Application date of public utilities transmission.

No definition available.

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- Definition

Asset impairment charge (benefit).

+ References

No definition available.

+ Details

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- Definition

Asset impairment charge (benefit), after tax.

+ References

No definition available.

+ Details

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- Definition

Increase decrease in annual base fuel component recoveries.

+ References

No definition available.

+ Details

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- Definition

Increase Decrease In Customer Usage Tracker

+ References

No definition available.

+ Details

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- Definition

Increase in proposed base rate percentage.

+ References

No definition available.

+ Details

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- Definition

Kilo Volt Line.

+ References

No definition available.

+ Details

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- Definition

Number of utility-scale projects to be operated.

+ References

No definition available.

+ Details

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- Definition

One-time credits to customers.

+ References

No definition available.

+ Details

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- Definition

Percentage to maintain common equity capitalization ratio.

+ References

No definition available.

+ Details

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- Definition

Power generation, targeted capacity provided by legislation.

+ References

No definition available.

+ Details

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- Definition

Proposed increase (decrease) in annual base fuel component recoveries.

+ References

No definition available.

+ Details

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Namespace Prefix:	d_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Public energy efficiency programs cost rate adjustment approval request to recover amount.

+ References

No definition available.

+ Details

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Namespace Prefix:	d_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Public utilities actual earned return on equity percentage.

+ References

No definition available.

+ Details

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Namespace Prefix:	d_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Public utilities authorized return on equity percentage.

+ References

No definition available.

+ Details

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Namespace Prefix:	d_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Public utilities event costs to be recovered.

+ References

No definition available.

+ Details

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Namespace Prefix:	d_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Public utilities, length of transmission line.

+ References

No definition available.

+ Details

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Namespace Prefix:	d_
Data Type:	dtr-types:lengthItemType
Balance Type:	na
Period Type:	duration

- Definition

Public utilities operating expense estimated fuel expenses over recovered balance.

+ References

No definition available.

+ Details

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Namespace Prefix:	d_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Public utilities operating expense estimated fuel expenses under recovered balance.

+ References

No definition available.

+ Details

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Namespace Prefix:	d_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- Definition

Public utilities, property, plant and equipment, expected cost of construction.

+ References

No definition available.

+ Details

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Namespace Prefix:	d_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Public utilities property plant and equipment requested cost of construction.

+ References

No definition available.

+ Details

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Namespace Prefix:	d_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Public Utilities Proposed Earned Return On Equity Percentage

+ References

No definition available.

+ Details

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- Definition

Public Utilities, Requested Rate, Amount

+ References

No definition available.

+ Details

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Namespace Prefix:	d_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Public utilities, start date of proposed rate in month and year.

+ References

No definition available.

+ Details

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Namespace Prefix:	d_
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- Definition

Public utilities, storm damage increase (decrease), amount.

+ References

No definition available.

+ Details

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Namespace Prefix:	d_
Data Type:	xbrli:monetaryItemType
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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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- Definition

Amount of public utility's interim rate increase (decrease) allowed while waiting final decision of regulatory agency.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Amount of public utility's requested rate increase (decrease) with regulatory agency.

+ References

No definition available.

+ Details

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Regulatory Matters (Narrative) (Detail) $ in Millions	1 Months Ended									2 Months Ended	3 Months Ended
Regulatory Matters (Narrative) (Detail) $ in Millions	Sep. 30, 2024 USD ($)	May 31, 2024 USD ($)	Mar. 31, 2024 USD ($) mi kV	Feb. 29, 2024 USD ($)	Jan. 31, 2024 USD ($)	Nov. 30, 2023 USD ($)	Oct. 31, 2023 USD ($) Project MW	Jul. 31, 2023 USD ($)	May 31, 2023 USD ($)	Jun. 30, 2024 USD ($)	Mar. 31, 2024 USD ($)
Virginia Regulation
Public Utilities General Disclosures [Line Items]
Percentage of earned return								9.04%
Authorized return percentage				9.35%				9.35%
Virginia Regulation \| Annual Fuel Factor \| Securitization Option
Public Utilities General Disclosures [Line Items]
Increase (decrease) in revenue requirement			$ 541
North Carolina Regulation
Public Utilities General Disclosures [Line Items]
Application date			2024-03
North Carolina Regulation \| Rider DSM
Public Utilities General Disclosures [Line Items]
Increase (Decrease) in customer usage tracker			$ 31
North Carolina Regulation \| Virginia Power Base Rate Case
Public Utilities General Disclosures [Line Items]
Increase(Decrease) in gas cost			$ 57
Percentage of earned return			5.01%
Percentage of proposed earned return			10.60%
Authorized return percentage			9.75%
South Carolina Regulation \| Electric Base Rate Case
Public Utilities General Disclosures [Line Items]
Percentage of earned return			4.32%
Percentage of proposed earned return			10.60%
Authorized return percentage			9.50%
Virginia Electric and Power Company
Public Utilities General Disclosures [Line Items]
Estimated under-recovered balances				$ 1,300
Virginia Electric and Power Company \| Impairment of Assets and Other Charges
Public Utilities General Disclosures [Line Items]
Impairment of assets and other charges (benefits)											$ (17)
Impairment of assets and other charges (benefits) after tax											(12)
Virginia Electric and Power Company \| Annual Fuel Factor
Public Utilities General Disclosures [Line Items]
Increase (decrease) in revenue requirement									$ (13)
Virginia Electric and Power Company \| Utility Scale Solar
Public Utilities General Disclosures [Line Items]
Proposed cost of project							$ 850
Number of utility-scale projects \| Project							4
Targeted capacity provided by legislation \| MW							329
Virginia Electric and Power Company \| Virginia Regulation
Public Utilities General Disclosures [Line Items]
Public utilities event costs to be recovered						$ 45
Authorized return percentage				9.70%				9.70%
Capitalization ratio								52.10%
Virginia Electric and Power Company \| Virginia Regulation \| Forecast
Public Utilities General Disclosures [Line Items]
One-time credits to customers	$ 15
Virginia Electric and Power Company \| Virginia Regulation \| Base Rate Case
Public Utilities General Disclosures [Line Items]
Total revenue requirement								$ 350
Virginia Electric and Power Company \| Virginia Regulation \| Annual Fuel Factor
Public Utilities General Disclosures [Line Items]
Total revenue requirement									$ 2,300
Rate year beginning									2023-07
Estimated under-recovered balances									$ 1,300
Virginia Electric and Power Company \| Virginia Regulation \| Annual Fuel Factor \| Forecast
Public Utilities General Disclosures [Line Items]
Total revenue requirement		$ 2,200
Rate year beginning		2024-07
Increase (decrease) in revenue requirement		$ 636
Estimated over-recovered balances										$ 266
Virginia Electric and Power Company \| Virginia Regulation \| Annual Fuel Factor \| Securitization Option
Public Utilities General Disclosures [Line Items]
Estimated under-recovered balances									$ 1,300
Virginia Electric and Power Company \| Virginia Regulation \| Generation And Distribution Services
Public Utilities General Disclosures [Line Items]
Authorized return percentage						9.05%
Virginia Electric and Power Company \| Biennial Review
Public Utilities General Disclosures [Line Items]
Authorized return percentage				0.70%
Dominion Energy South Carolina Inc \| South Carolina Regulation \| Electric DSM Programs
Public Utilities General Disclosures [Line Items]
Public energy efficiency programs cost rate adjustment approval request to recover amount					$ 47
Dominion Energy South Carolina Inc \| South Carolina Regulation \| Cost of Fuel
Public Utilities General Disclosures [Line Items]
Rate year beginning				2024-05
Application date				2024-02
Proposed increase (decrease) in annual base fuel component recoveries											(315)
Increase (decrease) in annual base fuel component recoveries			$ (316)
Dominion Energy South Carolina Inc \| South Carolina Regulation \| Electric Base Rate Case
Public Utilities General Disclosures [Line Items]
Increase (decrease) in revenue requirement			295
Increase (decrease) in net of strom damage			$ (4)
Dominion Energy South Carolina Inc \| South Carolina Regulation \| Electric Base Rate Case \| Forecast
Public Utilities General Disclosures [Line Items]
Increase (decrease) in revenue requirement	$ 291
Increase in proposed base rate percentage	12.59%
Dominion Energy South Carolina Inc \| South Carolina Regulation \| Electric Transmission Project
Public Utilities General Disclosures [Line Items]
Application date			2024-03
Type of Line \| kV			230
Miles of Lines \| mi			7
Cost Estimate			$ 40								$ 40