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SEMPRA - EQUITY AND EARNINGS PER COMMON SHARE - COMMON STOCK NARRATIVE (Details) - USD ($) $ in Millions | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Dec. 31, 2024 | Nov. 30, 2024
Equity, Class of Treasury Stock [Line Items] |  |  |  |
Common stock, shares authorized (in shares) | 1,125,000,000 |  | 1,125,000,000 |
Common stock |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |
Shares withheld for tax purposes (in shares) | 671,961 | 552,799 |  |
Shares withheld for tax purposes | $ 57 | $ 40 |  |
At The Market Program Offering |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |
Aggregate sales price |  |  |  | $ 3,000
Underwriting commission, percent |  |  |  | 1.00%
Aggregate sales price remaining | $ 2,600 |  |  |

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