Business acquisition and dispositions line items.

No definition available.

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- Definition

Disposal group including discontinued operation decrease in cash consideration.

+ References

No definition available.

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- Definition

Disposal group, including discontinued operation, deposits.

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No definition available.

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- Definition

Nominal or face amount used to calculate payment on derivative.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5580258-113959

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5579245-113959

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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.

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Amount of currency on hand, demand deposits with banks or financial institutions, and other kinds of accounts that have the general characteristics of demand deposits, held by a disposal group.

+ References

No definition available.

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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.

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- Definition

Amount of divestiture of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267

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- Definition

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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No definition available.

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Acquisitions and Dispositions (Disposition of Gas Transmission & Storage Operations to BHE) (Narrative) (Detail) - USD ($) $ in Millions		9 Months Ended
	Nov. 30, 2020	Sep. 30, 2020	Nov. 01, 2020	Oct. 31, 2020	Jul. 31, 2020
Gas, Transmission & Storage \| Subsequent Event
Business Acquisition And Dispositions [Line Items]
Derivative payment				$ 165
Gas, Transmission & Storage \| BHE \| Dominion Energy Questar Pipeline
Business Acquisition And Dispositions [Line Items]
Goodwill write-off		$ 191
Q-Pipe Transaction \| BHE
Business Acquisition And Dispositions [Line Items]
Disposal group, expects to recognize pre-tax gain upon closing		$ 500
Dominion Energy Gas Holdings, LLC \| Gas, Transmission & Storage \| BHE
Business Acquisition And Dispositions [Line Items]
Disposal group, total value of consideration					$ 10,000
Disposal group, closing adjustments					$ 4,000
Percentage ownership in total units		50.00%
Dominion Energy Gas Holdings, LLC \| Gas, Transmission & Storage \| BHE \| Subsequent Event
Business Acquisition And Dispositions [Line Items]
Disposal group, total value of consideration	$ 2,700
Disposal group, closing adjustments	200
Disposal group, expects to recognize pre-tax gain upon closing	200
Goodwill write-off	$ 1,400
Dominion Energy Gas Holdings, LLC \| Gas, Transmission & Storage \| BHE \| Subsequent Event \| Dominion Energy Questar Pipeline
Business Acquisition And Dispositions [Line Items]
Disposal group, cash consideration				$ 1,300
Dominion Energy Gas Holdings, LLC \| Gas, Transmission & Storage \| BHE \| General Partner Interest
Business Acquisition And Dispositions [Line Items]
Percentage ownership in total units					100.00%
Dominion Energy Gas Holdings, LLC \| Gas, Transmission & Storage \| BHE \| Limited Partner Interests
Business Acquisition And Dispositions [Line Items]
Percentage ownership in total units					25.00%
Dominion Energy Gas Holdings, LLC \| Q-Pipe Transaction \| BHE \| Subsequent Event \| Dominion Energy Questar Pipeline
Business Acquisition And Dispositions [Line Items]
Disposal group, including discontinued operation, deposits			$ 1,300