SAN ONOFRE NUCLEAR GENERATING STATION - NUCLEAR INSURANCE (Details) - SDG&E $ in Millions	Dec. 31, 2023 USD ($)
Public Utilities, General Disclosures [Line Items]
Maximum required nuclear liability insurance available	$ 450
Maximum secondary financial protection available	110
Maximum nuclear liability loss coverage per incident	560
Federal nuclear property damage insurance	130
Federal nuclear property damage insurance, minimum required	50
Maximum premium assessment under nuclear property damage insurance	2
Maximum nuclear property insurance terrorism coverage	$ 3,240