Marketable Securities (Tables)

9 Months Ended

Sep. 30, 2014

Investments, Debt and Equity Securities [Abstract]

Schedule of 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