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Compensation Plans - Compensation Cost (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
May 31, 2017
May 31, 2016
May 31, 2017
May 31, 2016
Compensation Plans [Line Items]        
Profit sharing plan $ 1.1 $ 1.2 $ 4.0 $ 4.3
Total compensation cost 68.4 66.6 138.8 149.8
Restricted Cash Awards [Member]        
Compensation Plans [Line Items]        
Restricted cash awards 61.6 59.1 123.3 134.1
Restricted Stock and RSUs [Member]        
Compensation Plans [Line Items]        
Restricted stock and RSUs $ 5.7 $ 6.3 $ 11.5 $ 11.4