CASH, CASH EQUIVALENTS AND MARKETABLE SECURITIES - MATURITIES (Details) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Cost Basis [Abstract]
Due in one year or less	$ 283
Due after one year through five years	1,108
Due after five years through 10 years	7
Due after 10 years	0
Marketable securities, Cost Basis	1,398	$ 1,260
Fair Value [Abstract]
Due in one year or less	283
Due after one year through five years	1,118
Due after five years through 10 years	7
Due after 10 years	0
Marketable securities, Fair Value	$ 1,408	$ 1,255