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ASSET IMPAIRMENTS AND RESTRUCTURING (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Restructuring Cost and Reserve [Line Items]                      
Asset Impairment Charges                 $ 72 $ 39 $ 1
Asset Impairments and Restructuring Charges Recognized [Abstract]                      
Asset impairments                 27 0 1
Intangible asset and goodwill impairments                 45 39 0
Severance charges                 45 6 6
Site closure and restructuring charges                 9 0 1
Asset impairments and restructuring charges, net $ 74 $ 2 $ 18 $ 32 $ 39 $ 0 $ 4 $ 2 126 45 8
Restructuring Charge [Roll Forward]                      
Balance at Beginning of Period       14       29 14 29 55
Restructuring Costs and Asset Impairment Charges                 126 45 8
Non-cash Reductions                 (71) (38) 0
Cash Reductions                 (41) (22) (34)
Balance at End of Period 28       14       28 14 29
Non-Cash Charges [Member]                      
Restructuring Charge [Roll Forward]                      
Balance at Beginning of Period       0       0 0 0 0
Restructuring Reserve, Period Increase (Decrease)                 72 39 1
Non-cash Reductions                 (72) (39) (1)
Cash Reductions                 0 0 0
Balance at End of Period 0       0       0 0 0
Employee Severance [Member]                      
Restructuring Cost and Reserve [Line Items]                      
Restructuring Charges                     5
Asset Impairments and Restructuring Charges Recognized [Abstract]                      
Asset impairments and restructuring charges, net                   6  
Restructuring Charge [Roll Forward]                      
Balance at Beginning of Period       6       19 6 19 42
Restructuring Reserve, Period Increase (Decrease)                 45 6 6
Restructuring Reserve, Accrual Adjustment                 0 1 0
Cash Reductions                 (34) (20) (29)
Balance at End of Period 17       6       17 6 19
Site Closure and Restructuring Costs [Member]                      
Restructuring Charge [Roll Forward]                      
Balance at Beginning of Period       $ 8       $ 10 8 10 13
Restructuring Reserve, Period Increase (Decrease)                 9 0 1
Restructuring Reserve, Accrual Adjustment                 1 0 1
Cash Reductions                 (7) (2) (5)
Balance at End of Period $ 11       $ 8       11 8 10
Additives And Functional Products [Member] | Property, Plant and Equipment [Member]                      
Restructuring Cost and Reserve [Line Items]                      
Asset Impairment Charges                 27    
Additives And Functional Products [Member] | Goodwill [Member]                      
Restructuring Cost and Reserve [Line Items]                      
Asset Impairment Charges                 45 38  
Advanced Materials [Member] | Indefinite-lived Intangible Assets [Member]                      
Restructuring Cost and Reserve [Line Items]                      
Asset Impairment Charges                   $ 1  
Corporate Cost Actions 2019 [Member] | Corporate, Non-Segment [Member]                      
Asset Impairments and Restructuring Charges Recognized [Abstract]                      
Severance charges                 45    
Other Restructuring Costs                 5    
Capital Project AFP [Member] | Additives And Functional Products [Member]                      
Asset Impairments and Restructuring Charges Recognized [Abstract]                      
Site closure and restructuring charges                 $ 4    
China Site Closure [Member] | Additives And Functional Products [Member] | Site Closure and Restructuring Costs [Member]                      
Asset Impairments and Restructuring Charges Recognized [Abstract]                      
Asset impairments and restructuring charges, net                     $ 3