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Share-based Compensation - Summary of Fair Value using Monte-Carlo Simulation Model Utilizing Several Key Assumptions (Details) - Total Shareholder Return (TSR)
3 Months Ended
Nov. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Expected share price volatility 48.50%
Risk-free rate of return 0.23%
Peer Group  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Expected share price volatility 54.90%
Expected correlation 44.50%