SAN ONOFRE NUCLEAR GENERATING STATION - NUCLEAR INSURANCE (Details) - SDG&E $ in Millions	Dec. 31, 2024 USD ($)
Public Utilities, General Disclosures [Line Items]
Maximum required nuclear liability insurance available	$ 500
Maximum secondary financial protection available	60
Maximum nuclear liability loss coverage per incident	560
Federal nuclear property damage insurance	130
Federal nuclear property damage insurance, minimum required	50
Maximum nuclear property insurance terrorism coverage	$ 3,240