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EQUITY (Narrative) (Details) - USD ($) |  |  |  |  |  |  | 3 Months Ended | 9 Months Ended | 10 Months Ended |  |  |
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Oct. 04, 2022 | Sep. 16, 2022 | Jun. 17, 2022 | May 15, 2022 | Apr. 14, 2022 | Jan. 31, 2022 | Sep. 30, 2022 | Jun. 30, 2022 | Mar. 31, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021 | Oct. 20, 2022 | Sep. 15, 2022 | Jul. 08, 2021 | Apr. 30, 2021
Schedule Of Changes In Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares outstanding (in shares) |  |  |  |  |  |  |  |  |  |  |  |  | 2,465,443,675 |  |  |
Cumulative and unpaid dividends |  |  |  |  |  | $ 59,100,000 |  |  |  |  |  |  |  |  |  |
Preferred stock dividend requirement |  |  |  | $ 3,500,000 |  |  | $ 3,000,000 | $ 4,000,000 | $ 2,000,000 |  |  |  |  |  |  |
Non-GAAP core earnings threshold |  |  |  |  |  |  |  |  |  |  | $ 6,200,000,000 |  |  |  |  |
Pacific Gas & Electric Co (Utility) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule Of Changes In Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares outstanding (in shares) |  |  |  |  |  |  |  |  |  |  |  |  | 264,374,809 |  |  |
Preferred stock dividend requirement |  |  |  |  |  |  | 3,000,000 |  |  | $ 3,000,000 | 10,000,000 | $ 10,000,000 |  |  |  |
Common stock dividends paid |  | $ 425,000,000 | $ 425,000,000 |  |  |  |  |  |  |  | $ 850,000,000 | $ 0 |  |  |  |
Fire Victim Trust |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule Of Changes In Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares exchanged (in shares) |  |  |  |  | 60,000,000 | 40,000,000 |  |  |  |  | 100,000,000 |  |  |  |  |
Shares sold, tax impact |  |  |  |  |  |  |  |  |  |  | $ 337,000,000 |  |  |  |  |
Fire Victim Trust | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule Of Changes In Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares exchanged (in shares) | 35,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares sold (in shares) |  |  |  |  |  |  |  |  |  |  |  |  | 135,000,000 |  |  |
Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule Of Changes In Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends payable |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 3,500,000 |  |
PG&E Corporation | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule Of Changes In Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock, shares outstanding, adjusted (in shares) |  |  |  |  |  |  |  |  |  |  |  |  | 1,644,956,495 |  |  |
PG&E Corporation | Common Stock | At The Market Equity Distribution Program |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule Of Changes In Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of stock, number of shares issued in transaction, amount |  |  |  |  |  |  | $ 400,000,000 |  |  |  | $ 400,000,000 |  |  |  |  | $ 400,000,000
PG&E Corporation | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule Of Changes In Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of equity security ownership with board of director approval |  |  |  |  |  |  | 4.75% |  |  |  | 4.75% |  |  |  | 4.75% |
PG&E Corporation | Minimum | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule Of Changes In Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of equity security ownership with board of director approval |  |  |  |  |  |  |  |  |  |  |  |  | 3.16% |  |  |

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