v2.4.1.9

Clawback Obligations by Segment (Detail) (USD $) In Thousands, unless otherwise specified | Mar. 31, 2015 | Dec. 31, 2014
--- | --- | ---
Schedule Of Commitments And Contingencies [Line Items] |  |
Clawback obligations | $ 3,369 bx_ClawbackObligations | $ 3,889 bx_ClawbackObligations
Real Estate Segment |  |
Schedule Of Commitments And Contingencies [Line Items] |  |
Clawback obligations | 1,590 bx_ClawbackObligations / us-gaap_StatementBusinessSegmentsAxis = bx_RealEstateSegmentMember | 1,777 bx_ClawbackObligations / us-gaap_StatementBusinessSegmentsAxis = bx_RealEstateSegmentMember
Credit Segment |  |
Schedule Of Commitments And Contingencies [Line Items] |  |
Clawback obligations | 1,779 bx_ClawbackObligations / us-gaap_StatementBusinessSegmentsAxis = bx_CreditSegmentMember | 2,112 bx_ClawbackObligations / us-gaap_StatementBusinessSegmentsAxis = bx_CreditSegmentMember
Blackstone Holdings Finance Co. L.L.C. |  |
Schedule Of Commitments And Contingencies [Line Items] |  |
Clawback obligations partnerships | 1,170 bx_ClawbackObligationsPartnerships / dei_LegalEntityAxis = bx_BlackstoneHoldingsMember | 1,371 bx_ClawbackObligationsPartnerships / dei_LegalEntityAxis = bx_BlackstoneHoldingsMember
Blackstone Holdings Finance Co. L.L.C. | Real Estate Segment |  |
Schedule Of Commitments And Contingencies [Line Items] |  |
Clawback obligations partnerships | 130 bx_ClawbackObligationsPartnerships / dei_LegalEntityAxis = bx_BlackstoneHoldingsMember / us-gaap_StatementBusinessSegmentsAxis = bx_RealEstateSegmentMember | 130 bx_ClawbackObligationsPartnerships / dei_LegalEntityAxis = bx_BlackstoneHoldingsMember / us-gaap_StatementBusinessSegmentsAxis = bx_RealEstateSegmentMember
Blackstone Holdings Finance Co. L.L.C. | Credit Segment |  |
Schedule Of Commitments And Contingencies [Line Items] |  |
Clawback obligations partnerships | 1,040 bx_ClawbackObligationsPartnerships / dei_LegalEntityAxis = bx_BlackstoneHoldingsMember / us-gaap_StatementBusinessSegmentsAxis = bx_CreditSegmentMember | 1,241 bx_ClawbackObligationsPartnerships / dei_LegalEntityAxis = bx_BlackstoneHoldingsMember / us-gaap_StatementBusinessSegmentsAxis = bx_CreditSegmentMember
Current And Former Blackstone Personnel |  |
Schedule Of Commitments And Contingencies [Line Items] |  |
Clawback obligations Current and Former Personnel | 2,199 bx_ClawbackObligationsCurrentAndFormerPersonnel / dei_LegalEntityAxis = bx_CurrentAndFormerBlackstonePersonnelMember | 2,518 bx_ClawbackObligationsCurrentAndFormerPersonnel / dei_LegalEntityAxis = bx_CurrentAndFormerBlackstonePersonnelMember
Current And Former Blackstone Personnel | Real Estate Segment |  |
Schedule Of Commitments And Contingencies [Line Items] |  |
Clawback obligations Current and Former Personnel | 1,460 bx_ClawbackObligationsCurrentAndFormerPersonnel / dei_LegalEntityAxis = bx_CurrentAndFormerBlackstonePersonnelMember / us-gaap_StatementBusinessSegmentsAxis = bx_RealEstateSegmentMember | 1,647 bx_ClawbackObligationsCurrentAndFormerPersonnel / dei_LegalEntityAxis = bx_CurrentAndFormerBlackstonePersonnelMember / us-gaap_StatementBusinessSegmentsAxis = bx_RealEstateSegmentMember
Current And Former Blackstone Personnel | Credit Segment |  |
Schedule Of Commitments And Contingencies [Line Items] |  |
Clawback obligations Current and Former Personnel | $ 739 bx_ClawbackObligationsCurrentAndFormerPersonnel / dei_LegalEntityAxis = bx_CurrentAndFormerBlackstonePersonnelMember / us-gaap_StatementBusinessSegmentsAxis = bx_CreditSegmentMember | $ 871 bx_ClawbackObligationsCurrentAndFormerPersonnel / dei_LegalEntityAxis = bx_CurrentAndFormerBlackstonePersonnelMember / us-gaap_StatementBusinessSegmentsAxis = bx_CreditSegmentMember

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