FAIR VALUE MEASUREMENTS - MATURITIES FOR MARKETABLE SECURITIES (Details) $ in Millions	Jun. 30, 2020 USD ($)
Cost Basis
Due in one year or less	$ 133
Due after one year through five years	1,063
Due after five years through 10 years	60
Total	1,256
Fair Value
Due in one year or less	134
Due after one year through five years	1,094
Due after five years through 10 years	61
Total	$ 1,289