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Related-Party Transactions (Detail) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2019 | Mar. 31, 2018 | Dec. 31, 2018
Virginia Electric and Power Company |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Commodity purchases from affiliates |  | $ 272 | $ 398 |
Services provided by affiliates | [1] | 119 | 120 |
Virginia Electric and Power Company | Affiliated Entity |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Services provided to related parties |  | 6 | 6 |
Dominion Energy Gas Holdings, LLC |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Services provided by affiliates | [2] | 45 | 44 |
Services provided to related parties | [3] | 45 | 59 |
Other receivables | [4] | 12 |  | $ 13
Dominion Energy Gas Holdings, LLC | Affiliated Entity |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Services provided to related parties | [4] | 67 | $ 46 |
Imbalances receivable from affiliates |  | 1 |  | 16
Imbalances payable to affiliates | [5] | $ 1 |  | $ 4
[1] | Includes capitalized expenditures of $33 million and $37 million for the three months ended March 31, 2019 and 2018, respectively.
[2] | Includes capitalized expenditures of $6 million and $12 million for the three months ended March 31, 2019 and 2018, respectively.
[3] | Amounts primarily 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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