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| IRS990/AccountsPayableAccrExpnssGrp/EOYAmt | 0 | 3034556 |
| IRS990/AccountsReceivableGrp/BOYAmt | 0 | 1322357 |
| IRS990/AccountsReceivableGrp/EOYAmt | 0 | 777619 |
| IRS990/ActivitiesConductedPrtshpInd | 0 | 0 |
| IRS990/ActivityOrMissionDesc | 0 | The Reta Trust was formed under a religious trust agreement entered into by two Roman Catholic Archdioceses, several Dioceses and several religious orders of the Roman Catholic Church as a means wherein to provide cost effective medical benefits to clergy, women religious, and their lay employees and their dependents. |
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| IRS990/AuditCommitteeInd | 0 | 1 |
| IRS990/BenefitsToMembersGrp/TotalAmt | 0 | 162257162 |
| IRS990/BooksInCareOfDetail/BusinessName/BusinessNameLine1Txt | 0 | GALLAGHER BENEFIT SERVICES OF CA |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 4155368428 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 1255 Battery Street Suite 450 |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | San Francisco |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | CA |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 94111 |
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| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 9088150 |
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| IRS990/ContractorCompensationGrp/CompensationAmt | 1 | 1910591 |
| IRS990/ContractorCompensationGrp/CompensationAmt | 2 | 1064335 |
| IRS990/ContractorCompensationGrp/CompensationAmt | 3 | 357918 |
| IRS990/ContractorCompensationGrp/CompensationAmt | 4 | 287424 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/AddressLine1Txt | 0 | 1255 Battery Street Suite 450 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/AddressLine1Txt | 1 | 132 Ivy Lane |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/AddressLine1Txt | 2 | 12186 Collections Center Drive |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/AddressLine1Txt | 3 | 5700 Stoneridge Mall Rd Suite 260 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/AddressLine1Txt | 4 | 1222 State Street Suite 200 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/CityNm | 0 | San Francisco |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/CityNm | 1 | KING OF PRUSSIA |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/CityNm | 2 | Chicago |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/CityNm | 3 | PLEASANTON |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/CityNm | 4 | Santa Barbara |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/StateAbbreviationCd | 0 | CA |
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| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/StateAbbreviationCd | 3 | CA |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/StateAbbreviationCd | 4 | CA |
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| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/ZIPCd | 1 | 19406 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/ZIPCd | 2 | 60693 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/ZIPCd | 3 | 94588 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/ZIPCd | 4 | 93101 |
| IRS990/ContractorCompensationGrp/ContractorName/BusinessName/BusinessNameLine1Txt | 0 | Gallagher Benefit Services |
| IRS990/ContractorCompensationGrp/ContractorName/BusinessName/BusinessNameLine1Txt | 1 | Benefit Allocation Systems |
| IRS990/ContractorCompensationGrp/ContractorName/BusinessName/BusinessNameLine1Txt | 2 | WebMD |
| IRS990/ContractorCompensationGrp/ContractorName/BusinessName/BusinessNameLine1Txt | 3 | SAFEWAY HEALTH INC |
| IRS990/ContractorCompensationGrp/ContractorName/BusinessName/BusinessNameLine1Txt | 4 | BioIQ Inc |
| IRS990/ContractorCompensationGrp/ServicesDesc | 0 | CONSULTING SERVICES |
| IRS990/ContractorCompensationGrp/ServicesDesc | 1 | CONSULTING SERVICES |
| IRS990/ContractorCompensationGrp/ServicesDesc | 2 | CONSULTING SERVICES |
| IRS990/ContractorCompensationGrp/ServicesDesc | 3 | CONSULTING SERVICES |
| IRS990/ContractorCompensationGrp/ServicesDesc | 4 | CONSULTING SERVICES |
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| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 183059493 |
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| IRS990/DeferredRevenueGrp/EOYAmt | 0 | 4006500 |
| IRS990/DelegationOfMgmtDutiesInd | 0 | 1 |
| IRS990/Desc | 0 | The Reta Trust provides medical benefits to clergy, women religious, and lay employees and their dependents of Roman Catholic organizations. |
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| IRS990/DocumentRetentionPolicyInd | 0 | 1 |
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| IRS990/ForeignFinancialAccountInd | 0 | 0 |
| IRS990/ForeignOfficeInd | 0 | 0 |
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| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 4 | 1.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 5 | 0.30 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 6 | 0.30 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 7 | 1.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 8 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 9 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 10 | 1.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 11 | 40.00 |
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| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 1 | X |
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| 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 |
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| IRS990/Form990PartVIISectionAGrp/OfficerInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 3 | X |
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| IRS990/Form990PartVIISectionAGrp/PersonNm | 0 | Tom Arnold |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | Tom Schadle |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | Robert Serventi |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | Laura Clark |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | Rev Gerald Coleman |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | Paul Bongiovanni |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | David Twomey |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | Dcn Aruna Silva |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | Joanne Willhite |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 9 | Rev Steve Sallot |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 10 | Mike Brown |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 11 | JOHN STEIN |
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| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 6 | 0 |
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| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 10 | 0 |
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| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | board Member |
| 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/Form990ProvidedToGvrnBodyInd | 0 | 1 |
| IRS990/FormationYr | 0 | 1976 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | 0 |
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| IRS990/FSAuditedInd | 0 | 1 |
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| IRS990/GamingActivitiesInd | 0 | 0 |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 10 |
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| IRS990/GrantsToOrganizationsInd | 0 | 0 |
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| IRS990/GrossReceiptsAmt | 0 | 236950312 |
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| IRS990/LoanOutstandingInd | 0 | 0 |
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| IRS990/MembersOrStockholdersInd | 0 | 1 |
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| IRS990/MinutesOfCommitteesInd | 0 | 1 |
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| IRS990/MissionDesc | 0 | THE RETA TRUST WAS FORMED UNDER A RELIGIOUS TRUST AGREEMENT ENTERED INTO BY TWO ROMAN CATHOLIC ARCHDIOCESES, SEVERAL DIOCESES AND SEVERAL RELIGIOUS ORDERS OF THE ROMAN CATHOLIC CHURCH AS A MEANS WHEREIN TO PROVIDE COST EFFECTIVE MEDICAL BENEFITS TO CLERGY, WOMEN RELIGIOUS, AND THEIR LAY EMPLOYEES AND THEIR DEPENDENTS. |
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| IRS990/OtherExpensesGrp/Desc | 0 | Claims Administration |
| IRS990/OtherExpensesGrp/Desc | 1 | REINSURANCE PREMIUMS |
| IRS990/OtherExpensesGrp/Desc | 2 | WELLNESS PROGRAM |
| IRS990/OtherExpensesGrp/Desc | 3 | THIRD PARTY ADMINISTRAT |
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| IRS990/OtherRevenueMiscGrp/Desc | 0 | PRESCRIPT DRUG REBATE |
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| IRS990/PrincipalOfficerNm | 0 | Rob Geyer |
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| IRS990/ProgramServiceRevenueGrp/Desc | 0 | TRUSTOR CONTRIBUTIONS |
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| IRS990/ReportOtherLiabilitiesInd | 0 | 1 |
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| IRS990ScheduleD/OtherLiabilitiesOrgGrp/Amt | 1 | 478000 |
| IRS990ScheduleD/OtherLiabilitiesOrgGrp/Desc | 0 | Claims incurred but not reported |
| IRS990ScheduleD/OtherLiabilitiesOrgGrp/Desc | 1 | PRESCRIPTION CLAIMS PAYABLE |
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| IRS990ScheduleD/SupplementalInformationDetail/ExplanationTxt | 0 | 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 Plan has taken an uncertain position that more likely than not would not be sustained upon examination by the IRS. The plan administrator has analyzed the tax positions taken by the Plan and has concluded, as of June 30, 2016 and 2015, there are 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. |
| IRS990ScheduleD/SupplementalInformationDetail/ExplanationTxt | 1 | THE RETA TRUST, AS ESTABLISHED TO HOLD THE PLAN'S NET ASSETS, IS QUALIFIED UNDER SECTION 501(C)(9) OF THE INTERNAL REVENUE CODE AND BY THE CALIFORNIA FRANCHISE TAX BOARD UNDER SECTION 23701(I). ACCORDINGLY, THE RETA TRUST'S NET INVESTMENT INCOME IS EXEMPT FROM INCOME TAXES. THE RETA TRUST OBTAINED A FAVORABLE TAX DETERMINATION LETTER FROM THE INTERNAL REVENUE SERVICE EFFECTIVE AS OF AUGUST 5, 1977. THE TRUST HAS BEEN AMENDED SINCE RECEIPT OF THAT DETERMINATION LETTER. HOWEVER, THE TRUST ADMINISTRATOR AND THE TRUST'S TAX COUNSEL BELIEVE THAT THE TRUST IS CURRENTLY DESIGNED AND BEING OPERATED IN COMPLIANCE WITH THE APPLICABLE REQUIREMENTS OF THE INTERNAL REVENUE CODE. |
| IRS990ScheduleD/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | Part X, Line 2: |
| IRS990ScheduleD/SupplementalInformationDetail/FormAndLineReferenceDesc | 1 | PART IV, LINE 11F: |
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| IRS990ScheduleD/TotalExpensesPerForm990Amt | 0 | 192780989 |
| IRS990ScheduleD/TotalLiabilityAmt | 0 | 15695000 |
| IRS990ScheduleD/TotalRevenuePerForm990Amt | 0 | 183059493 |
| IRS990ScheduleD/TotalRevEtcAuditedFinclStmtAmt | 0 | 176748469 |
| IRS990ScheduleD/TotExpnsEtcAuditedFinclStmtAmt | 0 | 192536434 |
| IRS990/ScheduleJRequiredInd | 0 | 0 |
| IRS990ScheduleL/BusTrInvolveInterestedPrsnGrp/NameOfInterested/PersonNm | 0 | John Stein |
| IRS990ScheduleL/BusTrInvolveInterestedPrsnGrp/RelationshipDescriptionTxt | 0 | See Part V Below |
| IRS990ScheduleL/BusTrInvolveInterestedPrsnGrp/SharingOfRevenuesInd | 0 | 0 |
| IRS990ScheduleL/BusTrInvolveInterestedPrsnGrp/TransactionAmt | 0 | 315202 |
| IRS990ScheduleL/BusTrInvolveInterestedPrsnGrp/TransactionDesc | 0 | John Stein is the executive director of the trust by contract with a third-party management company and is an employee of that management company; the management company provides various services to the trust, which include the executive director position. The transaction amount is the amount the trust paid the management company for his services. |
| IRS990ScheduleL/SupplementalInformationDetail/ExplanationTxt | 0 | TRUST EXECUTIVE DIRECTOR/EMPLOYEE OF MANAGEMENT COMPANY PROVIDING SERVICES TO THE TRUST. |
| IRS990ScheduleL/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | PART IV |
| IRS990/ScheduleORequiredInd | 0 | 1 |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 0 | JOHN STEIN IS THE EXECUTIVE DIRECTOR OF THE RETA TRUST BY CONTRACT WITH A THIRD-PARTY MANAGEMENT COMPANY, GALLAGHER BENEFIT SERVICES, AND IS AN EMPLOYEE OF THAT COMPANY. GALLAGHER PROVIDES VARIOUS CONSULTING SERVICES TO THE RETA TRUST, WHICH INCLUDES THE EXECUTIVE DIRECTOR POSITION. THE RETA TRUST PAID $315,202 TO GALLAGHER FOR JOHN STEIN'S SERVICES, AS DISCLOSED IN SCHEDULE L. IN TOTAL, THE RETA TRUST PAID $2,086,645 TO GALLAGHER FOR THEIR SERVICES, AS DISCLOSED IN PART VII, SECTION B. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 1 | the members of the trust are the trustor organizations. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 2 | the trustor members vote to elect the governing body. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 3 | decisions of the governing body subject to approval by members are election of trustees, indemnification of any person who claims his or her actions were taken on behalf of the trust, and indemnification and removal of a member. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 4 | the executive director and general counsel review the form 990 with the auditors and key members of the governing body concurrent with the filing of the form. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 5 | executive director compensation is determined through use of a compensation study, with approval by the governance committee and the board. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 6 | governing documents, conflict of interest policy and financial statements are made available to the public upon request. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 7 | THE ORGANIZATION MADE A REASONABLE EFFORT TO COLLECT THE DATA TO COMPLETE PART VII BY REQUESTING FROM EACH TRUSTEE COMPENSATION AND BENEFITS PAID BY THE RELATED ORGANIZATION TO EACH TRUSTEE OF THE FILING ORGANIZATION, HOWEVER, NO ONE PROVIDED THE REQUESTED DATA. |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | Form 990, Part VI, Section A, line 3 |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 1 | Form 990, Part VI, Section A, line 6 |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 2 | Form 990, Part VI, Section A, line 7a |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 3 | Form 990, Part VI, Section A, line 7b |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 4 | Form 990, Part VI, Section B, line 11 |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 5 | Form 990, Part VI, Section B, line 15a |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 6 | Form 990, Part VI, Section C, line 19 |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 7 | Form 990, Part VII, Section A: |
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| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/ControlledOrganizationInd | 39 | 0 |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/ControlledOrganizationInd | 40 | 0 |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/ControlledOrganizationInd | 41 | 0 |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/ControlledOrganizationInd | 42 | 0 |