SAN ONOFRE NUCLEAR GENERATING STATION - NUCLEAR INSURANCE (Details) - San Diego Gas and Electric Company $ in Millions	Jun. 30, 2022 USD ($)
Schedule Of Nuclear Insurance [Line Items]
Nuclear property damage insurance	$ 130.0
Federal nuclear property damage insurance, minimum required	50.0
Maximum premium assessment under nuclear property damage insurance	$ 4.1

Federal nuclear property damage insurance, minimum required

No definition available.

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