| IRS990/AccountantCompileOrReviewInd | 0 | 0 |
| IRS990/AccountsPayableAccrExpnssGrp/BOYAmt | 0 | 272073 |
| IRS990/AccountsPayableAccrExpnssGrp/EOYAmt | 0 | 338902 |
| IRS990/ActivitiesConductedPrtshpInd | 0 | 0 |
| IRS990/ActivityOrMissionDesc | 0 | BRIGHTFOCUS FOUNDATION SEEKS TO SAVE MIND AND SIGHT. |
| IRS990/AllOtherContributionsAmt | 0 | 31995261 |
| IRS990/AnnualDisclosureCoveredPrsnInd | 0 | 1 |
| IRS990/AuditCommitteeInd | 0 | 1 |
| IRS990/BackupWthldComplianceInd | 0 | 1 |
| IRS990/BooksInCareOfDetail/BusinessName/BusinessNameLine1Txt | 0 | DAVID F MARKS CPA CMA |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 3019483244 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 22512 GATEWAY CENTER DRIVE |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | CLARKSBURG |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | MD |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 20871 |
| IRS990/BusinessRlnWithFamMemInd | 0 | 0 |
| IRS990/BusinessRlnWithOfficerEntInd | 0 | 0 |
| IRS990/BusinessRlnWithOrgMemInd | 0 | 0 |
| IRS990/CashNonInterestBearingGrp/BOYAmt | 0 | 1594850 |
| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 2635346 |
| IRS990/ChangeToOrgDocumentsInd | 0 | 0 |
| IRS990/CntrctRcvdGreaterThan100KCnt | 0 | 8 |
| IRS990/CollectionsOfArtInd | 0 | 0 |
| IRS990/CompCurrentOfcrDirectorsGrp/FundraisingAmt | 0 | 263255 |
| IRS990/CompCurrentOfcrDirectorsGrp/ManagementAndGeneralAmt | 0 | 311892 |
| IRS990/CompCurrentOfcrDirectorsGrp/ProgramServicesAmt | 0 | 768551 |
| IRS990/CompCurrentOfcrDirectorsGrp/TotalAmt | 0 | 1343698 |
| IRS990/CompensationFromOtherSrcsInd | 0 | 0 |
| IRS990/CompensationProcessCEOInd | 0 | 1 |
| IRS990/CompensationProcessOtherInd | 0 | 1 |
| IRS990/ConferencesMeetingsGrp/FundraisingAmt | 0 | 4291 |
| IRS990/ConferencesMeetingsGrp/ManagementAndGeneralAmt | 0 | 8520 |
| IRS990/ConferencesMeetingsGrp/ProgramServicesAmt | 0 | 171843 |
| IRS990/ConferencesMeetingsGrp/TotalAmt | 0 | 184654 |
| IRS990/ConflictOfInterestPolicyInd | 0 | 1 |
| IRS990/ConservationEasementsInd | 0 | 0 |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | 1 |
| IRS990/ContractorCompensationGrp/CompensationAmt | 0 | 6820948 |
| IRS990/ContractorCompensationGrp/CompensationAmt | 1 | 329932 |
| IRS990/ContractorCompensationGrp/CompensationAmt | 2 | 207039 |
| IRS990/ContractorCompensationGrp/CompensationAmt | 3 | 138675 |
| IRS990/ContractorCompensationGrp/CompensationAmt | 4 | 136262 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/AddressLine1Txt | 0 | 201 SUMMER STREET |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/AddressLine1Txt | 1 | 2300 CLARENDON BLVD SUITE 925 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/AddressLine1Txt | 2 | 160 STONE STREET |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/AddressLine1Txt | 3 | 1899 L STREET NW |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/AddressLine1Txt | 4 | 2977 STEWART LOOP UNIT B |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/CityNm | 0 | HOLLISTON |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/CityNm | 1 | ARLINGTON |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/CityNm | 2 | STONEVILLE |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/CityNm | 3 | WASHINGTON |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/CityNm | 4 | FORT MEADE |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/StateAbbreviationCd | 0 | MA |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/StateAbbreviationCd | 1 | VA |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/StateAbbreviationCd | 2 | NC |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/StateAbbreviationCd | 3 | DC |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/StateAbbreviationCd | 4 | MD |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/ZIPCd | 0 | 01746 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/ZIPCd | 1 | 22201 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/ZIPCd | 2 | 27048 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/ZIPCd | 3 | 20036 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/ZIPCd | 4 | 20755 |
| IRS990/ContractorCompensationGrp/ContractorName/BusinessName/BusinessNameLine1Txt | 0 | RKD GROUP |
| IRS990/ContractorCompensationGrp/ContractorName/BusinessName/BusinessNameLine1Txt | 1 | BEACONFIRE REDENGINE |
| IRS990/ContractorCompensationGrp/ContractorName/BusinessName/BusinessNameLine1Txt | 2 | DATA MANAGEMENT INC |
| IRS990/ContractorCompensationGrp/ContractorName/BusinessName/BusinessNameLine1Txt | 3 | RAFFA PC |
| IRS990/ContractorCompensationGrp/ContractorName/BusinessName/BusinessNameLine1Txt | 4 | GLOBAL TECHNOLOGY SOLUTIONS INC |
| IRS990/ContractorCompensationGrp/ServicesDesc | 0 | PUBLIC AWARENESS CONSUL. & MATERIALS |
| IRS990/ContractorCompensationGrp/ServicesDesc | 1 | ONLINE PUBLIC AWARENESS CONSULTING |
| IRS990/ContractorCompensationGrp/ServicesDesc | 2 | DATABASE MANAGEMENT |
| IRS990/ContractorCompensationGrp/ServicesDesc | 3 | ACCOUNTING & HUMAN RESOURCES |
| IRS990/ContractorCompensationGrp/ServicesDesc | 4 | BUILDING & OFFICE SERVICES |
| IRS990/ContriRptFundraisingEventAmt | 0 | 191321 |
| IRS990/CreditCounselingInd | 0 | 0 |
| IRS990/CYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/CYContributionsGrantsAmt | 0 | 32362197 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 13475744 |
| IRS990/CYInvestmentIncomeAmt | 0 | 1854269 |
| IRS990/CYOtherExpensesAmt | 0 | 16718081 |
| IRS990/CYOtherRevenueAmt | 0 | 688039 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 0 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | -910986 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 4985215 |
| IRS990/CYTotalExpensesAmt | 0 | 35815491 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 7064323 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 636451 |
| IRS990/CYTotalRevenueAmt | 0 | 34904505 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | 0 |
| IRS990/DeductibleArtContributionInd | 0 | 0 |
| IRS990/DeductibleNonCashContriInd | 0 | 1 |
| IRS990/DeferredRevenueGrp/BOYAmt | 0 | 0 |
| IRS990/DeferredRevenueGrp/EOYAmt | 0 | 109250 |
| IRS990/DelegationOfMgmtDutiesInd | 0 | 0 |
| IRS990/DepreciationDepletionGrp/FundraisingAmt | 0 | 68293 |
| IRS990/DepreciationDepletionGrp/ManagementAndGeneralAmt | 0 | 154827 |
| IRS990/DepreciationDepletionGrp/ProgramServicesAmt | 0 | 294333 |
| IRS990/DepreciationDepletionGrp/TotalAmt | 0 | 517453 |
| IRS990/Desc | 0 | ALZHEIMER'S DISEASE RESEARCH (ADR) - BRIGHTFOCUS' ADR PROGRAM FUNDS RESEARCH FOCUSED ON UNDERSTANDING ALZHEIMER'S DISEASE'S CAUSES, ITS EARLY DETECTION, AND TREATMENTS TO HELP SLOW OR STOP ITS PROGRESSION, AND ULTIMATELY TO PREVENT THE DISEASE ALTOGETHER. ADR ANNUALLY AWARDS PEER-REVIEWED GRANTS TO SCIENTISTS FROM INSTITUTIONS WORLDWIDE WHO ARE CONDUCTING BIOMEDICAL AND CLINICAL RESEARCH ON ALZHEIMER'S DISEASE. SINCE INCEPTION, BRIGHTFOCUS HAS CONTRIBUTED MORE THAN $118 MILLION TO THE CONQUERING OF ALZHEIMER'S DISEASE. DURING THE FISCAL YEAR ENDED MARCH 31, 2018, ADR FUNDED 39 NEW RESEARCH AWARDS TOTALING $9,117,024. |
| IRS990/DescribedInSection501c3Ind | 0 | 1 |
| IRS990/DisregardedEntityInd | 0 | 1 |
| IRS990/DocumentRetentionPolicyInd | 0 | 1 |
| IRS990/DonorAdvisedFundInd | 0 | 0 |
| IRS990/ElectionOfBoardMembersInd | 0 | 0 |
| IRS990/EmployeeCnt | 0 | 57 |
| IRS990/EmploymentTaxReturnsFiledInd | 0 | 1 |
| IRS990/EngagedInExcessBenefitTransInd | 0 | 0 |
| IRS990/ExpenseAmt | 0 | 17302136 |
| IRS990/FamilyOrBusinessRlnInd | 0 | 0 |
| IRS990/FederalGrantAuditRequiredInd | 0 | 0 |
| IRS990/FederatedCampaignsAmt | 0 | 175615 |
| IRS990/FeesForServicesAccountingGrp/FundraisingAmt | 0 | 23980 |
| IRS990/FeesForServicesAccountingGrp/ManagementAndGeneralAmt | 0 | 21685 |
| IRS990/FeesForServicesAccountingGrp/ProgramServicesAmt | 0 | 37995 |
| IRS990/FeesForServicesAccountingGrp/TotalAmt | 0 | 83660 |
| IRS990/FeesForServicesLegalGrp/ManagementAndGeneralAmt | 0 | 51471 |
| IRS990/FeesForServicesLegalGrp/ProgramServicesAmt | 0 | 69034 |
| IRS990/FeesForServicesLegalGrp/TotalAmt | 0 | 120505 |
| IRS990/FeesForServicesOtherGrp/FundraisingAmt | 0 | 72253 |
| IRS990/FeesForServicesOtherGrp/ManagementAndGeneralAmt | 0 | 130955 |
| IRS990/FeesForServicesOtherGrp/ProgramServicesAmt | 0 | 1042223 |
| IRS990/FeesForServicesOtherGrp/TotalAmt | 0 | 1245431 |
| IRS990/FeesForServicesProfFundraising/FundraisingAmt | 0 | 636451 |
| IRS990/FeesForServicesProfFundraising/TotalAmt | 0 | 636451 |
| IRS990/FeesForSrvcInvstMgmntFeesGrp/ManagementAndGeneralAmt | 0 | 254466 |
| IRS990/FeesForSrvcInvstMgmntFeesGrp/TotalAmt | 0 | 254466 |
| IRS990/ForeignActivitiesInd | 0 | 1 |
| IRS990/ForeignFinancialAccountInd | 0 | 0 |
| IRS990/ForeignGrantsGrp/ProgramServicesAmt | 0 | 1806017 |
| IRS990/ForeignGrantsGrp/TotalAmt | 0 | 1806017 |
| IRS990/ForeignOfficeInd | 0 | 0 |
| IRS990/Form8282PropertyDisposedOfInd | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 0 | 5.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 1 | 3.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 2 | 20.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 3 | 4.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 4 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 5 | 3.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 6 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 7 | 6.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 8 | 3.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 9 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 10 | 4.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 11 | 3.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 12 | 3.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 13 | 3.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 14 | 3.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 15 | 55.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 16 | 45.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 17 | 45.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 18 | 45.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 19 | 45.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 20 | 45.00 |
| IRS990/Form990PartVIISectionAGrp/HighestCompensatedEmployeeInd | 0 | 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/KeyEmployeeInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/KeyEmployeeInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/KeyEmployeeInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/KeyEmployeeInd | 3 | 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/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 | 77821 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 16 | 28959 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 17 | 38279 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 18 | 61854 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 19 | 25938 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 20 | 45334 |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 0 | SCOTT RODGVILLE CPA |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | DIANE I MARCELLO |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | NICHOLAS W RAYMOND |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | JUDITH F LEE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | CECILIA ARRADAZA |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | MICHAEL H BARNETT ESQ |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | MADDY DYCHTWALD |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | GRACE FRISONE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | JUNE KINOSHITA |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 9 | HENRY J POWNALL PHD |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 10 | BRIAN K REGAN PHD |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 11 | ELTJO ED R SCHOONVELD |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 12 | PATRICIA M STEWART |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 13 | JAN M STOUFFER PHD |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 14 | ETHAN TREESE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 15 | STACY PAGOS HALLER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 16 | NANCY LYNN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 17 | R BRIAN ELDERTON |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 18 | DAVID F MARKS CPA CMA |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 19 | DIANE BOVENKAMP PHD |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 20 | MICHAEL BUCKLEY |
| 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 | 395786 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 16 | 230312 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 17 | 223015 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 18 | 152620 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 19 | 152385 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 20 | 144280 |
| 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/ReportableCompFromRltdOrgAmt | 19 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 20 | 0 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 0 | CHAIR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | VICE CHAIR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | TREASURER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | SECRETARY |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 6 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 7 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 8 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 9 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 10 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 11 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 12 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 13 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 14 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 15 | PRESIDENT/CEO |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 16 | SR. VP STRATEGIC PARTNERSHIPS |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 17 | SR. VP, DEVELOPMENT |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 18 | VP, FINANCE & ADMINISTRATION |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 19 | VP, SCIENTIFIC AFFAIRS |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 20 | VP, PUBLIC AFFAIRS |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | 1 |
| IRS990/FormationYr | 0 | 1973 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | 0 |
| IRS990/FSAuditedBasisGrp/ConsolidatedBasisFinclStmtInd | 0 | X |
| IRS990/FSAuditedInd | 0 | 1 |
| IRS990/FundraisingActivitiesInd | 0 | 1 |
| IRS990/FundraisingAmt | 0 | 191321 |
| IRS990/FundraisingDirectExpensesAmt | 0 | 244795 |
| IRS990/FundraisingGrossIncomeAmt | 0 | 26200 |
| IRS990/GainOrLossGrp/SecuritiesAmt | 0 | 1186607 |
| IRS990/GamingActivitiesInd | 0 | 0 |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 15 |
| IRS990/GrantAmt | 0 | 9257024 |
| IRS990/GrantsPayableGrp/BOYAmt | 0 | 17420470 |
| IRS990/GrantsPayableGrp/EOYAmt | 0 | 18854761 |
| IRS990/GrantsToDomesticOrgsGrp/ProgramServicesAmt | 0 | 11669727 |
| IRS990/GrantsToDomesticOrgsGrp/TotalAmt | 0 | 11669727 |
| IRS990/GrantsToIndividualsInd | 0 | 0 |
| IRS990/GrantsToOrganizationsInd | 0 | 1 |
| IRS990/GrantToRelatedPersonInd | 0 | 0 |
| IRS990/GrossAmountSalesAssetsGrp/SecuritiesAmt | 0 | 13430888 |
| IRS990/GrossReceiptsAmt | 0 | 47461052 |
| IRS990/GrossRentsGrp/RealAmt | 0 | 635730 |
| IRS990/GroupReturnForAffiliatesInd | 0 | 0 |
| IRS990/IncludeFIN48FootnoteInd | 0 | 1 |
| IRS990/IndependentAuditFinclStmtInd | 0 | 0 |
| IRS990/IndependentVotingMemberCnt | 0 | 15 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 6 |
| IRS990/IndoorTanningServicesInd | 0 | 0 |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InfoInScheduleOPartXIInd | 0 | X |
| IRS990/InformationTechnologyGrp/FundraisingAmt | 0 | 76566 |
| IRS990/InformationTechnologyGrp/ManagementAndGeneralAmt | 0 | 142641 |
| IRS990/InformationTechnologyGrp/ProgramServicesAmt | 0 | 454498 |
| IRS990/InformationTechnologyGrp/TotalAmt | 0 | 673705 |
| IRS990/InsuranceGrp/FundraisingAmt | 0 | 7679 |
| IRS990/InsuranceGrp/ManagementAndGeneralAmt | 0 | 56101 |
| IRS990/InsuranceGrp/ProgramServicesAmt | 0 | 32256 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 96036 |
| IRS990/InterestGrp/FundraisingAmt | 0 | 1186 |
| IRS990/InterestGrp/ManagementAndGeneralAmt | 0 | 3683 |
| IRS990/InterestGrp/ProgramServicesAmt | 0 | 6691 |
| IRS990/InterestGrp/TotalAmt | 0 | 11560 |
| IRS990/InventoriesForSaleOrUseGrp/BOYAmt | 0 | 39584 |
| IRS990/InventoriesForSaleOrUseGrp/EOYAmt | 0 | 43224 |
| IRS990/InvestmentIncomeGrp/ExclusionAmt | 0 | 667662 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 667662 |
| IRS990/InvestmentInJointVentureInd | 0 | 0 |
| IRS990/InvestmentsOtherSecuritiesGrp/BOYAmt | 0 | 4593490 |
| IRS990/InvestmentsOtherSecuritiesGrp/EOYAmt | 0 | 4854970 |
| IRS990/InvestmentsPubTradedSecGrp/BOYAmt | 0 | 29268444 |
| IRS990/InvestmentsPubTradedSecGrp/EOYAmt | 0 | 31354433 |
| IRS990/IRPDocumentCnt | 0 | 172 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/JointCostsInd | 0 | X |
| IRS990/LandBldgEquipAccumDeprecAmt | 0 | 3991974 |
| IRS990/LandBldgEquipBasisNetGrp/BOYAmt | 0 | 8398877 |
| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 7992593 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 11984567 |
| IRS990/LegalDomicileStateCd | 0 | DC |
| IRS990/LessCostOthBasisSalesExpnssGrp/SecuritiesAmt | 0 | 12244281 |
| IRS990/LessRentalExpensesGrp/RealAmt | 0 | 67471 |
| IRS990/LoanOutstandingInd | 0 | 0 |
| IRS990/LobbyingActivitiesInd | 0 | 1 |
| 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 | BRIGHTFOCUS FOUNDATION (BRIGHTFOCUS) DRIVES INNOVATIVE RESEARCH WORLDWIDE AND PROMOTES AWARENESS OF ALZHEIMER'S, MACULAR DEGENERATION AND GLAUCOMA. PLEASE REFER TO SCHEDULE O FOR A COMPLETE OVERVIEW OF OUR MISSION. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | 0 |
| IRS990/MoreThan5000KToOrgInd | 0 | 1 |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 31695335 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 31868492 |
| IRS990/NetGainOrLossInvestmentsGrp/ExclusionAmt | 0 | 1186607 |
| IRS990/NetGainOrLossInvestmentsGrp/TotalRevenueColumnAmt | 0 | 1186607 |
| IRS990/NetIncmFromFundraisingEvtGrp/ExclusionAmt | 0 | -218595 |
| IRS990/NetIncmFromFundraisingEvtGrp/TotalRevenueColumnAmt | 0 | -218595 |
| IRS990/NetRentalIncomeOrLossGrp/ExclusionAmt | 0 | 568259 |
| IRS990/NetRentalIncomeOrLossGrp/TotalRevenueColumnAmt | 0 | 568259 |
| IRS990/NetUnrelatedBusTxblIncmAmt | 0 | 0 |
| IRS990/NetUnrlzdGainsLossesInvstAmt | 0 | 599410 |
| IRS990/NoncashContributionsAmt | 0 | 180229 |
| IRS990/NondeductibleContributionsInd | 0 | 0 |
| IRS990/OccupancyGrp/FundraisingAmt | 0 | 34380 |
| IRS990/OccupancyGrp/ManagementAndGeneralAmt | 0 | 106760 |
| IRS990/OccupancyGrp/ProgramServicesAmt | 0 | 193985 |
| IRS990/OccupancyGrp/TotalAmt | 0 | 335125 |
| IRS990/OfficeExpensesGrp/FundraisingAmt | 0 | 229389 |
| IRS990/OfficeExpensesGrp/ManagementAndGeneralAmt | 0 | 228659 |
| IRS990/OfficeExpensesGrp/ProgramServicesAmt | 0 | 391563 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 849611 |
| IRS990/OfficerMailingAddressInd | 0 | 0 |
| IRS990/OperateHospitalInd | 0 | 0 |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsSFAS117Ind | 0 | X |
| IRS990/OtherAssetsTotalGrp/BOYAmt | 0 | 546333 |
| IRS990/OtherAssetsTotalGrp/EOYAmt | 0 | 514514 |
| IRS990/OtherChangesInNetAssetsAmt | 0 | 484733 |
| IRS990/OtherEmployeeBenefitsGrp/FundraisingAmt | 0 | 65597 |
| IRS990/OtherEmployeeBenefitsGrp/ManagementAndGeneralAmt | 0 | 152004 |
| IRS990/OtherEmployeeBenefitsGrp/ProgramServicesAmt | 0 | 269016 |
| IRS990/OtherEmployeeBenefitsGrp/TotalAmt | 0 | 486617 |
| IRS990/OtherExpensesGrp/Desc | 0 | PUB. AWARENESS POSTAGE |
| IRS990/OtherExpensesGrp/Desc | 1 | PUB. AWARENESS PRINTING |
| IRS990/OtherExpensesGrp/Desc | 2 | PUB. AWARENESS COMP. |
| IRS990/OtherExpensesGrp/Desc | 3 | LIST RENTAL |
| IRS990/OtherExpensesGrp/FundraisingAmt | 0 | 2336024 |
| IRS990/OtherExpensesGrp/FundraisingAmt | 1 | 1485358 |
| IRS990/OtherExpensesGrp/FundraisingAmt | 2 | 748909 |
| IRS990/OtherExpensesGrp/FundraisingAmt | 3 | 554934 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 0 | 427395 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 1 | 258494 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 2 | 109608 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 3 | 78355 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 0 | 2806267 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 1 | 1776998 |