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Related-Party Transactions (Tables) | 6 Months Ended
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Jun. 30, 2018
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, |
|  | 2018 |  |  | 2017 |  |  | 2018 |  |  | 2017 |
(millions) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commodity purchases from affiliates |  | $ | 139 |  |  | $ | 137 |  |  | $ | 537 |  |  | $ | 349 |
Services provided by affiliates(1) |  |  | 112 |  |  |  | 112 |  |  |  | 232 |  |  |  | 224 |
Services provided to affiliates |  |  | 5 |  |  |  | 7 |  |  |  | 11 |  |  |  | 12 |
(1) | Includes capitalized expenditures of $38 million and $37 million for the three months ended June 30, 2018 and 2017, respectively, and $75 million and $71 million for the six months ended June 30, 2018 and 2017, respectively.
Dominion Energy Gas Holdings, LLC |
Related Party Transaction [Line Items] |
Schedule of Related Party Transactions | Management believes the assumptions and methodologies underlying the allocation of general corporate overhead expenses are reasonable.
|  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
|  | 2018 |  |  | 2017 |  |  | 2018 |  |  | 2017 |
(millions) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sales of natural gas and transportation and storage services to affiliates |  | $ | 16 |  |  | $ | 18 |  |  | $ | 34 |  |  | $ | 36 |
Purchases of natural gas from affiliates |  |  | (2 | ) |  |  | 1 |  |  |  | 1 |  |  |  | — |
Services provided by related parties(1) |  |  | 33 |  |  |  | 36 |  |  |  | 66 |  |  |  | 73 |
Services provided to related parties(2) |  |  | 61 |  |  |  | 36 |  |  |  | 113 |  |  |  | 75 |
(1) | Includes capitalized expenditures of $7 million and $12 million for the three months ended June 30, 2018 and 2017, respectively, and $17 million and $20 million for the six months ended June 30, 2018 and 2017, respectively.
(2) | Amounts primarily attributable to Atlantic Coast Pipeline, a related-party VIE.
The following table presents affiliated and related party balances reflected in Dominion Energy Gas’ Consolidated Balance Sheets:
|  | June 30, 2018 |  |  | December 31, 2017 |
(millions) |  |  |  |  |  |  |  |
Other receivables(1) |  | $ | 19 |  |  | $ | 12 |
Customer receivables from related parties |  |  | — |  |  |  | 1 |
Imbalances receivable from affiliates |  |  | — |  |  |  | 1 |
Imbalances payable to affiliates(2) |  |  | 5 |  |  |  | — |
Affiliated notes receivable(3) |  |  | 18 |  |  |  | 20 |
(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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