v3.26.3
GENERAL INFORMATION AND OTHER FINANCIAL DATA - OTHER INCOME (EXPENSE), NET (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Other Income [Line Items]        
AFUDC equity $ 37 $ 43 $ 117 $ 130
Investment gains, net (18) 22 8 47
Gains (losses) on foreign exchange instruments, net 3 (1) (29) (2)
Foreign currency transaction gains, net 1 4 7 10
Non-service components of net periodic benefit cost 16 (40) 62 (48)
Interest on regulatory balancing accounts, net 18 29 60 70
Sundry, net 1 (8) 0 (8)
Total 58 49 225 199
San Diego Gas and Electric Company        
Other Income [Line Items]        
AFUDC equity 17 19 50 61
Non-service components of net periodic benefit cost (2) (3) 8 1
Interest on regulatory balancing accounts, net 10 18 35 44
Sundry, net (1) (2) (7) (3)
Total 24 32 86 103
Southern California Gas Company        
Other Income [Line Items]        
AFUDC equity 20 17 50 53
Non-service components of net periodic benefit cost 20 (28) 62 (34)
Interest on regulatory balancing accounts, net 8 11 25 26
Sundry, net (3) (3) (8) (8)
Total $ 45 $ (3) $ 129 $ 37