended | |
|---|---|---|
Nov. 30, 2021 |
Aug. 31, 2021 |
|
| Deferred revenue | $ 80.2 | $ 88.6 |
| Other long-term liabilities | 2.4 | 2.7 |
| Remaining performance obligations | 121.1 | |
| Subscription Offerings [Member] | ||
| Deferred revenue | 67.8 | $ 77.0 |
| Subscription [Member] | ||
| Deferred revenue recognized | $ 28.4 |