|
Adoption of New Accounting Standards (Details) (USD $)
In Millions, unless otherwise specified |
Oct. 31, 2011
|
|---|---|
| Adoption Of New Accounting Standards Disclosure Details [Abstract] | |
| Nonconsolidated CLO entity with non-recourse assets | $ 487.0 |
| Nonconsolidated CLO entity with non-recourse liabilities | 456.3 |
| Maximum exposure to loss on VIE direct investment and beneficial interest | 2.3 |
| Maximum exposure to loss on VIE investment management fees receivable | $ 0.5 |