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Compensation Plans - Restricted Cash Awards (Details) - USD ($)
$ in Millions
1 Months Ended 12 Months Ended
Dec. 31, 2016
Nov. 30, 2016
Nov. 30, 2015
Nov. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]        
Year Ended November 30, 2015   $ 293.2 $ 313.2 $ 284.3
Subsequent event [Member] | Restricted Cash Awards [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]        
Year Ended November 30, 2015 $ 19.1      
Year Ended November 30, 2016 19.1      
Year Ended November 30, 2017 18.4      
Thereafter 39.5      
Total $ 96.1