Gain (loss) on disposition of property plant and equipment, net of tax.

No definition available.

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- Definition

Gas and Oil Area, Developed, Net, Interest Conveyed, Percentage

+ References

No definition available.

+ Details

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- Definition

Oil and gas property, number of natural gas storage fields.

+ References

No definition available.

+ Details

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- Definition

The excess amount received or due over net assets in a transaction accounted for as a divestiture where a subsidiary, business or operating assets are "sold" by the entity to a newly formed, thinly capitalized, highly leveraged buyer. This gain is not yet recognized and is disclosed on the balance sheet as an offset against the carrying amount of the securities received.

+ References

No definition available.

+ Details

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- Definition

Amount of consideration received or receivable for the disposal of assets and liabilities, including discontinued operation.

+ References

No definition available.

+ Details

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- Definition

Amount before tax of gain (loss) recognized on the sale or disposal of a disposal group. Excludes discontinued operations.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=109226348&loc=d3e2443-110228

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=109226691&loc=d3e2941-110230

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- Definition

Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585

+ Details

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- Definition

Fractional interest owned based on working interests or other economic arrangements of area spaced or assigned to productive wells.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher SEC
-Name Regulation S-K (SK)
-Number 229
-Section 1208
-Paragraph (a)

+ Details

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- Definition

The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3179-108585

+ 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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Property Plant and Equipment (Narrative) (Detail) $ in Millions	1 Months Ended				3 Months Ended		6 Months Ended
	Jun. 30, 2018 USD ($) a field	Mar. 31, 2018 USD ($) a field	Feb. 28, 2018 USD ($)	Jan. 31, 2018 a	Jun. 30, 2018 USD ($) a field	Jun. 30, 2017 USD ($)	Jun. 30, 2018 USD ($) a field	Jun. 30, 2017 USD ($)	Nov. 30, 2014 a field
Virginia Electric and Power Company \| Assignment of Tower Rental Portfolio \| Disposal Group, Disposed of by Sale, Not Discontinued Operations
Property Plant And Equipment [Line Items]
Amount of consideration	$ 91				$ 91		$ 91
Amount recognized in operating revenue and other income from sale					1	$ 1	3	$ 8
Amount to be recognized in other income ratably through 2023	32				32		32
Dominion Energy Gas Holdings, LLC \| Marcellus Shale \| Oil and Gas Properties
Property Plant And Equipment [Line Items]
Amount of consideration	$ 6		$ 28		$ 6		$ 6
Development rights (number of acres) \| a	9,000			18,000	9,000		9,000		24,000
Number of natural gas storage fields \| field	1				1		1		1
Gas and oil area developed net remaining interest conveyed percentage				50.00%
Dominion Energy Gas Holdings, LLC \| Marcellus Shale \| Oil and Gas Properties \| Other operations and maintenance
Property Plant And Equipment [Line Items]
Gain from sale	$ 6		28
After tax gain on sale	$ 4		$ 20
Dominion Energy Gas Holdings, LLC \| Utica and Point Pleasant Shale \| Oil and Gas Properties
Property Plant And Equipment [Line Items]
Amount of consideration		$ 16
Development rights (number of acres) \| a		11,000
Number of natural gas storage fields \| field		1
Proceeds from assignment of Shale Development Rights		$ 16
Dominion Energy Gas Holdings, LLC \| Utica and Point Pleasant Shale \| Oil and Gas Properties \| Other operations and maintenance
Property Plant And Equipment [Line Items]
Gain from sale		16
After tax gain on sale		$ 12