Environmental Liabilities and Expenditures (Tables)

3 Months Ended

Mar. 31, 2022

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, 2022. The current portion, $155 million, is included in accrued liabilities and the non-current portion, $933 million, 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. EPA on the CERCLA 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	30	$	427
Third-party sites	69	269
Occidental-operated sites	15	120
Closed or non-operated Occidental sites	52	272
Total	166	$	1,088