Intangible Assets

9 Months Ended

Sep. 30, 2014

Intangible Assets

8. Intangible Assets

Intangible assets consisted of the following:

	Gross
(In millions)	Carrying Amount		Accumulated Amortization		Net Book Value
September 30, 2014
Customer related intangible assets	$	2,155	$	765	$	1,390
Acquired software and technology		493		339		154
Trade names		120		44		76
Capitalized software development costs		603		277		326
Purchased software		229		133		96
Total	$	3,600	$	1,558	$	2,042
	Gross
(In millions)	Carrying Amount		Accumulated Amortization		Net Book Value
December 31, 2013
Customer related intangible assets	$	2,155	$	667	$	1,488
Acquired software and technology		493		289		204
Trade names		120		39		81
Capitalized software development costs		635		348		287
Purchased software		277		195		82
Total	$	3,680	$	1,538	$	2,142

The Company estimates that annual amortization expense with respect to acquired intangible assets, which include customer related intangible assets, acquired software and technology, and trade names, will be approximately $200 million in 2014, $190 million in 2015, $150 million in 2016 and $140 million in each of 2017 and 2018. Annual amortization expense in 2014 with respect to capitalized and purchased software is estimated to approximate $110 million.