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| 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 |
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| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 3 | 0 |
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| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 7 | 0 |
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| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | KATHLEEN LODL |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | ROBIN BOX |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | JESSICA ASKINS |
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| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 1 | 0 |
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| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 5 | 0 |
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| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 7 | 0 |
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| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | PRESIDENT |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | COLLEGE REP |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 6 | PRESIDENT-EL |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 7 | EXECUTIVE DI |
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| IRS990/FormationYr | 0 | 1970 |
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| IRS990/FSAuditedInd | 0 | true |
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| IRS990/GamingActivitiesInd | 0 | false |
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| IRS990/GroupReturnForAffiliatesInd | 0 | false |
| IRS990/IncludeFIN48FootnoteInd | 0 | false |
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| IRS990/InfoInScheduleOPartXIIInd | 0 | X |
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| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus2YearsAmt | 0 | 22911 |
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| IRS990ScheduleA/TotalSupportAmt | 0 | 1137765 |
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| IRS990ScheduleD/CYMinus1YrEndwmtFundGrp/EndYearBalanceAmt | 0 | 2690683 |
| IRS990ScheduleD/CYMinus1YrEndwmtFundGrp/GrantsOrScholarshipsAmt | 0 | 70434 |
| IRS990ScheduleD/CYMinus1YrEndwmtFundGrp/InvestmentEarningsOrLossesAmt | 0 | 291202 |
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| IRS990ScheduleI/GrantsOtherAsstToIndivInUSGrp/CashGrantAmt | 1 | 2250 |
| IRS990ScheduleI/GrantsOtherAsstToIndivInUSGrp/CashGrantAmt | 2 | 4189 |
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| IRS990ScheduleI/GrantsOtherAsstToIndivInUSGrp/GrantTypeTxt | 1 | GRADUATE FELLOWSHIPS |
| IRS990ScheduleI/GrantsOtherAsstToIndivInUSGrp/GrantTypeTxt | 2 | PROFESSIONAL AWARDS |
| IRS990ScheduleI/GrantsOtherAsstToIndivInUSGrp/RecipientCnt | 0 | 44 |
| IRS990ScheduleI/GrantsOtherAsstToIndivInUSGrp/RecipientCnt | 1 | 3 |
| IRS990ScheduleI/GrantsOtherAsstToIndivInUSGrp/RecipientCnt | 2 | 12 |
| IRS990/ScheduleJRequiredInd | 0 | false |
| IRS990/ScheduleORequiredInd | 0 | true |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 0 | FORM 990 IS REVIEWED AND APPROVED THE EXECUTIVE DIRECTOR AND MEMBERS OF THE EXECUTIVE BOARD PRIOR TO FILING. ADDITIONALLY, THE EXECUTIVE DIRECTOR AND EXECUTIVE BOARD EVALUATES THE COMPETENCY OF THE PERSON(S) OR FIRM HIRED TO PREPARE THE RETURN AND CONFIRMS THAT THE RETURN IS FILED TIMELY. THE EXECUTIVE DIRECTOR AND EXECUTIVE BOARD CONSIDERS THIS AN APPROPRIATE FIDUCIARY PROCESS. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 1 | DIRECTORS AND OFFICERS ARE RQUIRED TO DISCLOSE AND SIGN CONFLICT OF INTEREST STATEMENTS ON AN ANNUAL BASIS. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 2 | THE FOUNDATION MAKES ITS FORM 990 AND GOVERNING DOCUMENTS AVAILABLE TO THE PUBLIC ON ITS WEBSITE, GUIDESTAR, AND UPON REQUEST. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 3 | THE BOARD OF DIRECTORS APPROVED A MOTION TO CHANGE THE FOUNDATION'S ACCOUNTING BASIS FROM MODIFIED CASH BASIS TO GENERALLY ACCEPTED ACCOUNTING PRINCIPLES, WHICH IS AN ACCRUAL BASIS OF ACCOUNTING. |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | FORM 990, PAGE 6, PART VI, LINE 11B |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 1 | FORM 990, PAGE 6, PART VI, LINE 12C |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 2 | FORM 990, PAGE 6, PART VI, LINE 19 |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 3 | FORM 990, PAGE 12, PART XII, LINE 1 |
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| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/USAddress/AddressLine1Txt | 0 | PO BOX 50970 |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/USAddress/CityNm | 0 | BOWLING GREEN |
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| IRS990ScheduleR/SharingOfFacilitiesInd | 0 | true |
| IRS990ScheduleR/TransferFromOtherOrgInd | 0 | false |
| IRS990ScheduleR/TransferToOtherOrgInd | 0 | false |
| IRS990/SchoolOperatingInd | 0 | false |
| IRS990/SignificantChangeInd | 0 | false |
| IRS990/SignificantNewProgramSrvcInd | 0 | false |
| IRS990/SubjectToProxyTaxInd | 0 | false |
| IRS990/TaxablePartyNotificationInd | 0 | false |
| IRS990/TaxExemptBondsInd | 0 | false |
| IRS990/TemporarilyRstrNetAssetsGrp/BOYAmt | 0 | 2063677 |
| IRS990/TemporarilyRstrNetAssetsGrp/EOYAmt | 0 | 2228659 |
| IRS990/TempOrPermanentEndowmentsInd | 0 | true |
| IRS990/TerminateOperationsInd | 0 | false |
| IRS990/TotalAssetsBOYAmt | 0 | 2707307 |
| IRS990/TotalAssetsEOYAmt | 0 | 2919346 |
| IRS990/TotalAssetsGrp/BOYAmt | 0 | 2707307 |
| IRS990/TotalAssetsGrp/EOYAmt | 0 | 2919346 |
| IRS990/TotalCompGreaterThan150KInd | 0 | false |
| IRS990/TotalContributionsAmt | 0 | 30614 |
| IRS990/TotalEmployeeCnt | 0 | 0 |
| IRS990/TotalFunctionalExpensesGrp/FundraisingAmt | 0 | 500 |
| IRS990/TotalFunctionalExpensesGrp/ManagementAndGeneralAmt | 0 | 8445 |
| IRS990/TotalFunctionalExpensesGrp/ProgramServicesAmt | 0 | 89649 |
| IRS990/TotalFunctionalExpensesGrp/TotalAmt | 0 | 98594 |
| IRS990/TotalGrossUBIAmt | 0 | 0 |
| IRS990/TotalLiabilitiesEOYAmt | 0 | 0 |
| IRS990/TotalLiabilitiesGrp/BOYAmt | 0 | 0 |
| IRS990/TotalLiabilitiesGrp/EOYAmt | 0 | 0 |
| IRS990/TotalNetAssetsFundBalanceGrp/BOYAmt | 0 | 2707307 |
| IRS990/TotalNetAssetsFundBalanceGrp/EOYAmt | 0 | 2919346 |
| IRS990/TotalProgramServiceExpensesAmt | 0 | 89649 |
| IRS990/TotalRevenueGrp/ExclusionAmt | 0 | 122386 |
| IRS990/TotalRevenueGrp/TotalRevenueColumnAmt | 0 | 153000 |
| IRS990/TotalVolunteersCnt | 0 | 200 |
| IRS990/TotLiabNetAssetsFundBalanceGrp/BOYAmt | 0 | 2707307 |
| IRS990/TotLiabNetAssetsFundBalanceGrp/EOYAmt | 0 | 2919346 |
| IRS990/TotReportableCompRltdOrgAmt | 0 | 60610 |
| IRS990/TransactionWithControlEntInd | 0 | false |
| IRS990/TrnsfrExmptNonChrtblRltdOrgInd | 0 | true |
| IRS990/TypeOfOrganizationCorpInd | 0 | X |
| IRS990/UnrelatedBusIncmOverLimitInd | 0 | false |
| IRS990/UnrestrictedNetAssetsGrp/BOYAmt | 0 | 643630 |
| IRS990/UnrestrictedNetAssetsGrp/EOYAmt | 0 | 690687 |
| IRS990/UponRequestInd | 0 | X |
| IRS990/USAddress/AddressLine1Txt | 0 | PO BOX 50970 |
| IRS990/USAddress/CityNm | 0 | BOWLING GREEN |
| IRS990/USAddress/StateAbbreviationCd | 0 | KY |
| IRS990/USAddress/ZIPCd | 0 | 42102 |
| IRS990/VotingMembersGoverningBodyCnt | 0 | 7 |
| IRS990/VotingMembersIndependentCnt | 0 | 6 |
| IRS990/WebsiteAddressTxt | 0 | WWW.PHIU.ORG |
| IRS990/WhistleblowerPolicyInd | 0 | true |
| ReturnHeader/BuildTS | 0 | 2019-02-21 02:37:17Z |
| ReturnHeader/BusinessOfficerGrp/DiscussWithPaidPreparerInd | 0 | true |
| ReturnHeader/BusinessOfficerGrp/PersonNm | 0 | MELISSA MARTIN |
| ReturnHeader/BusinessOfficerGrp/PersonTitleTxt | 0 | EXECUTIVE DIRECTOR |
| ReturnHeader/BusinessOfficerGrp/PhoneNum | 0 | 2709041340 |
| ReturnHeader/BusinessOfficerGrp/SignatureDt | 0 | 2019-02-25 |
| ReturnHeader/Filer/BusinessName/BusinessNameLine1Txt | 0 | PHI UPSILON OMICRON EDUCATIONAL |
| ReturnHeader/Filer/BusinessName/BusinessNameLine2Txt | 0 | FOUNDATION INC |
| ReturnHeader/Filer/BusinessNameControlTxt | 0 | PHIU |
| ReturnHeader/Filer/EIN | 0 | 450314283 |
| ReturnHeader/Filer/PhoneNum | 0 | 2709041340 |
| ReturnHeader/Filer/USAddress/AddressLine1Txt | 0 | PO BOX 50970 |
| ReturnHeader/Filer/USAddress/CityNm | 0 | BOWLING GREEN |
| ReturnHeader/Filer/USAddress/StateAbbreviationCd | 0 | KY |
| ReturnHeader/Filer/USAddress/ZIPCd | 0 | 42102 |
| ReturnHeader/FilingSecurityInformation/AtSubmissionCreationDeviceId | 0 | 115636785ADE0E6A6FCF2906D87E3CA63624C2AB |
| ReturnHeader/FilingSecurityInformation/AtSubmissionFilingDeviceId | 0 | 80796B9BCA947A8860D2EBC56D4392EED7FDFFD3 |
| ReturnHeader/FilingSecurityInformation/FilingLicenseTypeCd | 0 | P |
| ReturnHeader/FilingSecurityInformation/IPAddress/IPv4AddressTxt | 0 | 208.80.208.98 |
| ReturnHeader/FilingSecurityInformation/IPDt | 0 | 2019-02-25 |
| ReturnHeader/FilingSecurityInformation/IPTimezoneCd | 0 | CS |
| ReturnHeader/FilingSecurityInformation/IPTm | 0 | 20:28:10 |
| ReturnHeader/PreparerFirmGrp/PreparerFirmEIN | 0 | 454572379 |
| ReturnHeader/PreparerFirmGrp/PreparerFirmName/BusinessNameLine1Txt | 0 | HENSLEY & THRONEBERRY CPAS |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/AddressLine1Txt | 0 | 324 EAST 10TH AVENUE |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/CityNm | 0 | BOWLING GREEN |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/StateAbbreviationCd | 0 | KY |