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Compensation Plans - Remaining Unamortized Amounts (Details)
$ in Millions
12 Months Ended
Nov. 30, 2017
USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Remaining Unamortized Amounts $ 520.3
Non-vested share-based awards  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Remaining Unamortized Amounts $ 38.7
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 $ 481.6
Weighted Average Vesting Period (in Years) 3 years