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OTHER CONTINGENCIES AND COMMITMENTS (Enforcement and Litigation Matters) (Details)
customer in Thousands, $ in Millions
Jan. 26, 2017
USD ($)
Oct. 14, 2019
county
customer
May 14, 2019
condition
Jan. 04, 2019
wildfire
Aug. 09, 2016
count
Loss Contingencies [Line Items]          
Number of wildfires (wildfire) | wildfire       18  
Pacific Gas & Electric Co | Judicial Ruling | Unfavorable Regulatory Action          
Loss Contingencies [Line Items]          
Number of guilty counts of obstructing a federal agency proceeding         1
Number of guilty counts of violating pipeline integrity management regulations         5
Corporate probation period, term 5 years        
Oversight by third-party monitor period, application for early termination, term 3 years        
Damages awarded, value | $ $ 3        
Number of additional probation conditions (condition) | condition     2    
Subsequent event | Potential Power Shut Off          
Loss Contingencies [Line Items]          
Number of customers | customer   738      
Number of counties | county   34