EQUITY (Narrative) (Details) - USD ($) $ in Millions						3 Months Ended						9 Months Ended		12 Months Ended	27 Months Ended	45 Months Ended
	Oct. 18, 2023	Sep. 14, 2023	May 18, 2023	Feb. 16, 2023	Dec. 15, 2022	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2020	Sep. 30, 2023	Sep. 30, 2023	Dec. 31, 2022	Jul. 08, 2021
Schedule Of Changes In Equity [Line Items]
Stock issued during period, value, new issues						$ (610.0)	$ (609.0)	$ (610.0)		$ (609.0)	$ (407.0)
Shares outstanding (in shares)	2,611,251,771
Common stock, shares outstanding (in shares)						2,133,508,181						2,133,508,181			2,133,508,181	2,133,508,181	1,987,784,948
Preferred stock dividend requirement						$ 3.0	$ 4.0	$ 3.0	$ 3.0	$ 4.0	$ 2.0
Pacific Gas & Electric Co (Utility)
Schedule Of Changes In Equity [Line Items]
Common stock, shares outstanding (in shares)						180,000,000						180,000,000			180,000,000	180,000,000
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	264,374,809	264,374,809
Preferred stock dividend requirement		$ 3.5			$ 3.5	$ 3.0			$ 3.0			$ 10.0	$ 10.0
Common stock dividends declared		$ 450.0	$ 450.0	$ 425.0
Fire Victim Trust
Schedule Of Changes In Equity [Line Items]
Shares sold, tax impact												822.0			$ 1,700.0
Number of shares sold (in shares)															410,000,000
Fire Victim Trust | Subsequent Event
Schedule Of Changes In Equity [Line Items]
Number of shares sold (in shares)	410,000,000
Number of shares owned (in shares)	67,743,590
PG&E Corporation
Schedule Of Changes In Equity [Line Items]
Common stock to be received, value						$ 1,300.0						$ 1,300.0			$ 1,300.0	$ 1,300.0
PG&E Corporation | Equity Units
Schedule Of Changes In Equity [Line Items]
Stock issued during period, shares, new issues (in shares)														16,000,000
PG&E Corporation | Common Stock
Schedule Of Changes In Equity [Line Items]
Stock issued during period, shares, new issues (in shares)																137,000,000
Stock issued during period, value, new issues																$ 1,300.0
PG&E Corporation | Subsequent Event
Schedule Of Changes In Equity [Line Items]
Common stock, shares outstanding, adjusted (in shares)	2,065,764,591
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%	4.75%		4.75%
PG&E Corporation | Minimum | Common Stock
Schedule Of Changes In Equity [Line Items]
Amount of shares, right to receive														137,000,000
PG&E Corporation | Minimum | Subsequent Event
Schedule Of Changes In Equity [Line Items]
Percentage of equity security ownership with board of director approval	3.75%
PG&E Corporation | Maximum | Common Stock
Schedule Of Changes In Equity [Line Items]
Amount of shares, right to receive														168,000,000