Marketable Securities

9 Months Ended

Sep. 30, 2014

Investments, Debt and Equity Securities [Abstract]

Marketable Securities

Marketable Securities

	September 30, 2014						December 31, 2013
	Cost		Unrealized Gain (Loss)		Fair Value		Cost		Unrealized Gain (Loss)			Fair Value
U.S. government securities	$	39	$	—	$	39	$	27	$	—		$	27
Corporate securities	35				35		30		(1		)	29
Certificates of deposit	25				25		21					21
Other	66		4		70		31		2			33
Total marketable securities	$	165	$	4	$	169	$	109	$	1		$	110

U.S. government securities include bonds issued by government-sponsored agencies and Treasury notes. Corporate securities include primarily debt 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 through ten years total $27, $71 and $1 at September 30, 2014.