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ENVIRONMENTAL MATTERS (Tables)
 12 Months Ended
Dec. 31, 2016
Environmental Matters [Abstract]  
Schedule of Environmental Liabilities, Current and Non-current
 
December 31,
(Dollars in millions)
2016
 
2015
Environmental contingent liabilities, current
$
30

 
$
35

Environmental contingent liabilities, long-term
291

 
301

Total
$
321

 
$
336
Schedule of Changes to Environmental Remediation Liabilities
(Dollars in millions)
Environmental Remediation Liabilities
Balance at December 31, 2015
$
308

Changes in estimates recorded to earnings and other
11

Cash reductions
(24
)
Balance at December 31, 2016
$
295