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PLANT, PROPERTY AND EQUIPMENT, NET - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Property, Plant and Equipment [Abstract]        
Depreciation expense $ 16.5 $ 16.7 $ 34.0 $ 33.7