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COMMON STOCK AND SHARE-BASED COMPENSATION (Narrative) (Details) - USD ($) |  |  |  |  |  |  | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Feb. 16, 2023 | Jan. 09, 2023 | Dec. 20, 2022 | Sep. 16, 2022 | Jun. 17, 2022 | May 28, 2020 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Jul. 08, 2021 | Apr. 30, 2021
Schedule of Capitalization, Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Common stock, shares outstanding (in shares) |  |  |  |  |  |  | 1,987,784,948 | 1,985,400,540 |  |  |
Treasury stock, shares at cost (in shares) |  |  |  |  |  |  | 247,743,590 | 477,743,590 |  |  |
Shares outstanding (in shares) | 2,466,208,388 |  |  |  |  |  |  |  |  |  |
Equity capital structure percentage |  |  |  |  |  |  | 5200.00% |  |  |  |
Equity capital structure, waiver period |  |  |  |  |  | 5 years |  |  |  |  |
Non-GAAP core earnings threshold |  |  |  |  |  |  | $ 6,200,000,000 |  |  |  |
Shares available for LTIP award (in shares) |  |  |  |  |  |  | 53,350,101 |  |  |  |
Weighted average grant date fair value of granted shares (in dollars per share) |  |  |  |  |  |  | $ 11.40 | $ 11.01 | $ 9.25 |  |
Total fair value |  |  |  |  |  |  | $ 46,000,000 | $ 19,000,000 | $ 31,000,000 |  |
Total unrecognized compensation costs |  |  |  |  |  |  | $ 74,000,000 |  |  |  |
Remaining weighted average period |  |  |  |  |  |  | 1 year 5 months 23 days |  |  |  |
Pacific Gas & Electric Co (Utility) |  |  |  |  |  |  |  |  |  |  |
Schedule of Capitalization, Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Common stock, shares outstanding (in shares) |  |  |  |  |  |  | 230,000,000 |  |  |  |
Pacific Gas & Electric Co (Utility) |  |  |  |  |  |  |  |  |  |  |
Schedule of Capitalization, Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Common stock, shares outstanding (in shares) |  |  |  |  |  |  | 264,374,809 | 264,374,809 |  |  |
Shares outstanding (in shares) | 264,374,809 |  |  |  |  |  |  |  |  |  |
Common stock dividends paid |  |  | $ 425,000,000 | $ 425,000,000 | $ 425,000,000 |  | $ 1,275,000,000 | $ 0 | $ 0 |  |
Fire Victim Trust |  |  |  |  |  |  |  |  |  |  |
Schedule of Capitalization, Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of shares exchanged (in shares) |  |  |  |  |  |  | 230,000,000 |  |  |  |
Shares sold, tax impact |  |  |  |  |  |  | $ 870,000,000 |  |  |  |
Fire Victim Trust | Subsequent Event |  |  |  |  |  |  |  |  |  |  |
Schedule of Capitalization, Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of shares exchanged (in shares) |  | 60,000,000 |  |  |  |  |  |  |  |  |
Number of shares sold (in shares) | 290,000,000 |  |  |  |  |  |  |  |  |  |
2014 LTIP, Amended |  |  |  |  |  |  |  |  |  |  |
Schedule of Capitalization, Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of shares issued for LTIP, maximum (in shares) |  |  |  |  |  |  | 91,000,000 |  |  |  |
Stock Options |  |  |  |  |  |  |  |  |  |  |
Schedule of Capitalization, Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Granted (in shares) |  |  |  |  |  |  | 0 | 0 |  |  |
Weighted-average period |  |  |  |  |  |  | 11 months 8 days |  |  |  |
Stock Options | 2014 LTIP |  |  |  |  |  |  |  |  |  |  |
Schedule of Capitalization, Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Term of award |  |  |  |  |  |  | 10 years |  |  |  |
Award vesting period |  |  |  |  |  |  | 3 years |  |  |  |
Total unrecognized compensation costs |  |  |  |  |  |  | $ 0 |  |  |  |
Granted (in shares) |  |  |  |  |  |  | 0 |  |  |  |
Restricted stock units |  |  |  |  |  |  |  |  |  |  |
Schedule of Capitalization, Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Award vesting period |  |  |  |  |  |  | 3 years |  |  |  |
Tax detriment |  |  |  |  |  |  | $ 4,000,000 |  |  |  |
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) |  |  |  |  |  |  | $ 13.44 | $ 11.83 | $ 9.62 |  |
Employee service share based compensation nonvested performance shares total compensation cost not yet recognized |  |  |  |  |  |  | $ 43,000,000 |  |  |  |
PG&E Corporation | Subsequent Event |  |  |  |  |  |  |  |  |  |  |
Schedule of Capitalization, Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Common stock, shares outstanding, adjusted (in shares) | 1,800,721,208 |  |  |  |  |  |  |  |  |  |
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% |
PG&E Corporation | Minimum | Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |
Schedule of Capitalization, Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt, ratio of total consolidated debt to consolidated capitalization, loans outstanding balance |  |  |  |  |  |  | 150.00% |  |  |  |
Debt, ratio of total consolidated debt to consolidated capitalization, cash dividend declared |  |  |  |  |  |  | 100.00% |  |  |  |
PG&E Corporation | Minimum | Subsequent Event |  |  |  |  |  |  |  |  |  |  |
Schedule of Capitalization, Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Percentage of equity security ownership with board of director approval | 3.46% |  |  |  |  |  |  |  |  |  |
PG&E Corporation | Minimum | Common Stock |  |  |  |  |  |  |  |  |  |  |
Schedule of Capitalization, Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Amount of shares, right to receive |  |  |  |  |  |  |  |  | 138,000,000 |  |
PG&E Corporation | Maximum | Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |
Schedule of Capitalization, Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt, ratio of total consolidated debt to consolidated capitalization |  |  |  |  |  |  | 70.00% |  |  |  |
PG&E Corporation | Maximum | Common Stock |  |  |  |  |  |  |  |  |  |  |
Schedule of Capitalization, Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Amount of shares, right to receive |  |  |  |  |  |  |  |  | 168,000,000 |  |
PG&E Corporation | At The Market Equity Distribution Program | Common Stock |  |  |  |  |  |  |  |  |  |  |
Schedule of Capitalization, Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sale of stock, number of shares issued in transaction, amount |  |  |  |  |  |  |  |  |  |  | $ 400,000,000

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