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DERIVATIVES - INTEREST-RATE DERIVATIVES (Details) - Interest Rate Swap $ in Millions | 12 Months Ended
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Dec. 31, 2022 USD ($)
Derivative [Line Items] |
Interest rate swaps termination fee | $ 144
Mandatory termination, collateral and cash payment | 255
Periodic settlement amount | 35
Derivative instrument, collateral returned | $ 179

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- Definition Derivative Instrument, Collateral Returned (Paid) + References No definition available. + Details
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Namespace Prefix: | oxy_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Derivative Instrument, Periodic Payment + References No definition available. + Details
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Namespace Prefix: | oxy_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Payments For Mandatory Termination Of Interest Rate + References No definition available. + Details
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Namespace Prefix: | oxy_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Payments for (Proceeds from) Derivative Instrument, Financing Activities, Excluding Collateral Returned + References No definition available. + Details
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Namespace Prefix: | oxy_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |