v3.25.2
SAN ONOFRE NUCLEAR GENERATING STATION - NARRATIVE (Details) - SDG&E - USD ($)
$ in Millions
Jun. 30, 2025
Jan. 31, 2025
Jointly Owned Nuclear Power Plant    
Jointly Owned Utility Plant Interests [Line Items]    
Jointly owned utility plant, proportionate ownership share (as a percent) 20.00%  
Percent of dismantlement work expense (as a percent) 20.00%  
Decommissioning costs $ 451  
SONGS 2 and 3 Decommissioning    
Jointly Owned Utility Plant Interests [Line Items]    
Nuclear decommissioning trust authorized withdrawal amount   $ 66