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SEMPRA - INVESTMENTS IN UNCONSOLIDATED ENTITIES - NARRATIVE (Details) - USD ($) $ in Millions			3 Months Ended
	May 02, 2025	May 01, 2025	Mar. 31, 2025	Mar. 31, 2024
Schedule of Equity Method Investments [Line Items]
Proceeds from distributions received			$ 291	$ 232
Sempra Texas Intermediate Holding Company LLC \| Oncor Holdings
Schedule of Equity Method Investments [Line Items]
Equity ownership interest (as a percent)			100.00%
Oncor Holdings \| Oncor Electric Delivery Company LLC.
Schedule of Equity Method Investments [Line Items]
Ownership interest (as a percent)			80.25%
Sempra Texas Utilities \| Oncor Holdings
Schedule of Equity Method Investments [Line Items]
Investments made during period			$ 486	193
Proceeds from distributions received			142	100
Sempra Texas Utilities \| Oncor Holdings \| Subsequent Event
Schedule of Equity Method Investments [Line Items]
Investments made during period	$ 486
Proceeds from distributions received		$ 142
Sempra Infrastructure \| Cameron LNG JV
Schedule of Equity Method Investments [Line Items]
Proceeds from distributions received			149	132
Sempra Infrastructure \| TAG
Schedule of Equity Method Investments [Line Items]
Proceeds from distributions received			$ 45	$ 62