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

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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses 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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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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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 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 - BHE (Details) - USD ($) $ in Millions	Sep. 01, 2023	Sep. 30, 2023	Aug. 31, 2023	Dec. 31, 2022
Business Acquisition [Line Items]
Equity method investments		$ 5,808		$ 6,062
Deferred income tax charges
Business Acquisition [Line Items]
Regulatory liabilities	$ 24
Cove Point LNG, LP
Business Acquisition [Line Items]
Income tax provision, equity transactions	120
Cove Point LNG, LP
Business Acquisition [Line Items]
Business combination, consideration transferred, cash	$ 3,300
Cove Point LNG, LP \| Limited partner \| Cove Point LNG, LP
Business Acquisition [Line Items]
Business combination, ownership interest after transaction		75.00%
Business combination, ownership interest prior to transaction			25.00%
Cove Point LNG, LP \| Limited partner \| Dominion Energy, Inc.
Business Acquisition [Line Items]
Limited partner, ownership percentage	50.00%
Cove Point LNG, LP \| General partner \| Cove Point LNG, LP
Business Acquisition [Line Items]
Business combination, ownership interest prior to transaction			100.00%
Cove Point LNG, LP \| General partner \| Cove Point GP Holding Company, LLC \| Cove Point LNG, LP
Business Acquisition [Line Items]
Business combination, ownership interest after transaction		100.00%