<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.22.2</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>155</ContextCount>
  <ElementCount>195</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>false</FootnotesReported>
  <SegmentCount>46</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>5</UnitCount>
  <MyReports>
    <Report instance="scl-20220630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>0001001 - Document - Cover</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.stericycle.com/role/Cover</Role>
      <ShortName>Cover</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="scl-20220630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>1001002 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF INCOME (LOSS) (Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.stericycle.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFINCOMELOSSUnaudited</Role>
      <ShortName>CONDENSED CONSOLIDATED STATEMENTS OF INCOME (LOSS) (Unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="scl-20220630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>1002003 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME (Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.stericycle.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCOMPREHENSIVELOSSINCOMEUnaudited</Role>
      <ShortName>CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME (Unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="scl-20220630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>1003004 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.stericycle.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETSUnaudited</Role>
      <ShortName>CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="scl-20220630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>1004005 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.stericycle.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETSUnauditedParenthetical</Role>
      <ShortName>CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="scl-20220630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>1005006 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.stericycle.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWSUnaudited</Role>
      <ShortName>CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="scl-20220630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>1006007 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.stericycle.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCHANGESINEQUITYUnaudited</Role>
      <ShortName>CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (Unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="scl-20220630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>2101101 - Disclosure - BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.stericycle.com/role/BASISOFPRESENTATIONANDSUMMARYOFSIGNIFICANTACCOUNTINGPOLICIES</Role>
      <ShortName>BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="scl-20220630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>2103102 - Disclosure - REVENUES FROM CONTRACTS WITH CUSTOMERS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.stericycle.com/role/REVENUESFROMCONTRACTSWITHCUSTOMERS</Role>
      <ShortName>REVENUES FROM CONTRACTS WITH CUSTOMERS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="scl-20220630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>2109103 - Disclosure - DIVESTITURES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.stericycle.com/role/DIVESTITURES</Role>
      <ShortName>DIVESTITURES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="scl-20220630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>2111104 - Disclosure - ACQUISITION</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.stericycle.com/role/ACQUISITION</Role>
      <ShortName>ACQUISITION</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="scl-20220630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>2113105 - Disclosure - LONG-TERM DEBT</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.stericycle.com/role/LONGTERMDEBT</Role>
      <ShortName>LONG-TERM DEBT</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="scl-20220630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>2120106 - Disclosure - INCOME TAXES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.stericycle.com/role/INCOMETAXES</Role>
      <ShortName>INCOME TAXES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="scl-20220630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>2122107 - Disclosure - EARNINGS (LOSS) PER COMMON SHARE</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.stericycle.com/role/EARNINGSLOSSPERCOMMONSHARE</Role>
      <ShortName>EARNINGS (LOSS) PER COMMON SHARE</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="scl-20220630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>2126108 - Disclosure - SEGMENT REPORTING</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.stericycle.com/role/SEGMENTREPORTING</Role>
      <ShortName>SEGMENT REPORTING</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="scl-20220630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>2131109 - Disclosure - COMMITMENTS AND CONTINGENCIES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.stericycle.com/role/COMMITMENTSANDCONTINGENCIES</Role>
      <ShortName>COMMITMENTS AND CONTINGENCIES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="scl-20220630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>2202201 - Disclosure - BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.stericycle.com/role/BASISOFPRESENTATIONANDSUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESPolicies</Role>
      <ShortName>BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="scl-20220630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>2304301 - Disclosure - REVENUES FROM CONTRACTS WITH CUSTOMERS (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.stericycle.com/role/REVENUESFROMCONTRACTSWITHCUSTOMERSTables</Role>
      <ShortName>REVENUES FROM CONTRACTS WITH CUSTOMERS (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.stericycle.com/role/REVENUESFROMCONTRACTSWITHCUSTOMERS</ParentRole>
      <Position>18</Position>
    </Report>
    <Report instance="scl-20220630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>2314302 - Disclosure - LONG-TERM DEBT (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.stericycle.com/role/LONGTERMDEBTTables</Role>
      <ShortName>LONG-TERM DEBT (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.stericycle.com/role/LONGTERMDEBT</ParentRole>
      <Position>19</Position>
    </Report>
    <Report instance="scl-20220630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>2323303 - Disclosure - EARNINGS (LOSS) PER COMMON SHARE (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.stericycle.com/role/EARNINGSLOSSPERCOMMONSHARETables</Role>
      <ShortName>EARNINGS (LOSS) PER COMMON SHARE (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.stericycle.com/role/EARNINGSLOSSPERCOMMONSHARE</ParentRole>
      <Position>20</Position>
    </Report>
    <Report instance="scl-20220630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>2327304 - Disclosure - SEGMENT REPORTING (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.stericycle.com/role/SEGMENTREPORTINGTables</Role>
      <ShortName>SEGMENT REPORTING (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.stericycle.com/role/SEGMENTREPORTING</ParentRole>
      <Position>21</Position>
    </Report>
    <Report instance="scl-20220630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>2405401 - Disclosure - REVENUES FROM CONTRACTS WITH CUSTOMERS - Schedule of Revenues Disaggregated by Service, Primary Geographical Regions and Timing of Revenue Recognition (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.stericycle.com/role/REVENUESFROMCONTRACTSWITHCUSTOMERSScheduleofRevenuesDisaggregatedbyServicePrimaryGeographicalRegionsandTimingofRevenueRecognitionDetail</Role>
      <ShortName>REVENUES FROM CONTRACTS WITH CUSTOMERS - Schedule of Revenues Disaggregated by Service, Primary Geographical Regions and Timing of Revenue Recognition (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>22</Position>
    </Report>
    <Report instance="scl-20220630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>2406402 - Disclosure - REVENUES FROM CONTRACTS WITH CUSTOMERS - Narrative (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.stericycle.com/role/REVENUESFROMCONTRACTSWITHCUSTOMERSNarrativeDetail</Role>
      <ShortName>REVENUES FROM CONTRACTS WITH CUSTOMERS - Narrative (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>23</Position>
    </Report>
    <Report instance="scl-20220630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>2407403 - Disclosure - REVENUES FROM CONTRACTS WITH CUSTOMERS - Schedule of Total Contract Acquisition Costs (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.stericycle.com/role/REVENUESFROMCONTRACTSWITHCUSTOMERSScheduleofTotalContractAcquisitionCostsDetail</Role>
      <ShortName>REVENUES FROM CONTRACTS WITH CUSTOMERS - Schedule of Total Contract Acquisition Costs (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>24</Position>
    </Report>
    <Report instance="scl-20220630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>2408404 - Disclosure - REVENUES FROM CONTRACTS WITH CUSTOMERS - Allowance for Credit Loss (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.stericycle.com/role/REVENUESFROMCONTRACTSWITHCUSTOMERSAllowanceforCreditLossDetails</Role>
      <ShortName>REVENUES FROM CONTRACTS WITH CUSTOMERS - Allowance for Credit Loss (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>25</Position>
    </Report>
    <Report instance="scl-20220630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>2410405 - Disclosure - DIVESTITURES - Narrative (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.stericycle.com/role/DIVESTITURESNarrativeDetail</Role>
      <ShortName>DIVESTITURES - Narrative (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>26</Position>
    </Report>
    <Report instance="scl-20220630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>2412406 - Disclosure - ACQUISITION (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.stericycle.com/role/ACQUISITIONDetails</Role>
      <ShortName>ACQUISITION (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.stericycle.com/role/ACQUISITION</ParentRole>
      <Position>27</Position>
    </Report>
    <Report instance="scl-20220630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>2415407 - Disclosure - LONG-TERM DEBT - Schedule of Long-Term Debt (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.stericycle.com/role/LONGTERMDEBTScheduleofLongTermDebtDetail</Role>
      <ShortName>LONG-TERM DEBT - Schedule of Long-Term Debt (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>28</Position>
    </Report>
    <Report instance="scl-20220630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>2416408 - Disclosure - LONG-TERM DEBT - Schedule of Long-Term Debt (Parenthetical) (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.stericycle.com/role/LONGTERMDEBTScheduleofLongTermDebtParentheticalDetail</Role>
      <ShortName>LONG-TERM DEBT - Schedule of Long-Term Debt (Parenthetical) (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>29</Position>
    </Report>
    <Report instance="scl-20220630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>2417409 - Disclosure - LONG-TERM DEBT - Narrative (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.stericycle.com/role/LONGTERMDEBTNarrativeDetail</Role>
      <ShortName>LONG-TERM DEBT - Narrative (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>30</Position>
    </Report>
    <Report instance="scl-20220630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>2418410 - Disclosure - LONG-TERM DEBT - Schedule of Weighted Average Interest Rates on Long-term Debt Excluding Finance Leases (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.stericycle.com/role/LONGTERMDEBTScheduleofWeightedAverageInterestRatesonLongtermDebtExcludingFinanceLeasesDetail</Role>
      <ShortName>LONG-TERM DEBT - Schedule of Weighted Average Interest Rates on Long-term Debt Excluding Finance Leases (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>31</Position>
    </Report>
    <Report instance="scl-20220630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>2419411 - Disclosure - LONG-TERM DEBT - Schedule of Outstanding Letters of Credit and the Unused Portion of Senior Credit Facility (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.stericycle.com/role/LONGTERMDEBTScheduleofOutstandingLettersofCreditandtheUnusedPortionofSeniorCreditFacilityDetail</Role>
      <ShortName>LONG-TERM DEBT - Schedule of Outstanding Letters of Credit and the Unused Portion of Senior Credit Facility (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>32</Position>
    </Report>
    <Report instance="scl-20220630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>2421412 - Disclosure - INCOME TAXES - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.stericycle.com/role/INCOMETAXESAdditionalInformationDetail</Role>
      <ShortName>INCOME TAXES - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>33</Position>
    </Report>
    <Report instance="scl-20220630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>2424413 - Disclosure - EARNINGS (LOSS) PER COMMON SHARE - Computation of Basic and Diluted Earnings (Loss) Per Share (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.stericycle.com/role/EARNINGSLOSSPERCOMMONSHAREComputationofBasicandDilutedEarningsLossPerShareDetail</Role>
      <ShortName>EARNINGS (LOSS) PER COMMON SHARE - Computation of Basic and Diluted Earnings (Loss) Per Share (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.stericycle.com/role/EARNINGSLOSSPERCOMMONSHARETables</ParentRole>
      <Position>34</Position>
    </Report>
    <Report instance="scl-20220630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>2425414 - Disclosure - EARNINGS (LOSS) PER COMMON SHARE - Schedule of Antidilutive Securities Excluded from EPS Calculation (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.stericycle.com/role/EARNINGSLOSSPERCOMMONSHAREScheduleofAntidilutiveSecuritiesExcludedfromEPSCalculationDetail</Role>
      <ShortName>EARNINGS (LOSS) PER COMMON SHARE - Schedule of Antidilutive Securities Excluded from EPS Calculation (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.stericycle.com/role/EARNINGSLOSSPERCOMMONSHARETables</ParentRole>
      <Position>35</Position>
    </Report>
    <Report instance="scl-20220630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>2428415 - Disclosure - SEGMENT REPORTING - Narrative (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.stericycle.com/role/SEGMENTREPORTINGNarrativeDetail</Role>
      <ShortName>SEGMENT REPORTING - Narrative (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>36</Position>
    </Report>
    <Report instance="scl-20220630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>2429416 - Disclosure - SEGMENT REPORTING - Financial Information Concerning Company's Reportable Segments (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.stericycle.com/role/SEGMENTREPORTINGFinancialInformationConcerningCompanysReportableSegmentsDetail</Role>
      <ShortName>SEGMENT REPORTING - Financial Information Concerning Company's Reportable Segments (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>37</Position>
    </Report>
    <Report instance="scl-20220630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>2430417 - Disclosure - SEGMENT REPORTING - Reconciliation of Company's Primary Measure of Segment Profitability Adjusted Income from Operations to Income (loss) from Operations (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.stericycle.com/role/SEGMENTREPORTINGReconciliationofCompanysPrimaryMeasureofSegmentProfitabilityAdjustedIncomefromOperationstoIncomelossfromOperationsDetail</Role>
      <ShortName>SEGMENT REPORTING - Reconciliation of Company's Primary Measure of Segment Profitability Adjusted Income from Operations to Income (loss) from Operations (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>38</Position>
    </Report>
    <Report instance="scl-20220630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>2432418 - Disclosure - COMMITMENTS AND CONTINGENCIES - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.stericycle.com/role/COMMITMENTSANDCONTINGENCIESNarrativeDetails</Role>
      <ShortName>COMMITMENTS AND CONTINGENCIES - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <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-Q" original="scl-20220630.htm">scl-20220630.htm</File>
    <File>scl-20220630.xsd</File>
    <File>scl-20220630_cal.xml</File>
    <File>scl-20220630_def.xml</File>
    <File>scl-20220630_lab.xml</File>
    <File>scl-20220630_pre.xml</File>
    <File>scl-20220630x10qex102.htm</File>
    <File>scl-20220630x10qex311.htm</File>
    <File>scl-20220630x10qex312.htm</File>
    <File>scl-20220630x10qex32.htm</File>
  </InputFiles>
  <SupplementalFiles>
    <File>scl-20220630_g1.gif</File>
    <File>scl-20220630_g2.jpg</File>
  </SupplementalFiles>
  <BaseTaxonomies>
    <BaseTaxonomy items="528">http://fasb.org/us-gaap/2022</BaseTaxonomy>
    <BaseTaxonomy items="30">http://xbrl.sec.gov/dei/2022</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
