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.

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+ Details

- Definition

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References + Details

Income Taxes (Narrative) (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
Income Taxes (Narrative) (Detail) - USD ($) $ in Millions	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Income Taxes [Line Items]
Income Tax Expense (Benefit)	$ (117)	$ (47)	$ 119	$ 165
Income tax expense (benefit) from discontinued operations	$ (2)	4	4	11
Continuing Operations
Income Taxes [Line Items]
Deferred income tax expense (benefit)			$ (21)
Hope Gas Inc
Income Taxes [Line Items]
Percentage of equity interests expected to be sold	100.00%		100.00%
Income Tax Expense (Benefit)			$ 90
Virginia Electric and Power Company
Income Taxes [Line Items]
Income Tax Expense (Benefit)		$ 69	61	$ 139
Virginia Electric and Power Company \| Continuing Operations
Income Taxes [Line Items]
Deferred income tax expense (benefit)			$ (16)