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Accumulated Other Comprehensive Loss (Tables)
12 Months Ended
Dec. 31, 2016
Accumulated Other Comprehensive Loss [Abstract]  
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
The accumulated balances for each classification of other comprehensive loss are as follows:

(dollars in millions)
 
Net Foreign Currency Translation Adjustment
 
Net Defined Benefit Pension Plans
 
Total
Balance at January 1, 2014
 
$
67

 
$
(31
)
 
$
36

Other comprehensive loss before reclassifications
 
(178
)
 
(9
)
 
(187
)
Amounts reclassified from accumulated other comprehensive loss
 

 
4

 
4

Balance at December 31, 2014
 
(111
)
 
(36
)
 
(147
)
Other comprehensive income (loss) before reclassifications
 
(162
)
 
6

 
(156
)
Amounts reclassified from accumulated other comprehensive loss
 

 
2

 
2

Balance at December 31, 2015
 
(273
)
 
(28
)
 
(301
)
Other comprehensive loss before reclassifications
 
(80
)
 
(7
)
 
(87
)
Amounts reclassified from accumulated other comprehensive loss
 

 
1

 
1

Balance at December 31, 2016
 
$
(353
)
 
$
(34
)
 
$
(387
)