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FINANCIAL INSTRUMENTS (Derivative) (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	$ 2,020	$ 4,217
Restricted Cash and Cash Equivalents, Current	100	110
Restricted Cash and Cash Equivalents, Noncurrent	158	128
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	2,278	4,455	$ 4,710	$ 4,420
Credit Derivative, Maximum Exposure, Undiscounted	74
Bank Time Deposits [Member]
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	$ 1,300	$ 2,300