Inventory write down, after tax.

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- Definition

Public utilities authorized return on equity percentage.

+ References

No definition available.

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- Definition

[Line Items] for Significant Accounting Policies [Table]

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No definition available.

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- Definition

The excess of replacement or current cost over the stated LIFO (last in first out) inventory value when the LIFO inventory method is utilized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
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-Paragraph 1
-Subparagraph (SX 210.5-02(6)(c))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

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- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Amount of impairment loss from asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

+ References

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- Definition

Amount of loss from reductions in inventory due to subsequent measurement adjustments, including, but not limited to, physical deterioration, obsolescence, or changes in price levels.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 330
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- Definition

The amount of LIFO (last in first out) inventory present at the reporting date when inventory is also valued using different valuation methods.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
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-Paragraph 1
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- Definition

Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Significant Accounting Policies (Narrative) (Detail 2) - USD ($)	1 Months Ended		12 Months Ended		24 Months Ended
	Feb. 29, 2024	Apr. 30, 2023	Dec. 31, 2024	Dec. 31, 2022	Dec. 31, 2024	Dec. 31, 2023
Significant Accounting Policies [Line Items]
Finite Lived Intangible Asset Useful Life			35 years		35 years
Impairment of goodwill			$ 0
Impairment of Assets and Other Charges
Significant Accounting Policies [Line Items]
Inventory balances wrote off				$ 40,000,000
Inventory balances wrote off, after tax				30,000,000
Minimum
Significant Accounting Policies [Line Items]
Lease extend term			1 year		1 year
Maximum
Significant Accounting Policies [Line Items]
Lease extend term			70 years		70 years
Virginia Electric and Power Company
Significant Accounting Policies [Line Items]
Finite Lived Intangible Asset Useful Life			35 years		35 years
Virginia Electric and Power Company \| Biennial Review
Significant Accounting Policies [Line Items]
Authorized return percentage	70.00%	9.35%			9.70%
Virginia Electric and Power Company \| Triennial Review
Significant Accounting Policies [Line Items]
Authorized return percentage		70.00%
Virginia Electric and Power Company \| Impairment of Assets and Other Charges
Significant Accounting Policies [Line Items]
Inventory balances wrote off				19,000,000
Inventory balances wrote off, after tax				$ 14,000,000
Dominion Energy Gas Holdings, LLC
Significant Accounting Policies [Line Items]
Inventory under LIFO method						$ 18,000,000
Amount exceeded on LIFO basis						$ 42,000,000