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Commitments and Contingencies (Nuclear Insurance) (Details) - USD ($) |  | 3 Months Ended
--- | --- | ---
Jan. 05, 2018 | Mar. 31, 2018
Southern California Edison | Palo Verde |  |
Schedule Of Commitments And Contingencies [Line Items] |  |
Maximum per incident | $ 60,000,000 |
Maximum per incident, annually | 9,000,000 |
Maximum per incident, prior events | 255,000,000 |
Maximum per incident, prior events, annually | $ 38,000,000 |
Nuclear Insurance | San Onofre |  |
Schedule Of Commitments And Contingencies [Line Items] |  |
Federal limit on public liability claims from nuclear incident, approximate |  | $ 560,000,000
Nuclear Insurance | Palo Verde |  |
Schedule Of Commitments And Contingencies [Line Items] |  |
Federal limit on public liability claims from nuclear incident, approximate |  | 13,100,000,000
Nuclear Insurance | SCE and other owners of San Onofre and Palo Verde | San Onofre |  |
Schedule Of Commitments And Contingencies [Line Items] |  |
Loss limit, property damage insurance, federal minimum requirement |  | 50,000,000
Nuclear Insurance | SCE and other owners of San Onofre and Palo Verde | Palo Verde |  |
Schedule Of Commitments And Contingencies [Line Items] |  |
Loss limit, property damage insurance, federal minimum requirement |  | 1,060,000,000
Nuclear Insurance | Southern California Edison |  |
Schedule Of Commitments And Contingencies [Line Items] |  |
Limit on assessment of retrospective premium adjustments, per year, approximate |  | $ 52,000,000

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- Definition The approximate maximum amount of public liability, as limited by federal law, resulting from a nuclear incident. + References No definition available. + Details
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- Definition The approximate maximum yearly retrospective premium adjustments that could be assessed against the entity. + References No definition available. + Details
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- Definition Ownership Limit on Offsite Liability Claims from Nuclear Incident, Annually, Approximate + References No definition available. + Details
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- Definition Ownership Limit on Offsite Liability Claims from Nuclear Incident, Approximate + References No definition available. + Details
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- Details
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