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Operating Revenue (Schedule of Operating Revenue) (Detail) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | $ 3,536 | $ 3,623 | $ 10,350 | $ 9,993
Other revenues | [1],[2] | 71 | 159 | 301 | 513
Total operating revenue |  | 3,607 | 3,782 | 10,651 | 10,506
Regulated Electric Sales | Residential |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 1,497 | 1,440 | 3,746 | 3,180
Regulated Electric Sales | Commercial |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 865 | 962 | 2,391 | 2,347
Regulated Electric Sales | Industrial |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 190 | 227 | 548 | 474
Regulated Electric Sales | Government and Other Retail |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 239 | 244 | 651 | 658
Regulated Electric Sales | Wholesale |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 37 | 45 | 99 | 134
Nonregulated Electric Sales |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 218 | 197 | 627 | 688
Regulated Gas Sales | Residential |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 123 | 121 | 853 | 905
Regulated Gas Sales | Commercial |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 50 | 52 | 304 | 311
Regulated Gas Sales | Other |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 18 | 23 | 61 | 84
Nonregulated Gas Sales |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 12 | 51 | 124 | 369
Regulated Gas Transportation and Storage - State |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 165 | 168 | 578 | 547
Other Regulated Revenues |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers | [3] | 61 | 54 | 236 | 184
Other Nonregulated Revenues |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers | [3],[4] | 61 | 39 | 132 | 112
Virginia Electric and Power Company |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 2,231 | 2,250 | 5,905 | 6,116
Other revenues | [2],[4] | 17 | 14 | 78 | 51
Total operating revenue |  | 2,248 | 2,264 | 5,983 | 6,167
Virginia Electric and Power Company | Regulated Electric Sales | Residential |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 1,146 | 1,085 | 2,860 | 2,816
Virginia Electric and Power Company | Regulated Electric Sales | Commercial |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 645 | 732 | 1,805 | 2,049
Virginia Electric and Power Company | Regulated Electric Sales | Industrial |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 98 | 121 | 284 | 351
Virginia Electric and Power Company | Regulated Electric Sales | Government and Other Retail |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 223 | 224 | 603 | 625
Virginia Electric and Power Company | Regulated Electric Sales | Wholesale |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 25 | 31 | 70 | 97
Virginia Electric and Power Company | Other Regulated Revenues |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 61 | 36 | 217 | 124
Virginia Electric and Power Company | Other Nonregulated Revenues |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers | [3],[4] | $ 33 | $ 21 | $ 66 | $ 54
[1] | Amounts above include revenue associated with services provided to discontinued operations of $1 million and $4 million for both the three and nine months ended September 30, 2020 and 2019, respectively.
[2] | Amounts above include alternative revenue of $51 million and $9 million at Dominion Energy and $12 million and $9 million at Virginia Power for the three months ended September 30, 2020 and 2019, respectively, and $90 million and $44million at Dominion Energy and $63 million and $35 million at Virginia Power for the nine months ended September 30, 2020 and 2019, respectively.
[3] | Amounts above include sales which are considered to be goods transferred at a point in time. Such amounts included $5 million for the three months ended September 30, 2020, $12 million for the three months ended September 30, 2019, $16 million for the nine months ended September 30, 2020 and $29 million for the nine months ended September 30, 2019, primarily consisting of sales of commodities related to nonregulated extraction activities and other miscellaneous products. Additionally, amounts above include sales of renewable energy credits. Such amounts included $21 million and $16 million for the three months ended September 30, 2020, $12 million and $11 million for the three months ended September 30, 2019, $32 million and $24 million for the nine months ended September 30, 2020 and $19 million and $14 million for the nine months ended September 30, 2019, at Dominion Energy and Virginia Power, respectively.
[4] | See Notes 10 and 19 for amounts attributable to related parties and affiliates.

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