Clawback Obligations by Segment (Detail) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Product Liability Contingency [Line Items]
Clawback obligations	$ 6,308	$ 3,356
Credit Segment
Product Liability Contingency [Line Items]
Clawback obligations	6,308	3,356
Credit Segment | Blackstone Holdings Finance Co. L.L.C.
Product Liability Contingency [Line Items]
Clawback obligations partnerships	3,649	1,670
Credit Segment | Current And Former Blackstone Personnel
Product Liability Contingency [Line Items]
Clawback obligations Current and Former Personnel	$ 2,659	$ 1,686