ENVIRONMENTAL LIABILITIES AND EXPENDITURES (Tables)

12 Months Ended

Dec. 31, 2017

ENVIRONMENTAL LIABILITIES AND EXPENDITURES

Schedule of current and non-current environmental remediation reserves by categories of sites

($ amounts in millions)	2017			2016			2015
	Number of Sites	Reserve Balance		Number of Sites	Reserve Balance		Number of Sites	Reserve Balance
NPL sites	34	$	457	33	$	461	34	$	27
Third-party sites	70	157		68	163		66	128
Occidental-operated sites	15	108		17	106		18	107
Closed or non-operated Occidental sites	29	143		29	140		31	124
Total	148	$	865	147	$	870	149	$	386

Schedule of environmental cost for each segment

(in millions)	2017		2016		2015
Operating Expenses
Oil and Gas	$	68	$	65	$	93
Chemical	78		75		74
Midstream and Marketing	15		11		13
	$	161	$	151	$	180
Capital Expenditures
Oil and Gas	$	77	$	43	$	122
Chemical	18		25		41
Midstream and Marketing	6		5		4
	$	101	$	73	$	167
Remediation Expenses
Corporate	$	39	$	61	$	117