XML 46 R35.htm IDEA: XBRL DOCUMENT
v3.19.1

Revenue Recognition - Disaggregation of revenue (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2019 | Mar. 31, 2018
Disaggregation of revenue |  |
Revenue from customers | $ 4,004 | $ 3,763
Consolidated | 3,435 | 3,694
United States |  |
Disaggregation of revenue |  |
Consolidated | 2,451 | 2,696
Middle East |  |
Disaggregation of revenue |  |
Consolidated | 1,005 | 985
Latin America |  |
Disaggregation of revenue |  |
Consolidated | 182 | 226
Other International |  |
Disaggregation of revenue |  |
Consolidated | 19 | 21
Eliminations |  |
Disaggregation of revenue |  |
Revenue from customers | (222) | (234)
Consolidated | (222) | (234)
Eliminations | United States |  |
Disaggregation of revenue |  |
Revenue from customers | 0 | 0
Eliminations | Middle East |  |
Disaggregation of revenue |  |
Revenue from customers | 0 | 0
Eliminations | Latin America |  |
Disaggregation of revenue |  |
Revenue from customers | 0 | 0
Eliminations | Other International |  |
Disaggregation of revenue |  |
Revenue from customers | 0 | 0
Oil and Gas Segment |  |
Disaggregation of revenue |  |
Revenue from customers | 2,351 | 2,454
Oil and Gas Segment | Oil |  |
Disaggregation of revenue |  |
Revenue from customers | 2,098 | 2,190
Oil and Gas Segment | NGL |  |
Disaggregation of revenue |  |
Revenue from customers | 143 | 140
Oil and Gas Segment | Gas |  |
Disaggregation of revenue |  |
Revenue from customers | 130 | 121
Oil and Gas Segment | Other |  |
Disaggregation of revenue |  |
Revenue from customers | (20) | 3
Oil and Gas Segment | United States |  |
Disaggregation of revenue |  |
Revenue from customers | 1,309 | 1,391
Oil and Gas Segment | United States | Oil |  |
Disaggregation of revenue |  |
Revenue from customers | 1,205 | 1,247
Oil and Gas Segment | United States | NGL |  |
Disaggregation of revenue |  |
Revenue from customers | 78 | 89
Oil and Gas Segment | United States | Gas |  |
Disaggregation of revenue |  |
Revenue from customers | 47 | 52
Oil and Gas Segment | United States | Other |  |
Disaggregation of revenue |  |
Revenue from customers | (21) | 3
Oil and Gas Segment | Middle East |  |
Disaggregation of revenue |  |
Revenue from customers | 903 | 889
Oil and Gas Segment | Middle East | Oil |  |
Disaggregation of revenue |  |
Revenue from customers | 758 | 773
Oil and Gas Segment | Middle East | NGL |  |
Disaggregation of revenue |  |
Revenue from customers | 65 | 51
Oil and Gas Segment | Middle East | Gas |  |
Disaggregation of revenue |  |
Revenue from customers | 79 | 65
Oil and Gas Segment | Middle East | Other |  |
Disaggregation of revenue |  |
Revenue from customers | 1 | 0
Oil and Gas Segment | Latin America |  |
Disaggregation of revenue |  |
Revenue from customers | 139 | 174
Oil and Gas Segment | Latin America | Oil |  |
Disaggregation of revenue |  |
Revenue from customers | 135 | 170
Oil and Gas Segment | Latin America | NGL |  |
Disaggregation of revenue |  |
Revenue from customers | 0 | 0
Oil and Gas Segment | Latin America | Gas |  |
Disaggregation of revenue |  |
Revenue from customers | 4 | 4
Oil and Gas Segment | Latin America | Other |  |
Disaggregation of revenue |  |
Revenue from customers | 0 | 0
Oil and Gas Segment | Other International |  |
Disaggregation of revenue |  |
Revenue from customers | 0 | 0
Oil and Gas Segment | Other International | Oil |  |
Disaggregation of revenue |  |
Revenue from customers | 0 | 0
Oil and Gas Segment | Other International | NGL |  |
Disaggregation of revenue |  |
Revenue from customers | 0 | 0
Oil and Gas Segment | Other International | Gas |  |
Disaggregation of revenue |  |
Revenue from customers | 0 | 0
Oil and Gas Segment | Other International | Other |  |
Disaggregation of revenue |  |
Revenue from customers | 0 | 0
Oil and Gas Segment | Eliminations |  |
Disaggregation of revenue |  |
Revenue from customers | 0 | 0
Oil and Gas Segment | Eliminations | Oil |  |
Disaggregation of revenue |  |
Revenue from customers | 0 | 0
Oil and Gas Segment | Eliminations | NGL |  |
Disaggregation of revenue |  |
Revenue from customers | 0 | 0
Oil and Gas Segment | Eliminations | Gas |  |
Disaggregation of revenue |  |
Revenue from customers | 0 | 0
Oil and Gas Segment | Eliminations | Other |  |
Disaggregation of revenue |  |
Revenue from customers | 0 | 0
Chemical Segment |  |
Disaggregation of revenue |  |
Revenue from customers | 1,055 | 1,122
Chemical Segment | United States |  |
Disaggregation of revenue |  |
Revenue from customers | 993 | 1,049
Chemical Segment | Middle East |  |
Disaggregation of revenue |  |
Revenue from customers | 0 | 0
Chemical Segment | Latin America |  |
Disaggregation of revenue |  |
Revenue from customers | 43 | 52
Chemical Segment | Other International |  |
Disaggregation of revenue |  |
Revenue from customers | 19 | 21
Chemical Segment | Eliminations |  |
Disaggregation of revenue |  |
Revenue from customers | 0 | 0
Midstream Segment |  |
Disaggregation of revenue |  |
Revenue from customers | 251 | 352
Midstream Segment | Gas Processing |  |
Disaggregation of revenue |  |
Revenue from customers | 207 | 233
Midstream Segment | Pipelines |  |
Disaggregation of revenue |  |
Revenue from customers |  | 94
Midstream Segment | Power and Other |  |
Disaggregation of revenue |  |
Revenue from customers | 44 | 25
Midstream Segment | United States |  |
Disaggregation of revenue |  |
Revenue from customers | 149 | 256
Midstream Segment | United States | Gas Processing |  |
Disaggregation of revenue |  |
Revenue from customers | 105 | 137
Midstream Segment | United States | Pipelines |  |
Disaggregation of revenue |  |
Revenue from customers |  | 94
Midstream Segment | United States | Power and Other |  |
Disaggregation of revenue |  |
Revenue from customers | 44 | 25
Midstream Segment | Middle East |  |
Disaggregation of revenue |  |
Revenue from customers | 102 | 96
Midstream Segment | Middle East | Gas Processing |  |
Disaggregation of revenue |  |
Revenue from customers | 102 | 96
Midstream Segment | Middle East | Pipelines |  |
Disaggregation of revenue |  |
Revenue from customers |  | 0
Midstream Segment | Middle East | Power and Other |  |
Disaggregation of revenue |  |
Revenue from customers | 0 | 0
Midstream Segment | Latin America |  |
Disaggregation of revenue |  |
Revenue from customers | 0 | 0
Midstream Segment | Latin America | Gas Processing |  |
Disaggregation of revenue |  |
Revenue from customers | 0 | 0
Midstream Segment | Latin America | Pipelines |  |
Disaggregation of revenue |  |
Revenue from customers |  | 0
Midstream Segment | Latin America | Power and Other |  |
Disaggregation of revenue |  |
Revenue from customers | 0 | 0
Midstream Segment | Other International |  |
Disaggregation of revenue |  |
Revenue from customers | 0 | 0
Midstream Segment | Other International | Gas Processing |  |
Disaggregation of revenue |  |
Revenue from customers | 0 | 0
Midstream Segment | Other International | Pipelines |  |
Disaggregation of revenue |  |
Revenue from customers |  | 0
Midstream Segment | Other International | Power and Other |  |
Disaggregation of revenue |  |
Revenue from customers | 0 | 0
Midstream Segment | Eliminations |  |
Disaggregation of revenue |  |
Revenue from customers | 0 | 0
Midstream Segment | Eliminations | Gas Processing |  |
Disaggregation of revenue |  |
Revenue from customers | 0 | 0
Midstream Segment | Eliminations | Pipelines |  |
Disaggregation of revenue |  |
Revenue from customers |  | 0
Midstream Segment | Eliminations | Power and Other |  |
Disaggregation of revenue |  |
Revenue from customers | $ 0 | $ 0

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

X
- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130543-203045 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130539-203045 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130545-203045 + Details
Name: | us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8933-108599 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 + Details
Name: | us-gaap_Revenues
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

X
- Details
Name: | srt_StatementGeographicalAxis=us-gaap_MiddleEastMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=srt_LatinAmericaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=oxy_OtherCountriesExcludingUsMiddleEastLatinAmericaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ConsolidationItemsAxis=us-gaap_IntersegmentEliminationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=oxy_OilAndGasSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=srt_OilReservesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=srt_NaturalGasLiquidsReservesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=srt_NaturalGasReservesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=us-gaap_ProductAndServiceOtherMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=oxy_ChemicalSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=oxy_MidstreamSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=oxy_GasProcessingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=oxy_PipelineMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=oxy_PowerAndOtherMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |