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COMMITMENTS AND CONTINGENCIES - LEASE INFORMATION NARRATIVE (Details) $ in Millions | 6 Months Ended
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Jun. 30, 2023 USD ($) agreement
San Diego Gas and Electric Company |
Lessee, Lease, Description [Line Items] |
Right-of-use asset and lease liability | $ 101
Undiscounted lease payments due remainder of the year | 9
Undiscounted lease payments due year one | 13
Undiscounted lease payments due year two | 13
Undiscounted lease payments due year three | 13
Undiscounted lease payments due year four | 13
Undiscounted lease payments due thereafter | $ 66
Number of energy storage agreements | agreement | 4
Lease not yet commenced, remainder of year | $ 1
Lease not yet commenced, year one | 32
Lease not yet commenced, year two | 41
Lease not yet commenced, year three | 41
Lease not yet commenced, year four | 40
Lease not yet commenced, thereafter | 377
Southern California Gas Company |
Lessee, Lease, Description [Line Items] |
Finance lease not yet commenced, year one | 1
Finance lease not yet commenced, year two | 1
Finance lease not yet commenced, year three | 1
Finance lease not yet commenced, year four | 1
Finance lease not yet commenced, year thereafter | $ 6

X
- Definition Lessee, Finance Lease, Lease Not Yet Commenced, Thereafter + References No definition available. + Details
Name: | sre_LesseeFinanceLeaseLeaseNotYetCommencedThereafter
Namespace Prefix: | sre_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Lessee, Finance Lease, Lease Not Yet Commenced, Year Four + References No definition available. + Details
Name: | sre_LesseeFinanceLeaseLeaseNotYetCommencedYearFour
Namespace Prefix: | sre_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Lessee, Finance Lease, Lease Not Yet Commenced, Year One + References No definition available. + Details
Name: | sre_LesseeFinanceLeaseLeaseNotYetCommencedYearOne
Namespace Prefix: | sre_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Lessee, Finance Lease, Lease Not Yet Commenced, Year Three + References No definition available. + Details
Name: | sre_LesseeFinanceLeaseLeaseNotYetCommencedYearThree
Namespace Prefix: | sre_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Lessee, Finance Lease, Lease Not Yet Commenced, Year Two + References No definition available. + Details
Name: | sre_LesseeFinanceLeaseLeaseNotYetCommencedYearTwo
Namespace Prefix: | sre_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Lessee, Number Of Energy Storage Agreements + References No definition available. + Details
Name: | sre_LesseeNumberOfEnergyStorageAgreements
Namespace Prefix: | sre_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Lessee, Operating Lease, Lease Not Yet Commenced, After Year Four + References No definition available. + Details
Name: | sre_LesseeOperatingLeaseLeaseNotYetCommencedAfterYearFour
Namespace Prefix: | sre_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Lessee, Operating Lease, Lease Not Yet Commenced, Remainder of Fiscal Year + References No definition available. + Details
Name: | sre_LesseeOperatingLeaseLeaseNotYetCommencedRemainderOfFiscalYear
Namespace Prefix: | sre_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Lessee, Operating Lease, Lease Not Yet Commenced, Year Four + References No definition available. + Details
Name: | sre_LesseeOperatingLeaseLeaseNotYetCommencedYearFour
Namespace Prefix: | sre_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Lessee, Operating Lease, Lease Not Yet Commenced, Year One + References No definition available. + Details
Name: | sre_LesseeOperatingLeaseLeaseNotYetCommencedYearOne
Namespace Prefix: | sre_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Lessee, Operating Lease, Lease Not Yet Commenced, Year Three + References No definition available. + Details
Name: | sre_LesseeOperatingLeaseLeaseNotYetCommencedYearThree
Namespace Prefix: | sre_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Lessee, Operating Lease, Lease Not Yet Commenced, Year Two + References No definition available. + Details
Name: | sre_LesseeOperatingLeaseLeaseNotYetCommencedYearTwo
Namespace Prefix: | sre_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Lessee, Operating Lease, Undiscounted Amount, To Be Paid, Due After Year Four + References No definition available. + Details
Name: | sre_LesseeOperatingLeaseUndiscountedAmountToBePaidDueAfterYearFour
Namespace Prefix: | sre_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Lessee, Operating Lease, Undiscounted Amount, To Be Paid In Year Four + References No definition available. + Details
Name: | sre_LesseeOperatingLeaseUndiscountedAmountToBePaidInYearFour
Namespace Prefix: | sre_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Lessee, Operating Lease, Undiscounted Amount, To Be Paid In Year One + References No definition available. + Details
Name: | sre_LesseeOperatingLeaseUndiscountedAmountToBePaidInYearOne
Namespace Prefix: | sre_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Lessee, Operating Lease, Undiscounted Amount, To Be Paid In Year Three + References No definition available. + Details
Name: | sre_LesseeOperatingLeaseUndiscountedAmountToBePaidInYearThree
Namespace Prefix: | sre_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Lessee, Operating Lease, Undiscounted Amount, To Be Paid In Year Two + References No definition available. + Details
Name: | sre_LesseeOperatingLeaseUndiscountedAmountToBePaidInYearTwo
Namespace Prefix: | sre_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Lessee, Operating Lease, Undiscounted Amount, To Be Paid Remainder Of The Year + References No definition available. + Details
Name: | sre_LesseeOperatingLeaseUndiscountedAmountToBePaidRemainderOfTheYear
Namespace Prefix: | sre_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Operating Lease, Right-Of-Use Asset And Lease Liability + References No definition available. + Details
Name: | sre_OperatingLeaseRightOfUseAssetAndLeaseLiability
Namespace Prefix: | sre_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-3 + Details
Name: | us-gaap_LesseeLeaseDescriptionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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

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