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v3.25.3

Property, Plant and Equipment (Narrative) (Detail) $ in Millions | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2025 USD ($) | Sep. 30, 2024 USD ($) | Jun. 30, 2024 USD ($) | Sep. 30, 2025 USD ($) | Sep. 30, 2024 USD ($) | Dec. 31, 2024 USD ($) MVA
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Noncontrolling Interests | $ 22 | [1] | $ 0 |  |  | $ 122 | [2] | $ 0 |  |
Income tax expense (benefit) | 216 | [3] | 213 | [3] |  | 476 | [4] | 421 | [4] |
Impairment of assets and other charges | 130 |  | 122 |  |  | 226 |  | 219 |  |
Corporate Office Building | Level 3 |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Long-lived assets, estimated fair values |  |  |  |  | $ 23 |  |  |  |  |
Corporate Office Building | Impairment of Assets and Other Charges |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Impairment of assets and other charges |  |  |  |  | 17 |  |  |  |  |
Asset impairment charges after tax |  |  |  |  | 12 |  |  |  |  |
Nonregulated renewable natural gas facilities | Minimum | Level 3 |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Long-lived assets, estimated fair values |  |  | 1 |  | 1 |  |  | 1 |  |
Nonregulated renewable natural gas facilities | Impairment of Assets and Other Charges |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Impairment of assets and other charges |  |  | 27 |  | 33 |  |  |  |  |
Asset impairment charges after tax |  |  | 21 |  | $ 25 |  |  |  |  |
Virginia Electric and Power Company |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Noncontrolling Interests | 22 | [5] | 0 |  |  | 122 | [6] | 0 |  |
Income tax expense (benefit) | 151 | [7] | $ 146 | [7] |  | 356 | [8] | $ 399 | [8] |
Virginia Electric and Power Company | CVOW Commercial Project |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Charge for costs not expected to be recovered | 128 |  |  |  |  | 224 |  |  |  |
Noncontrolling Interests | $ 64 |  |  |  |  | $ 112 |  |  |  |
Percentage of remaining construction costs, including contingency | 7.00% |  |  |  |  | 7.00% |  |  |  |
Income tax expense (benefit) | $ 16 |  |  |  |  | $ 28 |  |  |  |
Ownership percentage |  |  |  |  |  |  |  |  |  | 50.00%
Virginia Electric and Power Company | CVOW Commercial Project | End of 2026 |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Targeted capacity provided by legislation | MVA |  |  |  |  |  |  |  |  |  | 2.6
Anticipated projected cost |  |  |  |  |  |  |  |  |  | $ 11,200
Virginia Electric and Power Company | CVOW Commercial Project | End of 2026 | Maximum |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Anticipated projected cost | 200 |  |  |  |  | 200 |  |  |  |
Virginia Electric and Power Company | CVOW Commercial Project | August 2025 Construction Update Filing |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Anticipated projected cost | 300 |  |  |  |  | 300 |  |  |  |
Virginia Electric and Power Company | CVOW Commercial Project | February 2025 Construction Update Filing |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Anticipated projected cost | $ 500 |  |  |  |  | $ 500 |  |  |  |
[1] | Items designated are other segment items for each reportable segment.
[2] | Items designated are other segment items for each reportable segment.
[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 Dominion Energy’s CODM.
[5] | Items designated are other segment items for each reportable segment.
[6] | Items designated are other segment items for each reportable segment.
[7] | 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.
[8] | 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.

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