Summary of Fair Value by Strategy Type Alongside Consolidated Funds of Hedge Funds' Remaining Unfunded Commitments and Ability to Redeem Such Investments (Parenthetical) (Detail) |
Sep. 30, 2015 |
|---|---|
| Diversified Instruments | |
| Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] | |
| Percentage of investments unable to be redeemed at, or within 3 months of reporting date | 15.00% |
| Percentage of investments side pocketed as of reporting date | 85.00% |
| Credit Driven | |
| Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] | |
| Percentage of investments unable to be redeemed at, or within 3 months of reporting date | 34.00% |
| Percentage of investments elected to side pocket | 62.00% |
| Percentage of investments redeemable as of reporting date | 4.00% |