XML 83 R62.htm IDEA: XBRL DOCUMENT
v3.7.0.1

Derivatives and Hedge Accounting Activities (Fair Value of Derivatives) (Details) - USD ($) $ in Millions | Jun. 30, 2017 | Dec. 31, 2016
--- | --- | ---
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset |  | $ 281 | [1] | $ 279 | [2]
Derivative Liabilities |  | 150 | [3] | 155 | [4]
Virginia Electric and Power Company |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset | [2] | 167 |  | 194 |
Derivative Liabilities | [4] | 74 |  | 31 |
Dominion Energy Gas Holdings, LLC |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset |  | 17 |  |  |
Derivative Liabilities |  | 5 |  | 11 |
Current Assets |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset |  | 142 | [5] | 140 | [6]
Current Assets | Virginia Electric and Power Company |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset | [6] | 55 |  | 66 |
Current Assets | Dominion Energy Gas Holdings, LLC |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset | [7] | 2 |  |  |
Current Assets | Interest rate |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset |  | 5 |  | 10 |
Current Assets | Interest rate | Virginia Electric and Power Company |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset |  |  |  | 6 |
Current Assets | Commodity contracts |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset |  | 137 |  | 130 |
Current Assets | Commodity contracts | Virginia Electric and Power Company |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset |  | 55 |  | 60 |
Current Assets | Commodity contracts | Dominion Energy Gas Holdings, LLC |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset |  | 2 |  |  |
Noncurrent Assets |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset |  | 139 |  | 139 |
Noncurrent Assets | Virginia Electric and Power Company |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset |  | 112 |  | 128 |
Noncurrent Assets | Dominion Energy Gas Holdings, LLC |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset | [8] | 15 |  |  |
Noncurrent Assets | Interest rate |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset |  | 9 |  | 7 |
Noncurrent Assets | Foreign currency |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset |  | 15 |  |  |
Noncurrent Assets | Foreign currency | Dominion Energy Gas Holdings, LLC |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset |  | 15 |  |  |
Noncurrent Assets | Commodity contracts |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset |  | 115 |  | 132 |
Noncurrent Assets | Commodity contracts | Virginia Electric and Power Company |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset |  | 112 |  | 128 |
Current Liabilities |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities |  | 104 | [9] | 128 | [10]
Current Liabilities | Virginia Electric and Power Company |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities | [10] | 41 |  | 18 |
Current Liabilities | Dominion Energy Gas Holdings, LLC |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities | [7] | 5 |  | 7 |
Current Liabilities | Interest rate |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities |  | 40 |  | 33 |
Current Liabilities | Interest rate | Virginia Electric and Power Company |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities |  | 31 |  | 8 |
Current Liabilities | Foreign currency |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities |  | 5 |  | 3 |
Current Liabilities | Foreign currency | Dominion Energy Gas Holdings, LLC |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities |  | 5 |  | 3 |
Current Liabilities | Commodity contracts |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities |  | 59 |  | 92 |
Current Liabilities | Commodity contracts | Virginia Electric and Power Company |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities |  | 10 |  | 10 |
Current Liabilities | Commodity contracts | Dominion Energy Gas Holdings, LLC |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities |  |  |  | 4 |
Noncurrent Liabilities |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities |  | 46 |  | 27 |
Noncurrent Liabilities | Virginia Electric and Power Company |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities |  | 33 |  | 13 |
Noncurrent Liabilities | Dominion Energy Gas Holdings, LLC |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities | [8] |  |  | 4 |
Noncurrent Liabilities | Interest rate |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities |  | 44 |  | 20 |
Noncurrent Liabilities | Interest rate | Virginia Electric and Power Company |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities |  | 33 |  | 13 |
Noncurrent Liabilities | Foreign currency |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities |  |  |  | 3 |
Noncurrent Liabilities | Foreign currency | Dominion Energy Gas Holdings, LLC |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities |  |  |  | 3 |
Noncurrent Liabilities | Commodity contracts |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities |  | 2 |  | 4 |
Noncurrent Liabilities | Commodity contracts | Dominion Energy Gas Holdings, LLC |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities |  |  |  | 1 |
Fair Value – Derivatives under Hedge Accounting |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset |  | 71 | [1] | 46 | [2]
Derivative Liabilities |  | 103 | [3] | 111 | [4]
Fair Value – Derivatives under Hedge Accounting | Virginia Electric and Power Company |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset | [2] | 0 |  | 6 |
Derivative Liabilities | [4] | 64 |  | 21 |
Fair Value – Derivatives under Hedge Accounting | Dominion Energy Gas Holdings, LLC |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset |  | 17 |  |  |
Derivative Liabilities |  | 5 |  | 11 |
Fair Value – Derivatives under Hedge Accounting | Current Assets |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset |  | 47 | [5] | 39 | [6]
Fair Value – Derivatives under Hedge Accounting | Current Assets | Virginia Electric and Power Company |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset | [6] | 0 |  | 6 |
Fair Value – Derivatives under Hedge Accounting | Current Assets | Dominion Energy Gas Holdings, LLC |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset | [7] | 2 |  |  |
Fair Value – Derivatives under Hedge Accounting | Current Assets | Interest rate |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset |  | 5 |  | 10 |
Fair Value – Derivatives under Hedge Accounting | Current Assets | Interest rate | Virginia Electric and Power Company |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset |  |  |  | 6 |
Fair Value – Derivatives under Hedge Accounting | Current Assets | Commodity contracts |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset |  | 42 |  | 29 |
Fair Value – Derivatives under Hedge Accounting | Current Assets | Commodity contracts | Virginia Electric and Power Company |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset |  | 0 |  | 0 |
Fair Value – Derivatives under Hedge Accounting | Current Assets | Commodity contracts | Dominion Energy Gas Holdings, LLC |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset |  | 2 |  |  |
Fair Value – Derivatives under Hedge Accounting | Noncurrent Assets |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset |  | 24 |  | 7 |
Fair Value – Derivatives under Hedge Accounting | Noncurrent Assets | Virginia Electric and Power Company |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset |  | 0 |  | 0 |
Fair Value – Derivatives under Hedge Accounting | Noncurrent Assets | Dominion Energy Gas Holdings, LLC |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset | [8] | 15 |  |  |
Fair Value – Derivatives under Hedge Accounting | Noncurrent Assets | Interest rate |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset |  | 9 |  | 7 |
Fair Value – Derivatives under Hedge Accounting | Noncurrent Assets | Foreign currency |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset |  | 15 |  |  |
Fair Value – Derivatives under Hedge Accounting | Noncurrent Assets | Foreign currency | Dominion Energy Gas Holdings, LLC |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset |  | 15 |  |  |
Fair Value – Derivatives under Hedge Accounting | Noncurrent Assets | Commodity contracts |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset |  | 0 |  | 0 |
Fair Value – Derivatives under Hedge Accounting | Noncurrent Assets | Commodity contracts | Virginia Electric and Power Company |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset |  | 0 |  | 0 |
Fair Value – Derivatives under Hedge Accounting | Current Liabilities |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities |  | 59 | [9] | 87 | [10]
Fair Value – Derivatives under Hedge Accounting | Current Liabilities | Virginia Electric and Power Company |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities | [10] | 31 |  | 8 |
Fair Value – Derivatives under Hedge Accounting | Current Liabilities | Dominion Energy Gas Holdings, LLC |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities | [7] | 5 |  | 7 |
Fair Value – Derivatives under Hedge Accounting | Current Liabilities | Interest rate |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities |  | 40 |  | 33 |
Fair Value – Derivatives under Hedge Accounting | Current Liabilities | Interest rate | Virginia Electric and Power Company |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities |  | 31 |  | 8 |
Fair Value – Derivatives under Hedge Accounting | Current Liabilities | Foreign currency |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities |  | 5 |  | 3 |
Fair Value – Derivatives under Hedge Accounting | Current Liabilities | Foreign currency | Dominion Energy Gas Holdings, LLC |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities |  | 5 |  | 3 |
Fair Value – Derivatives under Hedge Accounting | Current Liabilities | Commodity contracts |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities |  | 14 |  | 51 |
Fair Value – Derivatives under Hedge Accounting | Current Liabilities | Commodity contracts | Virginia Electric and Power Company |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities |  | 0 |  | 0 |
Fair Value – Derivatives under Hedge Accounting | Current Liabilities | Commodity contracts | Dominion Energy Gas Holdings, LLC |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities |  |  |  | 4 |
Fair Value – Derivatives under Hedge Accounting | Noncurrent Liabilities |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities |  | 44 |  | 24 |
Fair Value – Derivatives under Hedge Accounting | Noncurrent Liabilities | Virginia Electric and Power Company |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities |  | 33 |  | 13 |
Fair Value – Derivatives under Hedge Accounting | Noncurrent Liabilities | Dominion Energy Gas Holdings, LLC |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities | [8] |  |  | 4 |
Fair Value – Derivatives under Hedge Accounting | Noncurrent Liabilities | Interest rate |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities |  | 44 |  | 20 |
Fair Value – Derivatives under Hedge Accounting | Noncurrent Liabilities | Interest rate | Virginia Electric and Power Company |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities |  | 33 |  | 13 |
Fair Value – Derivatives under Hedge Accounting | Noncurrent Liabilities | Foreign currency |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities |  |  |  | 3 |
Fair Value – Derivatives under Hedge Accounting | Noncurrent Liabilities | Foreign currency | Dominion Energy Gas Holdings, LLC |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities |  |  |  | 3 |
Fair Value – Derivatives under Hedge Accounting | Noncurrent Liabilities | Commodity contracts |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities |  | 0 |  | 1 |
Fair Value – Derivatives under Hedge Accounting | Noncurrent Liabilities | Commodity contracts | Dominion Energy Gas Holdings, LLC |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities |  |  |  | 1 |
Fair Value – Derivatives not under Hedge Accounting |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset |  | 210 | [1] | 233 | [2]
Derivative Liabilities |  | 47 | [3] | 44 | [4]
Fair Value – Derivatives not under Hedge Accounting | Virginia Electric and Power Company |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset | [2] | 167 |  | 188 |
Derivative Liabilities | [4] | 10 |  | 10 |
Fair Value – Derivatives not under Hedge Accounting | Dominion Energy Gas Holdings, LLC |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset |  | 0 |  |  |
Derivative Liabilities |  | 0 |  | 0 |
Fair Value – Derivatives not under Hedge Accounting | Current Assets |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset |  | 95 | [5] | 101 | [6]
Fair Value – Derivatives not under Hedge Accounting | Current Assets | Virginia Electric and Power Company |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset | [6] | 55 |  | 60 |
Fair Value – Derivatives not under Hedge Accounting | Current Assets | Dominion Energy Gas Holdings, LLC |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset | [7] | 0 |  |  |
Fair Value – Derivatives not under Hedge Accounting | Current Assets | Interest rate |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset |  | 0 |  | 0 |
Fair Value – Derivatives not under Hedge Accounting | Current Assets | Interest rate | Virginia Electric and Power Company |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset |  |  |  | 0 |
Fair Value – Derivatives not under Hedge Accounting | Current Assets | Commodity contracts |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset |  | 95 |  | 101 |
Fair Value – Derivatives not under Hedge Accounting | Current Assets | Commodity contracts | Virginia Electric and Power Company |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset |  | 55 |  | 60 |
Fair Value – Derivatives not under Hedge Accounting | Current Assets | Commodity contracts | Dominion Energy Gas Holdings, LLC |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset |  | 0 |  |  |
Fair Value – Derivatives not under Hedge Accounting | Noncurrent Assets |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset |  | 115 |  | 132 |
Fair Value – Derivatives not under Hedge Accounting | Noncurrent Assets | Virginia Electric and Power Company |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset |  | 112 |  | 128 |
Fair Value – Derivatives not under Hedge Accounting | Noncurrent Assets | Dominion Energy Gas Holdings, LLC |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset | [8] | 0 |  |  |
Fair Value – Derivatives not under Hedge Accounting | Noncurrent Assets | Interest rate |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset |  | 0 |  | 0 |
Fair Value – Derivatives not under Hedge Accounting | Noncurrent Assets | Foreign currency |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset |  | 0 |  |  |
Fair Value – Derivatives not under Hedge Accounting | Noncurrent Assets | Foreign currency | Dominion Energy Gas Holdings, LLC |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset |  | 0 |  |  |
Fair Value – Derivatives not under Hedge Accounting | Noncurrent Assets | Commodity contracts |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset |  | 115 |  | 132 |
Fair Value – Derivatives not under Hedge Accounting | Noncurrent Assets | Commodity contracts | Virginia Electric and Power Company |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Asset |  | 112 |  | 128 |
Fair Value – Derivatives not under Hedge Accounting | Current Liabilities |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities |  | 45 | [9] | 41 | [10]
Fair Value – Derivatives not under Hedge Accounting | Current Liabilities | Virginia Electric and Power Company |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities | [10] | 10 |  | 10 |
Fair Value – Derivatives not under Hedge Accounting | Current Liabilities | Dominion Energy Gas Holdings, LLC |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities | [7] | 0 |  | 0 |
Fair Value – Derivatives not under Hedge Accounting | Current Liabilities | Interest rate |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities |  | 0 |  | 0 |
Fair Value – Derivatives not under Hedge Accounting | Current Liabilities | Interest rate | Virginia Electric and Power Company |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities |  | 0 |  | 0 |
Fair Value – Derivatives not under Hedge Accounting | Current Liabilities | Foreign currency |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities |  | 0 |  | 0 |
Fair Value – Derivatives not under Hedge Accounting | Current Liabilities | Foreign currency | Dominion Energy Gas Holdings, LLC |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities |  | 0 |  | 0 |
Fair Value – Derivatives not under Hedge Accounting | Current Liabilities | Commodity contracts |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities |  | 45 |  | 41 |
Fair Value – Derivatives not under Hedge Accounting | Current Liabilities | Commodity contracts | Virginia Electric and Power Company |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities |  | 10 |  | 10 |
Fair Value – Derivatives not under Hedge Accounting | Current Liabilities | Commodity contracts | Dominion Energy Gas Holdings, LLC |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities |  |  |  | 0 |
Fair Value – Derivatives not under Hedge Accounting | Noncurrent Liabilities |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities |  | 2 |  | 3 |
Fair Value – Derivatives not under Hedge Accounting | Noncurrent Liabilities | Virginia Electric and Power Company |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities |  | 0 |  | 0 |
Fair Value – Derivatives not under Hedge Accounting | Noncurrent Liabilities | Dominion Energy Gas Holdings, LLC |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities | [8] |  |  | 0 |
Fair Value – Derivatives not under Hedge Accounting | Noncurrent Liabilities | Interest rate |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities |  | 0 |  | 0 |
Fair Value – Derivatives not under Hedge Accounting | Noncurrent Liabilities | Interest rate | Virginia Electric and Power Company |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities |  | 0 |  | 0 |
Fair Value – Derivatives not under Hedge Accounting | Noncurrent Liabilities | Foreign currency |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities |  |  |  | 0 |
Fair Value – Derivatives not under Hedge Accounting | Noncurrent Liabilities | Foreign currency | Dominion Energy Gas Holdings, LLC |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities |  |  |  | 0 |
Fair Value – Derivatives not under Hedge Accounting | Noncurrent Liabilities | Commodity contracts |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities |  | $ 2 |  | 3 |
Fair Value – Derivatives not under Hedge Accounting | Noncurrent Liabilities | Commodity contracts | Dominion Energy Gas Holdings, LLC |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities |  |  |  | $ 0 |
[1] | Noncurrent derivative assets are presented in other deferred charges and other assets in Dominion Energy’s Consolidated Balance Sheets.
[2] | Noncurrent derivative assets are presented in other deferred charges and other assets in Virginia Power's Consolidated Balance Sheets.
[3] | Noncurrent derivative liabilities are presented in other deferred credits and other liabilities in Dominion Energy’s Consolidated Balance Sheets.
[4] | Noncurrent derivative liabilities are presented in other deferred credits and other liabilities in Virginia Power’s Consolidated Balance Sheets.
[5] | Current derivative assets are presented in other current assets in Dominion Energy’s Consolidated Balance Sheets.
[6] | Current derivative assets are presented in other current assets in Virginia Power's Consolidated Balance Sheets.
[7] | Current derivative assets are presented in other current assets in Dominion Energy Gas’ Consolidated Balance Sheets. Noncurrent derivatives assets are presented in other deferred charges and other assets in Dominion Energy Gas’ Consolidated Balance Sheets. Current derivative liabilities are presented in other current liabilities in Dominion Energy Gas' Consolidated Balance Sheets.
[8] | Noncurrent derivative liabilities are presented in other deferred credits and other liabilities in Dominion Energy Gas’ Consolidated Balance Sheets.
[9] | Current derivative liabilities are presented in other current liabilities in Dominion Energy's Consolidated Balance Sheets.
[10] | Current derivative liabilities are presented in other current liabilities in Virginia Power's Consolidated Balance Sheets.

X
- Definition Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41271-113958 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13433-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13495-108611 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=82849420&loc=SL20226008-175313 + Details
Name: | us-gaap_DerivativeAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=82849420&loc=SL20226008-175313 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13495-108611 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13433-108611 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41271-113958 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 + Details
Name: | us-gaap_DerivativeLiabilities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DerivativesFairValueLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | dei_LegalEntityAxis=d_VirginiaElectricAndPowerCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=d_DominionEnergyGasHoldingsLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_OtherCurrentAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_InterestRateContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_CommodityContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_OtherNoncurrentAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_ForeignExchangeContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_OtherCurrentLiabilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_OtherNoncurrentLiabilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_HedgingDesignationAxis=us-gaap_DesignatedAsHedgingInstrumentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_HedgingDesignationAxis=us-gaap_NondesignatedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |