Name:	oxy_DesignatedForecastedSalesOfNaturalGasAsCashFlowHedges
Namespace Prefix:	oxy_
Data Type:	num:energyItemType
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Period Type:	instant

The amount of natural gas held in storage, in cubic feet.

No definition available.

Name:	oxy_NaturalGasHeldInStorage
Namespace Prefix:	oxy_
Data Type:	num:energyItemType
Balance Type:	na
Period Type:	instant

Weighted average strike price related to a group of swap derivatives.

No definition available.

Name:	oxy_SwapAverageStrikePrice
Namespace Prefix:	oxy_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

The average cap rate on a group of price risk derivatives such as caps or collars. A payment or receipt is triggered if the market rate exceeds the cap rate on the contract.

No definition available.

Name:	us-gaap_DerivativeAverageCapPrice
Namespace Prefix:	us-gaap_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

The average floor rate on a group of price risk derivatives such as floors or collars. A payment or receipt is triggered if the market rate falls below the floor rate on the contract.

No definition available.

Name:	us-gaap_DerivativeAverageFloorPrice
Namespace Prefix:	us-gaap_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

- Details

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

Aggregate notional amount of price risk derivatives designated as a cash flow hedge with notional amounts expressed in nonmonetary units. For example the number of barrels specified in a fuel oil forward purchase contract.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4B

-URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5624163-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Notional Amount

-URI http://asc.fasb.org/extlink&oid=6519104

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 1A

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5579245-113959