Significant Financing Transactions (Narrative) (Detail) - USD ($)
|
1 Months Ended |
3 Months Ended |
6 Months Ended |
12 Months Ended |
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|
Jun. 30, 2025 |
May 31, 2025 |
Apr. 30, 2025 |
Feb. 28, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Mar. 31, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
Dec. 31, 2024 |
Jul. 31, 2025 |
Jan. 31, 2025 |
Dec. 31, 2023 |
Mar. 31, 2023 |
Nov. 30, 2020 |
Nov. 30, 2017 |
| Debt Instrument [Line Items] |
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| Facility Limit |
$ 8,000,000,000
|
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$ 8,000,000,000
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$ 8,000,000,000
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| Short-term debt |
$ 3,775,000,000
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$ 3,775,000,000
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3,775,000,000
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$ 2,500,000,000
|
[1] |
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| Line of credit issued |
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$ 0
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$ 3,000,000,000
|
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| Preferred stock shares authorized |
20,000,000
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|
20,000,000
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20,000,000
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| Dividend stock |
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$ 11,000,000
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$ 28,000,000
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$ 22,000,000
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48,000,000
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| Borrowings outstanding |
$ 0
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0
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0
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0
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| Issuance of common stock |
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|
70,000,000
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66,000,000
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| Issuance of common stock |
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$ 35,000,000
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$ 36,000,000
|
$ 70,000,000
|
$ 67,000,000
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| Common Stock |
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| Debt Instrument [Line Items] |
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| Stock repurchased, shares |
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0
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| Issuance of stock (in shares) |
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0
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|
1,000,000
|
1,000,000
|
1,000,000
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| Issuance of common stock |
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|
$ 35,000,000
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|
$ 36,000,000
|
$ 70,000,000
|
$ 67,000,000
|
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| Stock repurchase program, authorized amount |
$ 900,000,000
|
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$ 900,000,000
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|
900,000,000
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$ 1,000,000,000
|
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| Series B Preferred Stock |
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| Debt Instrument [Line Items] |
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| Preferred stock tendered, aggregate liquidation preference |
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|
$ 440,000,000
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440,000,000
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440,000,000
|
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| Deemed dividends |
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|
$ 9,000,000
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| Various Programs |
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| Debt Instrument [Line Items] |
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| Issuance of common stock |
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|
$ 70,000,000
|
$ 66,000,000
|
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| Issuance of stock (in shares) |
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|
1,000,000
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| Various Programs | Maximum |
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| Debt Instrument [Line Items] |
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| Issuance of stock (in shares) |
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|
1,000,000
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| Sales Agency Agreements to Effect Sales Under At-the-market Program | Maximum |
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| Debt Instrument [Line Items] |
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| Sale of stock authorized amount |
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$ 1,200,000,000
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| Forward Sale Agreements |
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| Debt Instrument [Line Items] |
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| Weighted average initial forward price per share |
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$ 55.83
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|
$ 55.34
|
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| Forward sale agreements, number of shares of common stock to be settled |
11,000,000
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|
11,000,000
|
8,800,000
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11,000,000
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| Aggregate Forward Sale Agreement |
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| Debt Instrument [Line Items] |
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| Weighted average initial forward price per share |
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$ 56.62
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| Forward sale agreements, number of shares of common stock to be settled |
18,500,000
|
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|
18,500,000
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18,500,000
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| Floating Rate Demand Notes |
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| Debt Instrument [Line Items] |
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| Short-term debt |
$ 424,000,000
|
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|
$ 424,000,000
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|
$ 424,000,000
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|
439,000,000
|
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| Floating Rate Demand Notes | Shelf Registration for Sale of Demand Notes |
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| Debt Instrument [Line Items] |
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| Facility Limit |
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$ 3,000,000,000
|
| DESC |
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| Debt Instrument [Line Items] |
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| Facility Limit |
1,000,000,000
|
|
$ 500,000,000
|
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|
1,000,000,000
|
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|
1,000,000,000
|
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| Short-term indebtedness outstanding |
|
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|
$ 1,800,000,000
|
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| DESC | Subsequent Event |
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| Debt Instrument [Line Items] |
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| Facility Limit |
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|
$ 900,000,000
|
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| GENCO |
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| Debt Instrument [Line Items] |
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| Short-term indebtedness outstanding |
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|
$ 300,000,000
|
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| Virginia Electric and Power Company |
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| Debt Instrument [Line Items] |
|
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| Facility Limit |
7,000,000,000
|
|
|
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|
7,000,000,000
|
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|
7,000,000,000
|
|
|
|
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|
|
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|
| Short-term debt |
1,745,000,000
|
|
|
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|
1,745,000,000
|
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|
1,745,000,000
|
|
$ 950,000,000
|
[2] |
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| Issuance of common stock |
2,100,000,000
|
|
|
|
|
|
|
|
2,100,000,000
|
$ 0
|
|
|
|
|
|
|
|
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| Issuance of common stock |
$ 3,500,000,000
|
|
|
|
|
$ 2,100,000,000
|
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|
$ 2,100,000,000
|
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|
| Virginia Electric and Power Company | Common Stock |
|
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| Debt Instrument [Line Items] |
|
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| Issuance of stock (in shares) |
30,006
|
|
|
|
|
30,000
|
|
|
30,000
|
|
0
|
|
|
|
|
|
|
|
| Issuance of common stock |
|
|
|
|
|
$ 2,100,000,000
|
|
|
$ 2,100,000,000
|
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|
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|
| Virginia Electric and Power Company | Senior Notes Due In 2035 |
|
|
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| Debt Instrument [Line Items] |
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| Debt instrument maturity year |
|
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|
2035
|
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| Interest Rate |
|
|
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|
5.15%
|
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| Debt issued amount |
|
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|
$ 625,000,000
|
|
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| Virginia Electric and Power Company | Senior Notes Due In 2055 |
|
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| Debt Instrument [Line Items] |
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| Debt instrument maturity year |
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|
2055
|
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| Interest Rate |
|
|
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|
|
5.65%
|
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| Debt issued amount |
|
|
|
|
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|
$ 625,000,000
|
|
|
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|
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|
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|
| Dominion Energy | Series B Preferred Stock |
|
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|
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| Debt Instrument [Line Items] |
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| Preferred stock shares outstanding |
|
|
|
|
|
|
|
|
|
|
|
|
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|
800,000
|
|
|
|
| Preferred stock shares issued |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
800,000
|
|
|
|
| Dividend stock |
|
|
|
|
|
|
|
17,000,000
|
|
$ 26,000,000
|
|
|
|
|
|
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| Preferred stock dividend per share |
|
|
|
|
|
|
|
|
|
$ 33.271
|
|
|
|
|
|
|
|
|
| Stock repurchased, shares |
|
|
|
|
400,000
|
|
|
|
|
|
|
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|
|
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|
| Dominion Energy | Series C Preferred Stock |
|
|
|
|
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| Debt Instrument [Line Items] |
|
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|
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| Preferred stock shares outstanding |
1,000,000
|
|
|
|
|
1,000,000
|
|
|
1,000,000
|
|
1,000,000
|
|
|
|
|
|
|
|
| Dividend stock |
|
|
|
|
|
$ 11,000,000
|
|
$ 11,000,000
|
$ 22,000,000
|
$ 22,000,000
|
|
|
|
|
|
|
|
|
| Preferred stock dividend per share |
|
|
|
|
|
$ 10.875
|
|
$ 10.875
|
$ 21.75
|
$ 21.75
|
|
|
|
|
|
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|
|
| Dominion Energy | Series D Preferred Stock |
|
|
|
|
|
|
|
|
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| Debt Instrument [Line Items] |
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|
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| Preferred stock dividend per share |
|
|
|
|
|
|
|
$ 21.646
|
|
|
|
|
|
|
|
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|
|
| Dominion Energy | Senior Notes Due In February 2024 |
|
|
|
|
|
|
|
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| Debt Instrument [Line Items] |
|
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|
|
|
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|
|
| Recorded interest expense |
|
|
|
|
|
|
|
|
|
$ 10,000,000
|
|
|
|
|
|
|
|
|
| Dominion Energy | Senior Notes Due In 2030 |
|
|
|
|
|
|
|
|
|
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|
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| Debt Instrument [Line Items] |
|
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|
|
|
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|
|
|
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|
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|
|
| Debt instrument maturity year |
|
|
|
|
|
|
2030
|
|
|
|
|
|
|
|
|
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|
|
| Interest Rate |
|
|
|
|
|
|
5.00%
|
|
|
|
|
|
|
|
|
|
|
|
| Debt issued amount |
|
|
|
|
|
|
$ 800,000,000
|
|
|
|
|
|
|
|
|
|
|
|
| Dominion Energy | Senior Notes Due In 2035 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt instrument maturity year |
|
|
|
|
|
|
2035
|
|
|
|
|
|
|
|
|
|
|
|
| Interest Rate |
|
|
|
|
|
|
5.45%
|
|
|
|
|
|
|
|
|
|
|
|
| Debt issued amount |
|
|
|
|
|
|
$ 700,000,000
|
|
|
|
|
|
|
|
|
|
|
|
| Dominion Energy | Senior Notes Due In 2028 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt instrument maturity year |
|
2028
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Interest Rate |
|
4.60%
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt issued amount |
|
$ 1,000,000,000
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| DESC | First Mortgage Bonds Due in 2035 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Interest Rate |
|
|
|
|
|
|
|
|
|
|
|
|
|
5.30%
|
|
|
|
|
| Debt issued amount |
|
|
|
|
|
|
|
|
|
|
|
|
|
$ 450,000,000
|
|
|
|
|
| Joint Revolving Credit Facility |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Facility Limit |
$ 6,000,000,000
|
|
7,000,000,000
|
|
|
$ 6,000,000,000
|
|
|
$ 6,000,000,000
|
|
|
|
|
|
|
|
|
|
| Letter of Credit |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Facility Limit |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$ 100,000,000
|
|
|
| Letters of credit issued and outstanding |
84,000,000
|
|
|
|
|
84,000,000
|
|
|
84,000,000
|
|
$ 48,000,000
|
|
|
|
|
|
|
|
| Letter of Credit | Credit Facility, Maturing in June 2024 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Facility Limit |
|
|
|
|
$ 275,000,000
|
|
|
$ 275,000,000
|
|
275,000,000
|
|
|
|
|
|
|
|
|
| Letters of credit issued and outstanding |
89,000,000
|
|
|
|
|
89,000,000
|
|
|
89,000,000
|
|
88,000,000
|
|
|
|
|
|
|
|
| Letter of Credit | Credit Facility Maturing In April 2030 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Facility Limit |
|
|
$ 3,000,000,000
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Line of credit facility, maturity date |
|
|
Apr. 30, 2030
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Letter of Credit | Credit Facility Maturing In June 2026 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Facility Limit |
2,000,000,000
|
|
|
|
|
2,000,000,000
|
|
|
$ 2,000,000,000
|
|
|
|
|
|
|
|
|
|
| Line of credit facility, maturity date |
|
|
|
|
|
|
|
|
Jun. 30, 2026
|
|
|
|
|
|
|
|
|
|
| Letter of Credit | Credit Facility in January 2025 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Facility Limit |
|
|
|
|
|
|
|
|
|
|
|
|
|
150,000,000
|
|
|
|
|
| Letters of credit issued and outstanding |
52,000,000
|
|
|
|
|
52,000,000
|
|
|
$ 52,000,000
|
|
|
|
|
|
|
|
|
|
| Letter of Credit | DESC | Credit Facility, Maturing in June 2024 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Letters of credit issued and outstanding |
89,000,000
|
|
|
|
|
89,000,000
|
|
|
89,000,000
|
|
88,000,000
|
|
|
|
|
|
|
|
| Letter of Credit | DESC | Credit Facility in January 2025 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Facility Limit |
|
|
|
|
|
|
|
|
|
|
|
|
|
50,000,000
|
|
|
|
|
| Letter of Credit | Virginia Electric and Power Company |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Facility Limit |
3,000,000,000
|
|
|
|
|
3,000,000,000
|
|
|
3,000,000,000
|
|
|
|
|
|
|
$ 300,000,000
|
|
|
| Line of credit issued |
|
|
|
|
|
|
|
|
159,000,000
|
|
112,000,000
|
|
|
|
|
|
|
|
| Letter of Credit | Virginia Electric and Power Company | Credit Facility, Maturing in June 2024 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Facility Limit |
|
|
|
|
$ 275,000,000
|
|
|
$ 275,000,000
|
|
$ 275,000,000
|
|
|
|
|
|
|
|
|
| Letters of credit issued and outstanding |
78,000,000
|
|
|
|
|
78,000,000
|
|
|
78,000,000
|
|
$ 77,000,000
|
|
|
|
|
|
|
|
| Letter of Credit | Virginia Electric and Power Company | Credit Facility in January 2025 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Facility Limit |
|
|
|
|
|
|
|
|
|
|
|
|
|
$ 100,000,000
|
|
|
|
|
| Letters of credit issued and outstanding |
$ 50,000,000
|
|
|
|
|
$ 50,000,000
|
|
|
$ 50,000,000
|
|
|
|
|
|
|
|
|
|
| Sustainability Revolving Credit Facility | Credit Facility Maturing In June 2025 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Facility Limit |
|
|
$ 900,000,000
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Line of credit facility, maturity date |
|
|
Apr. 30, 2028
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Sustainability Revolving Credit Facility | Credit Facility Maturing In April 2028 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Facility Limit |
|
|
$ 1,000,000,000
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Line of credit facility, maturity date |
|
|
Apr. 30, 2030
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|