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Acquisitions and Dispositions - (Schedule of Capital Expenditures and Significant Noncash Items Reported As Discontinued Operations) (Detail) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Significant noncash items |  |  |  |  |  |
Depreciation, depletion and amortization |  | $ 549 | $ 667 | $ 1,791 |  | $ 1,896
Accrued capital expenditures | [1] |  |  | 930 |  | 884
East Ohio | Enbridge |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Capital expenditures |  |  |  | 65 | [2] | 355
Significant noncash items |  |  |  |  |  |
Depreciation, depletion and amortization |  |  |  | 0 | [2] | 109
Accrued capital expenditures |  |  |  |  |  | 53
PSNC | Enbridge |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Capital expenditures |  |  |  | 287 | [2] | 153
Significant noncash items |  |  |  |  |  |
Depreciation, depletion and amortization |  |  |  | 0 | [2] | 67
Accrued capital expenditures |  |  |  |  |  | 22
Questar Gas and Wexpro | Enbridge |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Capital expenditures |  |  |  | 160 | [2] | 290
Significant noncash items |  |  |  |  |  |
Depreciation, depletion and amortization |  |  |  | 0 | [2] | 130
Accrued capital expenditures |  |  |  |  |  | 33
Other Sales |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Capital expenditures |  |  |  | 0 |  |
Significant noncash items |  |  |  |  |  |
Depreciation, depletion and amortization |  |  |  | $ 0 |  |
Other Sales | Tredegar Solar Fund I, LLC |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Capital expenditures |  |  |  |  |  | 0
Significant noncash items |  |  |  |  |  |
Depreciation, depletion and amortization |  |  |  |  |  | 2
Accrued capital expenditures |  |  |  |  |  | $ 0
[1] | See Notes 3 and 17 for noncash financing activities related to debt assumed with closing of the East Ohio Transaction, the Questar Gas Transaction and the PSNC Transaction and the transfer of property associated with the settlement of litigation.
[2] | Represents amounts attributable to Dominion Energy prior to the closing of the East Ohio Transaction which closed on March 6, 2024, the PSNC Transaction which closed on September 30, 2024 and the Questar Gas Transaction which closed on May 31, 2024, respectively.

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