v2.4.0.6
NET INCOME (LOSS) PER COMMON UNIT - Additional Information (Detail) (USD $)
In Millions, except Share data, unless otherwise specified
6 Months Ended 1 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Blackstone Common Units
Jan. 31, 2008
Blackstone
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Common stock repurchased, value   $ 2.1 $ 500.0
Amount remaining available for repurchases $ 335.8    
Common stock repurchased, units   116,270