XML 133 R112.htm IDEA: XBRL DOCUMENT
v3.22.4

Investments (Investments Under Equity Method of Accounting) (Detail) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021
Schedule of Equity Method Investments [Line Items] |  |  |
Investment in equity method affiliates | [1] | $ 3,012 | $ 2,932
Cove Point |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Equity Method Investment Ownership Percentage |  | 50.00% |
Investment in equity method affiliates |  | $ 2,673 | 2,738
Description |  | LNG import/export and storage facility |
Atlantic Coast Pipeline |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Equity Method Investment Ownership Percentage |  | 53.00% |
Investment in equity method affiliates | [2] | $ 0 | 0
Description |  | Gas transmission system |
Wrangler Retail Gas Holdings LLC |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Equity Method Investment Ownership Percentage | [3] | 0.00% |
Investment in equity method affiliates |  | $ 0 | 68
Description |  | Nonregulated retail energy marketing |
Align RNG, LLC |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Equity Method Investment Ownership Percentage | [4] | 50.00% |
Investment in equity method affiliates | [4] | $ 103 | 74
Description | [4] | Renewable natural gas |
Dominion Energy Virginia |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Equity Method Investment Ownership Percentage |  | 50.00% |
Investment in equity method affiliates |  | $ 176 | 0
Description |  | Military electric and gas |
Other Investment |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Investment in equity method affiliates |  | $ 60 | $ 52
Ownership% |  | various |
[1] | Excludes liability to Atlantic Coast Pipeline.
[2] | Dominion Energy’s Consolidated Balance Sheets include a liability associated with its investment in Atlantic Coast Pipeline of $114 million and $113 million at December 31, 2022 and 2021, respectively, presented in other current liabilities. See discussion below for additional information.
[3] | Dominion Energy’s sold its remaining 15% ownership interest in March 2022, following a previous sale of 5% of its ownership interest in 2021. See discussion below.
[4] | Dominion Energy’s unfunded commitment to be made to Align RNG by the end of 2022 was $8 million at December 31, 2021. The commitment was fully paid in January 2022.

X
- Definition Equity method investment ownership percentage description. + References No definition available. + Details
Name: | d_EquityMethodInvestmentOwnershipPercentageDescription
Namespace Prefix: | d_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition A description of the principal activities of an investee accounted for under the equity method. + References No definition available. + Details
Name: | us-gaap_EquityMethodInvestmentDescriptionOfPrincipalActivities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI https://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571 + Details
Name: | us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=109237563&loc=d3e33749-111570 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(10)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8813-108599 + Details
Name: | us-gaap_EquityMethodInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

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

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

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

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

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

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