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Goodwill
 12 Months Ended
Dec. 31, 2013
Goodwill Disclosure [Abstract]  
Goodwill
Goodwill

The changes in the carrying amount of goodwill during the years ended December 31, 2013 and 2012 are as follows (dollars in millions):
 
Total
Balance as of January 1, 2012
$
2,541

Goodwill adjustments
24

Balance as of December 31, 2012
2,565

Goodwill adjustments
12

Balance as of December 31, 2013
$
2,577



The Company conducted its annual goodwill impairment analysis in the fourth quarter of 2013 and 2012. As a result of the Company's annual assessment, Level 3 concluded that its goodwill was not impaired in 2013 or 2012.