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Regulatory Matters - Schedule of Additional Significant Riders Associated with Virginia Power Projects (Detail) - Virginia Electric and Power Company $ in Millions | 9 Months Ended
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Sep. 30, 2022 USD ($)
Rider B |
Public Utilities General Disclosures [Line Items] |
Application Date | 2022-06
Approval Date | Pending
Rate Year Beginning | 2023-04
Total Revenue Requirement (millions) | $ 34
Increase (decrease) in revenue requirement | $ 18
Rider B |
Public Utilities General Disclosures [Line Items] |
Application Date | 2022-06
Approval Date | Pending
Rate Year Beginning | 2024-04
Total Revenue Requirement (millions) | $ 34
Rider BW |
Public Utilities General Disclosures [Line Items] |
Application Date | 2021-10
Approval Date | May 2022
Rate Year Beginning | 2022-09
Total Revenue Requirement (millions) | $ 145
Increase (decrease) in revenue requirement | $ 32
Rider B W One |
Public Utilities General Disclosures [Line Items] |
Application Date | 2021-10
Approval Date | May 2022
Rate Year Beginning | 2023-09
Total Revenue Requirement (millions) | $ 120
Increase (decrease) in revenue requirement | $ (25)
Rider CCR |
Public Utilities General Disclosures [Line Items] |
Application Date | 2022-02
Approval Date | October 2022
Rate Year Beginning | 2022-12
Total Revenue Requirement (millions) | $ 231
Increase (decrease) in revenue requirement | $ 15
Rider CE |
Public Utilities General Disclosures [Line Items] |
Application Date | 2021-09
Approval Date | March 2022
Rate Year Beginning | 2022-05
Total Revenue Requirement (millions) | $ 71
Increase (decrease) in revenue requirement | $ 61
Rider GT |
Public Utilities General Disclosures [Line Items] |
Application Date | 2021-08
Approval Date | May 2022
Rate Year Beginning | 2022-06
Total Revenue Requirement (millions) | $ 56
Rider R |
Public Utilities General Disclosures [Line Items] |
Application Date | 2021-06
Approval Date | March 2022
Rate Year Beginning | 2022-04
Total Revenue Requirement (millions) | $ 59
Increase (decrease) in revenue requirement | $ 1
Rider R |
Public Utilities General Disclosures [Line Items] |
Application Date | 2021-06
Approval Date | March 2022
Rate Year Beginning | 2023-04
Total Revenue Requirement (millions) | $ 55
Increase (decrease) in revenue requirement | $ (4)
Rider CE |
Public Utilities General Disclosures [Line Items] |
Application Date | 2022-10
Approval Date | Pending
Rate Year Beginning | 2023-05
Total Revenue Requirement (millions) | $ 89
Increase (decrease) in revenue requirement | $ 18
Rider RGGI |
Public Utilities General Disclosures [Line Items] |
Application Date | 2021-12
Approval Date | Withdrawn
Rider RPS |
Public Utilities General Disclosures [Line Items] |
Application Date | 2021-12
Approval Date | June 2022
Rate Year Beginning | 2022-09
Total Revenue Requirement (millions) | $ 140
Increase (decrease) in revenue requirement | $ 127
Rider E |
Public Utilities General Disclosures [Line Items] |
Application Date | 2022-01
Approval Date | September 2022
Rate Year Beginning | 2022-11
Total Revenue Requirement (millions) | $ 101
Increase (decrease) in revenue requirement | $ 34
Rider OSW |
Public Utilities General Disclosures [Line Items] |
Application Date | 2022-11
Approval Date | Pending
Rate Year Beginning | 2023-09
Total Revenue Requirement (millions) | $ 271
Increase (decrease) in revenue requirement | $ 192
Rider SNA |
Public Utilities General Disclosures [Line Items] |
Application Date | 2021-10
Approval Date | July 2022
Rate Year Beginning | 2022-09
Total Revenue Requirement (millions) | $ 107
Rider T1 |
Public Utilities General Disclosures [Line Items] |
Application Date | 2022-05
Approval Date | July 2022
Rate Year Beginning | 2022-09
Total Revenue Requirement (millions) | $ 706
Increase (decrease) in revenue requirement | $ (168)
Rider GT |
Public Utilities General Disclosures [Line Items] |
Application Date | 2022-08
Approval Date | Pending
Rate Year Beginning | 2023-06
Total Revenue Requirement (millions) | $ 16
Increase (decrease) in revenue requirement | $ (40)
Rider U |
Public Utilities General Disclosures [Line Items] |
Application Date | 2021-06
Approval Date | March 2022
Rate Year Beginning | 2022-04
Total Revenue Requirement (millions) | $ 95
Increase (decrease) in revenue requirement | $ 15
Rider OSW |
Public Utilities General Disclosures [Line Items] |
Application Date | 2021-11
Approval Date | August 2022
Rate Year Beginning | 2022-09
Total Revenue Requirement (millions) | $ 79
Rider U |
Public Utilities General Disclosures [Line Items] |
Application Date | 2022-06
Approval Date | Pending
Rate Year Beginning | 2023-04
Total Revenue Requirement (millions) | $ 74
Increase (decrease) in revenue requirement | $ (21)
Rider US-2 |
Public Utilities General Disclosures [Line Items] |
Application Date | 2021-10
Approval Date | June 2022
Rate Year Beginning | 2022-09
Total Revenue Requirement (millions) | $ 11
Increase (decrease) in revenue requirement | $ 2
Rider US-3 |
Public Utilities General Disclosures [Line Items] |
Application Date | 2021-08
Approval Date | March 2022
Rate Year Beginning | 2022-06
Total Revenue Requirement (millions) | $ 50
Increase (decrease) in revenue requirement | $ 12
Rider SNA |
Public Utilities General Disclosures [Line Items] |
Application Date | 2022-10
Approval Date | Pending
Rate Year Beginning | 2023-09
Total Revenue Requirement (millions) | $ 50
Increase (decrease) in revenue requirement | $ (57)
Rider US-3 |
Public Utilities General Disclosures [Line Items] |
Application Date | 2022-08
Approval Date | Pending
Rate Year Beginning | 2023-06
Total Revenue Requirement (millions) | $ 40
Increase (decrease) in revenue requirement | $ (10)
Rider US-4 |
Public Utilities General Disclosures [Line Items] |
Application Date | 2021-08
Approval Date | March 2022
Rate Year Beginning | 2022-06
Total Revenue Requirement (millions) | $ 15
Increase (decrease) in revenue requirement | $ 5
Rider W |
Public Utilities General Disclosures [Line Items] |
Application Date | 2022-06
Approval Date | Pending
Rate Year Beginning | 2023-04
Total Revenue Requirement (millions) | $ 106
Increase (decrease) in revenue requirement | $ (15)
Rider US-4 |
Public Utilities General Disclosures [Line Items] |
Application Date | 2022-08
Approval Date | Pending
Rate Year Beginning | 2023-06
Total Revenue Requirement (millions) | $ 17
Increase (decrease) in revenue requirement | $ 2
Rider W |
Public Utilities General Disclosures [Line Items] |
Application Date | 2022-06
Approval Date | Pending
Rate Year Beginning | 2024-04
Total Revenue Requirement (millions) | $ 109
Increase (decrease) in revenue requirement | $ 3
DSM Riders [Member] |
Public Utilities General Disclosures [Line Items] |
Application Date | 2021-12
Approval Date | August 2022
Rate Year Beginning | 2022-09
Total Revenue Requirement (millions) | $ 91
Increase (decrease) in revenue requirement | $ 17

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