COMMITMENTS AND CONTINGENCIES (Details)	9 Months Ended
	Sep. 30, 2015 USD ($) plaintiff item	Dec. 31, 2014 USD ($)
Loss Contingencies [Line Items]
Environmental contingencies	$ 42,000,000	$ 54,000,000
Current reserves for environmental contingencies	$ 2,000,000	12,000,000
Number of plant site locations | item	2
Minimum
Loss Contingencies [Line Items]
Potential additional loss contingencies	$ 52,000,000
Maximum
Loss Contingencies [Line Items]
Potential additional loss contingencies	89,000,000
Lake Charles, South facility
Loss Contingencies [Line Items]
Environmental contingencies	12,000,000	15,000,000
Natrium, West Virginia facility
Loss Contingencies [Line Items]
Environmental contingencies	$ 18,000,000	15,000,000
Natrium, West Virginia facility and Lake Charles, South facility | Minimum
Loss Contingencies [Line Items]
Period during which facilities are operational	65 years
Calcasieu River Estuary in Lake Charles Louisiana
Loss Contingencies [Line Items]
Number of individuals that have filed lawsuits against the Company | plaintiff	2,615
Environmental contingencies	$ 4,000,000	$ 18,000,000