Goodwill

The changes in the carrying amount of goodwill during the years ended December 31, 2014 and 2013 are as follows (dollars in millions):



	Total
Balance as of January 1, 2013	$	2,565
Goodwill adjustments	12
Balance as of December 31, 2013	2,577
Goodwill adjustments	(12		)
Goodwill acquired in tw telecom acquisition	5,124
Balance as of December 31, 2014	$	7,689

The Company conducted its annual goodwill impairment analysis as of October 1, 2014 and 2013. As a result of the Company's annual assessment, Level 3 concluded that its goodwill was not impaired in 2014 or 2013.