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Goodwill
 9 Months Ended
Sep. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill
Goodwill

The changes in the carrying amount of goodwill by reportable segment for the nine months ended September 30, 2016 were as follows:
(Dollars in millions)
North
America
 
MENA/
Asia Pacific
 
Europe/
SSA/
Russia
 
Latin
America
 
Total
Balance at December 31, 2015
$
1,756

 
$
190

 
$
573

 
$
284

 
$
2,803

Foreign currency translation adjustments
41

 
2

 
(10
)
 
4

 
37

Balance at September 30, 2016
$
1,797

 
$
192

 
$
563

 
$
288

 
$
2,840