CASH, CASH EQUIVALENTS AND MARKETABLE SECURITIES - MATURITIES (Details) - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015
Cost Basis [Abstract]
Due in one year or less	$ 363
Due after one year through five years	1,134
Due after five years through 10 years	16
Due after 10 years	0
Marketable securities, Cost Basis	1,513	$ 1,260
Fair Value [Abstract]
Due in one year or less	363
Due after one year through five years	1,147
Due after five years through 10 years	16
Due after 10 years	0
Marketable securities, Fair Value	$ 1,526	$ 1,255