v3.26.1
GENERAL INFORMATION AND OTHER FINANCIAL DATA - PENSION AND OTHER POSTRETIREMENT BENEFITS (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Pension        
Defined Benefit Plan Disclosure [Line Items]        
Service cost $ 33 $ 32 $ 67 $ 64
Interest cost 44 45 89 90
Expected return on assets (45) (44) (90) (89)
Amortization of:        
Prior service cost 1 1 2 2
Actuarial loss (gain) 3 3 4 6
Settlement charges     0 4
Special termination benefits 0 0 0 0
Net periodic benefit cost (credit) 36 37 72 77
Regulatory adjustments (16) 27 (44) (1)
Total expense recognized 20 64 28 76
Pension | SDG&E        
Defined Benefit Plan Disclosure [Line Items]        
Service cost 11 10 21 19
Interest cost 12 12 24 24
Expected return on assets (13) (12) (26) (24)
Amortization of:        
Actuarial loss (gain) 0 0 1 2
Special termination benefits 0 0 0 0
Net periodic benefit cost (credit) 10 10 20 21
Regulatory adjustments 2 2 (8) (8)
Total expense recognized 12 12 12 13
Pension | SoCalGas        
Defined Benefit Plan Disclosure [Line Items]        
Service cost 20 19 39 38
Interest cost 28 28 56 56
Expected return on assets (28) (29) (58) (59)
Amortization of:        
Prior service cost 0 1 1 2
Actuarial loss (gain) 0 0 0 1
Settlement charges     0 4
Special termination benefits 0 0 0 0
Net periodic benefit cost (credit) 20 19 38 42
Regulatory adjustments (18) 25 (36) 7
Total expense recognized 2 44 2 49
PBOP        
Defined Benefit Plan Disclosure [Line Items]        
Service cost 4 4 7 7
Interest cost 11 9 22 19
Expected return on assets (19) (17) (37) (33)
Amortization of:        
Prior service cost 0 0 (1) (1)
Actuarial loss (gain) (2) (3) (5) (6)
Settlement charges     0 0
Special termination benefits 1 40 19 40
Net periodic benefit cost (credit) (5) 33 5 26
Regulatory adjustments 5 (30) (5) (23)
Total expense recognized 0 3 0 3
PBOP | SDG&E        
Defined Benefit Plan Disclosure [Line Items]        
Service cost 0 0 1 1
Interest cost 2 2 4 4
Expected return on assets (1) (2) (4) (4)
Amortization of:        
Actuarial loss (gain) (1) 0 (1) (1)
Special termination benefits 2 17 8 17
Net periodic benefit cost (credit) 2 17 8 17
Regulatory adjustments (2) (14) (8) (14)
Total expense recognized 0 3 0 3
PBOP | SoCalGas        
Defined Benefit Plan Disclosure [Line Items]        
Service cost 3 2 5 5
Interest cost 9 8 17 15
Expected return on assets (16) (15) (31) (29)
Amortization of:        
Prior service cost 0 0 (1) (1)
Actuarial loss (gain) (2) (2) (4) (4)
Settlement charges     0 0
Special termination benefits (1)      
Special termination benefits   23 11 23
Net periodic benefit cost (credit) (7) 16 (3) 9
Regulatory adjustments 7 (16) 3 (9)
Total expense recognized $ 0 $ 0 $ 0 $ 0