Consolidated Sponsored Funds (Details) - USD ($) $ in Thousands |
Oct. 31, 2016 |
Oct. 31, 2015 |
|---|---|---|
| Schedule Of Consolidated Funds [Line Items] | ||
| Investments | $ 589,773 | $ 507,020 |
| Other assets | 87,759 | 83,396 |
| Other liabilities | (75,069) | (86,891) |
| Redeemable non-controlling interests | (109,028) | (88,913) |
| Consolidated Sponsored Funds [Member] | ||
| Schedule Of Consolidated Funds [Line Items] | ||
| Investments | 248,036 | 196,395 |
| Other assets | 10,984 | 6,011 |
| Other liabilities | (23,947) | (25,729) |
| Redeemable non-controlling interests | (24,474) | (11,939) |
| Net interest in consolidated sponsored funds | $ 210,599 | $ 164,738 |