v3.3.0.814

Investments - Additional Information (Detail) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2015 | Sep. 30, 2014 | Dec. 31, 2014
Investment [Line Items] |  |  |  |  |
Recognized net gains related to equity method investments | $ (89.7) | $ 97.1 | $ 91.9 | $ 330.1 |
Consolidated Blackstone Funds |  |  |  |  |
Investment [Line Items] |  |  |  |  |
Investments | $ 454.4 |  | $ 454.4 |  | $ 704.9

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