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  xmlns:srg="http://seritage.com/20200521"
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    <context id="c20200521to20200521">
        <entity>
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        <period>
            <startDate>2020-05-21</startDate>
            <endDate>2020-05-21</endDate>
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    <context id="c20200521to20200521_StatementClassOfStockAxis_Seven00SeriesACumulativeRedeemablePreferredSharesOfBeneficialInterestParValue001PerShareMember">
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            <endDate>2020-05-21</endDate>
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    </context>
    <dei:AmendmentFlag
      contextRef="c20200521to20200521"
      id="Fact_71c1b7d9ca434bcd85c1a61f0c20640b">false</dei:AmendmentFlag>
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      contextRef="c20200521to20200521"
      id="Fact_f8ea2702f6e440f68055bec079bd2688">Seritage Growth Properties</dei:EntityRegistrantName>
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      contextRef="c20200521to20200521"
      id="Fact_f411200b0d8547e988008605b78ac8d9">0001628063</dei:EntityCentralIndexKey>
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      contextRef="c20200521to20200521"
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      contextRef="c20200521to20200521"
      id="Fact_1f0fa77a13fb40358cd6cab41666187b">2020-05-21</dei:DocumentPeriodEndDate>
    <dei:EntityIncorporationStateCountryCode
      contextRef="c20200521to20200521"
      id="Fact_fe926e87e6794c4393b63bbb4ceae07d">MD</dei:EntityIncorporationStateCountryCode>
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      contextRef="c20200521to20200521"
      id="Fact_a698bbecc2424aa7b4e2d09dbb46199f">001-37420</dei:EntityFileNumber>
    <dei:EntityTaxIdentificationNumber
      contextRef="c20200521to20200521"
      id="Fact_ae284e03de384075814e8dc5d071c8dc">38-3976287</dei:EntityTaxIdentificationNumber>
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      contextRef="c20200521to20200521"
      id="Fact_2d53c7955aa54f9eae58859bdfdd2626">500 Fifth Avenue</dei:EntityAddressAddressLine1>
    <dei:EntityAddressAddressLine2
      contextRef="c20200521to20200521"
      id="Fact_f83f36424cbd4c66a79390d08710b135">Suite 1530</dei:EntityAddressAddressLine2>
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      contextRef="c20200521to20200521"
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      contextRef="c20200521to20200521"
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      contextRef="c20200521to20200521"
      id="Fact_7affafa755094d0b8a9e767829c69c84">10110</dei:EntityAddressPostalZipCode>
    <dei:CityAreaCode
      contextRef="c20200521to20200521"
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      contextRef="c20200521to20200521"
      id="Fact_d6b90270fd59422399e85dd8fb941c56">355-7800</dei:LocalPhoneNumber>
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      contextRef="c20200521to20200521_StatementClassOfStockAxis_CommonClassAMember"
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      contextRef="c20200521to20200521_StatementClassOfStockAxis_CommonClassAMember"
      id="Fact_bd49be80e37145f28f45edf2ba9ecf9d">SRG</dei:TradingSymbol>
    <dei:SecurityExchangeName
      contextRef="c20200521to20200521_StatementClassOfStockAxis_CommonClassAMember"
      id="Fact_61a19dfa0e38498286ccf07f1e491f5e">NYSE</dei:SecurityExchangeName>
    <dei:Security12bTitle
      contextRef="c20200521to20200521_StatementClassOfStockAxis_Seven00SeriesACumulativeRedeemablePreferredSharesOfBeneficialInterestParValue001PerShareMember"
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    <dei:TradingSymbol
      contextRef="c20200521to20200521_StatementClassOfStockAxis_Seven00SeriesACumulativeRedeemablePreferredSharesOfBeneficialInterestParValue001PerShareMember"
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      contextRef="c20200521to20200521"
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      contextRef="c20200521to20200521"
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    <dei:PreCommencementTenderOffer
      contextRef="c20200521to20200521"
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    <dei:PreCommencementIssuerTenderOffer
      contextRef="c20200521to20200521"
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