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REGULATORY MATTERS - CPUC GRC Narrative (Details) - USD ($) $ in Millions |  | 1 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Oct. 18, 2024 | Oct. 31, 2024 | May 31, 2024 | Oct. 31, 2023 | Sep. 30, 2024 | Dec. 31, 2025 | Dec. 31, 2024
SDG&E | Subsequent Event | Forecast | California Public Utilities Commission |  |  |  |  |  |  |
General Rate Case [Line Items] |  |  |  |  |  |  |
Approved return on equity (as a percent) |  |  |  |  |  | 10.23% |
SoCalGas | Subsequent Event | Forecast | California Public Utilities Commission |  |  |  |  |  |  |
General Rate Case [Line Items] |  |  |  |  |  |  |
Approved return on equity (as a percent) |  |  |  |  |  | 10.08% |
2024 General Rate Case | Cost of Capital Proceeding |  |  |  |  |  |  |
General Rate Case [Line Items] |  |  |  |  |  |  |
Approved return on equity (as a percent) |  |  |  |  | 50.00% |  |
2024 General Rate Case | Cost of Capital Proceeding | Subsequent Event |  |  |  |  |  |  |
General Rate Case [Line Items] |  |  |  |  |  |  |
Change in benchmark rate during period percentage |  | 20.00% |  |  |  |  |
2024 General Rate Case | SDG&E | General Rate Case | California Public Utilities Commission |  |  |  |  |  |  |
General Rate Case [Line Items] |  |  |  |  |  |  |
Requested revenue requirements |  |  |  |  | $ 3,007 |  |
2024 General Rate Case | SDG&E | General Rate Case | Subsequent Event | California Public Utilities Commission |  |  |  |  |  |  |
General Rate Case [Line Items] |  |  |  |  |  |  |
Proposed revenue requirement | $ 2,800 |  |  |  |  |  |
Decrease in requested revenue requirement from prior years request | 207 |  |  |  |  |  |
Revenue increase | $ 267 |  |  |  |  |  |
Requested percent increase | 10.50% |  |  |  |  |  |
Requested revenue requirement, annual increase, percentage | 3.90% |  |  |  |  |  |
2024 General Rate Case | SDG&E | General Rate Case | Subsequent Event | California Public Utilities Commission | Electrical Operations |  |  |  |  |  |  |
General Rate Case [Line Items] |  |  |  |  |  |  |
Proposed revenue requirement | $ 2,198 |  |  |  |  |  |
2024 General Rate Case | SDG&E | General Rate Case | Subsequent Event | California Public Utilities Commission | Natural Gas Operations |  |  |  |  |  |  |
General Rate Case [Line Items] |  |  |  |  |  |  |
Proposed revenue requirement | 602 |  |  |  |  |  |
2024 General Rate Case | SDG&E | Cost of Capital Proceeding | Subsequent Event | California Public Utilities Commission |  |  |  |  |  |  |
General Rate Case [Line Items] |  |  |  |  |  |  |
Effect of approved decrease adjustment on ROE, percentage |  | 0.42% |  |  |  |  |
2024 General Rate Case | SoCalGas | General Rate Case | California Public Utilities Commission |  |  |  |  |  |  |
General Rate Case [Line Items] |  |  |  |  |  |  |
Requested revenue requirements |  |  | $ 4,434 |  |  |  |
2024 General Rate Case | SoCalGas | General Rate Case | Subsequent Event | California Public Utilities Commission |  |  |  |  |  |  |
General Rate Case [Line Items] |  |  |  |  |  |  |
Proposed revenue requirement | 4,062 |  |  |  |  |  |
Decrease in requested revenue requirement from prior years request | 372 |  |  |  |  |  |
Revenue increase | $ 523 |  |  |  |  |  |
Requested percent increase | 14.80% |  |  |  |  |  |
Requested revenue requirement, annual increase, percentage | 3.90% |  |  |  |  |  |
2024 General Rate Case | SoCalGas | Cost of Capital Proceeding | Subsequent Event | California Public Utilities Commission |  |  |  |  |  |  |
General Rate Case [Line Items] |  |  |  |  |  |  |
Effect of approved decrease adjustment on ROE, percentage |  | (0.42%) |  |  |  |  |
2024 GRC - 2024 Requirement | SDG&E | General Rate Case |  |  |  |  |  |  |
General Rate Case [Line Items] |  |  |  |  |  |  |
Requested review and recovery of wildfire mitigation plan |  |  |  | $ 1,500 |  |  |
2024 GRC - 2024 Requirement | SDG&E | General Rate Case | Forecast |  |  |  |  |  |  |
General Rate Case [Line Items] |  |  |  |  |  |  |
General rate case, expected recovery of wildlife mitigation plan costs |  |  |  |  |  | $ 96 |
2024 GRC - 2024 Requirement | SDG&E | General Rate Case | Subsequent Event | Forecast |  |  |  |  |  |  |
General Rate Case [Line Items] |  |  |  |  |  |  |
General rate case, expected recovery of wildlife mitigation plan costs |  |  |  |  |  |  | $ 194

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