INCOME TAXES (Schedule of Effective Income Tax Rate Reconciliation) (Details)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Pacific Gas & Electric Co (Utility)
Operating Loss Carryforwards [Line Items]
Federal statutory income tax rate	21.00%	21.00%	21.00%
State income tax (net of federal benefit)	24.10%	19.10%	7.50%
Effect of regulatory treatment of fixed asset differences	(51.60%)	(44.90%)	2.80%
Tax credits	1.20%	1.70%	0.10%
Fire Victim Trust	0.919	0.517	0
Bankruptcy and emergence	0.00%	2.40%	0.00%
Other, net	2.60%	2.20%	(0.50%)
Effective tax rate	86.80%	49.80%	30.90%
PG&E Corporation
Operating Loss Carryforwards [Line Items]
Federal statutory income tax rate	21.00%	21.00%	21.00%
State income tax (net of federal benefit)	31.30%	(15.30%)	7.50%
Effect of regulatory treatment of fixed asset differences	(71.50%)	39.00%	2.80%
Tax credits	(1.70%)	1.50%	0.10%
Fire Victim Trust	1.273	(0.449)	0
Bankruptcy and emergence	0.00%	(37.60%)	0.00%
Other, net	5.30%	(2.10%)	(0.60%)
Effective tax rate	111.70%	(38.40%)	30.80%