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Assets and Liabilities Related to Interest in Non-Consolidated VIEs and Maximum Exposure to Loss (Detail) (USD $)
In Thousands, unless otherwise specified |
Mar. 31, 2015
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Dec. 31, 2014
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|---|---|---|
| Variable Interest Entity [Line Items] | ||
| Investments | $ 813,764bx_VieCarryingAmountOfInvestmentsUnconsolidatedVie | $ 776,079bx_VieCarryingAmountOfInvestmentsUnconsolidatedVie |
| Accounts Receivable | 103,400bx_VieCarryingAmountOfReceivablesUnconsolidatedVie | 125,316bx_VieCarryingAmountOfReceivablesUnconsolidatedVie |
| Due from Affiliates | 45,788bx_VariableInterestEntityConsolidatedCarryingAmountDueFromAffiliates | 53,751bx_VariableInterestEntityConsolidatedCarryingAmountDueFromAffiliates |
| Total VIE Assets | 962,952us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssets | 955,146us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssets |
| Due to Affiliates | 94bx_VariableInterestEntityConsolidatedCarryingAmountDueToAffiliates | 108bx_VariableInterestEntityConsolidatedCarryingAmountDueToAffiliates |
| Accounts Payable, Accrued Expenses and Other Liabilities | 44bx_VariableInterestEntityConsolidatedCarryingAmountAccountsPayableAccruedExpensesAndOtherLiabilities | 124bx_VariableInterestEntityConsolidatedCarryingAmountAccountsPayableAccruedExpensesAndOtherLiabilities |
| Potential Clawback Obligation | 245,651bx_PotentialClawbackObligationOfNonConsolidatedVie | 206,725bx_PotentialClawbackObligationOfNonConsolidatedVie |
| Maximum Exposure to Loss | $ 1,208,741us-gaap_VariableInterestEntityEntityMaximumLossExposureAmount | $ 1,162,103us-gaap_VariableInterestEntityEntityMaximumLossExposureAmount |
| X | ||||||||||
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- Definition
Potential Clawback Obligation of Non-consolidated VIE No definition available.
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| X | ||||||||||
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- Definition
Variable Interest Entity Consolidated Carrying Amount Accounts Payable, Accrued Expenses and Other Liabilities No definition available.
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| X | ||||||||||
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- Definition
Variable Interest Entity Consolidated Carrying Amount Due from Affiliates No definition available.
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| X | ||||||||||
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- Definition
Variable Interest Entity Consolidated Carrying Amount Due to Affiliates No definition available.
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| X | ||||||||||
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- Definition
VIE Carrying Amount of Investments Unconsolidated VIE No definition available.
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| X | ||||||||||
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- Definition
VIE Carrying Amount of Receivables Unconsolidated VIE No definition available.
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| X | ||||||||||
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- Definition
The reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Carrying amount of the assets in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), where the reporting entity is not the VIE's primary beneficiary. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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