FAIR VALUE MEASUREMENTS - MATURITIES FOR MARKETABLE SECURITIES (Details) $ in Millions	Jun. 30, 2017 USD ($)
Cost Basis
Due in one year or less	$ 253
Due after one year through five years	1,453
Due after five years through 10 years	19
Due after 10 years	0
Total	1,725
Fair Value
Due in one year or less	252
Due after one year through five years	1,453
Due after five years through 10 years	19
Due after 10 years	0
Total	$ 1,724