XML 92 R62.htm IDEA: XBRL DOCUMENT
v3.8.0.1

LAWSUITS, CLAIMS, COMMITMENTS AND CONTINGENCIES _Lega Matters (Details) | 12 Months Ended
--- | ---
Dec. 31, 2017
LAWSUITS, CLAIMS, COMMITMENTS AND CONTINGENCIES |
Claim to a settlement amount (as a percent) | 40.00%

X
- Definition Percentage of claim to a settlement amount of a legal case. + References No definition available. + Details
Name: | oxy_PercentageOfClaimToSettlementAmount
Namespace Prefix: | oxy_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration