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EMPLOYEE BENEFIT PLANS - EMPLOYER CONTRIBUTIONS TO SAVINGS PLANS (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Savings Plan [Line Items] |  |  |
Employer contributions to defined benefit plan | $ 65 | $ 59 | $ 64
SDG&E |  |  |
Savings Plan [Line Items] |  |  |
Employer contributions to defined benefit plan | 22 | 20 | 19
SoCalGas |  |  |
Savings Plan [Line Items] |  |  |
Employer contributions to defined benefit plan | $ 33 | $ 32 | $ 30

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- Definition Defined contribution plan, employer matching amount. + References No definition available. + Details
Name: | sre_DefinedContributionPlanEmployerMatchingAmount
Namespace Prefix: | sre_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | sre_SavingsPlanLineItems
Namespace Prefix: | sre_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | dei_LegalEntityAxis=sre_SanDiegoGasAndElectricCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=sre_SouthernCaliforniaGasCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |