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DIVESTITURES (Divestiture of Sodium Borohydride Business) (Details) - Sodium Borohydride business [Member] - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Jan. 30, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal $ 0 $ 0 $ 20  
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Disposal Group, Including Discontinued Operation, Consideration       $ 184
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal     20  
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal, post closing adjustments     2  
Disposal Group Not Discontinued Operation Gain (Loss) On Disposal After Tax     $ (10)