| IRS990/AccountantCompileOrReviewInd | 0 | 0 |
| IRS990/AccountsPayableAccrExpnssGrp/BOYAmt | 0 | 500900992 |
| IRS990/AccountsPayableAccrExpnssGrp/EOYAmt | 0 | 462271244 |
| IRS990/AccountsReceivableGrp/BOYAmt | 0 | 0 |
| IRS990/AccountsReceivableGrp/EOYAmt | 0 | 59958976 |
| IRS990/ActivitiesConductedPrtshpInd | 0 | 0 |
| IRS990/ActivityOrMissionDesc | 0 | SEE SCHEDULE O. WE ENRICH LIVES TO CREATE HEALTHY COMMUNITIES THROUGH ACCESSIBLE, AFFORDABLE, COMPASSIONATE HEALTH CARE. |
| IRS990/AdvertisingGrp/ProgramServicesAmt | 0 | 52844 |
| IRS990/AdvertisingGrp/TotalAmt | 0 | 52844 |
| IRS990/AllOtherExpensesGrp/ProgramServicesAmt | 0 | 443315 |
| IRS990/AllOtherExpensesGrp/TotalAmt | 0 | 443315 |
| IRS990/AnnualDisclosureCoveredPrsnInd | 0 | 1 |
| IRS990/AuditCommitteeInd | 0 | 1 |
| IRS990/BackupWthldComplianceInd | 0 | 1 |
| IRS990/BooksInCareOfDetail/BusinessName/BusinessNameLine1Txt | 0 | CATHY BUKOWSKI VP OF FINANCE |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 7153875511 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 1000 N OAK AVENUE |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | MARSHFIELD |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | WI |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 54449 |
| IRS990/BusinessRlnWith35CtrlEntInd | 0 | 0 |
| IRS990/BusinessRlnWithFamMemInd | 0 | 1 |
| IRS990/BusinessRlnWithOrgMemInd | 0 | 0 |
| IRS990/CashNonInterestBearingGrp/BOYAmt | 0 | 241485704 |
| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 169382335 |
| IRS990/ChangeToOrgDocumentsInd | 0 | 0 |
| IRS990/CntrctRcvdGreaterThan100KCnt | 0 | 0 |
| IRS990/CollectionsOfArtInd | 0 | 1 |
| IRS990/CompCurrentOfcrDirectorsGrp/ManagementAndGeneralAmt | 0 | 1898214 |
| IRS990/CompCurrentOfcrDirectorsGrp/TotalAmt | 0 | 1898214 |
| IRS990/CompensationFromOtherSrcsInd | 0 | 0 |
| IRS990/CompensationProcessCEOInd | 0 | 1 |
| IRS990/CompensationProcessOtherInd | 0 | 1 |
| IRS990/ConferencesMeetingsGrp/ManagementAndGeneralAmt | 0 | 9726 |
| IRS990/ConferencesMeetingsGrp/ProgramServicesAmt | 0 | 1261 |
| IRS990/ConferencesMeetingsGrp/TotalAmt | 0 | 10987 |
| IRS990/ConflictOfInterestPolicyInd | 0 | 1 |
| IRS990/ConservationEasementsInd | 0 | 0 |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | 1 |
| IRS990/CreditCounselingInd | 0 | 0 |
| IRS990/CYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/CYContributionsGrantsAmt | 0 | 18968248 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 139000 |
| IRS990/CYInvestmentIncomeAmt | 0 | 1152256 |
| IRS990/CYOtherExpensesAmt | 0 | 97543408 |
| IRS990/CYOtherRevenueAmt | 0 | -14798 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 202936909 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | -4599088 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 129959295 |
| IRS990/CYTotalExpensesAmt | 0 | 227641703 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 0 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 223042615 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | 1 |
| IRS990/DeductibleArtContributionInd | 0 | 0 |
| IRS990/DeductibleNonCashContriInd | 0 | 0 |
| IRS990/DeferredRevenueGrp/BOYAmt | 0 | 13518239 |
| IRS990/DeferredRevenueGrp/EOYAmt | 0 | 13398532 |
| IRS990/DelegationOfMgmtDutiesInd | 0 | 0 |
| IRS990/DepreciationDepletionGrp/ProgramServicesAmt | 0 | 6635637 |
| IRS990/DepreciationDepletionGrp/TotalAmt | 0 | 6635637 |
| IRS990/Desc | 0 | MARSHFIELD CLINIC, INC., FOUNDED IN 1916, IS A NOT-FOR-PROFIT GROUP MEDICAL PRACTICE ENGAGED IN PROVIDING HEALTHCARE, HEALTHCARE EDUCATION, MEDICAL RESEARCH, AND COMMUNITY SERVICE. MARSHFIELD CLINIC RESEARCH INSTITUTE, A DIVISION OF MARSHFIELD CLINIC, ENGAGES IN MEDICAL AND SCIENTIFIC RESEARCH AND THE PROMOTION OF PUBLIC HEALTH, MEDICAL EDUCATION, AND COMMUNITY SERVICE. |
| IRS990/DescribedInSection501c3Ind | 0 | 1 |
| IRS990/DisregardedEntityInd | 0 | 0 |
| IRS990/DocumentRetentionPolicyInd | 0 | 1 |
| IRS990/DonorAdvisedFundInd | 0 | 0 |
| IRS990/DonorRestrictionNetAssetsGrp/BOYAmt | 0 | 1435470 |
| IRS990/DonorRestrictionNetAssetsGrp/EOYAmt | 0 | 1490768 |
| IRS990/DonorRstrOrQuasiEndowmentsInd | 0 | 1 |
| IRS990/ElectionOfBoardMembersInd | 0 | 1 |
| IRS990/EmployeeCnt | 0 | 929 |
| IRS990/EmploymentTaxReturnsFiledInd | 0 | 1 |
| IRS990/EngagedInExcessBenefitTransInd | 0 | 0 |
| IRS990/EscrowAccountLiabilityGrp/BOYAmt | 0 | 0 |
| IRS990/EscrowAccountLiabilityGrp/EOYAmt | 0 | 0 |
| IRS990/ExpenseAmt | 0 | 209423654 |
| IRS990/FamilyOrBusinessRlnInd | 0 | 0 |
| IRS990/FederalGrantAuditPerformedInd | 0 | 1 |
| IRS990/FederalGrantAuditRequiredInd | 0 | 1 |
| IRS990/FeesForServicesLegalGrp/ManagementAndGeneralAmt | 0 | 16258 |
| IRS990/FeesForServicesLegalGrp/TotalAmt | 0 | 16258 |
| IRS990/FeesForServicesOtherGrp/ManagementAndGeneralAmt | 0 | 66176 |
| IRS990/FeesForServicesOtherGrp/ProgramServicesAmt | 0 | 6330003 |
| IRS990/FeesForServicesOtherGrp/TotalAmt | 0 | 6396179 |
| IRS990/FeesForSrvcInvstMgmntFeesGrp/ManagementAndGeneralAmt | 0 | 110818 |
| IRS990/FeesForSrvcInvstMgmntFeesGrp/TotalAmt | 0 | 110818 |
| IRS990/ForeignActivitiesInd | 0 | 1 |
| IRS990/ForeignFinancialAccountInd | 0 | 0 |
| IRS990/ForeignOfficeInd | 0 | 0 |
| IRS990/Form8282PropertyDisposedOfInd | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 0 | 5.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 1 | 4.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 2 | 3.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 3 | 4.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 4 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 5 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 6 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 7 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 8 | 3.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 9 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 10 | 3.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 11 | 54.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 12 | 54.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 13 | 54.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 14 | 54.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 15 | 54.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 16 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 17 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 18 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 19 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 20 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 21 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 0 | 38.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 1 | 53.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 2 | 53.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 3 | 54.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 4 | 52.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 5 | 52.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 6 | 52.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 7 | 52.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 8 | 52.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 9 | 52.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 10 | 52.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 11 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 12 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 13 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 14 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 15 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 16 | 50.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 17 | 50.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 18 | 50.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 19 | 50.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 20 | 50.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 21 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/FormerOfcrDirectorTrusteeInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/HighestCompensatedEmployeeInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/HighestCompensatedEmployeeInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/HighestCompensatedEmployeeInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/HighestCompensatedEmployeeInd | 3 | X |
| IRS990/Form990PartVIISectionAGrp/HighestCompensatedEmployeeInd | 4 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 3 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 4 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 5 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 6 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 7 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 8 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 9 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 10 | X |
| IRS990/Form990PartVIISectionAGrp/KeyEmployeeInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/KeyEmployeeInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/KeyEmployeeInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/KeyEmployeeInd | 3 | X |
| IRS990/Form990PartVIISectionAGrp/KeyEmployeeInd | 4 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 3 | X |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 0 | 16822 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 1 | 53594 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 2 | 52460 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 3 | 47244 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 4 | 41537 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 5 | 50100 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 6 | 52454 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 7 | 53937 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 8 | 52460 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 9 | 49225 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 10 | 42309 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 11 | 50238 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 12 | 46087 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 13 | 50671 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 14 | 291778 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 15 | 45360 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 16 | 21519 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 17 | 49225 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 18 | 40903 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 19 | 50952 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 20 | 49225 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 21 | 12843 |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 0 | ALPA SHAH MD |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | EDWARD FERNANDEZ MD |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | KENT RAY DO |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | MATTHEW THOMAS MD |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | TIMOTHY WENGERT MD |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | SUSHMA THAPPETA MD |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | JAYANTH VEDRE MD |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | DAVID JUNKER MD |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | ELVIS PETER MD |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 9 | NICHOLAS BODMER MD |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 10 | NEELAKANTAN NAMBOODIRI MD |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 11 | NARAYANA MURALI MD |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 12 | JERARD JENSEN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 13 | GORDON EDWARDS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 14 | SUSAN TURNEY MD |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 15 | WILLIAM MELMS MD |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 16 | VIVEKANANDA GONUGUNTA MD |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 17 | ADEDAYO ONITILO MD |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 18 | ZAHIR RASHID MD |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 19 | DAVID SIMENSTAD MD |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 20 | SANJAY KUMAR MD |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 21 | STEVEN KULICK |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 0 | 243252 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 1 | 638528 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 2 | 335197 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 3 | 633405 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 4 | 341720 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 5 | 473522 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 6 | 732731 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 7 | 707478 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 8 | 871834 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 9 | 722268 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 10 | 360247 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 11 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 12 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 13 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 14 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 15 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 16 | 1683339 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 17 | 1489945 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 18 | 1190159 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 19 | 1157233 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 20 | 1154016 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 21 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 9 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 10 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 11 | 1082372 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 12 | 986292 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 13 | 1003980 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 14 | 2834416 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 15 | 607112 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 16 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 17 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 18 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 19 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 20 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 21 | 471868 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 0 | CHAIR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | VICE CHAIR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | SECRETARY |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | TREASURER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 6 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 7 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 8 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 9 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 10 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 11 | EXECUTIVE DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 12 | MCHS GENERAL COUNSEL |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 13 | MCHS CFO/COO |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 14 | MCHS CEO |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 15 | CHIEF MEDICAL OFFICER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 16 | PHYSICIAN |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 17 | PHYSICIAN |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 18 | PHYSICIAN |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 19 | PHYSICIAN |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 20 | PHYSICIAN |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 21 | FORMER CHIEF EXP OFFICER |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | 1 |
| IRS990/Form990TFiledInd | 0 | 1 |
| IRS990/FormationYr | 0 | 1916 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | 1 |
| IRS990/FSAuditedBasisGrp/ConsolidatedBasisFinclStmtInd | 0 | X |
| IRS990/FSAuditedInd | 0 | 1 |
| IRS990/FundraisingActivitiesInd | 0 | 0 |
| IRS990/GainOrLossGrp/OtherAmt | 0 | -895473 |
| IRS990/GainOrLossGrp/SecuritiesAmt | 0 | 608388 |
| IRS990/GamingActivitiesInd | 0 | 0 |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 11 |
| IRS990/GovernmentGrantsAmt | 0 | 17962979 |
| IRS990/GrantAmt | 0 | 139000 |
| IRS990/GrantsPayableGrp/BOYAmt | 0 | 0 |
| IRS990/GrantsPayableGrp/EOYAmt | 0 | 0 |
| IRS990/GrantsToDomesticOrgsGrp/ProgramServicesAmt | 0 | 139000 |
| IRS990/GrantsToDomesticOrgsGrp/TotalAmt | 0 | 139000 |
| IRS990/GrantsToIndividualsInd | 0 | 0 |
| IRS990/GrantsToOrganizationsInd | 0 | 1 |
| IRS990/GrantToRelatedPersonInd | 0 | 0 |
| IRS990/GrossAmountSalesAssetsGrp/OtherAmt | 0 | 15865 |
| IRS990/GrossAmountSalesAssetsGrp/SecuritiesAmt | 0 | 1383778 |
| IRS990/GrossReceiptsAmt | 0 | 224810398 |
| IRS990/GrossRentsGrp/RealAmt | 0 | 66257 |
| IRS990/GroupReturnForAffiliatesInd | 0 | 0 |
| IRS990/IncludeFIN48FootnoteInd | 0 | 1 |
| IRS990/IncmFromInvestBondProceedsGrp/ExclusionAmt | 0 | 91956 |
| IRS990/IncmFromInvestBondProceedsGrp/TotalRevenueColumnAmt | 0 | 91956 |
| IRS990/IndependentAuditFinclStmtInd | 0 | 0 |
| IRS990/IndependentVotingMemberCnt | 0 | 0 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 664 |
| IRS990/IndoorTanningServicesInd | 0 | 0 |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InfoInScheduleOPartVInd | 0 | X |
| IRS990/InfoInScheduleOPartXIInd | 0 | X |
| IRS990/InformationTechnologyGrp/ManagementAndGeneralAmt | 0 | 60493 |
| IRS990/InformationTechnologyGrp/ProgramServicesAmt | 0 | 903919 |
| IRS990/InformationTechnologyGrp/TotalAmt | 0 | 964412 |
| IRS990/InsuranceGrp/ProgramServicesAmt | 0 | 546724 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 546724 |
| IRS990/IntangibleAssetsGrp/BOYAmt | 0 | 428191 |
| IRS990/IntangibleAssetsGrp/EOYAmt | 0 | 370691 |
| IRS990/InterestGrp/ProgramServicesAmt | 0 | 3267766 |
| IRS990/InterestGrp/TotalAmt | 0 | 3267766 |
| IRS990/InventoriesForSaleOrUseGrp/BOYAmt | 0 | 26435197 |
| IRS990/InventoriesForSaleOrUseGrp/EOYAmt | 0 | 29921334 |
| IRS990/InvestmentIncomeGrp/ExclusionAmt | 0 | 968013 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 1347385 |
| IRS990/InvestmentIncomeGrp/UnrelatedBusinessRevenueAmt | 0 | 379372 |
| IRS990/InvestmentInJointVentureInd | 0 | 1 |
| IRS990/InvestmentsOtherSecuritiesGrp/BOYAmt | 0 | 160034011 |
| IRS990/InvestmentsOtherSecuritiesGrp/EOYAmt | 0 | 154544639 |
| IRS990/InvestmentsProgramRelatedGrp/BOYAmt | 0 | 4450045 |
| IRS990/InvestmentsProgramRelatedGrp/EOYAmt | 0 | 1678326 |
| IRS990/InvestmentsPubTradedSecGrp/BOYAmt | 0 | 208143905 |
| IRS990/InvestmentsPubTradedSecGrp/EOYAmt | 0 | 234576543 |
| IRS990/IRPDocumentCnt | 0 | 0 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LandBldgEquipAccumDeprecAmt | 0 | 378470671 |
| IRS990/LandBldgEquipBasisNetGrp/BOYAmt | 0 | 371573864 |
| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 349706078 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 728176749 |
| IRS990/LegalDomicileStateCd | 0 | WI |
| IRS990/LessCostOthBasisSalesExpnssGrp/OtherAmt | 0 | 911338 |
| IRS990/LessCostOthBasisSalesExpnssGrp/SecuritiesAmt | 0 | 775390 |
| IRS990/LessRentalExpensesGrp/RealAmt | 0 | 81055 |
| IRS990/LoanOutstandingInd | 0 | 0 |
| IRS990/LoansFromOfficersDirectorsGrp/BOYAmt | 0 | 0 |
| IRS990/LoansFromOfficersDirectorsGrp/EOYAmt | 0 | 0 |
| IRS990/LobbyingActivitiesInd | 0 | 0 |
| IRS990/LocalChaptersInd | 0 | 0 |
| IRS990/MaterialDiversionOrMisuseInd | 0 | 0 |
| IRS990/MembersOrStockholdersInd | 0 | 1 |
| IRS990/MethodOfAccountingAccrualInd | 0 | X |
| IRS990/MinutesOfCommitteesInd | 0 | 1 |
| IRS990/MinutesOfGoverningBodyInd | 0 | 1 |
| IRS990/MissionDesc | 0 | WE ENRICH LIVES TO CREATE HEALTHY COMMUNITIES THROUGH ACCESSIBLE, AFFORDABLE, COMPASSIONATE HEALTH CARE. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | 0 |
| IRS990/MoreThan5000KToOrgInd | 0 | 0 |
| IRS990/MortgNotesPyblScrdInvstPropGrp/BOYAmt | 0 | 1653268 |
| IRS990/MortgNotesPyblScrdInvstPropGrp/EOYAmt | 0 | 1768371 |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 111267281 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 134325102 |
| IRS990/NetGainOrLossInvestmentsGrp/ExclusionAmt | 0 | -287085 |
| IRS990/NetGainOrLossInvestmentsGrp/TotalRevenueColumnAmt | 0 | -287085 |
| IRS990/NetRentalIncomeOrLossGrp/ExclusionAmt | 0 | -14798 |
| IRS990/NetRentalIncomeOrLossGrp/TotalRevenueColumnAmt | 0 | -14798 |
| IRS990/NetUnrelatedBusTxblIncmAmt | 0 | 0 |
| IRS990/NetUnrlzdGainsLossesInvstAmt | 0 | 12326216 |
| IRS990/NoDonorRestrictionNetAssetsGrp/BOYAmt | 0 | 109831811 |
| IRS990/NoDonorRestrictionNetAssetsGrp/EOYAmt | 0 | 132834334 |
| IRS990/NondeductibleContributionsInd | 0 | 0 |
| IRS990/OccupancyGrp/ProgramServicesAmt | 0 | 1048347 |
| IRS990/OccupancyGrp/TotalAmt | 0 | 1048347 |
| IRS990/OfficeExpensesGrp/ManagementAndGeneralAmt | 0 | 116477 |
| IRS990/OfficeExpensesGrp/ProgramServicesAmt | 0 | 3543724 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 3660201 |
| IRS990/OfficerMailingAddressInd | 0 | 0 |
| IRS990/OperateHospitalInd | 0 | 0 |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsFASB117Ind | 0 | X |
| IRS990/OtherAssetsTotalGrp/BOYAmt | 0 | 3811751 |
| IRS990/OtherAssetsTotalGrp/EOYAmt | 0 | 4026952 |
| IRS990/OtherChangesInNetAssetsAmt | 0 | 15330693 |
| IRS990/OtherEmployeeBenefitsGrp/ManagementAndGeneralAmt | 0 | 431459 |
| IRS990/OtherEmployeeBenefitsGrp/ProgramServicesAmt | 0 | 6913631 |
| IRS990/OtherEmployeeBenefitsGrp/TotalAmt | 0 | 7345090 |
| IRS990/OtherExpensesGrp/Desc | 0 | MEDICAL SUPPLIES |
| IRS990/OtherExpensesGrp/Desc | 1 | I/C PURCHASED SERVICES |
| IRS990/OtherExpensesGrp/Desc | 2 | EQUIPMENT REPAIRS |
| IRS990/OtherExpensesGrp/Desc | 3 | ALL OTHER EXPENSES |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 0 | 40363 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 1 | 12711189 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 2 | 336 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 3 | 46792 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 0 | 58669535 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 1 | 0 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 2 | 2208722 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 3 | 482667 |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 58709898 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 12711189 |
| IRS990/OtherExpensesGrp/TotalAmt | 2 | 2209058 |
| IRS990/OtherExpensesGrp/TotalAmt | 3 | 529459 |
| IRS990/OtherLiabilitiesGrp/BOYAmt | 0 | 84528993 |
| IRS990/OtherLiabilitiesGrp/EOYAmt | 0 | 92648331 |
| IRS990/OtherSalariesAndWagesGrp/ManagementAndGeneralAmt | 0 | 2327387 |
| IRS990/OtherSalariesAndWagesGrp/ProgramServicesAmt | 0 | 112258207 |
| IRS990/OtherSalariesAndWagesGrp/TotalAmt | 0 | 114585594 |
| IRS990/OthNotesLoansReceivableNetGrp/BOYAmt | 0 | 23577651 |
| IRS990/OthNotesLoansReceivableNetGrp/EOYAmt | 0 | 23652388 |