v2.4.0.8
Unvested Units, After Expected Forfeitures (Detail)
9 Months Ended
Sep. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Blackstone Holdings Partnership Units (Units) 46,743,135
Deferred Restricted Blackstone Common Units and Options (Units) 16,398,203
Total Equity-Based Awards (Units) 63,141,338
Phantom Units (Units) 142,313
Blackstone Holdings Partnership Units (Weighted-Average Service Period in Years) 2 years 1 month 6 days
Deferred Restricted Blackstone Common Units and Options (Weighted-Average Service Period in Years) 2 years 6 months
Total Equity-Based Awards (Weighted-Average Service Period in Years) 2 years 2 months 12 days
Phantom Units (Weighted-Average Service Period in Years) 1 year 8 months 12 days