SEMPRA - EQUITY AND EARNINGS PER COMMON SHARE - NET INCOME ATTRIBUTABLE TO SEMPRA AND TRANSFERS (TO) FROM NCI (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Earnings Per Share [Abstract]
Net income attributable to Sempra	$ 812	$ 980
Increase in shareholders’ equity for sale of NCI		18
Net transfers (to) from NCI		18
Change from net income attributable to Sempra and transfers (to) from NCI		$ 998