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DEBT (Narrative) (Details) - USD ($) |  |  |  |  | 6 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Apr. 20, 2022 | Apr. 04, 2022 | Mar. 31, 2022 | Feb. 18, 2022 | Jun. 30, 2022 | Jun. 30, 2021 | Jun. 08, 2022 | Dec. 31, 2021 | Aug. 11, 2021
Debt [Line Items] |  |  |  |  |  |  |  |  |
Repayments of long-term debt |  |  |  |  | $ 4,454,000,000 | $ 14,000,000 |  |  |
Regulatory assets |  |  |  |  | 15,215,000,000 |  |  | $ 9,207,000,000 |
Regulatory liabilities |  |  |  |  | 16,946,000,000 |  |  | 11,999,000,000 |
Proceeds from the sale of long-term debt |  |  |  | $ 1,000,000,000 |  |  |  |  |
Pacific Gas & Electric Co (Utility) |  |  |  |  |  |  |  |  |
Debt [Line Items] |  |  |  |  |  |  |  |  |
Repayments of long-term debt |  |  |  |  | 4,441,000,000 | $ 0 |  |  |
Regulatory assets |  |  |  |  | 15,215,000,000 |  |  | 9,207,000,000 |
Regulatory liabilities |  |  |  |  | 16,946,000,000 |  |  | 11,999,000,000 |
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 |  |  |  |  |  |  |
Credit spread adjustment |  | 0.10% |  |  |  |  |  |  |
364-Day 2022A Tranche Loans | Pacific Gas & Electric Co (Utility) | SOFR |  |  |  |  |  |  |  |  |
Debt [Line Items] |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  | 1.25% |  |  |  |  |  |  |
364-Day 2022A Tranche Loans | Pacific Gas & Electric Co (Utility) | Base Rate |  |  |  |  |  |  |  |  |
Debt [Line Items] |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  | 0.25% |  |  |  |  |  |  |
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] |  |  |  |  |  |  |  |  |
Long-term debt, gross |  |  |  |  | 1,000,000,000 |  |  | $ 974,000,000 |
Increase in facility limit | $ 500,000,000 |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity | $ 1,500,000,000 |  |  |  | $ 1,000,000,000 |  |  |  |
First Mortgage Bonds, Stated Maturity 2024 | Pacific Gas & Electric Co (Utility) |  |  |  |  |  |  |  |  |
Debt [Line Items] |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  | $ 1,000,000,000 |  |  |  |  |
Interest rate |  |  |  | 3.25% |  |  |  |  |
First Mortgage Bonds, Stated Maturity 2029 | Pacific Gas & Electric Co (Utility) |  |  |  |  |  |  |  |  |
Debt [Line Items] |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  | $ 400,000,000 |  |  |  |  |
Interest rate |  |  |  | 4.20% |  |  |  |  |
First Mortgage Bonds, Stated Maturity 2032 | Pacific Gas & Electric Co (Utility) |  |  |  |  |  |  |  |  |
Debt [Line Items] |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  | $ 450,000,000 |  |  |  |  |
Interest rate |  |  |  | 4.40% |  |  |  |  |
First Mortgage Bonds, Stated Maturity 2052 | Pacific Gas & Electric Co (Utility) |  |  |  |  |  |  |  |  |
Debt [Line Items] |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  | $ 550,000,000 |  |  |  |  |
Interest rate |  |  |  | 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% |  |
Intercompany Loan |  |  |  |  |  |  |  |  |
Debt [Line Items] |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  |  |  |  |  | $ 145,000,000

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