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Regulatory Matters - Summary of Additional Significant Riders Associated with Various Virginia Power Projects (Detail) - Virginia Electric and Power Company $ in Millions | 9 Months Ended
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Sep. 30, 2019 USD ($)
Rider BW |
Public Utilities General Disclosures [Line Items] |
Application Date | 2019-10
Approval Date | Pending
Rate Year Beginning | 2020-09
Total Revenue Requirement (millions) | $ 120
Increase (decrease) in revenue requirement | $ 1
Rider US-2 |
Public Utilities General Disclosures [Line Items] |
Application Date | 2019-10
Approval Date | Pending
Rate Year Beginning | 2020-09
Total Revenue Requirement (millions) | $ 10
Increase (decrease) in revenue requirement | $ (5)

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