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REGULATORY MATTERS - COST OF CAPITAL (Details) | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2025 | Dec. 31, 2025 | Dec. 31, 2024
Cost of Capital Proceeding | 2024 General Rate Case |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Change in benchmark rate during period percentage | 20.00% |  |
California Public Utilities Commission |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
CCM benchmark rate, variable rate (as a percent) | 1.00% |  |
SDG&E | California Public Utilities Commission |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Authorized weighting (as a percent) | 100.00% |  |
Weighted return on rate base (as a percent) |  |  | 7.67%
SDG&E | California Public Utilities Commission | Proposed Cost of Capital 2026-2028 |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Requested weighting (as a percent) | 100.00% |  |
Weighted requested return on rate base (as a percent) | 8.21% |  |
SDG&E | California Public Utilities Commission | Forecast |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Weighted return on rate base (as a percent) |  | 7.45% |
SDG&E | Authorized weighting | California Public Utilities Commission |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Approved debt capital structure (as a percent) | 45.25% |  |
SDG&E | Authorized weighting | California Public Utilities Commission | Proposed Cost of Capital 2026-2028 |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Requested debt capital structure (as a percent) | 46.00% |  |
SDG&E | Authorized weighting | California Public Utilities Commission | Preferred Equity |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Approved return on equity (as a percent) | 2.75% |  |
SDG&E | Authorized weighting | California Public Utilities Commission | Preferred Equity | Proposed Cost of Capital 2026-2028 |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Requested return on equity (as a percent) | 0.00% |  |
SDG&E | Authorized weighting | California Public Utilities Commission | Common Equity |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Approved return on equity (as a percent) | 52.00% |  |
SDG&E | Authorized weighting | California Public Utilities Commission | Common Equity | Proposed Cost of Capital 2026-2028 |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Requested return on equity (as a percent) | 54.00% |  |
SDG&E | Return on rate base | California Public Utilities Commission |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Approved debt capital structure (as a percent) |  |  | 4.34%
SDG&E | Return on rate base | California Public Utilities Commission | Proposed Cost of Capital 2026-2028 |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Requested debt capital structure (as a percent) | 4.62% |  |
SDG&E | Return on rate base | California Public Utilities Commission | Preferred Equity |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Approved return on equity (as a percent) |  |  | 6.22%
SDG&E | Return on rate base | California Public Utilities Commission | Preferred Equity | Proposed Cost of Capital 2026-2028 |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Requested return on equity (as a percent) | 6.22% |  |
SDG&E | Return on rate base | California Public Utilities Commission | Common Equity |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Approved return on equity (as a percent) |  |  | 10.65%
SDG&E | Return on rate base | California Public Utilities Commission | Common Equity | Proposed Cost of Capital 2026-2028 |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Requested return on equity (as a percent) | 11.25% |  |
SDG&E | Return on rate base | California Public Utilities Commission | Forecast |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Approved debt capital structure (as a percent) |  | 4.34% |
SDG&E | Return on rate base | California Public Utilities Commission | Forecast | Preferred Equity |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Approved return on equity (as a percent) |  | 6.22% |
SDG&E | Return on rate base | California Public Utilities Commission | Forecast | Common Equity |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Approved return on equity (as a percent) |  | 10.23% |
SDG&E | Weighted return on rate base | California Public Utilities Commission |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Approved debt capital structure (as a percent) |  |  | 1.96%
SDG&E | Weighted return on rate base | California Public Utilities Commission | Proposed Cost of Capital 2026-2028 |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Requested debt capital structure (as a percent) | 2.13% |  |
SDG&E | Weighted return on rate base | California Public Utilities Commission | Preferred Equity |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Approved return on equity (as a percent) |  |  | 0.17%
SDG&E | Weighted return on rate base | California Public Utilities Commission | Preferred Equity | Proposed Cost of Capital 2026-2028 |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Requested return on equity (as a percent) | 0.00% |  |
SDG&E | Weighted return on rate base | California Public Utilities Commission | Common Equity |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Approved return on equity (as a percent) |  |  | 5.54%
SDG&E | Weighted return on rate base | California Public Utilities Commission | Common Equity | Proposed Cost of Capital 2026-2028 |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Requested return on equity (as a percent) | 6.08% |  |
SDG&E | Weighted return on rate base | California Public Utilities Commission | Forecast |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Approved debt capital structure (as a percent) |  | 1.96% |
SDG&E | Weighted return on rate base | California Public Utilities Commission | Forecast | Preferred Equity |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Approved return on equity (as a percent) |  | 0.17% |
SDG&E | Weighted return on rate base | California Public Utilities Commission | Forecast | Common Equity |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Approved return on equity (as a percent) |  | 5.32% |
SoCalGas | California Public Utilities Commission |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Authorized weighting (as a percent) | 100.00% |  |
Weighted return on rate base (as a percent) |  |  | 7.67%
SoCalGas | California Public Utilities Commission | Proposed Cost of Capital 2026-2028 |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Requested weighting (as a percent) | 100.00% |  |
Weighted requested return on rate base (as a percent) | 8.15% |  |
SoCalGas | California Public Utilities Commission | Forecast |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Weighted return on rate base (as a percent) |  | 7.49% |
SoCalGas | Authorized weighting | California Public Utilities Commission |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Approved debt capital structure (as a percent) | 45.60% |  |
SoCalGas | Authorized weighting | California Public Utilities Commission | Proposed Cost of Capital 2026-2028 |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Requested debt capital structure (as a percent) | 45.60% |  |
SoCalGas | Authorized weighting | California Public Utilities Commission | Preferred Equity |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Approved return on equity (as a percent) | 2.40% |  |
SoCalGas | Authorized weighting | California Public Utilities Commission | Preferred Equity | Proposed Cost of Capital 2026-2028 |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Requested return on equity (as a percent) | 2.40% |  |
SoCalGas | Authorized weighting | California Public Utilities Commission | Common Equity |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Approved return on equity (as a percent) | 52.00% |  |
SoCalGas | Authorized weighting | California Public Utilities Commission | Common Equity | Proposed Cost of Capital 2026-2028 |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Requested return on equity (as a percent) | 52.00% |  |
SoCalGas | Return on rate base | California Public Utilities Commission |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Approved debt capital structure (as a percent) |  |  | 4.54%
SoCalGas | Return on rate base | California Public Utilities Commission | Proposed Cost of Capital 2026-2028 |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Requested debt capital structure (as a percent) | 5.02% |  |
SoCalGas | Return on rate base | California Public Utilities Commission | Preferred Equity |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Approved return on equity (as a percent) |  |  | 6.00%
SoCalGas | Return on rate base | California Public Utilities Commission | Preferred Equity | Proposed Cost of Capital 2026-2028 |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Requested return on equity (as a percent) | 6.00% |  |
SoCalGas | Return on rate base | California Public Utilities Commission | Common Equity |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Approved return on equity (as a percent) |  |  | 10.50%
SoCalGas | Return on rate base | California Public Utilities Commission | Common Equity | Proposed Cost of Capital 2026-2028 |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Requested return on equity (as a percent) | 11.00% |  |
SoCalGas | Return on rate base | California Public Utilities Commission | Forecast |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Approved debt capital structure (as a percent) |  | 4.63% |
SoCalGas | Return on rate base | California Public Utilities Commission | Forecast | Preferred Equity |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Approved return on equity (as a percent) |  | 6.00% |
SoCalGas | Return on rate base | California Public Utilities Commission | Forecast | Common Equity |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Approved return on equity (as a percent) |  | 10.08% |
SoCalGas | Weighted return on rate base | California Public Utilities Commission |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Approved debt capital structure (as a percent) |  |  | 2.07%
SoCalGas | Weighted return on rate base | California Public Utilities Commission | Proposed Cost of Capital 2026-2028 |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Requested debt capital structure (as a percent) | 2.29% |  |
SoCalGas | Weighted return on rate base | California Public Utilities Commission | Preferred Equity |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Approved return on equity (as a percent) |  |  | 0.14%
SoCalGas | Weighted return on rate base | California Public Utilities Commission | Preferred Equity | Proposed Cost of Capital 2026-2028 |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Requested return on equity (as a percent) | 0.14% |  |
SoCalGas | Weighted return on rate base | California Public Utilities Commission | Common Equity |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Approved return on equity (as a percent) |  |  | 5.46%
SoCalGas | Weighted return on rate base | California Public Utilities Commission | Common Equity | Proposed Cost of Capital 2026-2028 |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Requested return on equity (as a percent) | 5.72% |  |
SoCalGas | Weighted return on rate base | California Public Utilities Commission | Forecast |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Approved debt capital structure (as a percent) |  | 2.11% |
SoCalGas | Weighted return on rate base | California Public Utilities Commission | Forecast | Preferred Equity |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Approved return on equity (as a percent) |  | 0.14% |
SoCalGas | Weighted return on rate base | California Public Utilities Commission | Forecast | Common Equity |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Approved return on equity (as a percent) |  | 5.24% |

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