v2.4.0.8

INVESTMENTS (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2013
Investments | Investments consist of the following:
|  | September 30, 2013 |  |  | December 31, 2012 |
Investments of Consolidated Blackstone Funds |  | $ | 12,328,927 |  |  | $ | 14,026,745 |
Equity Method Investments |  |  | 2,964,438 |  |  |  | 2,582,504 |
Blackstone’s Treasury Cash Management Strategies |  |  | 1,066,170 |  |  |  | 1,411,680 |
Performance Fees |  |  | 3,705,713 |  |  |  | 2,780,217 |
Other Investments |  |  | 86,138 |  |  |  | 46,124 |
|  | $ | 20,151,386 |  |  | $ | 20,847,270 |
Reconciliation of Realized and Net Change in Unrealized Gains (Losses) to Other Income (Loss) - Net Gains (Losses) from Fund Investment Activities in Condensed Consolidated Statements of Operations | The following table presents the Realized and Net Change in Unrealized Gains (Losses) on investments held by the consolidated Blackstone Funds and a reconciliation to Other Income (Loss) — Net Gains (Losses) from Fund Investment Activities in the Condensed Consolidated Statements of Operations:
|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
|  | 2013 |  |  | 2012 |  |  | 2013 |  |  | 2012 |
Realized Gains (Losses) |  | $ | (2,932 | ) |  | $ | 6,162 |  |  | $ | 95,403 |  |  | $ | (4,279 | )
Net Change in Unrealized Gains (Losses) |  |  | 46,872 |  |  |  | (152,801 | ) |  |  | (36,855 | ) |  |  | 235,368 |
Realized and Net Change in Unrealized Gains (Losses) from Consolidated Blackstone Funds |  |  | 43,940 |  |  |  | (146,639 | ) |  |  | 58,548 |  |  |  | 231,089 |
Interest and Dividend Revenue Attributable to Consolidated Blackstone Funds |  |  | 44,012 |  |  |  | 10,679 |  |  |  | 137,580 |  |  |  | 169,323 |
Other Income (Loss) — Net Gains (Losses) from Fund Investment Activities |  | $ | 87,952 |  |  | $ | (135,960 | ) |  | $ | 196,128 |  |  | $ | 400,412 |
Realized and Net Change in Unrealized Gains (Losses) on Investments Held by Blackstone's Treasury Cash Management Strategies | The following table presents the realized and net change in unrealized gains (losses) on investments held by Blackstone’s Treasury Cash Management Strategies:
|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
|  | 2013 |  |  | 2012 |  |  | 2013 |  |  | 2012 |
Realized Gains (Losses) |  | $ | (6,587 | ) |  | $ | 3,228 |  |  | $ | (4,030 | ) |  | $ | 3,238 |
Net Change in Unrealized Gains (Losses) |  |  | 10,126 |  |  |  | 6,525 |  |  |  | (9,041 | ) |  |  | 7,351 |
|  | $ | 3,539 |  |  | $ | 9,753 |  |  | $ | (13,071 | ) |  | $ | 10,589 |
Performance Fees Allocated to Funds | Performance Fees allocated to the general partner in respect of performance of certain Carry Funds, funds of hedge funds and credit-focused funds were as follows:
|  | Private Equity |  |  | Real Estate |  |  | Hedge Fund Solutions |  |  | Credit |  |  | Total |
Performance Fees, December 31, 2012 |  | $ | 780,474 |  |  | $ | 1,633,279 |  |  | $ | 6,214 |  |  | $ | 360,250 |  |  | $ | 2,780,217 |
Performance Fees Allocated as a Result of Changes in Fund Fair Values |  |  | 165,884 |  |  |  | 1,156,423 |  |  |  | 45,520 |  |  |  | 210,801 |  |  |  | 1,578,628 |
Foreign Exchange Gain |  |  | — |  |  |  | 2,540 |  |  |  | — |  |  |  | — |  |  |  | 2,540 |
Fund Distributions |  |  | (223,502 | ) |  |  | (273,755 | ) |  |  | (10,875 | ) |  |  | (147,540 | ) |  |  | (655,672 | )
Performance Fees, September 30, 2013 |  | $ | 722,856 |  |  | $ | 2,518,487 |  |  | $ | 40,859 |  |  | $ | 423,511 |  |  | $ | 3,705,713 |
Realized and Net Change in Unrealized Gains (Losses), Other Investments | The following table presents Blackstone’s realized and net change in unrealized gains (losses) in other investments:
|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
|  | 2013 |  |  | 2012 |  |  | 2013 |  |  | 2012 |
Realized Gains (Losses) |  | $ | (168 | ) |  | $ | 111 |  |  | $ | 13,938 |  |  | $ | 907 |
Net Change in Unrealized Gains (Losses) |  |  | 1,331 |  |  |  | (912 | ) |  |  | (11,170 | ) |  |  | (722 | )
|  | $ | 1,163 |  |  | $ | (801 | ) |  | $ | 2,768 |  |  | $ | 185 |

X
- Definition Schedule of Performance Fees + References No definition available. + Details
Name: | bx_ScheduleOfPerformanceFeesTextBlock
Namespace Prefix: | bx_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Schedule of realized and net changes in unrealized gains (losses) on investments held by Treasury Cash Management Strategies + References No definition available. + Details
Name: | bx_ScheduleOfRealizedAndNetChangeInUnrealizedGainLossesOnInvestmentHeldByTreasuryCashManagementStrategiesTextBlock
Namespace Prefix: | bx_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Schedule of Realized And Net Change In Unrealized Gains (Losses) on Other Investments + References No definition available. + Details
Name: | bx_ScheduleOfRealizedAndNetChangeInUnrealizedGainsLossesOnOtherInvestmentsTextBlock
Namespace Prefix: | bx_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Schedule of Realized and Net Change in Unrealized Gains on Investments From Funds + References No definition available. + Details
Name: | bx_ScheduleOfReconciliationOfRealizedAndNetChangeInUnrealizedGainsFromFundsTextBlock
Namespace Prefix: | bx_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition A table of investments, shown as a text block. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 6 -Section 10 -Paragraph (c) -Subparagraph (1) + Details
Name: | invest_InvestmentTableTextBlock
Namespace Prefix: | invest_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration