Income Taxes (Narrative) (Detail) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
Dec. 31, 2024 |
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| Income Taxes [Line Items] | |||||
| Production tax credit | $ 27 | ||||
| Remeasurement of unrecognized tax benefit | $ 135 | 135 | $ 170 | ||
| Income tax (benefit) expense from discontinued operations | (3) | $ (14) | (3) | $ 40 | |
| Virginia Electric and Power Company | |||||
| Income Taxes [Line Items] | |||||
| Production tax credit | 40 | $ 17 | |||
| Remeasurement of unrecognized tax benefit | 58 | 58 | $ 56 | ||
| Dominion Energy | |||||
| Income Taxes [Line Items] | |||||
| Effective tax rate income tax net benefit | 18 | ||||
| Remeasurement of unrecognized tax benefit | $ 30 | $ 30 | |||
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- Definition Effective income tax rate reconciliation, production tax credit, amount. No definition available.
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- Definition Income taxes. No definition available.
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- Definition Amount of tax expense (benefit) related to a discontinued operation. Includes, but is not limited to, tax expense (benefit) related to income (loss) from operations during the phase-out period, tax expense (benefit) related to gain (loss) on disposal, tax expense (benefit) related to gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and tax expense (benefit) related to adjustments of a prior period gain (loss) on disposal. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of unrecognized tax benefits. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Details
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