Note 9. Marketable Securities

	March 31, 2012						December 31, 2011
			Unrealized		Fair				Unrealized		Fair
	Cost		Gains		Value		Cost		Gains		Value
U.S. government securities	$	8	$	-	$	8	$	10	$	-	$	10
Corporate securities		10				10		8				8
Certificates of deposit		13				13		13				13
Other		25		2		27		25				25
Total marketable securities	$	56	$	2	$	58	$	56	$	-	$	56

U.S. government securities include bonds issued by government-sponsored agencies and Treasury notes. Corporate securities include both debt and equity securities. Other consists of investments in mutual and index funds. U.S. government securities, corporate debt and certificates of deposit maturing in one year or less, after one year through five years and after five years total $14, $9 and $8 at March 31, 2012.

Proceeds from liquidating available-for-sale marketable securities prior to their scheduled maturities were $1 and $5 in the first quarters of 2012 and 2011. The related gains and losses realized on this activity were not significant.