SAN ONOFRE NUCLEAR GENERATING STATION - NARRATIVE (Details) - SDG&E $ in Millions	Dec. 31, 2023 USD ($)
Jointly Owned Utility Plant Interests [Line Items]
Percentage of environmental exit costs incurred	20.00%
San Onofre Nuclear Generating Station (SONGS)
Jointly Owned Utility Plant Interests [Line Items]
Ownership percentage	20.00%
SONGS Units 2 and 3 Decommissioning
Jointly Owned Utility Plant Interests [Line Items]
Nuclear decommissioning trust authorized withdrawal amount	$ 79