SEGMENT INFORMATION - Schedule of Segment Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Segment Reporting, Revenue Reconciling Item [Line Items]
Electric	$ 4,552	$ 4,296	$ 4,334
Natural gas	7,319	7,141	9,495
Revenues from contracts with customers	12,418	11,818	14,848
Operation and maintenance	(5,281)	(5,336)	(5,458)
Interest income	103	61	89
Interest expense	(1,532)	(1,049)	(1,309)
Income tax expense	(701)	(219)	(490)
Earnings attributable to common shares	1,796	2,817	3,030
CAPITAL EXPENDITURES FOR PROPERTY, PLANT AND EQUIPMENT	10,612	8,215	8,397
SDG&E
Segment Reporting, Revenue Reconciling Item [Line Items]
Electric	4,568	4,313	4,349
Natural gas	1,129	1,028	1,248
Revenues from contracts with customers	5,165	5,042	5,954
Total operating revenues	5,697	5,341	5,597
Depreciation and amortization	(1,316)	(1,223)	(1,098)
Interest income	2	5	15
Interest expense	(559)	(525)	(497)
Income tax expense	128	(153)	26
Earnings attributable to common shares	563	891	936
SoCalGas
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues from contracts with customers	6,459	6,134	7,857
Total operating revenues	6,291	6,209	8,289
Depreciation and amortization	(1,016)	(910)	(839)
Interest income	6	9	9
Interest expense	(367)	(323)	(285)
Income tax expense	38	(31)	5
Earnings attributable to common shares	865	955	811
Reportable Segment | SDG&E
Segment Reporting, Revenue Reconciling Item [Line Items]
Electric	4,122	4,164	4,750
Natural gas	1,043	878	1,204
Revenues from contracts with customers	5,165	5,042	5,954
Total other revenues	532	299	(357)
Total operating revenues	5,697	5,341	5,597
Operation and maintenance	(1,725)	(1,692)	(1,846)
Depreciation and amortization	(1,316)	(1,223)	(1,098)
Interest income	2	5	15
Interest expense	(559)	(525)	(497)
Income tax expense	128	(153)	26
Other segment items	(1,664)	(862)	(1,261)
Earnings attributable to common shares	563	891	936
CAPITAL EXPENDITURES FOR PROPERTY, PLANT AND EQUIPMENT	2,427	2,522	2,540
Reportable Segment | SDG&E | Electric, Non-Nuclear
Segment Reporting, Revenue Reconciling Item [Line Items]
Utilities	446	149	(401)
Reportable Segment | SDG&E | Natural Gas
Segment Reporting, Revenue Reconciling Item [Line Items]
Utilities	86	150	44
Reportable Segment | SoCalGas
Segment Reporting, Revenue Reconciling Item [Line Items]
Natural gas	6,459	6,134	7,857
Total other revenues	(168)	75	432
Total operating revenues	6,291	6,209	8,289
Operation and maintenance	(2,689)	(2,791)	(2,821)
Depreciation and amortization	(1,016)	(910)	(839)
Interest income	6	9	9
Interest expense	(367)	(323)	(285)
Income tax expense	38	(31)	5
Other segment items	(1,398)	(1,208)	(3,547)
Earnings attributable to common shares	865	955	811
CAPITAL EXPENDITURES FOR PROPERTY, PLANT AND EQUIPMENT	$ 2,116	$ 2,231	$ 2,020