XML 120 R95.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Accounting for Suspended Exploratory Wells - Narrative (Details) $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2018 USD ($) Well Project | Dec. 31, 2017 USD ($) Project | Dec. 31, 2016 USD ($) Project
Projects with Exploratory Well Costs Capitalized for More than One Year [Line Items] |  |  |
Capitalized exploratory well costs that have been capitalized for period greater than one year | $ | $ 3,361 | $ 3,395 | $ 3,095
Number of projects with exploratory well costs that have been capitalized for a period greater than one year (in projects) | Project | 30 | 32 | 35
Expected period for decision on the recognition of proved reserves | 5 years |  |
Capitalized exploratory well costs that have been capitalized for period greater than one year, number of wells | Well | 153 |  |
Drilling Activity |  |  |
Projects with Exploratory Well Costs Capitalized for More than One Year [Line Items] |  |  |
Capitalized exploratory well costs that have been capitalized for period greater than one year | $ | $ 1,585 |  |
Number of projects with exploratory well costs that have been capitalized for a period greater than one year (in projects) | Project | 14 |  |
No Drilling Activity |  |  |
Projects with Exploratory Well Costs Capitalized for More than One Year [Line Items] |  |  |
Capitalized exploratory well costs that have been capitalized for period greater than one year | $ | $ 1,776 |  |
Number of projects with exploratory well costs that have been capitalized for a period greater than one year (in projects) | Project | 16 |  |
Undergoing Front End Engineering and Design with Final Investment Decision Expected |  |  |
Projects with Exploratory Well Costs Capitalized for More than One Year [Line Items] |  |  |
Capitalized exploratory well costs that have been capitalized for period greater than one year | $ | $ 672 |  |
Number of projects with exploratory well costs that have been capitalized for a period greater than one year (in projects) | Project | 3 |  |
Undergoing front-end engineering and design with final investment decision expected in three years | 4 years |  |
Development Concept Under Review by Government |  |  |
Projects with Exploratory Well Costs Capitalized for More than One Year [Line Items] |  |  |
Capitalized exploratory well costs that have been capitalized for period greater than one year | $ | $ 93 |  |
Number of projects with exploratory well costs that have been capitalized for a period greater than one year (in projects) | Project | 1 |  |
Reviewing Development Alternatives |  |  |
Projects with Exploratory Well Costs Capitalized for More than One Year [Line Items] |  |  |
Capitalized exploratory well costs that have been capitalized for period greater than one year | $ | $ 963 |  |
Number of projects with exploratory well costs that have been capitalized for a period greater than one year (in projects) | Project | 8 |  |
Miscellaneous Activities for Projects with Smaller Amounts Suspended |  |  |
Projects with Exploratory Well Costs Capitalized for More than One Year [Line Items] |  |  |
Capitalized exploratory well costs that have been capitalized for period greater than one year | $ | $ 48 |  |
Number of projects with exploratory well costs that have been capitalized for a period greater than one year (in projects) | Project | 4 |  |

X
- Definition Expected period for decision on the recognition of proved reserves. + References No definition available. + Details
Name: | cvx_ExpectedPeriodForDecisionOnRecognitionOfProvedReserves
Namespace Prefix: | cvx_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Exploratory Wells That Have Been Capitalized For Period Greater Than One Year, Number Of Wells With Multiple Completions, Gross + References No definition available. + Details
Name: | cvx_ExploratoryWellsThatHaveBeenCapitalizedForPeriodGreaterThanOneYearNumberOfWellsWithMultipleCompletionsGross
Namespace Prefix: | cvx_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Undergoing front-end engineering and design with final investment decision expected in three years. + References No definition available. + Details
Name: | cvx_UndergoingFrontEndEngineeringAndDesignWithFinalInvestmentDecisionExpectedInThreeYears
Namespace Prefix: | cvx_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of exploratory well costs that have been capitalized for a period of greater than one year after the completion of drilling. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 1B -Subparagraph b -URI http://asc.fasb.org/extlink&oid=68064819&loc=SL6806780-109447 + Details
Name: | us-gaap_CapitalizedExploratoryWellCostsThatHaveBeenCapitalizedForPeriodGreaterThanOneYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The number of projects for which exploratory well costs have been capitalized for a period of greater than one year after the completion of drilling. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 1B -Subparagraph b -URI http://asc.fasb.org/extlink&oid=68064819&loc=SL6806780-109447 + Details
Name: | us-gaap_ProjectsThatHaveExploratoryWellCostsThatHaveBeenCapitalizedForPeriodGreaterThanOneYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
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_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | cvx_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearByDifferentActivitiesAxis=cvx_DrillingActivityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | cvx_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearByDifferentActivitiesAxis=cvx_NoDrillingActivityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis=cvx_UndergoingFrontEndEngineeringAndDesignWithFinalInvestmentDecisionExpectedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis=cvx_DevelopmentConceptUnderReviewByGovernmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis=cvx_ReviewingDevelopmentAlternativesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis=cvx_MiscellaneousActivitiesforProjectswithSmallerAmountsSuspendedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |