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