COMMON STOCK AND SHARE-BASED COMPENSATION (Narrative) (Details) - USD ($)						3 Months Ended				12 Months Ended
	Dec. 04, 2024	Nov. 29, 2024	Sep. 19, 2024	May 16, 2024	Feb. 13, 2024	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Feb. 05, 2025	Jul. 08, 2021
Schedule of Capitalization, Equity [Line Items]
Common stock, shares outstanding (in shares)						2,193,573,536				2,193,573,536	2,133,597,758
Common stock issued, net										$ 1,128,000,000	$ (2,517,000,000)	$ (2,337,000,000)
Investment plan, term										5 years
Entity Common Stock, Shares Outstanding (in shares)													2,671,320,389
Common stock dividends declared										$ 120,000,000	21,000,000
Preferred stock dividend requirement										$ 37,000,000	$ 14,000,000	$ 13,000,000
Shares available for LTIP award (in shares)						55,900,800				55,900,800
Granted (in dollars per share)										$ 16.74	$ 15.70	$ 11.40
Total fair value										$ 62,000,000	$ 64,000,000	$ 46,000,000
Total unrecognized compensation costs										$ 90,000,000
Remaining weighted average period										1 year 6 months 7 days
Over-Allotment Option
Schedule of Capitalization, Equity [Line Items]
Common stock issued, net	$ 1,130,000,000
Pacific Gas & Electric Co (Utility)
Schedule of Capitalization, Equity [Line Items]
Common stock, shares outstanding (in shares)						800,000,000				800,000,000	800,000,000
Entity Common Stock, Shares Outstanding (in shares)													264,374,809
Common stock dividends declared		$ 575,000,000	$ 500,000,000	$ 500,000,000	$ 450,000,000
Preferred stock dividend requirement		3,500,000	3,500,000	3,500,000	3,500,000					$ 14,000,000	$ 14,000,000	$ 14,000,000
Employee Stock Option
Schedule of Capitalization, Equity [Line Items]
Granted (in shares)										0	0
Weighted-average period										1 year 2 months 1 day
Restricted stock units
Schedule of Capitalization, Equity [Line Items]
Award vesting period										3 years
Tax detriment										$ 21,000,000
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)										$ 16.94	$ 13.39	$ 13.44
Employee service share based compensation nonvested performance shares total compensation cost not yet recognized										$ 48,000,000
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
PG&E Corporation
Schedule of Capitalization, Equity [Line Items]
Common stock dividend declared (in dollars per share)						$ 0.025	$ 0.01	$ 0.01	$ 0.01
Preferred stock dividend requirement		$ 55,000,000	$ 21,000,000	$ 21,000,000	$ 21,000,000
PG&E Corporation | Subsequent Event
Schedule of Capitalization, Equity [Line Items]
Common stock, shares outstanding, adjusted (in shares)													2,193,576,799
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%
Pacific Gas & Electric Co (Utility)
Schedule of Capitalization, Equity [Line Items]
Common stock issued, net (in shares)	55,961,070