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Related-Party Transactions (Detail) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018 | Dec. 31, 2018
Related Party Transaction [Line Items] |  |  |  |  |  |
Services provided to related parties |  | $ 60 | $ 39 | $ 127 | $ 85 |
Virginia Electric and Power Company |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Commodity purchases from affiliates |  | 119 | 139 | 391 | 537 |
Services provided by affiliates | [1] | 161 | 112 | 280 | 232 |
Virginia Electric and Power Company | Affiliated Entity |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Services provided to related parties |  | 8 | 5 | 14 | 11 |
Dominion Energy Gas Holdings, LLC |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Services provided by affiliates | [2] | 59 | 44 | 104 | 87 |
Services provided to related parties | [3] | 45 | $ 73 | 90 | $ 132 |
Other receivables | [4] | 10 |  | 10 |  | $ 13
Dominion Energy Gas Holdings, LLC | Affiliated Entity |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Imbalances receivable from affiliates |  | 5 |  | 5 |  | 16
Imbalances payable to affiliates | [5] | $ 1 |  | $ 1 |  | $ 4
[1] | Includes capitalized expenditures of $34 million and $38 million for the three months ended June 30, 2019 and 2018, respectively, and $67 million and $75 million for the six months ended June 30, 2019 and 2018, respectively.
[2] | Includes capitalized expenditures of $5 million and $6 million for the three months ended June 30, 2019 and 2018,respectively, and $11 million and $18 million for the six months ended June 30, 2019 and 2018, respectively.
[3] | Includes amounts attributable to Atlantic Coast Pipeline, a related-party VIE.
[4] | Represents amounts due from Atlantic Coast Pipeline, a related-party VIE.
[5] | Amounts are presented in other current liabilities in Dominion Energy Gas’ Consolidated Balance Sheets.

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