XML 112 R99.htm IDEA: XBRL DOCUMENT
v3.23.1

Commitments and Contingencies (Guarantees, Surety Bonds and Letters of Credit) (Detail) | 3 Months Ended
--- | ---
Mar. 31, 2023 USD ($) Guarantee
Guarantee Obligations [Line Items] |  |
Guarantee liability | $ 4,438,000,000 | [1],[2]
Financial Guarantee | Equity Method Investee | Cove Point |  |
Guarantee Obligations [Line Items] |  |
Number of Guarantee | Guarantee | 4 |
Guarantees with Maximum Limit [Member] | Equity Method Investee | Cove Point |  |
Guarantee Obligations [Line Items] |  |
Number of Guarantee | Guarantee | 2 |
Guarantee liability | $ 1,900,000,000 |
Guarantees with No Maximum Limit [Member] | Equity Method Investee | Cove Point |  |
Guarantee Obligations [Line Items] |  |
Number of Guarantee | Guarantee | 2 |
Guarantee liability | $ 0 |
Additional Guarantees [Member] |  |
Guarantee Obligations [Line Items] |  |
Guarantee liability | 20,000,000 |
Surety Bond |  |
Guarantee Obligations [Line Items] |  |
Guarantee liability | 268,000,000 |
Surety Bond | Virginia Electric and Power Company |  |
Guarantee Obligations [Line Items] |  |
Guarantee liability | 190,000,000 |
Financial Standby Letter of Credit |  |
Guarantee Obligations [Line Items] |  |
Guarantee liability | $ 154,000,000 |
[1] | Excludes Dominion Energy’s guarantee of an offshore wind installation vessel discussed in Note 15 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K for the year ended December 31, 2022.
[2] | In July 2016, Dominion Energy signed an agreement with a lessor to construct and lease a new corporate office property in Richmond, Virginia. The lessor provided equity and obtained financing commitments from debt investors, totaling $365 million, which funded total project costs. The project became substantially complete in August 2019 at which point the facility was available for Dominion Energy’s use and the five-year lease term commenced. At the end of the initial lease term, Dominion Energy can (i) extend the term of the lease for an additional five years, subject to the approval of the participants, at current market terms, (ii) purchase the property for an amount equal to the project costs or, (iii) subject to certain terms and conditions, sell the property on behalf of the lessor to a third party using commercially reasonable efforts to obtain the highest cash purchase price for the property. If the project is sold and the proceeds from the sale are insufficient to repay the investors for the project costs, Dominion Energy may be required to make a payment to the lessor, up to 87% of project costs, for the difference between the project costs and sale proceeds. At March 31, 2023, no amounts have been recorded related to this guarantee.

X
- Definition Number of guarantee. + References No definition available. + Details
Name: | d_NumberOfGuarantee
Namespace Prefix: | d_
Data Type: | xbrli:integerItemType
Balance Type: | na
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_GuaranteeObligationsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI https://asc.fasb.org/extlink&oid=124440162&loc=d3e12069-110248 + Details
Name: | us-gaap_GuaranteeObligationsMaximumExposure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_GuaranteeObligationsByNatureAxis=us-gaap_FinancialGuaranteeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=us-gaap_EquityMethodInvesteeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_GuaranteeObligationsByNatureAxis=d_GuaranteesWithMaximumLimitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_GuaranteeObligationsByNatureAxis=d_GuaranteesWithNoMaximumLimitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_GuaranteeObligationsByNatureAxis=d_AdditionalGuaranteesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_GuaranteeObligationsByNatureAxis=us-gaap_SuretyBondMember
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_GuaranteeObligationsByNatureAxis=us-gaap_FinancialStandbyLetterOfCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |