CASH, CASH EQUIVALENTS AND MARKETABLE SECURITIES - MATURITIES (Details) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2014
Cost Basis [Abstract]
Due in one year or less	$ 171
Due after one year through five years	993
Due after five years through 10 years	3
Due after 10 years			$ 0
Marketable securities, Cost Basis	1,167	$ 1,110
Fair Value [Abstract]
Due in one year or less	171
Due after one year through five years	995
Due after five years through 10 years	4
Due after 10 years			$ 0
Marketable securities, Fair Value	$ 1,170	$ 1,110