INCOME TAXES (Schedule of Income Tax Provision (Benefit)) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Current:
Federal	$ (1)	$ 0	$ (26)
State	0	1	(34)
Deferred:
Federal	(943)	543	258
State	(389)	296	171
Tax credits	(5)	(4)	(7)
Income tax provision (benefit)	(1,338)	836	362
Pacific Gas & Electric Co (Utility)
Current:
Federal	(1)	0	(26)
State	0	0	(34)
Deferred:
Federal	(852)	588	290
State	(348)	316	185
Tax credits	(5)	(4)	(7)
Income tax provision (benefit)	$ (1,206)	$ 900	$ 408