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v3.22.1

Operating Segments (Schedule of Segment Reporting Information, by Segment, Virginia Power) (Detail) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2022 | Mar. 31, 2021
Segment Reporting Information [Line Items] |  |  |
Operating Revenue |  | $ 4,279 | $ 3,870
Net income (loss) attributable to Dominion Energy |  | 711 | 1,008
Virginia Electric and Power Company |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating Revenue | [1] | 2,167 | 1,830
Net income (loss) attributable to Dominion Energy |  | 357 | 374
Dominion Energy Virginia |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating Revenue |  | 2,169 | 1,985
Dominion Energy Virginia | Virginia Electric and Power Company |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating Revenue |  | 2,165 | 1,981
Net income (loss) attributable to Dominion Energy |  | 516 | 432
Corporate and Other |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating Revenue |  | 72 | 100
Corporate and Other | Virginia Electric and Power Company |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating Revenue |  | 2 | (151)
Net income (loss) attributable to Dominion Energy |  | $ (159) | $ (58)
[1] | See Note 19 for amounts attributable to affiliates.

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