Asset Impairment Charges After Tax

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- Definition

Cost cap amount of capitalized costs recoverable.

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- Definition

Depreciation And Amortization After Tax

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No definition available.

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- Definition

Public utilities energy efficiency program cost exceed percentage.

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- Definition

Public utilities number of new demand response programs.

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- Definition

Public utilities, number of new energy efficiency programs.

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- Definition

Public utilities number of new programs bundles.

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- Definition

Public Utilities, Requested Rate, Amount

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No definition available.

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- Definition

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
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-Name Accounting Standards Codification
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-Section 45
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-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482130/360-10-45-4

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- Definition

The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482099/360-10-50-1

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- Definition

The increase (decrease) during the period in the costs deferred for rate-making purposes.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 980
-SubTopic 340
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481878/980-340-50-2

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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.

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No definition available.

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Regulatory Matters - Schedule of Additional Significant Riders Associated with Virginia Power Projects (Parenthetical) (Detail) $ in Millions	1 Months Ended						3 Months Ended		12 Months Ended
	Dec. 31, 2022 USD ($) Program	Jun. 30, 2022 USD ($)	May 31, 2022 USD ($)	Dec. 31, 2021 USD ($) Program	Oct. 31, 2021 USD ($)	Jun. 30, 2021 USD ($)	Sep. 30, 2022 USD ($)	Jun. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Public Utilities General Disclosures [Line Items]
Impairment of assets and other charges									$ 2,062	$ 194	$ 2,104
Depreciation, depletion and amortization									2,442	2,103	1,991
Virginia Electric and Power Company
Public Utilities General Disclosures [Line Items]
Depreciation, depletion and amortization									1,736	1,364	$ 1,252
Rider SNA \| Virginia Electric and Power Company
Public Utilities General Disclosures [Line Items]
Total revenue requirement									107
Rider T1 \| Virginia Electric and Power Company
Public Utilities General Disclosures [Line Items]
Total revenue requirement									706
Rider U \| Virginia Electric and Power Company
Public Utilities General Disclosures [Line Items]
Total revenue requirement									$ 95
Virginia Regulation \| Virginia Electric and Power Company
Public Utilities General Disclosures [Line Items]
Impairment of assets and other charges										$ 318
Depreciation, depletion and amortization							$ 33
Depreciation and amortization after tax							$ 25
Virginia Regulation \| Virginia Electric and Power Company \| Impairment of Assets and Other Charges (Benefits)
Public Utilities General Disclosures [Line Items]
Impairment of assets and other charges								$ 180
Impairment of assets and other charges after tax								$ 134
Virginia Regulation \| Rider SNA \| Virginia Electric and Power Company \| Operating Segments \| First Phase of Nuclear Life Extension Program
Public Utilities General Disclosures [Line Items]
Projected capital investment					$ 1,200
Virginia Regulation \| Rider T1 \| Virginia Electric and Power Company \| Operating Segments
Public Utilities General Disclosures [Line Items]
Total revenue requirement			$ 224
Virginia Regulation \| Rider T1 \| Virginia Electric and Power Company \| Operating Segments \| Transmission Component Of Virginia Powers
Public Utilities General Disclosures [Line Items]
Total revenue requirement			$ 482
Virginia Regulation \| Rider U \| Virginia Electric and Power Company \| Previous Phase
Public Utilities General Disclosures [Line Items]
Projected capital investment		$ 74				$ 60
Virginia Regulation \| Rider U \| Virginia Electric and Power Company \| Six Phase
Public Utilities General Disclosures [Line Items]
Projected capital investment						$ 35
Virginia Regulation \| Rider DSM \| Virginia Electric and Power Company
Public Utilities General Disclosures [Line Items]
Amount of cost cap recovery	$ 150			$ 140
Public utilities energy efficiency program cost exceed percentage	15.00%			15.00%
Virginia Regulation \| Rider DSM \| Virginia Electric and Power Company \| New Demand Response Program
Public Utilities General Disclosures [Line Items]
Number of new demand response programs \| Program	1
Virginia Regulation \| Rider DSM \| Virginia Electric and Power Company \| Operating Segments \| Energy Efficiency Program
Public Utilities General Disclosures [Line Items]
Number of new energy efficiency programs \| Program	4			9
Virginia Regulation \| Rider DSM \| Virginia Electric and Power Company \| Operating Segments \| New Program Bundles
Public Utilities General Disclosures [Line Items]
Number of new program bundles \| Program	4