XML 150 R128.htm IDEA: XBRL DOCUMENT
v3.24.0.1

Property, Plant and Equipment (Narrative) (Detail) $ in Millions |  | 1 Months Ended | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Nov. 08, 2023 USD ($) | Feb. 29, 2024 USD ($) | Dec. 31, 2021 USD ($) | Jun. 30, 2022 USD ($) | Dec. 31, 2023 USD ($) MW | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Aug. 31, 2021 USD ($)
Property Plant And Equipment [Line Items] |  |  |  |  |  |  |  |
Impairment of assets and other charges |  |  |  |  | $ 307 | $ 1,401 | $ 194 |
CVOW Commercial Project Excluding Financing Costs | Forecast |  |  |  |  |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |  |  |  |  |
Total project costs |  | $ 9,800 |  |  |  |  |  |
Maximum | Forecast |  |  |  |  |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |  |  |  |  |
Additional capital contribution percentage |  | 83.00% |  |  |  |  |  |
Maximum | CVOW Commercial Project Excluding Financing Costs Condition Two | Forecast |  |  |  |  |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |  |  |  |  |
Total project costs |  | $ 11,300 |  |  |  |  |  |
Minimum | Forecast |  |  |  |  |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |  |  |  |  |
Additional capital contribution percentage |  | 67.00% |  |  |  |  |  |
Dominion Energy |  |  |  |  |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |  |  |  |  |
Impairment of assets and other charges |  |  |  |  |  | 908 |  |
Asset impairment charges after tax |  |  |  |  |  | 685 |  |
Property, plant and equipment, intangible assets and right-of-use lease assets down to estimated fair value |  |  |  |  |  | 665 |  |
Virginia Power and Stonepeak | CVOW Commercial Project | Forecast |  |  |  |  |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |  |  |  |  |
Remaining capital percentage |  | 50.00% |  |  |  |  |  |
Virginia Power and Stonepeak | Maximum | Forecast |  |  |  |  |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |  |  |  |  |
Total project costs |  | $ 11,300 |  |  |  |  |  |
Corporate Office Building |  |  |  |  |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |  |  |  |  |
Sale of office building |  |  |  |  | 40 |  |  |
Level 3 | Corporate Office Building |  |  |  |  |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |  |  |  |  |
Long-lived assets, estimated fair value |  |  | $ 26 |  | 35 |  | 26 |
Impairment of Assets and Other Charges | Corporate Office Building |  |  |  |  |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |  |  |  |  |
Impairment of assets and other charges |  |  |  |  | 93 |  | 16 |
Asset impairment charges after tax |  |  |  |  | 69 |  | 12 |
Terra Nova Renewable Partners | Nonregulated Solar Projects | S B L Holdco L L C |  |  |  |  |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |  |  |  |  |
Percentage of controlling interest |  |  |  |  |  |  |  | 67.00%
Disposal group, total value of consideration |  |  |  |  |  |  |  | $ 456
Gain (loss) on held for sale |  |  | $ (149) |  |  |  |  |
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal, Statement of Income or Comprehensive Income [Extensible Enumeration] |  |  | Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property |  |  |  |  |
Gain (loss) on held for sale, after tax |  |  | $ (89) |  |  |  |  |
Clearway Energy Inc | Four Brothers And Three Cedars |  |  |  |  |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |  |  |  |  |
Percentage of controlling interest |  |  |  |  |  |  |  | 50.00%
Disposal group, total value of consideration |  |  |  |  |  |  |  | $ 335
Gain (loss) on held for sale |  |  | $ (364) |  |  |  |  |
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal, Statement of Income or Comprehensive Income [Extensible Enumeration] |  |  | Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property |  |  |  |  |
Gain (loss) on held for sale, after tax |  |  | $ (81) |  |  |  |  |
Virginia Electric and Power Company |  |  |  |  |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |  |  |  |  |
Project easement cost paid | $ 65 |  |  |  |  |  |  |
Easement charges before tax | 65 |  |  |  |  |  |  |
Easement charges after tax | $ 49 |  |  |  |  |  |  |
Virginia Electric and Power Company | Forecast |  |  |  |  |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |  |  |  |  |
Percentage of proceeds from sale of non controlling interests in CVOW commercial project |  | 50.00% |  |  |  |  |  |
Termination fee |  | $ 200 |  |  |  |  |  |
Virginia Electric and Power Company | CVOW Commercial Project | Forecast |  |  |  |  |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |  |  |  |  |
Ownership percentage |  | 50.00% |  |  |  |  |  |
Virginia Electric and Power Company | CVOW Commercial Project Excluding Financing Costs | Forecast |  |  |  |  |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |  |  |  |  |
Initial withholding amount |  | $ 100 |  |  |  |  |  |
Virginia Electric and Power Company | CVOW Commercial Project Excluding Financing Costs Condition Two | Forecast |  |  |  |  |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |  |  |  |  |
Proceeds from sale of non controlling interests in CVOW commercial project |  | 3,000 |  |  |  |  |  |
Virginia Electric and Power Company | Minimum | Forecast |  |  |  |  |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |  |  |  |  |
Total project costs |  | 13,700 |  |  |  |  |  |
Virginia Electric and Power Company | Minimum | CVOW Commercial Project | Forecast |  |  |  |  |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |  |  |  |  |
Initial withholding amount |  | 145 |  |  |  |  |  |
Virginia Electric and Power Company | Virginia Regulation |  |  |  |  |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |  |  |  |  |
Impairment of assets and other charges |  |  |  |  |  |  | $ 318 |
Virginia Electric and Power Company | Impairment of Assets and Other Charges |  |  |  |  |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |  |  |  |  |
Impairment of assets and other charges |  |  |  | $ 191 |  |  |  |
Asset impairment charges after tax |  |  |  | $ 142 |  |  |  |
Stonepeak | Maximum | Forecast |  |  |  |  |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |  |  |  |  |
Total project costs |  | 13,700 |  |  |  |  |  |
Additional capital costs |  | 11,300 |  |  |  |  |  |
Stonepeak | Minimum | Forecast |  |  |  |  |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |  |  |  |  |
Total project costs |  | $ 11,300 |  |  |  |  |  |
Acquisition of Solar Project at Schools in Virginia |  |  |  |  |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |  |  |  |  |
Anticipated projected cost |  |  |  |  | $ 16 |  |  |
Aggregate generation capacity | MW |  |  |  |  | 7 |  |  |
Project cost |  |  |  |  | $ 7 |  |  |
Aggregate generation capacity of service solar facilities | MW |  |  |  |  | 4 |  |  |
Utility Property |  |  |  |  |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |  |  |  |  |
Sale of utility property |  |  |  |  | $ 12 | 20 |  |
Gain on sale of asset |  |  |  |  | 11 | 20 |  |
Gain on sale of asset after tax |  |  |  |  | $ 8 | $ 15 |  |

X
- Definition Additional capital contribution percentage. + References No definition available. + Details
Name: | d_AdditionalCapitalContributionPercentage
Namespace Prefix: | d_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Additional capital costs. + References No definition available. + Details
Name: | d_AdditionalCapitalCosts
Namespace Prefix: | d_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- 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

X
- Definition Capacity of facility of company owned service solar facilities. + References No definition available. + Details
Name: | d_CapacityOfFacilityOfCompanyOwnedServiceSolarFacilities
Namespace Prefix: | d_
Data Type: | dtr-types:powerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Capacity of facility of company owned solar distribution generation facilities. + References No definition available. + Details
Name: | d_CapacityOfFacilityOfCompanyOwnedSolarDistributionGenerationFacilities
Namespace Prefix: | d_
Data Type: | dtr-types:powerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disposal group, not discontinued operation, gain (loss) on disposal, after tax. + References No definition available. + Details
Name: | d_DisposalGroupNotDiscontinuedOperationGainLossOnDisposalAfterTax
Namespace Prefix: | d_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Easement charges after tax. + References No definition available. + Details
Name: | d_EasementChargesAfterTax
Namespace Prefix: | d_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Easement charges before tax. + References No definition available. + Details
Name: | d_EasementChargesBeforeTax
Namespace Prefix: | d_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Gain loss on sale of property plant equipment after tax. + References No definition available. + Details
Name: | d_GainLossOnSaleOfPropertyPlantEquipmentAfterTax
Namespace Prefix: | d_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Initial withholding amount. + References No definition available. + Details
Name: | d_InitialWithholdingAmount
Namespace Prefix: | d_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Long-lived assets fair value disclosure. + References No definition available. + Details
Name: | d_LongLivedAssetsFairValueDisclosure
Namespace Prefix: | d_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Payment of project easement cost. + References No definition available. + Details
Name: | d_PaymentOfProjectEasementCost
Namespace Prefix: | d_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Proceeds from sale of investment projects percentage. + References No definition available. + Details
Name: | d_ProceedsFromSaleOfInvestmentProjectsPercentage
Namespace Prefix: | d_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Property, plant and equipment, intangible assets and right-of-use lease assets write down to estimated fair value. + References No definition available. + Details
Name: | d_PropertyPlantAndEquipmentIntangibleAssetsAndRightOfUseLeaseAssetsWriteDownToEstimatedFairValue
Namespace Prefix: | d_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Public utilities property plant and equipment Cost of construction. + References No definition available. + Details
Name: | d_PublicUtilitiesPropertyPlantAndEquipmentCostOfConstruction
Namespace Prefix: | d_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Public utilities, property, plant and equipment, expected cost of construction. + References No definition available. + Details
Name: | d_PublicUtilitiesPropertyPlantAndEquipmentExpectedCostOfConstruction
Namespace Prefix: | d_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Remaining capital percentage. + References No definition available. + Details
Name: | d_RemainingCapitalPercentage
Namespace Prefix: | d_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Termination fee. + References No definition available. + Details
Name: | d_TerminationFee
Namespace Prefix: | d_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- 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 -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482130/360-10-45-4 + Details
Name: | us-gaap_AssetImpairmentCharges
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of consideration received or receivable for the disposal of assets and liabilities, including discontinued operation. + References No definition available. + Details
Name: | us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount before tax of gain (loss) recognized on the sale or disposal of a disposal group. Excludes discontinued operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 360 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482099/360-10-50-3 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 360 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482130/360-10-45-5 + Details
Name: | us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Indicates line item in statement of income that includes gain (loss) recognized on sale or disposal of disposal group. Excludes discontinued operation. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 360 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482099/360-10-50-3 + Details
Name: | us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposalStatementOfIncomeExtensibleList
Namespace Prefix: | us-gaap_
Data Type: | enum2:enumerationSetItemType
Balance Type: | na
Period Type: | duration

X
- Definition This element represents the aggregate cost of investments accounted for under the equity method of accounting. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.12) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_EquityMethodInvestmentAggregateCost
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 323 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481687/323-10-50-3 + Details
Name: | us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 + Details
Name: | us-gaap_GainLossOnSaleOfPropertyPlantEquipment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The parent entity's interest in net assets of the subsidiary, expressed as a percentage. + References No definition available. + Details
Name: | us-gaap_MinorityInterestOwnershipPercentageByParent
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The cash inflow from sale of buildings. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 12 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-12 + Details
Name: | us-gaap_ProceedsFromSaleOfBuildings
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The cash inflow from the sale of investment projects held by an entity in hopes of getting a future return or interest from it. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-12 + Details
Name: | us-gaap_ProceedsFromSaleOfInvestmentProjects
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 12 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-12 + Details
Name: | us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- 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_PropertyPlantAndEquipmentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=d_CvowCommercialProjectExcludingFinancingCostsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementScenarioAxis=srt_ScenarioForecastMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=d_CvowCommercialProjectExcludingFinancingCostsConditionTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=us-gaap_ParentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_OwnershipAxis=d_VirginiaPowerAndStonepeakMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=d_CVOWCommercialProjectMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=srt_OfficeBuildingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

X
- Details
Name: | dei_LegalEntityAxis=d_TerraNovaRenewablePartnersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis=d_NonregulatedSolarProjectsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_OwnershipAxis=d_SBLHoldcoLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=d_ClearwayEnergyIncMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_OwnershipAxis=d_FourBrothersAndThreeCedarsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=d_VirginiaElectricAndPowerCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | dei_LegalEntityAxis=d_StonepeakMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=d_AcquisitionOfSolarProjectAtSchoolsInVirginiaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=d_UtilityPropertyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |