Consolidated Statements of Income (Parenthetical) (Dominion Gas Holdings, LLC, Affiliated Entity, USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2014
Dominion Gas Holdings, LLC \| Affiliated Entity
Gain on sale of assets	$ 59

Amount of gain (loss) on sale or disposal of assets, including but not limited to property plant and equipment, intangible assets and equity in securities of subsidiaries or equity method investee.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 45

-Paragraph 5

-URI http://asc.fasb.org/extlink&oid=8077374&loc=d3e2443-110228

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