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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 |  |  |

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