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Commitments and Contingencies (Nuclear Insurance) (Detail) | Dec. 31, 2019 USD ($)
--- | ---
Millstone |
Guarantor Obligations [Line Items] |
Property insurance coverage | $ 1,700,000,000
Kewaunee |
Guarantor Obligations [Line Items] |
Property insurance coverage | 50,000,000.00
Summer |
Guarantor Obligations [Line Items] |
Property insurance coverage | 2,750,000,000
Surry | Virginia Electric and Power Company |
Guarantor Obligations [Line Items] |
Property insurance coverage | 1.70
North Anna | Virginia Electric and Power Company |
Guarantor Obligations [Line Items] |
Property insurance coverage | $ 1.70

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