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Operating Revenue (Schedule of Operating Revenue) (Detail) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2020 | Mar. 31, 2019
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers |  | $ 4,323 | $ 3,631
Other revenues | [1] | 173 | 227
Total operating revenue |  | 4,496 | 3,858
Regulated Electric Sales | Residential |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers |  | 1,158 | 646
Regulated Electric Sales | Commercial |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers |  | 798 | 496
Regulated Electric Sales | Industrial |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers |  | 182 | 30
Regulated Electric Sales | Government and Other Retail |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers |  | 219 | 200
Regulated Electric Sales | Wholesale |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers |  | 33 | 48
Nonregulated Electric Sales |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers |  | 232 | 316
Regulated Gas Sales | Residential |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers |  | 548 | 602
Regulated Gas Sales | Commercial |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers |  | 191 | 191
Regulated Gas Sales | Other |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers |  | 28 | 38
Nonregulated Gas Sales |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers |  | 83 | 247
Regulated Gas Transportation and Storage | FERC-regulated |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers |  | 281 | 277
Regulated Gas Transportation and Storage | State-regulated |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers |  | 232 | 213
Nonregulated gas transportation and storage |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers |  | 175 | 174
Other Regulated Revenues |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers | [2] | 75 | 58
Other Nonregulated Revenues |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers | [2],[3] | 88 | 95
Virginia Electric and Power Company |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers |  | 1,909 | 1,951
Other revenues | [1],[3] | 21 | 14
Total operating revenue |  | 1,930 | 1,965
Virginia Electric and Power Company | Regulated Electric Sales | Residential |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers |  | 896 | 923
Virginia Electric and Power Company | Regulated Electric Sales | Commercial |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers |  | 614 | 636
Virginia Electric and Power Company | Regulated Electric Sales | Industrial |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers |  | 97 | 112
Virginia Electric and Power Company | Regulated Electric Sales | Government and Other Retail |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers |  | 203 | 204
Virginia Electric and Power Company | Regulated Electric Sales | Wholesale |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers |  | 24 | 37
Virginia Electric and Power Company | Other Regulated Revenues |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers | [3] | 62 | 33
Virginia Electric and Power Company | Other Nonregulated Revenues |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers | [2],[3] | 13 | 6
Dominion Energy Gas Holdings, LLC |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers |  | 555 | 565
Other revenues |  | 1 | 1
Total operating revenue |  | 556 | 566
Dominion Energy Gas Holdings, LLC | Regulated Gas Sales | Wholesale |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers |  | 2 | 2
Dominion Energy Gas Holdings, LLC | Regulated Gas Transportation and Storage |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers |  | 344 | 340
Dominion Energy Gas Holdings, LLC | Nonregulated gas transportation and storage |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers |  | 175 | 174
Dominion Energy Gas Holdings, LLC | Other Regulated Revenues |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers | [2],[3] | 1 | 3
Dominion Energy Gas Holdings, LLC | Other Nonregulated Revenues |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers | [2],[3] | 1 |
Dominion Energy Gas Holdings, LLC | Nonregulated Gas Sale |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers | [3] | 1 | 2
Dominion Energy Gas Holdings, LLC | Management Service |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers | [3] | $ 31 | $ 44
[1] | Includes alternative revenue. For the three months ended March 31, 2020 and 2019, such amounts included $36 million and $14 million, respectively, at Dominion Energy and $17 million and $8 million, respectively, at Virginia Power.
[2] | Amounts above include sales which are considered to be goods transferred at a point in time. For the three months ended March 31, 2020 and 2019, such amounts included $39 million and $48 million, respectively, at Dominion Energy and $1 million for both the three months ended March 31, 2020 and 2019, at Dominion Energy Gas, consisting of NGL sales. Additionally, amounts above include sales of renewable energy credits. For the three months ended March 31, 2020 and 2019, such sales were $4 million and $3 million, respectively, at Dominion Energy and $3 million and $1 million, respectively, at Virginia Power.
[3] | See Notes 10 and 19 for amounts attributable to related parties and affiliates.

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