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v3.25.3

Significant Accounting Policies (Schedule of Revision of Previously Issued Consolidated Statements of Cash Flows) (Detail) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |
Net income including noncontrolling interests | $ 1,028 | $ 934 | $ 2,553 | $ 1,900
Operating Activities |  |  |  |
Deferred income taxes |  |  | 455 | (281)
Other operating assets and liabilities |  |  | 68 | (216)
Net cash provided by operating activities |  |  | 4,374 | 4,377
As Previously Reported |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |
Net income including noncontrolling interests |  | 958 |  | 1,979
Operating Activities |  |  |  |
Deferred income taxes |  |  |  | (346)
Other operating assets and liabilities |  |  |  | (230)
Net cash provided by operating activities |  |  |  | 4,377
Adjustments |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |
Net income including noncontrolling interests |  | (24) |  | (79)
Operating Activities |  |  |  |
Deferred income taxes |  |  |  | 65
Other operating assets and liabilities |  |  |  | (14)
Net cash provided by operating activities |  |  |  | 0
Virginia Electric And Power Company [Member] |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |
Net income including noncontrolling interests | $ 690 | 650 | 1,810 | 1,588
Operating Activities |  |  |  |
Deferred income taxes |  |  | 225 | 381
Other operating assets and liabilities |  |  | 323 | (84)
Net cash provided by operating activities |  |  | $ 3,318 | 3,935
Virginia Electric And Power Company [Member] | As Previously Reported |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |
Net income including noncontrolling interests |  | 654 |  | 1,598
Operating Activities |  |  |  |
Deferred income taxes |  |  |  | 381
Other operating assets and liabilities |  |  |  | (94)
Net cash provided by operating activities |  |  |  | 3,935
Virginia Electric And Power Company [Member] | Adjustments |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |
Net income including noncontrolling interests |  | $ (4) |  | (10)
Operating Activities |  |  |  |
Deferred income taxes |  |  |  | 0
Other operating assets and liabilities |  |  |  | (10)
Net cash provided by operating activities |  |  |  | $ 0

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