INCOME TAXES (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended	30 Months Ended
	Dec. 31, 2023	Dec. 31, 2023	Dec. 31, 2022
Investments, Owned, Federal Income Tax Note [Line Items]
Total UTB that, if recognized, would impact the effective income tax rate as of the end of the year	$ 33	$ 33
Income tax deduction, repair costs	850
Income tax deduction, customer bill credits	$ 400
Equity securities ownership, threshold	4.75%	4.75%
Common stock, shares outstanding (in shares)	2,133,597,758	2,133,597,758	1,987,784,948
Pacific Gas & Electric Co (Utility)
Investments, Owned, Federal Income Tax Note [Line Items]
Common stock, shares outstanding (in shares)	477,743,590	477,743,590
Fire Victim Trust
Investments, Owned, Federal Income Tax Note [Line Items]
Number of shares sold (in shares)		477,743,590
Shares sold, tax impact	$ 1,200	$ 2,000
Fire Victim Trust | Pacific Gas & Electric Co (Utility)
Investments, Owned, Federal Income Tax Note [Line Items]
Common stock, shares outstanding (in shares)	247,743,590	247,743,590