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SUPPLEMENTAL CASH FLOW INFORMATION (Tables)
 6 Months Ended
Jun. 30, 2018
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 Six Months
 
2018
 
2017
Other current assets
$
(53
)
 
$
(3
)
Other noncurrent assets
19

 
7

Payables and other current liabilities
31

 
(30
)
Long-term liabilities and equity
18

 
—

Total
$
15

 
$
(26
)