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Revenue Recognition (Narrative) (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
May 31, 2022
May 31, 2022
Aug. 31, 2021
Deferred revenue $ 85.5 $ 85.5 $ 88.6
Other long-term liabilities 2.2 2.2 2.7
Remaining performance obligations 116.5 116.5  
Subscription Offerings [Member]      
Deferred revenue 68.5 68.5 $ 77.0
Subscription [Member]      
Deferred revenue recognized $ 30.6 $ 87.0