Environmental Liabilities and Expenditures (Tables)

12 Months Ended

Dec. 31, 2014

Environmental Liabilities and Expenditures

Environmental loss contingencies by categories of sites

($ amounts in millions)	2014			2013			2012
	Number of Sites	Reserve Balance		Number of Sites	Reserve Balance		Number of Sites	Reserve Balance
NPL sites	30	$	23	31	$	25	35	$	54
Third-party sites	67	101		74	83		75	84
Occidental-operated sites	17	107		20	118		22	123
Closed or non-operated Occidental sites	31	103		32	104		29	83
Total	145	$	334	157	$	330	161	$	344

Environmental reserve activity

(in millions)	2014			2013			2012
Balance — Beginning of Year	$	330		$	344		$	360
Remediation expenses and interest accretion	79			60			56
Spin-off of California Resources	(7		)	—			—
Payments	(68		)	(74		)	(72		)
Balance — End of Year	$	334		$	330		$	344

Environmental cost for each segment

(in millions)	2014		2013		2012
Operating Expenses
Oil and Gas	$	103	$	100	$	116
Chemical	80		75		70
Midstream and Marketing	11		13		13
	$	194	$	188	$	199
Capital Expenditures
Oil and Gas	$	143	$	67	$	79
Chemical	35		14		18
Midstream and Marketing	11		5		8
	$	189	$	86	$	105
Remediation Expenses
Corporate	$	79	$	60	$	56