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REGULATORY MATTERS - FERC RATE MATTERS (Details) - SDG&E - FERC | Jun. 30, 2026 | May 31, 2026
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TO5 Settlement |  |
Public Utilities, General Disclosures [Line Items] |  |
FERC requirement to maintain common equity ratio, at or above (percent) | 10.60% |
FERC requirement to maintain common equity ratio at or above, base (as a percent) | 10.10% |
TO6 Filing |  |
Public Utilities, General Disclosures [Line Items] |  |
FERC requirement to maintain common equity ratio at or above, base (as a percent) | 10.28% | 10.10%
Hypothetical capital structure, common equity percentage | 54.00% |

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