v2.4.0.8
Commitments and Contingencies - Additional Information (Detail) (USD $)
9 Months Ended
Sep. 30, 2013
Schedule Of Commitments And Contingencies [Line Items]  
General partner capital funding $ 1,500,000,000
Total investments at risk in respect of guarantees extended 4,000,000
Loans held by employees for investment guaranteed 56,900,000
Contingent obligations currently anticipated to expire end 2018
Provision for cash clawback 442,700,000
Blackstone Funds
 
Schedule Of Commitments And Contingencies [Line Items]  
Funds signed investment commitments 73,400,000
Blackstone Funds | Portfolio Company Acquisition
 
Schedule Of Commitments And Contingencies [Line Items]  
Signed investment commitments for portfolio company acquisitions in process of closing $ 35,400,000