v2.4.0.6
Unvested Units, After Expected Forfeitures (Detail)
6 Months Ended
Jun. 30, 2012
Year
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Blackstone Holdings Partnership Units (Units) 61,474,866
Deferred Restricted Blackstone Common Units and Options (Units) 11,895,121
Total Equity-Based Awards (Units) 73,369,987
Phantom Units (Units) 206,333
Blackstone Holdings Partnership Units (Weighted-Average Service Period in Years) 2.9
Deferred Restricted Blackstone Common Units and Options (Weighted-Average Service Period in Years) 2.6
Total Equity-Based Awards (Weighted-Average Service Period in Years) 2.8
Phantom Units (Weighted-Average Service Period in Years) 2.9