<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.20.2</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>281</ContextCount>
  <ElementCount>322</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>true</FootnotesReported>
  <SegmentCount>90</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>12</UnitCount>
  <MyReports>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>0001001 - Document - Document and Entity Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/DocumentandEntityInformation</Role>
      <ShortName>Document and Entity Information</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>1001002 - Statement - Consolidated Balance Sheets</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/ConsolidatedBalanceSheets</Role>
      <ShortName>Consolidated Balance Sheets</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>1002003 - Statement - Consolidated Balance Sheets Parentheticals</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/ConsolidatedBalanceSheetsParentheticals</Role>
      <ShortName>Consolidated Balance Sheets Parentheticals</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>1003004 - Statement - Consolidated Statements of Income</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/ConsolidatedStatementsofIncome</Role>
      <ShortName>Consolidated Statements of Income</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>1004005 - Statement - Consolidated Statements of Partners' Equity</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/ConsolidatedStatementsofPartnersEquity</Role>
      <ShortName>Consolidated Statements of Partners' Equity</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>1005006 - Statement - Consolidated Statements of Partners' Equity Parentheticals</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/ConsolidatedStatementsofPartnersEquityParentheticals</Role>
      <ShortName>Consolidated Statements of Partners' Equity Parentheticals</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>1006007 - Statement - Consolidated Statements of Cash Flows</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/ConsolidatedStatementsofCashFlows</Role>
      <ShortName>Consolidated Statements of Cash Flows</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>1007008 - Statement - Consolidated Statements of Cash Flows - Balances per Consolidated Balance Sheets</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/ConsolidatedStatementsofCashFlowsBalancesperConsolidatedBalanceSheets</Role>
      <ShortName>Consolidated Statements of Cash Flows - Balances per Consolidated Balance Sheets</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>2101101 - Disclosure - Nature of Operations and Basis of Presentation</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/NatureofOperationsandBasisofPresentation</Role>
      <ShortName>Nature of Operations and Basis of Presentation</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>2104102 - Disclosure - Unitholders' Equity</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/UnitholdersEquity</Role>
      <ShortName>Unitholders' Equity</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>2106103 - Disclosure - Restricted Cash</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/RestrictedCash</Role>
      <ShortName>Restricted Cash</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>2108104 - Disclosure - Accounts and Other Receivables</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/AccountsandOtherReceivables</Role>
      <ShortName>Accounts and Other Receivables</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>2111105 - Disclosure - Inventory</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/Inventory</Role>
      <ShortName>Inventory</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>2114106 - Disclosure - Property, Plant and Equipment</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/PropertyPlantandEquipment</Role>
      <ShortName>Property, Plant and Equipment</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>2118107 - Disclosure - Derivative Instruments</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/DerivativeInstruments</Role>
      <ShortName>Derivative Instruments</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>2127108 - Disclosure - Other Non-Current Assets</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/OtherNonCurrentAssets</Role>
      <ShortName>Other Non-Current Assets</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>2130109 - Disclosure - Accrued Liabilities</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/AccruedLiabilities</Role>
      <ShortName>Accrued Liabilities</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>2133110 - Disclosure - Debt</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/Debt</Role>
      <ShortName>Debt</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>18</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>2140111 - Disclosure - Revenues from Contracts with Customers</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/RevenuesfromContractswithCustomers</Role>
      <ShortName>Revenues from Contracts with Customers</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>19</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>2146112 - Disclosure - Related Party Transactions</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/RelatedPartyTransactions</Role>
      <ShortName>Related Party Transactions</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>20</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>2152113 - Disclosure - Net Income (Loss) per Common Unit</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/NetIncomeLossperCommonUnit</Role>
      <ShortName>Net Income (Loss) per Common Unit</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>21</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>2155114 - Disclosure - Customer Concentration</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/CustomerConcentration</Role>
      <ShortName>Customer Concentration</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>22</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>2158115 - Disclosure - Supplemental Cash Flow Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/SupplementalCashFlowInformation</Role>
      <ShortName>Supplemental Cash Flow Information</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>23</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>2202201 - Disclosure - Nature of Operations and Basis of Presentation (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/NatureofOperationsandBasisofPresentationPolicies</Role>
      <ShortName>Nature of Operations and Basis of Presentation (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <Position>24</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>2309301 - Disclosure - Accounts and Other Receivables (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/AccountsandOtherReceivablesTables</Role>
      <ShortName>Accounts and Other Receivables (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.cheniere.com/role/AccountsandOtherReceivables</ParentRole>
      <Position>25</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>2312302 - Disclosure - Inventory (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/InventoryTables</Role>
      <ShortName>Inventory (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.cheniere.com/role/Inventory</ParentRole>
      <Position>26</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>2315303 - Disclosure - Property, Plant and Equipment (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/PropertyPlantandEquipmentTables</Role>
      <ShortName>Property, Plant and Equipment (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.cheniere.com/role/PropertyPlantandEquipment</ParentRole>
      <Position>27</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>2319304 - Disclosure - Derivative Instruments (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/DerivativeInstrumentsTables</Role>
      <ShortName>Derivative Instruments (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.cheniere.com/role/DerivativeInstruments</ParentRole>
      <Position>28</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>2328305 - Disclosure - Other Non-Current Assets (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/OtherNonCurrentAssetsTables</Role>
      <ShortName>Other Non-Current Assets (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.cheniere.com/role/OtherNonCurrentAssets</ParentRole>
      <Position>29</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>2331306 - Disclosure - Accrued Liabilities (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/AccruedLiabilitiesTables</Role>
      <ShortName>Accrued Liabilities (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.cheniere.com/role/AccruedLiabilities</ParentRole>
      <Position>30</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>2334307 - Disclosure - Debt (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/DebtTables</Role>
      <ShortName>Debt (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.cheniere.com/role/Debt</ParentRole>
      <Position>31</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>2341308 - Disclosure - Revenues from Contracts with Customers (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/RevenuesfromContractswithCustomersTables</Role>
      <ShortName>Revenues from Contracts with Customers (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.cheniere.com/role/RevenuesfromContractswithCustomers</ParentRole>
      <Position>32</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>2347309 - Disclosure - Related Party Transactions (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/RelatedPartyTransactionsTables</Role>
      <ShortName>Related Party Transactions (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.cheniere.com/role/RelatedPartyTransactions</ParentRole>
      <Position>33</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>2353310 - Disclosure - Net Income (Loss) per Common Unit (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/NetIncomeLossperCommonUnitTables</Role>
      <ShortName>Net Income (Loss) per Common Unit (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.cheniere.com/role/NetIncomeLossperCommonUnit</ParentRole>
      <Position>34</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>2356311 - Disclosure - Customer Concentration (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/CustomerConcentrationTables</Role>
      <ShortName>Customer Concentration (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.cheniere.com/role/CustomerConcentration</ParentRole>
      <Position>35</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>2359312 - Disclosure - Supplemental Cash Flow Information (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/SupplementalCashFlowInformationTables</Role>
      <ShortName>Supplemental Cash Flow Information (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.cheniere.com/role/SupplementalCashFlowInformation</ParentRole>
      <Position>36</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>2403401 - Disclosure - Nature of Operations and Basis of Presentation (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/NatureofOperationsandBasisofPresentationDetails</Role>
      <ShortName>Nature of Operations and Basis of Presentation (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.cheniere.com/role/NatureofOperationsandBasisofPresentationPolicies</ParentRole>
      <Position>37</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>2405402 - Disclosure - Unitholders' Equity (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/UnitholdersEquityDetails</Role>
      <ShortName>Unitholders' Equity (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.cheniere.com/role/UnitholdersEquity</ParentRole>
      <Position>38</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>2407403 - Disclosure - Restricted Cash (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/RestrictedCashDetails</Role>
      <ShortName>Restricted Cash (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.cheniere.com/role/RestrictedCash</ParentRole>
      <Position>39</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>2410404 - Disclosure - Accounts and Other Receivables (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/AccountsandOtherReceivablesDetails</Role>
      <ShortName>Accounts and Other Receivables (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.cheniere.com/role/AccountsandOtherReceivablesTables</ParentRole>
      <Position>40</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>2413405 - Disclosure - Inventory (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/InventoryDetails</Role>
      <ShortName>Inventory (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.cheniere.com/role/InventoryTables</ParentRole>
      <Position>41</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>2416406 - Disclosure - Property, Plant and Equipment - Schedule of Property, Plant and Equipment (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/PropertyPlantandEquipmentScheduleofPropertyPlantandEquipmentDetails</Role>
      <ShortName>Property, Plant and Equipment - Schedule of Property, Plant and Equipment (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>42</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>2417407 - Disclosure - Property, Plant and Equipment - Schedule of Depreciation and Offsets to LNG Terminal Costs (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/PropertyPlantandEquipmentScheduleofDepreciationandOffsetstoLNGTerminalCostsDetails</Role>
      <ShortName>Property, Plant and Equipment - Schedule of Depreciation and Offsets to LNG Terminal Costs (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>43</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>2420408 - Disclosure - Derivative Instruments - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/DerivativeInstrumentsNarrativeDetails</Role>
      <ShortName>Derivative Instruments - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>44</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R45.htm</HtmlFileName>
      <LongName>2421409 - Disclosure - Derivative Instruments - Fair Value of Derivative Assets and Liabilities (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/DerivativeInstrumentsFairValueofDerivativeAssetsandLiabilitiesDetails</Role>
      <ShortName>Derivative Instruments - Fair Value of Derivative Assets and Liabilities (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>45</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R46.htm</HtmlFileName>
      <LongName>2422410 - Disclosure - Derivative Instruments - Fair Value Inputs - Quantitative Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/DerivativeInstrumentsFairValueInputsQuantitativeInformationDetails</Role>
      <ShortName>Derivative Instruments - Fair Value Inputs - Quantitative Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>46</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R47.htm</HtmlFileName>
      <LongName>2423411 - Disclosure - Derivative Instruments - Schedule of Level 3 Activity (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/DerivativeInstrumentsScheduleofLevel3ActivityDetails</Role>
      <ShortName>Derivative Instruments - Schedule of Level 3 Activity (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>47</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R48.htm</HtmlFileName>
      <LongName>2424412 - Disclosure - Derivative Instruments - Fair Value of Derivative Instruments by Balance Sheet Location (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/DerivativeInstrumentsFairValueofDerivativeInstrumentsbyBalanceSheetLocationDetails</Role>
      <ShortName>Derivative Instruments - Fair Value of Derivative Instruments by Balance Sheet Location (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>48</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R49.htm</HtmlFileName>
      <LongName>2425413 - Disclosure - Derivative Instruments - Derivative Instruments, Gain (Loss) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/DerivativeInstrumentsDerivativeInstrumentsGainLossDetails</Role>
      <ShortName>Derivative Instruments - Derivative Instruments, Gain (Loss) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>49</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R50.htm</HtmlFileName>
      <LongName>2426414 - Disclosure - Derivative Instruments - Balance Sheet Presentation Table (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/DerivativeInstrumentsBalanceSheetPresentationTableDetails</Role>
      <ShortName>Derivative Instruments - Balance Sheet Presentation Table (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>50</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R51.htm</HtmlFileName>
      <LongName>2429415 - Disclosure - Other Non-Current Assets (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/OtherNonCurrentAssetsDetails</Role>
      <ShortName>Other Non-Current Assets (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.cheniere.com/role/OtherNonCurrentAssetsTables</ParentRole>
      <Position>51</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R52.htm</HtmlFileName>
      <LongName>2432416 - Disclosure - Accrued Liabilities (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/AccruedLiabilitiesDetails</Role>
      <ShortName>Accrued Liabilities (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.cheniere.com/role/AccruedLiabilitiesTables</ParentRole>
      <Position>52</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R53.htm</HtmlFileName>
      <LongName>2435417 - Disclosure - Debt - Schedule of Debt Instruments (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/DebtScheduleofDebtInstrumentsDetails</Role>
      <ShortName>Debt - Schedule of Debt Instruments (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>53</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R54.htm</HtmlFileName>
      <LongName>2436418 - Disclosure - Debt - Schedule of Issuances (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/DebtScheduleofIssuancesDetails</Role>
      <ShortName>Debt - Schedule of Issuances (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>54</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R55.htm</HtmlFileName>
      <LongName>2437419 - Disclosure - Debt - Credit Facilities Table (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/DebtCreditFacilitiesTableDetails</Role>
      <ShortName>Debt - Credit Facilities Table (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>55</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R56.htm</HtmlFileName>
      <LongName>2438420 - Disclosure - Debt - Interest Expense (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/DebtInterestExpenseDetails</Role>
      <ShortName>Debt - Interest Expense (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>56</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R57.htm</HtmlFileName>
      <LongName>2439421 - Disclosure - Debt - Schedule of Carrying Values and Estimated Fair Values of Debt Instruments (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/DebtScheduleofCarryingValuesandEstimatedFairValuesofDebtInstrumentsDetails</Role>
      <ShortName>Debt - Schedule of Carrying Values and Estimated Fair Values of Debt Instruments (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>57</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R58.htm</HtmlFileName>
      <LongName>2442422 - Disclosure - Revenues from Contracts with Customers - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/RevenuesfromContractswithCustomersNarrativeDetails</Role>
      <ShortName>Revenues from Contracts with Customers - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>58</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R59.htm</HtmlFileName>
      <LongName>2443423 - Disclosure - Revenues from Contracts with Customers - Schedule of Disaggregation of Revenue (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/RevenuesfromContractswithCustomersScheduleofDisaggregationofRevenueDetails</Role>
      <ShortName>Revenues from Contracts with Customers - Schedule of Disaggregation of Revenue (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>59</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R60.htm</HtmlFileName>
      <LongName>2444424 - Disclosure - Revenues from Contracts with Customers - Schedule of Deferred Revenue Reconciliation (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/RevenuesfromContractswithCustomersScheduleofDeferredRevenueReconciliationDetails</Role>
      <ShortName>Revenues from Contracts with Customers - Schedule of Deferred Revenue Reconciliation (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>60</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R61.htm</HtmlFileName>
      <LongName>2445425 - Disclosure - Revenues from Contracts with Customers - Schedule of Transaction Price Allocated to Future Performance Obligations (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/RevenuesfromContractswithCustomersScheduleofTransactionPriceAllocatedtoFuturePerformanceObligationsDetails</Role>
      <ShortName>Revenues from Contracts with Customers - Schedule of Transaction Price Allocated to Future Performance Obligations (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>61</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R62.htm</HtmlFileName>
      <LongName>2448426 - Disclosure - Related Party Transactions - Schedule of Related Party Transactions (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/RelatedPartyTransactionsScheduleofRelatedPartyTransactionsDetails</Role>
      <ShortName>Related Party Transactions - Schedule of Related Party Transactions (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>62</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R63.htm</HtmlFileName>
      <LongName>2449427 - Disclosure - Related Party Transactions - LNG Terminal Capacity Agreements (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/RelatedPartyTransactionsLNGTerminalCapacityAgreementsDetails</Role>
      <ShortName>Related Party Transactions - LNG Terminal Capacity Agreements (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>63</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R64.htm</HtmlFileName>
      <LongName>2450428 - Disclosure - Related Party Transactions - Service Agreements (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/RelatedPartyTransactionsServiceAgreementsDetails</Role>
      <ShortName>Related Party Transactions - Service Agreements (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>64</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R65.htm</HtmlFileName>
      <LongName>2451429 - Disclosure - Related Party Transactions - Other Agreements (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/RelatedPartyTransactionsOtherAgreementsDetails</Role>
      <ShortName>Related Party Transactions - Other Agreements (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>65</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R66.htm</HtmlFileName>
      <LongName>2454430 - Disclosure - Net Income (Loss) per Common Unit (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/NetIncomeLossperCommonUnitDetails</Role>
      <ShortName>Net Income (Loss) per Common Unit (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.cheniere.com/role/NetIncomeLossperCommonUnitTables</ParentRole>
      <Position>66</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R67.htm</HtmlFileName>
      <LongName>2457431 - Disclosure - Customer Concentration (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/CustomerConcentrationDetails</Role>
      <ShortName>Customer Concentration (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.cheniere.com/role/CustomerConcentrationTables</ParentRole>
      <Position>67</Position>
    </Report>
    <Report instance="cqp-20200930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R68.htm</HtmlFileName>
      <LongName>2460432 - Disclosure - Supplemental Cash Flow Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cheniere.com/role/SupplementalCashFlowInformationDetails</Role>
      <ShortName>Supplemental Cash Flow Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.cheniere.com/role/SupplementalCashFlowInformationTables</ParentRole>
      <Position>68</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <InputFiles>
    <File doctype="10-Q" original="cqp-20200930.htm">cqp-20200930.htm</File>
    <File>cqp-20200930.xsd</File>
    <File>cqp-20200930_cal.xml</File>
    <File>cqp-20200930_def.xml</File>
    <File>cqp-20200930_lab.xml</File>
    <File>cqp-20200930_pre.xml</File>
    <File>exhibit101cqp20orm3rdq.htm</File>
    <File>exhibit311cqp20orm3rdq.htm</File>
    <File>exhibit312cqp20orm3rdq.htm</File>
    <File>exhibit321cqp20orm3rdq.htm</File>
    <File>exhibit322cqp20orm3rdq.htm</File>
    <File>exhibit41cqp20orm3rdqtr.htm</File>
  </InputFiles>
  <SupplementalFiles>
    <File>cqp-20200930_g1.jpg</File>
    <File>cqp-20200930_g2.jpg</File>
    <File>cqp-20200930_g3.jpg</File>
    <File>cqp-20200930_g4.jpg</File>
  </SupplementalFiles>
  <BaseTaxonomies>
    <BaseTaxonomy>http://fasb.org/srt/2019-01-31</BaseTaxonomy>
    <BaseTaxonomy>http://xbrl.sec.gov/dei/2019-01-31</BaseTaxonomy>
    <BaseTaxonomy>http://fasb.org/us-gaap/2019-01-31</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
