SEMPRA - EQUITY AND EARNINGS PER COMMON SHARE - NONCONTROLLING INTERESTS (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Earnings Per Share [Abstract]
Net income attributable to Sempra	$ 883	$ 95	$ 2,717	$ 1,485
Increase in shareholders’ equity from investor equity subscription	0	16	0	16
(Decrease) increase in shareholders' equity from allocation of interest	(42)	635	(56)	635
Net transfers (to) from CRNCI and NCI	(42)	651	(56)	651
Change from net income attributable to Sempra and transfers (to) from CRNCI and NCI	$ 841	$ 746	$ 2,661	$ 2,136

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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