SEMPRA - EQUITY AND EARNINGS PER COMMON SHARE - NONCONTROLLING INTERESTS NARATIVE (Details) - USD ($) $ in Millions	1 Months Ended			12 Months Ended
	Sep. 30, 2023	Mar. 31, 2023	Jun. 30, 2022	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 21, 2021	Oct. 31, 2021
Noncontrolling Interest [Line Items]
Increase in the noncontrolling interest balance from the sale of noncontrolling interest					$ 1,234	$ 1,419
Contributions				$ 1,235	1,625	31
Net income, income tax expense (benefit), attributable to parent				$ 219	490	$ 556
SI Partners | Abu Dhabi Investment Authority
Noncontrolling Interest [Line Items]
Sale of noncontrolling interest, purchase price							$ 1,700
Ownership percentage held by noncontrolling owners							10.00%
SI Partners | Sempra Infrastructure
Noncontrolling Interest [Line Items]
Increase in the noncontrolling interest balance from the sale of noncontrolling interest			$ 709
Sale of noncontrolling interest, change in equity			710
Sale of noncontrolling interest, transaction costs			12
Sale of noncontrolling interest, deferred income tax liability			300
Sale of noncontrolling interest, transaction costs reimbursed			$ 10
Ownership interest (as a percent)				70.00%
Port Arthur LNG | SI Partners | KKR Denali
Noncontrolling Interest [Line Items]
Ownership percentage held by noncontrolling owners	42.00%
Port Arthur LNG | Indirect Subsidiary Of SI Partners
Noncontrolling Interest [Line Items]
Ownership percentage held by noncontrolling owners		30.00%
Noncontrolling interest, funding commitment, percentage		110.00%
Noncontrolling interest, guaranteed funding commitment, percentage		70.00%
SI Partners Subsidiary | Indirect Subsidiary Of SI Partners | KKR Denali
Noncontrolling Interest [Line Items]
Ownership percentage held by noncontrolling owners	60.00%
Port Arthur LNG
Noncontrolling Interest [Line Items]
Contributions		$ 234
Port Arthur LNG | KKR Denali
Noncontrolling Interest [Line Items]
Increase in the noncontrolling interest balance from the sale of noncontrolling interest	$ 61
Contributions	1,000
Noncontrolling interest, increase from sale of parent equity interest, transaction costs	11
Noncontrolling interest, increase from sale of parent equity interest, tax expense (benefit)	(23)
Port Arthur LNG | SI Partners | KKR Denali
Noncontrolling Interest [Line Items]
Sale of noncontrolling interest, cash consideration, minimum interest transferred	$ 976
Port Arthur LNG | Indirect Subsidiary Of SI Partners
Noncontrolling Interest [Line Items]
Noncontrolling interest, funding commitment		9,000
Contributions		12
Noncontrolling interest, increase from sale of parent equity interest, transaction costs		3
Noncontrolling interest, increase from sale of parent equity interest, tax expense (benefit)		5
Proceeds from divestiture of interest in joint venture		$ 254
Funding commitment paid				$ 2,700
SI Partners
Noncontrolling Interest [Line Items]
Increase in the noncontrolling interest balance from the sale of noncontrolling interest					200
Sale of noncontrolling interest, change in equity					145
SI Partners | KKR
Noncontrolling Interest [Line Items]
Noncontrolling interest, funding commitment								$ 200
Payments to noncontrolling interests					$ 200