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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Wildfire Fund (Details) - USD ($) $ in Millions | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Dec. 31, 2024 | Jul. 12, 2019
Public Utility, Property, Plant and Equipment [Line Items] |  |  |  |
Litigation liability, current | $ 193 |  |  |
Wildfire Fund asset | 301 |  | $ 301 |
Litigation contribution, net | 4,000 |  |  |
Amortization and accretion | 76 | $ 78 |  |
Utility |  |  |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |  |  |
Wildfire Fund asset | 301 |  | $ 301 |
Amortization and accretion | 76 | $ 78 |  |
Other Current Liabilities |  |  |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |  |  |
Wildfire fund, noncurrent | $ 566 |  |  |
Wildfire Fund Asset |  |  |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |  |  |
Finite-lived intangible asset, useful life |  | 20 years |  | 15 years

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