SAN ONOFRE NUCLEAR GENERATING STATION - NARRATIVE (Details) - San Diego Gas and Electric Company - USD ($) $ in Millions |
Sep. 30, 2026 |
Jan. 31, 2026 |
|---|---|---|
| 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 | $ 440 | |
| SONGS 2 and 3 Decommissioning | ||
| Jointly Owned Utility Plant Interests [Line Items] | ||
| Nuclear decommissioning trust authorized withdrawal amount | $ 45 |