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Operating Revenue (Schedule of Operating Revenue) (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Public Utilities General Disclosures [Line Items] |  |  |  |
Operating revenue from contracts with customers |  | $ 13,752 | $ 13,745 | $ 10,891
Other revenues | [1],[2] | 420 | 656 | 308
Total operating revenue |  | 14,172 | 14,401 | 11,199
Regulated Electric Sales | Residential |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |
Operating revenue from contracts with customers |  | 4,833 | 4,325 | 3,413
Regulated Electric Sales | Commercial |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |
Operating revenue from contracts with customers |  | 3,102 | 3,219 | 2,503
Regulated Electric Sales | Industrial |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |
Operating revenue from contracts with customers |  | 730 | 683 | 490
Regulated Electric Sales | Government and Other Retail |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |
Operating revenue from contracts with customers |  | 868 | 873 | 854
Regulated Electric Sales | Wholesale |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |
Operating revenue from contracts with customers |  | 128 | 176 | 137
Nonregulated Electric Sales |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |
Operating revenue from contracts with customers |  | 803 | 926 | 1,294
Regulated Gas Sales | Residential |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |
Operating revenue from contracts with customers |  | 1,283 | 1,343 | 818
Regulated Gas Sales | Commercial |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |
Operating revenue from contracts with customers |  | 457 | 457 | 221
Regulated Gas Sales | Other |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |
Operating revenue from contracts with customers |  | 88 | 109 | 11
Nonregulated Gas Sales |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |
Operating revenue from contracts with customers |  | 174 | 495 | 210
Regulated Gas Transportation and Storage |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |
Operating revenue from contracts with customers |  | 801 | 742 | 640
Other Regulated Revenues |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |
Operating revenue from contracts with customers |  | 327 | 252 | 178
Other Nonregulated Revenues |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |
Operating revenue from contracts with customers | [3],[4] | 158 | 145 | 122
Virginia Electric and Power Company |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |
Operating revenue from contracts with customers |  | 7,661 | 8,036 | 7,584
Other revenues | [1],[4] | 102 | 72 | 35
Total operating revenue |  | 7,763 | 8,108 | 7,619
Virginia Electric and Power Company | Regulated Electric Sales | Residential |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |
Operating revenue from contracts with customers |  | 3,677 | 3,657 | 3,413
Virginia Electric and Power Company | Regulated Electric Sales | Commercial |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |
Operating revenue from contracts with customers |  | 2,342 | 2,712 | 2,503
Virginia Electric and Power Company | Regulated Electric Sales | Industrial |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |
Operating revenue from contracts with customers |  | 380 | 455 | 490
Virginia Electric and Power Company | Regulated Electric Sales | Government and Other Retail |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |
Operating revenue from contracts with customers |  | 804 | 823 | 854
Virginia Electric and Power Company | Regulated Electric Sales | Wholesale |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |
Operating revenue from contracts with customers |  | 90 | 128 | 137
Virginia Electric and Power Company | Other Regulated Revenues |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |
Operating revenue from contracts with customers |  | 299 | 190 | 132
Virginia Electric and Power Company | Other Nonregulated Revenues |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |
Operating revenue from contracts with customers | [3],[4] | $ 69 | $ 71 | $ 55
[1] | Amounts above include alternative revenue of $119 million and $82 million for the year ended December 31, 2020 at Dominion Energy and Virginia Power, $66 million and $52 million for year ended December 31, 2019 at Dominion Energy and Virginia Power, respectively, and $15 million for year ended December 31, 2018 at both Dominion Energy and Virginia Power.
[2] | Amounts above include revenue associated with services provided to entities presented in discontinued operations of $4 million for the year ended December 31, 2020 and $6 million for both years ended December 31, 2019 and 2018.
[3] | Amounts above include sales which are considered to be goods transferred at a point in time. For the years ended December 31, 2020, 2019 and 2018, such amounts included $22 million, $37 million and $19 million, respectively, at Dominion Energy, primarily consisting of sales of commodities related to nonregulated extraction activities and other miscellaneous products. Additionally, amounts above include sales of renewable energy credits. For the years ended December 31, 2020, 2019 and 2018, such sales were $20 million, $24 million and $17 million, respectively, at Dominion Energy and $11 million, $17 million and $11 million, respectively, at Virginia Power.
[4] | See Notes 9 and 25 for amounts attributable to related parties and affiliates.

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