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v3.20.4

Information Relating to the Consolidated Statement of Cash Flows - Narrative (Details) - USD ($) $ in Billions | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Upstream | Operating Segments |  |
Segment Reporting Information [Line Items] |  |
Non cash transaction in operating segments | $ 4.8 | $ 9.3

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- Definition Non cash increase transaction in operating segments + References No definition available. + Details
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Namespace Prefix: | cvx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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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
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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: |

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