SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - VIE (Details) ft² in Thousands	Mar. 31, 2025 USD ($) ft² recoveryBond	Dec. 31, 2024 USD ($)	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
Utility | The Lakeside Building
Public Utility, Property, Plant and Equipment [Line Items]
Rentable square feet | ft²	910
Receivables Securitization Program | PG&E AR Facility, LLC (SPV)
Public Utility, Property, Plant and Equipment [Line Items]
Accounts receivable, net	$ 3,100,000,000	$ 3,200,000,000
Receivables Securitization Program | Utility
Public Utility, Property, Plant and Equipment [Line Items]
Long-term debt, gross	0	0
Recovery Bonds | Secured Debt
Public Utility, Property, Plant and Equipment [Line Items]
Debt instrument, face amount	3,100,000,000	3,200,000,000	$ 1,420,000,000	$ 983,000,000			$ 860,000,000
SB 901 securitization | Secured Debt
Public Utility, Property, Plant and Equipment [Line Items]
Debt instrument, face amount	$ 7,200,000,000	$ 7,200,000,000			$ 3,900,000,000	$ 3,600,000,000