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FINANCIAL INSTRUMENTS (Derivative) (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	$ 4,217	$ 4,526
Restricted Cash and Cash Equivalents, Current	110	52
Restricted Cash and Cash Equivalents, Noncurrent	128	132
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	4,455	4,710	$ 4,420	$ 341
Credit Derivative, Maximum Exposure, Undiscounted	16
Bank Time Deposits [Member]
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	$ 2,300	$ 2,900