SEGMENT INFORMATION - Reconciliation of Earnings Attributable To Common Shares (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting, Revenue Reconciling Item [Line Items]
Electric	$ 4,296	$ 4,334	$ 4,783
Natural gas	7,141	9,495	7,868
Revenues from contracts with customers	11,818	14,848	13,722
Utilities regulatory revenues	374	75	633
Aliso Canyon litigation and regulatory matters	0	0	(259)
Interest income	61	89	75
Interest expense	(1,049)	(1,309)	(1,054)
Income tax expense	(219)	(490)	(556)
Earnings attributable to common shares	2,817	3,030	2,094
Capital expenditures for property, plant and equipment	8,215	8,397	5,357
SDG&E
Segment Reporting, Revenue Reconciling Item [Line Items]
Electric	4,313	4,349	4,795
Natural gas	1,028	1,248	1,043
Revenues from contracts with customers	5,042	5,954	5,586
Utilities regulatory revenues	299	(357)	252
Operating Revenue	5,341	5,597	5,838
Depreciation and amortization	(1,223)	(1,098)	(982)
Interest income	5	15	5
Interest expense	(525)	(497)	(449)
Income tax expense	(153)	26	(182)
Earnings attributable to common shares	891	936	915
SDG&E | Reportable Segment
Segment Reporting, Revenue Reconciling Item [Line Items]
Electric	4,164	4,750	4,687
Natural gas	878	1,204	899
Revenues from contracts with customers	5,042	5,954	5,586
Funds received on behalf of customers	299	(357)	252
Operating Revenue	5,341	5,597	5,838
Depreciation and amortization	(1,223)	(1,098)	(982)
Interest income	5	15	5
Interest expense	(525)	(497)	(449)
Income tax expense	(153)	26	(182)
Other segment items	(2,554)	(3,107)	(3,315)
Earnings attributable to common shares	891	936	915
Capital expenditures for property, plant and equipment	2,522	2,540	2,473
SDG&E | Natural Gas | Reportable Segment
Segment Reporting, Revenue Reconciling Item [Line Items]
Utilities	150	44	143
SDG&E | Electric, Non-Nuclear | Reportable Segment
Segment Reporting, Revenue Reconciling Item [Line Items]
Utilities	149	(401)	109
SoCalGas
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues from contracts with customers	6,134	7,857	6,459
Utilities regulatory revenues	75	432	381
Operating Revenue	6,209	8,289	6,840
Aliso Canyon litigation and regulatory matters	0	0	(259)
Depreciation and amortization	(910)	(839)	(761)
Interest income	9	9	6
Interest expense	(323)	(285)	(198)
Income tax expense	(31)	5	(138)
Earnings attributable to common shares	955	811	599
SoCalGas | Reportable Segment
Segment Reporting, Revenue Reconciling Item [Line Items]
Natural gas	6,134	7,857	6,459
Funds received on behalf of customers	75	432	381
Operating Revenue	6,209	8,289	6,840
Aliso Canyon litigation and regulatory matters	0	0	(259)
Depreciation and amortization	(910)	(839)	(761)
Interest income	9	9	6
Interest expense	(323)	(285)	(198)
Income tax expense	(31)	5	(138)
Other segment items	(3,999)	(6,368)	(4,891)
Earnings attributable to common shares	955	811	599
Capital expenditures for property, plant and equipment	$ 2,231	$ 2,020	$ 1,993