Exit Costs - Narrative (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
May 31, 2016 |
May 31, 2015 |
May 31, 2016 |
May 31, 2015 |
|
| Restructuring Cost and Reserve [Line Items] | ||||
| Pre-tax loss | $ (102,597) | $ (84,712) | $ 147,279 | $ (97,596) |
| Non-cash restructuring costs | 30 | 10,800 | 341 | 10,800 |
| Futures business [Member] | ||||
| Restructuring Cost and Reserve [Line Items] | ||||
| Pre-tax loss | $ 600 | $ 37,300 | $ 1,900 | $ 50,700 |