ENVIRONMENTAL LIABILITIES AND EXPENDITURES (Details 1) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Environmental reserve activity
Balance - Beginning of Year	$ 334	$ 330	$ 344
Remediation expenses and interest accretion	117	79	60
Spin-off of California Resources		(7)
Payments	(65)	(68)	(74)
Balance - End of Year	$ 386	$ 334	$ 330