Environmental Liabilities and Expenditures (Tables)

3 Months Ended

Mar. 31, 2020

Environmental Remediation Obligations [Abstract]

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

The following table presents Occidental’s current and non-current environmental remediation liabilities as of March 31, 2020. The current portion, $160 million, is included in accrued liabilities and the non-current portion, $1.0 billion, in deferred credits and other liabilities - environmental remediation liabilities.

Occidental’s environmental remediation sites are grouped into four categories: sites listed or proposed for listing by the U.S. Environmental Protection Agency (EPA) on the CERCLA National Priorities List (NPL) and three categories of non-NPL sites — third-party sites, Occidental-operated sites and closed or non-operated Occidental sites.

millions, except number of sites	Number of Sites	Remediation Balance
NPL sites	37	$	459
Third-party sites	73	301
Occidental-operated sites	17	152
Closed or non-operated Occidental sites	50	265
Total	177	$	1,177