Additional Cash Tax Benefits Realized From Utilization Of Tax Attributes From Deduction Of Legal Settlement

No definition available.

Name:	oxy_AdditionalCashTaxBenefitsRealizedFromUtilizationOfTaxAttributesFromDeductionOfLegalSettlement
Namespace Prefix:	oxy_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Loss Contingency, Potential Income Tax Expense (Benefit)

+ References

No definition available.

+ Details

Name:	oxy_LossContingencyPotentialIncomeTaxExpenseBenefit
Namespace Prefix:	oxy_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Loss Contingency, Potential Income Tax Expense (Benefit), Accrued Interest

+ References

No definition available.

+ Details

Name:	oxy_LossContingencyPotentialIncomeTaxExpenseBenefitAccruedInterest
Namespace Prefix:	oxy_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Payments For Legal Settlements, Interest Amount

+ References

No definition available.

+ Details

Name:	oxy_PaymentsForLegalSettlementsInterestAmount
Namespace Prefix:	oxy_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- 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_LongTermPurchaseCommitmentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of cash paid for the settlement of litigation or for other legal issues during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 25
-Subparagraph (g)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-25

+ Details

Name:	us-gaap_PaymentsForLegalSettlements
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of income tax refund received from tax jurisdiction.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482913/230-10-50-2A

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 23
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-23

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-22

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 25
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-25

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482913/230-10-50-2

+ Details

Name:	us-gaap_ProceedsFromIncomeTaxRefunds
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	srt_LitigationCaseAxis=oxy_TronoxSettlementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=oxy_AnadarkoPetroleumCorporationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

LAWSUITS, CLAIMS, COMMITMENTS AND CONTINGENCIES (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2025	Dec. 31, 2016	Dec. 31, 2015
Lawsuits, commitments and contingencies
Potential cash tax	$ 1,400
Tronox Settlement
Lawsuits, commitments and contingencies
Payments for settlement			$ 5,200
Additional cash benefits realized from utilization of tax attributes from deduction of legal settlement	500
Interest amount	2,100
Anadarko
Lawsuits, commitments and contingencies
Tentative cash tax refund		$ 881
Potential accrued interest	$ 805