SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - VIE (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Nov. 30, 2022	Jul. 20, 2022	May 10, 2022	Nov. 12, 2021
Receivables Securitization Program | PG&E AR Facility, LLC (SPV)
Public Utility, Property, Plant and Equipment [Line Items]
Accounts receivable, net	$ 2,700	$ 3,600
Receivables Securitization Program | Pacific Gas & Electric Co (Utility)
Public Utility, Property, Plant and Equipment [Line Items]
Long-term debt, gross	1,499	1,200
Recovery Bonds | Secured Debt
Public Utility, Property, Plant and Equipment [Line Items]
Long-term debt, gross	9,124	9,292
Debt instrument, face amount	1,800	1,800				$ 860
Series 2022-A Recovery Bonds
Public Utility, Property, Plant and Equipment [Line Items]
Debt instrument, face amount			$ 983
SB 901 Securitization | Secured Debt
Public Utility, Property, Plant and Equipment [Line Items]
Debt instrument, face amount	$ 7,300	$ 7,500		$ 3,900	$ 3,600