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Operating Revenue (Schedule of Operating Revenue) (Detail) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | $ 3,746 | $ 2,945 | $ 7,376 | $ 6,269
Other revenues | [1] | 224 | 143 | 452 | 285
Operating revenue | [2] | 3,970 | 3,088 | 7,828 | 6,554
Regulated Electric Sales | Residential |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 1,094 | 788 | 1,740 | 1,605
Regulated Electric Sales | Commercial |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 889 | 636 | 1,385 | 1,160
Regulated Electric Sales | Industrial |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 217 | 121 | 247 | 228
Regulated Electric Sales | Government and Other Retail |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 214 | 210 | 414 | 423
Regulated Electric Sales | Wholesale |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 41 | 23 | 89 | 65
Nonregulated Electric Sales |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 175 | 282 | 491 | 700
Regulated Gas Sales | Residential |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 177 | 116 | 779 | 480
Regulated Gas Sales | Commercial |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 73 | 34 | 264 | 137
Regulated Gas Sales | Other |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 25 | 1 | 63 | 11
Nonregulated Gas Sales |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 71 | 9 | 318 | 97
Regulated Gas Transportation and Storage | FERC-regulated |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 247 | 272 | 524 | 534
Regulated Gas Transportation and Storage | State-regulated |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 166 | 144 | 379 | 334
Nonregulated gas transportation and storage |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 174 | 124 | 348 | 124
Other Regulated Revenues |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers | [3] | 82 | 44 | 126 | 94
Other Nonregulated Revenues |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers | [3],[4] | 101 | 141 | 209 | 277
Virginia Electric and Power Company |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 1,914 | 1,829 | 3,866 | 3,577
Other revenues | [1],[4] | 24 |  | 37 |
Operating revenue |  | 1,938 | 1,829 | 3,903 | 3,577
Virginia Electric and Power Company | Regulated Electric Sales | Residential |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 808 | 788 | 1,731 | 1,605
Virginia Electric and Power Company | Regulated Electric Sales | Commercial |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 681 | 636 | 1,317 | 1,160
Virginia Electric and Power Company | Regulated Electric Sales | Industrial |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 118 | 121 | 230 | 228
Virginia Electric and Power Company | Regulated Electric Sales | Government and Other Retail |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 197 | 210 | 401 | 423
Virginia Electric and Power Company | Regulated Electric Sales | Wholesale |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 29 | 23 | 66 | 65
Virginia Electric and Power Company | Other Regulated Revenues |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 62 | 33 | 88 | 65
Virginia Electric and Power Company | Other Nonregulated Revenues |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers | [4] | 19 | 18 | 33 | 31
Dominion Energy Gas Holdings, LLC |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 529 | 507 | 1,094 | 896
Other revenues |  | 1 | 1 | 2 | 2
Operating revenue | [5] | 530 | 508 | 1,096 | 898
Dominion Energy Gas Holdings, LLC | Regulated Gas Sales | Wholesale |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  |  |  | 2 | 6
Dominion Energy Gas Holdings, LLC | Nonregulated Gas Sales |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers | [4] | 1 | 1 | 3 | 3
Dominion Energy Gas Holdings, LLC | Regulated Gas Transportation and Storage |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 306 | 303 | 646 | 616
Dominion Energy Gas Holdings, LLC | Nonregulated gas transportation and storage |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers |  | 173 | 124 | 348 | 124
Dominion Energy Gas Holdings, LLC | Other Regulated Revenues |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers | [4] | 3 | 6 | 6 | 14
Dominion Energy Gas Holdings, LLC | Other Nonregulated Revenues |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers | [3],[4] | 1 |  | 1 | 1
Dominion Energy Gas Holdings, LLC | Management Service |  |  |  |  |
Public Utilities General Disclosures [Line Items] |  |  |  |  |
Operating revenue from contracts with customers | [4] | $ 45 | $ 73 | $ 88 | $ 132
[1] | Amounts above include alternative revenue of $21 million and $35 million at Dominion Energy and $18 million and $26 million at Virginia Power for the three and six months ended June 30, 2019, respectively.
[2] | See Note 10 for amounts attributable to related parties.
[3] | Amounts above include $42 million and $2 million for the three months ended June 30, 2019, $33 million and $3 million for the three months ended June 30, 2018, $93 and $3 million for the six months ended June 30, 2019 and $63 million and $6 million for the six months ended June 30, 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 20 for amounts attributable to related parties and affiliates.
[5] | See Note 20 for amounts attributable to related parties.

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