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DEBT (Narrative) (Details) |  |  |  |  |  | 12 Months Ended |  |  |  |  |  |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Oct. 04, 2022 | Apr. 20, 2022 USD ($) | Mar. 31, 2022 USD ($) | Feb. 18, 2022 USD ($) | Jul. 01, 2020 USD ($) numberOfClaimHolder numberOfExtensionOption | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Jan. 06, 2023 USD ($) | Nov. 30, 2022 USD ($) | Aug. 12, 2022 USD ($) | Aug. 05, 2022 USD ($) | Jun. 08, 2022 USD ($) | Apr. 04, 2022 USD ($) | Mar. 11, 2022 USD ($) | Aug. 11, 2021 USD ($) | Jun. 22, 2021 USD ($) | May 11, 2021 USD ($) | Apr. 23, 2021 USD ($) | Apr. 30, 2020 USD ($)
Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repayments of long-term debt |  |  |  |  |  | $ 5,968,000,000 | $ 87,000,000 | $ 764,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from the sale of long-term debt |  |  |  | $ 1,000,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
PG&E Corporation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repayments of long-term debt |  |  |  |  |  | 28,000,000 | 28,000,000 | 664,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Nothern California Wild Fire |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Customer Harm Threshold, post-emergence transaction, securitized |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 7,500,000,000 | $ 7,500,000,000 | $ 7,500,000,000
Nothern California Wild Fire | Fire Risk Mitigation Capital Expenditures |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Customer Harm Threshold, post-emergence transaction, securitized |  |  |  |  |  | 975,000,000 |  |  |  |  |  | $ 1,400,000,000 |  |  | $ 1,700,000,000 |  |  |  |  |
Customer Harm Threshold, post-emergence transaction, securitized, recorded |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 212,000,000 |  |  |  |  |
Customer Harm Threshold, post-emergence transaction, securitized, forecasted |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,160,000,000 |  |  |  |  |
Customer Harm Threshold, post-emergence transaction, securitized, pending |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 350,000,000 |  |  |  |  |
Pacific Gas & Electric Co (Utility) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repayments of long-term debt |  |  |  |  |  | 5,941,000,000 | 59,000,000 | $ 100,000,000 |  |  |  |  |  |  |  |  |  |  |  |
2020 Utility Term Loan Credit Agreement | Pacific Gas & Electric Co (Utility) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repayments of long-term debt |  |  | $ 298,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
364-Day 2022A Tranche Loans | Pacific Gas & Electric Co (Utility) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt, gross |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 500,000,000 |  |  |  |  |  |
364-Day 2022B Tranche Loans | Pacific Gas & Electric Co (Utility) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt, gross |  | $ 125,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Credit spread adjustment |  | 0.10% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
364-Day 2022B Tranche Loans | Pacific Gas & Electric Co (Utility) | SOFR |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  | 1.25% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
364-Day 2022B Tranche Loans | Pacific Gas & Electric Co (Utility) | Base Rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  | 0.25% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2-Year 2022B Tranche Loans | Pacific Gas & Electric Co (Utility) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt, gross |  | $ 400,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Credit spread adjustment |  | 0.10% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2-Year 2022B Tranche Loans | Pacific Gas & Electric Co (Utility) | SOFR |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  | 1.25% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2-Year 2022B Tranche Loans | Pacific Gas & Electric Co (Utility) | Base Rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  | 0.25% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Receivables Securitization Program | Pacific Gas & Electric Co (Utility) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  | $ 1,500,000,000 |  |  |  | 1,389,000,000 |  |  |  |  | $ 1,500,000,000 |  |  |  |  |  |  |  |  |
Long-term debt, gross |  |  |  |  |  | 1,184,000,000 | 974,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Increase in facility limit |  | $ 500,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Receivables Securitization Program | Pacific Gas & Electric Co (Utility) | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  |  |  |  |  | 1,000,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Receivables Securitization Program | Pacific Gas & Electric Co (Utility) | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  |  |  |  |  | 1,500,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  |  |  |  |  | 6,289,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Extension option, term | 1 year |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt, gross |  |  |  |  |  | 3,114,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility | PG&E Corporation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  |  |  |  | $ 500,000,000 | 500,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of extensions | numberOfExtensionOption |  |  |  |  | 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Extension option, term |  |  |  |  | 1 year |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt, gross |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility | Pacific Gas & Electric Co (Utility) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  |  |  |  | $ 3,500,000,000 | 4,400,000,000 |  |  |  |  |  |  |  |  |  |  | $ 4,000,000,000 |  |  |
Number of extensions | numberOfClaimHolder |  |  |  |  | 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Extension option, term | 1 year |  |  |  | 1 year |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt, gross |  |  |  |  |  | 1,930,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intercompany Loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 145,000,000 |  |  |  |
Series 2022-A Recovery Bonds |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  |  |  |  |  |  | $ 983,000,000 |  |  |  |  |  |  |  |  |  |
Series 2022-A Recovery Bonds | Tranche One |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  |  |  |  |  |  | $ 215,000,000 |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  |  |  |  | 5.045% |  |  |  |  |  |  |  |  |  |
Series 2022-A Recovery Bonds | Tranche Two |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  |  |  |  |  |  | $ 200,000,000 |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  |  |  |  | 5.256% |  |  |  |  |  |  |  |  |  |
Series 2022-A Recovery Bonds | Tranche Three |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  |  |  |  |  |  | $ 568,000,000 |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  |  |  |  | 5.536% |  |  |  |  |  |  |  |  |  |
First Mortgage Bonds, Stated Maturity 2024 | Pacific Gas & Electric Co (Utility) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt, gross |  |  |  |  |  | $ 1,800,000,000 | 800,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  | $ 1,000,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  | 3.25% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
First Mortgage Bonds, Stated Maturity 2024 | Pacific Gas & Electric Co (Utility) | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  | 3.25% |  |  |  |  |  |  |  |  |  |  |  |  |  |
First Mortgage Bonds, Stated Maturity 2024 | Pacific Gas & Electric Co (Utility) | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  | 3.75% |  |  |  |  |  |  |  |  |  |  |  |  |  |
First Mortgage Bonds, Stated Maturity 2029 | Pacific Gas & Electric Co (Utility) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt, gross |  |  |  |  |  | $ 400,000,000 | 0 |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  | $ 400,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  | 4.20% |  | 4.20% |  |  |  |  |  |  |  |  |  |  |  |  |  |
First Mortgage Bonds, Stated Maturity 2032 | Pacific Gas & Electric Co (Utility) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt, gross |  |  |  |  |  | $ 1,050,000,000 | 0 |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  | $ 450,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  | 4.40% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
First Mortgage Bonds, Stated Maturity 2032 | Pacific Gas & Electric Co (Utility) | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  | 4.40% |  |  |  |  |  |  |  |  |  |  |  |  |  |
First Mortgage Bonds, Stated Maturity 2032 | Pacific Gas & Electric Co (Utility) | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  | 5.90% |  |  |  |  |  |  |  |  |  |  |  |  |  |
First Mortgage Bonds, Stated Maturity 2052 | Pacific Gas & Electric Co (Utility) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt, gross |  |  |  |  |  | $ 550,000,000 | $ 0 |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  | $ 550,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  | 5.25% |  | 5.25% |  |  |  |  |  |  |  |  |  |  |  |  |  |
4.950% Bonds | Pacific Gas & Electric Co (Utility) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  |  |  |  |  |  |  |  |  | $ 450,000,000 |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  |  |  |  |  |  |  | 4.95% |  |  |  |  |  |  |
5.450% Bonds | Pacific Gas & Electric Co (Utility) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  |  |  |  |  |  |  |  |  | $ 450,000,000 |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  |  |  |  |  |  |  | 5.45% |  |  |  |  |  |  |
5.90% Bonds | Pacific Gas & Electric Co (Utility) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  |  |  |  |  |  |  |  |  | $ 600,000,000 |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  |  |  |  |  |  |  | 5.90% |  |  |  |  |  |  |
First Mortgage Bonds Due 2033 | Pacific Gas & Electric Co (Utility) | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  |  |  |  |  | $ 750,000,000 |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  |  |  | 6.15% |  |  |  |  |  |  |  |  |  |  |
First Mortgage Bonds Due 2053 | Pacific Gas & Electric Co (Utility) | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  |  |  |  |  | $ 750,000,000 |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  |  |  | 675.00% |  |  |  |  |  |  |  |  |  |  |

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- Definition Debt Instrument, Credit Spread Adjustment + References No definition available. + Details
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Namespace Prefix: | pcg_
Data Type: | dtr-types:percentItemType
Balance Type: | na
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- Definition Debt Instrument, Extension Option, Term + References No definition available. + Details
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Namespace Prefix: | pcg_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition Debt [Line Items] + References No definition available. + Details
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Namespace Prefix: | pcg_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Debt, Number of Extension Options + References No definition available. + Details
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Namespace Prefix: | pcg_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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- Definition Loss Contingency, Customer Harm Threshold, Post-emergence Transaction, Securitized + References No definition available. + Details
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Namespace Prefix: | pcg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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