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Compensation Plans - Remaining Unamortized Amounts (Details)
$ in Millions
9 Months Ended
Aug. 31, 2017
USD ($)
Compensation Plans [Line Items]  
Remaining Unamortized Amounts $ 567.6
Non-vested share-based awards  
Compensation Plans [Line Items]  
Remaining Unamortized Amounts $ 42.0
Weighted Average Vesting Period (in Years) 2 years
Restricted cash awards  
Compensation Plans [Line Items]  
Remaining Unamortized Amounts $ 525.6
Weighted Average Vesting Period (in Years) 3 years