Stock Based Compensation Plans (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Apr. 30, 2017 |
Apr. 30, 2016 |
Apr. 30, 2017 |
Apr. 30, 2016 |
|
| Stock-based compensation expense: | ||||
| Stock options (under the Omnibus Incentive Plans) | $ 4,818 | $ 4,590 | $ 10,520 | $ 9,729 |
| Restricted shares (under the Omnibus Incentive Plans) | 11,549 | 11,013 | 23,623 | 21,951 |
| Phantom stock units (under the Omnibus Incentive Plans) | 105 | 97 | 226 | 124 |
| Employee stock purchase plans | 0 | 0 | 176 | 211 |
| Employee stock purchase incentive plan | 496 | 328 | 549 | 360 |
| Atlanta Capital Plan | 855 | 652 | 1,710 | 1,417 |
| Parametric Plan | 940 | 1,790 | 1,880 | 2,939 |
| Parametric Phantom Incentive Plan | 378 | 0 | 756 | 0 |
| Total stock-based compensation expense | 19,141 | 18,470 | 39,440 | 36,731 |
| Tax benefits expected to be realized for tax deductions from option exercises | $ 7,000 | $ 6,300 | $ 14,300 | $ 12,300 |