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Compensation Plans - Remaining Unamortized Amounts (Details)
$ in Millions
9 Months Ended
Aug. 31, 2020
USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Remaining Unamortized Amounts $ 641.6
Non-vested share-based awards  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Remaining Unamortized Amounts $ 35.4
Weighted Average Vesting Period (in Years) 2 years
Restricted cash awards  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Remaining Unamortized Amounts $ 606.2
Weighted Average Vesting Period (in Years) 3 years