CASH, CASH EQUIVALENTS AND MARKETABLE SECURITIES - MATURITIES (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Cost Basis [Abstract]
Due in one year or less	$ 182
Due after one year through five years	1,055
Due after five years through 10 years	14
Due after 10 years	9
Marketable securities, Cost Basis	1,260	$ 1,110
Fair Value [Abstract]
Due in one year or less	182
Due after one year through five years	1,050
Due after five years through 10 years	14
Due after 10 years	9
Marketable securities, Fair Value	$ 1,255	$ 1,110