SEMPRA - EQUITY AND EARNINGS PER COMMON SHARE - NONCONTROLLING INTERESTS (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Earnings Per Share [Abstract]
Net income attributable to Sempra	$ 1,037	$ 917
Increase in shareholders' equity from allocation of interest	6
Net transfers (to) from CRNCI and NCI	6
Change from net income attributable to Sempra and transfers (to) from CRNCI and NCI	$ 1,043