v2.4.0.8
Summary of Anti-Dilutive Securities (Detail)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Weighted-Average Unvested Deferred Restricted Common Units     22,529,309
Blackstone Partnership Units
     
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Weighted-Average Units 553,579,525 590,446,577 628,115,753