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Asset Impairment and Restructuring (Tables)
9 Months Ended
Sep. 30, 2016
Restructuring and Related Activities [Abstract]  
Schedule of Restructuring Reserve by Type of Cost [Table Text Block]
The table below provides a rollforward of one-time charges associated with employee terminations based on the fair value of the termination benefits. These amounts are included in "other current liabilities" on our condensed consolidated balance sheets.
Dollars in millions
Severance Accrual
Balance at December 31, 2015
$
19

Charges
15

Payments
(21
)
Balance at September 30, 2016
$
13

 
 
Balance at December 31, 2014
$
21

Charges
11

Payments
(23
)
Balance at September 30, 2015
$
9