WILDFIRE- RELATED CONTINGENCIES (Restructuring Support Agreement) (Details) - USD ($) $ in Millions	Jun. 12, 2020	Dec. 06, 2019
Fire Victim Trust
Loss Contingencies [Line Items]
Percentage of common stock owned, Fire Victim Trust if common issues additional shares	22.19%
Pacific Gas & Electric Co (Utility)
Loss Contingencies [Line Items]
Cash		$ 1,350
Pacific Gas & Electric Co (Utility) | Effective Date
Loss Contingencies [Line Items]
Cash contribution by company		5,400
Pacific Gas & Electric Co (Utility) | On Or Before January 15, 2021
Loss Contingencies [Line Items]
Cash		758
Pacific Gas & Electric Co (Utility) | On Or Before January 15, 2022
Loss Contingencies [Line Items]
Cash		$ 592