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

Fair Value Assets And Liabilities Measured On Recurring Basis Unobservable Input Reconciliation Calculation [Roll Forward]

No definition available.

Name:	d_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward
Namespace Prefix:	d_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

This element represents the aggregate amount of assets and liabilities measured at fair value on a recurring basis with a significant amount of unobservable inputs.

No definition available.

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

This element represents the net amount of realized and unrealized gains or (losses) included in earnings for assets and liabilities measured at fair value on a recurring basis and included in the Level 3 fair value category.

No definition available.

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

This element represents the net amount of realized and unrealized gains or (losses) included in regulatory assets/liabilities for assets and liabilities measured at fair value on a recurring basis and included in the Level 3 fair value category.

No definition available.

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

This element represents the net amount of settlements for assets and liabilities measured at fair value on a recurring basis and included in the Level 3 fair value category.

No definition available.

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

This element represents the net amount of transfers in to or out of the Level 3 fair value category for assets and liabilities measured at fair value on a recurring basis.

No definition available.

Name:	d_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAndLiabilitiesTransfersOutOfLevel3
Namespace Prefix:	d_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

This element represents the net amount of realized and unrealized gains or (losses) included in other comprehensive income (loss) for assets and liabilities measured at fair value on a recurring basis and included in the Level 3 fair value category.

No definition available.

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

Name:	us-gaap_TradingActivityByTypeAxis=us-gaap_CommodityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsRecurringMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_TradingActivityByTypeAxis=us-gaap_NaturalGasLiquidsReservesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

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