SEMPRA - EQUITY AND EARNINGS PER COMMON SHARE - NET INCOME ATTRIBUTABLE TO SEMPRA AND TRANSFERS (TO) FROM NCI (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Earnings Per Share [Abstract]
Net income attributable to Sempra	$ 725	$ 615	$ 1,537	$ 1,595
Increase in shareholders’ equity for sale of NCI		0		18
Net transfers (to) from NCI		0		18
Change from net income attributable to Sempra and transfers (to) from NCI		$ 615		$ 1,613