Derivative Financial Instruments - Additional Information (Detail) - USD ($) $ in Millions |
May 31, 2016 |
Nov. 30, 2015 |
|---|---|---|
| Derivative Instruments and Hedging Activities Disclosure [Abstract] | ||
| Fair value of derivative instruments in a liability position | $ 64.6 | $ 114.5 |
| Collateral posted for derivative instruments in a liability position | 58.6 | 97.2 |
| Additional collateral required for derivative instruments in a liability position | $ 2.9 | $ 19.7 |