Marketable Securities (Tables)

6 Months Ended

Jun. 30, 2012

Summary of Marketable Securities

	June 30, 2012						December 31, 2011
			Unrealized		Fair				Fair
	Cost		Gains		Value		Cost		Value
U.S. government securities	$	8	$	-	$	8	$	10	$	10
Corporate securities		11				11		8		8
Certificates of deposit		12				12		13		13
Other		28		1		29		25		25
Total marketable securities	$	59	$	1	$	60	$	56	$	56