COMMITMENTS AND CONTINGENT LIABILITIES (Asbestos-Related Matters of Union Carbide Corporation) (Table and Narrative) (Details) - Asbestos Related Matters [Member] - Union Carbide Corporation [Member] - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Loss Contingencies [Line Items]
Liability for Asbestos and Environmental Claims, Gross	$ 1,339	$ 1,369
Percentage of recorded asbestos liability related to pending claims	16.00%
Percentage of recorded asbestos liability related to future claims	84.00%