COMMITMENTS AND CONTINGENCIES (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Loss Contingency, Classification of Accrual [Abstract]
Accrued liabilities	$ 225,000,000	$ 225,000,000
Other liabilities	393,000,000	435,000,000
Total environmental liabilities	618,000,000	660,000,000	$ 709,000,000
Environmental Matters [Abstract]
Beginning of period	660,000,000	709,000,000	755,000,000
Accruals for environmental matters deemed probable and reasonably estimable	168,000,000	173,000,000	213,000,000
Environmental liability payments		(216,000,000)	(256,000,000)
Other	0	(6,000,000)	(3,000,000)
End of period	$ 618,000,000	$ 660,000,000	$ 709,000,000