XML 110 R78.htm IDEA: XBRL DOCUMENT v3.10.0.1
REGULATORY MATTERS - REGULATORY ACCOUNTS (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Schedule Of Net Regulatory Assets (Liabilities) [Line Items]      
Amortization expense on regulatory assets $ 5 $ 50 $ 65
Net Regulatory Assets (Liabilities) Sempra Energy Consolidated [Member]      
Schedule Of Net Regulatory Assets (Liabilities) [Line Items]      
Net regulatory assets (liabilities) (2,394) (2,189)  
San Diego Gas and Electric Company [Member]      
Schedule Of Net Regulatory Assets (Liabilities) [Line Items]      
Regulatory balancing accounts - net undercollected, Noncurrent 78 63  
Amortization expense on regulatory assets 2 49 63
San Diego Gas and Electric Company [Member] | Fixed-price contracts and other derivatives [Member]      
Schedule Of Net Regulatory Assets (Liabilities) [Line Items]      
Net regulatory assets (liabilities) (150) 96  
San Diego Gas and Electric Company [Member] | Deferred income taxes (refundable) recoverable in rates [Member]      
Schedule Of Net Regulatory Assets (Liabilities) [Line Items]      
Net regulatory assets (liabilities) (236) (281)  
San Diego Gas and Electric Company [Member] | Pension and other postretirement benefit plan obligations [Member]      
Schedule Of Net Regulatory Assets (Liabilities) [Line Items]      
Net regulatory assets (liabilities) 186 153  
San Diego Gas and Electric Company [Member] | Removal obligations [Member]      
Schedule Of Net Regulatory Assets (Liabilities) [Line Items]      
Net regulatory assets (liabilities) (1,848) (1,846)  
San Diego Gas and Electric Company [Member] | Unamortized loss on reacquired debt [Member]      
Schedule Of Net Regulatory Assets (Liabilities) [Line Items]      
Net regulatory assets (liabilities) $ 7 9  
San Diego Gas and Electric Company [Member] | Unamortized loss on reacquired debt [Member] | Minimum [Member]      
Schedule Of Net Regulatory Assets (Liabilities) [Line Items]      
Remaining amortization period 1 year    
San Diego Gas and Electric Company [Member] | Unamortized loss on reacquired debt [Member] | Maximum [Member]      
Schedule Of Net Regulatory Assets (Liabilities) [Line Items]      
Remaining amortization period 9 years    
San Diego Gas and Electric Company [Member] | Environmental costs [Member]      
Schedule Of Net Regulatory Assets (Liabilities) [Line Items]      
Net regulatory assets (liabilities) $ 28 29  
San Diego Gas and Electric Company [Member] | Sunrise Powerlink fire mitigation [Member]      
Schedule Of Net Regulatory Assets (Liabilities) [Line Items]      
Net regulatory assets (liabilities) $ 120 119  
Remaining amortization period 51    
San Diego Gas and Electric Company [Member] | Regulatory Balancing Accounts, Commodity – electric [Member]      
Schedule Of Net Regulatory Assets (Liabilities) [Line Items]      
Net regulatory assets (liabilities) $ (8) 82  
San Diego Gas and Electric Company [Member] | Regulatory Balancing Accounts, Gas transportation [Member]      
Schedule Of Net Regulatory Assets (Liabilities) [Line Items]      
Net regulatory assets (liabilities) 45 22  
San Diego Gas and Electric Company [Member] | Regulatory Balancing Accounts, Safety and reliability [Member]      
Schedule Of Net Regulatory Assets (Liabilities) [Line Items]      
Net regulatory assets (liabilities) 70 48  
San Diego Gas and Electric Company [Member] | Regulatory Balancing Accounts, Public purpose programs [Member]      
Schedule Of Net Regulatory Assets (Liabilities) [Line Items]      
Net regulatory assets (liabilities) (62) (70)  
San Diego Gas and Electric Company [Member] | Regulatory Balancing Accounts, Other balancing accounts [Member]      
Schedule Of Net Regulatory Assets (Liabilities) [Line Items]      
Net regulatory assets (liabilities) 145 233  
San Diego Gas and Electric Company [Member] | Other regulatory (liabilities) assets [Member]      
Schedule Of Net Regulatory Assets (Liabilities) [Line Items]      
Net regulatory assets (liabilities) (177) (70)  
San Diego Gas and Electric Company [Member] | Net Regulatory Assets (Liabilities) SDGE [Member]      
Schedule Of Net Regulatory Assets (Liabilities) [Line Items]      
Net regulatory assets (liabilities) (1,880) (1,476)  
Southern California Gas Company [Member]      
Schedule Of Net Regulatory Assets (Liabilities) [Line Items]      
Regulatory balancing accounts - net undercollected, Noncurrent 185 118  
Amortization expense on regulatory assets 3 1 $ 2
Southern California Gas Company [Member] | Deferred income taxes (refundable) recoverable in rates [Member]      
Schedule Of Net Regulatory Assets (Liabilities) [Line Items]      
Net regulatory assets (liabilities) (336) (437)  
Southern California Gas Company [Member] | Pension and other postretirement benefit plan obligations [Member]      
Schedule Of Net Regulatory Assets (Liabilities) [Line Items]      
Net regulatory assets (liabilities) 470 513  
Southern California Gas Company [Member] | Employee benefit costs [Member]      
Schedule Of Net Regulatory Assets (Liabilities) [Line Items]      
Net regulatory assets (liabilities) 49 45  
Southern California Gas Company [Member] | Removal obligations [Member]      
Schedule Of Net Regulatory Assets (Liabilities) [Line Items]      
Net regulatory assets (liabilities) (833) (924)  
Southern California Gas Company [Member] | Unamortized loss on reacquired debt [Member]      
Schedule Of Net Regulatory Assets (Liabilities) [Line Items]      
Net regulatory assets (liabilities) $ 7 8  
Southern California Gas Company [Member] | Unamortized loss on reacquired debt [Member] | Minimum [Member]      
Schedule Of Net Regulatory Assets (Liabilities) [Line Items]      
Remaining amortization period 3 years    
Southern California Gas Company [Member] | Unamortized loss on reacquired debt [Member] | Maximum [Member]      
Schedule Of Net Regulatory Assets (Liabilities) [Line Items]      
Remaining amortization period 7 years    
Southern California Gas Company [Member] | Environmental costs [Member]      
Schedule Of Net Regulatory Assets (Liabilities) [Line Items]      
Net regulatory assets (liabilities) $ 28 22  
Southern California Gas Company [Member] | Workers’ compensation [Member]      
Schedule Of Net Regulatory Assets (Liabilities) [Line Items]      
Net regulatory assets (liabilities) 9 12  
Southern California Gas Company [Member] | Regulatory Balancing Accounts, Commodity - gas including transportation      
Schedule Of Net Regulatory Assets (Liabilities) [Line Items]      
Net regulatory assets (liabilities) 196 151  
Southern California Gas Company [Member] | Regulatory Balancing Accounts, Safety and reliability [Member]      
Schedule Of Net Regulatory Assets (Liabilities) [Line Items]      
Net regulatory assets (liabilities) 332 266  
Southern California Gas Company [Member] | Regulatory Balancing Accounts, Public purpose programs [Member]      
Schedule Of Net Regulatory Assets (Liabilities) [Line Items]      
Net regulatory assets (liabilities) (325) (274)  
Southern California Gas Company [Member] | Regulatory Balancing Accounts, Other balancing accounts [Member]      
Schedule Of Net Regulatory Assets (Liabilities) [Line Items]      
Net regulatory assets (liabilities) (68) (114)  
Southern California Gas Company [Member] | Other regulatory (liabilities) assets [Member]      
Schedule Of Net Regulatory Assets (Liabilities) [Line Items]      
Net regulatory assets (liabilities) (130) (64)  
Southern California Gas Company [Member] | Net Regulatory Assets (Liabilities) SoCalGas [Member]      
Schedule Of Net Regulatory Assets (Liabilities) [Line Items]      
Net regulatory assets (liabilities) (601) (796)  
Sempra Mexico [Member] | Deferred income taxes (refundable) recoverable in rates [Member]      
Schedule Of Net Regulatory Assets (Liabilities) [Line Items]      
Net regulatory assets (liabilities) 81 83  
Sempra Mexico [Member] | Other Regulatory Assets [Member]      
Schedule Of Net Regulatory Assets (Liabilities) [Line Items]      
Net regulatory assets (liabilities) $ 6 $ 0