Intangible Assets and Goodwill (Tables)

12 Months Ended

Dec. 31, 2014

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets

Amortized intangible assets are comprised of the following: 

	2014				2013
December 31	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Intangible assets:
Completed technology	$	37	$	27	$	24	$	24
Patents	8		4		8		3
Customer-related	15		8		6		6
Other intangibles	17		15		15		14
	$	77	$	54	$	53	$	47

Goodwill

The following table displays a rollforward of the carrying amount of goodwill by segment from January 1, 2013 to December 31, 2014: 

	Products		Services		Total
Balance as of January 1, 2013
Aggregate goodwill acquired	$	249	$	112	$	361
Accumulated impairment losses	—		—		—
Goodwill, net of impairment losses	249		112		361
Balance as of December 31, 2013
Aggregate goodwill acquired/disposed	249		112		361
Accumulated impairment losses	—		—		—
Goodwill, net of impairment losses	249		112		361
Goodwill acquired	15		7		22
Balance as of December 31, 2014
Aggregate goodwill acquired	264		119		383
Accumulated impairment losses	—		—		—
Goodwill, net of impairment losses	$	264	$	119	$	383