Regulatory Matters - Schedule of Additional Significant Riders Associated with Virginia Power Projects (Detail) - Virginia Electric and Power Company $ in Millions |
6 Months Ended | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Jun. 30, 2026
USD ($)
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| Rider CCR | ||||||||||||
| Public Utilities General Disclosures [Line Items] | ||||||||||||
| Application Date | 2026-04 | |||||||||||
| Approval Date | Pending | |||||||||||
| Rate Year Beginning | 2027-01 | |||||||||||
| Total Revenue Requirement (millions) | $ 217 | [1] | ||||||||||
| Increase (decrease) in revenue requirement | $ 51 | |||||||||||
| Rider CE | ||||||||||||
| Public Utilities General Disclosures [Line Items] | ||||||||||||
| Application Date | 2025-10 | [2] | ||||||||||
| Approval Date | April 2026 | [2] | ||||||||||
| Rate Year Beginning | 2026-05 | [2] | ||||||||||
| Total Revenue Requirement (millions) | $ 280 | [1],[2] | ||||||||||
| Increase (decrease) in revenue requirement | $ 98 | [2] | ||||||||||
| Rider CERC | ||||||||||||
| Public Utilities General Disclosures [Line Items] | ||||||||||||
| Application Date | 2026-03 | |||||||||||
| Approval Date | Pending | |||||||||||
| Rate Year Beginning | 2027-01 | |||||||||||
| Total Revenue Requirement (millions) | $ 70 | [1] | ||||||||||
| Increase (decrease) in revenue requirement | $ 34 | |||||||||||
| Rider DIST | ||||||||||||
| Public Utilities General Disclosures [Line Items] | ||||||||||||
| Application Date | 2025-08 | [3] | ||||||||||
| Approval Date | May 2026 | [3] | ||||||||||
| Rate Year Beginning | 2026-06 | [3] | ||||||||||
| Total Revenue Requirement (millions) | $ 327 | [1],[3] | ||||||||||
| Increase (decrease) in revenue requirement | $ 60 | [3] | ||||||||||
| Rider GEN | ||||||||||||
| Public Utilities General Disclosures [Line Items] | ||||||||||||
| Application Date | 2026-06 | |||||||||||
| Approval Date | Pending | |||||||||||
| Rate Year Beginning | 2027-04 | |||||||||||
| Total Revenue Requirement (millions) | $ 430 | [1] | ||||||||||
| Increase (decrease) in revenue requirement | $ 119 | |||||||||||
| Rider GEN One | ||||||||||||
| Public Utilities General Disclosures [Line Items] | ||||||||||||
| Application Date | 2026-06 | |||||||||||
| Approval Date | Pending | |||||||||||
| Rate Year Beginning | 2028-04 | |||||||||||
| Total Revenue Requirement (millions) | $ 408 | [1] | ||||||||||
| Increase (decrease) in revenue requirement | $ (22) | |||||||||||
| Rider OSW | ||||||||||||
| Public Utilities General Disclosures [Line Items] | ||||||||||||
| Application Date | 2025-10 | |||||||||||
| Approval Date | July 2026 | |||||||||||
| Rate Year Beginning | 2026-09 | |||||||||||
| Total Revenue Requirement (millions) | $ 670 | [1] | ||||||||||
| Increase (decrease) in revenue requirement | $ 31 | |||||||||||
| Rider RGGI | ||||||||||||
| Public Utilities General Disclosures [Line Items] | ||||||||||||
| Application Date | 2026-06 | [4] | ||||||||||
| Approval Date | Pending | [4] | ||||||||||
| Rate Year Beginning | 2027-03 | [4] | ||||||||||
| Total Revenue Requirement (millions) | $ 1,179 | [1],[4] | ||||||||||
| Rider SNA | ||||||||||||
| Public Utilities General Disclosures [Line Items] | ||||||||||||
| Application Date | 2025-10 | |||||||||||
| Approval Date | July 2026 | |||||||||||
| Rate Year Beginning | 2026-09 | |||||||||||
| Total Revenue Requirement (millions) | $ 233 | [1] | ||||||||||
| Increase (decrease) in revenue requirement | $ 26 | |||||||||||
| Rider T1 | ||||||||||||
| Public Utilities General Disclosures [Line Items] | ||||||||||||
| Application Date | 2026-05 | [5] | ||||||||||
| Approval Date | Pending | [5] | ||||||||||
| Rate Year Beginning | 2026-09 | [5] | ||||||||||
| Total Revenue Requirement (millions) | $ 1,539 | [1],[5] | ||||||||||
| Increase (decrease) in revenue requirement | $ 196 | [5] | ||||||||||
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