XML 66 R40.htm IDEA: XBRL DOCUMENT v3.22.0.1
ENVIRONMENTAL LIABILITIES AND EXPENDITURES (Tables)
12 Months Ended
Dec. 31, 2021
Environmental Remediation Obligations [Abstract]  
Schedule of current and non-current environmental remediation reserves by categories of sites
20212020
millions, except number of sitesNumber of SitesRemediation BalanceNumber of SitesRemediation Balance
NPL sites30 $427 35 $447 
Third-party sites69 273 69 293 
Occidental-operated sites15 122 17 144 
Closed or non-operated Occidental sites51 277 49 267 
Total165 $1,099 170 $1,151