Indemnifications acquired company environ liabilities max obligation.

No definition available.

Name:	cvx_IndemnificationsAcquiredCompanyEnvironLiabilitiesMaxObligation
Namespace Prefix:	cvx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Long-term Throughput Agreement, Number of Agreements

+ References

No definition available.

+ Details

Name:	cvx_LongtermThroughputAgreementNumberofAgreements
Namespace Prefix:	cvx_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Oil and Gas, Increase Pipeline and Export Capacity

+ References

No definition available.

+ Details

Name:	cvx_OilandGasIncreasePipelineandExportCapacity
Namespace Prefix:	cvx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Proved Developed and Undeveloped Reserves, Production per Day

+ References

No definition available.

+ Details

Name:	cvx_ProvedDevelopedandUndevelopedReservesProductionperDay
Namespace Prefix:	cvx_
Data Type:	us-types:flowItemType
Balance Type:	na
Period Type:	duration

- 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:	srt_ReserveQuantitiesLineItems
Namespace Prefix:	srt_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

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

- Definition

Amount of investment in equity method investee and investment in and advance to affiliate.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.12)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of Equity in net profit and loss for the period. Give totals for each group. If operations of any controlled companies are different in character from those of the company, group such affiliates (1) within divisions and (2) by type of activities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 320
-Section S99
-Paragraph 6
-Subparagraph (SX 210.12-14(Column C))
-URI http://asc.fasb.org/extlink&oid=50485924&loc=d3e611322-123010

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 320
-Section S99
-Paragraph 6
-Subparagraph (SX 210.12-14(2))
-URI http://asc.fasb.org/extlink&oid=50485924&loc=d3e611322-123010

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 320
-Section S99
-Paragraph 6
-Subparagraph (SX 210.12-14(6))
-URI http://asc.fasb.org/extlink&oid=50485924&loc=d3e611322-123010

+ Details

Name:	us-gaap_InvestmentsInAndAdvancesToAffiliatesAmountOfEquity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	srt_StatementGeographicalAxis=country_VE
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Other Contingencies and Commitments (Details) bbl / d in Thousands	3 Months Ended
	Sep. 30, 2019 USD ($) bbl / d agreement	Dec. 31, 2018 USD ($)	Dec. 31, 2009 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Indemnifications acquirer environmental liabilities max obligation			$ 200,000,000
Number of agreements \| agreement	2
Increase pipeline and export capacity	$ 3,200,000,000
Reserve Quantities [Line Items]
Investments in equity affiliates	$ 38,327,000,000	$ 35,546,000,000
Venezuela
Reserve Quantities [Line Items]
Oil production \| bbl / d	32
Investments in equity affiliates	$ 2,600,000,000
Recognized losses	$ 104,000,000