XML 98 R68.htm IDEA: XBRL DOCUMENT
v3.8.0.1

RETIREMENT AND POSTRETIREMENT BENEFIT PLANS - DEFINED BENEFIT PLANS (Details) | Dec. 31, 2017 employee
--- | ---
Domestic Pension Benefits |
DEFINED BENEFIT PLANS |
Number of employees accruing benefits under defined benefit plans | 500
Foreign Pension Plans |
DEFINED BENEFIT PLANS |
Number of employees accruing benefits under defined benefit plans | 900

X
- Definition This element represents the number of employees currently accruing benefits under defined benefit plans. + References No definition available. + Details
Name: | oxy_DefinedBenefitPlanNumberOfParticipatingEmployees
Namespace Prefix: | oxy_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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

X
- Details
Name: | us-gaap_RetirementPlanTypeAxis=us-gaap_DomesticPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RetirementPlanTypeAxis=us-gaap_ForeignPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |