COMMITMENTS AND CONTINGENT LIABILITIES (Urethane Matters) (Narrative) (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended			6 Months Ended
	Jul. 31, 2013	Jun. 30, 2016	Mar. 31, 2016	Mar. 31, 2013	Jun. 30, 2016	Jun. 30, 2015
Loss Contingencies [Line Items]
Litigation Settlement, Amount					$ 835	$ 0
Urethane Antitrust Litigation [Domain] | February 20, 2013 Urethane Matters Ruling [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Awarded, Value				$ 400
Urethane Antitrust Litigation [Domain] | July 2013 Urethane Matters Ruling [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Awarded, Value	$ 1,060
Performance Materials & Chemicals [Member] | Urethane Antitrust Litigation [Domain]
Loss Contingencies [Line Items]
Litigation Settlement, Amount					$ 835
Loss Contingency, Loss in Period			$ 835
Performance Materials & Chemicals [Member] | Opt-out Cases [Domain]
Loss Contingencies [Line Items]
Litigation Settlement, Amount		$ 400
Loss Contingency, Loss in Period			$ 400