SEMPRA - EQUITY AND EARNINGS PER COMMON SHARE - NET INCOME ATTRIBUTABLE TO SEMPRA AND TRANSFERS (TO) FROM NCI (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Earnings Per Share [Abstract]
Net of tax amount, attributable to parent	$ 3,075	$ 2,139	$ 1,318
Increase in shareholders’ equity for purchases of NCI	0	0	1,415
(Decrease) increase in shareholders’ equity for sales of NCI	(49)	710	1,429
Net transfers (to) from NCI	(49)	710	2,844
Change from net income attributable to Sempra and transfers (to) from NCI	$ 3,026	$ 2,849	$ 4,162