INCOME TAXES (Schedule of Effective Income Tax Rate Reconciliation) (Details)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Pacific Gas & Electric Co
Federal statutory income tax rate	21.00%	21.00%	35.00%
State income tax (net of federal benefit)	7.50%	7.90%	1.60%
Effect of regulatory treatment of fixed asset differences	2.80%	3.60%	(16.80%)
Tax credits	0.10%	0.10%	(1.10%)
Compensation Related	0.00%	(0.10%)	(0.90%)
Tax Reform Adjustment	0.00%	0.10%	3.00%
Other, net	(0.50%)	0.00%	(0.70%)
Effective tax rate	30.90%	32.60%	20.10%
PG&E Corporation
Federal statutory income tax rate	21.00%	21.00%	35.00%
State income tax (net of federal benefit)	7.50%	7.90%	1.50%
Effect of regulatory treatment of fixed asset differences	2.80%	3.60%	(16.50%)
Tax credits	0.10%	0.10%	(1.10%)
Compensation Related	0.00%	(0.20%)	(1.00%)
Tax Reform Adjustment	0.00%	0.10%	6.80%
Other, net	(0.60%)	0.00%	(1.10%)
Effective tax rate	30.80%	32.50%	23.60%