COMMITMENTS AND CONTINGENCIES (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2018	Dec. 31, 2017
Loss Contingency Classification of Accrual [Abstract]
Accrued liabilities				$ 175	$ 226
Other liabilities				580	369
Total environmental liabilities	$ 595	$ 595	$ 518	$ 755	$ 595
Environmental Matters [Abstract]
Beginning of period	595	511	518
Accruals for environmental matters deemed probable and reasonably estimable	395	287	195
Environmental liability payments	(218)	(212)	(228)
Other	(17)	9	26
End of period	$ 755	$ 595	$ 511