<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.10.0.1</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>1281</ContextCount>
  <ElementCount>562</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>true</FootnotesReported>
  <SegmentCount>296</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>6</UnitCount>
  <MyReports>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>00000 - Document - Document and Entity Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/DocumentAndEntityInformation</Role>
      <ShortName>Document and Entity Information</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>00100 - Statement - Consolidated Statements of Financial Position</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/ConsolidatedStatementsOfFinancialPosition</Role>
      <ShortName>Consolidated Statements of Financial Position</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>00200 - Statement - Consolidated Statements of Income</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/ConsolidatedStatementsOfIncome</Role>
      <ShortName>Consolidated Statements of Income</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>00300 - Statement - Consolidated Statements of Comprehensive Income</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/ConsolidatedStatementsOfComprehensiveIncome</Role>
      <ShortName>Consolidated Statements of Comprehensive Income</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>00400 - Statement - Consolidated Statements of Changes in Equity</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/ConsolidatedStatementsOfChangesInEquity</Role>
      <ShortName>Consolidated Statements of Changes in Equity</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>00500 - Statement - Consolidated Statements of Cash Flows</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/ConsolidatedStatementsOfCashFlows</Role>
      <ShortName>Consolidated Statements of Cash Flows</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>10100 - Disclosure - General</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsGeneral</Role>
      <ShortName>General</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>10200 - Disclosure - Basis of Preparation of the Financial Statements</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsBasisOfPreparationOfTheFinancialStatements</Role>
      <ShortName>Basis of Preparation of the Financial Statements</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>10300 - Disclosure - Significant Accounting Policies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsSummaryOfSignificantAccountingPolicies</Role>
      <ShortName>Significant Accounting Policies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>10400 - Disclosure - Determination of Fair Values</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsDeterminationOfFairValues</Role>
      <ShortName>Determination of Fair Values</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>10500 - Disclosure - Operating Segments</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsOperatingSegments</Role>
      <ShortName>Operating Segments</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>10600 - Disclosure - Inventories</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsInventories</Role>
      <ShortName>Inventories</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>10700 - Disclosure - Other Receivables</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsOtherReceivables</Role>
      <ShortName>Other Receivables</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>10800 - Disclosure - Investments In Subsidiaries</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsInvestmentsInSubsidiaries</Role>
      <ShortName>Investments In Subsidiaries</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>10900 - Disclosure - Other Non-Current Assets</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsOtherNonCurrentAssets</Role>
      <ShortName>Other Non-Current Assets</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>11000 - Disclosure - Business divestiture</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsBusinessDivestiture</Role>
      <ShortName>Business divestiture</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>11100 - Disclosure - Property Plant and Equipment</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsPropertyPlantAndEquipment</Role>
      <ShortName>Property Plant and Equipment</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>11200 - Disclosure - Intangible Assets</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsIntangibleAssets</Role>
      <ShortName>Intangible Assets</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>18</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>11300 - Disclosure - Impairment Testing</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementImpairmentTesting</Role>
      <ShortName>Impairment Testing</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>19</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>11400 - Disclosure - Derivative Instruments</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsDerivativeInstruments</Role>
      <ShortName>Derivative Instruments</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>20</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>11500 - Disclosure - Credit from Banks and Others</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsCreditFromBanksAndOthers</Role>
      <ShortName>Credit from Banks and Others</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>21</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>11600 - Disclosure - Other Current Liabilities</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsOtherCurrentLiabilities</Role>
      <ShortName>Other Current Liabilities</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>22</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>11700 - Disclosure - Taxes on Income</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsTaxesonIncome</Role>
      <ShortName>Taxes on Income</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>23</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>11800 - Disclosure - Employee Benefits</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsEmployeeBenefits</Role>
      <ShortName>Employee Benefits</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>24</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>11900 - Disclosure - Provisions</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsProvisions</Role>
      <ShortName>Provisions</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>25</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>12000 - Disclosure - Commitments Concessions and Contingent Liabilities</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsCommitmentsConcessionsAndContingentLiabilities</Role>
      <ShortName>Commitments Concessions and Contingent Liabilities</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>26</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>12100 - Disclosure - Equity</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsEquity</Role>
      <ShortName>Equity</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>27</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>12200 - Disclosure - Details of Income Statement Items</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsDetailsOfIncomeStatementItems</Role>
      <ShortName>Details of Income Statement Items</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>28</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>12300 - Disclosure - Financial Instruments and Risk Management</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsFinancialInstrumentsAndRiskManagement</Role>
      <ShortName>Financial Instruments and Risk Management</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>29</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>12400 - Disclosure - Earnings per Share</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsEarningsPerShare</Role>
      <ShortName>Earnings per Share</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>30</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>12500 - Disclosure - Related and Interested Parties</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsRelatedAndInterestedParties</Role>
      <ShortName>Related and Interested Parties</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>31</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>12600 - Disclosure - Group Entities</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsGroupEntities</Role>
      <ShortName>Group Entities</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>32</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>20300 - Disclosure - Significant Accounting Policies (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsSummaryOfSignificantAccountingPoliciesPolicies</Role>
      <ShortName>Significant Accounting Policies (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsSummaryOfSignificantAccountingPolicies</ParentRole>
      <Position>33</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>30300 - Disclosure - Significant Accounting Policies (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsSummaryOfSignificantAccountingPoliciesTables</Role>
      <ShortName>Significant Accounting Policies (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsSummaryOfSignificantAccountingPolicies</ParentRole>
      <Position>34</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>30500 - Disclosure - Operating Segments (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsOperatingSegmentsTables</Role>
      <ShortName>Operating Segments (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsOperatingSegments</ParentRole>
      <Position>35</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>30600 - Disclosure - Inventories (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsInventoriesTables</Role>
      <ShortName>Inventories (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsInventories</ParentRole>
      <Position>36</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>30700 - Disclosure - Other Receivables (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsOtherReceivablesTables</Role>
      <ShortName>Other Receivables (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsOtherReceivables</ParentRole>
      <Position>37</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>30800 - Disclosure - Investments In Subsidiaries (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsInvestmentsInSubsidiariesTables</Role>
      <ShortName>Investments In Subsidiaries (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsInvestmentsInSubsidiaries</ParentRole>
      <Position>38</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>30900 - Disclosure - Other Non-Current Assets (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsOtherNonCurrentAssetsTables</Role>
      <ShortName>Other Non-Current Assets (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsOtherNonCurrentAssets</ParentRole>
      <Position>39</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>31000 - Disclosure - Business Divestiture (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsBusinessDivestitureTables</Role>
      <ShortName>Business Divestiture (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <Position>40</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>31100 - Disclosure - Property Plant and Equipment (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsPropertyPlantAndEquipmentTables</Role>
      <ShortName>Property Plant and Equipment (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsPropertyPlantAndEquipment</ParentRole>
      <Position>41</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>31200 - Disclosure - Intangible Assets (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsIntangibleAssetsTables</Role>
      <ShortName>Intangible Assets (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsIntangibleAssets</ParentRole>
      <Position>42</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>31300 - Disclosure - Impairment Testing (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementImpairmentTestingTables</Role>
      <ShortName>Impairment Testing (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementImpairmentTesting</ParentRole>
      <Position>43</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>31400 - Disclosure - Derivative Instruments (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsDerivativeInstrumentsTables</Role>
      <ShortName>Derivative Instruments (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsDerivativeInstruments</ParentRole>
      <Position>44</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R45.htm</HtmlFileName>
      <LongName>31500 - Disclosure - Credit from Banks and Others (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsCreditFromBanksAndOthersTables</Role>
      <ShortName>Credit from Banks and Others (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsCreditFromBanksAndOthers</ParentRole>
      <Position>45</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R46.htm</HtmlFileName>
      <LongName>31600 - Disclosure - Other Current Liabilities (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsOtherCurrentLiabilitiesTables</Role>
      <ShortName>Other Current Liabilities (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsOtherCurrentLiabilities</ParentRole>
      <Position>46</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R47.htm</HtmlFileName>
      <LongName>31700 - Disclosure - Taxes on Income (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsTaxesonIncomeTables</Role>
      <ShortName>Taxes on Income (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsTaxesonIncome</ParentRole>
      <Position>47</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R48.htm</HtmlFileName>
      <LongName>31800 - Disclosure - Employee Benefits (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsEmployeeBenefitsTables</Role>
      <ShortName>Employee Benefits (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsEmployeeBenefits</ParentRole>
      <Position>48</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R49.htm</HtmlFileName>
      <LongName>31900 - Disclosure - Provisions (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsProvisionsTables</Role>
      <ShortName>Provisions (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsProvisions</ParentRole>
      <Position>49</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R50.htm</HtmlFileName>
      <LongName>32100 - Disclosure - Equity (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsEquityTables</Role>
      <ShortName>Equity (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsEquity</ParentRole>
      <Position>50</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R51.htm</HtmlFileName>
      <LongName>32200 - Disclosure - Details of Income Statement Items (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsDetailsOfIncomeStatementItemsTables</Role>
      <ShortName>Details of Income Statement Items (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsDetailsOfIncomeStatementItems</ParentRole>
      <Position>51</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R52.htm</HtmlFileName>
      <LongName>32300 - Disclosure - Financial Instruments and Risk Management (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsFinancialInstrumentsAndRiskManagementTables</Role>
      <ShortName>Financial Instruments and Risk Management (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsFinancialInstrumentsAndRiskManagement</ParentRole>
      <Position>52</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R53.htm</HtmlFileName>
      <LongName>32400 - Disclosure - Earnings per Share (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsEarningsPerShareTables</Role>
      <ShortName>Earnings per Share (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsEarningsPerShare</ParentRole>
      <Position>53</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R54.htm</HtmlFileName>
      <LongName>32500 - Disclosure - Related and Interested Parties (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsRelatedAndInterestedPartiesTables</Role>
      <ShortName>Related and Interested Parties (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsRelatedAndInterestedParties</ParentRole>
      <Position>54</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R55.htm</HtmlFileName>
      <LongName>32600 - Disclosure - Group Entities (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsGroupEntitiesTables</Role>
      <ShortName>Group Entities (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsGroupEntities</ParentRole>
      <Position>55</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R56.htm</HtmlFileName>
      <LongName>40300 - Disclosure - Significant Accounting Policies (Schedule of Estimated Useful LIves of Property, Plant and Equipment) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsSummaryOfSignificantAccountingPoliciesDepreciationDetails</Role>
      <ShortName>Significant Accounting Policies (Schedule of Estimated Useful LIves of Property, Plant and Equipment) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsSummaryOfSignificantAccountingPoliciesTables</ParentRole>
      <Position>56</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R57.htm</HtmlFileName>
      <LongName>40301 - Disclosure - Significant Accounting Policies (Schedule of Estimated Useful LIves of Intangible Assets) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsSummaryOfSignificantAccountingPoliciesAmortizationDetails</Role>
      <ShortName>Significant Accounting Policies (Schedule of Estimated Useful LIves of Intangible Assets) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsSummaryOfSignificantAccountingPoliciesTables</ParentRole>
      <Position>57</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R58.htm</HtmlFileName>
      <LongName>40500 - Disclosure - Operating Segments (Operating Segment Data) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsOperatingSegmentsOperatingSegmentDataDetails</Role>
      <ShortName>Operating Segments (Operating Segment Data) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsOperatingSegmentsTables</ParentRole>
      <Position>58</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R59.htm</HtmlFileName>
      <LongName>40501 - Disclosure - Operating Segments (Sales by Geographical Location of the Customer) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsOperatingSegmentsSalesByGeographicalLocationOfTheCustomerDetails</Role>
      <ShortName>Operating Segments (Sales by Geographical Location of the Customer) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsOperatingSegmentsTables</ParentRole>
      <Position>59</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R60.htm</HtmlFileName>
      <LongName>40502 - Disclosure - Operating Segments (Sales by geographical location of the customer by Operating Segments) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsOperatingSegmentsSalesByGeographicalLocationOfTheCustomerByOperatingSegmentsDetails</Role>
      <ShortName>Operating Segments (Sales by geographical location of the customer by Operating Segments) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsOperatingSegmentsTables</ParentRole>
      <Position>60</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R61.htm</HtmlFileName>
      <LongName>40503 - Disclosure - Operating Segments (Sales by Geographical Location of the Assets) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsOperatingSegmentsSalesByGeographicalLocationOfTheAssetsDetails</Role>
      <ShortName>Operating Segments (Sales by Geographical Location of the Assets) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsOperatingSegmentsTables</ParentRole>
      <Position>61</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R62.htm</HtmlFileName>
      <LongName>40504 - Disclosure - Operating Segments (Operating Income-Loss by Geographical Location of the Assets) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsOperatingSegmentsOperatingIncomeLossByGeographicalLocationOfTheAssetsDetails</Role>
      <ShortName>Operating Segments (Operating Income-Loss by Geographical Location of the Assets) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsOperatingSegmentsTables</ParentRole>
      <Position>62</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R63.htm</HtmlFileName>
      <LongName>40505 - Disclosure - Operating Segments (Non Current Assets by Geographical Location of the Assets) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsOperatingSegmentsNonCurrentAssetsByGeographicalLocationOfTheAssetsDetails</Role>
      <ShortName>Operating Segments (Non Current Assets by Geographical Location of the Assets) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsOperatingSegmentsTables</ParentRole>
      <Position>63</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R64.htm</HtmlFileName>
      <LongName>40600 - Disclosure - Inventories (Information) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsInventoriesInformationDetails</Role>
      <ShortName>Inventories (Information) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsInventoriesTables</ParentRole>
      <Position>64</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R65.htm</HtmlFileName>
      <LongName>40700 - Disclosure - Other Receivables (Information) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsOtherReceivablesInformationDetails</Role>
      <ShortName>Other Receivables (Information) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsOtherReceivablesTables</ParentRole>
      <Position>65</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R66.htm</HtmlFileName>
      <LongName>40800 - Disclosure - Investments in Subsidiaries (Non-Controlling Interests in Subsidiaries - Balance Sheet) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsInvestmentsInSubsidiariesNonControllingInterestsInSubsidiariesDetails</Role>
      <ShortName>Investments in Subsidiaries (Non-Controlling Interests in Subsidiaries - Balance Sheet) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>66</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R67.htm</HtmlFileName>
      <LongName>40801 - Disclosure - Investments in Subsidiaries and Investee Companies (Non-Controlling Interests in Subsidiaries - Profit and Loss) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsInvestmentsInSubsidiariesAndInvesteeCompaniesNonControllingInterestsInSubsidiariesPLDetails</Role>
      <ShortName>Investments in Subsidiaries and Investee Companies (Non-Controlling Interests in Subsidiaries - Profit and Loss) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>67</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R68.htm</HtmlFileName>
      <LongName>40900 - Disclosure - Other Non-Current Assets (Information) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsOtherNonCurrentAssetsInformationDetails</Role>
      <ShortName>Other Non-Current Assets (Information) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsOtherNonCurrentAssetsTables</ParentRole>
      <Position>68</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R69.htm</HtmlFileName>
      <LongName>41000 - Disclosure - Business Divestiture (Narratives) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsBusinessDivestureNarrativesDetails</Role>
      <ShortName>Business Divestiture (Narratives) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsBusinessDivestitureTables</ParentRole>
      <Position>69</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R70.htm</HtmlFileName>
      <LongName>41001 - Disclosure - Business Divestiture (Effect Of Businesses Divestitures) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsBusinessDivestitureEffectOfBusinessesDivestituresDetails</Role>
      <ShortName>Business Divestiture (Effect Of Businesses Divestitures) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsBusinessDivestitureTables</ParentRole>
      <Position>70</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R71.htm</HtmlFileName>
      <LongName>41100 - Disclosure - Property Plant and Equipment (Information) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsPropertyPlantAndEquipmentInformationDetails</Role>
      <ShortName>Property Plant and Equipment (Information) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsPropertyPlantAndEquipmentTables</ParentRole>
      <Position>71</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R72.htm</HtmlFileName>
      <LongName>41200 - Disclosure - Intangible Assets (Composition) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsIntangibleAssetsCompositionDetails</Role>
      <ShortName>Intangible Assets (Composition) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsIntangibleAssetsTables</ParentRole>
      <Position>72</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R73.htm</HtmlFileName>
      <LongName>41201 - Disclosure - Intangible Assets (Total Book Value of Intangible Assets ) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsIntangibleAssetsTotalBookValueOfIntangibleAssetsDetails</Role>
      <ShortName>Intangible Assets (Total Book Value of Intangible Assets ) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsIntangibleAssetsTables</ParentRole>
      <Position>73</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R74.htm</HtmlFileName>
      <LongName>41300 - Disclosure - Impairment Testing (Narratives) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementImpairmentTestingNarrativesDetails</Role>
      <ShortName>Impairment Testing (Narratives) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementImpairmentTestingTables</ParentRole>
      <Position>74</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R75.htm</HtmlFileName>
      <LongName>41301 - Disclosure - Impairment Testing (Carrying Amounts of Intangible Assets) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsImpairmentTestingCarryingAmountsOfIntangibleAssetsDetails</Role>
      <ShortName>Impairment Testing (Carrying Amounts of Intangible Assets) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementImpairmentTestingTables</ParentRole>
      <Position>75</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R76.htm</HtmlFileName>
      <LongName>41400 - Disclosure - Derivative Instruments (Information) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsDerivativeInstrumentsInformationDetails</Role>
      <ShortName>Derivative Instruments (Information) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsDerivativeInstrumentsTables</ParentRole>
      <Position>76</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R77.htm</HtmlFileName>
      <LongName>41500 - Disclosure - Credit from Banks and Others (Narratives) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsCreditFromBanksAndOthersNarrativesDetails</Role>
      <ShortName>Credit from Banks and Others (Narratives) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsCreditFromBanksAndOthersTables</ParentRole>
      <Position>77</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R78.htm</HtmlFileName>
      <LongName>41501 - Disclosure - Credit from Banks and Others (Composition) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsCreditFromBanksAndOthersCompositionDetails</Role>
      <ShortName>Credit from Banks and Others (Composition) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsCreditFromBanksAndOthersTables</ParentRole>
      <Position>78</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R79.htm</HtmlFileName>
      <LongName>41502 - Disclosure - Credit from Banks and Others (Yearly movement in Credit from Banks and Others) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsCreditFromBanksAndOthersYearlyMovementInCreditFromBanksAndOthersDetails</Role>
      <ShortName>Credit from Banks and Others (Yearly movement in Credit from Banks and Others) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsCreditFromBanksAndOthersTables</ParentRole>
      <Position>79</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R80.htm</HtmlFileName>
      <LongName>41503 - Disclosure - Credit from Banks and Others (Maturity periods) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsCreditFromBanksAndOthersMaturityPeriodsDetails</Role>
      <ShortName>Credit from Banks and Others (Maturity periods) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsCreditFromBanksAndOthersTables</ParentRole>
      <Position>80</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R81.htm</HtmlFileName>
      <LongName>41504 - Disclosure - Credit from Banks and Others (Restrictions on the Group Relating to the Receipt of Credit) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsCreditFromBanksAndOthersRestrictionsOnTheGroupRelatingToTheReceiptOfCreditDetails</Role>
      <ShortName>Credit from Banks and Others (Restrictions on the Group Relating to the Receipt of Credit) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsCreditFromBanksAndOthersTables</ParentRole>
      <Position>81</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R82.htm</HtmlFileName>
      <LongName>41505 - Disclosure - Credit from Banks and Others (Sale of Receivables under Securitization Transaction) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsCreditFromBanksAndOthersSaleOfReceivablesUnderSecuritizationTransactionDetails</Role>
      <ShortName>Credit from Banks and Others (Sale of Receivables under Securitization Transaction) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsCreditFromBanksAndOthersTables</ParentRole>
      <Position>82</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R83.htm</HtmlFileName>
      <LongName>41506 - Disclosure - Credit from Banks and Others (Information on Material Loans and Debentures) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsCreditFromBanksAndOthersInformationOnMaterialLoansAndDebenturesDetails</Role>
      <ShortName>Credit from Banks and Others (Information on Material Loans and Debentures) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsCreditFromBanksAndOthersTables</ParentRole>
      <Position>83</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R84.htm</HtmlFileName>
      <LongName>41507 - Disclosure - Credit from Banks and Others (Credit Facilities) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsCreditFromBanksAndOthersCreditFacilitiesDetails</Role>
      <ShortName>Credit from Banks and Others (Credit Facilities) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsCreditFromBanksAndOthersTables</ParentRole>
      <Position>84</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R85.htm</HtmlFileName>
      <LongName>41600 - Disclosure - Other Current Liabilities (Information) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsOtherCurrentLiabilitiesInformationDetails</Role>
      <ShortName>Other Current Liabilities (Information) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsOtherCurrentLiabilitiesTables</ParentRole>
      <Position>85</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R86.htm</HtmlFileName>
      <LongName>41700 - Disclosure - Taxes on Income (Narratives) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsTaxesOnIncomeNarrativesDetails</Role>
      <ShortName>Taxes on Income (Narratives) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsTaxesonIncomeTables</ParentRole>
      <Position>86</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R87.htm</HtmlFileName>
      <LongName>41701 - Disclosure - Taxes on Income (Tax rates of subsidiaries outside Israel) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsTaxesOnIncomeTaxRatesOfSubsidiariesOutsideIsraelDetails</Role>
      <ShortName>Taxes on Income (Tax rates of subsidiaries outside Israel) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsTaxesonIncomeTables</ParentRole>
      <Position>87</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R88.htm</HtmlFileName>
      <LongName>41702 - Disclosure - Taxes on Income (Deferred income taxes) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsTaxesOnIncomeDeferredIncomeTaxesDetails</Role>
      <ShortName>Taxes on Income (Deferred income taxes) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsTaxesonIncomeTables</ParentRole>
      <Position>88</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R89.htm</HtmlFileName>
      <LongName>41703 - Disclosure - Taxes on Income (Deferred Taxes by Currency) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsTaxesOnIncomeDeferredTaxesByCurrencyDetails</Role>
      <ShortName>Taxes on Income (Deferred Taxes by Currency) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsTaxesonIncomeTables</ParentRole>
      <Position>89</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R90.htm</HtmlFileName>
      <LongName>41704 - Disclosure - Taxes on Income (Composition) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsTaxesOnIncomeCompositionDetails</Role>
      <ShortName>Taxes on Income (Composition) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsTaxesonIncomeTables</ParentRole>
      <Position>90</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R91.htm</HtmlFileName>
      <LongName>41705 - Disclosure - Taxes on Income (Theoretical Tax) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsTaxesOnIncomeTheoreticalTaxDetails</Role>
      <ShortName>Taxes on Income (Theoretical Tax) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsTaxesonIncomeTables</ParentRole>
      <Position>91</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R92.htm</HtmlFileName>
      <LongName>41706 - Disclosure - Taxes on Income (Items Recorded in Equity) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsTaxesOnIncomeItemsRecordedInEquityDetails</Role>
      <ShortName>Taxes on Income (Items Recorded in Equity) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsTaxesonIncomeTables</ParentRole>
      <Position>92</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R93.htm</HtmlFileName>
      <LongName>41800 - Disclosure - Employee Benefits (Narratives) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsEmployeeBenefitsNarrativesDetails</Role>
      <ShortName>Employee Benefits (Narratives) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsEmployeeBenefitsTables</ParentRole>
      <Position>93</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R94.htm</HtmlFileName>
      <LongName>41801 - Disclosure - Employee Benefits (Composition of Employee Benefits) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsEmployeeBenefitsCompositionOfEmployeeBenefitsDetails</Role>
      <ShortName>Employee Benefits (Composition of Employee Benefits) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsEmployeeBenefitsTables</ParentRole>
      <Position>94</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R95.htm</HtmlFileName>
      <LongName>41802 - Disclosure - Employee Benefits (Composition of Fair Value of the Plan Assets) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsEmployeeBenefitsCompositionOfFairValueOfThePlanAssetsDetails</Role>
      <ShortName>Employee Benefits (Composition of Fair Value of the Plan Assets) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsEmployeeBenefitsTables</ParentRole>
      <Position>95</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R96.htm</HtmlFileName>
      <LongName>41803 - Disclosure - Employee Benefits (Movement in Net Defined Benefit Assets Liabilities and in their Components) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsEmployeeBenefitsMovementInNetDefinedBenefitAssetsLiabilitiesAndInTheirComponentsDetails</Role>
      <ShortName>Employee Benefits (Movement in Net Defined Benefit Assets Liabilities and in their Components) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsEmployeeBenefitsTables</ParentRole>
      <Position>96</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R97.htm</HtmlFileName>
      <LongName>41804 - Disclosure - Employee Benefits (Actuarial Assumptions) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsEmployeeBenefitsActuarialAssumptionsDetails</Role>
      <ShortName>Employee Benefits (Actuarial Assumptions) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsEmployeeBenefitsTables</ParentRole>
      <Position>97</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R98.htm</HtmlFileName>
      <LongName>41805 - Disclosure - Employee Benefits (Sensitivity Analysis) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsEmployeeBenefitsSensitivityAnalysisDetails</Role>
      <ShortName>Employee Benefits (Sensitivity Analysis) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsEmployeeBenefitsTables</ParentRole>
      <Position>98</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R99.htm</HtmlFileName>
      <LongName>41900 - Disclosure - Provisions (Information) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsProvisionsInformationDetails</Role>
      <ShortName>Provisions (Information) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsProvisionsTables</ParentRole>
      <Position>99</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R100.htm</HtmlFileName>
      <LongName>42000 - Disclosure - Commitments, Concessions and Contingent Liabilities (Narratives) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsCommitmentsConcessionsAndContingentLiabilitiesNarrativesDetails</Role>
      <ShortName>Commitments, Concessions and Contingent Liabilities (Narratives) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>100</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R101.htm</HtmlFileName>
      <LongName>42100 - Disclosure - Equity (Narratives) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsEquityNarrativesDetails</Role>
      <ShortName>Equity (Narratives) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsEquityTables</ParentRole>
      <Position>101</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R102.htm</HtmlFileName>
      <LongName>42101 - Disclosure - Equity (Composition) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsEquityCompositionDetails</Role>
      <ShortName>Equity (Composition) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsEquityTables</ParentRole>
      <Position>102</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R103.htm</HtmlFileName>
      <LongName>42102 - Disclosure - Equity (Reconciliation of the Number of Shares Outstanding) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsEquityTheReconciliationOfTheNumberOfSharesOutstandingAtTheBeginningAndAtTheEndOfTheYearDetails</Role>
      <ShortName>Equity (Reconciliation of the Number of Shares Outstanding) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsEquityTables</ParentRole>
      <Position>103</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R104.htm</HtmlFileName>
      <LongName>42103 - Disclosure - Equity (Share-based Payments to Employees, Non-marketable Options) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsEquitySharebasedPaymentsToEmployeesNonMarketableOptionsDetails</Role>
      <ShortName>Equity (Share-based Payments to Employees, Non-marketable Options) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsEquityTables</ParentRole>
      <Position>104</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R105.htm</HtmlFileName>
      <LongName>42104 - Disclosure - Equity (Share-based Payments to Employees, Non-marketable Options, Grants Parameters) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsEquitySharebasedPaymentsToEmployeesNonMarketableOptionsGrantsParametersDetails</Role>
      <ShortName>Equity (Share-based Payments to Employees, Non-marketable Options, Grants Parameters) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsEquityTables</ParentRole>
      <Position>105</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R106.htm</HtmlFileName>
      <LongName>42105 - Disclosure - Equity (Share-based Payments to Employees, Non-marketable Options, Movement) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsEquitySharebasedPaymentsToEmployeesNonMarketableOptionsMovementDetails</Role>
      <ShortName>Equity (Share-based Payments to Employees, Non-marketable Options, Movement) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsEquityTables</ParentRole>
      <Position>106</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R107.htm</HtmlFileName>
      <LongName>42106 - Disclosure - Equity (Share-based Payments to Employees, Non-marketable Options, Exercise Price) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsEquitySharebasedPaymentsToEmployeesNonMarketableOptionsExercisePriceDetails</Role>
      <ShortName>Equity (Share-based Payments to Employees, Non-marketable Options, Exercise Price) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsEquityTables</ParentRole>
      <Position>107</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R108.htm</HtmlFileName>
      <LongName>42107 - Disclosure - Equity (Share-based Payments to Employees, Non-marketable Options, Number of Options Vested) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsEquitySharebasedPaymentsToEmployeesNonMarketableOptionsNumberOfOptionsVestedDetails</Role>
      <ShortName>Equity (Share-based Payments to Employees, Non-marketable Options, Number of Options Vested) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsEquityTables</ParentRole>
      <Position>108</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R109.htm</HtmlFileName>
      <LongName>42108 - Disclosure - Equity (Share-based Payments to Employees, Non-marketable Options, Range of Exercise Prices) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsEquitySharebasedPaymentsToEmployeesNonMarketableOptionsRangeOfExercisePricesDetails</Role>
      <ShortName>Equity (Share-based Payments to Employees, Non-marketable Options, Range of Exercise Prices) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsEquityTables</ParentRole>
      <Position>109</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R110.htm</HtmlFileName>
      <LongName>42109 - Disclosure - Equity (Share-based Payments to Employees, Non-marketable Options, Average Remaining Contractual Life) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsEquitySharebasedPaymentsToEmployeesNonMarketableOptionsAverageRemainingContractualLifeDetails</Role>
      <ShortName>Equity (Share-based Payments to Employees, Non-marketable Options, Average Remaining Contractual Life) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsEquityTables</ParentRole>
      <Position>110</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R111.htm</HtmlFileName>
      <LongName>42110 - Disclosure - Equity (Share-based Payments to Employees, Restricted Shares) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsEquitySharebasedPaymentsToEmployeesRestrictedSharesDetails</Role>
      <ShortName>Equity (Share-based Payments to Employees, Restricted Shares) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsEquityTables</ParentRole>
      <Position>111</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R112.htm</HtmlFileName>
      <LongName>42111 - Disclosure - Equity (Dividends Distributed to the Company's Shareholders) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsEquityDividendsDistributedToTheCompanysShareholdersDetails</Role>
      <ShortName>Equity (Dividends Distributed to the Company's Shareholders) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsEquityTables</ParentRole>
      <Position>112</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R113.htm</HtmlFileName>
      <LongName>42200 - Disclosure - Details of Income Statement Items (Sales) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsDetailsOfIncomeStatementItemsSalesDetails</Role>
      <ShortName>Details of Income Statement Items (Sales) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsDetailsOfIncomeStatementItemsTables</ParentRole>
      <Position>113</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R114.htm</HtmlFileName>
      <LongName>42201 - Disclosure - Details of Income Statement Items (Expenses) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsDetailsOfIncomeStatementItemsExpensesDetails</Role>
      <ShortName>Details of Income Statement Items (Expenses) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsDetailsOfIncomeStatementItemsTables</ParentRole>
      <Position>114</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R115.htm</HtmlFileName>
      <LongName>42202 - Disclosure - Details of Income Statement Items (Other Income and Expenses) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsDetailsOfIncomeStatementItemsOtherIncomeAndExpensesDetails</Role>
      <ShortName>Details of Income Statement Items (Other Income and Expenses) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsDetailsOfIncomeStatementItemsTables</ParentRole>
      <Position>115</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R116.htm</HtmlFileName>
      <LongName>42203 - Disclosure - Details of Income Statement Items (Financing Income and Expenses) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsDetailsOfIncomeStatementItemsFinancingIncomeAndExpensesDetails</Role>
      <ShortName>Details of Income Statement Items (Financing Income and Expenses) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsDetailsOfIncomeStatementItemsTables</ParentRole>
      <Position>116</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R117.htm</HtmlFileName>
      <LongName>42300 - Disclosure - Financial Instruments and Risk Management (Narratives) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsFinancialInstrumentsAndRiskManagementNarrativesDetails</Role>
      <ShortName>Financial Instruments and Risk Management (Narratives) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsFinancialInstrumentsAndRiskManagementTables</ParentRole>
      <Position>117</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R118.htm</HtmlFileName>
      <LongName>42301 - Disclosure - Financial Instruments and Risk Management (Groups and Measurement Bases of Financial Assets and Financial Liabilities) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsFinancialInstrumentsAndRiskManagementGroupsAndMeasurementBasesOfFinancialAssetsAndFinancialLiabilitiesDetails</Role>
      <ShortName>Financial Instruments and Risk Management (Groups and Measurement Bases of Financial Assets and Financial Liabilities) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsFinancialInstrumentsAndRiskManagementTables</ParentRole>
      <Position>118</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R119.htm</HtmlFileName>
      <LongName>42302 - Disclosure - Financial Instruments and Risk Management (Credit Risk - Maximum Exposure to Credit Risk) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsFinancialInstrumentsAndRiskManagementCreditRiskTheMaximumExposureToCreditRiskAtTheReportingDateDetails</Role>
      <ShortName>Financial Instruments and Risk Management (Credit Risk - Maximum Exposure to Credit Risk) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsFinancialInstrumentsAndRiskManagementTables</ParentRole>
      <Position>119</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R120.htm</HtmlFileName>
      <LongName>42303 - Disclosure - Financial Instruments and Risk Management (Credit Risk - Maximum Exposure to Credit Risk for Trade Receivables by Geographic Region) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsFinancialInstrumentsAndRiskManagementCreditRiskTheMaximumExposureToCreditRiskForTradeReceivablesAtTheReportingDateByGeographicRegionDetails</Role>
      <ShortName>Financial Instruments and Risk Management (Credit Risk - Maximum Exposure to Credit Risk for Trade Receivables by Geographic Region) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsFinancialInstrumentsAndRiskManagementTables</ParentRole>
      <Position>120</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R121.htm</HtmlFileName>
      <LongName>42304 - Disclosure - Financial Instruments and Risk Management (Credit Risk - Aging of Trade Receivables) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsFinancialInstrumentsAndRiskManagementCreditRiskTheAgingOfTradeReceivablesDetails</Role>
      <ShortName>Financial Instruments and Risk Management (Credit Risk - Aging of Trade Receivables) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsFinancialInstrumentsAndRiskManagementTables</ParentRole>
      <Position>121</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R122.htm</HtmlFileName>
      <LongName>42305 - Disclosure - Financial Instruments and Risk Management (Credit Risk - Movement in the Allowance of Doubtful Accounts during the Year) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsFinancialInstrumentsAndRiskManagementCreditRiskTheMovementInTheAllowanceOfDoubtfulAccountsDuringTheYearDetails</Role>
      <ShortName>Financial Instruments and Risk Management (Credit Risk - Movement in the Allowance of Doubtful Accounts during the Year) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsFinancialInstrumentsAndRiskManagementTables</ParentRole>
      <Position>122</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R123.htm</HtmlFileName>
      <LongName>42306 - Disclosure - Financial Instruments and Risk Management (Liquidity Risk) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsFinancialInstrumentsAndRiskManagementLiquidityRiskDetails</Role>
      <ShortName>Financial Instruments and Risk Management (Liquidity Risk) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsFinancialInstrumentsAndRiskManagementTables</ParentRole>
      <Position>123</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R124.htm</HtmlFileName>
      <LongName>42307 - Disclosure - Financial Instruments and Risk Management (Market Risk - Interest Rate Profile) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsFinancialInstrumentsAndRiskManagementMarketRiskInterestRateProfileDetails</Role>
      <ShortName>Financial Instruments and Risk Management (Market Risk - Interest Rate Profile) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsFinancialInstrumentsAndRiskManagementTables</ParentRole>
      <Position>124</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R125.htm</HtmlFileName>
      <LongName>42308 - Disclosure - Financial Instruments and Risk Management (Market Risk - Sensitivity Analysis for Variable Rate Instruments) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsFinancialInstrumentsAndRiskManagementMarketRiskSensitivityAnalysisForVariableRateInstrumentsDetails</Role>
      <ShortName>Financial Instruments and Risk Management (Market Risk - Sensitivity Analysis for Variable Rate Instruments) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsFinancialInstrumentsAndRiskManagementTables</ParentRole>
      <Position>125</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R126.htm</HtmlFileName>
      <LongName>42309 - Disclosure - Financial Instruments and Risk Management (Market Risk - Terms of Derivative Financial Instruments Used to Hedge Interest Risk) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsFinancialInstrumentsAndRiskManagementMarketRiskTermsOfDerivativeFinancialInstrumentsUsedToHedgeInterestRiskDetails</Role>
      <ShortName>Financial Instruments and Risk Management (Market Risk - Terms of Derivative Financial Instruments Used to Hedge Interest Risk) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsFinancialInstrumentsAndRiskManagementTables</ParentRole>
      <Position>126</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R127.htm</HtmlFileName>
      <LongName>42310 - Disclosure - Financial Instruments and Risk Management (Market risk - Sensitivity Analysis Non-derivative Financial Instruments) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsFinancialInstrumentsAndRiskManagementMarketRiskSensitivityAnalysisNonDerivativeFinancialInstrumentsDetails</Role>
      <ShortName>Financial Instruments and Risk Management (Market risk - Sensitivity Analysis Non-derivative Financial Instruments) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsFinancialInstrumentsAndRiskManagementTables</ParentRole>
      <Position>127</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R128.htm</HtmlFileName>
      <LongName>42311 - Disclosure - Financial Instruments and Risk Management (Market risk - Sensitivity Analysis) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsFinancialInstrumentsAndRiskManagementMarketRiskSensitivityAnalysisDetails</Role>
      <ShortName>Financial Instruments and Risk Management (Market risk - Sensitivity Analysis) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsFinancialInstrumentsAndRiskManagementTables</ParentRole>
      <Position>128</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R129.htm</HtmlFileName>
      <LongName>42312 - Disclosure - Financial Instruments and Risk Management (Market risk - Terms of Derivative Financial Instruments Used to Economically Hedge Foreign Currency Risk) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsFinancialInstrumentsAndRiskManagementMarketRiskTermsOfDerivativeFinancialInstrumentsUsedToEconomicallyHedgeForeignCurrencyRiskDetails</Role>
      <ShortName>Financial Instruments and Risk Management (Market risk - Terms of Derivative Financial Instruments Used to Economically Hedge Foreign Currency Risk) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsFinancialInstrumentsAndRiskManagementTables</ParentRole>
      <Position>129</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R130.htm</HtmlFileName>
      <LongName>42313 - Disclosure - Financial Instruments and Risk Management (Market risk - Linkage Terms of Monetary Balances) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsFinancialInstrumentsAndRiskManagementMarketRiskLinkageTermsOfMonetaryBalancesInMillionsOfDollarsDetails</Role>
      <ShortName>Financial Instruments and Risk Management (Market risk - Linkage Terms of Monetary Balances) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsFinancialInstrumentsAndRiskManagementTables</ParentRole>
      <Position>130</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R131.htm</HtmlFileName>
      <LongName>42314 - Disclosure - Financial Instruments and Risk Management (Fair Value of Financial Instruments) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsFinancialInstrumentsAndRiskManagementFairValueOfFinancialInstrumentsDetails</Role>
      <ShortName>Financial Instruments and Risk Management (Fair Value of Financial Instruments) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsFinancialInstrumentsAndRiskManagementTables</ParentRole>
      <Position>131</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R132.htm</HtmlFileName>
      <LongName>42315 - Disclosure - Financial Instruments and Risk Management (Hierarchy of Fair Value) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsFinancialInstrumentsAndRiskManagementHierarchyOfFairValueDetails</Role>
      <ShortName>Financial Instruments and Risk Management (Hierarchy of Fair Value) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsFinancialInstrumentsAndRiskManagementTables</ParentRole>
      <Position>132</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R133.htm</HtmlFileName>
      <LongName>42400 - Disclosure - Earnings per Share (Narratives) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsEarningsPerShareNarrativesDetails</Role>
      <ShortName>Earnings per Share (Narratives) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsEarningsPerShareTables</ParentRole>
      <Position>133</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R134.htm</HtmlFileName>
      <LongName>42401 - Disclosure - Earnings per Share (Basic earnings per share) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsEarningsPerShareBasicEarningsPerShareDetails</Role>
      <ShortName>Earnings per Share (Basic earnings per share) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsEarningsPerShareTables</ParentRole>
      <Position>134</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R135.htm</HtmlFileName>
      <LongName>42402 - Disclosure - Earnings per Share (Weighted-average Number of Ordinary Shares) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsEarningsPerShareWeighted-averageNumberOfOrdinarySharesDetails</Role>
      <ShortName>Earnings per Share (Weighted-average Number of Ordinary Shares) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsEarningsPerShareTables</ParentRole>
      <Position>135</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R136.htm</HtmlFileName>
      <LongName>42403 - Disclosure - Earnings per Share (Weighted-average Number of Ordinary Shares Diluted) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsEarningsPerShareWeightedAverageNumberOfOrdinarySharesDilutedDetails</Role>
      <ShortName>Earnings per Share (Weighted-average Number of Ordinary Shares Diluted) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsEarningsPerShareTables</ParentRole>
      <Position>136</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R137.htm</HtmlFileName>
      <LongName>42500 - Disclosure - Related and Interested Parties (Narratives) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsRelatedAndInterestedPartiesNarrativesDetails</Role>
      <ShortName>Related and Interested Parties (Narratives) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsRelatedAndInterestedPartiesTables</ParentRole>
      <Position>137</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R138.htm</HtmlFileName>
      <LongName>42501 - Disclosure - Related and Interested Parties (Benefits to Key Management Personnel including Directors) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsRelatedAndInterestedPartiesBenefitsToKeyManagementPersonnelIncludingDirectorsDetails</Role>
      <ShortName>Related and Interested Parties (Benefits to Key Management Personnel including Directors) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsRelatedAndInterestedPartiesTables</ParentRole>
      <Position>138</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R139.htm</HtmlFileName>
      <LongName>42502 - Disclosure - Related and Interested Parties (Transactions with Related and Interested Parties) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsRelatedAndInterestedPartiesTransactionsWithRelatedAndInterestedPartiesDetails</Role>
      <ShortName>Related and Interested Parties (Transactions with Related and Interested Parties) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsRelatedAndInterestedPartiesTables</ParentRole>
      <Position>139</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R140.htm</HtmlFileName>
      <LongName>42503 - Disclosure - Related and Interested Parties (Balances with Interested Parties) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsRelatedAndInterestedPartiesBalancesWithInterestedPartiesDetails</Role>
      <ShortName>Related and Interested Parties (Balances with Interested Parties) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsRelatedAndInterestedPartiesTables</ParentRole>
      <Position>140</Position>
    </Report>
    <Report instance="icl-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R141.htm</HtmlFileName>
      <LongName>42600 - Disclosure - Group Entities (Information) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.icl-group.com/role/NotesToFinancialStatementsGroupEntitiesInformationDetails</Role>
      <ShortName>Group Entities (Information) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.icl-group.com/role/NotesToFinancialStatementsGroupEntitiesTables</ParentRole>
      <Position>141</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <InputFiles>
    <File>icl-20181231.xml</File>
    <File>icl-20181231.xsd</File>
    <File>icl-20181231_cal.xml</File>
    <File>icl-20181231_def.xml</File>
    <File>icl-20181231_lab.xml</File>
    <File>icl-20181231_pre.xml</File>
  </InputFiles>
  <SupplementalFiles/>
  <BaseTaxonomies>
    <BaseTaxonomy>http://xbrl.sec.gov/country/2017-01-31</BaseTaxonomy>
    <BaseTaxonomy>http://xbrl.sec.gov/currency/2017-01-31</BaseTaxonomy>
    <BaseTaxonomy>http://fasb.org/srt/2018-01-31</BaseTaxonomy>
    <BaseTaxonomy>http://xbrl.ifrs.org/taxonomy/2018-03-16/ifrs-full</BaseTaxonomy>
    <BaseTaxonomy>http://xbrl.sec.gov/dei/2018-01-31</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
