v2.4.0.8
Clawback Obligations by Segment (Detail) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2013
Dec. 31, 2012
Schedule Of Commitments And Contingencies [Line Items]    
Clawback obligations $ 157,686 $ 267,116
Private Equity
    
Schedule Of Commitments And Contingencies [Line Items]    
Clawback obligations 127,862 203,154
Real Estate
    
Schedule Of Commitments And Contingencies [Line Items]    
Clawback obligations 27,532 63,375
Credit
    
Schedule Of Commitments And Contingencies [Line Items]    
Clawback obligations 2,292 587
Blackstone Holdings Finance Co. L.L.C.
    
Schedule Of Commitments And Contingencies [Line Items]    
Clawback obligations partnerships 98,615 101,794
Blackstone Holdings Finance Co. L.L.C. | Private Equity
    
Schedule Of Commitments And Contingencies [Line Items]    
Clawback obligations partnerships 70,510 69,302
Blackstone Holdings Finance Co. L.L.C. | Real Estate
    
Schedule Of Commitments And Contingencies [Line Items]    
Clawback obligations partnerships 26,784 32,152
Blackstone Holdings Finance Co. L.L.C. | Credit
    
Schedule Of Commitments And Contingencies [Line Items]    
Clawback obligations partnerships 1,321 340
Current And Former Blackstone Personnel
    
Schedule Of Commitments And Contingencies [Line Items]    
Clawback obligations Current and Former Personnel 59,071 165,322
Current And Former Blackstone Personnel | Private Equity
    
Schedule Of Commitments And Contingencies [Line Items]    
Clawback obligations Current and Former Personnel 57,352 133,852
Current And Former Blackstone Personnel | Real Estate
    
Schedule Of Commitments And Contingencies [Line Items]    
Clawback obligations Current and Former Personnel 748 31,223
Current And Former Blackstone Personnel | Credit
    
Schedule Of Commitments And Contingencies [Line Items]    
Clawback obligations Current and Former Personnel $ 971 $ 247