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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Wildfire Fund (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Public Utility, Property, Plant and Equipment [Line Items] |  |  |
Litigation liability, current | $ 193 |  |
Wildfire Fund asset | 450 | $ 460 |
Litigation contribution, net | 4,300 |  |
Amortization and accretion | 567 | 477 | $ 517
Insurance receivable | 436 | 794 |
2021 Dixie fire |  |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |  |
Insurance receivable | 326 | 530 |
Pacific Gas & Electric Co (Utility) |  |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |  |
Wildfire Fund asset | 450 | 460 |
Amortization and accretion | 567 | $ 477 | $ 517
Other Current Liabilities |  |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |  |
Wildfire fund, noncurrent | 750 |  |
Other noncurrent assets – other | 2021 Dixie fire |  |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |  |
Insurance receivable | 325 |  |
Other noncurrent assets – other | Pacific Gas & Electric Co (Utility) | 2021 Dixie fire |  |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |  |
Insurance receivable | $ 275 |  |

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- Definition Carrying amount of reserve for known or estimated probable loss from litigation, which may include attorneys' fees and other litigation costs, which is expected to be paid within one year of the date of the statement of financial position. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 450 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147483076/450-20-50-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.25) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
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