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WILDFIRE- RELATED CONTINGENCIES (Restructuring Support Agreement) (Details) - USD ($)
$ in Millions
Jan. 18, 2022
Jan. 15, 2021
Jul. 01, 2020
Jun. 12, 2020
Loss Contingencies [Line Items]        
Payment of plan of reorganization, tax benefits payment agreement   $ 758    
Fire Victim Trust        
Loss Contingencies [Line Items]        
Cash contribution by company     $ 5,400  
Percentage of common stock owned, Fire Victim Trust if common issues additional shares       22.19%
Pacific Gas & Electric Co (Utility)        
Loss Contingencies [Line Items]        
Plan of reorganization, future tax benefits payment agreement     $ 1,350  
Pacific Gas & Electric Co (Utility) | On Or Before January 15, 2022 | Subsequent Event        
Loss Contingencies [Line Items]        
Cash $ 592