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Related-Party Transactions (Detail) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018 | Dec. 31, 2018
Virginia Electric and Power Company |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Commodity purchases from affiliates |  | $ 170 | $ 196 | $ 561 | $ 733 |
Services provided by affiliates | [1] | 107 | 106 | 387 | 338 |
Virginia Electric and Power Company | Affiliated Entity |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Services provided to related parties |  | 5 | 6 | 19 | 17 |
Dominion Energy Gas Holdings, LLC |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Services provided by affiliates | [2] | 41 | 40 | 145 | 128 |
Services provided to related parties | [3] | 38 | 65 | 128 | 197 |
Other receivables | [4] | 9 |  | 9 |  | $ 13
Dominion Energy Gas Holdings, LLC | Affiliated Entity |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Services provided to related parties |  | 60 | $ 39 | 187 | $ 124 |
Imbalances receivable from affiliates |  | 7 |  | 7 |  | 16
Imbalances payable to affiliates | [5] | $ 1 |  | $ 1 |  | $ 4
[1] | Includes capitalized expenditures of $33 million and $34 million for the three months ended September 30, 2019 and 2018, respectively, and $100 million and $109 million for the nine months ended September 30, 2019 and 2018, respectively.
[2] | Includes capitalized expenditures of $9 million for both the three months ended September 30, 2019 and 2018 and $20 million and $27 million for the nine months ended September 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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