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PLAN DESCRIPTION AND RELATED INFORMATION - Narrative (Details) - Sempra Savings Plan 002 | 12 Months Ended |
--- | --- | ---
Dec. 31, 2025 USD ($) loan yr shares | Dec. 31, 2024 USD ($) shares | Sep. 30, 2025
EBP, Description of Plan [Line Items] |  |  |
Maximum annual participant contribution, percentage of total compensation | 50.00% |  |
Annual pretax participant contribution, incremental contributions | 1.00% |  |
Contribution automatic deferral rate | 6.00% |  |
Annual automatic increase in deferral rate | 1.00% |  |
Retirement age | yr | 65 |  |
Employer contribution, matching percentage | 50.00% |  |
Employer contribution, participant compensation matched, percentage | 6.00% |  |
Employer contribution, matching percentage, additional contributions for each one percent of increase in contribution | 0.20% |  |
Employer contribution vesting service period | 1 year |  |
Employer contribution maximum vesting age | yr | 65 |  |
Investment increments | 1.00% |  |
Self directed brokerage account, investment limit | 50.00% |  |
Termination of employment, account balance threshold | $ 5,000 |  |
Termination of employment, cash-out limit | 1,000 |  |
Termination of employment, cash out, rollover limit | $ 200 |  |
Threshold, partial plan termination, reduction in number of active participants, percentage | 20.00% |  |
Note receivable from participant account, maximum borrowing, as a percentage of total account balance | 50.00% |  |
Note receivable from participant account, maximum borrowing amount | $ 50,000 |  |
Note receivable from participant account, maximum borrowing amount, measurement period | 12 months |  |
Note receivable from participant account, minimum borrowing amount | $ 1,000 |  |
Number of allowed loans outstanding | loan | 2 |  |
Primary residence loans, borrowing term | 15 years |  |
Other loans, borrowing term | 5 years |  |
Participant loan, basis spread on variable rate | 1.00% |  |
Forfeited nonvested account | $ 6,000 | $ 5,000 |
Employer contributions reduced from forfeited accounts | $ 37,000 |  |
Sempra Infrastructure Partners, LP |  |  |
EBP, Description of Plan [Line Items] |  |  |
Equity interest in subsidiary |  |  | 70.00%
Sempra Services Corporation |  |  |
EBP, Description of Plan [Line Items] |  |  |
Subsidiary ownership percentage | 100.00% |  |
Sempra common stock |  |  |
EBP, Description of Plan [Line Items] |  |  |
Number of shares held through Master Trust (in shares) | shares | 755,334 | 793,444 |
Plan interest in master trust, cost basis | $ 33,886,000 | $ 33,466,000 |
Sempra common stock | EBP, Nonconsolidated, Plan Interest in Master Trust |  |  |
EBP, Description of Plan [Line Items] |  |  |
Dividend income | 2,030,000 |  |
Minimum |  |  |
EBP, Description of Plan [Line Items] |  |  |
Termination of employment, account balance threshold | $ 1,001 |  |
Participant loan interest rate | 4.25% | 4.25% |
Maximum |  |  |
EBP, Description of Plan [Line Items] |  |  |
Contribution automatic deferral rate | 11.00% |  |
Employer contribution, participant compensation matched, percentage | 11.00% |  |
Termination of employment, account balance threshold | $ 5,000 |  |
Participant loan interest rate | 9.50% | 9.50% |

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