Reconciliation of Realized and Net Change in Unrealized Gains (Losses) to Other Income - Net Gains from Fund Investment Activities in Condensed Consolidated Statements of Operations (Detail) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2015 |
Sep. 30, 2014 |
Sep. 30, 2015 |
Sep. 30, 2014 |
|
| Gain (Loss) on Investments [Line Items] | ||||
| Realized Gains | $ 51,150 | $ 32,427 | $ 178,662 | $ 66,366 |
| Net Change in Unrealized Losses | (102,340) | (71,525) | (100,597) | (30,406) |
| Realized and Net Change in Unrealized Gains (Losses) from Consolidated Blackstone Funds | (51,190) | (39,098) | 78,065 | 35,960 |
| Interest and Dividend Revenue Attributable to Consolidated Blackstone Funds | 34,323 | 47,780 | 80,638 | 181,462 |
| Other Income (Loss) - Net Gains (Losses) from Fund Investment Activities | $ (16,867) | $ 8,682 | $ 158,703 | $ 217,422 |