v2.4.0.8
COMMITMENTS AND CONTINGENCIES (Details) (USD $)
In Millions, unless otherwise specified
 3 Months Ended 3 Months Ended 12 Months Ended
Jun. 30, 2013
item
Dec. 31, 2012
Jun. 30, 2013
Minimum
Jun. 30, 2013
Maximum
Jun. 30, 2013
Lake Charles, LA facility
Dec. 31, 2012
Calcasieu River Estuary and plant sites
item
Jun. 30, 2013
Calcasieu River Estuary and plant sites
Jun. 30, 2013
Natrium, West Virginia facility
Environmental Matters                
Accrual of remediation costs $ 49.9 $ 7.2     $ 15.0 $ 7.2 $ 12.0 $ 14.0
Current reserves for environmental contingencies 1.9               
Number of plant site locations 2         4    
Expected cash outlays for environmental remediation through 2015     10 20        
Cash outlays for environmental remediation from 2016 through 2017     3 5        
Accrual of remediation costs in non-current liabilities         $ 2.9