SAN ONOFRE NUCLEAR GENERATING STATION - NARRATIVE (Details) - SDG&E - USD ($) $ in Millions	Jan. 31, 2026	Dec. 31, 2025
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 | Subsequent Event
Jointly Owned Utility Plant Interests [Line Items]
Nuclear decommissioning trust authorized withdrawal amount	$ 45