v3.4.0.3
COMMITMENTS AND CONTINGENCIES - LEGAL PROCEEDINGS (Details)
$ in Thousands
 3 Months Ended
Apr. 28, 2016
Mar. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
 [1]
Loss Contingencies [Line Items]      
Loss Contingency Accrual, at Carrying Value   $ 37,000  
Reserve for Aliso Canyon costs   302,000 $ 274,000
Insurance receivable for Aliso Canyon costs   660,000 325,000
San Diego Gas and Electric Company [Member]      
Loss Contingencies [Line Items]      
Loss Contingency Accrual, at Carrying Value   29,000  
Southern California Gas Company [Member]      
Loss Contingencies [Line Items]      
Loss Contingency Accrual, at Carrying Value   6,000  
Reserve for Aliso Canyon costs   302,000 274,000
Insurance receivable for Aliso Canyon costs   660,000 $ 325,000
Wildfire [Member] | San Diego Gas and Electric Company [Member]      
Loss Contingencies [Line Items]      
Regulatory Assets Arising From Wildfire Litigation Costs   363,000  
Potential After-Tax Charge for Nonrecovery of CPUC Regulatory Assets   213,000  
Portion of Regulatory Assets Arising From Wildfire Litigation Related To CPUC Operations   360,000  
Aliso Canyon Natural Gas Storage Facility Gas Leak [Member] | Southern California Gas Company [Member]      
Loss Contingencies [Line Items]      
Loss Contingency Accrual, at Carrying Value   665,000  
Liability Insurance Coverage, Maximum   1,000,000  
Loss Contingency, Number Of Lawsuits 138    
Number Of Lawsuits Filed In Los Angeles County 134    
Number Of Lawsuits Filed In San Diego County 2    
Number Of Lawsuits Filed In US District Court Of Southern District Of California 2    
Maximum Occupational Safety And Health Penalties   280  
Civil Penalties Per Day   $ 250  
Proportion Of Total Gas Storage Capacity, Percentage   63.00%  
Net Book Value Of Aliso Canyon Facility   $ 415,000  
Construction Work In Progress Of New Compressor Station   $ 180,000  
Estimated Costs Related To Temporary Relocation Percentage   70.00%  
Estimated Costs Related To Controlling Well And Stopping Leak And Emissions Percentage   15.00%  
[1] Derived from audited financial statements.