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.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479907/805-20-50-5

+ Details

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

- Definition

Amount of structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 360
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482099/360-10-50-1

+ Details

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

- Definition

The amount deducted from an entities' taxes, reflecting a percentage of an amount invested in certain assets spread over the useful life of those assets; includes deferred investment tax credits.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-28

+ Details

Name:	us-gaap_InvestmentTaxCredit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Battery Energy Storage System Capacity (in megawatts)

+ References

No definition available.

+ Details

Name:	vistra_BatteryEnergyStorageSystemCapacity
Namespace Prefix:	vistra_
Data Type:	dtr-types1:powerItemType
Balance Type:	na
Period Type:	instant

- Definition

Contract, Duration, Number Of Years

+ References

No definition available.

+ Details

Name:	vistra_ContractDurationNumberOfYears
Namespace Prefix:	vistra_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Electricity Generation Facility Capacity (in megawatts)

+ References

No definition available.

+ Details

Name:	vistra_ElectricityGenerationFacilityCapacity
Namespace Prefix:	vistra_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

- Definition

Planned Battery Energy System Capacity (in megawatts)

+ References

No definition available.

+ Details

Name:	vistra_PlannedBatteryEnergySystemCapacity
Namespace Prefix:	vistra_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

- Definition

Planned Electricity Generation Facility Capacity

+ References

No definition available.

+ Details

Name:	vistra_PlannedElectricityGenerationFacilityCapacity
Namespace Prefix:	vistra_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=vistra_TexasSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=vistra_VistraCorpMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis=vistra_SolarGenerationAndBatteryEnergyStorageProjectsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=vistra_EastSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=vistra_WestSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis=vistra_MossLandingBatteryEnergyStorageSystemPhaseIMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=vistra_MossLandingPowerPlantBatteryStorageProjectMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis=vistra_MossLandingBatteryEnergyStorageSystemPhaseIIMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis=vistra_MossLandingBatteryEnergyStorageSystemPhaseIIIMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Development of Generation Facilities - Narrative (Details) $ in Millions	1 Months Ended
	Jan. 31, 2022 USD ($) MW	May 31, 2020 MW	Jun. 30, 2018 MW	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Apr. 30, 2022 MW	Feb. 28, 2022 MW	Sep. 30, 2021 MW
Business Acquisition [Line Items]
Construction work in progress \| $				$ 522	$ 522
Texas \| Vistra Corp.
Business Acquisition [Line Items]
Electricity generation facility capacity	158						158
Battery energy storage system capacity						260
Texas \| Vistra Corp. \| Solar Generation and Battery Energy Storage Projects
Business Acquisition [Line Items]
Construction work in progress \| $				200
East \| Vistra Corp.
Business Acquisition [Line Items]
Planned electricity generation facility capacity								300
Planned battery energy system capacity								150
East \| Vistra Corp. \| Solar Generation and Battery Energy Storage Projects
Business Acquisition [Line Items]
Construction work in progress \| $				$ 66
West \| Vistra Corp. \| Moss Landing Battery Energy Storage System Phase I \| Moss Landing Power Plant (Battery Storage Project)
Business Acquisition [Line Items]
Battery energy storage system capacity			300
Contract, duration, number of years			20 years
West \| Vistra Corp. \| Moss Landing Battery Energy Storage System Phase II \| Moss Landing Power Plant (Battery Storage Project)
Business Acquisition [Line Items]
Battery energy storage system capacity		100
Contract, duration, number of years		10 years
West \| Vistra Corp. \| Moss Landing Battery Energy Storage System Phase III \| Moss Landing Power Plant (Battery Storage Project)
Business Acquisition [Line Items]
Battery energy storage system capacity	350
Contract, duration, number of years	15 years
Investment tax credit \| $	$ 154