SEGMENT INFORMATION - Reconciliation of Earnings Attributable To Common Shares (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ 13,702	$ 13,185	$ 16,720
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)
Equity earnings	1,604	1,609	1,481
Losses attributable to contingently redeemable noncontrolling interest	3	0	0
Earnings attributable to common shares	1,796	2,817	3,030
SDG&E
Segment Reporting, Revenue Reconciling Item [Line Items]
Interest income	2	5	15
Interest expense	(559)	(525)	(497)
Income tax expense	128	(153)	26
Earnings attributable to common shares	563	891	936
Operating Segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Earnings attributable to common shares	2,129	3,538	3,318
Parent and other
Segment Reporting, Revenue Reconciling Item [Line Items]
Earnings attributable to common shares	(333)	(721)	(288)
Sempra California | Operating Segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	11,818	11,382	13,761
Operation and maintenance	(4,315)	(4,398)	(4,591)
Depreciation and amortization	(2,332)	(2,133)	(1,937)
Interest income	8	14	24
Interest expense	(926)	(848)	(782)
Income tax expense	166	(184)	31
Equity earnings
Earnings attributable to noncontrolling interests
Losses attributable to contingently redeemable noncontrolling interest
Other segment items	(2,991)	(1,987)	(4,759)
Earnings attributable to common shares	1,428	1,846	1,747
Sempra Texas Utilities | Operating Segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Equity earnings	869	788	701
Earnings attributable to noncontrolling interests
Losses attributable to contingently redeemable noncontrolling interest
Other segment items	(8)	(7)	(7)
Earnings attributable to common shares	861	781	694
Sempra Infrastructure | Operating Segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	1,965	1,882	3,071
Operation and maintenance	(865)	(858)	(793)
Depreciation and amortization	(226)	(297)	(281)
Interest income	66	25	43
Interest expense	(28)	243	(129)
Income tax expense	(1,200)	164	(673)
Equity earnings	735	802	740
Earnings attributable to noncontrolling interests	(238)	(638)	(543)
Losses attributable to contingently redeemable noncontrolling interest	3
Other segment items	(372)	(412)	(558)
Earnings attributable to common shares	(160)	911	877
Reportable Segment | SDG&E
Segment Reporting, Revenue Reconciling Item [Line Items]
Operation and maintenance	(1,725)	(1,692)	(1,846)
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