Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2012

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of amortizable and unamortizable intangible assets

The Company's amortizable and unamortizable intangible assets at December 31, 2012 and 2011 are as follows:

	Cost				Accumulated Amortization
	2012		2011		2012		2011
Amortizable intangible assets:
Patents	$	14	$	15	$	8	$	8
Licenses	47		41		17		12
Customer relationships	255		135		61		44
Technical knowledge	48		25		15		11
Other	29		24		22		16
Total amortizable intangible assets	$	393	$	240	$	123	$	91
Unamortizable intangible assets:
Goodwill	$	717	$	492	$	26	$	26
Trademarks and trade names	20		18		8		8
Total unamortizable intangible assets	$	737	$	510	$	34	$	34

Schedule of change in net goodwill

Changes in net goodwill for the years ended December 31, 2012 and 2011 are as follows:

	2012		2011
Balance, beginning of year	$	466	$	438
Acquisitions	222		30
Impact of foreign currency exchange rates	3		(2		)
Balance, end of year	$	691	$	466