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EQUITY (Narrative) (Details) - USD ($) $ in Millions |  |  |  |  | 3 Months Ended | 21 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
May 15, 2023 | Apr. 26, 2023 | Feb. 28, 2023 | Feb. 15, 2023 | Mar. 31, 2023 | Mar. 31, 2022 | Mar. 31, 2023 | Dec. 31, 2022 | Jul. 08, 2021
Schedule Of Changes In Equity [Line Items] |  |  |  |  |  |  |  |  |
Shares outstanding (in shares) |  | 2,473,521,996 |  |  |  |  |  |  |
Common stock, shares outstanding (in shares) |  |  |  |  | 1,995,774,083 |  | 1,995,774,083 | 1,987,784,948 |
Non-GAAP core earnings threshold |  |  |  |  | $ 6,200.0 |  |  |  |
Pacific Gas & Electric Co (Utility) |  |  |  |  |  |  |  |  |
Schedule Of Changes In Equity [Line Items] |  |  |  |  |  |  |  |  |
Common stock, shares outstanding (in shares) |  |  |  |  | 60,000,000 |  | 60,000,000 |  |
Pacific Gas & Electric Co (Utility) |  |  |  |  |  |  |  |  |
Schedule Of Changes In Equity [Line Items] |  |  |  |  |  |  |  |  |
Shares outstanding (in shares) |  | 264,374,809 |  |  |  |  |  |  |
Common stock, shares outstanding (in shares) |  |  |  |  | 264,374,809 |  | 264,374,809 | 264,374,809 |
Common stock dividends paid |  |  | $ 425.0 | $ 3.5 | $ 425.0 | $ 0.0 |  |  |
Pacific Gas & Electric Co (Utility) | Forecast |  |  |  |  |  |  |  |  |
Schedule Of Changes In Equity [Line Items] |  |  |  |  |  |  |  |  |
Common stock dividends paid | $ 3.5 |  |  |  |  |  |  |  |
Fire Victim Trust |  |  |  |  |  |  |  |  |
Schedule Of Changes In Equity [Line Items] |  |  |  |  |  |  |  |  |
Shares sold, tax impact |  |  |  |  | $ 256.0 |  | $ 1,100.0 |  |
Number of shares sold (in shares) |  |  |  |  |  |  | 290,000,000 |  |
Fire Victim Trust | Subsequent Event |  |  |  |  |  |  |  |  |
Schedule Of Changes In Equity [Line Items] |  |  |  |  |  |  |  |  |
Number of shares sold (in shares) |  | 350,000,000 |  |  |  |  |  |  |
PG&E Corporation | Subsequent Event |  |  |  |  |  |  |  |  |
Schedule Of Changes In Equity [Line Items] |  |  |  |  |  |  |  |  |
Common stock, shares outstanding, adjusted (in shares) |  | 1,868,034,816 |  |  |  |  |  |  |
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 |  | 3.58% |  |  |  |  |  |  |

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