COMMITMENTS AND CONTINGENCIES (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Environmental Matters [Abstract]
Beginning of period	$ 591
Accruals for environmental matters deemed probable and reasonably estimable	95
Environmental liability payments	(94)
End of period	592
Loss Contingency Classification of Accrual [Abstract]
Accrued liabilities	278	$ 278
Other liabilities	314	313
Total environmental liabilities	$ 592	$ 591