ENVIRONMENTAL LIABILITIES AND EXPENDITURES (Tables)

12 Months Ended

Dec. 31, 2019

Environmental Remediation Obligations [Abstract]

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

	2019			2018
millions, except number of sites	Number of Sites	Remediation Balance		Number of Sites	Remediation Balance
NPL sites	36	$	463	34	$	458
Third-party sites	74	311		68	168
Occidental-operated sites	17	154		14	115
Closed or non-operated Occidental sites	50	269		29	141
Total	177	$	1,197	145	$	882