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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (10K Narrative) (Details) ft² in Thousands |  |  | 1 Months Ended | 3 Months Ended | 12 Months Ended |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Nov. 17, 2022 USD ($) | Oct. 18, 2022 USD ($) | Nov. 30, 2022 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2022 USD ($) ft² employee | Dec. 31, 2021 USD ($) | Dec. 31, 2022 USD ($) ft² facility employee | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Jan. 31, 2023 ft² | Sep. 02, 2022 USD ($) | Jul. 20, 2022 USD ($) | May 10, 2022 USD ($) | Nov. 12, 2021 USD ($) | Oct. 23, 2020 USD ($) ft²
Public Utility, Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restricted cash |  |  |  | $ 16,000,000 | $ 213,000,000 | $ 16,000,000 | $ 213,000,000 | $ 16,000,000 |  |  |  |  |  |  |
Period for probable revenue recovery |  |  |  |  |  |  | 24 months |  |  |  |  |  |  |  |
Allowance for credit loss decrease |  |  |  |  | 88,000,000 | 207,000,000 |  |  |  |  |  |  |  |  |
Credit losses |  |  |  |  |  |  | $ 143,000,000 | 154,000,000 |  |  |  |  |  |  |
Decommissioning cost estimate |  |  |  | 4,000,000,000 |  |  |  |  |  |  |  |  |  |  |
Asset retirement obligation |  |  |  | 5,298,000,000 | 5,912,000,000 | 5,298,000,000 | 5,912,000,000 | 5,298,000,000 | $ 6,412,000,000 |  |  |  |  |  |
Decrease in decommissioning cost |  |  |  | 1,300,000,000 |  |  |  |  |  |  |  |  |  |  |
Decrease in decommissioning cost, un-escalated |  |  |  | 378,000,000 |  |  |  |  |  |  |  |  |  |  |
Decrease in decommissioning cost, escalated |  |  |  | 2,600,000,000 |  |  |  |  |  |  |  |  |  |  |
Increase (decrease) in asset retirement obligation |  |  |  |  |  |  | $ 614,000,000 |  |  |  |  |  |  |  |
Government Assistance, Statement of Income or Comprehensive Income [Extensible Enumeration] |  |  |  |  |  |  | Operating and maintenance |  |  |  |  |  |  |  |
Litigation liability, current |  |  |  |  | 193,000,000 |  | $ 193,000,000 |  |  |  |  |  |  |  |
Wildfire Fund asset |  |  |  | 461,000,000 | 460,000,000 | 461,000,000 | 460,000,000 | 461,000,000 |  |  |  |  |  |  |
Litigation contribution, net |  |  |  |  | 4,800,000,000 |  | 4,800,000,000 |  |  |  |  |  |  |  |
Amortization and accretion |  |  |  |  |  |  | 477,000,000 | 517,000,000 | $ 413,000,000 |  |  |  |  |  |
Insurance receivable |  |  |  | 1,247,000,000 | $ 794,000,000 | 1,247,000,000 | $ 794,000,000 | 1,247,000,000 |  |  |  |  |  |  |
Number of eligible employees | employee |  |  |  |  | 470 |  | 470 |  |  |  |  |  |  |  |
Lease payments |  |  |  |  |  |  | $ 2,300,000,000 | 2,400,000,000 |  |  |  |  |  |  |
Operating lease right of use asset |  |  |  | $ 1,234,000,000 | $ 1,311,000,000 | $ 1,234,000,000 | 1,311,000,000 | $ 1,234,000,000 |  |  |  |  |  |  |
Operating lease, right-of-use liability |  |  |  |  | $ 1,474,000,000 |  | $ 1,474,000,000 |  |  |  |  |  |  |  |
Weighted average remaining lease term |  |  |  | 6 years 14 days | 19 years 7 months 6 days | 6 years 14 days | 19 years 7 months 6 days | 6 years 14 days |  |  |  |  |  |  |
Weighted average discount rate |  |  |  | 6.10% | 6.50% | 6.10% | 6.50% | 6.10% |  |  |  |  |  |  |
CAPP Funding |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disbursement |  |  | $ 200,000,000 |  |  |  |  |  |  |  |  |  |  |  |
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 |  |  |  |  |  |  | $ 38,000,000 |  |  |  |  |  |  |  |
Civil Nuclear Credit Program |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disbursement | $ 1,100,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-Term Debt | Performance-Based Disbursement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reimbursement amount |  |  |  |  |  |  | 312,000,000 |  |  |  |  |  |  |  |
Other Current Liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Wildfire fund, noncurrent |  |  |  |  | $ 935,000,000 |  | 935,000,000 |  |  |  |  |  |  |  |
One-time Termination Benefits |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Severance costs |  |  |  |  |  |  | 80,000,000 |  |  |  |  |  |  |  |
Credits to employee retirement health savings accounts |  |  |  |  |  |  | 22,000,000 |  |  |  |  |  |  |  |
2021 Dixie fire |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Insurance receivable |  |  |  | $ 563,000,000 | 530,000,000 | $ 563,000,000 | 530,000,000 | $ 563,000,000 |  |  |  |  |  |  |
2021 Dixie fire | Other noncurrent assets – other |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Insurance receivable |  |  |  |  | 175,000,000 |  | 175,000,000 |  |  |  |  |  |  |  |
Regulatory Balancing Accounts Receivable |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total regulatory balancing accounts |  |  |  | 2,999,000,000 | 3,264,000,000 | 2,999,000,000 | 3,264,000,000 | 2,999,000,000 |  |  |  |  |  |  |
COVID-19 Pandemic protection memorandum account |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory assets |  |  |  | 30,000,000 | 3,000,000 | 30,000,000 | 3,000,000 | 30,000,000 |  |  |  |  |  |  |
FERC TO rates |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory assets |  |  |  | 12,000,000 | 8,000,000 | 12,000,000 | 8,000,000 | 12,000,000 |  |  |  |  |  |  |
Residential uncollectibles balancing accounts | Regulatory Balancing Accounts Receivable |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total regulatory balancing accounts |  |  |  | 127,000,000 | 126,000,000 | 127,000,000 | $ 126,000,000 | 127,000,000 |  |  |  |  |  |  |
Wildfire Fund Asset |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Finite-lived intangible asset, useful life |  |  |  |  |  |  | 15 years |  |  |  |  |  |  |  |
Recovery Bonds | Secured Debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  | 860,000,000 | 1,800,000,000 | 860,000,000 | $ 1,800,000,000 | 860,000,000 |  |  |  |  |  | $ 860,000,000 |
Long-term debt, gross |  |  |  | 860,000,000 | 9,292,000,000 | 860,000,000 | 9,292,000,000 | 860,000,000 |  |  |  |  |  |  |
Series 2022-A Recovery Bonds |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  | $ 983,000,000 |  |  |  |  |  |  |  |  |  |  |  |
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 |  |  |  |  | $ 3,900,000,000 | $ 3,600,000,000 |  |
Pacific Gas & Electric Co (Utility) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restricted cash |  |  |  | 16,000,000 | 213,000,000 | 16,000,000 | $ 213,000,000 | $ 16,000,000 |  |  |  |  |  |  |
Composite depreciation rate |  |  |  |  |  |  | 3.74% | 3.82% | 3.76% |  |  |  |  |  |
AFUDC debt recorded |  |  |  |  |  |  | $ 81,000,000 | $ 56,000,000 | $ 35,000,000 |  |  |  |  |  |
AFUDC equity recorded |  |  |  |  |  |  | 184,000,000 | 133,000,000 | 140,000,000 |  |  |  |  |  |
Nuclear decommissioning obligation accrued |  |  |  |  |  |  | 4,100,000,000 | 3,900,000,000 |  |  |  |  |  |  |
Decommissioning cost estimate |  |  |  |  |  |  | 7,100,000,000 | 7,600,000,000 |  |  |  |  |  |  |
Wildfire Fund asset |  |  |  | 461,000,000 | 460,000,000 | 461,000,000 | 460,000,000 | 461,000,000 |  |  |  |  |  |  |
Amortization and accretion |  |  |  |  | 477,000,000 | 517,000,000 | 477,000,000 | 517,000,000 | $ 413,000,000 |  |  |  |  |  |
Operating lease right of use asset |  |  |  | 1,232,000,000 | $ 1,311,000,000 | 1,232,000,000 | $ 1,311,000,000 | 1,232,000,000 |  |  |  |  |  |  |
Pacific Gas & Electric Co (Utility) | Oakland Headquarters Lease |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Rentable square feet | ft² |  |  |  |  | 488 |  | 488 |  |  |  |  |  |  |  | 910
Lease, option payment letter of credit |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 75,000,000
Lease, security letter of credit |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 75,000,000
Purchase options, land, value |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 892,000,000
Operating lease right of use asset |  |  |  |  | $ 535,000,000 |  | $ 535,000,000 |  |  |  |  |  |  |  |
Leasehold improvements |  |  |  |  | 214,000,000 |  | 214,000,000 |  |  |  |  |  |  |  |
Leasehold incentives |  |  |  |  | 137,000,000 |  | 137,000,000 |  |  |  |  |  |  |  |
Operating lease, right-of-use liability |  |  |  |  | 672,000,000 |  | 672,000,000 |  |  |  |  |  |  |  |
Pacific Gas & Electric Co (Utility) | Oakland Headquarters Lease | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Rentable square feet | ft² |  |  |  |  |  |  |  |  |  | 110 |  |  |  |  |
Pacific Gas & Electric Co (Utility) | Receivables Securitization Program |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt, gross |  |  |  | 974,000,000 | 1,184,000,000 | 974,000,000 | $ 1,184,000,000 | 974,000,000 |  |  |  |  |  |  |
Pacific Gas & Electric Co (Utility) | Senate Bill 846 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  | $ 1,100,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Pacific Gas & Electric Co (Utility) | Senate Bill 846 | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  |  |  |  |  |  |  | $ 1,400,000,000 |  |  |  |
Pacific Gas & Electric Co (Utility) | Diablo Canyon |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of generation facilities | facility |  |  |  |  |  |  | 2 |  |  |  |  |  |  |  |
Pacific Gas & Electric Co (Utility) | Humboldt Bay |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of generation facilities | facility |  |  |  |  |  |  | 1 |  |  |  |  |  |  |  |
PG&E AR Facility, LLC (SPV) | Receivables Securitization Program |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts receivable, net |  |  |  | $ 3,300,000,000 | $ 3,600,000,000 | $ 3,300,000,000 | $ 3,600,000,000 | $ 3,300,000,000 |  |  |  |  |  |  |

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