Marketable Securities (Tables)

9 Months Ended

Sep. 30, 2015

Investments, Debt and Equity Securities [Abstract]

Schedule of Marketable Securities

	September 30, 2015						December 31, 2014
	Cost		Unrealized Gain (Loss)		Fair Value		Cost		Unrealized Gain (Loss)		Fair Value
U.S. government securities	$	39	$	—	$	39	$	38	$	—	$	38
Corporate securities	41				41		36				36
Certificates of deposit	17				17		23				23
Other	60				60		67		5		72
Total marketable securities	$	157	$	—	$	157	$	164	$	5	$	169