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REGULATORY MATTERS - CPUC GRC Narrative (Details) - USD ($) $ in Millions | 1 Months Ended | 3 Months Ended | 12 Months Ended
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Apr. 30, 2025 | Dec. 31, 2024 | Oct. 31, 2023 | Mar. 31, 2025 | Dec. 31, 2027 | Dec. 31, 2026 | Dec. 31, 2025 | Dec. 31, 2024
California Public Utilities Commission |  |  |  |  |  |  |  |
General Rate Case [Line Items] |  |  |  |  |  |  |  |
CCM benchmark rate, variable rate (as a percent) |  |  |  | 1.00% |  |  |  |
SoCalGas | Catastrophic Event Memorandum Account And COVID -19 Pandemic Protections Memorandum Account | California Public Utilities Commission |  |  |  |  |  |  |  |
General Rate Case [Line Items] |  |  |  |  |  |  |  |
Requested recovery amount |  |  |  | $ 58 |  |  |  |
SoCalGas | Catastrophic Event Memorandum Account And COVID -19 Pandemic Protections Memorandum Account | Subsequent Event | California Public Utilities Commission |  |  |  |  |  |  |  |
General Rate Case [Line Items] |  |  |  |  |  |  |  |
Approved recovery amount | $ 19 |  |  |  |  |  |  |
2024 General Rate Case | General Rate Case | Subsequent Event |  |  |  |  |  |  |  |
General Rate Case [Line Items] |  |  |  |  |  |  |  |
Requested interim rate recovery | 50.00% |  |  |  |  |  |  |
2024 General Rate Case | Cost of Capital Proceeding |  |  |  |  |  |  |  |
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] |  |  |  |  |  |  |  |
Approved revenue requirement |  | $ 2,699 |  |  |  |  |  |
Approved revenue increase from prior request |  | $ 189 |  |  |  |  |  |
Approved revenue increase from prior request (percent) |  | 7.50% |  |  |  |  |  |
Net income tax benefits |  | $ 68 |  |  |  |  |  |
Approved rate of return |  | 0.0745 |  |  |  |  |  |
2024 General Rate Case | SDG&E | General Rate Case | California Public Utilities Commission | Electrical Operations |  |  |  |  |  |  |  |
General Rate Case [Line Items] |  |  |  |  |  |  |  |
Approved revenue requirement |  | $ 2,193 |  |  |  |  |  |
2024 General Rate Case | SDG&E | General Rate Case | California Public Utilities Commission | Natural Gas Operations |  |  |  |  |  |  |  |
General Rate Case [Line Items] |  |  |  |  |  |  |  |
Approved revenue requirement |  | 506 |  |  |  |  |  |
2024 General Rate Case | SDG&E | General Rate Case | Forecast | California Public Utilities Commission |  |  |  |  |  |  |  |
General Rate Case [Line Items] |  |  |  |  |  |  |  |
Approved revenue increase from prior request |  |  |  |  | $ 122 | $ 119 | $ 147 |
Approved revenue increase from prior request (percent) |  |  |  |  | 4.11% | 4.17% | 5.45% |
2024 General Rate Case | SoCalGas | General Rate Case | California Public Utilities Commission |  |  |  |  |  |  |  |
General Rate Case [Line Items] |  |  |  |  |  |  |  |
Approved revenue requirement |  | 3,806 |  |  |  |  |  |
Approved revenue increase from prior request |  | $ 324 |  |  |  |  |  |
Approved revenue increase from prior request (percent) |  | 9.30% |  |  |  |  |  |
Net income tax benefits |  | $ 202 |  |  |  |  |  |
Approved rate of return |  | 0.0749 |  |  |  |  |  |
2024 General Rate Case | SoCalGas | General Rate Case | Forecast | California Public Utilities Commission |  |  |  |  |  |  |  |
General Rate Case [Line Items] |  |  |  |  |  |  |  |
Approved revenue increase from prior request |  |  |  |  | $ 120 | $ 116 | $ 190 |
Approved revenue increase from prior request (percent) |  |  |  |  | 2.92% | 2.91% | 5.00% |
2024 GRC - 2024 Requirement | SDG&E | General Rate Case |  |  |  |  |  |  |  |
General Rate Case [Line Items] |  |  |  |  |  |  |  |
General rate case, expected recovery of wildlife mitigation plan costs |  |  |  |  |  |  |  | $ 194
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 |  |  |  |  |  |  |  |
General Rate Case [Line Items] |  |  |  |  |  |  |  |
General rate case, expected recovery of wildlife mitigation plan costs | $ 240 |  |  |  |  |  |  |
Requested review and recovery of wildfire mitigation plan | 417 |  |  |  |  |  |  |
2024 GRC - 2024 Requirement | SoCalGas | General Rate Case | Subsequent Event |  |  |  |  |  |  |  |
General Rate Case [Line Items] |  |  |  |  |  |  |  |
General rate case, expected recovery of wildlife mitigation plan costs | $ 499 |  |  |  |  |  |  |

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