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RELATED PARTY AGREEMENTS AND TRANSACTIONS (Summary of Significant Related Party Transactions) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Related Party Transaction [Line Items]      
Utility reveneus $ 24,419 $ 24,428 $ 21,680
Utility expenses 19,960 21,757 19,843
Pacific Gas & Electric Co (Utility)      
Related Party Transaction [Line Items]      
Utility reveneus 24,419 24,428 21,680
Utility expenses 19,939 21,746 19,759
Pacific Gas & Electric Co (Utility) | Administrative services provided to PG&E Corporation | Related Party      
Related Party Transaction [Line Items]      
Utility reveneus 3 3 3
Pacific Gas & Electric Co (Utility) | Administrative services received from PG&E Corporation | Related Party      
Related Party Transaction [Line Items]      
Utility expenses 66 80 104
Pacific Gas & Electric Co (Utility) | Utility employee benefit due to PG&E Corporation | Related Party      
Related Party Transaction [Line Items]      
Utility expenses $ 81 $ 74 $ 85