COMMITMENTS AND CONTINGENCIES (Narrative) (Details)	1 Months Ended			6 Months Ended
	Jul. 31, 2016 item	Mar. 31, 2016 mi	May 31, 2007 entity mi	Jun. 30, 2016 USD ($)
Commitments And Contingencies Disclosure [Line Items]
Number of other companies to perform a Remedial Investigation/ Feasibility Study related to the Lower Passaic River Clean-Up lawsuit | entity			70
Number of miles of the River used in the Remedial Investigation/Feasibility Study | mi			17
Number of miles for bank-to-bank dredging remedy | mi		8
Texas Brine and Occidental Chemical Co [Member]
Commitments And Contingencies Disclosure [Line Items]
Total amount of damages claimed				$ 500,000,000
Minimum [Member] | Cooperating Parties Group [Member]
Commitments And Contingencies Disclosure [Line Items]
Estimated implementation costs				475,000,000
Maximum [Member] | EPA [Member]
Commitments And Contingencies Disclosure [Line Items]
Estimated implementation costs				1,380,000,000
Maximum [Member] | Cooperating Parties Group [Member]
Commitments And Contingencies Disclosure [Line Items]
Estimated implementation costs				725,000,000
Standby Letters of Credit [Member]
Commitments And Contingencies Disclosure [Line Items]
Other Liabilities				$ 39,840,000
Subsequent Event [Member]
Commitments And Contingencies Disclosure [Line Items]
Number of groundwater extraction wells | item	2