COMMITMENTS AND CONTINGENCIES (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Dec. 31, 2018
Accrual for Environmental Loss Contingencies [Roll Forward]
Beginning of period	$ 755
Accruals for environmental matters deemed probable and reasonably estimable	86
Environmental liability payments	(28)
Other	(1)
End of period	812
Probable and reasonably estimable environmental liabilities, net of indemnities	14	$ 57
Loss Contingency, Classification of Accrual [Abstract]
Accrued liabilities			$ 175	$ 175
Other liabilities			637	580
Total environmental liabilities	755		$ 812	$ 755
Sale Of Legacy Remediated Property [Member]
Accrual for Environmental Loss Contingencies [Roll Forward]
Probable and reasonably estimable environmental liabilities, net of indemnities	$ (43)