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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - 10Q Narrative (Details) ft² in Thousands |  |  | 3 Months Ended |
--- | --- | --- | --- | ---
Nov. 17, 2022 USD ($) | Oct. 18, 2022 USD ($) | Mar. 31, 2023 USD ($) ft² | Mar. 31, 2022 USD ($) | Dec. 31, 2022 USD ($)
Public Utility, Property, Plant and Equipment [Line Items] |  |  |  |  |
Period for probable revenue recovery |  |  | 24 months |  |
Credit losses |  |  | $ 139,000,000 |  |
Government Assistance, Statement of Income or Comprehensive Income [Extensible Enumeration] |  |  | Operating and maintenance |  |
Litigation liability, current |  |  | $ 193,000,000 |  |
Wildfire Fund asset |  |  | 460,000,000 |  | $ 460,000,000
Litigation contribution, net |  |  | 4,700,000,000 |  |
Amortization and accretion |  |  | 117,000,000 | $ 118,000,000 |
Insurance receivable |  |  | 743,000,000 |  | 794,000,000
Performance-Based Disbursement |  |  |  |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |  |  |  |
Disbursement |  | $ 7 |  |  |
Maximum disbursement |  | 300,000,000 |  |  |
Performance-Based Disbursement | Utilities Operating Expense, Maintenance and Operations |  |  |  |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |  |  |  |
Reimbursement amount |  |  | 33,000,000 |  |
Civil Nuclear Credit Program |  |  |  |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |  |  |  |
Disbursement | $ 1,100,000,000 |  |  |  |
Regulatory Balancing Accounts Receivable |  |  |  |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |  |  |  |
Total regulatory balancing accounts |  |  | 3,392,000,000 |  | 3,264,000,000
Regulatory Balancing Accounts Receivable | Residential uncollectibles balancing accounts |  |  |  |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |  |  |  |
Total regulatory balancing accounts |  |  | 104,000,000 |  | 126,000,000
COVID-19 Pandemic protection memorandum account |  |  |  |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |  |  |  |
Regulatory assets |  |  | 4,000,000 |  |
FERC |  |  |  |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |  |  |  |
Regulatory assets |  |  | 25,000,000 |  |
2021 Dixie fire |  |  |  |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |  |  |  |
Insurance receivable |  |  | $ 529,000,000 |  | 530,000,000
Wildfire Fund Asset |  |  |  |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |  |  |  |
Finite-lived intangible asset, useful life |  |  | 15 years |  |
Other Current Liabilities |  |  |  |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |  |  |  |
Wildfire fund, noncurrent |  |  | $ 937,000,000 |  |
Other noncurrent assets – other | 2021 Dixie fire |  |  |  |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |  |  |  |
Insurance receivable |  |  | 175,000,000 |  |
Long-Term Debt | Performance-Based Disbursement |  |  |  |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |  |  |  |
Reimbursement amount |  |  | 279,000,000 |  |
Pacific Gas & Electric Co (Utility) |  |  |  |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |  |  |  |
Wildfire Fund asset |  |  | 460,000,000 |  | 460,000,000
Amortization and accretion |  |  | $ 117,000,000 | $ 118,000,000 |
Pacific Gas & Electric Co (Utility) | The Lakeside Building |  |  |  |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |  |  |  |
Rentable square feet | ft² |  |  | 910 |  |
Receivables Securitization Program | Pacific Gas & Electric Co (Utility) |  |  |  |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |  |  |  |
Outstanding borrowings |  |  | $ 1,230,000,000 |  | 1,200,000,000
Receivables Securitization Program | PG&E AR Facility, LLC (SPV) |  |  |  |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |  |  |  |
Accounts receivable, net |  |  | 3,200,000,000 |  | 3,600,000,000
Recovery Bonds | Secured Debt |  |  |  |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |  |  |  |
Debt instrument, face amount |  |  | 1,800,000,000 |  | 1,800,000,000
SB 901 Securitization | Secured Debt |  |  |  |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |  |  |  |
Debt instrument, face amount |  |  | $ 7,500,000,000 |  | $ 7,500,000,000
Senate Bill 846 | Pacific Gas & Electric Co (Utility) |  |  |  |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |  |  |  |
Debt instrument, face amount |  | 1,100,000,000 |  |  |
Senate Bill 846 | Pacific Gas & Electric Co (Utility) | Maximum |  |  |  |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |  |  |  |
Debt instrument, face amount |  | $ 1,400,000,000 |  |  |

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