DEBT (Narrative) (Details) - Pacific Gas & Electric Co (Utility) - USD ($) $ in Millions	Apr. 18, 2023	Jun. 22, 2023	Jun. 05, 2023	Mar. 30, 2023	Jan. 06, 2023
Letter of Credit Subfacility
Debt [Line Items]
Long-term debt, gross		$ 2,000
Uncommitted Incremental Facility
Debt [Line Items]
Long-term debt, gross		$ 1,000
364-Day 2023 Tranche Loans
Debt [Line Items]
Long-term debt, gross	$ 125
364-Day 2023 Tranche Loans | SOFR
Debt [Line Items]
Credit spread adjustment	0.10%
Basis spread on variable rate	1.375%
364-Day 2023 Tranche Loans | Base Rate
Debt [Line Items]
Basis spread on variable rate	0.375%
First Mortgage Bonds Due 2033
Debt [Line Items]
Debt instrument, face amount			$ 1,150		$ 750
Interest rate			6.40%		6.15%
First Mortgage Bonds Due 2053
Debt [Line Items]
Debt instrument, face amount			$ 500	$ 750	$ 750
Interest rate			6.75%	6.70%	6.75%
First Mortgage Bonds, Stated Maturity 2029
Debt [Line Items]
Debt instrument, face amount			$ 850
Interest rate			6.10%
First Mortgage Bonds, Stated Maturity 2023
Debt [Line Items]
Debt instrument, face amount			$ 375
Interest rate			3.25%
First Mortgage Bonds Due 2023
Debt [Line Items]
Debt instrument, face amount			$ 500
Interest rate			4.25%