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Derivatives and Hedge Accounting Activities (Volume of Derivative Activity) (Parenthetical) (Detail) - Foreign currency | Dec. 31, 2017 EUR (€)
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Derivative [Line Items] |
Interest rate / Foreign currency (US Dollars, Euros) | € 250,000,000
Dominion Energy Gas Holdings, LLC |
Derivative [Line Items] |
Interest rate / Foreign currency (US Dollars, Euros) | € 250,000,000

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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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- 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
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- Details
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- Details
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