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COMMON STOCK AND SHARE-BASED COMPENSATION (Narrative) (Details) - USD ($) |  |  |  | 3 Months Ended | 12 Months Ended | 30 Months Ended | 45 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Feb. 14, 2024 | Jan. 16, 2024 | Nov. 27, 2023 | Mar. 31, 2021 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2023 | Sep. 30, 2023 | Jul. 08, 2021
Schedule of Capitalization, Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Common stock, shares outstanding (in shares) |  |  |  |  | 2,133,597,758 | 1,987,784,948 |  |  | 2,133,597,758 |  |
Common stock issued, net |  |  |  |  | $ (2,517,000,000) | $ (2,337,000,000) | $ 4,854,000,000 | [1] |  |  |
Entity Common Stock, Shares Outstanding (in shares) | 2,611,366,666 |  |  |  |  |  |  |  |  |  |
Common stock dividend declared (in dollars per share) |  |  | $ 0.01 |  |  |  |  |  |  |  |
Common stock dividends declared |  |  |  |  | $ 21,000,000 |  |  |  |  |  |
Equity capital structure percentage |  |  |  |  | 52.00% |  |  |  | 52.00% |  |
Shares available for LTIP award (in shares) |  |  |  |  | 61,716,764 |  |  |  | 61,716,764 |  |
Granted (in dollars per share) |  |  |  |  | $ 15.70 | $ 11.40 | $ 11.01 |  |  |  |
Total fair value |  |  |  |  | $ 64,000,000 | $ 46,000,000 | $ 19,000,000 |  |  |  |
Total unrecognized compensation costs |  |  |  |  | $ 74,000,000 |  |  |  |  |  |
Remaining weighted average period |  |  |  |  | 1 year 5 months 1 day |  |  |  |  |  |
Employee Stock Option |  |  |  |  |  |  |  |  |  |  |
Schedule of Capitalization, Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Granted (in shares) |  |  |  |  | 0 | 0 |  |  |  |  |
Weighted-average period |  |  |  |  | 1 year 3 months 7 days |  |  |  |  |  |
Restricted stock units |  |  |  |  |  |  |  |  |  |  |
Schedule of Capitalization, Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Award vesting period |  |  |  |  | 3 years |  |  |  |  |  |
Tax detriment |  |  |  |  | $ 26,000,000 |  |  |  |  |  |
Performance shares |  |  |  |  |  |  |  |  |  |  |
Schedule of Capitalization, Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Award vesting period |  |  |  |  | 3 years |  |  |  |  |  |
Industry performance period |  |  |  |  | 3 years |  |  |  |  |  |
Award grant date fair value recognition period |  |  |  |  | 3 years |  |  |  |  |  |
Performance shares granted (in dollars per share) |  |  |  |  | $ 13.39 | $ 13.44 | $ 11.83 |  |  |  |
Employee service share based compensation nonvested performance shares total compensation cost not yet recognized |  |  |  |  | $ 43,000,000 |  |  |  |  |  |
2014 LTIP, Amended |  |  |  |  |  |  |  |  |  |  |
Schedule of Capitalization, Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of shares issued for LTIP, maximum (in shares) |  |  |  |  | 91,000,000 |  |  |  | 91,000,000 |  |
2014 LTIP | Employee Stock Option |  |  |  |  |  |  |  |  |  |  |
Schedule of Capitalization, Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Term of award |  |  |  |  | 10 years |  |  |  |  |  |
Award vesting period |  |  |  |  | 3 years |  |  |  |  |  |
Total unrecognized compensation costs |  |  |  |  | $ 0 |  |  |  | $ 0 |  |
Granted (in shares) |  |  |  |  | 0 |  |  |  |  |  |
Fire Victim Trust |  |  |  |  |  |  |  |  |  |  |
Schedule of Capitalization, Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of shares exchanged (in shares) |  |  |  |  | 247,743,590 |  |  |  |  |  |
Shares sold, tax impact |  |  |  |  | $ 1,200,000,000 |  |  |  | $ 2,000,000,000 |  |
Number of shares sold (in shares) |  |  |  |  |  |  |  |  | 477,743,590 |  |
Subsequent Event |  |  |  |  |  |  |  |  |  |  |
Schedule of Capitalization, Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Common stock dividend declared (in dollars per share) | $ 0.01 |  |  |  |  |  |  |  |  |  |
Common stock dividends declared |  | $ 21,000,000 |  |  |  |  |  |  |  |  |
PG&E Corporation |  |  |  |  |  |  |  |  |  |  |
Schedule of Capitalization, Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Common stock to be received, value |  |  |  |  | $ 1,300,000,000 |  |  |  | $ 1,300,000,000 |  |
PG&E Corporation | Subsequent Event |  |  |  |  |  |  |  |  |  |  |
Schedule of Capitalization, Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Common stock, shares outstanding, adjusted (in shares) | 2,133,623,076 |  |  |  |  |  |  |  |  |  |
PG&E Corporation | Common Stock |  |  |  |  |  |  |  |  |  |  |
Schedule of Capitalization, Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Stock issued during period, shares, new issues (in shares) |  |  |  |  |  |  |  |  |  | 137,000,000 |
Common stock issued, net |  |  |  |  |  |  |  |  |  | $ 1,300,000,000 |
PG&E Corporation | Equity Units |  |  |  |  |  |  |  |  |  |  |
Schedule of Capitalization, Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Stock issued during period, shares, new issues (in shares) |  |  |  | 16,000,000 |  |  |  |  |  |  |
PG&E Corporation | Minimum |  |  |  |  |  |  |  |  |  |  |
Schedule of Capitalization, 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 Capitalization, Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Percentage of equity security ownership with board of director approval | 3.88% |  |  |  |  |  |  |  |  |  |
PG&E Corporation | Minimum | Common Stock |  |  |  |  |  |  |  |  |  |  |
Schedule of Capitalization, Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Amount of shares, right to receive |  |  |  | 137,000,000 |  |  |  |  |  |  |
PG&E Corporation | Maximum | Common Stock |  |  |  |  |  |  |  |  |  |  |
Schedule of Capitalization, Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Amount of shares, right to receive |  |  |  | 168,000,000 |  |  |  |  |  |  |
Pacific Gas & Electric Co (Utility) |  |  |  |  |  |  |  |  |  |  |
Schedule of Capitalization, Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Common stock, shares outstanding (in shares) |  |  |  |  | 477,743,590 |  |  |  | 477,743,590 |  |
Pacific Gas & Electric Co (Utility) | Fire Victim Trust |  |  |  |  |  |  |  |  |  |  |
Schedule of Capitalization, Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Common stock, shares outstanding (in shares) |  |  |  |  | 247,743,590 |  |  |  | 247,743,590 |  |
[1] | Excludes 477,743,590 shares of common stock owned by the Utility. For more information, see Note 6 of the Notes to the Consolidated Financial Statements in Item 8 of the 2021 Form 10-K .

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