| IRS990/AccountantCompileOrReviewInd | 0 | 0 |
| IRS990/AccountsPayableAccrExpnssGrp/BOYAmt | 0 | 687358 |
| IRS990/AccountsPayableAccrExpnssGrp/EOYAmt | 0 | 543740 |
| IRS990/AccountsReceivableGrp/BOYAmt | 0 | 208381 |
| IRS990/AccountsReceivableGrp/EOYAmt | 0 | 243689 |
| IRS990/ActivitiesConductedPrtshpInd | 0 | 0 |
| IRS990/ActivityOrMissionDesc | 0 | PRESERVING TALIESIN AND TALIESIN WEST FOR FUTURE GENERATIONS, AND INSPIRING SOCIETY THROUGH AN UNDERSTANDING AND EXPERIENCE OF FRANK LLOYD WRIGHT'S IDEAS, ARCHITECTURE AND DESIGN. |
| IRS990/AdvertisingGrp/FundraisingAmt | 0 | 23865 |
| IRS990/AdvertisingGrp/ManagementAndGeneralAmt | 0 | 2031 |
| IRS990/AdvertisingGrp/ProgramServicesAmt | 0 | 245670 |
| IRS990/AdvertisingGrp/TotalAmt | 0 | 271566 |
| IRS990/AllOtherContributionsAmt | 0 | 2506396 |
| IRS990/AllOtherExpensesGrp/FundraisingAmt | 0 | 59837 |
| IRS990/AllOtherExpensesGrp/ManagementAndGeneralAmt | 0 | 5778 |
| IRS990/AllOtherExpensesGrp/ProgramServicesAmt | 0 | 218869 |
| IRS990/AllOtherExpensesGrp/TotalAmt | 0 | 284484 |
| IRS990/AnnualDisclosureCoveredPrsnInd | 0 | 1 |
| IRS990/AuditCommitteeInd | 0 | 1 |
| IRS990/BackupWthldComplianceInd | 0 | 1 |
| IRS990/BooksInCareOfDetail/PersonNm | 0 | JOY HANSON |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 6028005441 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 12621 N FRANK LLOYD WRIGHT BLVD |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | SCOTTSDALE |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | AZ |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 85259 |
| IRS990/BusinessRlnWithFamMemInd | 0 | 0 |
| IRS990/BusinessRlnWithOfficerEntInd | 0 | 0 |
| IRS990/BusinessRlnWithOrgMemInd | 0 | 0 |
| IRS990/CashNonInterestBearingGrp/BOYAmt | 0 | 491509 |
| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 170674 |
| IRS990/ChangeToOrgDocumentsInd | 0 | 0 |
| IRS990/CntrctRcvdGreaterThan100KCnt | 0 | 0 |
| IRS990/CollectionsOfArtInd | 0 | 1 |
| IRS990/CompCurrentOfcrDirectorsGrp/FundraisingAmt | 0 | 37320 |
| IRS990/CompCurrentOfcrDirectorsGrp/ManagementAndGeneralAmt | 0 | 7997 |
| IRS990/CompCurrentOfcrDirectorsGrp/ProgramServicesAmt | 0 | 221256 |
| IRS990/CompCurrentOfcrDirectorsGrp/TotalAmt | 0 | 266573 |
| IRS990/CompensationFromOtherSrcsInd | 0 | 0 |
| IRS990/CompensationProcessCEOInd | 0 | 1 |
| IRS990/CompensationProcessOtherInd | 0 | 1 |
| IRS990/ConflictOfInterestPolicyInd | 0 | 1 |
| IRS990/ConservationEasementsInd | 0 | 1 |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | 0 |
| IRS990/CostOfGoodsSoldAmt | 0 | 884161 |
| IRS990/CreditCounselingInd | 0 | 0 |
| IRS990/CYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/CYContributionsGrantsAmt | 0 | 2506396 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 0 |
| IRS990/CYInvestmentIncomeAmt | 0 | 86102 |
| IRS990/CYOtherExpensesAmt | 0 | 3610697 |
| IRS990/CYOtherRevenueAmt | 0 | 1094371 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 5202188 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | 850812 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 4427548 |
| IRS990/CYTotalExpensesAmt | 0 | 8038245 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 933188 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 8889057 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | 0 |
| IRS990/DeductibleArtContributionInd | 0 | 0 |
| IRS990/DeductibleNonCashContriInd | 0 | 1 |
| IRS990/DeferredRevenueGrp/BOYAmt | 0 | 104762 |
| IRS990/DeferredRevenueGrp/EOYAmt | 0 | 77092 |
| IRS990/DelegationOfMgmtDutiesInd | 0 | 0 |
| IRS990/DepreciationDepletionGrp/FundraisingAmt | 0 | 12794 |
| IRS990/DepreciationDepletionGrp/ManagementAndGeneralAmt | 0 | 20093 |
| IRS990/DepreciationDepletionGrp/ProgramServicesAmt | 0 | 640463 |
| IRS990/DepreciationDepletionGrp/TotalAmt | 0 | 673350 |
| IRS990/Desc | 0 | BUILDING PRESERVATION - THE FRANK LLOYD WRIGHT FOUNDATION INVESTS CAPITAL AND CONSIDERABLE EFFORTS IN ORDER TO PROTECT, MAINTAIN, AND RESTORE THE ARCHITECTURALLY HISTORIC STRUCTURES AND SPACES THAT COMPRISE ITS CAMPUSES IN BOTH SCOTTSDALE, ARIZONA AND SPRING GREEN, WISCONSIN. |
| IRS990/DescribedInSection501c3Ind | 0 | 1 |
| IRS990/DisregardedEntityInd | 0 | 0 |
| IRS990/DocumentRetentionPolicyInd | 0 | 1 |
| IRS990/DonatedServicesAndUseFcltsAmt | 0 | -1640 |
| IRS990/DonorAdvisedFundInd | 0 | 0 |
| IRS990/ElectionOfBoardMembersInd | 0 | 0 |
| IRS990/EmployeeCnt | 0 | 136 |
| IRS990/EmploymentTaxReturnsFiledInd | 0 | 1 |
| IRS990/EngagedInExcessBenefitTransInd | 0 | 0 |
| IRS990/ExpenseAmt | 0 | 2056395 |
| IRS990/FamilyOrBusinessRlnInd | 0 | 0 |
| IRS990/FederalGrantAuditRequiredInd | 0 | 0 |
| IRS990/FeesForServicesAccountingGrp/ManagementAndGeneralAmt | 0 | 28600 |
| IRS990/FeesForServicesAccountingGrp/TotalAmt | 0 | 28600 |
| IRS990/FeesForServicesLegalGrp/ManagementAndGeneralAmt | 0 | 8200 |
| IRS990/FeesForServicesLegalGrp/ProgramServicesAmt | 0 | 75737 |
| IRS990/FeesForServicesLegalGrp/TotalAmt | 0 | 83937 |
| IRS990/FeesForServicesOtherGrp/FundraisingAmt | 0 | 36642 |
| IRS990/FeesForServicesOtherGrp/ManagementAndGeneralAmt | 0 | 14361 |
| IRS990/FeesForServicesOtherGrp/ProgramServicesAmt | 0 | 299088 |
| IRS990/FeesForServicesOtherGrp/TotalAmt | 0 | 350091 |
| IRS990/ForeignActivitiesInd | 0 | 1 |
| IRS990/ForeignFinancialAccountInd | 0 | 0 |
| IRS990/ForeignOfficeInd | 0 | 0 |
| IRS990/Form8282PropertyDisposedOfInd | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 0 | 10.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 1 | 5.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 2 | 5.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 3 | 5.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 4 | 5.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 5 | 5.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 6 | 5.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 7 | 5.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 8 | 10.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 9 | 5.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 10 | 5.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 11 | 5.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 12 | 5.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 13 | 5.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 14 | 5.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 15 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 16 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 17 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 18 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/HighestCompensatedEmployeeInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/HighestCompensatedEmployeeInd | 1 | 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/IndividualTrusteeOrDirectorInd | 11 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 12 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 13 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 14 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 3 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 4 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 5 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 6 | X |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 9 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 10 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 11 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 12 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 13 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 14 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 15 | 7109 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 16 | 9370 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 17 | 16887 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 18 | 6158 |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 0 | MAJA WESSELS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | ALANNA MACK |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | RAY LIPMAN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | SEAN RUSH |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | TIMOTHY RADDEN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | JOEL BENKIE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | SUSAN JACOBS-LOCKHART |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | CATHERINE LENHART |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | TK MCCLINTOCK |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 9 | CHRISTOPHER THOMPSON |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 10 | ROBERT SKERKER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 11 | MICHAEL DESMOND |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 12 | MARK DREHER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 13 | HEATHER LENKIN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 14 | ANNE STUPP |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 15 | STUART GRAFF |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 16 | JOY HANSON |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 17 | FREDERICK PROZILLO |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 18 | AMY FLYNN |
| 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/ReportableCompFromOrgAmt | 10 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 11 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 12 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 13 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 14 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 15 | 257219 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 16 | 146494 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 17 | 123950 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 18 | 118857 |
| 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 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 12 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 13 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 14 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 15 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 16 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 17 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 18 | 0 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 0 | CHAIR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | VICE CHAIR (THRU 8/17/18) |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | TREASURER (THRU 1/2/19) |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | SECRETARY |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | TREASURER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 6 | TRUSTEE (THRU 8/17/18) |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 7 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 8 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 9 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 10 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 11 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 12 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 13 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 14 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 15 | CEO & PRESIDENT |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 16 | VP OF FINANCE & COO |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 17 | VP OF PRESERVATION |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 18 | DIRECTOR OF I.T. |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | 1 |
| IRS990/Form990TFiledInd | 0 | 1 |
| IRS990/FormationYr | 0 | 1965 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | 0 |
| IRS990/FSAuditedBasisGrp/SeparateBasisFinclStmtInd | 0 | X |
| IRS990/FSAuditedInd | 0 | 1 |
| IRS990/FundraisingActivitiesInd | 0 | 0 |
| IRS990/GainOrLossGrp/SecuritiesAmt | 0 | 18004 |
| IRS990/GamingActivitiesInd | 0 | 0 |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 12 |
| IRS990/GrantAmt | 0 | 0 |
| IRS990/GrantsToIndividualsInd | 0 | 0 |
| IRS990/GrantsToOrganizationsInd | 0 | 0 |
| IRS990/GrantToRelatedPersonInd | 0 | 0 |
| IRS990/GrossAmountSalesAssetsGrp/SecuritiesAmt | 0 | 402575 |
| IRS990/GrossReceiptsAmt | 0 | 10157789 |
| IRS990/GrossRentsGrp/RealAmt | 0 | 34208 |
| IRS990/GrossSalesOfInventoryAmt | 0 | 1919831 |
| IRS990/GroupReturnForAffiliatesInd | 0 | 0 |
| IRS990/IncludeFIN48FootnoteInd | 0 | 1 |
| IRS990/IndependentAuditFinclStmtInd | 0 | 1 |
| IRS990/IndependentVotingMemberCnt | 0 | 12 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 4 |
| IRS990/IndoorTanningServicesInd | 0 | 0 |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InformationTechnologyGrp/FundraisingAmt | 0 | 53765 |
| IRS990/InformationTechnologyGrp/ManagementAndGeneralAmt | 0 | 16921 |
| IRS990/InformationTechnologyGrp/ProgramServicesAmt | 0 | 172642 |
| IRS990/InformationTechnologyGrp/TotalAmt | 0 | 243328 |
| IRS990/InsuranceGrp/FundraisingAmt | 0 | 17475 |
| IRS990/InsuranceGrp/ManagementAndGeneralAmt | 0 | 23633 |
| IRS990/InsuranceGrp/ProgramServicesAmt | 0 | 148882 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 189990 |
| IRS990/IntangibleAssetsGrp/EOYAmt | 0 | 38191 |
| IRS990/InventoriesForSaleOrUseGrp/BOYAmt | 0 | 203843 |
| IRS990/InventoriesForSaleOrUseGrp/EOYAmt | 0 | 209604 |
| IRS990/InvestmentIncomeGrp/ExclusionAmt | 0 | 68098 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 68098 |
| IRS990/InvestmentInJointVentureInd | 0 | 0 |
| IRS990/InvestmentsPubTradedSecGrp/BOYAmt | 0 | 2382980 |
| IRS990/InvestmentsPubTradedSecGrp/EOYAmt | 0 | 2139710 |
| IRS990/IRPDocumentCnt | 0 | 83 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LandBldgEquipAccumDeprecAmt | 0 | 9508336 |
| IRS990/LandBldgEquipBasisNetGrp/BOYAmt | 0 | 9791441 |
| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 10086475 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 19594811 |
| IRS990/LegalDomicileStateCd | 0 | AZ |
| IRS990/LessCostOthBasisSalesExpnssGrp/SecuritiesAmt | 0 | 384571 |
| IRS990/LessRentalExpensesGrp/RealAmt | 0 | 0 |
| IRS990/LoanOutstandingInd | 0 | 0 |
| IRS990/LobbyingActivitiesInd | 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 | PRESERVING TALIESIN AND TALIESIN WEST FOR FUTURE GENERATION, AND INSPIRING SOCIETY THROUGH AN UNDERSTANDING AND EXPERIENCE OF FRANK LLOYD WRIGHT'S IDEAS, ARCHITECTURE AND DESIGN. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | 0 |
| IRS990/MoreThan5000KToOrgInd | 0 | 0 |
| IRS990/MortgNotesPyblScrdInvstPropGrp/BOYAmt | 0 | 76454 |
| IRS990/MortgNotesPyblScrdInvstPropGrp/EOYAmt | 0 | 580187 |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 15186342 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 16097769 |
| IRS990/NetGainOrLossInvestmentsGrp/ExclusionAmt | 0 | 18004 |
| IRS990/NetGainOrLossInvestmentsGrp/TotalRevenueColumnAmt | 0 | 18004 |
| IRS990/NetIncomeOrLossGrp/RelatedOrExemptFuncIncomeAmt | 0 | 754203 |
| IRS990/NetIncomeOrLossGrp/TotalRevenueColumnAmt | 0 | 1035670 |
| IRS990/NetIncomeOrLossGrp/UnrelatedBusinessRevenueAmt | 0 | 281467 |
| IRS990/NetRentalIncomeOrLossGrp/ExclusionAmt | 0 | 34208 |
| IRS990/NetRentalIncomeOrLossGrp/TotalRevenueColumnAmt | 0 | 34208 |
| IRS990/NetUnrelatedBusTxblIncmAmt | 0 | 9493 |
| IRS990/NetUnrlzdGainsLossesInvstAmt | 0 | 62255 |
| IRS990/NoncashContributionsAmt | 0 | 670742 |
| IRS990/NondeductibleContributionsInd | 0 | 0 |
| IRS990/OccupancyGrp/FundraisingAmt | 0 | 5722 |
| IRS990/OccupancyGrp/ManagementAndGeneralAmt | 0 | 3279 |
| IRS990/OccupancyGrp/ProgramServicesAmt | 0 | 667874 |
| IRS990/OccupancyGrp/TotalAmt | 0 | 676875 |
| IRS990/OfficeExpensesGrp/FundraisingAmt | 0 | 43517 |
| IRS990/OfficeExpensesGrp/ManagementAndGeneralAmt | 0 | 2161 |
| IRS990/OfficeExpensesGrp/ProgramServicesAmt | 0 | 122715 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 168393 |
| IRS990/OfficerMailingAddressInd | 0 | 0 |
| IRS990/OperateHospitalInd | 0 | 0 |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsSFAS117Ind | 0 | X |
| IRS990/OtherAssetsTotalGrp/BOYAmt | 0 | 2780092 |
| IRS990/OtherAssetsTotalGrp/EOYAmt | 0 | 2859567 |
| IRS990/OtherChangesInNetAssetsAmt | 0 | 0 |
| IRS990/OtherEmployeeBenefitsGrp/FundraisingAmt | 0 | 35787 |
| IRS990/OtherEmployeeBenefitsGrp/ManagementAndGeneralAmt | 0 | 6978 |
| IRS990/OtherEmployeeBenefitsGrp/ProgramServicesAmt | 0 | 284025 |
| IRS990/OtherEmployeeBenefitsGrp/TotalAmt | 0 | 326790 |
| IRS990/OtherExpensesGrp/Desc | 0 | RESERVATION EXPENSE |
| IRS990/OtherExpensesGrp/Desc | 1 | SUPPLIES |
| IRS990/OtherExpensesGrp/Desc | 2 | PROGRAM EXPENSES |
| IRS990/OtherExpensesGrp/FundraisingAmt | 0 | 6029 |
| IRS990/OtherExpensesGrp/FundraisingAmt | 1 | 36972 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 0 | 2170 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 1 | 1198 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 0 | 323634 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 1 | 130675 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 2 | 72223 |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 323634 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 138874 |
| IRS990/OtherExpensesGrp/TotalAmt | 2 | 110393 |
| IRS990/OtherRevenueMiscGrp/BusinessCd | 0 | 531390 |
| IRS990/OtherRevenueMiscGrp/Desc | 0 | GUEST HOUSING |
| IRS990/OtherRevenueMiscGrp/TotalRevenueColumnAmt | 0 | 24493 |
| IRS990/OtherRevenueMiscGrp/UnrelatedBusinessRevenueAmt | 0 | 24493 |
| IRS990/OtherRevenueTotalAmt | 0 | 24493 |
| IRS990/OtherSalariesAndWagesGrp/FundraisingAmt | 0 | 512638 |
| IRS990/OtherSalariesAndWagesGrp/ManagementAndGeneralAmt | 0 | 125475 |
| IRS990/OtherSalariesAndWagesGrp/ProgramServicesAmt | 0 | 2906873 |
| IRS990/OtherSalariesAndWagesGrp/TotalAmt | 0 | 3544986 |
| IRS990/OwnWebsiteInd | 0 | X |
| IRS990/PartialLiquidationInd | 0 | 0 |
| IRS990/PayPremiumsPrsnlBnftCntrctInd | 0 | 0 |
| IRS990/PayrollTaxesGrp/FundraisingAmt | 0 | 40829 |
| IRS990/PayrollTaxesGrp/ManagementAndGeneralAmt | 0 | 1369 |
| IRS990/PayrollTaxesGrp/ProgramServicesAmt | 0 | 231456 |
| IRS990/PayrollTaxesGrp/TotalAmt | 0 | 273654 |
| IRS990/PensionPlanContributionsGrp/FundraisingAmt | 0 | 1943 |
| IRS990/PensionPlanContributionsGrp/ManagementAndGeneralAmt | 0 | 2702 |
| IRS990/PensionPlanContributionsGrp/ProgramServicesAmt | 0 | 10900 |
| IRS990/PensionPlanContributionsGrp/TotalAmt | 0 | 15545 |
| IRS990/PledgesAndGrantsReceivableGrp/EOYAmt | 0 | 903173 |
| IRS990/PoliticalCampaignActyInd | 0 | 0 |
| IRS990/PrepaidExpensesDefrdChargesGrp/BOYAmt | 0 | 156325 |
| IRS990/PrepaidExpensesDefrdChargesGrp/EOYAmt | 0 | 154105 |
| IRS990/PrincipalOfficerNm | 0 | STUART GRAFF |
| IRS990/ProfessionalFundraisingInd | 0 | 0 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 0 | 561520 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 1 | 900099 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 2 | 900099 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 3 | 900099 |
| IRS990/ProgramServiceRevenueGrp/Desc | 0 | PUBLIC TOURS & ACCESS |
| IRS990/ProgramServiceRevenueGrp/Desc | 1 | LICENSING PROGRAM |
| IRS990/ProgramServiceRevenueGrp/Desc | 2 | EDUCATIONAL OUTREACH |
| IRS990/ProgramServiceRevenueGrp/Desc | 3 | ANNUAL ACCESS FEE |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 0 | 3902544 |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 1 | 1004354 |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 2 | 245290 |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 3 | 50000 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 0 | 3902544 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 1 | 1004354 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 2 | 245290 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 3 | 50000 |
| IRS990/ProgSrvcAccomActy2Grp/Desc | 0 | PUBLIC TOURS AND ACCESS PROGRAM - THE FRANK LLOYD WRIGHT FOUNDATION OFFERS TOURS AND EDUCATIONAL OUTREACH PROGRAMS TO INCREASE PUBLIC AWARENESS OF THE WORK OF FRANK LLOYD WRIGHT AND THE FIELD OF ARCHITECTURE. ABOUT 109,000 INDIVIDUALS VISITED THE HISTORIC SCOTTSDALE, ARIZONA, LANDMARK DURING THE FISCAL YEAR ENDED JULY 31, 2019. |
| IRS990/ProgSrvcAccomActy2Grp/ExpenseAmt | 0 | 1716240 |
| IRS990/ProgSrvcAccomActy2Grp/GrantAmt | 0 | 0 |
| IRS990/ProgSrvcAccomActy2Grp/RevenueAmt | 0 | 3902544 |
| IRS990/ProgSrvcAccomActy3Grp/Desc | 0 | RETAIL STORE; LICENSING PROGRAM; K - 12 EDUCATION PROGRAMS, PARTNERSHIPS. |
| IRS990/ProgSrvcAccomActy3Grp/ExpenseAmt | 0 | 3056267 |
| IRS990/ProgSrvcAccomActy3Grp/RevenueAmt | 0 | 2053847 |
| IRS990/ProhibitedTaxShelterTransInd | 0 | 0 |
| IRS990/PYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/PYContributionsGrantsAmt | 0 | 1795583 |
| IRS990/PYExcessBenefitTransInd | 0 | 0 |
| IRS990/PYGrantsAndSimilarPaidAmt | 0 | 50000 |
| IRS990/PYInvestmentIncomeAmt | 0 | 74408 |
| IRS990/PYOtherExpensesAmt | 0 | 3622905 |
| IRS990/PYOtherRevenueAmt | 0 | 1111934 |
| IRS990/PYProgramServiceRevenueAmt | 0 | 4969737 |
| IRS990/PYRevenuesLessExpensesAmt | 0 | 300051 |
| IRS990/PYSalariesCompEmpBnftPaidAmt | 0 | 3978706 |