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Operating Segments (Tables) | 9 Months Ended
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Sep. 30, 2019
Segment Reporting Information [Line Items] |
Segment Reporting Disclosure Other Information | A description of the operations included in the Companies’ primary operating segments is as follows:
Primary Operating Segment |  | Description of Operations |  | Dominion Energy |  | Virginia Power |  | Dominion Energy Gas
Power Delivery |  | Regulated electric distribution |  | X |  | X |  |
|  | Regulated electric transmission |  | X |  | X |  |
Power Generation |  | Regulated electric generation fleet |  | X |  | X |  |
|  | Merchant electric generation fleet |  | X |  |  |  |
Gas Infrastructure |  | Gas transmission and storage |  | X |  |  |  | X
|  | Gas distribution and storage |  | X |  |  |  | X
|  | Gas gathering and processing |  | X |  |  |  | X
|  | LNG terminalling and storage |  | X |  |  |  |
|  | Nonregulated retail energy marketing |  | X |  |  |  |
Southeast Energy |  | Regulated electric distribution |  | X |  |  |  |
|  | Regulated electric transmission |  | X |  |  |  |
|  | Regulated electric generation fleet |  | X |  |  |  |
|  | Gas distribution and storage |  | X |  |  |  |
|  | Nonregulated retail energy marketing |  | X |  |  |  |
Schedule of Segment Reporting Information, by Segment | The following table presents segment information pertaining to Dominion Energy’s operations:
|  | Power Delivery |  |  | Power Generation |  |  | Gas Infrastructure |  |  | Southeast Energy |  |  | Corporate and Other |  |  | Adjustments/ Eliminations |  |  | Consolidated Total |
(millions) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Three Months Ended September 30, 2019 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total revenue from external customers |  | $ | 678 |  |  | $ | 1,848 |  |  | $ | 788 |  |  | $ | 973 |  |  | $ | (18 | ) |  | $ | — |  |  | $ | 4,269 |
Intersegment revenue |  |  | 5 |  |  |  | 6 |  |  |  | 28 |  |  |  | — |  |  |  | 164 |  |  |  | (203 | ) |  |  | — |
Total operating revenue |  |  | 683 |  |  |  | 1,854 |  |  |  | 816 |  |  |  | 973 |  |  |  | 146 |  |  |  | (203 | ) |  |  | 4,269 |
Net income (loss) attributable to Dominion Energy |  |  | 185 |  |  |  | 490 |  |  |  | 232 |  |  |  | 147 |  |  |  | (79 | ) |  |  | — |  |  |  | 975 |
Three Months Ended September 30, 2018 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total revenue from external customers |  | $ | 596 |  |  | $ | 2,021 |  |  | $ | 836 |  |  |  |  |  |  | $ | — |  |  | $ | (2 | ) |  | $ | 3,451 |
Intersegment revenue |  |  | 5 |  |  |  | 3 |  |  |  | 7 |  |  |  |  |  |  |  | 160 |  |  |  | (175 | ) |  |  | — |
Total operating revenue |  |  | 601 |  |  |  | 2,024 |  |  |  | 843 |  |  |  |  |  |  |  | 160 |  |  |  | (177 | ) |  |  | 3,451 |
Net income attributable to Dominion Energy |  |  | 163 |  |  |  | 414 |  |  |  | 264 |  |  |  |  |  |  |  | 13 |  |  |  | — |  |  |  | 854 |
Nine Months Ended September 30, 2019 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total revenue from external customers |  | $ | 1,861 |  |  | $ | 5,191 |  |  | $ | 3,042 |  |  | $ | 3,070 |  |  | $ | (1,067 | ) |  | $ | — |  |  | $ | 12,097 |
Intersegment revenue |  |  | 17 |  |  |  | 15 |  |  |  | 83 |  |  |  | — |  |  |  | 611 |  |  |  | (726 | ) |  |  | — |
Total operating revenue |  |  | 1,878 |  |  |  | 5,206 |  |  |  | 3,125 |  |  |  | 3,070 |  |  |  | (456 | ) |  |  | (726 | ) |  |  | 12,097 |
Net income (loss) attributable to Dominion Energy |  |  | 496 |  |  |  | 1,048 |  |  |  | 838 |  |  |  | 361 |  |  |  | (2,394 | ) |  |  | — |  |  |  | 349 |
Nine Months Ended September 30, 2018 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total revenue from external customers |  | $ | 1,687 |  |  | $ | 5,516 |  |  | $ | 2,972 |  |  |  |  |  |  | $ | (210 | ) |  | $ | 40 |  |  | $ | 10,005 |
Intersegment revenue |  |  | 17 |  |  |  | 8 |  |  |  | 21 |  |  |  |  |  |  |  | 505 |  |  |  | (551 | ) |  |  | — |
Total operating revenue |  |  | 1,704 |  |  |  | 5,524 |  |  |  | 2,993 |  |  |  |  |  |  |  | 295 |  |  |  | (511 | ) |  |  | 10,005 |
Net income (loss) attributable to Dominion Energy |  |  | 464 |  |  |  | 1,038 |  |  |  | 840 |  |  |  |  |  |  |  | (536 | ) |  |  | — |  |  |  | 1,806 |
Virginia Electric and Power Company |
Segment Reporting Information [Line Items] |
Schedule of Segment Reporting Information, by Segment | The following table presents segment information pertaining to Virginia Power’s operations:
|  | Power Delivery |  |  | Power Generation |  |  | Corporate and Other |  |  | Consolidated Total |
(millions) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Three Months Ended September 30, 2019 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating revenue |  | $ | 677 |  |  | $ | 1,587 |  |  | $ | — |  |  | $ | 2,264 |
Net income (loss) |  |  | 184 |  |  |  | 444 |  |  |  | (26 | ) |  |  | 602 |
Three Months Ended September 30, 2018 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating revenue |  | $ | 595 |  |  | $ | 1,637 |  |  | $ | — |  |  | $ | 2,232 |
Net income |  |  | 163 |  |  |  | 347 |  |  |  | 10 |  |  |  | 520 |
Nine Months Ended September 30, 2019 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating revenue |  | $ | 1,860 |  |  | $ | 4,336 |  |  | $ | (29 | ) |  | $ | 6,167 |
Net income (loss) |  |  | 494 |  |  |  | 885 |  |  |  | (657 | ) |  |  | 722 |
Nine Months Ended September 30, 2018 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating revenue |  | $ | 1,686 |  |  | $ | 4,338 |  |  | $ | (215 | ) |  | $ | 5,809 |
Net income (loss) |  |  | 462 |  |  |  | 796 |  |  |  | (215 | ) |  |  | 1,043 |
Dominion Energy Gas Holdings, LLC |
Segment Reporting Information [Line Items] |
Schedule of Segment Reporting Information, by Segment | The following table presents segment information pertaining to Dominion Energy Gas’ operations:
|  | Gas Infrastructure |  |  | Corporate and Other |  |  | Consolidated Total |
(millions) |  |  |  |  |  |  |  |  |  |  |  |
Three Months Ended September 30, 2019 |  |  |  |  |  |  |  |  |  |  |  |
Operating revenue |  | $ | 392 |  |  | $ | — |  |  | $ | 392 |
Net income (loss) |  |  | 100 |  |  |  | (8 | ) |  |  | 92 |
Three Months Ended September 30, 2018 |  |  |  |  |  |  |  |  |  |  |  |
Operating revenue |  | $ | 423 |  |  | $ | — |  |  | $ | 423 |
Net income (loss) |  |  | 146 |  |  |  | (10 | ) |  |  | 136 |
Nine Months Ended September 30, 2019 |  |  |  |  |  |  |  |  |  |  |  |
Operating revenue |  | $ | 1,314 |  |  | $ | (11 | ) |  | $ | 1,303 |
Net income (loss) |  |  | 316 |  |  |  | (61 | ) |  |  | 255 |
Nine Months Ended September 30, 2018 |  |  |  |  |  |  |  |  |  |  |  |
Operating revenue |  | $ | 1,408 |  |  | $ | — |  |  | $ | 1,408 |
Net income (loss) |  |  | 421 |  |  |  | (104 | ) |  |  | 317 |

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