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<xbrl
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    <context id="rc">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000092108</identifier>
        </entity>
        <period>
            <startDate>2026-08-17</startDate>
            <endDate>2026-08-17</endDate>
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    <context id="offrl_1">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000092108</identifier>
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            <startDate>2026-08-17</startDate>
            <endDate>2026-08-17</endDate>
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    <context id="ofst_1">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000092108</identifier>
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                <xbrldi:typedMember dimension="ffd:OffsetAxis">
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            <endDate>2026-08-17</endDate>
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    <context id="ofst_2">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000092108</identifier>
            <segment>
                <xbrldi:typedMember dimension="ffd:OffsetAxis">
                    <dei:lineNo>2</dei:lineNo>
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        </entity>
        <period>
            <startDate>2026-08-17</startDate>
            <endDate>2026-08-17</endDate>
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    <unit id="USD">
        <measure>iso4217:USD</measure>
    </unit>
    <unit id="pure">
        <measure>pure</measure>
    </unit>
    <unit id="Shares">
        <measure>shares</measure>
    </unit>
    <ffd:FormTp contextRef="rc" id="ixv-384">S-3</ffd:FormTp>
    <ffd:SubmissnTp contextRef="rc" id="ixv-385">424B2</ffd:SubmissnTp>
    <ffd:FeeExhibitTp contextRef="rc" id="ixv-386">EX-FILING FEES</ffd:FeeExhibitTp>
    <ffd:RegnFileNb contextRef="rc" id="ixv-387">333-295219</ffd:RegnFileNb>
    <dei:EntityCentralIndexKey contextRef="rc" id="ixv-388">0000092108</dei:EntityCentralIndexKey>
    <dei:EntityRegistrantName contextRef="rc" id="ixv-389">SOUTHERN CALIFORNIA GAS CO</dei:EntityRegistrantName>
    <ffd:OfferingTableNa contextRef="rc" id="hiddenrcOfferingTableNa" xsi:nil="true"/>
    <ffd:OffsetTableNa contextRef="rc" id="hiddenrcOffsetTableNa" xsi:nil="true"/>
    <ffd:CombinedProspectusTableNa contextRef="rc" id="hiddenrcCombinedProspectusTableNa">N/A</ffd:CombinedProspectusTableNa>
    <ffd:OffsetClmdInd contextRef="ofst_1" id="ixv-393">true</ffd:OffsetClmdInd>
    <ffd:OffsetClmdInd contextRef="ofst_2" id="ixv-394">false</ffd:OffsetClmdInd>
    <ffd:FormTp contextRef="rc" id="ixv-437">S-3</ffd:FormTp>
    <dei:EntityRegistrantName contextRef="rc" id="ixv-438">SOUTHERN CALIFORNIA GAS CO</dei:EntityRegistrantName>
    <ffd:PrevslyPdFlg contextRef="offrl_1" id="ixv-439">false</ffd:PrevslyPdFlg>
    <ffd:OfferingSctyTp contextRef="offrl_1" id="ixv-440">Debt</ffd:OfferingSctyTp>
    <ffd:OfferingSctyTitl contextRef="offrl_1" id="ixv-441">5.500% First Mortgage Bonds, Series GGG, due 2036</ffd:OfferingSctyTitl>
    <ffd:Rule457rFlg contextRef="offrl_1" id="ixv-442">true</ffd:Rule457rFlg>
    <ffd:AmtSctiesRegd
      contextRef="offrl_1"
      decimals="0"
      id="ixv-443"
      unitRef="Shares">500000000</ffd:AmtSctiesRegd>
    <ffd:MaxOfferingPricPerScty
      contextRef="offrl_1"
      decimals="5"
      id="ixv-444"
      unitRef="USD">0.99405</ffd:MaxOfferingPricPerScty>
    <ffd:MaxAggtOfferingPric
      contextRef="offrl_1"
      decimals="2"
      id="ixv-445"
      unitRef="USD">497025000.00</ffd:MaxAggtOfferingPric>
    <ffd:FeeRate
      contextRef="offrl_1"
      decimals="7"
      id="ixv-446"
      unitRef="pure">0.0001381</ffd:FeeRate>
    <ffd:FeeAmt
      contextRef="offrl_1"
      decimals="2"
      id="ixv-447"
      unitRef="USD">68639.16</ffd:FeeAmt>
    <ffd:TtlOfferingAmt contextRef="rc" decimals="2" id="ixv-448" unitRef="USD">497025000.00</ffd:TtlOfferingAmt>
    <ffd:TtlFeeAmt contextRef="rc" decimals="2" id="ixv-449" unitRef="USD">68639.16</ffd:TtlFeeAmt>
    <ffd:TtlPrevslyPdAmt contextRef="rc" decimals="2" id="ixv-450" unitRef="USD">0.00</ffd:TtlPrevslyPdAmt>
    <ffd:TtlOffsetAmt contextRef="rc" decimals="2" id="ixv-451" unitRef="USD">68639.16</ffd:TtlOffsetAmt>
    <ffd:NetFeeAmt contextRef="rc" decimals="2" id="ixv-452" unitRef="USD">0.00</ffd:NetFeeAmt>
    <ffd:OfferingNote contextRef="offrl_1" id="ixv-453">The registration fee is calculated in accordance with Rule 457(r) of the Securities Act of 1933, as amended. This "Calculation of Filing Fee" table shall be deemed to update the "Calculation of Registration Fee" table in the registrant's Registration Statement on Form S-3ASR (File No. 333-295219) in accordance with Rules 456(b) and 457(r) under the Securities Act of 1933, as amended.</ffd:OfferingNote>
    <ffd:Rule457pOffsetFlg contextRef="ofst_1" id="ixv-454">true</ffd:Rule457pOffsetFlg>
    <ffd:OffsetPrrFilerNm contextRef="ofst_1" id="ixv-455">Southern California Gas Co</ffd:OffsetPrrFilerNm>
    <ffd:OffsetPrrFormTp contextRef="ofst_1" id="ixv-456">S-3</ffd:OffsetPrrFormTp>
    <ffd:OffsetPrrFileNb contextRef="ofst_1" id="ixv-457">333-270939</ffd:OffsetPrrFileNb>
    <ffd:OffsetClmInitlFilgDt contextRef="ofst_1" id="ixv-458">2023-03-29</ffd:OffsetClmInitlFilgDt>
    <ffd:OffsetClmdAmt contextRef="ofst_1" decimals="2" id="ixv-459" unitRef="USD">68639.16</ffd:OffsetClmdAmt>
    <ffd:OffsetPrrSctyTp contextRef="ofst_1" id="ixv-460">Unallocated (Universal) Shelf</ffd:OffsetPrrSctyTp>
    <ffd:OffsetPrrSctyTitl contextRef="ofst_1" id="ixv-461">Unallocated (Universal) Shelf</ffd:OffsetPrrSctyTitl>
    <ffd:OffsetPrrUnsoldOfferingAmt contextRef="ofst_1" decimals="2" id="ixv-462" unitRef="USD">622859891.11</ffd:OffsetPrrUnsoldOfferingAmt>
    <ffd:Rule457pOffsetFlg contextRef="ofst_2" id="ixv-463">true</ffd:Rule457pOffsetFlg>
    <ffd:OffsetPrrFilerNm contextRef="ofst_2" id="ixv-464">Southern California Gas Co</ffd:OffsetPrrFilerNm>
    <ffd:OffsetPrrFormTp contextRef="ofst_2" id="ixv-465">S-3</ffd:OffsetPrrFormTp>
    <ffd:OffsetPrrFileNb contextRef="ofst_2" id="ixv-466">333-270939</ffd:OffsetPrrFileNb>
    <ffd:OffsetSrcFilgDt contextRef="ofst_2" id="ixv-467">2023-03-29</ffd:OffsetSrcFilgDt>
    <ffd:OffsetPrrFeeAmt contextRef="ofst_2" decimals="2" id="ixv-468" unitRef="USD">68639.16</ffd:OffsetPrrFeeAmt>
    <ffd:TermntnCmpltnWdrwl contextRef="ofst_1" id="ixv-469">Southern California Gas Company previously registered senior debt securities, first mortgage bonds and shares of preferred stock, without par value (collectively, the "Offered Securities"), having an aggregate gross sales price of up to $4,000,000,000, pursuant to a prospectus dated April 27, 2023 (the "Prior Prospectus") that formed a part of a registration statement on Form S-3 (Registration No. 333-270939) filed on March 29, 2023. The offering under the Prior Prospectus terminated. The registration fee for the Offered Securities registered pursuant to the Prior Prospectus totaled $341,620, of which $68,639.16 (calculated at the filing fee rate in effect at the time of the filing of the Prior Prospectus) was contemporaneously paid with the filing of the Prior Prospectus and relates to unsold Offered Securities having an aggregate gross sales price of up to $622,859,891.11 and therefore is available to offset registration fees payable pursuant to this prospectus supplement. Southern California Gas Company hereby uses the available previously paid but unused registration fees associated with the Prior Prospectus in the amount of $68,639.16 to offset the total registration fee due under this prospectus supplement.</ffd:TermntnCmpltnWdrwl>
    <ffd:OffsetNote contextRef="ofst_2" id="ixv-470">See Note 1.</ffd:OffsetNote>
    <ffd:NrrtvMaxAggtOfferingPric contextRef="rc" decimals="2" id="ixv-471" unitRef="USD">497025000.00</ffd:NrrtvMaxAggtOfferingPric>
    <ffd:FnlPrspctsFlg contextRef="rc" id="ixv-472">true</ffd:FnlPrspctsFlg>
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