EMPLOYEE BENEFIT PLANS - NET PERIODIC BENEFIT COST AND AMOUNTS RECOGNIZED IN OCI (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Pension Plan
NET PERIODIC BENEFIT COST
Service cost	$ 132	$ 109	$ 146
Interest cost	166	157	118
Expected return on plan assets	(178)	(169)	(183)
Prior service cost (credit)	5	5	10
Actuarial loss (gain)	14	10	25
Settlement charges	9	0	28
Net periodic benefit cost (credit)	148	112	144
Regulatory adjustment	100	117	84
Total expense (income) recognized	248	229	228
CHANGES IN PLAN ASSETS AND BENEFIT OBLIGATIONS RECOGNIZED IN OCI
Net (gain) loss	(2)	42	12
Prior service cost	3	4	0
Amortization of actuarial (loss) gain	(7)	(5)	(8)
Amortization of prior service cost	(3)	(2)	(4)
Settlements	(9)	0	0
Total recognized in OCI	(18)	39	0
Total recognized in net periodic benefit cost and OCI	230	268	228
Pension Plan | SDG&E
NET PERIODIC BENEFIT COST
Service cost	39	32	37
Interest cost	43	40	26
Expected return on plan assets	(45)	(39)	(46)
Prior service cost (credit)	1	1	1
Actuarial loss (gain)	8	4	1
Settlement charges	0	0	14
Net periodic benefit cost (credit)	46	38	33
Regulatory adjustment	(8)	15	20
Total expense (income) recognized	38	53	53
CHANGES IN PLAN ASSETS AND BENEFIT OBLIGATIONS RECOGNIZED IN OCI
Net (gain) loss	4	3	(3)
Amortization of actuarial (loss) gain	(1)	0	(1)
Amortization of prior service cost	0	(1)	0
Total recognized in OCI	3	2	(4)
Total recognized in net periodic benefit cost and OCI	41	55	49
Pension Plan | SoCalGas
NET PERIODIC BENEFIT COST
Service cost	79	65	96
Interest cost	105	101	81
Expected return on plan assets	(121)	(119)	(126)
Prior service cost (credit)	4	4	8
Actuarial loss (gain)	1	1	18
Settlement charges	0	0	14
Net periodic benefit cost (credit)	68	52	91
Regulatory adjustment	108	102	64
Total expense (income) recognized	176	154	155
CHANGES IN PLAN ASSETS AND BENEFIT OBLIGATIONS RECOGNIZED IN OCI
Net (gain) loss	4	2	(5)
Prior service cost	2	0	0
Amortization of actuarial (loss) gain	(1)	(1)	(2)
Amortization of prior service cost	(1)	(1)	(1)
Total recognized in OCI	4	0	(8)
Total recognized in net periodic benefit cost and OCI	180	154	147
Other Postretirement Benefits Plan
NET PERIODIC BENEFIT COST
Service cost	15	13	23
Interest cost	36	37	28
Expected return on plan assets	(70)	(69)	(64)
Prior service cost (credit)	(2)	(2)	(2)
Actuarial loss (gain)	(17)	(23)	(15)
Settlement charges	0	0	0
Net periodic benefit cost (credit)	(38)	(44)	(30)
Regulatory adjustment	38	43	30
Total expense (income) recognized	0	(1)	0
CHANGES IN PLAN ASSETS AND BENEFIT OBLIGATIONS RECOGNIZED IN OCI
Net (gain) loss	(1)	(2)	(4)
Prior service cost	0	0	0
Amortization of actuarial (loss) gain	1	2	1
Amortization of prior service cost	0	0	0
Settlements	0	0	0
Total recognized in OCI	0	0	(3)
Total recognized in net periodic benefit cost and OCI	0	(1)	(3)
Other Postretirement Benefits Plan | SDG&E
NET PERIODIC BENEFIT COST
Service cost	3	3	5
Interest cost	7	8	6
Expected return on plan assets	(9)	(8)	(10)
Prior service cost (credit)	0	0	0
Actuarial loss (gain)	(1)	(2)	(2)
Settlement charges	0	0	0
Net periodic benefit cost (credit)	0	1	(1)
Regulatory adjustment	0	0	1
Total expense (income) recognized	0	1	0
Other Postretirement Benefits Plan | SoCalGas
NET PERIODIC BENEFIT COST
Service cost	11	9	17
Interest cost	27	28	21
Expected return on plan assets	(59)	(59)	(53)
Prior service cost (credit)	(3)	(2)	(2)
Actuarial loss (gain)	(14)	(19)	(12)
Settlement charges	0	0	0
Net periodic benefit cost (credit)	(38)	(43)	(29)
Regulatory adjustment	38	43	29
Total expense (income) recognized	$ 0	$ 0	$ 0