Intangible Assets

9 Months Ended

Sep. 30, 2014

Intangible Assets, Net (Excluding Goodwill) [Abstract]

The following table sets forth the details of the Company's intangible assets at September 30, 2014 and December 31, 2013.



	At September 30, 2014						At December 31, 2013
	Gross		Accumulated Amortization		Net		Gross		Accumulated Amortization		Net
	(in millions)
Directory services agreements	$	666	$	254	$	412	$	666	$	97	$	569
Client relationships	924		574		350		924		348		576
Trademarks and domain names	222		75		147		222		29		193
Patented technologies	42		13		29		42		4		38
Advertising commitment	11		8		3		11		6		5
Total intangible assets	$	1,865	$	924	$	941	$	1,865	$	484	$	1,381

Amortization expense for intangible assets was $147 million and $440 million for the three and nine months ended September 30, 2014, respectively, compared to $226 million and $477 million for the three and nine months ended September 30, 2013, respectively. There was no amortization expense associated with intangible assets related to SuperMedia included in our operating results for the four months ended April 30, 2013, as the merger was effective April 30, 2013. Additionally, amortization expense related to intangibles assets decreased due to the impact of the non-cash impairment charge related to intangible assets that was recorded during 2013, partially offset by adjustments to the estimated remaining lives in 2013.

The annual amortization expense for intangible assets is estimated to be $587 million in 2014, $373 million in 2015, $237 million in 2016, $103 million in 2017 and $81 million in 2018.