XML 95 R73.htm IDEA: XBRL DOCUMENT
v3.24.0.1

RETIREMENT AND POSTRETIREMENT BENEFIT PLANS - NARRATIVE (Details) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 USD ($) employee | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
Defined Benefit Plan Disclosure |  |  |
Accrued liabilities for the supplemental retirement plan | $ 330 | $ 288 |
Expenses under provisions of defined contribution and supplemental retirement plans | 221 | 202 | $ 166
Total benefit costs, including postretirement costs | 175 | $ 211 | $ 211
Pension Benefits |  |  |
Defined Benefit Plan Disclosure |  |  |
Expected contribution to defined benefit pension plans in next fiscal year | $ 25 |  |
United States |  |  |
Defined Benefit Plan Disclosure |  |  |
Number of employees accruing benefits under defined benefit plans | employee | 300 |  |
Foreign |  |  |
Defined Benefit Plan Disclosure |  |  |
Number of employees accruing benefits under defined benefit plans | employee | 300 |  |

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
- Definition This element represents the accrued liabilities for supplemental retirement benefit plan which provides restoration of benefit lost due to government limitations on qualified retirement benefits. + References No definition available. + Details
Name: | oxy_SupplementalRetirementPlanSupplementalRetirementPlanAccruedLiabilities
Namespace Prefix: | oxy_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DefinedBenefitPlanDisclosureLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of contribution expected to be received by defined benefit plan from employer in next fiscal year following current fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 18 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480482/715-20-55-18 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (g) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
Name: | us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of cost for defined contribution plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 70 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480794/715-70-50-1 + Details
Name: | us-gaap_DefinedContributionPlanCostRecognized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of cost (reversal of cost) for other postretirement benefits. Excludes pension benefits. + References No definition available. + Details
Name: | us-gaap_OtherPostretirementBenefitExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

X
- Details
Name: | us-gaap_RetirementPlanSponsorLocationAxis=country_US
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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