COMMITMENTS AND CONTINGENCIES (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Dec. 31, 2012
Environmental Matters [Abstract]
Beginning of period	$ 654
Accruals for environmental matters deemed probable and reasonably estimable	54
Environmental payments	(43)
Other	20
End of period	685
Loss Contingency Classification of Accrual [Abstract]
Accrued liabilities	305	304
Other liabilities	380	350
Total environmental liabilities	$ 685