EMPLOYEE BENEFIT PLANS - NET PERIODIC BENEFIT COST AND AMOUNTS RECOGNIZED IN OCI (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Pension Plan
NET PERIODIC BENEFIT COST
Service cost	$ 127	$ 132	$ 109
Interest cost	176	166	157
Expected return on plan assets	(175)	(178)	(169)
Prior service cost (credit)	4	5	5
Actuarial loss (gain)	12	14	10
Settlement charges	26	9	0
Special termination benefits	0	0	0
Net periodic benefit cost (credit)	170	148	112
Regulatory adjustment	97	100	117
Total expense (income) recognized	267	248	229
CHANGES IN PLAN ASSETS AND BENEFIT OBLIGATIONS RECOGNIZED IN OCI
Net loss (gain)	6	(2)	42
Prior service cost	0	3	4
Amortization of actuarial (loss) gain	(7)	(7)	(5)
Amortization of prior service cost	(2)	(3)	(2)
Settlements	(16)	(9)	0
Total recognized in OCI	(19)	(18)	39
Total recognized in net periodic benefit cost and OCI	248	230	268
Pension Plan | SDG&E
NET PERIODIC BENEFIT COST
Service cost	38	39	32
Interest cost	46	43	40
Expected return on plan assets	(46)	(45)	(39)
Prior service cost (credit)	0	1	1
Actuarial loss (gain)	4	8	4
Settlement charges	11	0	0
Special termination benefits	0	0	0
Net periodic benefit cost (credit)	53	46	38
Regulatory adjustment	(2)	(8)	15
Total expense (income) recognized	51	38	53
CHANGES IN PLAN ASSETS AND BENEFIT OBLIGATIONS RECOGNIZED IN OCI
Net loss (gain)	2	4	3
Transfer of actuarial gain	(7)	0	0
Amortization of actuarial (loss) gain	(1)	(1)	0
Amortization of prior service cost	0	0	(1)
Total recognized in OCI	(6)	3	2
Total recognized in net periodic benefit cost and OCI	45	41	55
Pension Plan | SoCalGas
NET PERIODIC BENEFIT COST
Service cost	75	79	65
Interest cost	112	105	101
Expected return on plan assets	(118)	(121)	(119)
Prior service cost (credit)	4	4	4
Actuarial loss (gain)	2	1	1
Settlement charges	10	0	0
Special termination benefits	0	0	0
Net periodic benefit cost (credit)	85	68	52
Regulatory adjustment	99	108	102
Total expense (income) recognized	184	176	154
CHANGES IN PLAN ASSETS AND BENEFIT OBLIGATIONS RECOGNIZED IN OCI
Net loss (gain)	2	4	2
Prior service cost	0	2	0
Amortization of actuarial (loss) gain	(1)	(1)	(1)
Amortization of prior service cost	(1)	(1)	(1)
Settlements	(10)	0	0
Total recognized in OCI	(10)	4	0
Total recognized in net periodic benefit cost and OCI	174	180	154
Other Postretirement Benefits Plan
NET PERIODIC BENEFIT COST
Service cost	13	15	13
Interest cost	39	36	37
Expected return on plan assets	(66)	(70)	(69)
Prior service cost (credit)	(3)	(2)	(2)
Actuarial loss (gain)	(12)	(17)	(23)
Settlement charges	0	0	0
Special termination benefits	40	0	0
Net periodic benefit cost (credit)	11	(38)	(44)
Regulatory adjustment	4	38	43
Total expense (income) recognized	15	0	(1)
CHANGES IN PLAN ASSETS AND BENEFIT OBLIGATIONS RECOGNIZED IN OCI
Net loss (gain)	(1)	(1)	(2)
Prior service cost	0	0	0
Amortization of actuarial (loss) gain	1	1	2
Amortization of prior service cost	0	0	0
Settlements	0	0	0
Total recognized in OCI	0	0	0
Total recognized in net periodic benefit cost and OCI	15	0	(1)
Other Postretirement Benefits Plan | SDG&E
NET PERIODIC BENEFIT COST
Service cost	2	3	3
Interest cost	8	7	8
Expected return on plan assets	(7)	(9)	(8)
Prior service cost (credit)	0	0	0
Actuarial loss (gain)	(2)	(1)	(2)
Settlement charges	0	0	0
Special termination benefits	17	0	0
Net periodic benefit cost (credit)	18	0	1
Regulatory adjustment	(2)	0	0
Total expense (income) recognized	16	0	1
Other Postretirement Benefits Plan | SoCalGas
NET PERIODIC BENEFIT COST
Service cost	10	11	9
Interest cost	30	27	28
Expected return on plan assets	(57)	(59)	(59)
Prior service cost (credit)	(3)	(3)	(2)
Actuarial loss (gain)	(9)	(14)	(19)
Settlement charges	0	0	0
Special termination benefits	23	0	0
Net periodic benefit cost (credit)	(6)	(38)	(43)
Regulatory adjustment	6	38	43
Total expense (income) recognized	$ 0	$ 0	$ 0