Intangible Assets

6 Months Ended

Jun. 30, 2011

Intangible Assets

Intangible Assets

7. Intangible Assets

Intangible assets consisted of the following:

June 30, 2011 (In millions)	Gross Carrying Amount		Accumulated Amortization		Net Book Value
Customer related intangible assets	$	1,646	$	391	$	1,255
Acquired software and technology		378		177		201
Trade names		114		17		97
Capitalized software development costs		744		512		232
Purchased software		372		302		70
Total	$	3,254	$	1,399	$	1,855
December 31, 2010 (In millions)	Gross Carrying Amount		Accumulated Amortization		Net Book Value
Customer related intangible assets	$	1,639	$	343	$	1,296
Acquired software and technology		339		152		187
Trade names		114		14		100
Capitalized software development costs		730		512		218
Purchased software		377		299		78
Total	$	3,199	$	1,320	$	1,879

With respect to the Company's acquired intangible assets at June 30, 2011, annual amortization expense is estimated to be approximately $160 million in 2011, $150 million in each of 2012 and 2013, and $140 million in each of 2014 and 2015.