Quarterly report pursuant to Section 13 or 15(d)

FAIR VALUE - ASSETS AND LIABILITIES MEASURED AT FAIR VALUE ON A RECURRING BASIS (Details)

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FAIR VALUE - ASSETS AND LIABILITIES MEASURED AT FAIR VALUE ON A RECURRING BASIS (Details) - Recurring basis - USD ($)
$ in Millions
Sep. 30, 2019
Dec. 31, 2018
Assets:    
Non-qualified employee benefit plan investments $ 25 $ 23
Forward swap contract related to the sale of investment in Venator   14
Total assets   37
Liabilities:    
Interest rate contracts (1)  
Quoted prices in active markets for identical assets (Level 1)    
Assets:    
Non-qualified employee benefit plan investments 25 23
Total assets   23
Significant other observable inputs (Level 2)    
Assets:    
Forward swap contract related to the sale of investment in Venator   14
Total assets   $ 14
Liabilities:    
Interest rate contracts $ (1)