Regulatory Matters - Summary of Virginia Power Electric Transmission Project Applied (Parenthetical) (Details) - Virginia Electric and Power Company $ in Millions	Dec. 31, 2023 USD ($)
Other transmission projects approved
Public Utilities, General Disclosures [Line Items]
Cost Estimate	$ 155
Other transmission projects applied
Public Utilities, General Disclosures [Line Items]
Cost Estimate	$ 145

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