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Significant Accounting Policies (Additional Information) (Details) - Virginia Electric and Power Company $ in Millions | 9 Months Ended
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Sep. 30, 2023 USD ($)
Significant Accounting Policies [Line Items] |
Increase in asset retirement obligation | $ 510
Increase in regulatory assets | 444
Increase in other deferred charges and other assets | $ 66

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- Definition Increase (decrease) in other deferred charges and other assets. + References No definition available. + Details
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- Definition Increase (decrease) in regulatory assets. + References No definition available. + Details
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- Definition [Line Items] for Significant Accounting Policies [Table] + References No definition available. + Details
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- Definition The increase (decrease) during the reporting period in the carrying amount of asset retirement obligations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (a) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 + Details
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