SEMPRA - EQUITY AND EARNINGS PER COMMON SHARE - EARNINGS PER COMMON SHARE (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Earnings attributable to common shares, basic	$ 713	$ 603	$ 1,514	$ 1,572
Earnings attributable to common shares, diluted	$ 713	$ 603	$ 1,514	$ 1,572
Weighted-average common shares outstanding for basic EPS (in shares)	633,450,000	630,014,000	633,135,000	629,926,000
Dilutive effect of common shares sold forward (in shares)	1,139,000	0	906,000	0
Dilutive effect of stock options and RSUs (in shares)	1,690,000	2,107,000	1,776,000	2,259,000
Weighted-average common shares outstanding for diluted EPS (in shares)	636,279,000	632,121,000	635,817,000	632,185,000
Earnings per share, basic (dollars per share)	$ 1.13	$ 0.96	$ 2.39	$ 2.50
Earnings per share, diluted (in dollars per share)	$ 1.12	$ 0.95	$ 2.38	$ 2.49
Vested RSUs included in basic WASO (in shares)	610,000	710,000	617,000	715,000
Stock options, RSAs and RSUs
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Non-qualified stock options granted (in shares)			414,812
Performance-based RSUs
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Equity awards, granted (in shares)			721,049
Service-based RSUs
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Equity awards, granted (in shares)			312,043
Stock options, RSAs and RSUs
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Antidilutive securities excluded from earnings per share (in shares)	1,184,115	428,138	1,270,327	394,084