Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2012

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in Carrying Amount of Goodwill

The changes in carrying amount of goodwill for the years ended December 31, 2012 and 2011 are as follows (in millions):

Balance as of December 31, 2010	$	37
Goodwill acquired	48
Effect of currency translation adjustment	(3		)
Balance as of December 31, 2011	82
Goodwill acquired	505
Balance as of December 31, 2012	$	587

Intangible Assets

Intangible assets consist of the following (in millions):

		December 31, 2012							December 31, 2011
	Useful lives from date of acquisitions (in years)	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Amortizable intangible assets:
Acquired patents	3 - 18	$	684	$	(53	)	$	631	$	51	$	(4	)	$	47
Acquired technology	2 - 10	133		(32		)	101		38		(15		)	23
Tradename and other	2 - 7	94		(25		)	69		23		(13		)	10
Total		$	911	$	(110	)	$	801	$	112	$	(32	)	$	80

Estimated Amortization Expense for Unamortized Acquired Intangible Assets

As of December 31, 2012, expected amortization expense for the unamortized acquired intangible assets for the next five years and thereafter is as follows (in millions):

2013	$	126
2014	120
2015	112
2016	102
2017	86
Thereafter	255
Total	$	801