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Acquisitions and Dispositions - (Schedule of Capital Expenditures and Significant Noncash Items Reported As Discontinued Operations) (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Significant noncash items |  |  |  |  |
Depreciation and amortization |  | $ 2,580 | $ 2,442 | $ 2,117 |
Accrued capital expenditures | [1],[2] | 1,085 | 979 | 637 |
Enbridge | East Ohio |  |  |  |  |
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items] |  |  |  |  |
Capital expenditures |  | 507 | 456 | 420 | [3]
Significant noncash items |  |  |  |  |
Depreciation and amortization |  | 148 | 134 | 122 |
Accrued capital expenditures |  | 42 | 53 | 27 |
Enbridge | PSNC |  |  |  |  |
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items] |  |  |  |  |
Capital expenditures |  | 233 | 153 | 195 | [3]
Significant noncash items |  |  |  |  |
Depreciation and amortization |  | 90 | 87 | 81 |
Accrued capital expenditures |  | 43 | 16 | 41 |
Enbridge | Questar Gas and Wexpro |  |  |  |  |
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items] |  |  |  |  |
Capital expenditures |  | 449 | 438 | 416 | [3]
Significant noncash items |  |  |  |  |
Depreciation and amortization |  | 175 | 163 | 168 |
Accrued capital expenditures |  | 32 | 31 | 25 |
Tredegar Solar Fund I, LLC | Other Sales |  |  |  |  |
Significant noncash items |  |  |  |  |
Depreciation and amortization |  | $ 2 | $ 4 | 4 |
Dominion Energy Gas Holdings, LLC | Q-Pipe Group |  |  |  |  |
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items] |  |  |  |  |
Capital expenditures |  |  |  | $ 34 |
[1] | See Note 9 for noncash investing activities related to the acquisition of a noncontrolling interest in Wrangler and Dominion Privatization.
[2] | See Notes 18, 19, 20 and 23 for noncash financing activities related to the contribution of stock to Dominion Energy’s defined benefit pension plan, remarketing of Series A Preferred Stock and the issuance of common stock and transfer of property associated with the settlement of litigation.
[3] | In November 2021, Wexpro closed on an agreement with a natural gas gathering systems operator to purchase an existing natural gas gathering system in Wyoming including pipelines, compressors and dehydration equipment for total consideration of $41 million, included in the Questar Gas Transaction.

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