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Preferred Stock (Schedule of Equity Units) (Detail) - USD ($) shares in Millions, $ in Millions |  | 12 Months Ended |
--- | --- | --- | ---
Jun. 14, 2019 | Dec. 31, 2021 | Dec. 31, 2022
Capital Unit [Line Items] |  |  |  |
Total Preferred Stock |  |  | $ 1,783 | $ 1,783
Stock Purchase Contract Liability |  |  | $ 44 |
Preferred Stock |  |  |  |
Capital Unit [Line Items] |  |  |  |
Units Issued |  |  | 1 |
Preferred Stock | 2019 Series A Corporate Units |  |  |  |
Capital Unit [Line Items] |  |  |  |
Units Issued |  | 16 |  |
Total Net Proceeds | [1] | $ 1,582 |  |
Total Preferred Stock | [2] | $ 1,610 |  |
Cumulative Dividend Rate |  | 1.75% |  |
Stock Purchase Contract Annual Rate |  | 5.50% |  |
Stock Purchase Contract Liability | [3] | $ 250 |  |
Stock Purchase Contract Settlement Date |  | Jun. 01, 2022 |  |
[1] | Issuance costs of $28 million were recorded as a reduction to preferred stock ($14 million) and common stock ($14 million). In connection with the reclassification of the Series A Preferred Stock to mezzanine equity in 2021, the issuance costs originally recognized as a reduction to preferred stock were reclassified to common stock.
[2] | Dominion Energy recorded dividends of $12 million ($7.292 per share), $28 million ($17.50 per share) and $28 million ($17.50 per share) for the years ended December 31, 2022, 2021 and 2020, respectively. In addition, Dominion Energy recorded interest expense of $7 million on the Series A Preferred Stock for the year ended December 31, 2022, following the reclassification of these shares to a mandatorily redeemable liability effective June 2022 as discussed above.
[3] | Payments of $44 million, $85 million and $83 million were made in 2022, 2021 and 2020, respectively. The stock purchase contract liability was $44 million at December 31, 2021.

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