| Document and Entity Information | Dec. 17, 2024 |
| Cover [Abstract] | |
| Document Type | 8-K/A |
| Amendment Flag | true |
| Document Period End Date | Dec. 17, 2024 |
| Entity Registrant Name | Dominion Energy, Inc |
| Entity Incorporation State Country Code | VA |
| Entity File Number | 001-08489 |
| Entity Tax Identification Number | 54-1229715 |
| Entity Address Address Line 1 | 120 Tredegar Street |
| Entity Address City Or Town | Richmond |
| Entity Address State Or Province | VA |
| Entity Address Postal Zip Code | 23219 |
| City Area Code | 804 |
| Local Phone Number | 819-2000 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Common Stock, no par value |
| Trading Symbol | D |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
| Amendment Description | This Amendment No. 8 to Form 8-K is being filed to replace the description of Dominion Energy, Inc.’s capital stock, which was filed with Amendment No. 7 to Form 8-K on February 21, 2023. The description is being updated to, among other things, remove references to the 4.65% Series B Fixed-Rate Reset Cumulative Redeemable Perpetual Preferred Stock, which Dominion Energy, Inc. redeemed in full effective December 15, 2024. |
| Entity Central Index Key | 0000715957 |
