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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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Amount of liabilities due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

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- Definition

Percentage of voting equity interests acquired in a business combination achieved in stages, including equity interests in the acquiree held by the acquirer immediately before the acquisition date and acquired at the acquisition date.

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No definition available.

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Percentage of equity in the acquiree held by the acquirer immediately before the acquisition date in a business combination.

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No definition available.

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- Definition

Amount, after accumulated impairment loss, of 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.

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The tax effect of an increase or decrease in contributed capital (for example, deductible expenditures reported as a reduction of the proceeds from issuing capital stock) during the period charged or credited directly to shareholders' equity.

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- Definition

Percentage investment held by the managing member or general partner of the limited liability company (LLC) or limited partnership (LP).

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

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The amount for the individual regulatory liability as itemized in a table of regulatory liabilities as of the end of the period.

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Business Acquisitions - (Details) - USD ($) $ in Millions		12 Months Ended
Business Acquisitions - (Details) - USD ($) $ in Millions	Sep. 01, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Aug. 31, 2023
Business Acquisition [Line Items]
Regulatory liabilities		$ 7,033	$ 6,818
Acquisitions, net of cash acquired		0	0	$ 314
Goodwill		11,413	11,547	11,489
Deferred income taxes
Business Acquisition [Line Items]
Regulatory liabilities	$ 24	$ 2,493	$ 2,733
Cove Point LNG, LP
Business Acquisition [Line Items]
Income tax provision, equity transactions	120
Investment, step up in tax basis	$ 144
Cove Point LNG, LP \| Limited Partner \| Dominion Energy, Inc.
Business Acquisition [Line Items]
Limited partner, ownership percentage	50.00%
Cove Point LNG, LP
Business Acquisition [Line Items]
Business combination, consideration transferred, cash	$ 3,300
Cove Point LNG, LP \| Cove Point LNG, LP \| Limited Partner
Business Acquisition [Line Items]
Business combination, ownership interest after transaction		75.00%
Business combination, step acquisition, equity interest in acquiree, percentage					25.00%
Cove Point LNG, LP \| Cove Point LNG, LP \| General Partner
Business Acquisition [Line Items]
Business combination, step acquisition, equity interest in acquiree, percentage					100.00%
Cove Point LNG, LP \| Cove Point LNG, LP \| General Partner \| Cove Point GP Holding Company, LLC
Business Acquisition [Line Items]
Business combination, ownership interest after transaction		100.00%
Various acquisitions
Business Acquisition [Line Items]
Acquisitions, net of cash acquired				314
Assets acquired				363
Liabilities assumed				65
Goodwill				$ 16