| IRS990/AccountantCompileOrReviewInd | 0 | 0 |
| IRS990/AccountsPayableAccrExpnssGrp/BOYAmt | 0 | 623224 |
| IRS990/AccountsPayableAccrExpnssGrp/EOYAmt | 0 | 703293 |
| IRS990/AccountsReceivableGrp/BOYAmt | 0 | 14678349 |
| IRS990/AccountsReceivableGrp/EOYAmt | 0 | 16579789 |
| IRS990/ActivitiesConductedPrtshpInd | 0 | 0 |
| IRS990/ActivityOrMissionDesc | 0 | TO PROVIDED HEALTH AND OTHER BENEFITS TO ELIGIBLE PARTICIPANTS COVERED UNDER THE PLAN. |
| IRS990/AnnualDisclosureCoveredPrsnInd | 0 | 1 |
| IRS990/AuditCommitteeInd | 0 | 1 |
| IRS990/BackupWthldComplianceInd | 0 | 1 |
| IRS990/BenefitsToMembersGrp/TotalAmt | 0 | 157557130 |
| IRS990/BooksInCareOfDetail/BusinessName/BusinessNameLine1Txt | 0 | BENESYS |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 2625499190 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | N27 W23233 ROUNDY DRIVE |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | PEWAUKEE |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | WI |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 530720130 |
| IRS990/BusinessRlnWith35CtrlEntInd | 0 | 0 |
| IRS990/BusinessRlnWithFamMemInd | 0 | 0 |
| IRS990/BusinessRlnWithOrgMemInd | 0 | 0 |
| IRS990/CapStkTrPrinCurrentFundsGrp/BOYAmt | 0 | 0 |
| IRS990/CapStkTrPrinCurrentFundsGrp/EOYAmt | 0 | 0 |
| IRS990/CashNonInterestBearingGrp/BOYAmt | 0 | 4557776 |
| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 776990 |
| IRS990/ChangeToOrgDocumentsInd | 0 | 0 |
| IRS990/CntrctRcvdGreaterThan100KCnt | 0 | 11 |
| IRS990/CollectionsOfArtInd | 0 | 0 |
| IRS990/CompensationFromOtherSrcsInd | 0 | 0 |
| IRS990/CompensationProcessCEOInd | 0 | 0 |
| IRS990/CompensationProcessOtherInd | 0 | 0 |
| IRS990/ConferencesMeetingsGrp/TotalAmt | 0 | 5410 |
| IRS990/ConflictOfInterestPolicyInd | 0 | 1 |
| IRS990/ConservationEasementsInd | 0 | 0 |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | 0 |
| IRS990/ContractorCompensationGrp/CompensationAmt | 0 | 3081430 |
| IRS990/ContractorCompensationGrp/CompensationAmt | 1 | 1775261 |
| IRS990/ContractorCompensationGrp/CompensationAmt | 2 | 687466 |
| IRS990/ContractorCompensationGrp/CompensationAmt | 3 | 480236 |
| IRS990/ContractorCompensationGrp/CompensationAmt | 4 | 335971 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/AddressLine1Txt | 0 | 4361 IRWIN SIMPSON RD |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/AddressLine1Txt | 1 | N27 W23233 ROUNDY DR |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/AddressLine1Txt | 2 | PO BOX 102 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/AddressLine1Txt | 3 | 3000 SOUTH LENOLA RD |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/AddressLine1Txt | 4 | 222 S RIVERSIDE PLAZA |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/CityNm | 0 | MASON |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/CityNm | 1 | PEWAUKEE |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/CityNm | 2 | NASHOTAH |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/CityNm | 3 | MAPLE SHADE |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/CityNm | 4 | CHICAGO |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/StateAbbreviationCd | 0 | OH |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/StateAbbreviationCd | 1 | WI |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/StateAbbreviationCd | 2 | WI |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/StateAbbreviationCd | 3 | NJ |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/StateAbbreviationCd | 4 | IL |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/ZIPCd | 0 | 45040 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/ZIPCd | 1 | 53072 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/ZIPCd | 2 | 53058 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/ZIPCd | 3 | 08052 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/ZIPCd | 4 | 60606 |
| IRS990/ContractorCompensationGrp/ContractorName/BusinessName/BusinessNameLine1Txt | 0 | ANTHEMBCBS |
| IRS990/ContractorCompensationGrp/ContractorName/BusinessName/BusinessNameLine1Txt | 1 | BENESYS |
| IRS990/ContractorCompensationGrp/ContractorName/BusinessName/BusinessNameLine1Txt | 2 | CASE MANAGEMENT SPECIALISTS INC |
| IRS990/ContractorCompensationGrp/ContractorName/BusinessName/BusinessNameLine1Txt | 3 | OPTUMRX |
| IRS990/ContractorCompensationGrp/ContractorName/BusinessName/BusinessNameLine1Txt | 4 | RREEF |
| IRS990/ContractorCompensationGrp/ServicesDesc | 0 | PPO ACCESS AND ADMIN |
| IRS990/ContractorCompensationGrp/ServicesDesc | 1 | THIRD PARTY ADMIN |
| IRS990/ContractorCompensationGrp/ServicesDesc | 2 | CONSULTING FEES |
| IRS990/ContractorCompensationGrp/ServicesDesc | 3 | RX ADMINISTRATION |
| IRS990/ContractorCompensationGrp/ServicesDesc | 4 | INVESTMENT FEES |
| IRS990/CreditCounselingInd | 0 | 0 |
| IRS990/CYBenefitsPaidToMembersAmt | 0 | 157557130 |
| IRS990/CYContributionsGrantsAmt | 0 | 0 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 0 |
| IRS990/CYInvestmentIncomeAmt | 0 | 5380480 |
| IRS990/CYOtherExpensesAmt | 0 | 8830126 |
| IRS990/CYOtherRevenueAmt | 0 | 0 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 156523380 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | -4483396 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 0 |
| IRS990/CYTotalExpensesAmt | 0 | 166387256 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 0 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 161903860 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | 0 |
| IRS990/DeductibleArtContributionInd | 0 | 0 |
| IRS990/DeductibleNonCashContriInd | 0 | 0 |
| IRS990/DeferredRevenueGrp/BOYAmt | 0 | 1460013 |
| IRS990/DeferredRevenueGrp/EOYAmt | 0 | 1520591 |
| IRS990/DelegationOfMgmtDutiesInd | 0 | 1 |
| IRS990/DepreciationDepletionGrp/TotalAmt | 0 | 32523 |
| IRS990/Desc | 0 | THE PLAN PROVIDES MEDICAL, DENTAL, VISION, LIFE AND ACCIDENTAL DEATH & DISMEMBERMENT BENEFITS TO ELIGIBLE MEMBERS AND THEIR DEPENDENTS. |
| IRS990/DescribedInSection501c3Ind | 0 | 0 |
| IRS990/DisregardedEntityInd | 0 | 0 |
| IRS990/DocumentRetentionPolicyInd | 0 | 1 |
| IRS990/DonorAdvisedFundInd | 0 | 0 |
| IRS990/DonorRstrOrQuasiEndowmentsInd | 0 | 0 |
| IRS990/ElectionOfBoardMembersInd | 0 | 0 |
| IRS990/EmployeeCnt | 0 | 168 |
| IRS990/EmploymentTaxReturnsFiledInd | 0 | 1 |
| IRS990/FamilyOrBusinessRlnInd | 0 | 0 |
| IRS990/FederalGrantAuditRequiredInd | 0 | 0 |
| IRS990/FeesForServicesAccountingGrp/TotalAmt | 0 | 35420 |
| IRS990/FeesForServicesLegalGrp/TotalAmt | 0 | 238707 |
| IRS990/FeesForServicesManagementGrp/TotalAmt | 0 | 1844742 |
| IRS990/FeesForServicesOtherGrp/TotalAmt | 0 | 4616297 |
| IRS990/FeesForSrvcInvstMgmntFeesGrp/TotalAmt | 0 | 1088432 |
| IRS990/ForeignActivitiesInd | 0 | 0 |
| IRS990/ForeignFinancialAccountInd | 0 | 0 |
| IRS990/ForeignOfficeInd | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 0 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 1 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 2 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 3 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 0 | 3.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 1 | 3.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 2 | 3.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 3 | 3.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 4 | 3.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 5 | 3.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 6 | 3.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 7 | 3.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 8 | 3.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 9 | 3.00 |
| 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/OtherCompensationAmt | 0 | 80822 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 2 | 80822 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 5 | 80822 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 8 | 80822 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 9 | 0 |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 0 | TERRY MCGOWAN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | TOM WOLF |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | DAN SPERBERG |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | TIM PETERSON |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | MATT MARCELLIS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | STEVE BUFFALO |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | MARY JANE DEBATTISTA |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | MARY WILCOX |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | SHANE GRIESBACH |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 9 | DERECK ALLEN |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 9 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 0 | 199822 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 2 | 167971 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 5 | 168463 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 8 | 167674 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 9 | 0 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 0 | CHAIRMAN |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | SECRETARY |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 6 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 7 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 8 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 9 | TRUSTEE |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | 0 |
| IRS990/FormationYr | 0 | 1970 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | 0 |
| IRS990/FSAuditedBasisGrp/SeparateBasisFinclStmtInd | 0 | X |
| IRS990/FSAuditedInd | 0 | 1 |
| IRS990/FundraisingActivitiesInd | 0 | 0 |
| IRS990/GainOrLossGrp/SecuritiesAmt | 0 | -2169726 |
| IRS990/GamingActivitiesInd | 0 | 0 |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 10 |
| IRS990/GrantsToIndividualsInd | 0 | 0 |
| IRS990/GrantsToOrganizationsInd | 0 | 0 |
| IRS990/GrantToRelatedPersonInd | 0 | 0 |
| IRS990/GrossAmountSalesAssetsGrp/SecuritiesAmt | 0 | 177307259 |
| IRS990/GrossReceiptsAmt | 0 | 341380845 |
| IRS990/GroupReturnForAffiliatesInd | 0 | 0 |
| IRS990/IncludeFIN48FootnoteInd | 0 | 1 |
| IRS990/IndependentAuditFinclStmtInd | 0 | 1 |
| IRS990/IndependentVotingMemberCnt | 0 | 6 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 0 |
| IRS990/IndoorTanningServicesInd | 0 | 0 |
| IRS990/InfoInScheduleOPartIIIInd | 0 | X |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InfoInScheduleOPartXIIInd | 0 | X |
| IRS990/InformationTechnologyGrp/TotalAmt | 0 | 309222 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 64812 |
| IRS990/InvestmentIncomeGrp/ExclusionAmt | 0 | 7550206 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 7550206 |
| IRS990/InvestmentInJointVentureInd | 0 | 0 |
| IRS990/InvestmentsOtherSecuritiesGrp/BOYAmt | 0 | 130313631 |
| IRS990/InvestmentsOtherSecuritiesGrp/EOYAmt | 0 | 112802724 |
| IRS990/InvestmentsPubTradedSecGrp/BOYAmt | 0 | 288225028 |
| IRS990/InvestmentsPubTradedSecGrp/EOYAmt | 0 | 310279727 |
| IRS990/IRPDocumentCnt | 0 | 2287 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
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| IRS990/LandBldgEquipBasisNetGrp/BOYAmt | 0 | 78274 |
| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 73971 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 1195641 |
| IRS990/LegalDomicileStateCd | 0 | WI |
| IRS990/LessCostOthBasisSalesExpnssGrp/SecuritiesAmt | 0 | 179476985 |
| IRS990/LoanOutstandingInd | 0 | 0 |
| IRS990/LocalChaptersInd | 0 | 0 |
| IRS990/MaterialDiversionOrMisuseInd | 0 | 0 |
| IRS990/MembersOrStockholdersInd | 0 | 0 |
| IRS990/MethodOfAccountingAccrualInd | 0 | X |
| IRS990/MinutesOfCommitteesInd | 0 | 1 |
| IRS990/MinutesOfGoverningBodyInd | 0 | 1 |
| IRS990/MissionDesc | 0 | TO PROVIDE HEALTH AND OTHER BENEFITS TO ELIGIBLE PARTICIPANTS COVERED UNDER THE PLAN |
| IRS990/MoreThan5000KToIndividualsInd | 0 | 0 |
| IRS990/MoreThan5000KToOrgInd | 0 | 0 |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 366688429 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 360566475 |
| IRS990/NetGainOrLossInvestmentsGrp/ExclusionAmt | 0 | -2169726 |
| IRS990/NetGainOrLossInvestmentsGrp/TotalRevenueColumnAmt | 0 | -2169726 |
| IRS990/NetUnrelatedBusTxblIncmAmt | 0 | 0 |
| IRS990/NetUnrlzdGainsLossesInvstAmt | 0 | -1638558 |
| IRS990/NondeductibleContributionsInd | 0 | 0 |
| IRS990/OccupancyGrp/TotalAmt | 0 | 180260 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 363780 |
| IRS990/OfficerMailingAddressInd | 0 | 0 |
| IRS990/OperateHospitalInd | 0 | 0 |
| IRS990/Organization501cInd | 0 | X |
| IRS990/OrgDoesNotFollowFASB117Ind | 0 | X |
| IRS990/OtherAssetsTotalGrp/BOYAmt | 0 | 7558546 |
| IRS990/OtherAssetsTotalGrp/EOYAmt | 0 | 9151670 |
| IRS990/OtherChangesInNetAssetsAmt | 0 | 0 |
| IRS990/OtherExpensesGrp/Desc | 0 | PCORI FEES |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 50521 |
| IRS990/OtherLiabilitiesGrp/BOYAmt | 0 | 76697387 |
| IRS990/OtherLiabilitiesGrp/EOYAmt | 0 | 86946112 |
| IRS990/PartialLiquidationInd | 0 | 0 |
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| IRS990/PdInCapSrplsLandBldgEqpFundGrp/EOYAmt | 0 | 0 |
| IRS990/PoliticalCampaignActyInd | 0 | 0 |
| IRS990/PrepaidExpensesDefrdChargesGrp/BOYAmt | 0 | 57449 |
| IRS990/PrepaidExpensesDefrdChargesGrp/EOYAmt | 0 | 71600 |
| IRS990/PrincipalOfficerNm | 0 | TERRANCE MCGOWAN |
| IRS990/ProfessionalFundraisingInd | 0 | 0 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 0 | 900099 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 1 | 900099 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 2 | 900099 |
| IRS990/ProgramServiceRevenueGrp/Desc | 0 | EMPLOYER CONTRIBUTIONS |
| IRS990/ProgramServiceRevenueGrp/Desc | 1 | SELF-PAY CONTRIBUTIONS |
| IRS990/ProgramServiceRevenueGrp/Desc | 2 | SUBROGATION RECOVERIES |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 0 | 137180597 |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 1 | 18827711 |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 2 | 515072 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 0 | 137180597 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 1 | 18827711 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 2 | 515072 |
| IRS990/ProgSrvcAccomActyOtherGrp/Desc | 0 | THE PLAN PROVIDES MEDICAL, DENTAL, VISION, LIFE, AND ACCIDENTAL DEATH & DISMEMBERMENT BENEFITS TO ELIGIBLE MEMBERS AND THEIR DEPENDENTS. |
| IRS990/ProhibitedTaxShelterTransInd | 0 | 0 |
| IRS990/PYBenefitsPaidToMembersAmt | 0 | 137130524 |
| IRS990/PYContributionsGrantsAmt | 0 | 0 |
| IRS990/PYGrantsAndSimilarPaidAmt | 0 | 0 |
| IRS990/PYInvestmentIncomeAmt | 0 | 54576864 |
| IRS990/PYOtherExpensesAmt | 0 | 8505585 |
| IRS990/PYOtherRevenueAmt | 0 | 0 |
| IRS990/PYProgramServiceRevenueAmt | 0 | 141687747 |
| IRS990/PYRevenuesLessExpensesAmt | 0 | 50628502 |
| IRS990/PYSalariesCompEmpBnftPaidAmt | 0 | 0 |
| IRS990/PYTotalExpensesAmt | 0 | 145636109 |
| IRS990/PYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/PYTotalRevenueAmt | 0 | 196264611 |
| IRS990/ReconcilationRevenueExpnssAmt | 0 | -4483396 |
| IRS990/RegularMonitoringEnfrcInd | 0 | 1 |
| IRS990/RelatedEntityInd | 0 | 1 |
| IRS990/RelatedOrganizationCtrlEntInd | 0 | 0 |
| IRS990/ReportInvestmentsOtherSecInd | 0 | 1 |
| IRS990/ReportLandBuildingEquipmentInd | 0 | 1 |
| IRS990/ReportOtherAssetsInd | 0 | 0 |
| IRS990/ReportOtherLiabilitiesInd | 0 | 1 |
| IRS990/ReportProgramRelatedInvstInd | 0 | 0 |
| IRS990/RtnEarnEndowmentIncmOthFndsGrp/BOYAmt | 0 | 366688429 |
| IRS990/RtnEarnEndowmentIncmOthFndsGrp/EOYAmt | 0 | 360566475 |
| IRS990/ScheduleBRequiredInd | 0 | 0 |
| IRS990ScheduleD/EquipmentGrp/BookValueAmt | 0 | 48191 |
| IRS990ScheduleD/EquipmentGrp/DepreciationAmt | 0 | 868199 |
| IRS990ScheduleD/EquipmentGrp/OtherCostOrOtherBasisAmt | 0 | 916390 |
| IRS990ScheduleD/ExpensesNotReportedAmt | 0 | 0 |
| IRS990ScheduleD/ExpensesNotRptFinclStmtAmt | 0 | 11236385 |
| IRS990ScheduleD/ExpensesSubtotalAmt | 0 | 155150871 |
| IRS990ScheduleD/FootnoteTextInd | 0 | X |
| IRS990ScheduleD/InvestmentExpensesNotIncld2Amt | 0 | 1088432 |
| IRS990ScheduleD/InvestmentExpensesNotIncldAmt | 0 | 1088432 |
| IRS990ScheduleD/NetUnrealizedGainsInvstAmt | 0 | -1638558 |
| IRS990ScheduleD/OtherExpensesNotIncludedAmt | 0 | 10147953 |
| IRS990ScheduleD/OtherLandBuildingsGrp/BookValueAmt | 0 | 25780 |
| IRS990ScheduleD/OtherLandBuildingsGrp/DepreciationAmt | 0 | 253471 |
| IRS990ScheduleD/OtherLandBuildingsGrp/OtherCostOrOtherBasisAmt | 0 | 279251 |
| IRS990ScheduleD/OtherLiabilitiesOrgGrp/Amt | 0 | 17034900 |
| IRS990ScheduleD/OtherLiabilitiesOrgGrp/Amt | 1 | 69810440 |
| IRS990ScheduleD/OtherLiabilitiesOrgGrp/Amt | 2 | 100772 |
| IRS990ScheduleD/OtherLiabilitiesOrgGrp/Desc | 0 | CLAIMS INCURRED BUT NOT REPORTED |
| IRS990ScheduleD/OtherLiabilitiesOrgGrp/Desc | 1 | ACCUM PART HEALTH SAV ACCOUNTS |
| IRS990ScheduleD/OtherLiabilitiesOrgGrp/Desc | 2 | DUE TO BROKERS |
| IRS990ScheduleD/OtherSecuritiesGrp/BookValueAmt | 0 | 33622646 |
| IRS990ScheduleD/OtherSecuritiesGrp/BookValueAmt | 1 | 42477285 |
| IRS990ScheduleD/OtherSecuritiesGrp/BookValueAmt | 2 | 36702793 |
| IRS990ScheduleD/OtherSecuritiesGrp/Desc | 0 | REAL ESTATE INVESTMENT TRUST |
| IRS990ScheduleD/OtherSecuritiesGrp/Desc | 1 | LIMITED PARTNERSHIPS |
| IRS990ScheduleD/OtherSecuritiesGrp/Desc | 2 | COMMON COLLECTIVE TRUST |
| IRS990ScheduleD/OtherSecuritiesGrp/MethodValuationCd | 0 | F |
| IRS990ScheduleD/OtherSecuritiesGrp/MethodValuationCd | 1 | F |
| IRS990ScheduleD/OtherSecuritiesGrp/MethodValuationCd | 2 | F |
| IRS990ScheduleD/RevenueNotReportedAmt | 0 | -1638558 |
| IRS990ScheduleD/RevenueNotReportedFinclStmtAmt | 0 | 1088432 |
| IRS990ScheduleD/RevenueSubtotalAmt | 0 | 160815428 |
| IRS990ScheduleD/SupplementalInformationDetail/ExplanationTxt | 0 | THE TRUST ESTABLISHED UNDER THE PLAN TO HOLD THE PLAN'S ASSETS IS QUALIFIED PURSUANT TO SECTION 501(C) 9 OF THE INTERNAL REVENUE CODE AS A TAX-EXEMPT ORGANIZATION. THE PLAN HAS OBTAINED A FAVORABLE TAX DETERMINATION LETTER FROM THE INTERNAL REVENUE SERVICE, AND THE PLAN SPONSOR BELIEVES THAT THE PLAN, AS AMENDED, CONTINUES TO QUALIFY AND TO OPERATE IN ACCORDANCE WITH APPLICABLE PROVISIONS OF THE INTERNAL REVENUE CODE. ACCOUNTING PRINCIPLES GENERALLY ACCEPTED IN THE UNITED STATES OF AMERICA REQUIRE PLAN MANAGEMENT TO EVALUATE TAX POSITIONS TAKEN BY THE PLAN AND RECOGNIZE A TAX LIABILITY (OR ASSET) IF THE ORGANIZATION HAS TAKEN AN UNCERTAIN POSITION THAT MORE LIKELY THAN NOT WOULD NOT BE SUSTAINED UPON EXAMINATION BY THE TAXING AUTHORITIES. AS OF MAY 31, 2023, THERE WERE NO UNCERTAIN POSITIONS TAKEN OR EXPECTED TO BE TAKEN THAT WOULD REQUIRE RECOGNITION OF A LIABILITY (OR ASSET) OR DISCLOSURE IN THE FINANCIAL STATEMENTS. THE PLAN IS SUBJECT TO ROUTINE AUDITS BY TAXING JURISDICTIONS; HOWEVER, THERE ARE CURRENTLY NO AUDITS FOR ANY TAX PERIODS IN PROGRESS. AT MAY 31, 2023, THE PLAN IS NO LONGER SUBJECT TO INCOME TAX EXAMINATIONS FOR YEARS PRIOR TO THE FISCAL YEAR ENDED MAY 31, 2020. . |
| IRS990ScheduleD/SupplementalInformationDetail/ExplanationTxt | 1 | INC IN PART. ACCUM HEALTH REIMB ACCOUNTS 4,813,253. INC IN EST CLAIMS INCURRED BUT NOT RPTD 4,267,700. INC IN EST CLAIMS PAYABLE 1,067,000. |
| IRS990ScheduleD/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | PART X, LINE 2: |
| IRS990ScheduleD/SupplementalInformationDetail/FormAndLineReferenceDesc | 1 | PART XII, LINE 4B - OTHER ADJUSTMENTS: |
| IRS990ScheduleD/TotalBookValueLandBuildingsAmt | 0 | 73971 |
| IRS990ScheduleD/TotalBookValueSecuritiesAmt | 0 | 112802724 |
| IRS990ScheduleD/TotalExpensesPerForm990Amt | 0 | 166387256 |
| IRS990ScheduleD/TotalLiabilityAmt | 0 | 86946112 |
| IRS990ScheduleD/TotalRevenuePerForm990Amt | 0 | 161903860 |
| IRS990ScheduleD/TotalRevEtcAuditedFinclStmtAmt | 0 | 159176870 |
| IRS990ScheduleD/TotExpnsEtcAuditedFinclStmtAmt | 0 | 155150871 |
| IRS990ScheduleJ/EquityBasedCompArrngmInd | 0 | 0 |
| IRS990/ScheduleJRequiredInd | 0 | 1 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/BaseCompensationFilingOrgAmt | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/BaseCompensationFilingOrgAmt | 1 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/BaseCompensationFilingOrgAmt | 2 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/BaseCompensationFilingOrgAmt | 3 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/BonusFilingOrganizationAmount | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/BonusFilingOrganizationAmount | 1 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/BonusFilingOrganizationAmount | 2 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/BonusFilingOrganizationAmount | 3 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/BonusRelatedOrganizationsAmt | 0 | 1015 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/BonusRelatedOrganizationsAmt | 1 | 1522 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/BonusRelatedOrganizationsAmt | 2 | 1015 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/BonusRelatedOrganizationsAmt | 3 | 1015 |
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| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/CompensationBasedOnRltdOrgsAmt | 1 | 166176 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/CompensationBasedOnRltdOrgsAmt | 2 | 166176 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/CompensationBasedOnRltdOrgsAmt | 3 | 166176 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/CompReportPrior990FilingOrgAmt | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/CompReportPrior990FilingOrgAmt | 1 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/CompReportPrior990FilingOrgAmt | 2 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/CompReportPrior990FilingOrgAmt | 3 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/CompReportPrior990RltdOrgsAmt | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/CompReportPrior990RltdOrgsAmt | 1 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/CompReportPrior990RltdOrgsAmt | 2 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/CompReportPrior990RltdOrgsAmt | 3 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/DeferredCompensationFlngOrgAmt | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/DeferredCompensationFlngOrgAmt | 1 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/DeferredCompensationFlngOrgAmt | 2 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/DeferredCompensationFlngOrgAmt | 3 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/DeferredCompRltdOrgsAmt | 0 | 54668 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/DeferredCompRltdOrgsAmt | 1 | 54668 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/DeferredCompRltdOrgsAmt | 2 | 54668 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/DeferredCompRltdOrgsAmt | 3 | 54668 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/NontaxableBenefitsFilingOrgAmt | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/NontaxableBenefitsFilingOrgAmt | 1 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/NontaxableBenefitsFilingOrgAmt | 2 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/NontaxableBenefitsFilingOrgAmt | 3 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/NontaxableBenefitsRltdOrgsAmt | 0 | 26154 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/NontaxableBenefitsRltdOrgsAmt | 1 | 26154 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/NontaxableBenefitsRltdOrgsAmt | 2 | 26154 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/NontaxableBenefitsRltdOrgsAmt | 3 | 26154 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/OtherCompensationFilingOrgAmt | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/OtherCompensationFilingOrgAmt | 1 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/OtherCompensationFilingOrgAmt | 2 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/OtherCompensationFilingOrgAmt | 3 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/OtherCompensationRltdOrgsAmt | 0 | 1322 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/OtherCompensationRltdOrgsAmt | 1 | 765 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/OtherCompensationRltdOrgsAmt | 2 | 780 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/OtherCompensationRltdOrgsAmt | 3 | 483 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/PersonNm | 0 | TERRY MCGOWAN |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/PersonNm | 1 | STEVE BUFFALO |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/PersonNm | 2 | DAN SPERBERG |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/PersonNm | 3 | SHANE GRIESBACH |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/TitleTxt | 0 | CHAIRMAN |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/TitleTxt | 1 | TRUSTEE |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/TitleTxt | 2 | TRUSTEE |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/TitleTxt | 3 | TRUSTEE |