EMPLOYEE BENEFIT PLANS - PROJECTED BENEFIT OBLIGATION, FAIR VALUE OF ASSETS AND FUNDED STATUS (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Pension Plan
CHANGE IN PROJECTED BENEFIT OBLIGATION
Obligation at January 1	$ 3,107	$ 2,806
Service cost	132	109	$ 146
Interest cost	166	157	118
Contributions from plan participants	0	0
Actuarial (gain) loss	(100)	190
Plan amendments	2	4
Benefit payments	(81)	(83)
Settlements	(87)	(76)
Obligation at December 31	3,139	3,107	2,806
CHANGE IN PLAN ASSETS
Fair value of plan assets at January 1	2,664	2,390
Actual return on plan assets	196	218
Employer contributions	243	215
Contributions from plan participants	0	0
Benefit payments	(81)	(83)
Settlements	(87)	(76)
Fair value of plan assets at December 31	2,935	2,664	2,390
Defined Benefit Plan, Funded (Unfunded) Status of Plan [Abstract]
Funded status at December 31	(204)	(443)
Net recorded (liability) asset at December 31	(204)	(443)
Accumulated benefit obligation	2,900	2,865
Pension Plan | SDG&E
CHANGE IN PROJECTED BENEFIT OBLIGATION
Obligation at January 1	807	714
Service cost	39	32	37
Interest cost	43	40	26
Contributions from plan participants	0	0
Actuarial (gain) loss	(28)	69
Benefit payments	(16)	(17)
Settlements	(23)	(31)
Obligation at December 31	822	807	714
CHANGE IN PLAN ASSETS
Fair value of plan assets at January 1	726	670
Actual return on plan assets	63	52
Employer contributions	37	52
Contributions from plan participants	0	0
Benefit payments	(16)	(17)
Settlements	(23)	(31)
Fair value of plan assets at December 31	787	726	670
Defined Benefit Plan, Funded (Unfunded) Status of Plan [Abstract]
Funded status at December 31	(35)	(81)
Net recorded (liability) asset at December 31	(35)	(81)
Accumulated benefit obligation	781	769
Pension Plan | SoCalGas
CHANGE IN PROJECTED BENEFIT OBLIGATION
Obligation at January 1	1,977	1,814
Service cost	79	65	96
Interest cost	105	101	81
Contributions from plan participants	0	0
Actuarial (gain) loss	(70)	90
Plan amendments	2	0
Benefit payments	(56)	(58)
Settlements	(38)	(35)
Obligation at December 31	1,999	1,977	1,814
CHANGE IN PLAN ASSETS
Fair value of plan assets at January 1	1,744	1,535
Actual return on plan assets	115	151
Employer contributions	172	151
Contributions from plan participants	0	0
Benefit payments	(56)	(58)
Settlements	(38)	(35)
Fair value of plan assets at December 31	1,937	1,744	1,535
Defined Benefit Plan, Funded (Unfunded) Status of Plan [Abstract]
Funded status at December 31	(62)	(233)
Net recorded (liability) asset at December 31	(62)	(233)
Accumulated benefit obligation	1,824	1,799
Other Postretirement Benefits Plan
CHANGE IN PROJECTED BENEFIT OBLIGATION
Obligation at January 1	693	663
Service cost	15	13	23
Interest cost	36	37	28
Contributions from plan participants	23	23
Actuarial (gain) loss	(11)	28
Plan amendments	0	0
Benefit payments	(69)	(71)
Settlements	0	0
Obligation at December 31	687	693	663
CHANGE IN PLAN ASSETS
Fair value of plan assets at January 1	1,169	1,096
Actual return on plan assets	57	117
Employer contributions	5	4
Contributions from plan participants	23	23
Benefit payments	(69)	(71)
Settlements	0	0
Fair value of plan assets at December 31	1,185	1,169	1,096
Defined Benefit Plan, Funded (Unfunded) Status of Plan [Abstract]
Funded status at December 31	498	476
Net recorded (liability) asset at December 31	498	476
Other Postretirement Benefits Plan | SDG&E
CHANGE IN PROJECTED BENEFIT OBLIGATION
Obligation at January 1	140	134
Service cost	3	3	5
Interest cost	7	8	6
Contributions from plan participants	8	8
Actuarial (gain) loss	(6)	7
Benefit payments	(18)	(20)
Settlements	0	0
Obligation at December 31	134	140	134
CHANGE IN PLAN ASSETS
Fair value of plan assets at January 1	150	147
Actual return on plan assets	5	14
Employer contributions	0	1
Contributions from plan participants	8	8
Benefit payments	(18)	(20)
Settlements	0	0
Fair value of plan assets at December 31	145	150	147
Defined Benefit Plan, Funded (Unfunded) Status of Plan [Abstract]
Funded status at December 31	11	10
Net recorded (liability) asset at December 31	11	10
Other Postretirement Benefits Plan | SoCalGas
CHANGE IN PROJECTED BENEFIT OBLIGATION
Obligation at January 1	521	497
Service cost	11	9	17
Interest cost	27	28	21
Contributions from plan participants	14	14
Actuarial (gain) loss	(4)	21
Plan amendments	0	0
Benefit payments	(47)	(48)
Settlements	0	0
Obligation at December 31	522	521	497
CHANGE IN PLAN ASSETS
Fair value of plan assets at January 1	990	923
Actual return on plan assets	50	100
Employer contributions	1	1
Contributions from plan participants	14	14
Benefit payments	(47)	(48)
Settlements	0	0
Fair value of plan assets at December 31	1,008	990	$ 923
Defined Benefit Plan, Funded (Unfunded) Status of Plan [Abstract]
Funded status at December 31	486	469
Net recorded (liability) asset at December 31	$ 486	$ 469