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COMMITMENTS AND CONTINGENCIES (Asbestos-Related Matters of Union Carbide Corporation) (Details) - Union Carbide Corporation - Asbestos Related Matters - USD ($)
$ in Millions
3 Months Ended
Dec. 31, 2016
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2002
Loss Contingencies [Line Items]        
Liability for asbestos-related pending and future claims   $ 1,016 $ 1,098 $ 2,200
Asbestos-related charge $ 1,113      
Percentage of recorded asbestos liability related to pending claims   25.00% 22.00%  
Percentage of recorded asbestos liability related to future claims   75.00% 78.00%