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Operating Revenue (Tables) | 6 Months Ended
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Jun. 30, 2017
Regulated And Unregulated Operating Revenue [Abstract] |
Operating Revenue | The Companies’ operating revenue consists of the following:
|  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
|  | 2017 |  |  | 2016 |  |  | 2017 |  |  | 2016 |
(millions) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dominion Energy |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Electric sales: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulated |  | $ | 1,716 |  |  | $ | 1,718 |  |  | $ | 3,482 |  |  | $ | 3,560 |
Nonregulated |  |  | 307 |  |  |  | 335 |  |  |  | 734 |  |  |  | 724 |
Gas sales: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulated |  |  | 151 |  |  |  | 26 |  |  |  | 599 |  |  |  | 91 |
Nonregulated |  |  | 110 |  |  |  | 54 |  |  |  | 254 |  |  |  | 172 |
Gas transportation and storage |  |  | 430 |  |  |  | 369 |  |  |  | 922 |  |  |  | 784 |
Other |  |  | 99 |  |  |  | 96 |  |  |  | 206 |  |  |  | 188 |
Total operating revenue |  | $ | 2,813 |  |  | $ | 2,598 |  |  | $ | 6,197 |  |  | $ | 5,519 |
Virginia Power |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulated electric sales |  | $ | 1,716 |  |  | $ | 1,718 |  |  | $ | 3,482 |  |  | $ | 3,560 |
Other |  |  | 31 |  |  |  | 58 |  |  |  | 96 |  |  |  | 106 |
Total operating revenue |  | $ | 1,747 |  |  | $ | 1,776 |  |  | $ | 3,578 |  |  | $ | 3,666 |
Dominion Energy Gas |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gas sales: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulated |  | $ | 15 |  |  | $ | 12 |  |  | $ | 47 |  |  | $ | 41 |
Nonregulated |  |  | 8 |  |  |  | 6 |  |  |  | 10 |  |  |  | 7 |
Gas transportation and storage |  |  | 342 |  |  |  | 301 |  |  |  | 738 |  |  |  | 652 |
Other |  |  | 57 |  |  |  | 49 |  |  |  | 117 |  |  |  | 99 |
Total operating revenue |  | $ | 422 |  |  | $ | 368 |  |  | $ | 912 |  |  | $ | 799 |

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- Definition This element contains information about the components of the entity's operating revenue. + References No definition available. + Details
Name: | d_OperatingRevenueTableTextBlock
Namespace Prefix: | d_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_RegulatedAndUnregulatedOperatingRevenueAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration