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DEBT AND CREDIT FACILITIES - UNCOMMITTED LETTERS OF CREDIT (Details) $ in Millions | Jun. 30, 2023 USD ($)
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Line of Credit Facility [Line Items] |
Uncommitted letters of credit outstanding | $ 514
Letter of Credit |
Line of Credit Facility [Line Items] |
Uncommitted letters of credit outstanding | 514
Letter of Credit | San Diego Gas and Electric Company |
Line of Credit Facility [Line Items] |
Uncommitted letters of credit outstanding | 15
Letter of Credit | Southern California Gas Company |
Line of Credit Facility [Line Items] |
Uncommitted letters of credit outstanding | 20
Letter of Credit | Sempra Infrastructure |
Line of Credit Facility [Line Items] |
Uncommitted letters of credit outstanding | 311
Letter of Credit | Parent and Other |
Line of Credit Facility [Line Items] |
Uncommitted letters of credit outstanding | $ 168

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- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + Details
Name: | us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- 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/2009/role/commonPracticeRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(f)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1 + Details
Name: | us-gaap_LineOfCreditFacilityLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_LetterOfCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- 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: |

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

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