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OTHER CHARGES (INCOME), NET (Tables)
 12 Months Ended
Dec. 31, 2019
Other Income and Expenses [Abstract]  
Schedule of Other Nonoperating Income (Expense)
 
For years ended December 31,
(Dollars in millions)
2019
 
2018
 
2017
Foreign exchange transaction losses (gains), net (1)
$
9

 
$
12

 
$
5

Currency transaction costs resulting from tax law changes and outside-U.S. entity reorganizations
—

 
13

 
—

(Income) loss from equity investments and other investment (gains) losses, net
(10
)
 
(17
)
 
(12
)
Coal gasification incident property insurance
—

 
(65
)
 
—

Cost of disposition of claims against discontinued Solutia operations
—

 
—

 
9

Gain from sale of business (2)
—

 
—

 
(3
)
Other, net
4

 
4

 
5

Other (income) charges, net
$
3

 
$
(53
)
 
$
4