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Variable Interest Entities	9 Months Ended
	Sep. 30, 2017
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Variable Interest Entities	Note 13. Variable Interest Entities There have been no significant changes regarding the entities the Companies consider VIEs as described in Note 15 to the Consolidated Financial Statements in the Companies' Annual Report on Form 10-K for the year ended December 31, 2016. Dominion Energy Dominion Energy’s securities due within one year and long-term debt include $29 million and $356 million, respectively, of debt issued in 2016 by SBL Holdco, a VIE, net of issuance costs that is nonrecourse to Dominion Energy and is secured by SBL Holdco’s interest in certain merchant solar facilities. Virginia Power Virginia Power had long-term power and capacity contracts with three non-utility generators. Contracts with two of these non-utility generators expired during the third quarter of 2017 leaving a remaining aggregate summer generation capacity of approximately 218 MW. Virginia Power is not subject to any risk of loss from this remaining potential VIE other than its remaining purchase commitments which totaled $213 million as of September 30, 2017. Virginia Power paid $17 million and $37 million for electric capacity and $5 million and $11 million for electric energy to these entities for the three months ended September 30, 2017 and 2016, respectively. Virginia Power paid $73 million and $111 million for electric capacity and $20 million and $23 million for electric energy to these entities for the nine months ended September 30, 2017 and 2016, respectively. Virginia Power and Dominion Energy Gas Virginia Power and Dominion Energy Gas purchased shared services from DES, an affiliated VIE, of $83 million and $31 million for the three months ended September 30, 2017, $80 million and $31 million for the three months ended September 30, 2016, $251 million and $93 million for the nine months ended September 30, 2017 and $268 million and $95 million for the nine months ended September 30, 2016, respectively.

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- Definition

The entire disclosure for a variable interest entity (VIE), including but not limited to, judgments and assumptions in determining whether to consolidate and in identifying the primary beneficiary, gain (loss) recognized on the initial consolidation of the VIE, terms of arrangements, amounts and classification of the VIE's assets and liabilities, and the entity's maximum exposure to loss.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-URI http://asc.fasb.org/topic&trid=2197479

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