XML 56 R45.htm IDEA: XBRL DOCUMENT
v3.21.1

Derivatives - Interest-Rate Derivatives (Details) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2021 USD ($)
Interest Rate Swap, 6.348% |
Derivative [Line Items] |
Notional Principal Amount | $ 400
Weighted-Average Interest Rate | 6.348%
Interest Rate Swap, 6.662% |
Derivative [Line Items] |
Notional Principal Amount | $ 350
Weighted-Average Interest Rate | 6.662%
Interest Rate Swap, 6.709% |
Derivative [Line Items] |
Notional Principal Amount | $ 275
Weighted-Average Interest Rate | 6.709%
Interest Rate Swap, 6.445% |
Derivative [Line Items] |
Notional Principal Amount | $ 450
Weighted-Average Interest Rate | 6.445%
Interest Rate Swaps |
Derivative [Line Items] |
Net cash payments related to settlements | $ 47
Collateral paid with respect to interest rate swap agreements | $ 92

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

X
- Definition Average fixed interest rate related to the group of interest rate derivatives. + References No definition available. + Details
Name: | us-gaap_DerivativeAverageFixedInterestRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
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_DerivativeLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Nominal or face amount used to calculate payment on derivative. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5580258-113959 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5579245-113959 + Details
Name: | us-gaap_DerivativeNotionalAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- Definition The net cash outflow or inflow from derivative instruments during the period, which are classified as financing activities, excluding those designated as hedging instruments. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04(a)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24072-122690 + Details
Name: | us-gaap_PaymentsForProceedsFromDerivativeInstrumentFinancingActivities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=oxy_InterestRateSwapMandatoryTerminationDateSeptember20216348Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=oxy_InterestRateSwapMandatoryTerminationDateSeptember20216662Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=oxy_InterestRateSwapMandatoryTerminationDateSeptember20226709Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=oxy_InterestRateSwapMandatoryTerminationDateSeptember20236.445Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_InterestRateSwapMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |