CASH, CASH EQUIVALENTS AND MARKETABLE SECURITIES - MATURITIES (Details) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Cost Basis [Abstract]
Due in one year or less	$ 105
Due after one year through five years	1,038
Due after five years through 10 years	2
Due after 10 years			$ 0
Marketable securities, Cost Basis	1,145	$ 1,110
Fair Value [Abstract]
Due in one year or less	105
Due after one year through five years	1,040
Due after five years through 10 years	2
Due after 10 years			$ 0
Marketable securities, Fair Value	$ 1,147	$ 1,110