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Summary of Fair Value by Strategy Type Alongside Consolidated Funds of Hedge Funds' Remaining Unfunded Commitments and Ability to Redeem Such Investments (Detail) (USD $) In Thousands, unless otherwise specified | Jun. 30, 2012
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Net Asset Value As Fair Value By Strategy [Line Items] |  |
Fair Value | $ 741,401 |
Unfunded Commitments | 9,704 |
Diversified Instruments |  |
Net Asset Value As Fair Value By Strategy [Line Items] |  |
Fair Value | 145,694 | [1]
Unfunded Commitments | 7,724 | [1]
Credit Driven |  |
Net Asset Value As Fair Value By Strategy [Line Items] |  |
Fair Value | 163,176 | [2]
Unfunded Commitments | 1,980 | [2]
Event Driven |  |
Net Asset Value As Fair Value By Strategy [Line Items] |  |
Fair Value | 99,340 | [3]
Equity |  |
Net Asset Value As Fair Value By Strategy [Line Items] |  |
Fair Value | 287,075 | [4]
Commodities |  |
Net Asset Value As Fair Value By Strategy [Line Items] |  |
Fair Value | $ 46,116 | [5]
[1] | Diversified Instruments include investments in hedge funds that invest across multiple strategies. Investments representing 43% of the value of the investments in this category may not be redeemed at, or within three months of, the reporting date. The remaining 57% of investments within this category represent investments in hedge funds that are in the process of liquidating. Distributions from these funds will be received as underlying investments are liquidated. The time at which this redemption restriction may lapse cannot be estimated.
[2] | The Credit Driven category includes investments in hedge funds that invest primarily in domestic and international bonds. Investments representing 65% of the value of the investments in this category may not be redeemed at, or within three months of, the reporting date. Investments representing 18% of the value in the credit driven category are subject to redemption restrictions at the discretion of the investee fund manager who may choose (but may not have exercised such ability) to side-pocket such investments. The remaining 17% of investments within this category are redeemable as of the reporting date.
[3] | The Event Driven category includes investments in hedge funds whose primary investing strategy is to identify certain event-driven investments. Withdrawals are not permitted in this category. Distributions will be received as the underlying investments are liquidated.
[4] | The Equity category includes investments in hedge funds that invest primarily in domestic and international equity securities. Investments representing 85% of the total value of investments in this category may not be redeemed at, or within three months of, the reporting date. The remaining 15% are subject to redemption restrictions at the discretion of the investee fund manager who may choose (but may not have elected such ability) to side-pocket such investments. As of the reporting date, the investee fund manager had not elected to side-pocket Blackstone's investments.
[5] | The Commodities category includes investments in commodities-focused hedge funds that primarily invest in futures and physical-based commodity driven strategies. Withdrawals are not permitted in this category. Distributions will be received as the underlying investments are liquidated.

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- Definition The amount of unfunded commitments for which the entity is obligated, to those certain investments for which net asset value per share is calculated (including by unit, membership interest, or other equity (ownership interest) unit measure) (alternative investments). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 6A -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=7578670&loc=SL6742756-110258 + Details
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