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REGULATORY ASSETS, LIABILITIES, AND BALANCING ACCOUNTS (Long-Term Regulatory Assets) (Details) - USD ($) $ in Millions | 9 Months Ended |  |  |
--- | --- | --- | --- | ---
Sep. 30, 2023 | Dec. 31, 2022 | Jun. 30, 2022 | Feb. 28, 2022
Regulatory Assets [Line Items] |  |  |  |
Current regulatory assets | $ 355 | $ 296 |  |
Regulatory assets | 16,444 | 16,443 |  |
Utility retained generation asset costs | 1,200 |  |  |
Customer Harm Threshold, post-emergence transaction, recovery bonds issued |  |  |  | $ 7,500
Initial shareholder contribution | 2,000 |  |  |
Pacific Gas & Electric Co (Utility) |  |  |  |
Regulatory Assets [Line Items] |  |  |  |
Current regulatory assets | 355 | 296 |  |
Deferred depreciation, interest and tax expense | 150 |  |  |
Regulatory assets | 16,444 | 16,443 |  |
Pension benefits |  |  |  |
Regulatory Assets [Line Items] |  |  |  |
Regulatory assets | 103 | 120 |  |
Environmental compliance costs |  |  |  |
Regulatory Assets [Line Items] |  |  |  |
Regulatory assets | 1,216 | 1,193 |  |
Utility retained generation |  |  |  |
Regulatory Assets [Line Items] |  |  |  |
Regulatory assets | 51 | 86 |  |
Price risk management |  |  |  |
Regulatory Assets [Line Items] |  |  |  |
Regulatory assets | 150 | 177 |  |
Catastrophic event memorandum account |  |  |  |
Regulatory Assets [Line Items] |  |  |  |
Regulatory assets | 1,072 | 1,085 |  |
Catastrophic event memorandum account | COVID-19 |  |  |  |
Regulatory Assets [Line Items] |  |  |  |
Regulatory assets | 44 | 44 |  |
Wildfire expense memorandum account |  |  |  |
Regulatory Assets [Line Items] |  |  |  |
Regulatory assets | 517 | 439 |  |
Fire hazard prevention memorandum account |  |  |  |
Regulatory Assets [Line Items] |  |  |  |
Regulatory assets | 54 | 79 |  |
Fire risk mitigation memorandum account |  |  |  |
Regulatory Assets [Line Items] |  |  |  |
Regulatory assets | 24 | 65 |  |
Wildfire mitigation plan memorandum account |  |  |  |
Regulatory Assets [Line Items] |  |  |  |
Regulatory assets | 778 | 756 |  |
Deferred income taxes |  |  |  |
Regulatory Assets [Line Items] |  |  |  |
Regulatory assets | 3,275 | 2,730 |  |
Insurance premium costs |  |  |  |
Regulatory Assets [Line Items] |  |  |  |
Regulatory assets | 0 | 99 |  |
Wildfire mitigation balancing account |  |  |  |
Regulatory Assets [Line Items] |  |  |  |
Regulatory assets | $ 225 | 327 |  |
Wildfire mitigation balancing account | Minimum |  |  |  |
Regulatory Assets [Line Items] |  |  |  |
Cost percentage threshold requiring approval | 115.00% |  |  |
Vegetation management balancing account |  |  |  |
Regulatory Assets [Line Items] |  |  |  |
Regulatory assets | $ 1,930 | 2,276 |  |
Cost percentage threshold requiring approval | 120.00% |  |  |
COVID-19 Pandemic protection memorandum account |  |  |  |
Regulatory Assets [Line Items] |  |  |  |
Regulatory assets | $ 16 | 26 |  |
COVID-19 pandemic protection memorandum account, undercollection bad debt |  |  |  |
Regulatory Assets [Line Items] |  |  |  |
Regulatory assets | 5 | 4 |  |
COVID-19 pandemic protection memorandum account, program and accounts receivable financing costs |  |  |  |
Regulatory Assets [Line Items] |  |  |  |
Regulatory assets | 11 | 22 |  |
Microgrid memorandum account |  |  |  |
Regulatory Assets [Line Items] |  |  |  |
Regulatory assets | 82 | 213 |  |
Financing costs |  |  |  |
Regulatory Assets [Line Items] |  |  |  |
Regulatory assets | 199 | 211 |  |
SB 901 Securitization |  |  |  |
Regulatory Assets [Line Items] |  |  |  |
Regulatory assets | 5,252 | 5,378 | $ 5,500 |
Recoveries in excess of AROs |  |  |  |
Regulatory Assets [Line Items] |  |  |  |
Regulatory assets | 173 | 120 |  |
Other |  |  |  |
Regulatory Assets [Line Items] |  |  |  |
Regulatory assets | $ 1,327 | $ 1,063 |  |

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- Definition Carrying amount as of the balance sheet date of capitalized costs of regulated entities that are expected to be recovered through revenue sources within one year or the normal operating cycle, if longer. Such costs are capitalized if they meet both of the following criteria: a. It is probable that future revenue in an amount at least equal to the capitalized cost will result from inclusion of that cost in allowable costs for rate-making purposes. b. Based on available evidence, the future revenue will be provided to permit recovery of the previously incurred cost rather than to provide for expected levels of similar future costs. If the revenue will be provided through an automatic rate-adjustment clause, this criterion requires that the regulator's intent clearly be to permit recovery of the previously incurred cost. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 980 -SubTopic 340 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481878/980-340-50-1 + Details
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