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DEBT (Narrative) (Details) - Pacific Gas & Electric Co (Utility) - USD ($) $ in Millions | Apr. 18, 2023 | Jun. 22, 2023 | Jun. 05, 2023 | Mar. 30, 2023 | Jan. 06, 2023
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Letter of Credit Subfacility |  |  |  |  |
Debt [Line Items] |  |  |  |  |
Long-term debt, gross |  | $ 2,000 |  |  |
Uncommitted Incremental Facility |  |  |  |  |
Debt [Line Items] |  |  |  |  |
Long-term debt, gross |  | $ 1,000 |  |  |
364-Day 2023 Tranche Loans |  |  |  |  |
Debt [Line Items] |  |  |  |  |
Long-term debt, gross | $ 125 |  |  |  |
364-Day 2023 Tranche Loans | SOFR |  |  |  |  |
Debt [Line Items] |  |  |  |  |
Credit spread adjustment | 0.10% |  |  |  |
Basis spread on variable rate | 1.375% |  |  |  |
364-Day 2023 Tranche Loans | Base Rate |  |  |  |  |
Debt [Line Items] |  |  |  |  |
Basis spread on variable rate | 0.375% |  |  |  |
First Mortgage Bonds Due 2033 |  |  |  |  |
Debt [Line Items] |  |  |  |  |
Debt instrument, face amount |  |  | $ 1,150 |  | $ 750
Interest rate |  |  | 6.40% |  | 6.15%
First Mortgage Bonds Due 2053 |  |  |  |  |
Debt [Line Items] |  |  |  |  |
Debt instrument, face amount |  |  | $ 500 | $ 750 | $ 750
Interest rate |  |  | 6.75% | 6.70% | 6.75%
First Mortgage Bonds, Stated Maturity 2029 |  |  |  |  |
Debt [Line Items] |  |  |  |  |
Debt instrument, face amount |  |  | $ 850 |  |
Interest rate |  |  | 6.10% |  |
First Mortgage Bonds, Stated Maturity 2023 |  |  |  |  |
Debt [Line Items] |  |  |  |  |
Debt instrument, face amount |  |  | $ 375 |  |
Interest rate |  |  | 3.25% |  |
First Mortgage Bonds Due 2023 |  |  |  |  |
Debt [Line Items] |  |  |  |  |
Debt instrument, face amount |  |  | $ 500 |  |
Interest rate |  |  | 4.25% |  |

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