Regulatory Matters - Summary of Virginia Power Electric Transmission Project Applied (Parenthetical) (Details) - Virginia Electric and Power Company $ in Millions	Jun. 30, 2025 USD ($)
Other Transmission Projects Approved
Public Utilities, General Disclosures [Line Items]
Cost Estimate	$ 32
Other Transmission Projects Applied
Public Utilities, General Disclosures [Line Items]
Cost Estimate	$ 33

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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