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SUPPLEMENTAL CASH FLOW INFORMATION (Tables)
 9 Months Ended
Sep. 30, 2017
Supplemental Cash Flow Information [Abstract]  
Schedule of Cash Flow, Supplemental Disclosures
Included in the line item "Other items, net" of the "Operating activities" section of the Unaudited Consolidated Statements of Cash Flows are the following changes to Unaudited Consolidated Statements of Financial Position:
(Dollars in millions)
First Nine Months
 
2017
 
2016
Other current assets
$
25

 
$
(25
)
Other noncurrent assets
7

 
27

Payables and other current liabilities
2

 
50

Long-term liabilities and equity
(13
)
 
(33
)
Total
$
21

 
$
19