SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - VIE (Details) $ in Millions	Jun. 30, 2025 USD ($) recoveryBond	Dec. 31, 2024 USD ($)	Aug. 01, 2024 USD ($)	Nov. 30, 2022 USD ($)	Jul. 20, 2022 USD ($)	May 10, 2022 USD ($)	Nov. 12, 2021 USD ($)
Public Utility, Property, Plant and Equipment [Line Items]
Number of recovery bonds issued | recoveryBond	3
Receivables Securitization Program | PG&E AR Facility, LLC (SPV)
Public Utility, Property, Plant and Equipment [Line Items]
Accounts receivable, net	$ 3,300	$ 3,200
Receivables Securitization Program | Utility
Public Utility, Property, Plant and Equipment [Line Items]
Long-term debt, gross	190	0
Recovery Bonds | Secured Debt
Public Utility, Property, Plant and Equipment [Line Items]
Debt instrument, face amount	3,100	3,200	$ 1,420	$ 983			$ 860
SB 901 securitization | Secured Debt
Public Utility, Property, Plant and Equipment [Line Items]
Debt instrument, face amount	$ 7,100	$ 7,200			$ 3,900	$ 3,600