Application date of public utilities transmission.

No definition available.

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

- Definition

Approval date of public utilities regulatory filing.

+ References

No definition available.

+ Details

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

- Definition

Asset impairment benefit.

+ References

No definition available.

+ Details

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

- Definition

Asset impairment benefit after tax.

+ References

No definition available.

+ Details

Name:	d_AssetImpairmentBenefitAfterTax
Namespace Prefix:	d_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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

Cap amount on revenue reductions in first triennial.

+ References

No definition available.

+ Details

Name:	d_CapAmountOnRevenueReductionsInFirstTriennial
Namespace Prefix:	d_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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

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

Kilo Volt Line.

+ References

No definition available.

+ Details

Name:	d_KiloVoltLine
Namespace Prefix:	d_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of electric distribution grid transformation projects.

+ References

No definition available.

+ Details

Name:	d_NumberOfElectricDistributionGridTransformationProjects
Namespace Prefix:	d_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of electric distribution grid transformation projects components.

+ References

No definition available.

+ Details

Name:	d_NumberOfElectricDistributionGridTransformationProjectsComponents
Namespace Prefix:	d_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of electric energy excluding existing nuclear generation and certain new carbon resources.

+ References

No definition available.

+ Details

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

- Definition

Percentage of energy efficiency target based on energy savings from previous year baseline.

+ References

No definition available.

+ Details

Name:	d_PercentageOfEnergyEfficiencyTargetBasedOnEnergySavingsFromPreviousYearBaseline
Namespace Prefix:	d_
Data Type:	dtr-types:percentItemType
Balance Type:	na
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 constructed by utility capacity.

+ References

No definition available.

+ Details

Name:	d_PowerGenerationConstructedByUtilityCapacity
Namespace Prefix:	d_
Data Type:	dtr-types:powerItemType
Balance Type:	na
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

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.

+ References

No definition available.

+ Details

Name:	d_PublicUtilitiesApprovedRateAmount
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

Amount of public utility's approved rate increase (decrease) by regulatory agency.

+ References

No definition available.

+ Details

Name:	d_PublicUtilitiesApprovedRateIncreaseDecreaseAmountPublicUtilitiesApprovedRateIncreaseDecreaseAmount
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 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 end date of proposed program.

+ References

No definition available.

+ Details

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

- Definition

Public utilities energy efficiency upgrades and critical health and safety repairs.

+ References

No definition available.

+ Details

Name:	d_PublicUtilitiesEnergyEfficiencyUpgradesAndCriticalHealthAndSafetyRepairs
Namespace Prefix:	d_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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 increase decrease customers deferred account.

+ References

No definition available.

+ Details

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

- Definition

Public utilities, length of transmission line.

+ References

No definition available.

+ Details

Name:	d_PublicUtilitiesLengthOfTransmissionLine
Namespace Prefix:	d_
Data Type:	dtr-types:lengthItemType
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 operation and maintenance costs recovery amount.

+ References

No definition available.

+ Details

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

- Definition

Public utilities operation and maintenance costs recovery period.

+ References

No definition available.

+ Details

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

- Definition

Public utilities percentage of debt rate on capital investments.

+ References

No definition available.

+ Details

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

- Definition

Public utilities, period for cost capitalization.

+ References

No definition available.

+ Details

Name:	d_PublicUtilitiesPeriodForCostCapitalization
Namespace Prefix:	d_
Data Type:	xbrli:durationItemType
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:	duration

- Definition

Public utilities requested authorized return on equity percentage.

+ References

No definition available.

+ Details

Name:	d_PublicUtilitiesRequestedAuthorizedReturnOnEquityPercentage
Namespace Prefix:	d_
Data Type:	dtr-types:percentItemType
Balance Type:	na
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, requested rate increase amortization of certain excess deferred income taxes.

+ References

No definition available.

+ Details

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

- Definition

Public utilities requested rate increase decrease amount in connection with federal and state income tax reductions.

+ References

No definition available.

+ Details

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

- Definition

Public utilities requested rate increase decrease amount in connection with Federal and State income tax reductions in initial rate year.

+ References

No definition available.

+ Details

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

- Definition

Public utilities requested rate increase decrease amount in connection with Federal and State income tax reductions in second rate year.

+ References

No definition available.

+ Details

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

- Definition

Public utilities requested rate increase decrease amount in connection with Federal and State income tax reductions in third through fifth rate year.

+ References

No definition available.

+ Details

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

- Definition

Public Utilities Requested Rate over six month period.

+ References

No definition available.

+ Details

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

- Definition

Public Utilities Requested Rate over three year.

+ References

No definition available.

+ Details

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

- Definition

Public utilities, retail electric customer balance.

+ References

No definition available.

+ Details

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

- Definition

Public utilities return on equity percentage.

+ References

No definition available.

+ Details

Name:	d_PublicUtilitiesReturnOnEquityPercentage
Namespace Prefix:	d_
Data Type:	dtr-types:percentItemType
Balance Type:	na
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

Rate reduction.

+ References

No definition available.

+ Details

Name:	d_RateReduction
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 http://asc.fasb.org/extlink&oid=123570139&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 http://asc.fasb.org/extlink&oid=123351718&loc=d3e2420-110228

+ Details

Name:	us-gaap_AssetImpairmentCharges
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 http://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

Amount of public utility's approved rate increase (decrease) by regulatory agency.

+ References

No definition available.

+ Details

Name:	us-gaap_PublicUtilitiesApprovedRateIncreaseDecreaseAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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 rate increase (decrease) with regulatory agency.

+ References

No definition available.

+ Details

Name:	us-gaap_PublicUtilitiesRequestedRateIncreaseDecreasePercentage
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
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 asset as itemized in a table of regulatory assets 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 340
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6499975&loc=d3e44250-110382

+ Details

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

- 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 http://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

- Definition

Amount of operating expense for routine plant maintenance, repairs and operations of regulated operation.

+ 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(b))
-URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227

+ Details

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

- Details

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

- Details

Name:	srt_StatementScenarioAxis=d_TargetedToReachByEndOfYearFiveMember
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_RegulatoryAgencyAxis=d_NorthCarolinaRegulationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PublicUtilitiesRegulatoryProceedingAxis=d_PipelineIntegrityAndSafetyProgramMember
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_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis=d_SouthCarolinaElectricBaseRateCaseMember
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_IncomeStatementLocationAxis=us-gaap_OtherIncomeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

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

- Details

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

- Details

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

- Details

Name:	us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis=d_GrassfieldsSolarNorgeSolarAndSycamoreSolarMember
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_IncomeStatementLocationAxis=d_OperatingRevenueMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_IncomeStatementLocationAxis=d_RegulatoryAssetAssociatedWithEarlyRetirementsMember
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:

- Details

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

- Details

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

- Details

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

- Details

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

- Details

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

- Details

Name:	srt_StatementScenarioAxis=d_TargetedToReachByEndOfYearOneMember
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_StatementScenarioAxis=d_TargetedToReachByEndOfYearTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

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

- Details

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

- Details

Name:	us-gaap_PublicUtilitiesRegulatoryProceedingAxis=d_RiderDMember
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_PublicUtilitiesRegulatoryProceedingAxis=d_RiderDSMMember
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:	us-gaap_PublicUtilitiesRegulatoryProceedingAxis=d_GasRateCaseMember
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:	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_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:

Regulatory Matters (Narrative) (Detail) $ in Millions		1 Months Ended																											3 Months Ended	12 Months Ended
Regulatory Matters (Narrative) (Detail) $ in Millions	Nov. 01, 2021 USD ($)	Feb. 28, 2022 USD ($)	Jan. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Nov. 30, 2021 USD ($)	Oct. 31, 2021 USD ($)	Sep. 30, 2021 USD ($) MW	Aug. 31, 2021 USD ($)	Jul. 31, 2021 USD ($)	Jun. 30, 2021 USD ($) Project Component	May 31, 2021 USD ($)	Apr. 30, 2021 USD ($)	Mar. 31, 2021 USD ($)	Feb. 28, 2021 USD ($)	Jan. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Sep. 30, 2020 USD ($) mi	Aug. 31, 2020 USD ($)	Jul. 31, 2020 USD ($) MW	Apr. 30, 2020 USD ($) MW	Mar. 31, 2020 USD ($)	Jan. 31, 2020	Sep. 30, 2019 USD ($)	May 31, 2019 USD ($)	Mar. 31, 2019 USD ($)	Jan. 31, 2019 USD ($)	Nov. 30, 2013 kV mi	Dec. 31, 2011	Mar. 31, 2021 USD ($)	Dec. 31, 2022 USD ($)	Mar. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2008
Public Utilities General Disclosures [Line Items]
Impairment of assets and other charges																																$ 195	$ 2,105	$ 1,520
Other operations and maintenance																																3,734	3,685	3,790
Regulatory assets				$ 10,135												$ 9,832																10,135	9,832
Regulatory liabilities				986												$ 809																986	809
Impairment of Assets and Other Charges
Public Utilities General Disclosures [Line Items]
Impairment of assets and other charges																							$ 26
Impairment of assets and other charges after tax																							19
Target to Reach by End of 2025
Public Utilities General Disclosures [Line Items]
Energy efficiency target percentage. based on energy savings from 2019 baseline																				5.00%
Virginia Regulation
Public Utilities General Disclosures [Line Items]
Percentage of electric energy excluding existing nuclear generation and certain new carbon resources																				100.00%
Cap on revenue reductions in the first triennial																				$ 50
North Carolina Regulation \| Pipeline Integrity and Safety Program
Public Utilities General Disclosures [Line Items]
Total revenue requirement								$ 34
Increase (decrease) in revenue requirement								1
South Carolina Regulation \| South Carolina Electric Base Rate Case
Public Utilities General Disclosures [Line Items]
Return of equity percentage																		5.90%
Increase (decrease) in revenue requirement									$ 62									$ 178
Approved return on equity percentage									9.50%									10.25%
Increase (decrease) in revenue requirement, percentage																		7.75%
Public utilities, requested rate increase amortization of certain excess deferred income taxes									$ 36
Public utilities, retail electric customer balance									15
Public utilities energy efficiency upgrades and critical health and safety repairs									$ 15
Regulatory assets				237																												237
South Carolina Regulation \| South Carolina Electric Base Rate Case \| Impairment of Assets and Other Charges (Benefits)
Public Utilities General Disclosures [Line Items]
Impairment of assets and other charges																																249
Impairment of assets and other charges after tax																																187
South Carolina Regulation \| South Carolina Electric Base Rate Case \| Other Income
Public Utilities General Disclosures [Line Items]
Impairment of assets and other charges																																18
Impairment of assets and other charges after tax																																14
Ohio Regulation
Public Utilities General Disclosures [Line Items]
Percentage of debt rate on capital investments																												6.50%
Ohio Regulation \| PIR Program
Public Utilities General Disclosures [Line Items]
Return of equity percentage																3.00%																			3.00%
Percentage of pipeline system replaced																																				25.00%
Projected capital investment																																			$ 200
Period for cost cap																5 years
Last date of investment																Dec. 31, 2026
Total estimated cost																$ 178																	178
Total cumulative estimated cost												$ 2,000
Approved annual revenue required												243
Ohio Regulation \| C E P Program
Public Utilities General Disclosures [Line Items]
Total estimated cost																99																	99	137
Total cumulative estimated cost																957																	957
Proposed revenue requirement												119
Ohio Regulation \| UEX Rider
Public Utilities General Disclosures [Line Items]
Increase (decrease) in revenue requirement																													$ 20
Public utilities, under-recovered accumulated bad debt expense																													7
Ohio Regulation \| Forecast \| UEX Rider
Public Utilities General Disclosures [Line Items]
Recovery of bad debt expense																															$ 13
Virginia Electric and Power Company
Public Utilities General Disclosures [Line Items]
Proposed cost of project						$ 3,900	$ 1,400
Other operations and maintenance																																1,460	1,472	$ 1,376
Regulatory assets				4,980												3,804																4,980	3,804
Regulatory liabilities				647												425																647	425
Virginia Electric and Power Company \| Impairment of Assets and Other Charges
Public Utilities General Disclosures [Line Items]
Impairment of assets and other charges																					$ 751		17	$ 62	$ 346	$ 160			76				127
Impairment of assets and other charges after tax																					$ 559		12	$ 46	$ 257	$ 119			$ 56				94
Virginia Electric and Power Company \| Income Payment Program
Public Utilities General Disclosures [Line Items]
Total revenue requirement																$ 93
Virginia Electric and Power Company \| Grid Transformation And Security Act \| Impairment of Assets and Other Charges
Public Utilities General Disclosures [Line Items]
Impairment of assets and other charges																																	130
Impairment of assets and other charges (benefits)																																130
Impairment of assets and other charges (benefits) after tax																																97
Virginia Electric and Power Company \| Grassfields Solar Norge Solar And Sycamore Solar
Public Utilities General Disclosures [Line Items]
Targeted capacity provided by legislation \| MW																			82
Proposed cost of project																			$ 170
Virginia Electric and Power Company \| Virginia Power North Carolina Fuel Filing
Public Utilities General Disclosures [Line Items]
Fuel Component of Electric Rates								$ 26
Virginia Electric and Power Company \| Utility-scale Solar
Public Utilities General Disclosures [Line Items]
Targeted capacity provided by legislation \| MW							661
Virginia Electric and Power Company \| Energy Storage
Public Utilities General Disclosures [Line Items]
Targeted capacity provided by legislation \| MW							70
Virginia Electric and Power Company \| CVOW Commercial Project
Public Utilities General Disclosures [Line Items]
Estimated cost					$ 1,100
Virginia Electric and Power Company \| Virginia Regulation
Public Utilities General Disclosures [Line Items]
Rate reduction																																50
Impairment of assets and other charges																																318
Increase (decrease) in revenue requirement						330
Refund to customer over 6 month period						255
Refund to customer three years						75
Increase (Decrease) Over Previous Year						309
Virginia Electric and Power Company \| Virginia Regulation \| Impairment of Assets and Other Charges
Public Utilities General Disclosures [Line Items]
Impairment of assets and other charges																																318
Impairment of assets and other charges after tax																																237
Virginia Electric and Power Company \| Virginia Regulation \| Operating Revenue
Public Utilities General Disclosures [Line Items]
Impairment of assets and other charges																																356
Impairment of assets and other charges after tax																																265
Virginia Electric and Power Company \| Virginia Regulation \| Regulatory Asset Associated with Early Retirements
Public Utilities General Disclosures [Line Items]
Impairment of assets and other charges																																549
Impairment of assets and other charges after tax																																409
Virginia Electric and Power Company \| Virginia Regulation \| Base Rate Case
Public Utilities General Disclosures [Line Items]
Return of equity percentage											10.42%		10.85%
CVOWP project investment elected for CCRO to offset available revenues													$ 26
Requested authorized return on equity percentage													10.80%
Increase (decrease) in revenue requirement						$ 50
Authorized return percentage						9.35%
Virginia Electric and Power Company \| Virginia Regulation \| Annual Fuel Factor
Public Utilities General Disclosures [Line Items]
Total revenue requirement											$ 1,400
Rate year beginning											2021-07
Estimated under-recovered balances											$ 72
Virginia Electric and Power Company \| Virginia Regulation \| Grid Transformation And Security Act
Public Utilities General Disclosures [Line Items]
Number of electric distribution grid transformation projects \| Project										14
Number Of Electric Distribution Grid Transformation Projects Components \| Component										6
Proposed cost of project										$ 667
Other operations and maintenance										110
Virginia Electric and Power Company \| Virginia Regulation \| Surry Switching Station Transmission Line
Public Utilities General Disclosures [Line Items]
Miles of Lines \| mi																											7
Type of Line \| kV																											500
Virginia Electric and Power Company \| Virginia Regulation \| Transmission Line from Skiffes Creek Switching Station to Wheaton Substation
Public Utilities General Disclosures [Line Items]
Miles of Lines \| mi																											20
Virginia Electric and Power Company \| Virginia Regulation \| Transmission Line Near Gainesville Substation And Haymarket Substation
Public Utilities General Disclosures [Line Items]
Type of Line \| kV																											230
Virginia Electric and Power Company \| Virginia Regulation \| Solar And Onshore Wind \| Target to Reach by End of 2035
Public Utilities General Disclosures [Line Items]
Targeted capacity provided by legislation \| MW																				16,100
Virginia Electric and Power Company \| Virginia Regulation \| Utility-scale Solar \| Target to Reach by End of 2035 \| Maximum
Public Utilities General Disclosures [Line Items]
Targeted capacity provided by legislation \| MW																				15,000.0
Virginia Electric and Power Company \| Virginia Regulation \| Utility-scale Solar \| Target to Reach by End of 2024
Public Utilities General Disclosures [Line Items]
Targeted capacity provided by legislation \| MW																				3,000.0
Virginia Electric and Power Company \| Virginia Regulation \| Small-scale Solar \| Target to Reach by End of 2035
Public Utilities General Disclosures [Line Items]
Targeted capacity provided by legislation \| MW																				1,100
Virginia Electric and Power Company \| Virginia Regulation \| Energy Storage \| Target to Reach by End of 2035
Public Utilities General Disclosures [Line Items]
Targeted capacity provided by legislation \| MW																				2,700
Virginia Electric and Power Company \| Virginia Regulation \| Pumped Storage \| Target to Reach by End of 2035 \| Maximum
Public Utilities General Disclosures [Line Items]
Targeted capacity provided by legislation \| MW																				800
Virginia Electric and Power Company \| Virginia Regulation \| Offshore Wind Facility \| Target to Reach by End of 2035 \| Maximum
Public Utilities General Disclosures [Line Items]
Targeted capacity provided by legislation \| MW																				5,200
Constructed by utility capacity \| MW																				3,000.0
Virginia Electric and Power Company \| Virginia Regulation \| Offshore Wind Facility \| Target to Reach by End of 2035 \| Minimum
Public Utilities General Disclosures [Line Items]
Constructed by utility capacity \| MW																				2,500
Virginia Electric and Power Company \| North Carolina Regulation
Public Utilities General Disclosures [Line Items]
Approved return on equity percentage																						9.75%
Virginia Electric and Power Company \| North Carolina Regulation \| Base Rate Case
Public Utilities General Disclosures [Line Items]
Return of equity percentage																									10.75%
Increase (decrease) in revenue requirement																							$ 24		$ 27
Authorized return percentage																									9.90%
Percentage of earned return																									7.52%
PSNC \| Base Rate Case
Public Utilities General Disclosures [Line Items]
Increase (decrease) in revenue requirement												$ 53
Authorized return percentage												9.70%
Percentage of earned return												10.25%
Increase (decrease) in revenue requirement in connection with federal and state income tax reductions												$ 42
Increase (decrease) in revenue requirement in connection with federal and state income tax reductions, initial rate year				6		$ 4
Increase (decrease) in revenue requirement in connection with federal and state income tax reductions, second rate year				25		23
Increase (decrease) in revenue requirement in connection with federal and state income tax reductions, third through fifth rate year				$ 27		$ 26
Return on equity percentage						9.60%
Increase in gas cost	$ 29
Recovery amount of operation and maintenance costs						$ 106
Recovery period of operation and maintenance costs						4 years
PSNC \| North Carolina Regulation \| Rider D
Public Utilities General Disclosures [Line Items]
Rate year beginning					2021-12		2021-10
Increase in gas cost					$ 49		$ 61
Increase in customers deferred account					$ 15
Dominion Energy South Carolina Inc \| South Carolina Regulation \| Rider DSM
Public Utilities General Disclosures [Line Items]
Annual transportation cost rate adjustment, approval amount requested to recover amount												$ 43			$ 48
Application date															2021-01
Approval date															2021-04
Dominion Energy South Carolina Inc \| South Carolina Regulation \| Rider DSM \| Subsequent Event
Public Utilities General Disclosures [Line Items]
Annual transportation cost rate adjustment, approval amount requested to recover amount			$ 60
Dominion Energy South Carolina Inc \| South Carolina Regulation \| Gas Rate Case
Public Utilities General Disclosures [Line Items]
Total revenue requirement						$ 424				426
Increase (decrease) in revenue requirement										$ 9
Approved increase in revenue required						$ 7
Dominion Energy South Carolina Inc \| South Carolina Regulation \| Cost of Fuel
Public Utilities General Disclosures [Line Items]
Rate year beginning														2021-05
Application date														2021-02
Approval date														2021-04
Increase decrease in annual base fuel component recoveries														$ 36
Dominion Energy South Carolina Inc \| South Carolina Regulation \| Cost of Fuel \| Subsequent Event
Public Utilities General Disclosures [Line Items]
Rate year beginning		2022-05
Application date		2022-02
Increase decrease in annual base fuel component recoveries		$ 143
Regulatory liabilities		$ 66
Hope Gas Inc \| West Virginia Regulation \| PREP
Public Utilities General Disclosures [Line Items]
Rate year beginning						2021-11
Application date						2021-10
Projected capital investment						$ 54
Amount of cost recovery	$ 9																																$ 34
Hope Gas Inc \| West Virginia Regulation \| West Virginia Base Rate Case
Public Utilities General Disclosures [Line Items]
Return of equity percentage																	10.25%
Increase (decrease) in revenue requirement																	$ 28
Approved return on equity percentage									9.54%								9.45%
Approved increase in revenue required									$ 13
Public Utilities distribution infrastructure gathering assets \| mi																	2,000
Hope Gas Inc \| West Virginia Regulation \| Forecast \| PREP
Public Utilities General Disclosures [Line Items]
Projected capital investment																														$ 56
Questar Gas Company \| Utah Regulation
Public Utilities General Disclosures [Line Items]
Increase in gas cost						$ 83					$ 43																					$ 29