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Related-Party Transactions (Tables) | 6 Months Ended
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Jun. 30, 2017
Virginia Electric and Power Company |
Related Party Transaction [Line Items] |
Schedule of Related Party Transactions | Presented below are Virginia Power's significant transactions with DES and other affiliates:
|  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
|  | 2017 |  |  | 2016 |  |  | 2017 |  |  | 2016 |
(millions) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commodity purchases from affiliates |  | $ | 137 |  |  | $ | 99 |  |  | $ | 349 |  |  | $ | 244 |
Services provided by affiliates(1) |  |  | 112 |  |  |  | 102 |  |  |  | 224 |  |  |  | 242 |
Services provided to affiliates |  |  | 7 |  |  |  | 7 |  |  |  | 12 |  |  |  | 12 |
(1) | Includes capitalized expenditures of $37 million and $38 million for the three months ended June 30, 2017 and 2016, respectively, and $71 million and $77 million for the six months ended June 30, 2017 and 2016, respectively.
Dominion Energy Gas Holdings, LLC |
Related Party Transaction [Line Items] |
Schedule of Related Party Transactions | The financial statements for all years presented include costs for certain general, administrative and corporate expenses assigned by DES to Dominion Energy Gas on the basis of direct and allocated methods in accordance with Dominion Energy Gas’ services agreements with DES. Where costs incurred cannot be determined by specific identification, the costs are allocated based on the proportional level of effort devoted by DES resources that is attributable to the entity, determined by reference to number of employees, salaries and wages and other similar measures for the relevant DES service. Management believes the assumptions and methodologies underlying the allocation of general corporate overhead expenses are reasonable. The costs of these services follow:
|  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
|  | 2017 |  |  | 2016 |  |  | 2017 |  |  | 2016 |
(millions) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchases of natural gas and transportation and storage services from affiliates |  | $ | 2 |  |  | $ | 2 |  |  | $ | 2 |  |  | $ | 5 |
Sales of natural gas and transportation and storage services to affiliates |  |  | 18 |  |  |  | 18 |  |  |  | 36 |  |  |  | 35 |
Services provided by related parties(1) |  |  | 35 |  |  |  | 33 |  |  |  | 70 |  |  |  | 72 |
Services provided to related parties(2) |  |  | 36 |  |  |  | 33 |  |  |  | 75 |  |  |  | 60 |
(1) | Includes capitalized expenditures of $12 million and $14 million for the three months ended June 30, 2017 and 2016, respectively, and $20 million and $24 million for the six months ended June 30, 2017 and 2016, respectively.
(2) | Amounts primarily attributable to Atlantic Coast Pipeline, a related-party VIE.
The following table presents affiliated and related-party activity reflected in Dominion Energy Gas' Consolidated Balance Sheets:
|  | June 30, 2017 |  |  | December 31, 2016 |
(millions) |  |  |  |  |  |  |  |
Other receivables(1) |  | $ | 15 |  |  | $ | 10 |
Imbalances receivable from affiliates |  |  | 1 |  |  |  | 2 |
Imbalances payable to affiliates(2) |  |  | 1 |  |  |  | 4 |
Affiliated notes receivable(3) |  |  | 20 |  |  |  | 18 |
(1) | Represents amounts due from Atlantic Coast Pipeline, a related-party VIE.
(2) | Amounts are presented in other current liabilities in Dominion Energy Gas' Consolidated Balance Sheets.
(3) | Amounts are presented in other deferred charges and other assets in Dominion Energy Gas' Consolidated Balance Sheets.

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- Definition Tabular disclosure of related party transactions. Examples of related party transactions include, but are not limited to, transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners and (d) affiliates. + References No definition available. + Details
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