SEMPRA - SEGMENT INFORMATION - NARRATIVE (Details)	9 Months Ended
Sep. 30, 2024 segment
Segment Reporting Information [Line Items]
Number of reportable segments	3
Sempra Infrastructure \| SI Partners
Segment Reporting Information [Line Items]
Ownership interest (as a percent)	70.00%
Oncor Electric Delivery Company LLC Additional Acquisition \| Sempra Texas Utilities
Segment Reporting Information [Line Items]
Acquired percentage interest (in percent)	80.25%
Sharyland Holdings, LP \| Sempra Texas Utilities
Segment Reporting Information [Line Items]
Acquired percentage interest (in percent)	50.00%

Percentage of voting equity interests acquired at the acquisition date in the business combination.

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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