EMPLOYEE BENEFIT PLANS - PROJECTED BENEFIT OBLIGATION, FAIR VALUE OF ASSETS AND FUNDED STATUS (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
CHANGE IN BENEFIT OBLIGATION
Transfer of liability from other plans	$ 6
Pension Plan
CHANGE IN BENEFIT OBLIGATION
Obligation at January 1	3,139	$ 3,107
Service cost	127	132	$ 109
Interest cost	176	166	157
Contributions from plan participants	0	0
Actuarial loss (gain)	80	(100)
Plan amendments	0	2
Benefit payments	(85)	(81)
Special termination benefits	0	0
Settlements	(290)	(87)
Reclassification to liabilities held for sale	(24)	0
Obligation at December 31	3,123	3,139	3,107
CHANGE IN PLAN ASSETS
Fair value of plan assets at January 1	2,935	2,664
Actual return on plan assets	272	196
Employer contributions	278	243
Contributions from plan participants	0	0
Benefit payments	(85)	(81)
Settlements	(290)	(87)
Fair value of plan assets at December 31	3,110	2,935	2,664
Defined Benefit Plan, Funded (Unfunded) Status of Plan [Abstract]
Funded status at December 31	(13)	(204)
Net recorded asset (liability) at December 31	(13)	(204)
Accumulated benefit obligation	2,868	2,900
Pension Plan | SDG&E
CHANGE IN BENEFIT OBLIGATION
Obligation at January 1	822	807
Service cost	38	39	32
Interest cost	46	43	40
Contributions from plan participants	0	0
Actuarial loss (gain)	39	(28)
Benefit payments	(18)	(16)
Special termination benefits	0	0
Settlements	(86)	(23)
Transfer of liability from other plans	(13)	0
Obligation at December 31	828	822	807
CHANGE IN PLAN ASSETS
Fair value of plan assets at January 1	787	726
Actual return on plan assets	73	63
Employer contributions	51	37
Contributions from plan participants	0	0
Benefit payments	(18)	(16)
Settlements	(86)	(23)
Fair value of plan assets at December 31	807	787	726
Defined Benefit Plan, Funded (Unfunded) Status of Plan [Abstract]
Funded status at December 31	(21)	(35)
Net recorded asset (liability) at December 31	(21)	(35)
Accumulated benefit obligation	770	781
Pension Plan | SoCalGas
CHANGE IN BENEFIT OBLIGATION
Obligation at January 1	1,999	1,977
Service cost	75	79	65
Interest cost	112	105	101
Contributions from plan participants	0	0
Actuarial loss (gain)	29	(70)
Plan amendments	0	2
Benefit payments	(59)	(56)
Special termination benefits	0	0
Settlements	(178)	(38)
Obligation at December 31	1,978	1,999	1,977
CHANGE IN PLAN ASSETS
Fair value of plan assets at January 1	1,937	1,744
Actual return on plan assets	179	115
Employer contributions	195	172
Contributions from plan participants	0	0
Benefit payments	(59)	(56)
Settlements	(178)	(38)
Fair value of plan assets at December 31	2,074	1,937	1,744
Defined Benefit Plan, Funded (Unfunded) Status of Plan [Abstract]
Funded status at December 31	96	(62)
Net recorded asset (liability) at December 31	96	(62)
Accumulated benefit obligation	1,801	1,824
Other Postretirement Benefits Plan
CHANGE IN BENEFIT OBLIGATION
Obligation at January 1	687	693
Service cost	13	15	13
Interest cost	39	36	37
Contributions from plan participants	28	23
Actuarial loss (gain)	35	(11)
Plan amendments	0	0
Benefit payments	(80)	(69)
Special termination benefits	40	0
Settlements	0	0
Reclassification to liabilities held for sale	0	0
Obligation at December 31	762	687	693
CHANGE IN PLAN ASSETS
Fair value of plan assets at January 1	1,185	1,169
Actual return on plan assets	125	57
Employer contributions	15	5
Contributions from plan participants	28	23
Benefit payments	(80)	(69)
Settlements	0	0
Fair value of plan assets at December 31	1,273	1,185	1,169
Defined Benefit Plan, Funded (Unfunded) Status of Plan [Abstract]
Funded status at December 31	511	498
Net recorded asset (liability) at December 31	511	498
Other Postretirement Benefits Plan | SDG&E
CHANGE IN BENEFIT OBLIGATION
Obligation at January 1	134	140
Service cost	2	3	3
Interest cost	8	7	8
Contributions from plan participants	10	8
Actuarial loss (gain)	5	(6)
Benefit payments	(23)	(18)
Special termination benefits	17	0
Settlements	0	0
Transfer of liability from other plans	0	0
Obligation at December 31	153	134	140
CHANGE IN PLAN ASSETS
Fair value of plan assets at January 1	145	150
Actual return on plan assets	13	5
Employer contributions	13	0
Contributions from plan participants	10	8
Benefit payments	(23)	(18)
Settlements	0	0
Fair value of plan assets at December 31	158	145	150
Defined Benefit Plan, Funded (Unfunded) Status of Plan [Abstract]
Funded status at December 31	5	11
Net recorded asset (liability) at December 31	5	11
Other Postretirement Benefits Plan | SoCalGas
CHANGE IN BENEFIT OBLIGATION
Obligation at January 1	522	521
Service cost	10	11	9
Interest cost	30	27	28
Contributions from plan participants	17	14
Actuarial loss (gain)	28	(4)
Plan amendments	0	0
Benefit payments	(53)	(47)
Special termination benefits	23	0
Settlements	0	0
Obligation at December 31	577	522	521
CHANGE IN PLAN ASSETS
Fair value of plan assets at January 1	1,008	990
Actual return on plan assets	107	50
Employer contributions	1	1
Contributions from plan participants	17	14
Benefit payments	(53)	(47)
Settlements	0	0
Fair value of plan assets at December 31	1,080	1,008	$ 990
Defined Benefit Plan, Funded (Unfunded) Status of Plan [Abstract]
Funded status at December 31	503	486
Net recorded asset (liability) at December 31	$ 503	$ 486