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v3.23.1

Operating Segments (Schedule of Segment Reporting Information, by Segment) (Detail) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2023 | Mar. 31, 2022
Segment Reporting Information [Line Items] |  |  |
Operating Revenue |  | $ 5,252 | $ 4,279
Net Income (Loss) from discontinued operations including noncontrolling interest | [1] | (5) | 19
Net income (loss) attributable to Dominion Energy |  | 997 | 711
Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating Revenue |  | 5,252 | 4,279
Adjustments & Eliminations |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating Revenue |  | 0 | 0
Net Income (Loss) from discontinued operations including noncontrolling interest |  | 0 | 0
Net income (loss) attributable to Dominion Energy |  | 0 | 0
Intersegment revenue |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating Revenue |  | 0 | 0
Adjustments & Eliminations |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating Revenue |  | (254) | (240)
Eliminations |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating Revenue |  | (254) | (240)
Dominion Energy Virginia |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating Revenue |  | 2,388 | 2,169
Dominion Energy Virginia | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating Revenue |  | 2,389 | 2,172
Net Income (Loss) from discontinued operations including noncontrolling interest |  | 0 | 0
Net income (loss) attributable to Dominion Energy |  | 386 | 518
Dominion Energy Virginia | Intersegment revenue |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating Revenue |  | (1) | (3)
Gas Distribution |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating Revenue |  | 1,368 | 1,230
Gas Distribution | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating Revenue |  | 1,367 | 1,229
Net Income (Loss) from discontinued operations including noncontrolling interest |  | 0 | 0
Net income (loss) attributable to Dominion Energy |  | 278 | 294
Gas Distribution | Intersegment revenue |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating Revenue |  | 1 | 1
Dominion Energy South Carolina |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating Revenue |  | 845 | 799
Dominion Energy South Carolina | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating Revenue |  | 844 | 798
Net Income (Loss) from discontinued operations including noncontrolling interest |  | 0 | 0
Net income (loss) attributable to Dominion Energy |  | 91 | 109
Dominion Energy South Carolina | Intersegment revenue |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating Revenue |  | 1 | 1
Contracted Assets |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating Revenue |  | 311 | 249
Contracted Assets | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating Revenue |  | 308 | 245
Net Income (Loss) from discontinued operations including noncontrolling interest |  | 0 | 0
Net income (loss) attributable to Dominion Energy |  | 156 | 101
Contracted Assets | Intersegment revenue |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating Revenue |  | 3 | 4
Corporate and Other |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating Revenue |  | 594 | 72
Corporate and Other | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating Revenue |  | 344 | (165)
Net Income (Loss) from discontinued operations including noncontrolling interest |  | (5) | 19
Net income (loss) attributable to Dominion Energy |  | 86 | (311)
Corporate and Other | Intersegment revenue |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating Revenue |  | $ 250 | $ 237
[1] | Includes income tax expense (benefit) of $(1) million and $6 million for the three months ended three months ended March 31, 2023 and 2022, respectively.

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