Accumulated arrearages.

No definition available.

Name:	d_AccumulatedArrearages
Namespace Prefix:	d_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Application date of public utilities transmission.

+ References

No definition available.

+ Details

Name:	d_ApplicationDateOfPublicUtilitiesTransmission
Namespace Prefix:	d_
Data Type:	xbrli:gYearMonthItemType
Balance Type:	na
Period Type:	duration

- Definition

Asset Impairment Charges After Tax

+ References

No definition available.

+ Details

Name:	d_AssetImpairmentChargesAfterTax
Namespace Prefix:	d_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Fuel component of electric rates.

+ References

No definition available.

+ Details

Name:	d_FuelComponentOfElectricRates
Namespace Prefix:	d_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Fuel cost after-tax.

+ References

No definition available.

+ Details

Name:	d_FuelCostAfterTax
Namespace Prefix:	d_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Increase decrease in annual base fuel component recoveries.

+ References

No definition available.

+ Details

Name:	d_IncreaseDecreaseInAnnualBaseFuelComponentRecoveries
Namespace Prefix:	d_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Percentage of pipeline system replaced.

+ References

No definition available.

+ Details

Name:	d_PercentageOfPipelineSystemReplaced
Namespace Prefix:	d_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Phase-in plan, amount of capitalized costs recoverable.

+ References

No definition available.

+ Details

Name:	d_PhaseInPlanAmountOfCapitalizedCostsRecoverable
Namespace Prefix:	d_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Power generation, targeted capacity provided by legislation.

+ References

No definition available.

+ Details

Name:	d_PowerGenerationTargetedCapacityProvidedByLegislation
Namespace Prefix:	d_
Data Type:	dtr-types:powerItemType
Balance Type:	na
Period Type:	duration

- Definition

Projected deferred program costs.

+ References

No definition available.

+ Details

Name:	d_ProjectedDeferredProgramCosts
Namespace Prefix:	d_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Public utilities actual earned return on equity percentage.

+ References

No definition available.

+ Details

Name:	d_PublicUtilitiesActualEarnedReturnOnEquityPercentage
Namespace Prefix:	d_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Public utilities annual transportation cost rate adjustment approval request to recover amount.

+ References

No definition available.

+ Details

Name:	d_PublicUtilitiesAnnualTransportationCostRateAdjustmentApprovalRequestToRecoverAmount
Namespace Prefix:	d_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Public utilities, approved rate, amount increase decrease.

+ References

No definition available.

+ Details

Name:	d_PublicUtilitiesApprovedRateAmountIncreaseDecrease
Namespace Prefix:	d_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Public utilities authorized return on equity percentage.

+ References

No definition available.

+ Details

Name:	d_PublicUtilitiesAuthorizedReturnOnEquityPercentage
Namespace Prefix:	d_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Public utilities collection of requested under-recovered projected fuel expense beginning date.

+ References

No definition available.

+ Details

Name:	d_PublicUtilitiesCollectionOfRequestedUnderRecoveredProjectedFuelExpenseBeginningDate
Namespace Prefix:	d_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Public utilities collection of requested under-recovered projected fuel expense period.

+ References

No definition available.

+ Details

Name:	d_PublicUtilitiesCollectionOfRequestedUnderRecoveredProjectedFuelExpensePeriod
Namespace Prefix:	d_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Public utilities cumulative property plant and equipment amount of construction work in process included in rate base.

+ References

No definition available.

+ Details

Name:	d_PublicUtilitiesCumulativePropertyPlantAndEquipmentAmountOfConstructionWorkInProcessIncludedInRateBase
Namespace Prefix:	d_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Public Utilities distribution infrastructure gathering assets.

+ References

No definition available.

+ Details

Name:	d_PublicUtilitiesDistributionInfrastructureGatheringAssets
Namespace Prefix:	d_
Data Type:	dtr-types:lengthItemType
Balance Type:	na
Period Type:	duration

- Definition

Public utilities, estimated cost.

+ References

No definition available.

+ Details

Name:	d_PublicUtilitiesEstimatedCost
Namespace Prefix:	d_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Public utilities exclude from recovery through base rates one half of financing costs period.

+ References

No definition available.

+ Details

Name:	d_PublicUtilitiesExcludeFromRecoveryThroughBaseRatesOneHalfOfFinancingCostsPeriod
Namespace Prefix:	d_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Public utilities operating expense estimated fuel expenses recovery.

+ References

No definition available.

+ Details

Name:	d_PublicUtilitiesOperatingExpenseEstimatedFuelExpensesRecovery
Namespace Prefix:	d_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Public utilities operating expense estimated fuel expenses under recovered balance.

+ References

No definition available.

+ Details

Name:	d_PublicUtilitiesOperatingExpenseEstimatedFuelExpensesUnderRecoveredBalance
Namespace Prefix:	d_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Public utilities, percentage of increases in annual capital expenditures.

+ References

No definition available.

+ Details

Name:	d_PublicUtilitiesPercentageOfIncreasesInAnnualCapitalExpenditures
Namespace Prefix:	d_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Public utilities property plant and equipment requested cost of construction.

+ References

No definition available.

+ Details

Name:	d_PublicUtilitiesPropertyPlantAndEquipmentRequestedCostOfConstruction
Namespace Prefix:	d_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Public utilities requested rate actual amount.

+ References

No definition available.

+ Details

Name:	d_PublicUtilitiesRequestedRateActualAmount
Namespace Prefix:	d_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Public Utilities, Requested Rate, Amount

+ References

No definition available.

+ Details

Name:	d_PublicUtilitiesRequestedRateAmount
Namespace Prefix:	d_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Public utilities, start date of proposed rate in month and year.

+ References

No definition available.

+ Details

Name:	d_PublicUtilitiesStartDateOfProposedRate
Namespace Prefix:	d_
Data Type:	xbrli:gYearMonthItemType
Balance Type:	na
Period Type:	duration

- Definition

Public utilities under-recovered accumulated bad debt expense.

+ References

No definition available.

+ Details

Name:	d_PublicUtilitiesUnderRecoveredAccumulatedBadDebtExpense
Namespace Prefix:	d_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Recovery of net bad debt expense.

+ References

No definition available.

+ Details

Name:	d_RecoveryOfNetBadDebtExpense
Namespace Prefix:	d_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 45
-Paragraph 4
-URI https://asc.fasb.org/extlink&oid=126905981&loc=d3e2420-110228

+ Details

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

- Definition

Fuel costs incurred that are directly related to goods produced and sold and services rendered during the reporting period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.2(a),(d))
-URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227

+ Details

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

- Definition

The increase (decrease) during the period in the costs deferred for rate-making purposes.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 980
-SubTopic 340
-Section 50
-Paragraph 2
-URI https://asc.fasb.org/extlink&oid=6499975&loc=d3e44264-110382

+ Details

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

- Definition

Percentage of public utility's approved return on equity.

+ References

No definition available.

+ Details

Name:	us-gaap_PublicUtilitiesApprovedReturnOnEquityPercentage
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
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:	us-gaap_PublicUtilitiesGeneralDisclosuresLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of public utility's interim rate increase (decrease) allowed while waiting final decision of regulatory agency.

+ References

No definition available.

+ Details

Name:	us-gaap_PublicUtilitiesInterimRateIncreaseDecreaseAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Discloses the amount of construction work in process that is included in the rate making process at period end.

+ References

No definition available.

+ Details

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

- Definition

Amount of public utility's requested rate increase (decrease) with regulatory agency.

+ References

No definition available.

+ Details

Name:	us-gaap_PublicUtilitiesRequestedRateIncreaseDecreaseAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Percentage of public utility's requested return on equity.

+ References

No definition available.

+ Details

Name:	us-gaap_PublicUtilitiesRequestedReturnOnEquityPercentage
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount for the individual regulatory current liability as itemized in a table of regulatory current liabilities as of the end of the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 980
-SubTopic 405
-Section 25
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=6500807&loc=d3e48068-110394

+ Details

Name:	us-gaap_RegulatoryLiabilityCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	us-gaap_RegulatoryAgencyAxis=d_OhioRegulationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PublicUtilitiesRegulatoryProceedingAxis=d_PipelineInfrastructureReplacementProgramMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PublicUtilitiesRegulatoryProceedingAxis=d_CapitalExpenditureProgramMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PublicUtilitiesRegulatoryProceedingAxis=d_PercentageOfIncomePaymentPlanPlusProgramMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PublicUtilitiesRegulatoryProceedingAxis=d_UEXRiderMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementScenarioAxis=srt_ScenarioForecastMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

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

- Details

Name:	us-gaap_PublicUtilityAxis=d_UtilityScaleSolarMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PublicUtilityAxis=d_EnergyStorageMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PublicUtilityAxis=d_CVOWCommercialProjectMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RegulatoryAgencyAxis=d_VirginiaRegulationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_IncomeStatementLocationAxis=d_ImpairmentOfAssetsAndOtherChargesBenefitsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PublicUtilityAxis=d_AnnualFuelFactorMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	us-gaap_RegulatoryAgencyAxis=d_SouthCarolinaRegulationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PublicUtilitiesRegulatoryProceedingAxis=d_RiderDSMMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PublicUtilitiesRegulatoryProceedingAxis=d_CostOfFuelMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PublicUtilitiesRegulatoryProceedingAxis=d_GasRateCaseMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	us-gaap_RegulatoryAgencyAxis=d_WestVirginiaRegulationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PublicUtilitiesRegulatoryProceedingAxis=d_PipelineReplacementAndExpansionProgramMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PublicUtilitiesRegulatoryProceedingAxis=d_PurchasedGasMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

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

- Details

Name:	us-gaap_RegulatoryAgencyAxis=d_UtahRegulationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PublicUtilitiesRegulatoryProceedingAxis=d_BaseRateCaseMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: