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Operating Revenue (Schedule of Operating Revenue) (Detail) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | $ 3,758 | $ 4,236 | $ 10,290 | $ 10,967
Other revenues | [1],[2] | 52 | (273) | 569 | (832)
Total operating revenue |  | 3,810 | 3,963 | 10,859 | 10,135
Regulated Electric Sales | Residential |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 1,558 | 1,609 | 3,968 | 4,013
Regulated Electric Sales | Commercial |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 1,236 | 1,349 | 3,453 | 3,336
Regulated Electric Sales | Industrial |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 227 | 253 | 658 | 670
Regulated Electric Sales | Government and Other Retail |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 288 | 353 | 764 | 922
Regulated Electric Sales | Wholesale |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 53 | 66 | 133 | 181
Nonregulated Electric Sales |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 229 | 345 | 611 | 948
Regulated Gas Sales | Residential |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 28 | 32 | 207 | 247
Regulated Gas Sales | Commercial |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 25 | 36 | 106 | 141
Regulated Gas Sales | Other |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 19 | 55 | 58 | 132
Regulated Gas Transportation and Storage |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 4 | 11 | 13 | 35
Other Regulated Revenues |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 61 | 68 | 204 | 208
Other Nonregulated Revenues |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers | [2],[3] | 30 | 59 | 115 | 134
Virginia Electric and Power Company |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 2,598 | 2,959 | 7,133 | 7,394
Other revenues | [1],[2] | 47 | (84) | 147 | (177)
Total operating revenue |  | 2,645 | 2,875 | 7,280 | 7,217
Virginia Electric and Power Company | Regulated Electric Sales | Residential |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 1,133 | 1,238 | 2,975 | 3,069
Virginia Electric and Power Company | Regulated Electric Sales | Commercial |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 962 | 1,105 | 2,745 | 2,696
Virginia Electric and Power Company | Regulated Electric Sales | Industrial |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 109 | 134 | 324 | 347
Virginia Electric and Power Company | Regulated Electric Sales | Government and Other Retail |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 269 | 335 | 711 | 874
Virginia Electric and Power Company | Regulated Electric Sales | Wholesale |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 37 | 38 | 88 | 101
Virginia Electric and Power Company | Nonregulated Electric Sales |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 22 | 17 | 55 | 62
Virginia Electric and Power Company | Other Regulated Revenues |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 57 | 64 | 193 | 195
Virginia Electric and Power Company | Other Nonregulated Revenues |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers | [2],[3] | $ 9 | $ 28 | $ 42 | $ 50
[1] | Includes alternative revenue of $34 million and $20 million for the three months ended September 30, 2023 and 2022, respectively, and $111 million and $47 million for the nine months ended September 30, 2023 and 2022, respectively, at both Dominion Energy and Virginia Power.
[2] | See Note 19 for amounts attributable to affiliates.
[3] | Includes sales of renewable energy credits were $7 million and $21 million for the three months ended September 30, 2023 and 2022, respectively, and $36 million and $32 million for the nine months ended September 30, 2023 and 2022, respectively, at Dominion Energy and $2 million and $13 million for the three months ended September 30, 2023 and 2022, respectively, and $24 million and $13 million for the nine months ended September 30, 2023 and 2022, respectively, at Virginia Power.

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