v2.4.0.6
Investments (Detail) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2012
Dec. 31, 2011
Schedule of Investments [Line Items]    
Equity Method Investments $ 2,253,086 $ 2,218,103
Blackstone's Treasury Cash Management Strategies 738,886 685,859
Performance Fees 2,271,290 1,889,152
Other Investments 30,491 28,390
Investments 19,351,458 15,128,299
Consolidated Blackstone Funds
   
Schedule of Investments [Line Items]    
Investments of Consolidated Blackstone Funds $ 14,057,705 $ 10,306,795