CASH, CASH EQUIVALENTS AND MARKETABLE SECURITIES (Tables)

12 Months Ended

Dec. 31, 2019

Cash, Cash Equivalents, and Short-term Investments [Abstract]

Schedule of Realized Gain (Loss) [Table Text Block]

Proceeds from sales of marketable securities were $1.7 billion, $1.1 billion and $1.4 billion in 2019, 2018, and 2017.

Schedule of Debt Investment Maturities [Table Text Block]

Maturities for marketable securities (in millions):

December 31, 2019	Cost Basis		Fair Value
Due in one year or less	$	164	$	165
Due after one year through five years	1,102		1,114
Due after five years through 10 years	16		16
Total	$	1,282	$	1,295