Compensation Plans - Compensation Cost (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
May 31, 2016 |
May 31, 2015 |
May 31, 2016 |
May 31, 2015 |
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Profit sharing plan | $ 1.2 | $ 1.4 | $ 4.3 | $ 4.7 |
| Total compensation cost | 66.6 | 64.1 | 149.8 | 148.2 |
| Restricted Cash Awards [Member] | ||||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Restricted cash awards | 59.1 | 48.2 | 134.1 | 103.5 |
| Restricted Stock and RSUs [Member] | ||||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Restricted stock and RSUs | $ 6.3 | $ 14.5 | $ 11.4 | $ 40.0 |