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Property, Plant and Equipment (Narrative) (Detail) |  | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Nov. 08, 2023 USD ($) | Oct. 31, 2024 USD ($) | Jul. 31, 2024 USD ($) a mi MW | Feb. 29, 2024 USD ($) | Sep. 30, 2019 USD ($) MW | Dec. 31, 2024 USD ($) | Sep. 30, 2024 USD ($) | Jun. 30, 2024 USD ($) | Mar. 31, 2024 USD ($) | Jun. 30, 2022 USD ($) | Dec. 31, 2024 USD ($) MW | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($)
Property Plant And Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income tax expense (benefit) |  |  |  |  |  |  |  |  |  |  |  | $ 308,000,000 | [1] | $ 568,000,000 | [2] | $ 59,000,000 | [3]
Noncontrolling interests |  |  |  |  |  |  | $ (53,000,000) | $ 0 | $ 0 | $ 0 |  | (53,000,000) |  | 0 |  | 0 |
Impairment of assets and other charges |  |  |  |  |  |  |  |  |  |  |  | 600,000,000 |  | 307,000,000 |  | 1,401,000,000 |
CVOW Commercial Project Excluding Financing Costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total project costs |  |  | $ 9,800,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Additional capital contribution percentage |  |  |  |  | 83.00% |  |  |  |  |  |  |  |  |  |  |  |
Maximum | CVOW Commercial Project Excluding Financing Costs Condition Two |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total project costs |  |  | $ 11,300,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
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 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 908,000,000 |
Asset impairment charges after tax |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 685,000,000 |
Property, plant and equipment, intangible assets and right-of-use lease assets down to estimated fair value |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 665,000,000 |
Virginia Power and Stonepeak | CVOW Commercial Project |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Remaining capital percentage |  |  |  |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |
Virginia Power and Stonepeak | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total project costs |  |  |  |  | $ 11,300,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Corporate Office Building |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of office building |  |  |  |  |  |  |  |  |  |  |  |  |  | 40,000,000 |  |  |
Sale of utility property |  |  |  |  |  |  | 19,000,000 |  |  |  |  |  |  |  |  |  |
Level 3 | Corporate Office Building |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-lived assets, estimated fair value |  |  |  |  |  |  | 23,000,000 |  |  |  |  | 23,000,000 |  | 35,000,000 |  |  |
Level 3 | Nonregulated renewable natural gas facilities | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-lived assets, estimated fair value |  |  |  |  |  |  | $ 1,000,000 |  |  |  |  | 1,000,000 |  |  |  |  |
Impairment of Assets and Other Charges | Corporate Office Building |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment of assets and other charges |  |  |  |  |  |  |  |  |  |  |  | 17,000,000 |  | 93,000,000 |  |  |
Asset impairment charges after tax |  |  |  |  |  |  |  |  |  |  |  | 12,000,000 |  | 69,000,000 |  |  |
Impairment of Assets and Other Charges | Nonregulated renewable natural gas facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment of assets and other charges |  |  |  |  |  |  |  | 27,000,000 | 33,000,000 |  |  |  |  |  |  |  |
Asset impairment charges after tax |  |  |  |  |  |  |  | $ 21,000,000 | $ 25,000,000 |  |  |  |  |  |  |  |
Acquisition of Wind Project |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Offshore wind project price expected |  |  |  | $ 160,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Virginia Electric and Power Company |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income tax expense (benefit) | [4] |  |  |  |  |  |  |  |  |  |  | $ 408,000,000 |  | 389,000,000 |  | 294,000,000 |
Percentage of remaining construction costs, including contingency |  |  |  |  |  |  | 5.00% |  |  |  |  | 5.00% |  |  |  |  |
Noncontrolling interests |  |  |  |  |  |  |  |  |  |  |  | $ (53,000,000) | [5] | 0 |  | 0 |
Percentage of proceeds from sale of non controlling interests in CVOW commercial project |  |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Project easement cost paid |  | $ 65,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Easement charges before tax |  | 65,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Easement charges after tax |  | $ 49,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Virginia Electric and Power Company | CVOW Commercial Project |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership percentage |  |  | 50.00% |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |
Income tax expense (benefit) |  |  |  |  |  |  | $ (26,000,000) |  |  |  |  |  |  |  |  |  |
Charge for costs not expected to be recovered |  |  |  |  |  |  | $ 206,000,000 |  |  |  |  |  |  |  |  |  |
Percentage of remaining construction costs, including contingency |  |  |  |  |  |  | 5.00% |  |  |  |  | 5.00% |  |  |  |  |
Noncontrolling interests |  |  |  |  |  |  | $ 103,000,000 |  |  |  |  |  |  |  |  |  |
Anticipated projected cost |  |  |  |  |  | $ 600,000,000 | 10,700,000,000 |  |  |  |  | $ 10,700,000,000 |  |  |  |  |
Increase for increased contingency for remaining construction activities |  |  |  |  |  | 300,000,000 |  |  |  |  |  |  |  |  |  |  |
Virginia Electric and Power Company | CVOW Commercial Project Excluding Financing Costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Initial withholding amount |  |  | $ 100,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Virginia Electric and Power Company | CVOW Commercial Project Excluding Financing Costs Condition Two |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from sale of non controlling interests in CVOW commercial project |  |  | 2,600,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Virginia Electric and Power Company | Maximum | CVOW Commercial Project |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Incremental cost recovery amount |  |  |  |  |  |  |  |  |  |  |  | 11,300,000,000 |  |  |  |  |
Incremental cost excluded from recovery amount |  |  |  |  |  |  |  |  |  |  |  | 13,700,000,000 |  |  |  |  |
Construction costs |  |  |  |  |  |  |  |  |  |  |  | 13,700,000,000 |  |  |  |  |
Virginia Electric and Power Company | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total project costs |  |  |  |  | $ 13,700,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Virginia Electric and Power Company | Minimum | CVOW Commercial Project |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Initial withholding amount |  |  | $ 145,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Incremental cost recovery amount |  |  |  |  |  |  |  |  |  |  |  | 10,300,000,000 |  |  |  |  |
Incremental cost excluded from recovery amount |  |  |  |  |  |  |  |  |  |  |  | 11,300,000,000 |  |  |  |  |
Virginia Electric and Power Company | Impairment of Assets and Other Charges |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment of assets and other charges |  |  |  |  |  |  |  |  |  |  | $ 191,000,000 | 25,000,000 |  |  |  |  |
Asset impairment charges after tax |  |  |  |  |  |  |  |  |  |  | $ 142,000,000 | 18,000,000 |  |  |  |  |
Virginia Electric and Power Company | End of 2026 | CVOW Commercial Project |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Anticipated projected cost |  |  |  |  |  | $ 10,700,000,000 |  |  |  |  |  |  |  |  |  |  |
Targeted capacity provided by legislation | MW |  |  |  |  |  | 2,600 |  |  |  |  |  |  |  |  |  |  |
Stonepeak | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total project costs |  |  |  |  | 13,700,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Additional capital costs |  |  |  |  | 11,300,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Stonepeak | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total project costs |  |  |  |  | $ 11,300,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Acquisition of Solar Project at Schools in Virginia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Anticipated projected cost |  |  |  |  |  |  | 5,000,000 |  |  |  |  | $ 5,000,000 |  |  |  |  |
Aggregate generation capacity | MW |  |  |  |  |  |  |  |  |  |  |  | 3 |  |  |  |  |
Project cost |  |  |  |  |  |  | $ 16,000,000 |  |  |  |  | $ 16,000,000 |  |  |  |  |
Aggregate generation capacity of service solar facilities | MW |  |  |  |  |  |  |  |  |  |  |  | 7 |  |  |  |  |
Utility Property |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of utility property |  |  |  |  |  |  |  |  |  |  |  |  |  | 12,000,000 |  | 20,000,000 |
Gain on sale of asset |  |  |  |  |  |  |  |  |  |  |  |  |  | 11,000,000 |  | 20,000,000 |
Gain on sale of asset after tax |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 8,000,000 |  | $ 15,000,000 |
Acquisition of Offshore Wind Project |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Date Agreement Entered |  |  |  | 2024-07 |  |  |  |  |  |  |  |  |  |  |  |  |
Acres Of Area Acquired | a |  |  |  | 40,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Miles Of Area Acquired | mi |  |  |  | 27 |  |  |  |  |  |  |  |  |  |  |  |  |
Date Agreement Closed |  |  |  |  |  |  |  |  |  |  |  | October 2024 |  |  |  |  |
Power generating capacity | MW |  |  |  | 800 |  |  |  |  |  |  |  |  |  |  |  |  |
[1] | The significant expense categories and amounts in the segment information presented above align with the segment-level information that is regularly provided to Dominion Energy’s CODM.
[2] | The significant expense categories and amounts in the segment information presented above align with the segment-level information that is regularly provided to Dominion Energy’s CODM.
[3] | The significant expense categories and amounts in the segment information presented above align with the segment-level information that is regularly provided to Dominion Energy’s CODM.
[4] | The significant expense categories and amounts in the segment information presented above align with the segment-level information that is regularly provided to Virginia Power’s CODM.
[5] | Items designated are other segment items for each reportable segment.

X
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