Acquired Intangible Assets

3 Months Ended

Mar. 31, 2013

Acquired Intangible Assets Disclosure [Abstract]

Acquired Intangible Assets

Acquired Intangible Assets

Identifiable acquisition-related intangible assets as of March 31, 2013 and December 31, 2012 were as follows (dollars in millions):

	Gross Carrying Amount		Accumulated Amortization			Net
March 31, 2013
Finite-Lived Intangible Assets:
Customer Contracts and Relationships	$	775	$	(644	)	$	131
Trademarks	55		(21		)	34
Patents and Developed Technology	158		(106		)	52
	988		(771		)	217
Indefinite-Lived Intangible Assets:
Vyvx Trade Name	32		—			32
	$	1,020	$	(771	)	$	249
December 31, 2012
Finite-Lived Intangible Assets:
Customer Contracts and Relationships	$	776	$	(633	)	$	143
Trademarks	55		(17		)	38
Patents and Developed Technology	158		(103		)	55
	989		(753		)	236
Indefinite-Lived Intangible Assets:
Vyvx Trade Name	32		—			32
	$	1,021	$	(753	)	$	268

Acquired finite-lived intangible asset amortization expense was $18 million for the three months ended March 31, 2013 and $25 million for the three months ended March 31, 2012.

At March 31, 2013, the weighted average remaining useful lives of the Company's acquired finite-lived intangible assets was 3 years for customer contracts and relationships, 2.5 years for trademarks and 3.7 years for patents and developed technology.

As of March 31, 2013, estimated amortization expense for the Company’s finite-lived acquisition-related intangible assets over the next five years and thereafter is as follows (dollars in millions):

2013 (remaining nine months)	$	54
2014	61
2015	45
2016	28
2017	13
2018	13
Thereafter	3
	$	217