<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.22.1</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>221</ContextCount>
  <ElementCount>300</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>false</FootnotesReported>
  <SegmentCount>76</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>7</UnitCount>
  <MyReports>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>100000 - Document - Document and Entity Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/DocumentDocumentAndEntityInformation</Role>
      <ShortName>Document and Entity Information</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>100010 - Statement - Condensed Consolidated Statements of Loss</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/StatementCondensedConsolidatedStatementsOfLoss</Role>
      <ShortName>Condensed Consolidated Statements of Loss</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>100020 - Statement - Condensed Consolidated Statements of Comprehensive Loss</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/StatementCondensedConsolidatedStatementsOfComprehensiveLoss</Role>
      <ShortName>Condensed Consolidated Statements of Comprehensive Loss</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>100030 - Statement - Condensed Consolidated Balance Sheets</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/StatementCondensedConsolidatedBalanceSheets</Role>
      <ShortName>Condensed Consolidated Balance Sheets</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>100040 - Statement - Condensed Consolidated Balance Sheets (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/StatementCondensedConsolidatedBalanceSheetsParenthetical</Role>
      <ShortName>Condensed Consolidated Balance Sheets (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>100050 - Statement - Condensed Consolidated Statements of Cash Flows</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/StatementCondensedConsolidatedStatementsOfCashFlows</Role>
      <ShortName>Condensed Consolidated Statements of Cash Flows</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>100060 - Disclosure - Basis of Presentation and Significant Accounting Policies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/DisclosureBasisOfPresentationAndSignificantAccountingPolicies</Role>
      <ShortName>Basis of Presentation and Significant Accounting Policies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>100070 - Disclosure - Accounting for Stock-Based Compensation</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/DisclosureAccountingForStockBasedCompensation</Role>
      <ShortName>Accounting for Stock-Based Compensation</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>100080 - Disclosure - Acquisitions and Divestitures</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/DisclosureAcquisitionsAndDivestitures</Role>
      <ShortName>Acquisitions and Divestitures</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>100090 - Disclosure - Income Taxes</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/DisclosureIncomeTaxes</Role>
      <ShortName>Income Taxes</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>100100 - Disclosure - Long-Term Debt</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/DisclosureLongTermDebt</Role>
      <ShortName>Long-Term Debt</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>100110 - Disclosure - Fair Value of Financial Instruments</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/DisclosureFairValueOfFinancialInstruments</Role>
      <ShortName>Fair Value of Financial Instruments</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>100120 - Disclosure - Fair Value</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/DisclosureFairValue</Role>
      <ShortName>Fair Value</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>100130 - Disclosure - Leases</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/DisclosureLeases</Role>
      <ShortName>Leases</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>100140 - Disclosure - Stockholders' Deficit</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/DisclosureStockholdersDeficit</Role>
      <ShortName>Stockholders' Deficit</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>100150 - Disclosure - Earnings Per Share</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/DisclosureEarningsPerShare</Role>
      <ShortName>Earnings Per Share</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>100160 - Disclosure - Contingencies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/DisclosureContingencies</Role>
      <ShortName>Contingencies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>100170 - Disclosure - Basis of Presentation and Significant Accounting Policies (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/DisclosureBasisOfPresentationAndSignificantAccountingPoliciesPolicies</Role>
      <ShortName>Basis of Presentation and Significant Accounting Policies (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <ParentRole>http://www.chs.net/20220331/taxonomy/role/DisclosureBasisOfPresentationAndSignificantAccountingPolicies</ParentRole>
      <Position>18</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>100180 - Disclosure - Basis of Presentation and Significant Accounting Policies (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/DisclosureBasisOfPresentationAndSignificantAccountingPoliciesTables</Role>
      <ShortName>Basis of Presentation and Significant Accounting Policies (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.chs.net/20220331/taxonomy/role/DisclosureBasisOfPresentationAndSignificantAccountingPolicies</ParentRole>
      <Position>19</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>100190 - Disclosure - Accounting for Stock-Based Compensation (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/DisclosureAccountingForStockBasedCompensationTables</Role>
      <ShortName>Accounting for Stock-Based Compensation (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.chs.net/20220331/taxonomy/role/DisclosureAccountingForStockBasedCompensation</ParentRole>
      <Position>20</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>100200 - Disclosure - Acquisitions and Divestitures (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/DisclosureAcquisitionsAndDivestituresTables</Role>
      <ShortName>Acquisitions and Divestitures (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.chs.net/20220331/taxonomy/role/DisclosureAcquisitionsAndDivestitures</ParentRole>
      <Position>21</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>100210 - Disclosure - Long-Term Debt (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/DisclosureLongTermDebtTables</Role>
      <ShortName>Long-Term Debt (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.chs.net/20220331/taxonomy/role/DisclosureLongTermDebt</ParentRole>
      <Position>22</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>100220 - Disclosure - Fair Value of Financial Instruments (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/DisclosureFairValueOfFinancialInstrumentsTables</Role>
      <ShortName>Fair Value of Financial Instruments (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.chs.net/20220331/taxonomy/role/DisclosureFairValueOfFinancialInstruments</ParentRole>
      <Position>23</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>100230 - Disclosure - Fair Value (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/DisclosureFairValueTables</Role>
      <ShortName>Fair Value (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.chs.net/20220331/taxonomy/role/DisclosureFairValueOfFinancialInstruments</ParentRole>
      <Position>24</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>100240 - Disclosure - Leases (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/DisclosureLeasesTables</Role>
      <ShortName>Leases (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.chs.net/20220331/taxonomy/role/DisclosureLeases</ParentRole>
      <Position>25</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>100250 - Disclosure - Stockholders' Deficit (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/DisclosureStockholdersDeficitTables</Role>
      <ShortName>Stockholders' Deficit (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.chs.net/20220331/taxonomy/role/DisclosureStockholdersDeficit</ParentRole>
      <Position>26</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>100260 - Disclosure - Earnings Per Share (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/DisclosureEarningsPerShareTables</Role>
      <ShortName>Earnings Per Share (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.chs.net/20220331/taxonomy/role/DisclosureEarningsPerShare</ParentRole>
      <Position>27</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>100270 - Disclosure - Contingencies (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/DisclosureContingenciesTables</Role>
      <ShortName>Contingencies (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.chs.net/20220331/taxonomy/role/DisclosureContingencies</ParentRole>
      <Position>28</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>100280 - Disclosure - Basis of Presentation and Significant Accounting Policies - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/DisclosureBasisOfPresentationAndSignificantAccountingPoliciesAdditionalInformationDetails</Role>
      <ShortName>Basis of Presentation and Significant Accounting Policies - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>29</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>100290 - Disclosure - Basis of Presentation and Significant Accounting Policies - Schedule of Net Operating Revenues (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/DisclosureBasisOfPresentationAndSignificantAccountingPoliciesScheduleOfNetOperatingRevenuesDetails</Role>
      <ShortName>Basis of Presentation and Significant Accounting Policies - Schedule of Net Operating Revenues (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>30</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>100300 - Disclosure - Accounting for Stock-Based Compensation - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/DisclosureAccountingForStockBasedCompensationAdditionalInformationDetails</Role>
      <ShortName>Accounting for Stock-Based Compensation - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>31</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>100310 - Disclosure - Accounting for Stock-Based Compensation - Schedule of Share-based Compensation Expense (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/DisclosureAccountingForStockBasedCompensationScheduleOfShareBasedCompensationExpenseDetails</Role>
      <ShortName>Accounting for Stock-Based Compensation - Schedule of Share-based Compensation Expense (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>32</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>100320 - Disclosure - Accounting for Stock-Based Compensation - Schedule of Share-based Payment Awards, Stock Options, Valuation Assumptions (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/DisclosureAccountingForStockBasedCompensationScheduleOfShareBasedPaymentAwardsStockOptionsValuationAssumptionsDetails</Role>
      <ShortName>Accounting for Stock-Based Compensation - Schedule of Share-based Payment Awards, Stock Options, Valuation Assumptions (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>33</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>100330 - Disclosure - Accounting for Stock-Based Compensation - Schedule of Share-based Compensation, Stock Options, Activity (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/DisclosureAccountingForStockBasedCompensationScheduleOfShareBasedCompensationStockOptionsActivityDetails</Role>
      <ShortName>Accounting for Stock-Based Compensation - Schedule of Share-based Compensation, Stock Options, Activity (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>34</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>100340 - Disclosure - Accounting for Stock-Based Compensation - Schedule of Share-based Compensation, Restricted Stock, Activity (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/DisclosureAccountingForStockBasedCompensationScheduleOfShareBasedCompensationRestrictedStockActivityDetails</Role>
      <ShortName>Accounting for Stock-Based Compensation - Schedule of Share-based Compensation, Restricted Stock, Activity (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>35</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>100350 - Disclosure - Accounting for Stock-Based Compensation - Schedule of Share-based Compensation, Restricted Stock Units, Activity (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/DisclosureAccountingForStockBasedCompensationScheduleOfShareBasedCompensationRestrictedStockUnitsActivityDetails</Role>
      <ShortName>Accounting for Stock-Based Compensation - Schedule of Share-based Compensation, Restricted Stock Units, Activity (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>36</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>100360 - Disclosure - Acquisitions and Divestitures - Acquisitions - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/DisclosureAcquisitionsAndDivestituresAcquisitionsAdditionalInformationDetails</Role>
      <ShortName>Acquisitions and Divestitures - Acquisitions - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>37</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>100370 - Disclosure - Acquisitions and Divestitures - Divestitures - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/DisclosureAcquisitionsAndDivestituresDivestituresAdditionalInformationDetails</Role>
      <ShortName>Acquisitions and Divestitures - Divestitures - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>38</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>100380 - Disclosure - Acquisitions and Divestitures - Schedule of Divestitures (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/DisclosureAcquisitionsAndDivestituresScheduleOfDivestituresDetails</Role>
      <ShortName>Acquisitions and Divestitures - Schedule of Divestitures (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>39</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>100390 - Disclosure - Income Taxes - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/DisclosureIncomeTaxesAdditionalInformationDetails</Role>
      <ShortName>Income Taxes - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>40</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>100400 - Disclosure - Long-Term Debt - Schedule of Debt (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/DisclosureLongTermDebtScheduleOfDebtDetails</Role>
      <ShortName>Long-Term Debt - Schedule of Debt (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>41</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>100410 - Disclosure - Long-Term Debt - Schedule of Debt (Parenthetical) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/DisclosureLongTermDebtScheduleOfDebtParentheticalDetails</Role>
      <ShortName>Long-Term Debt - Schedule of Debt (Parenthetical) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>42</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>100420 - Disclosure - Long-Term Debt - 5.250% Senior Secured Notes, Due 2030 - Additional Information (Details)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/DisclosureLongTermDebt5250SeniorSecuredNotesDue2030AdditionalInformationDetails</Role>
      <ShortName>Long-Term Debt - 5.250% Senior Secured Notes, Due 2030 - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>43</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>100430 - Disclosure - Long-Term Debt - Schedule of Early Redemption Prices on 5.250% Senior Notes, Due 2030 (Details)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/DisclosureLongTermDebtScheduleOfEarlyRedemptionPricesOn5250SeniorNotesDue2030Details</Role>
      <ShortName>Long-Term Debt - Schedule of Early Redemption Prices on 5.250% Senior Notes, Due 2030 (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>44</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R45.htm</HtmlFileName>
      <LongName>100440 - Disclosure - Long-Term Debt - Other Debt - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/DisclosureLongTermDebtOtherDebtAdditionalInformationDetails</Role>
      <ShortName>Long-Term Debt - Other Debt - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>45</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R46.htm</HtmlFileName>
      <LongName>100450 - Disclosure - Fair Value of Financial Instruments - Schedule of Estimated Fair Value of Financial Instruments, by Balance Sheet Grouping (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/DisclosureFairValueOfFinancialInstrumentsScheduleOfEstimatedFairValueOfFinancialInstrumentsByBalanceSheetGroupingDetails</Role>
      <ShortName>Fair Value of Financial Instruments - Schedule of Estimated Fair Value of Financial Instruments, by Balance Sheet Grouping (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>46</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R47.htm</HtmlFileName>
      <LongName>100460 - Disclosure - Fair Value of Financial Instruments - Schedule of Estimated Fair Value of Financial Instruments, by Balance Sheet Grouping (Parenthetical) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/DisclosureFairValueOfFinancialInstrumentsScheduleOfEstimatedFairValueOfFinancialInstrumentsByBalanceSheetGroupingParentheticalDetails</Role>
      <ShortName>Fair Value of Financial Instruments - Schedule of Estimated Fair Value of Financial Instruments, by Balance Sheet Grouping (Parenthetical) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>47</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R48.htm</HtmlFileName>
      <LongName>100470 - Disclosure - Fair Value - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/DisclosureFairValueAdditionalInformationDetails</Role>
      <ShortName>Fair Value - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>48</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R49.htm</HtmlFileName>
      <LongName>100480 - Disclosure - Fair Value - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/DisclosureFairValueScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisDetails</Role>
      <ShortName>Fair Value - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>49</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R50.htm</HtmlFileName>
      <LongName>100490 - Disclosure - Leases - Components of Lease Cost and Rent Expense (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/DisclosureLeasesComponentsOfLeaseCostAndRentExpenseDetails</Role>
      <ShortName>Leases - Components of Lease Cost and Rent Expense (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>50</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R51.htm</HtmlFileName>
      <LongName>100500 - Disclosure - Leases - Supplemental Balance Sheet Information Related to Leases (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/DisclosureLeasesSupplementalBalanceSheetInformationRelatedToLeasesDetails</Role>
      <ShortName>Leases - Supplemental Balance Sheet Information Related to Leases (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>51</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R52.htm</HtmlFileName>
      <LongName>100510 - Disclosure - Leases - Supplemental Cash Flow and Other Information Related to Leases (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/DisclosureLeasesSupplementalCashFlowAndOtherInformationRelatedToLeasesDetails</Role>
      <ShortName>Leases - Supplemental Cash Flow and Other Information Related to Leases (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>52</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R53.htm</HtmlFileName>
      <LongName>100520 - Disclosure - Stockholders' Deficit - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/DisclosureStockholdersDeficitAdditionalInformationDetails</Role>
      <ShortName>Stockholders' Deficit - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>53</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R54.htm</HtmlFileName>
      <LongName>100530 - Disclosure - Stockholders' Deficit - Schedule of Stockholders' Deficit (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/DisclosureStockholdersDeficitScheduleOfStockholdersDeficitDetails</Role>
      <ShortName>Stockholders' Deficit - Schedule of Stockholders' Deficit (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>54</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R55.htm</HtmlFileName>
      <LongName>100540 - Disclosure - Stockholders' Deficit - Schedule of Impact of Noncontrolling Interest to Stockholders' Deficit (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/DisclosureStockholdersDeficitScheduleOfImpactOfNoncontrollingInterestToStockholdersDeficitDetails</Role>
      <ShortName>Stockholders' Deficit - Schedule of Impact of Noncontrolling Interest to Stockholders' Deficit (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>55</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R56.htm</HtmlFileName>
      <LongName>100550 - Disclosure - Earnings Per Share - Schedule of Components of Denominator for Computation of Basic and Diluted Earnings Per Share (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/DisclosureEarningsPerShareScheduleOfComponentsOfDenominatorForComputationOfBasicAndDilutedEarningsPerShareDetails</Role>
      <ShortName>Earnings Per Share - Schedule of Components of Denominator for Computation of Basic and Diluted Earnings Per Share (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>56</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R57.htm</HtmlFileName>
      <LongName>100560 - Disclosure - Earnings Per Share - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/DisclosureEarningsPerShareAdditionalInformationDetails</Role>
      <ShortName>Earnings Per Share - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>57</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R58.htm</HtmlFileName>
      <LongName>100570 - Disclosure - Earnings Per Share - Schedule of Antidilutive Securities (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/DisclosureEarningsPerShareScheduleOfAntidilutiveSecuritiesDetails</Role>
      <ShortName>Earnings Per Share - Schedule of Antidilutive Securities (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>58</Position>
    </Report>
    <Report instance="cyh-10q_20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R59.htm</HtmlFileName>
      <LongName>100580 - Disclosure - Contingencies - Schedule of Reconciliation of the Beginning and Ending Liability Balances in Connection with Probable Contingencies (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.chs.net/20220331/taxonomy/role/DisclosureContingenciesScheduleOfReconciliationOfBeginningAndEndingLiabilityBalancesInConnectionWithProbableContingenciesDetails</Role>
      <ShortName>Contingencies - Schedule of Reconciliation of the Beginning and Ending Liability Balances in Connection with Probable Contingencies (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>59</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="cyh-10q_20220331.htm">cyh-10q_20220331.htm</File>
    <File>cyh-20220331.xsd</File>
    <File>cyh-20220331_cal.xml</File>
    <File>cyh-20220331_def.xml</File>
    <File>cyh-20220331_lab.xml</File>
    <File>cyh-20220331_pre.xml</File>
    <File>cyh-ex101_30.htm</File>
    <File>cyh-ex311_7.htm</File>
    <File>cyh-ex312_9.htm</File>
    <File>cyh-ex321_6.htm</File>
    <File>cyh-ex322_8.htm</File>
  </InputFiles>
  <SupplementalFiles/>
  <BaseTaxonomies>
    <BaseTaxonomy items="646">http://fasb.org/us-gaap/2021-01-31</BaseTaxonomy>
    <BaseTaxonomy items="29">http://xbrl.sec.gov/dei/2021q4</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
