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Compensation Plans - Remaining Unamortized Amounts (Details)
$ in Millions
9 Months Ended
Aug. 31, 2015
USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Remaining Unamortized Amounts $ 324.6
Nonvested Share-Based Awards [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Remaining Unamortized Amounts $ 42.1
Weighted Average Vesting Period (in Years) 1 year 9 months 18 days
Restricted Cash Awards [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Remaining Unamortized Amounts $ 282.5
Weighted Average Vesting Period (in Years) 3 years