<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.22.1</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>35</ContextCount>
  <ElementCount>177</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>true</FootnotesReported>
  <SegmentCount>7</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>4</UnitCount>
  <MyReports>
    <Report instance="f10k2021_raphaelpharma.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>000 - Document - Document And Entity Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://raphaelpharmaceuticalinccom/role/DocumentAndEntityInformation</Role>
      <ShortName>Document And Entity Information</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="f10k2021_raphaelpharma.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>001 - Statement - Consolidated Balance Sheets</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://raphaelpharmaceuticalinccom/role/ConsolidatedBalanceSheet</Role>
      <ShortName>Consolidated Balance Sheets</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="f10k2021_raphaelpharma.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>002 - Statement - Consolidated Balance Sheets (Parentheticals)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://raphaelpharmaceuticalinccom/role/ConsolidatedBalanceSheet_Parentheticals</Role>
      <ShortName>Consolidated Balance Sheets (Parentheticals)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="f10k2021_raphaelpharma.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>003 - Statement - Consolidated Statements of Comprehensive Loss</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://raphaelpharmaceuticalinccom/role/ConsolidatedIncomeStatement</Role>
      <ShortName>Consolidated Statements of Comprehensive Loss</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="f10k2021_raphaelpharma.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>004 - Statement - Consolidated Statements of Changes Stockholders' In Equity (Deficit)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://raphaelpharmaceuticalinccom/role/ShareholdersEquityType2or3</Role>
      <ShortName>Consolidated Statements of Changes Stockholders' In Equity (Deficit)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="f10k2021_raphaelpharma.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>005 - Statement - Consolidated Statements of Cash Flows</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://raphaelpharmaceuticalinccom/role/ConsolidatedCashFlow</Role>
      <ShortName>Consolidated Statements of Cash Flows</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="f10k2021_raphaelpharma.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>006 - Disclosure - General</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://raphaelpharmaceuticalinccom/role/General</Role>
      <ShortName>General</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="f10k2021_raphaelpharma.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>007 - Disclosure - Significant Accounting Policies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://raphaelpharmaceuticalinccom/role/SignificantAccountingPolicies</Role>
      <ShortName>Significant Accounting Policies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="f10k2021_raphaelpharma.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>008 - Disclosure - Other Current Assets</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://raphaelpharmaceuticalinccom/role/OtherCurrentAssets</Role>
      <ShortName>Other Current Assets</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="f10k2021_raphaelpharma.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>009 - Disclosure - Other Accounts Payable and Accrued Expenses</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://raphaelpharmaceuticalinccom/role/OtherAccountsPayableandAccruedExpenses</Role>
      <ShortName>Other Accounts Payable and Accrued Expenses</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="f10k2021_raphaelpharma.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>010 - Disclosure - Loan</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://raphaelpharmaceuticalinccom/role/Loan</Role>
      <ShortName>Loan</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="f10k2021_raphaelpharma.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>011 - Disclosure - Contingent Liabilities and Commitments</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://raphaelpharmaceuticalinccom/role/ContingentLiabilitiesandCommitments</Role>
      <ShortName>Contingent Liabilities and Commitments</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="f10k2021_raphaelpharma.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>012 - Disclosure - Stockholders' Equity</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://raphaelpharmaceuticalinccom/role/StockholdersEquity</Role>
      <ShortName>Stockholders' Equity</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="f10k2021_raphaelpharma.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>013 - Disclosure - Related Parties Balances and Transactions</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://raphaelpharmaceuticalinccom/role/RelatedPartiesBalancesandTransactions</Role>
      <ShortName>Related Parties Balances and Transactions</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="f10k2021_raphaelpharma.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>014 - Disclosure - Taxes On Income</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://raphaelpharmaceuticalinccom/role/TaxesOnIncome</Role>
      <ShortName>Taxes On Income</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="f10k2021_raphaelpharma.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>015 - Disclosure - Selected Statements of Comprehensive Loss Data</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://raphaelpharmaceuticalinccom/role/SelectedStatementsofComprehensiveLossData</Role>
      <ShortName>Selected Statements of Comprehensive Loss Data</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="f10k2021_raphaelpharma.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>016 - Disclosure - Accounting Policies, by Policy (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://raphaelpharmaceuticalinccom/role/AccountingPoliciesByPolicy</Role>
      <ShortName>Accounting Policies, by Policy (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <ParentRole>http://raphaelpharmaceuticalinccom/role/SignificantAccountingPolicies</ParentRole>
      <Position>17</Position>
    </Report>
    <Report instance="f10k2021_raphaelpharma.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>017 - Disclosure - Significant Accounting Policies (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://raphaelpharmaceuticalinccom/role/SignificantAccountingPoliciesTables</Role>
      <ShortName>Significant Accounting Policies (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://raphaelpharmaceuticalinccom/role/SignificantAccountingPolicies</ParentRole>
      <Position>18</Position>
    </Report>
    <Report instance="f10k2021_raphaelpharma.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>018 - Disclosure - Other Current Assets (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://raphaelpharmaceuticalinccom/role/OtherCurrentAssetsTables</Role>
      <ShortName>Other Current Assets (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://raphaelpharmaceuticalinccom/role/OtherCurrentAssets</ParentRole>
      <Position>19</Position>
    </Report>
    <Report instance="f10k2021_raphaelpharma.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>019 - Disclosure - Other Accounts Payable and Accrued Expenses (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://raphaelpharmaceuticalinccom/role/OtherAccountsPayableandAccruedExpensesTables</Role>
      <ShortName>Other Accounts Payable and Accrued Expenses (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://raphaelpharmaceuticalinccom/role/OtherAccountsPayableandAccruedExpenses</ParentRole>
      <Position>20</Position>
    </Report>
    <Report instance="f10k2021_raphaelpharma.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>020 - Disclosure - Related Parties Balances and Transactions (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://raphaelpharmaceuticalinccom/role/RelatedPartiesBalancesandTransactionsTables</Role>
      <ShortName>Related Parties Balances and Transactions (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://raphaelpharmaceuticalinccom/role/RelatedPartiesBalancesandTransactions</ParentRole>
      <Position>21</Position>
    </Report>
    <Report instance="f10k2021_raphaelpharma.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>021 - Disclosure - Taxes On Income (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://raphaelpharmaceuticalinccom/role/TaxesOnIncomeTables</Role>
      <ShortName>Taxes On Income (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://raphaelpharmaceuticalinccom/role/TaxesOnIncome</ParentRole>
      <Position>22</Position>
    </Report>
    <Report instance="f10k2021_raphaelpharma.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>022 - Disclosure - Selected Statements of Comprehensive Loss Data (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://raphaelpharmaceuticalinccom/role/SelectedStatementsofComprehensiveLossDataTables</Role>
      <ShortName>Selected Statements of Comprehensive Loss Data (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://raphaelpharmaceuticalinccom/role/SelectedStatementsofComprehensiveLossData</ParentRole>
      <Position>23</Position>
    </Report>
    <Report instance="f10k2021_raphaelpharma.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>023 - Disclosure - General (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://raphaelpharmaceuticalinccom/role/GeneralDetails</Role>
      <ShortName>General (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://raphaelpharmaceuticalinccom/role/General</ParentRole>
      <Position>24</Position>
    </Report>
    <Report instance="f10k2021_raphaelpharma.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>024 - Disclosure - Significant Accounting Policies (Details) - Schedule of net loss per share and the weighted average number of shares</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://raphaelpharmaceuticalinccom/role/ScheduleofnetlosspershareandtheweightedaveragenumberofsharesTable</Role>
      <ShortName>Significant Accounting Policies (Details) - Schedule of net loss per share and the weighted average number of shares</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://raphaelpharmaceuticalinccom/role/SignificantAccountingPoliciesTables</ParentRole>
      <Position>25</Position>
    </Report>
    <Report instance="f10k2021_raphaelpharma.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>025 - Disclosure - Other Current Assets (Details) - Schedule of other current assets</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://raphaelpharmaceuticalinccom/role/ScheduleofothercurrentassetsTable</Role>
      <ShortName>Other Current Assets (Details) - Schedule of other current assets</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://raphaelpharmaceuticalinccom/role/OtherCurrentAssetsTables</ParentRole>
      <Position>26</Position>
    </Report>
    <Report instance="f10k2021_raphaelpharma.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>026 - Disclosure - Other Accounts Payable and Accrued Expenses (Details) - Schedule of other accounts payable and accrued expenses</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://raphaelpharmaceuticalinccom/role/ScheduleofotheraccountspayableandaccruedexpensesTable</Role>
      <ShortName>Other Accounts Payable and Accrued Expenses (Details) - Schedule of other accounts payable and accrued expenses</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://raphaelpharmaceuticalinccom/role/OtherAccountsPayableandAccruedExpensesTables</ParentRole>
      <Position>27</Position>
    </Report>
    <Report instance="f10k2021_raphaelpharma.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>027 - Disclosure - Loan (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://raphaelpharmaceuticalinccom/role/LoanDetails</Role>
      <ShortName>Loan (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://raphaelpharmaceuticalinccom/role/Loan</ParentRole>
      <Position>28</Position>
    </Report>
    <Report instance="f10k2021_raphaelpharma.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>028 - Disclosure - Contingent Liabilities and Commitments (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://raphaelpharmaceuticalinccom/role/ContingentLiabilitiesandCommitmentsDetails</Role>
      <ShortName>Contingent Liabilities and Commitments (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://raphaelpharmaceuticalinccom/role/ContingentLiabilitiesandCommitments</ParentRole>
      <Position>29</Position>
    </Report>
    <Report instance="f10k2021_raphaelpharma.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>029 - Disclosure - Stockholders' Equity (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://raphaelpharmaceuticalinccom/role/StockholdersEquityDetails</Role>
      <ShortName>Stockholders' Equity (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://raphaelpharmaceuticalinccom/role/StockholdersEquity</ParentRole>
      <Position>30</Position>
    </Report>
    <Report instance="f10k2021_raphaelpharma.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>030 - Disclosure -  Related Parties Balances and Transactions (Details) - Schedule of related party balances</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://raphaelpharmaceuticalinccom/role/ScheduleofrelatedpartybalancesTable</Role>
      <ShortName>Related Parties Balances and Transactions (Details) - Schedule of related party balances</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://raphaelpharmaceuticalinccom/role/RelatedPartiesBalancesandTransactionsTables</ParentRole>
      <Position>31</Position>
    </Report>
    <Report instance="f10k2021_raphaelpharma.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>031 - Disclosure -  Related Parties Balances and Transactions (Details) - Schedule of related party transactions</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://raphaelpharmaceuticalinccom/role/ScheduleofrelatedpartytransactionsTable</Role>
      <ShortName>Related Parties Balances and Transactions (Details) - Schedule of related party transactions</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://raphaelpharmaceuticalinccom/role/RelatedPartiesBalancesandTransactionsTables</ParentRole>
      <Position>32</Position>
    </Report>
    <Report instance="f10k2021_raphaelpharma.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>032 - Disclosure - Taxes On Income (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://raphaelpharmaceuticalinccom/role/TaxesOnIncomeDetails</Role>
      <ShortName>Taxes On Income (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://raphaelpharmaceuticalinccom/role/TaxesOnIncomeTables</ParentRole>
      <Position>33</Position>
    </Report>
    <Report instance="f10k2021_raphaelpharma.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>033 - Disclosure - Taxes On Income (Details) - Schedule of presented hereunder are the income tax rates</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://raphaelpharmaceuticalinccom/role/ScheduleofpresentedhereunderaretheincometaxratesTable</Role>
      <ShortName>Taxes On Income (Details) - Schedule of presented hereunder are the income tax rates</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://raphaelpharmaceuticalinccom/role/TaxesOnIncomeTables</ParentRole>
      <Position>34</Position>
    </Report>
    <Report instance="f10k2021_raphaelpharma.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>034 - Disclosure - Taxes On Income (Details) - Schedule of deferred income taxes</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://raphaelpharmaceuticalinccom/role/ScheduleofdeferredincometaxesTable</Role>
      <ShortName>Taxes On Income (Details) - Schedule of deferred income taxes</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://raphaelpharmaceuticalinccom/role/TaxesOnIncomeTables</ParentRole>
      <Position>35</Position>
    </Report>
    <Report instance="f10k2021_raphaelpharma.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>035 - Disclosure - Taxes On Income (Details) - Schedule of statutory tax rate</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://raphaelpharmaceuticalinccom/role/ScheduleofstatutorytaxrateTable</Role>
      <ShortName>Taxes On Income (Details) - Schedule of statutory tax rate</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://raphaelpharmaceuticalinccom/role/TaxesOnIncomeTables</ParentRole>
      <Position>36</Position>
    </Report>
    <Report instance="f10k2021_raphaelpharma.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>036 - Disclosure - Selected Statements of Comprehensive Loss Data (Details) - Schedule of research and development expenses</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://raphaelpharmaceuticalinccom/role/ScheduleofresearchanddevelopmentexpensesTable</Role>
      <ShortName>Selected Statements of Comprehensive Loss Data (Details) - Schedule of research and development expenses</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://raphaelpharmaceuticalinccom/role/SelectedStatementsofComprehensiveLossDataTables</ParentRole>
      <Position>37</Position>
    </Report>
    <Report instance="f10k2021_raphaelpharma.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>037 - Disclosure - Selected Statements of Comprehensive Loss Data (Details) - Schedule of general and administrative expenses</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://raphaelpharmaceuticalinccom/role/ScheduleofgeneralandadministrativeexpensesTable</Role>
      <ShortName>Selected Statements of Comprehensive Loss Data (Details) - Schedule of general and administrative expenses</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://raphaelpharmaceuticalinccom/role/SelectedStatementsofComprehensiveLossDataTables</ParentRole>
      <Position>38</Position>
    </Report>
    <Report instance="f10k2021_raphaelpharma.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>038 - Disclosure - Selected Statements of Comprehensive Loss Data (Details) - Schedule of financial expenses, net</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://raphaelpharmaceuticalinccom/role/ScheduleoffinancialexpensesnetTable</Role>
      <ShortName>Selected Statements of Comprehensive Loss Data (Details) - Schedule of financial expenses, net</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://raphaelpharmaceuticalinccom/role/SelectedStatementsofComprehensiveLossDataTables</ParentRole>
      <Position>39</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <InputFiles>
    <File doctype="10-K" original="f10k2021_raphaelpharma.htm">f10k2021_raphaelpharma.htm</File>
    <File>cik0000141539-20211231.xsd</File>
    <File>cik0000141539-20211231_cal.xml</File>
    <File>cik0000141539-20211231_def.xml</File>
    <File>cik0000141539-20211231_lab.xml</File>
    <File>cik0000141539-20211231_pre.xml</File>
    <File>f10k2021ex31-1_raphael.htm</File>
    <File>f10k2021ex31-2_raphael.htm</File>
    <File>f10k2021ex32-1_raphael.htm</File>
    <File>f10k2021ex32-2_raphael.htm</File>
    <File>f10k2021ex4-1_raphael.htm</File>
  </InputFiles>
  <SupplementalFiles>
    <File>image_001.jpg</File>
    <File>image_002.jpg</File>
    <File>image_003.jpg</File>
  </SupplementalFiles>
  <BaseTaxonomies>
    <BaseTaxonomy items="215">http://fasb.org/us-gaap/2021-01-31</BaseTaxonomy>
    <BaseTaxonomy items="34">http://xbrl.sec.gov/dei/2021q4</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
