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Goodwill (Tables)
 9 Months Ended
Sep. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Goodwill
The changes in the carrying amount of goodwill by reportable segment for the nine months ended September 30, 2017, were as follows:
(Dollars in millions)
North
America
 
MENA/
Asia Pacific
 
Europe/
SSA/
Russia
 
Latin
America
 
Total
Balance at December 31, 2016
$
1,777

 
$
189

 
$
543

 
$
288

 
$
2,797

Reclassification to assets held for sale
(559
)
 
—

 
—

 
—

 
(559
)
Foreign currency translation adjustments
66

 
5

 
37

 
—

 
108

Balance at September 30, 2017
$
1,284

 
$
194

 
$
580

 
$
288

 
$
2,346