Quarterly report pursuant to Section 13 or 15(d)

FAIR VALUE - INSTRUMENTS MEASURED AT FAIR VALUE ON A RECURRING BASIS USING SIGNIFICANT UNOBSERVABLE INPUTS (LEVEL 3) AND INSTRUMENTS MEASURED AT FAIR VALUE ON A NON-RECURRING BASIS (Details)

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FAIR VALUE - INSTRUMENTS MEASURED AT FAIR VALUE ON A RECURRING BASIS USING SIGNIFICANT UNOBSERVABLE INPUTS (LEVEL 3) AND INSTRUMENTS MEASURED AT FAIR VALUE ON A NON-RECURRING BASIS (Details)
$ in Millions
1 Months Ended 3 Months Ended
Feb. 28, 2019
USD ($)
Mar. 31, 2019
USD ($)
item
Reconciliation of beginning and ending balances for assets measured at fair value on a recurring basis    
Number of instruments categorized as Level 3 | item   0
Cash received from forward swap contract related to the sale of investment in Venator $ 16 $ 16
Recurring basis    
Reconciliation of beginning and ending balances for assets measured at fair value on a recurring basis    
Total net gains included in earnings   $ 0
Cash received from forward swap contract related to the sale of investment in Venator $ 16