Acquired Intangible Assets

6 Months Ended

Jun. 30, 2013

Acquired Intangible Assets Disclosure [Abstract]

Acquired Intangible Assets

Acquired Intangible Assets

Identifiable acquisition-related intangible assets as of June 30, 2013 and December 31, 2012, were as follows (dollars in millions):

	Gross Carrying Amount		Accumulated Amortization			Net
June 30, 2013
Finite-Lived Intangible Assets:
Customer Contracts and Relationships	$	776	$	(655	)	$	121
Trademarks	55		(24		)	31
Patents and Developed Technology	158		(110		)	48
	989		(789		)	200
Indefinite-Lived Intangible Assets:
Vyvx Trade Name	32		—			32
	$	1,021	$	(789	)	$	232
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 and $36 million for the three and six months ended June 30, 2013 and $25 million and $50 million for the three and six months ended June 30, 2012.

At June 30, 2013, the weighted average remaining useful lives of the Company's acquired finite-lived intangible assets was 2.7 years for customer contracts and relationships, 2.3 years for trademarks and 3.5 years for patents and developed technology.

As of June 30, 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 six months)	$	37
2014	61
2015	45
2016	28
2017	13
2018	13
Thereafter	3
	$	200