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Acquisitions and Dispositions - (Schedule of Results of Operations of Disposal Groups Reported As Discontinued Operations) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |
Income tax expense (benefit) |  | $ 1,200 |  | $ 53 |  | $ 1,300 |  | $ 185 |
Net income (loss) attributable to Dominion Energy | [1] | (554) |  | 152 |  | (105) |  | 775 |
East Ohio | Enbridge |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |
Operating revenue |  | 214 |  | 206 |  | 761 |  | 738 |
Operating expense |  | 128 | [2] | 140 |  | 497 | [2] | 503 |
Other income (expense) |  | 7 |  | 7 |  | 22 |  | 21 |
Interest and related charges |  | 19 |  | 12 |  | 51 |  | 21 |
Income (loss) before income taxes |  | 74 |  | 61 |  | 235 |  | 235 |
Income tax expense (benefit) |  | 39 | [3] | 5 |  | 58 | [3] | 29 |
Net income (loss) attributable to Dominion Energy |  | 35 | [4] | 56 | [5] | 177 | [4] | 206 | [5]
PSNC | Enbridge |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |
Operating revenue |  | 86 |  | 93 |  | 532 |  | 539 |
Operating expense |  | 80 | [2] | 94 |  | 386 | [2] | 406 |
Other income (expense) |  | 3 |  | 3 |  | 8 |  | 6 |
Interest and related charges |  | 13 |  | 11 |  | 38 |  | 30 |
Income (loss) before income taxes |  | (4) |  | (9) |  | 116 |  | 109 |
Income tax expense (benefit) |  | 383 | [3] | (2) |  | 409 | [3] | 23 |
Net income (loss) attributable to Dominion Energy |  | (387) | [4] | (7) | [5] | (293) | [4] | 86 | [5]
Questar Gas and Wexpro | Enbridge |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |
Operating revenue |  | 150 |  | 114 |  | 1,151 |  | 846 |
Operating expense |  | 127 | [2] | 100 |  | 939 | [2] | 658 |
Other income (expense) |  | 3 |  |  |  | 6 |  |  |
Interest and related charges |  | 17 |  | 11 |  | 50 |  | 31 |
Income (loss) before income taxes |  | 9 |  | 3 |  | 168 |  | 157 |
Income tax expense (benefit) |  | 525 | [3] | (2) |  | 557 | [3] | 29 |
Net income (loss) attributable to Dominion Energy |  | (516) | [4] | 5 | [5] | (389) | [4] | 128 | [5]
Other Sales | Tredegar Solar Fund I, LLC |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |
Operating revenue |  | 2 |  |  |  | 5 |  | 3 |
Operating expense |  | 7 | [2] | 1 |  | 29 | [2] | 4 |
Interest and related charges |  |  |  |  |  | 1 |  |  |
Income (loss) before income taxes |  | (5) |  | (1) |  | (25) |  | (1) |
Income tax expense (benefit) | [3] | (2) |  |  |  | 7 |  |  |
Net income (loss) attributable to Dominion Energy |  | $ (3) | [4] | $ (1) | [5] | $ (18) | [4] | $ (1) | [5]
[1] | Includes income tax expense of $1.2 billion and $53 million for the three months ended September 30, 2023 and 2022, respectively, and $1.3 billion and $185 million for the nine months ended September 30, 2023 and 2022, respectively.
[2] | Other includes a charge of $15 million ($11 million after-tax) recorded in the second quarter of 2023 associated with the impairment of certain nonregulated solar assets.
[3] | Includes amounts recorded in the third quarter of 2023 to reflect the recognition of deferred taxes on the outside basis of the applicable entities' stock upon meeting the classification as held for sale.
[4] | Excludes $6 million and $2 million of income tax expense attributable to consolidated state and interim period tax allocation adjustments for the three and nine months ended September 30, 2023, respectively.
[5] | Excludes $20 million and $7 million of income tax expense attributable to consolidated state and interim period tax allocation adjustments for the three and nine months ended September 30, 2022, respectively.

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