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Operating Revenue (Schedule of Operating Revenue) (Detail) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2019 | Mar. 31, 2018
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers |  | $ 3,631 | $ 3,324
Other revenues | [1] | 227 | 142
Operating revenue | [2] | 3,858 | 3,466
Regulated Electric Sales | Residential |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers |  | 646 | 817
Regulated Electric Sales | Commercial |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers |  | 496 | 524
Regulated Electric Sales | Industrial |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers |  | 30 | 107
Regulated Electric Sales | Government and Other Retail |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers |  | 200 | 213
Regulated Electric Sales | Wholesale |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers |  | 48 | 42
Nonregulated Electric Sales |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers |  | 316 | 418
Regulated Gas Sales | Residential |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers |  | 602 | 364
Regulated Gas Sales | Commercial |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers |  | 191 | 103
Regulated Gas Sales | Other |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers |  | 38 | 10
Nonregulated Gas Sales |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers |  | 247 | 88
Regulated Gas Transporation and Storage | FERC-regulated |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers |  | 277 | 262
Regulated Gas Transporation and Storage | State-regulated |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers |  | 213 | 190
Nonregulated Gas Transporation and Storage |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers |  | 174 | 0
Other Regulated Revenues |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers | [3] | 58 | 50
Other Nonregulated Revenues |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers | [3],[4] | 95 | 136
Virginia Electric and Power Company |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers |  | 1,951 | 1,748
Other revenues | [1],[4] | 14 | 0
Operating revenue | [5] | 1,965 | 1,748
Virginia Electric and Power Company | Regulated Electric Sales | Residential |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers |  | 923 | 817
Virginia Electric and Power Company | Regulated Electric Sales | Commercial |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers |  | 636 | 524
Virginia Electric and Power Company | Regulated Electric Sales | Industrial |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers |  | 112 | 107
Virginia Electric and Power Company | Regulated Electric Sales | Government and Other Retail |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers |  | 204 | 213
Virginia Electric and Power Company | Regulated Electric Sales | Wholesale |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers |  | 37 | 42
Virginia Electric and Power Company | Other Regulated Revenues |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers |  | 33 | 32
Virginia Electric and Power Company | Other Nonregulated Revenues |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers | [4] | 6 | 13
Dominion Energy Gas Holdings, LLC |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers |  | 511 | 528
Other revenues |  | 0 | (2)
Operating revenue | [6] | 511 | 526
Dominion Energy Gas Holdings, LLC | Regulated Gas Transporation and Storage | FERC-regulated |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers | [4] | 204 | 199
Dominion Energy Gas Holdings, LLC | Regulated Gas Transporation and Storage | State-regulated |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers | [4] | 187 | 180
Dominion Energy Gas Holdings, LLC | Regulated Gas Transporation and Storage | Residential |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers |  | 30 | 29
Dominion Energy Gas Holdings, LLC | Regulated Gas Transporation and Storage | Other |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers |  | 2 | 7
Dominion Energy Gas Holdings, LLC | Nonregulated Gas Transporation and Storage |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers | [4] | 2 | 2
Dominion Energy Gas Holdings, LLC | Other Regulated Revenues |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers | [4] | 8 | 8
Dominion Energy Gas Holdings, LLC | Other Nonregulated Revenues |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers | [3],[4] | 2 | 2
Dominion Energy Gas Holdings, LLC | NGL Production |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers | [3],[4] | 45 | 54
Dominion Energy Gas Holdings, LLC | Management Service |  |  |
Public Utilities General Disclosures [Line Items] |  |  |
Operating revenue from contracts with customers | [4] | $ 31 | $ 47
[1] | Amounts above include $14 million and $8 million of alternative revenue at Dominion Energy and Virginia Power for the three months ended March 31, 2019, respectively.
[2] | See Note 10 for amounts attributable to related parties.
[3] | Amounts above include $51 million and $42 million for the three months ended March 31, 2019, and $30 million and $26 million for the three months ended March 31, 2018 primarily consisting of NGL sales at Dominion Energy and Dominion Energy Gas, respectively, which are considered to be goods transferred at a point in time.
[4] | See Notes 10 and 19 for amounts attributable to related parties and affiliates
[5] | See Note 19 for amounts attributable to affiliates.
[6] | See Note 19 for amounts attributable to related parties.

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