<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.22.2.2</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>107</ContextCount>
  <ElementCount>203</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>false</FootnotesReported>
  <SegmentCount>19</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>4</UnitCount>
  <MyReports>
    <Report instance="sincerity_i10q-063022.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>00000001 - Document - Cover</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://symbid.com/role/Cover</Role>
      <ShortName>Cover</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="sincerity_i10q-063022.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>00000002 - Statement - Consolidated Balance Sheets (Not Reviewed)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://symbid.com/role/BalanceSheetsNotReviewed</Role>
      <ShortName>Consolidated Balance Sheets (Not Reviewed)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="sincerity_i10q-063022.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>00000003 - Statement - Consolidated Balance Sheets (Not Reviewed) (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://symbid.com/role/BalanceSheetsNotReviewedParenthetical</Role>
      <ShortName>Consolidated Balance Sheets (Not Reviewed) (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="sincerity_i10q-063022.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>00000004 - Statement - Consolidated Statement of Operations (Not Reviewed)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://symbid.com/role/StatementOfOperationsNotReviewed</Role>
      <ShortName>Consolidated Statement of Operations (Not Reviewed)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="sincerity_i10q-063022.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>00000005 - Statement - Consolidated Statement of Operations (Not Reviewed) (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://symbid.com/role/StatementOfOperationsNotReviewedParenthetical</Role>
      <ShortName>Consolidated Statement of Operations (Not Reviewed) (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="sincerity_i10q-063022.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>00000006 - Statement - Consolidated Statement of Changes in Stockholder's Equity / (Deficit) (Not Reviewed)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://symbid.com/role/StatementOfChangesInStockholdersEquityDeficitNotReviewed</Role>
      <ShortName>Consolidated Statement of Changes in Stockholder's Equity / (Deficit) (Not Reviewed)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="sincerity_i10q-063022.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>00000007 - Statement - Consolidated Statement of Cash Flows (Not Reviewed)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://symbid.com/role/StatementOfCashFlowsNotReviewed</Role>
      <ShortName>Consolidated Statement of Cash Flows (Not Reviewed)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="sincerity_i10q-063022.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>00000008 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://symbid.com/role/SummaryOfSignificantAccountingPolicies</Role>
      <ShortName>SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="sincerity_i10q-063022.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>00000009 - Disclosure - Critical Accounting Estimates and Judgments</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://symbid.com/role/CriticalAccountingEstimatesAndJudgments</Role>
      <ShortName>Critical Accounting Estimates and Judgments</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="sincerity_i10q-063022.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>00000010 - Disclosure - Segment Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://symbid.com/role/SegmentInformation</Role>
      <ShortName>Segment Information</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="sincerity_i10q-063022.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>00000011 - Disclosure - Cash and Cash Equivalents</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://symbid.com/role/CashAndCashEquivalents</Role>
      <ShortName>Cash and Cash Equivalents</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="sincerity_i10q-063022.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>00000012 - Disclosure - Account Receivables and Other Assets</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://symbid.com/role/AccountReceivablesAndOtherAssets</Role>
      <ShortName>Account Receivables and Other Assets</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="sincerity_i10q-063022.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>00000013 - Disclosure - Property, Plant and Equipment</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://symbid.com/role/PropertyPlantAndEquipment</Role>
      <ShortName>Property, Plant and Equipment</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="sincerity_i10q-063022.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>00000014 - Disclosure - Accrued and Other Liabilities</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://symbid.com/role/AccruedAndOtherLiabilities</Role>
      <ShortName>Accrued and Other Liabilities</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="sincerity_i10q-063022.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>00000015 - Disclosure - Long-term debt</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://symbid.com/role/Long-termDebt</Role>
      <ShortName>Long-term debt</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="sincerity_i10q-063022.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>00000016 - Disclosure - Line of credit</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://symbid.com/role/LineOfCredit</Role>
      <ShortName>Line of credit</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="sincerity_i10q-063022.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>00000017 - Disclosure - Convertible notes payable and Common stock warrant liability</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://symbid.com/role/ConvertibleNotesPayableAndCommonStockWarrantLiability</Role>
      <ShortName>Convertible notes payable and Common stock warrant liability</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="sincerity_i10q-063022.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>00000018 - Disclosure - Income Tax Expense</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://symbid.com/role/IncomeTaxExpense</Role>
      <ShortName>Income Tax Expense</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>18</Position>
    </Report>
    <Report instance="sincerity_i10q-063022.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>00000019 - Disclosure - Other Comprehensive Earnings</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://symbid.com/role/OtherComprehensiveEarnings</Role>
      <ShortName>Other Comprehensive Earnings</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>19</Position>
    </Report>
    <Report instance="sincerity_i10q-063022.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>00000020 - Disclosure - Capital and Leasing Commitments</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://symbid.com/role/CapitalAndLeasingCommitments</Role>
      <ShortName>Capital and Leasing Commitments</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>20</Position>
    </Report>
    <Report instance="sincerity_i10q-063022.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>00000021 - Disclosure - Contingencies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://symbid.com/role/Contingencies</Role>
      <ShortName>Contingencies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>21</Position>
    </Report>
    <Report instance="sincerity_i10q-063022.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>00000022 - Disclosure - Related Party Transactions</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://symbid.com/role/RelatedPartyTransactions</Role>
      <ShortName>Related Party Transactions</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>22</Position>
    </Report>
    <Report instance="sincerity_i10q-063022.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>00000023 - Disclosure - Events After the Reporting Period</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://symbid.com/role/EventsAfterReportingPeriod</Role>
      <ShortName>Events After the Reporting Period</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>23</Position>
    </Report>
    <Report instance="sincerity_i10q-063022.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>00000024 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://symbid.com/role/SummaryOfSignificantAccountingPoliciesPolicies</Role>
      <ShortName>SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <ParentRole>http://symbid.com/role/CriticalAccountingEstimatesAndJudgments</ParentRole>
      <Position>24</Position>
    </Report>
    <Report instance="sincerity_i10q-063022.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>00000025 - Disclosure - Cash and Cash Equivalents (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://symbid.com/role/CashAndCashEquivalentsTables</Role>
      <ShortName>Cash and Cash Equivalents (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://symbid.com/role/CashAndCashEquivalents</ParentRole>
      <Position>25</Position>
    </Report>
    <Report instance="sincerity_i10q-063022.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>00000026 - Disclosure - Account Receivables and Other Assets (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://symbid.com/role/AccountReceivablesAndOtherAssetsTables</Role>
      <ShortName>Account Receivables and Other Assets (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://symbid.com/role/AccountReceivablesAndOtherAssets</ParentRole>
      <Position>26</Position>
    </Report>
    <Report instance="sincerity_i10q-063022.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>00000027 - Disclosure - Property, Plant and Equipment (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://symbid.com/role/PropertyPlantAndEquipmentTables</Role>
      <ShortName>Property, Plant and Equipment (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://symbid.com/role/PropertyPlantAndEquipment</ParentRole>
      <Position>27</Position>
    </Report>
    <Report instance="sincerity_i10q-063022.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>00000028 - Disclosure - Accrued and Other Liabilities (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://symbid.com/role/AccruedAndOtherLiabilitiesTables</Role>
      <ShortName>Accrued and Other Liabilities (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://symbid.com/role/AccruedAndOtherLiabilities</ParentRole>
      <Position>28</Position>
    </Report>
    <Report instance="sincerity_i10q-063022.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>00000029 - Disclosure - Long-term debt (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://symbid.com/role/Long-termDebtTables</Role>
      <ShortName>Long-term debt (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://symbid.com/role/Long-termDebt</ParentRole>
      <Position>29</Position>
    </Report>
    <Report instance="sincerity_i10q-063022.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>00000030 - Disclosure - Line of credit (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://symbid.com/role/LineOfCreditTables</Role>
      <ShortName>Line of credit (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://symbid.com/role/LineOfCredit</ParentRole>
      <Position>30</Position>
    </Report>
    <Report instance="sincerity_i10q-063022.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>00000031 - Disclosure - Income Tax Expense (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://symbid.com/role/IncomeTaxExpenseTables</Role>
      <ShortName>Income Tax Expense (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://symbid.com/role/IncomeTaxExpense</ParentRole>
      <Position>31</Position>
    </Report>
    <Report instance="sincerity_i10q-063022.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>00000032 - Disclosure - Other Comprehensive Earnings (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://symbid.com/role/OtherComprehensiveEarningsTables</Role>
      <ShortName>Other Comprehensive Earnings (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://symbid.com/role/OtherComprehensiveEarnings</ParentRole>
      <Position>32</Position>
    </Report>
    <Report instance="sincerity_i10q-063022.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>00000033 - Disclosure - Related Party Transactions (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://symbid.com/role/RelatedPartyTransactionsTables</Role>
      <ShortName>Related Party Transactions (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://symbid.com/role/RelatedPartyTransactions</ParentRole>
      <Position>33</Position>
    </Report>
    <Report instance="sincerity_i10q-063022.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>00000034 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://symbid.com/role/SummaryOfSignificantAccountingPoliciesDetailsNarrative</Role>
      <ShortName>SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://symbid.com/role/SummaryOfSignificantAccountingPoliciesPolicies</ParentRole>
      <Position>34</Position>
    </Report>
    <Report instance="sincerity_i10q-063022.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>00000035 - Disclosure - Cash and Cash Equivalents (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://symbid.com/role/CashAndCashEquivalentsDetails</Role>
      <ShortName>Cash and Cash Equivalents (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://symbid.com/role/CashAndCashEquivalentsTables</ParentRole>
      <Position>35</Position>
    </Report>
    <Report instance="sincerity_i10q-063022.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>00000036 - Disclosure - Account Receivables and Other Assets (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://symbid.com/role/AccountReceivablesAndOtherAssetsDetails</Role>
      <ShortName>Account Receivables and Other Assets (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://symbid.com/role/AccountReceivablesAndOtherAssetsTables</ParentRole>
      <Position>36</Position>
    </Report>
    <Report instance="sincerity_i10q-063022.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>00000037 - Disclosure - Property, Plant and Equipment (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://symbid.com/role/PropertyPlantAndEquipmentDetails</Role>
      <ShortName>Property, Plant and Equipment (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://symbid.com/role/PropertyPlantAndEquipmentTables</ParentRole>
      <Position>37</Position>
    </Report>
    <Report instance="sincerity_i10q-063022.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>00000038 - Disclosure - Accrued and Other Liabilities (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://symbid.com/role/AccruedAndOtherLiabilitiesDetails</Role>
      <ShortName>Accrued and Other Liabilities (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://symbid.com/role/AccruedAndOtherLiabilitiesTables</ParentRole>
      <Position>38</Position>
    </Report>
    <Report instance="sincerity_i10q-063022.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>00000039 - Disclosure - Long-Term Debt (Details - Long term debt)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://symbid.com/role/Long-termDebtDetails-LongTermDebt</Role>
      <ShortName>Long-Term Debt (Details - Long term debt)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>39</Position>
    </Report>
    <Report instance="sincerity_i10q-063022.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>00000040 - Disclosure - Long-Term Debt (Details - Debt maturities)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://symbid.com/role/Long-termDebtDetails-DebtMaturities</Role>
      <ShortName>Long-Term Debt (Details - Debt maturities)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>40</Position>
    </Report>
    <Report instance="sincerity_i10q-063022.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>00000041 - Disclosure - Long-term debt (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://symbid.com/role/Long-termDebtDetailsNarrative</Role>
      <ShortName>Long-term debt (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://symbid.com/role/Long-termDebtTables</ParentRole>
      <Position>41</Position>
    </Report>
    <Report instance="sincerity_i10q-063022.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>00000042 - Disclosure - Line of Credit (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://symbid.com/role/LineOfCreditDetails</Role>
      <ShortName>Line of Credit (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>42</Position>
    </Report>
    <Report instance="sincerity_i10q-063022.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>00000043 - Disclosure - Line of credit (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://symbid.com/role/LineOfCreditDetailsNarrative</Role>
      <ShortName>Line of credit (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://symbid.com/role/LineOfCreditTables</ParentRole>
      <Position>43</Position>
    </Report>
    <Report instance="sincerity_i10q-063022.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>00000044 - Disclosure - Convertible notes payable and Common stock warrant liability (Details Narrative)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://symbid.com/role/ConvertibleNotesPayableAndCommonStockWarrantLiabilityDetailsNarrative</Role>
      <ShortName>Convertible notes payable and Common stock warrant liability (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://symbid.com/role/ConvertibleNotesPayableAndCommonStockWarrantLiability</ParentRole>
      <Position>44</Position>
    </Report>
    <Report instance="sincerity_i10q-063022.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R45.htm</HtmlFileName>
      <LongName>00000045 - Disclosure - Income Tax Expense (Details - Income tax expense)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://symbid.com/role/IncomeTaxExpenseDetails-IncomeTaxExpense</Role>
      <ShortName>Income Tax Expense (Details - Income tax expense)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://symbid.com/role/IncomeTaxExpenseTables</ParentRole>
      <Position>45</Position>
    </Report>
    <Report instance="sincerity_i10q-063022.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R46.htm</HtmlFileName>
      <LongName>00000046 - Disclosure - Income Tax Expense (Details - Reconciliation of taxes)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://symbid.com/role/IncomeTaxExpenseDetails-ReconciliationOfTaxes</Role>
      <ShortName>Income Tax Expense (Details - Reconciliation of taxes)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://symbid.com/role/IncomeTaxExpenseTables</ParentRole>
      <Position>46</Position>
    </Report>
    <Report instance="sincerity_i10q-063022.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R47.htm</HtmlFileName>
      <LongName>00000047 - Disclosure - Other Comprehensive Earnings (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://symbid.com/role/OtherComprehensiveEarningsDetails</Role>
      <ShortName>Other Comprehensive Earnings (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://symbid.com/role/OtherComprehensiveEarningsTables</ParentRole>
      <Position>47</Position>
    </Report>
    <Report instance="sincerity_i10q-063022.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R48.htm</HtmlFileName>
      <LongName>00000048 - Disclosure - Related Party Transactions (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://symbid.com/role/RelatedPartyTransactionsDetails</Role>
      <ShortName>Related Party Transactions (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://symbid.com/role/RelatedPartyTransactionsTables</ParentRole>
      <Position>48</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <Logs>
    <Log type="Warning">[dqc-0015-Negative-Values] Fact us-gaap:CostOfRevenue has a value of -22353 which is less than zero. This element should not have a negative value. The preparer should consider if the value is input correctly for this assertion and, after considering the appropriateness of the input, if incorrect, input the amount as a positive (i.e., absolute) value and provide a negated label. The properties of this us-gaap:CostOfRevenue fact are: Context: From2021-04-012021-06-30, Unit: USD, Rule Element Id: 2697. sincerity_i10q-063022.htm 1911</Log>
  </Logs>
  <InputFiles>
    <File doctype="10-Q" original="sincerity_i10q-063022.htm">sincerity_i10q-063022.htm</File>
    <File>sinc-20220630.xsd</File>
    <File>sinc-20220630_cal.xml</File>
    <File>sinc-20220630_def.xml</File>
    <File>sinc-20220630_lab.xml</File>
    <File>sinc-20220630_pre.xml</File>
    <File>sincerity_ex3101.htm</File>
    <File>sincerity_ex3102.htm</File>
    <File>sincerity_ex3201.htm</File>
    <File>sincerity_ex3202.htm</File>
  </InputFiles>
  <SupplementalFiles/>
  <BaseTaxonomies>
    <BaseTaxonomy items="453">http://fasb.org/us-gaap/2022</BaseTaxonomy>
    <BaseTaxonomy items="29">http://xbrl.sec.gov/dei/2022</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
