Liabilities / Assets
2nd percentile
Tied with the lowest-debt nonprofits in its peer group.
EIN 22-3195349 • 501(c)3 • Boston, MA
Profile
Making grants and conducting supporting activities exclusively for the benefit of, to perform one or more of the functions of, or to carry out one or more of the purposes of, supported organizations described in section 501(c)(3) (continued on schedule o)and 509(a)(1) or (2) of the code that conduct activities in arts and culture, education, or medical research and healthcare, with emphasis on encouraging the highest standards of non-profit management.
Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.
Liabilities / Assets
2nd percentile
Tied with the lowest-debt nonprofits in its peer group.
Liabilities / Revenue
2nd percentile
Tied with the lowest-debt nonprofits in its peer group.
Net Margin
90th percentile
Higher net margin than 90% of similar nonprofits.
Top Officer Pay
13th percentile
Higher top officer pay than 13% of similar nonprofits.
Top officer pay equals 0.2% of source-year revenue.
Asset Growth
34th percentile
Faster asset growth than 34% of similar nonprofits.
Revenue Growth
8th percentile
Faster revenue growth than 8% of similar nonprofits.
Assets
Up$2,566,528,357
Up $117,203,948 (+4.8%) from 2023
Liabilities
Flat$0
Flat from 2023
Net Assets
Up$2,566,528,357
Up $117,203,948 (+4.8%) from 2023
Revenue
Down$258,852,289
Down $20,766,331 (-7.4%) from 2023
Expenses
Up$141,749,569
Up $38,757,554 (+38%) from 2023
Net Income
Down$117,102,720
Down $59,523,885 (-34%) from 2023
Most recent year
2024 • Form 990Detailed filing. Detailed filing data is available for this year.
Making grants and conducting supporting activities exclusively for the benefit of, to perform one or more of the functions of, or to carry out one or more of the purposes of, supported organizations described in section 501(c)(3) and 509(a)(1) or (2) of the code that conduct activities in arts and culture, education, or medical research and healthcare, with emphasis on encouraging the highest standards of non-profit management.
SEE PART III LINE 1
| Line | Beginning | End | Change |
|---|---|---|---|
| Assets | |||
| Investments in Publicly Traded Securities | $2,204,698,508 | $2,383,487,979 | ▲ $178,789,471 |
| Investments Other Securities | $133,551,656 | $133,551,655 | ▼ $1 |
| Savings and Temporary Cash Investments | $109,339,120 | $48,076,783 | ▼ $61,262,337 |
| Prepaid Expenses and Deferred Charges | $1,735,125 | $1,411,940 | ▼ $323,185 |
| Total Assets | $2,449,324,409 | $2,566,528,357 | ▲ $117,203,948 |
| Liabilities | |||
| Total Liabilities | $0 | $0 | → $0 |
| Net Assets / Fund Balance | |||
| Net Assets Without Donor Restrictions | $2,449,324,409 | $2,566,528,357 | ▲ $117,203,948 |
| Total Net Assets Fund Balance | $2,449,324,409 | $2,566,528,357 | ▲ $117,203,948 |
| Total Liabilities and Net Assets / Fund Balance | $2,449,324,409 | $2,566,528,357 | ▲ $117,203,948 |
| Asset | Book Value | Depreciation | Basis |
|---|---|---|---|
| Other Securities | $714,707 | - | - |
| Name | Title | Full / Part Time | Base | Other | Total |
|---|---|---|---|---|---|
| Maura Marx | President | PT | $208,149 | $382,598 | $590,747 |
| Lara Bethke | Program Director, Medical Science | FT | $328,417 | $44,548 | $372,965 |
| Caroline Nolan | Program Director, Education | PT | $209,845 | $101,997 | $311,842 |
| Lisa Bevilaqua | Program Director, Arts & Culture | PT | $204,460 | $85,793 | $290,253 |
| Barbara Sullivan | VP, Insights & Impact | PT | $142,701 | $136,027 | $278,728 |
| Natacha Perrotta | VP, Programs | PT | $136,767 | $131,869 | $268,636 |
| Lydia Bergen | VP, Operations | PT | $138,642 | $126,350 | $264,992 |
| Daniel M Ardito | Treasurer | PT | $98,092 | $120,391 | $218,483 |
| Kevin Saunders | Asst Secretary | PT | $130,542 | $70,656 | $201,198 |
| John Palfrey | Director | - | $25,000 | $20,000 | $45,000 |
| Robert a Radloff | Director & VP | - | $25,000 | - | $25,000 |
| Susan Hockfield | Director | - | $25,000 | $465,373 | $25,000 |
| Name | Title |
|---|---|
| Edward C Johnson Iv | Director & Chairman |
| Elizabeth L Johnson | Director |
| Christopher J Mckown | Secretary |
| Line Item | Amount |
|---|---|
| Grants and Similar Amounts Paid | $135,199,000 |
| Salaries, Compensation, and Employee Benefits | $5,616,000 |
| Other Expenses | $934,569 |
| Professional Fundraising Fees | $0 |
| Total Fundraising Expense | $0 |
| Line Item | Program | Management | Fundraising | Total |
|---|---|---|---|---|
| Grants to Domestic Orgs | $135,199,000 | - | - | $135,199,000 |
| Other Salaries and Wages | $2,829,267 | - | - | $2,829,267 |
| Current Officers, Directors, Trustees, and Key Employees | $1,350,420 | - | - | $1,350,420 |
| Payroll Taxes | $709,847 | - | - | $709,847 |
| Pension Plan Contributions | $464,182 | - | - | $464,182 |
| Other Employee Benefits | $262,284 | - | - | $262,284 |
| Fees for Services Other | $233,018 | - | - | $233,018 |
| Travel | $147,945 | - | - | $147,945 |
| Information Technology | - | $142,345 | - | $142,345 |
| Fees for Services Legal | - | $57,280 | - | $57,280 |
| Fees for Services Accounting | - | $41,362 | - | $41,362 |
| Office Expenses | - | $23,500 | - | $23,500 |
| Insurance | - | $16,463 | - | $16,463 |
| Other Expenses | - | $1,037 | - | $1,037 |
| Total Functional Expenses | $141,195,963 | $553,606 | $0 | $141,749,569 |
| Line Item | Amount |
|---|---|
| Total Expenses per Audited Statements | $175,473,634 |
| Expenses per Audited Statements | $141,749,569 |
| Total Expenses per Form 990 | $141,749,569 |
| Expenses Not Reported on Form 990 | $33,724,065 |
| Expenses Not Reported on Financial Statements | $0 |
| Recipient | Location | Category | Purpose | Amount |
|---|---|---|---|---|
| Massachusetts General Hospital | Boston, MA | 501(c)(3) | New Construction | $25,000,000 |
| Boston Symphony Orchestra Inc | Boston, MA | 501(c)(3) | Renovation | $5,000,000 |
| Museum of Modern Art | New York, NY | 501(c)(3) | Endowment | $5,000,000 |
| Worcester Art Museum | Worcester, MA | 501(c)(3) | PROPERTY CARE; BUILDINGS; RENOVATION | $5,000,000 |
| Historic New England | Haverhill, MA | 501(c)(3) | Campaign/fundraising Plan | $4,000,000 |
| Massachusetts Museum of Contemporary Art Foundation | North Adams, MA | 501(c)(3) | Renovation | $3,000,000 |
| New England Historic Genealogical Society Inc | Boston, MA | 501(c)(3) | PROPERTY CARE; BUILDINGS; RENOVATION | $3,000,000 |
| Yale University | New Haven, CT | 501(c)(3) | Endowment | $3,000,000 |
| Henry E Huntington Library & Art Gallery | San Marino, CA | 501(c)(3) | PROPERTY CARE; BUILDINGS; CONSTRUCTION | $2,500,000 |
| North Bennet Street School | Boston, MA | 501(c)(3) | PROPERTY CARE; BUILDINGS; RENOVATION | $2,500,000 |
| Per Scholas Inc | Bronx, NY | 501(c)(3) | Crm | $2,500,000 |
| Sterling and Francine Clark Art Institute | Williamstown, MA | 501(c)(3) | Endowment | $2,500,000 |
| Theodore Roosevelt Presidential Library Foundation | Bismarck, ND | 501(c)(3) | New Construction | $2,500,000 |
| Institute of Contemporary Art | Boston, MA | 501(c)(3) | Endowment | $2,000,000 |
| Massachusetts Institute of Technology | Cambridge, MA | 501(c)(3) | Program Development/evaluation | $2,000,000 |
| New England Conservatory of Music | Boston, MA | 501(c)(3) | PROPERTY CARE; BUILDINGS; CONSTRUCTION | $2,000,000 |
| The Posse Foundation Inc | New York, NY | 501(c)(3) | Endowment | $2,000,000 |
| Year Up United | Boston, MA | 501(c)(3) | Technology & Equipment | $2,000,000 |
| Braven Inc | Chicago, IL | 501(c)(3) | Program Expansion | $1,600,000 |
| Bellforge Arts Center | Medfield, MA | 501(c)(3) | PROPERTY CARE; BUILDINGS; RENOVATION | $1,500,000 |
| Boch Center | Boston, MA | 501(c)(3) | Technology & Equipment | $1,500,000 |
| Concord Museum | Concord, MA | 501(c)(3) | Endowment | $1,500,000 |
| Huntington Theatre Company Inc | Boston, MA | 501(c)(3) | Endowment | $1,500,000 |
| Massachusetts Historical Society | Boston, MA | 501(c)(3) | Endowment | $1,500,000 |
| Social Finance Inc | Boston, MA | 501(c)(3) | Campaign/fundraising Plan | $1,500,000 |
| The Shed | New York, NY | 501(c)(3) | General Operating/annual Support | $1,500,000 |
| CHILDREN'S HOSPITAL BOSTON | Boston, MA | 501(c)(3) | Discovery Research (science) | $1,385,000 |
| Georgia State University Foundation Inc | Atlanta, GA | 501(c)(3) | Program Expansion | $1,375,000 |
| University of Massachusetts Foundation Inc | Newton, MA | 501(c)(3) | Program Expansion | $1,245,000 |
| Brightfocus Foundation | Clarksburg, MD | 501(c)(3) | Discovery Research (science) | $1,200,000 |
| Boston Ballet Inc | Boston, MA | 501(c)(3) | Endowment | $1,000,000 |
| Braven Inc | Chicago, IL | 501(c)(3) | Program Expansion | $1,000,000 |
| Cape Ann Museum Inc | Gloucester, MA | 501(c)(3) | PROPERTY CARE; BUILDINGS; RENOVATION | $1,000,000 |
| Digital Harbor Foundation Inc | Baltimore, MD | 501(c)(3) | Other Program Dev Project (please Specify) | $1,000,000 |
| Harvard Medical School | Boston, MA | 501(c)(3) | Discovery Research (science) | $1,000,000 |
| Jobs for the Future Inc | Boston, MA | 501(c)(3) | R&d/innovation/pilots | $1,000,000 |
| Merit America | Washington, DC | 501(c)(3) | Program Development/evaluation | $1,000,000 |
| Resilient Coders Inc | San Francisco, CA | 501(c)(3) | Strategic Plan | $1,000,000 |
| Naf | New York, NY | 501(c)(3) | Technology & Equipment | $930,000 |
| Big Picture Company Inc | Providence, RI | 501(c)(3) | Technology & Equipment | $920,000 |
| Npower Inc | Brooklyn, NY | 501(c)(3) | Program Development/evaluation | $900,000 |
| Onegoal | Chicago, IL | 501(c)(3) | Technology Plan | $900,000 |
| Trustees of Boston University | Boston, MA | 501(c)(3) | R&d/innovation/pilots | $880,000 |
| Mentor the National Mentoring Partnership Inc | Boston, MA | 501(c)(3) | Technology & Equipment | $860,000 |
| Opportunity at Work Inc | Washington, DC | 501(c)(3) | Technology Plan | $850,000 |
| University of Massachusetts Foundation Inc | Newton, MA | 501(c)(3) | Evaluation | $820,000 |
| The Association for Frontotemporal Degeneration | King of Prussia, PA | 501(c)(3) | Discovery Research (science) | $800,000 |
| Alzheimers Disease Data Initiative Inc | Kirkland, WA | 501(c)(3) | R&d/innovation/pilots | $750,000 |
| American Antiquarian Society | Worcester, MA | 501(c)(3) | PROPERTY CARE; BUILDINGS; CONSTRUCTION | $750,000 |
| Harvard University | Cambridge, MA | 501(c)(3) | Endowment | $750,000 |
| Institute for Nonprofit Practice Inc | Boston, MA | 501(c)(3) | Program Development/evaluation | $750,000 |
| Uaspire Inc | Boston, MA | 501(c)(3) | Technology Plan | $750,000 |
| Whitney Museum of American Art | New York, NY | 501(c)(3) | Strategic Plan | $750,000 |
| Quincy College Trust | Quincy, MA | 501(c)(3) | Construction | $700,000 |
| Youthbuild USA Inc | Roxbury, MA | 501(c)(3) | Program Development/evaluation | $700,000 |
| American Academy of Arts and Sciences | Cambridge, MA | 501(c)(3) | Program Development/evaluation | $600,000 |
| Beyond 12 Education Inc | Oakland, CA | 501(c)(3) | Program Development/evaluation | $600,000 |
| Breakthrough Collaborative | Oakland, CA | 501(c)(3) | Technology & Equipment | $600,000 |
| Summer Search | Oakland, CA | 501(c)(3) | Program Pilot | $600,000 |
| Thurgood Marshall College Fund Inc | Washington, DC | 501(c)(3) | Technology & Equipment | $600,000 |
| Assabet Valley Regional Vocational School District | Marlborough, MA | 509(a)(1) | Specialized Equipment | $580,000 |
| National Education Equity Lab Inc | New York, NY | 501(c)(3) | Technology & Equipment | $580,000 |
| Blackstone Valley Vocational Regional School District | Upton, MA | 509(a)(1) | Specialized Equipment | $550,000 |
| Cristo Rey Network | Chicago, IL | 501(c)(3) | Program Development/evaluation | $550,000 |
| Cape Ann Museum Inc | Gloucester, MA | 501(c)(3) | PROPERTY CARE; BUILDINGS; RENOVATION | $500,000 |
| Cybertrust Massachusetts | Waltham, MA | 501(c)(3) | Program Pilot | $500,000 |
| Duet Inc | Boston, MA | 501(c)(3) | Technology & Equipment | $500,000 |
| Hispanic Scholarship Fund | Gardena, CA | 501(c)(3) | Strategic Plan | $500,000 |
| Imentor | New York, NY | 501(c)(3) | Technology & Equipment | $500,000 |
| Lewy Body Dementia Association Inc | Lilburn, GA | 501(c)(3) | Discovery Research (science) | $500,000 |
| Massachusetts General Hospital | Boston, MA | 501(c)(3) | Program Development/evaluation | $500,000 |
| Tech Goes Home | Boston, MA | 501(c)(3) | Program Development/evaluation | $500,000 |
| The Burning Glass Institute | Bala Cynwyd, PA | 501(c)(3) | R&d/innovation/pilots | $500,000 |
| The Norman Rockwell Museum at Stockbridge Inc | Stockbridge, MA | 501(c)(3) | Technology & Equipment | $500,000 |
| Thrive Scholars | Boston, MA | 501(c)(3) | Technology Plan | $500,000 |
| Year Up United | Boston, MA | 501(c)(3) | Program Pilot | $500,000 |
| Code2040 | San Francisco, CA | 501(c)(3) | Program Development/evaluation | $475,000 |
| Scholarship America Inc | Minneapolis, MN | 501(c)(3) | Technology & Equipment | $470,000 |
| Bristol-plymouth Regional Technical School District | Taunton, MA | 509(a)(1) | Specialized Equipment | $450,000 |
| Springfield Public Schools | Springfield, MA | 509(a)(1) | Specialized Equipment | $450,000 |
| Montachusett Regional Vocational Technical School District | Fitchburg, MA | 509(a)(1) | Specialized Equipment | $440,000 |
| Wtia Workforce Institute | Issaquah, WA | 501(c)(3) | Program Development/evaluation | $400,000 |
| Youthbuild Boston Inc | Roxbury, MA | 501(c)(3) | Program Development/evaluation | $400,000 |
| Babson College | Wellesley, MA | 501(c)(3) | Program Pilot | $395,000 |
| Northeast Advanced Manufacturing Consortium | Somerville, MA | 501(c)(3) | Program Development/evaluation | $370,000 |
| Massachusetts College of Pharmacy and Health Sciences | Boston, MA | 501(c)(3) | Program Pilot | $330,000 |
| University of Massachusetts Foundation Inc | Newton, MA | 501(c)(3) | Technology & Equipment | $330,000 |
| Worcester State Foundation | Worcester, MA | 501(c)(3) | Technology & Equipment | $330,000 |
| National Scholarship Providers Association | Charlottesville, VA | 501(c)(3) | Technology & Equipment | $300,000 |
| Resilient Coders Inc | Cambridge, MA | 501(c)(3) | Technology & Equipment | $300,000 |
| Tufts University | Medford, MA | 501(c)(3) | Endowment | $300,000 |
| University of Massachusetts Foundation Inc | Newton, MA | 501(c)(3) | R&d/innovation/pilots | $290,000 |
| Worcester Polytechnic Institute | Worcester, MA | 501(c)(3) | Technology Plan | $275,000 |
| Building Mass Careers | Woburn, MA | 501(c)(3) | Equipment | $250,000 |
| Cape Cod Tech Foundation Inc | Harwich, MA | 501(c)(3) | Specialized Equipment | $250,000 |
| Davos Alzheimers Collaborative | Wayne, PA | 501(c)(3) | R&d/innovation/pilots | $250,000 |
| Hackdiversity | Boston, MA | 501(c)(3) | Program Development/evaluation | $250,000 |
| Massachusetts Biotechnology Education Foundation Inc | Cambridge, MA | 501(c)(3) | Technology Plan | $250,000 |
| Cape Cod Tech Foundation Inc | Harwich, MA | 501(c)(3) | Specialized Equipment | $240,000 |
| Biobuilder | Newton, MA | 501(c)(3) | Specialized Equipment | $235,000 |
| National College Attainment Network | Washington, DC | 501(c)(3) | Technology & Equipment | $230,000 |
| Association for Career and Technical Education Inc | Alexandria, VA | 501(c)(3) | Program Development/evaluation | $200,000 |
| Blue Hills Regional Vocational Technical | Canton, MA | 509(a)(1) | Specialized Equipment | $200,000 |
| Propel America | Boston, MA | 501(c)(3) | Strategic Plan | $200,000 |
| The Bridgewater State University Foundation | Bridgewater, MA | 501(c)(3) | Program Expansion | $200,000 |
| Building Pathways | Roxbury, MA | 501(c)(3) | Equipment | $150,000 |
| Epiphany School Inc | Dorchester, MA | 501(c)(3) | Salary Support | $89,000 |
| The Paul Revere Memorial Association | Boston, MA | 501(c)(3) | General Operating/annual Support | $75,000 |
| Line Item | Amount |
|---|---|
| Professional Fundraising Fees | $0 |
“Edward c johnson iv, christopher j mckown, elizabeth l johnson - family relationship”
“The foundation engages ffsp llc in a cost sharing arrangement to provide staff, administrative and program management support. In addition, certain services were provided to the foundation under an administrative services contract by fmr llc, which is a substantial contributor to the foundation. Fmr llc provided these services to the foundation at no charge.”
“The members of the organization elect members of the board of trustees periodically and/or when vacancies arise.”
“The trustees are elected by vote periodically and/or when vacancies arise, by the members of the organization.”
“A copy of the form 990 is provided to each of the members of the governing body. The entire form 990 is reviewed by the members of the audit committee. Officers of the organization as well as the paid preparer review the form 990 with the members of the audit committee before the return is filed.”
“Officers, directors and trustees sign an annual statement attesting that they are in compliance with the organization's written conflict of interest policy and disclose relevant financial interests and affiliations with potential grantees. In instances where the board determines the existence of a conflict, participation in the board's deliberations and decisions is limited to disinterested trustees.”
“The foundation engages ffsp llc in a cost sharing arrangement to provide staff, administrative and program management support. Ffsp entered into written compensation agreements with all of its employees on the date of hire. The compensation in the agreements were all based on third-party comparability data compiled and updated in 2024. In 2024, the ffsp compensation committee relied on the same comparability data when making year end salary adjustments, determining year-end bonuses, and awarding long-term compensation for 2024. As a result, the process for determining the compensation of the president, treasurer and assistant secretary included the following: (1) prior to entering into such arrangements, appropriate comparability data was obtained and used, and such arrangement was then reviewed and approved by the appropriate compensation committee, of which only independent persons voted; and (2) minutes for compensation committee meetings were prepared, providing contemporaneous substantiation of the deliberation and decision by noting the terms of the arrangement and date it was approved, the committee members who were present and those who voted on it, and the comparability data obtained and relied upon by the committee.”
“Governing documents and financial statements are available to the general public on file with the office of the massachusetts attorney general.”
“Accrual to cash adjustment 101,228.”
“The organization has a committee that is responsible under its governing documents for (i) overseeing the compilation, review, or audit of the financial statements; and (ii) the selection of an independent accountant that compiled, reviewed, or audited the statements. This process has not changed from the` prior year.”
“A tax qualification determination letter has been received from the internal revenue service indicating that the foundation is exempt from federal income taxes under section 501(c)(3) and as a supporting organization described in section 509(a)(3) of the code. The foundation recognizes a tax benefit or charge from an uncertain position when it is more likely than not that the position would be sustained upon examination. As of december 31, 2024, the foundation had no uncertain tax positions that would require financial statement recognition, derecognition, or disclosure.”
“Accrual to cash adjustment -9,931.”
“Accrual to cash adjustment 33,724,065.”
This appendix keeps the raw XML leaves available for debugging and edge-case review. The human report above is the primary experience.
| Path | # | Value |
|---|---|---|
| IRS990/AccountantCompileOrReviewInd | 0 | 0 |
| IRS990/ActivitiesConductedPrtshpInd | 0 | 0 |
| IRS990/ActivityOrMissionDesc | 0 | SEE PART III LINE 1 |
| IRS990/AllOtherContributionsAmt | 0 | 22641202 |
| IRS990/AnnualDisclosureCoveredPrsnInd | 0 | 1 |
| IRS990/AuditCommitteeInd | 0 | 1 |
| IRS990/BackupWthldComplianceInd | 0 | 1 |
| IRS990/BooksInCareOfDetail/BusinessName/BusinessNameLine1Txt | 0 | DANIEL M ARDITO |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 6036814291 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 11 KEEWAYDIN DRIVE SUITE 100 |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | SALEM |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | NH |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 03079 |
| IRS990/BusinessRlnWith35CtrlEntInd | 0 | 0 |
| IRS990/BusinessRlnWithFamMemInd | 0 | 0 |
| IRS990/BusinessRlnWithOrgMemInd | 0 | 0 |
| IRS990/ChangeToOrgDocumentsInd | 0 | 0 |
| IRS990/CntrctRcvdGreaterThan100KCnt | 0 | 0 |
| IRS990/CollectionsOfArtInd | 0 | 0 |
| IRS990/CompCurrentOfcrDirectorsGrp/ProgramServicesAmt | 0 | 1350420 |
| IRS990/CompCurrentOfcrDirectorsGrp/TotalAmt | 0 | 1350420 |
| IRS990/CompensationFromOtherSrcsInd | 0 | 0 |
| IRS990/CompensationProcessCEOInd | 0 | 1 |
| IRS990/CompensationProcessOtherInd | 0 | 1 |
| IRS990/ConflictOfInterestPolicyInd | 0 | 1 |
| IRS990/ConservationEasementsInd | 0 | 0 |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | 0 |
| IRS990/CreditCounselingInd | 0 | 0 |
| IRS990/CYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/CYContributionsGrantsAmt | 0 | 22641202 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 135199000 |
| IRS990/CYInvestmentIncomeAmt | 0 | 236211087 |
| IRS990/CYOtherExpensesAmt | 0 | 934569 |
| IRS990/CYOtherRevenueAmt | 0 | 0 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 0 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | 117102720 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 5616000 |
| IRS990/CYTotalExpensesAmt | 0 | 141749569 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 0 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 258852289 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | 0 |
| IRS990/DeductibleArtContributionInd | 0 | 0 |
| IRS990/DeductibleNonCashContriInd | 0 | 0 |
| IRS990/DelegationOfMgmtDutiesInd | 0 | 1 |
| IRS990/Desc | 0 | GRANT MAKING TO SUPPORT ARTS AND CULTURE, EDUCATION, MEDICAL RESEARCH AND HEALTHCARE, WITH EMPHASIS ON ENCOURAGING THE HIGHEST STANDARDS OF NON-PROFIT MANAGEMENT. |
| IRS990/DescribedInSection501c3Ind | 0 | 1 |
| IRS990/DisregardedEntityInd | 0 | 0 |
| IRS990/DocumentRetentionPolicyInd | 0 | 1 |
| IRS990/DonorAdvisedFundInd | 0 | 0 |
| IRS990/DonorRstrOrQuasiEndowmentsInd | 0 | 0 |
| IRS990/ElectionOfBoardMembersInd | 0 | 1 |
| IRS990/EmployeeCnt | 0 | 0 |
| IRS990/EngagedInExcessBenefitTransInd | 0 | 0 |
| IRS990/ExpenseAmt | 0 | 141195963 |
| IRS990/FamilyOrBusinessRlnInd | 0 | 1 |
| IRS990/FederalGrantAuditRequiredInd | 0 | 0 |
| IRS990/FeesForServicesAccountingGrp/ManagementAndGeneralAmt | 0 | 41362 |
| IRS990/FeesForServicesAccountingGrp/TotalAmt | 0 | 41362 |
| IRS990/FeesForServicesLegalGrp/ManagementAndGeneralAmt | 0 | 57280 |
| IRS990/FeesForServicesLegalGrp/TotalAmt | 0 | 57280 |
| IRS990/FeesForServicesOtherGrp/ProgramServicesAmt | 0 | 233018 |
| IRS990/FeesForServicesOtherGrp/TotalAmt | 0 | 233018 |
| IRS990/ForeignActivitiesInd | 0 | 0 |
| IRS990/ForeignFinancialAccountInd | 0 | 0 |
| IRS990/ForeignOfficeInd | 0 | 0 |
| IRS990/Form8282PropertyDisposedOfInd | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 0 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 1 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 2 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 3 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 4 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 5 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 6 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 7 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 8 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 9 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 10 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 11 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 12 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 13 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 14 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 0 | 2.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 1 | 2.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 2 | 2.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 3 | 2.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 4 | 2.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 5 | 2.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 6 | 21.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 7 | 17.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 8 | 16.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 9 | 21.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 10 | 32.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 11 | 37.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 12 | 21.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 13 | 30.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 14 | 22.00 |
| IRS990/Form990PartVIISectionAGrp/HighestCompensatedEmployeeInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/HighestCompensatedEmployeeInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/HighestCompensatedEmployeeInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/HighestCompensatedEmployeeInd | 3 | X |
| IRS990/Form990PartVIISectionAGrp/HighestCompensatedEmployeeInd | 4 | 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/KeyEmployeeInd | 0 | 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/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 | 32333 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 7 | 35381 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 8 | 33559 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 9 | 33383 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 10 | 53997 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 11 | 2923 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 12 | 10573 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 13 | 44543 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 14 | 33958 |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 0 | SUSAN HOCKFIELD |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | JOHN PALFREY |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | ROBERT A RADLOFF |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | EDWARD C JOHNSON IV |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | ELIZABETH L JOHNSON |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | CHRISTOPHER J MCKOWN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | MAURA MARX |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | KEVIN SAUNDERS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | DANIEL M ARDITO |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 9 | LYDIA BERGEN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 10 | CAROLINE NOLAN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 11 | LARA BETHKE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 12 | NATACHA PERROTTA |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 13 | LISA BEVILAQUA |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 14 | BARBARA SULLIVAN |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 0 | 25000 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 1 | 25000 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 2 | 25000 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 6 | 558414 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 7 | 165817 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 8 | 184924 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 9 | 231609 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 10 | 257845 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 11 | 370042 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 12 | 258063 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 13 | 245710 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 14 | 244770 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 0 | 465373 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 1 | 20000 |
| 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/TitleTxt | 0 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | DIRECTOR & VP |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | DIRECTOR & CHAIRMAN |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | SECRETARY |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 6 | PRESIDENT |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 7 | ASST SECRETARY |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 8 | TREASURER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 9 | VP, OPERATIONS |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 10 | PROGRAM DIRECTOR, EDUCATION |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 11 | PROGRAM DIRECTOR, MEDICAL SCIENCE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 12 | VP, PROGRAMS |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 13 | PROGRAM DIRECTOR, ARTS & CULTURE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 14 | VP, INSIGHTS & IMPACT |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | 1 |
| IRS990/FormationYr | 0 | 1992 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | 0 |
| IRS990/FSAuditedBasisGrp/SeparateBasisFinclStmtInd | 0 | X |
| IRS990/FSAuditedInd | 0 | 1 |
| IRS990/FundraisingActivitiesInd | 0 | 0 |
| IRS990/GainOrLossGrp/SecuritiesAmt | 0 | 172720104 |
| IRS990/GamingActivitiesInd | 0 | 0 |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 5 |
| IRS990/GrantAmt | 0 | 135199000 |
| IRS990/GrantsToDomesticOrgsGrp/ProgramServicesAmt | 0 | 135199000 |
| IRS990/GrantsToDomesticOrgsGrp/TotalAmt | 0 | 135199000 |
| IRS990/GrantsToIndividualsInd | 0 | 0 |
| IRS990/GrantsToOrganizationsInd | 0 | 1 |
| IRS990/GrantToRelatedPersonInd | 0 | 0 |
| IRS990/GrossAmountSalesAssetsGrp/SecuritiesAmt | 0 | 943373859 |
| IRS990/GrossReceiptsAmt | 0 | 1029506044 |
| IRS990/GroupReturnForAffiliatesInd | 0 | 0 |
| IRS990/IncludeFIN48FootnoteInd | 0 | 1 |
| IRS990/IndependentAuditFinclStmtInd | 0 | 1 |
| IRS990/IndependentVotingMemberCnt | 0 | 3 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 17 |
| IRS990/IndoorTanningServicesInd | 0 | 0 |
| IRS990/InfoInScheduleOPartIIIInd | 0 | X |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InfoInScheduleOPartXIIInd | 0 | X |
| IRS990/InfoInScheduleOPartXIInd | 0 | X |
| IRS990/InformationTechnologyGrp/ManagementAndGeneralAmt | 0 | 142345 |
| IRS990/InformationTechnologyGrp/TotalAmt | 0 | 142345 |
| IRS990/InsuranceGrp/ManagementAndGeneralAmt | 0 | 16463 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 16463 |
| IRS990/InvestmentIncomeGrp/ExclusionAmt | 0 | 63490983 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 63490983 |
| IRS990/InvestmentInJointVentureInd | 0 | 0 |
| IRS990/InvestmentsOtherSecuritiesGrp/BOYAmt | 0 | 133551656 |
| IRS990/InvestmentsOtherSecuritiesGrp/EOYAmt | 0 | 133551655 |
| IRS990/InvestmentsPubTradedSecGrp/BOYAmt | 0 | 2204698508 |
| IRS990/InvestmentsPubTradedSecGrp/EOYAmt | 0 | 2383487979 |
| IRS990/IRPDocumentCnt | 0 | 10 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LegalDomicileStateCd | 0 | DE |
| IRS990/LessCostOthBasisSalesExpnssGrp/SecuritiesAmt | 0 | 770653755 |
| IRS990/LoanOutstandingInd | 0 | 0 |
| IRS990/LobbyingActivitiesInd | 0 | 0 |
| IRS990/LocalChaptersInd | 0 | 0 |
| IRS990/MaterialDiversionOrMisuseInd | 0 | 0 |
| IRS990/MembersOrStockholdersInd | 0 | 1 |
| IRS990/MethodOfAccountingCashInd | 0 | X |
| IRS990/MinutesOfCommitteesInd | 0 | 1 |
| IRS990/MinutesOfGoverningBodyInd | 0 | 1 |
| IRS990/MissionDesc | 0 | MAKING GRANTS AND CONDUCTING SUPPORTING ACTIVITIES EXCLUSIVELY FOR THE BENEFIT OF, TO PERFORM ONE OR MORE OF THE FUNCTIONS OF, OR TO CARRY OUT ONE OR MORE OF THE PURPOSES OF, SUPPORTED ORGANIZATIONS DESCRIBED IN SECTION 501(C)(3) (CONTINUED ON SCHEDULE O)AND 509(A)(1) OR (2) OF THE CODE THAT CONDUCT ACTIVITIES IN ARTS AND CULTURE, EDUCATION, OR MEDICAL RESEARCH AND HEALTHCARE, WITH EMPHASIS ON ENCOURAGING THE HIGHEST STANDARDS OF NON-PROFIT MANAGEMENT. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | 0 |
| IRS990/MoreThan5000KToOrgInd | 0 | 0 |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 2449324409 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 2566528357 |
| IRS990/NetGainOrLossInvestmentsGrp/ExclusionAmt | 0 | 172720104 |
| IRS990/NetGainOrLossInvestmentsGrp/TotalRevenueColumnAmt | 0 | 172720104 |
| IRS990/NetUnrelatedBusTxblIncmAmt | 0 | 0 |
| IRS990/NoDonorRestrictionNetAssetsGrp/BOYAmt | 0 | 2449324409 |
| IRS990/NoDonorRestrictionNetAssetsGrp/EOYAmt | 0 | 2566528357 |
| IRS990/NondeductibleContributionsInd | 0 | 0 |
| IRS990/OfficeExpensesGrp/ManagementAndGeneralAmt | 0 | 23500 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 23500 |
| IRS990/OfficerMailingAddressInd | 0 | 0 |
| IRS990/OperateHospitalInd | 0 | 0 |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsFASB117Ind | 0 | X |
| IRS990/OtherChangesInNetAssetsAmt | 0 | 101228 |
| IRS990/OtherEmployeeBenefitsGrp/ProgramServicesAmt | 0 | 262284 |
| IRS990/OtherEmployeeBenefitsGrp/TotalAmt | 0 | 262284 |
| IRS990/OtherExpensesGrp/Desc | 0 | DUES AND SUBSCRIPTIONS |
| IRS990/OtherExpensesGrp/Desc | 1 | RECRUITING |
| IRS990/OtherExpensesGrp/Desc | 2 | MISCELLANEOUS EXPENSES |
| IRS990/OtherExpensesGrp/Desc | 3 | STATE FILING FEES |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 0 | 130982 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 1 | 113047 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 2 | 27590 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 3 | 1037 |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 130982 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 113047 |
| IRS990/OtherExpensesGrp/TotalAmt | 2 | 27590 |
| IRS990/OtherExpensesGrp/TotalAmt | 3 | 1037 |
| IRS990/OtherSalariesAndWagesGrp/ProgramServicesAmt | 0 | 2829267 |
| IRS990/OtherSalariesAndWagesGrp/TotalAmt | 0 | 2829267 |
| IRS990/PartialLiquidationInd | 0 | 0 |
| IRS990/PayrollTaxesGrp/ProgramServicesAmt | 0 | 709847 |
| IRS990/PayrollTaxesGrp/TotalAmt | 0 | 709847 |
| IRS990/PensionPlanContributionsGrp/ProgramServicesAmt | 0 | 464182 |
| IRS990/PensionPlanContributionsGrp/TotalAmt | 0 | 464182 |
| IRS990/PoliticalCampaignActyInd | 0 | 0 |
| IRS990/PrepaidExpensesDefrdChargesGrp/BOYAmt | 0 | 1735125 |
| IRS990/PrepaidExpensesDefrdChargesGrp/EOYAmt | 0 | 1411940 |
| IRS990/PrincipalOfficerNm | 0 | MAURA MARX |
| IRS990/ProfessionalFundraisingInd | 0 | 0 |
| IRS990/ProhibitedTaxShelterTransInd | 0 | 0 |
| IRS990/PYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/PYContributionsGrantsAmt | 0 | 22942424 |
| IRS990/PYExcessBenefitTransInd | 0 | 0 |
| IRS990/PYGrantsAndSimilarPaidAmt | 0 | 96569000 |
| IRS990/PYInvestmentIncomeAmt | 0 | 256676196 |
| IRS990/PYOtherExpensesAmt | 0 | 1373859 |
| IRS990/PYOtherRevenueAmt | 0 | 0 |
| IRS990/PYProgramServiceRevenueAmt | 0 | 0 |
| IRS990/PYRevenuesLessExpensesAmt | 0 | 176626605 |
| IRS990/PYSalariesCompEmpBnftPaidAmt | 0 | 5049156 |
| IRS990/PYTotalExpensesAmt | 0 | 102992015 |
| IRS990/PYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/PYTotalRevenueAmt | 0 | 279618620 |
| IRS990/QuidProQuoContributionsInd | 0 | 0 |
| IRS990/ReconcilationRevenueExpnssAmt | 0 | 117102720 |
| IRS990/RegularMonitoringEnfrcInd | 0 | 1 |
| IRS990/RelatedEntityInd | 0 | 1 |
| IRS990/RelatedOrganizationCtrlEntInd | 0 | 0 |
| IRS990/ReportInvestmentsOtherSecInd | 0 | 1 |
| IRS990/ReportLandBuildingEquipmentInd | 0 | 0 |
| IRS990/ReportOtherAssetsInd | 0 | 0 |
| IRS990/ReportOtherLiabilitiesInd | 0 | 0 |
| IRS990/ReportProgramRelatedInvstInd | 0 | 0 |
| IRS990/RevenueAmt | 0 | 0 |
| IRS990/SavingsAndTempCashInvstGrp/BOYAmt | 0 | 109339120 |
| IRS990/SavingsAndTempCashInvstGrp/EOYAmt | 0 | 48076783 |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/Contribution35ControlledInd | 0 | 0 |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/ContributionControllerInd | 0 | 0 |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/ContributionFamilyInd | 0 | 0 |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/ControlledDisqualifiedPrsnInd | 0 | 0 |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/DisqualifiedPrsnControllIntInd | 0 | 0 |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/DisqualifiedPrsnOwnrIntInd | 0 | 1 |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/ExcessBusinessHoldingsRulesInd | 0 | 0 |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/ListedByNameGoverningDocInd | 0 | 0 |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/LoanDisqualifiedPersonInd | 0 | 0 |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/OrganizationChangeSuprtOrgInd | 0 | 0 |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/PaymentSubstantialContribtrInd | 0 | 0 |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/SupportedOrgNotOrganizedUSInd | 0 | 0 |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/SupportedOrgSectionC456Ind | 0 | 0 |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/SupportNonSupportedOrgInd | 0 | 0 |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/SuprtOrgNoIRSDeterminationInd | 0 | 0 |
| IRS990ScheduleA/Form990SchAType1SuprtOrgGrp/OperateBenefitNonSuprtOrgInd | 0 | 0 |
| IRS990ScheduleA/Form990SchAType1SuprtOrgGrp/PowerAppointMajorityDirTrstInd | 0 | 1 |
| IRS990ScheduleA/Form990ScheduleAPartVIGrp/ExplanationTxt | 0 | THE SUPPORTED ORGANIZATIONS ARE DESIGNATED BY PURPOSE OR CLASS IN THE ORGANIZATION'S ARTICLES. THE MEMBERS WHICH ELECT A MAJORITY OF THE ORGANIZATION'S DIRECTORS AND CONTROL THE ORGANIZATION ARE ALL PUBLICLY SUPPORTED ORGANIZATIONS WHICH ARE SPECIFIED BY NAME IN THE ORGANIZATION'S BYLAWS AND APPOINTMENT DOCUMENTS AND WHICH FALL WITHIN THE CLASS OF SUPPORTED ORGANIZATIONS THAT THEY REPRESENT. |
| IRS990ScheduleA/Form990ScheduleAPartVIGrp/ExplanationTxt | 1 | DISQUALIFIED PERSONS WITH RESPECT TO THE ORGANIZATION ARE ACTIVE INVESTORS IN THE PUBLIC SECURITIES MARKETS AND THERE MAY BE NUMEROUS INSTANCES WHERE THERE IS OVERLAP BETWEEN THE HOLDINGS IN THE STOCK PORTFOLIOS OF DISQUALIFIED PERSONS AND THE STOCK PORTFOLIO OF THE ORGANIZATION. NEVERTHELESS, THE ORGANIZATION IS CONFIDENT THAT ANY OVERLAP IS COINCIDENTAL AND NO DISQUALIFIED PERSON DERIVED ANY BENEFIT FROM THE ORGANIZATION'S INVESTMENT. THE ORGANIZATION ALSO OWNS APPROXIMATELY 1.7% OF THE STOCK OF FIL LTD. A NON-PUBLICLY TRADED ENTITY IN WHICH A DISQUALIFIED PERSON INDIRECTLY HOLDS A NON-CONTROLLING INTEREST. NO DISQUALIFIED PERSON DERIVES ANY BENEFIT AS A RESULT OF THE ORGANIZATION'S INVESTMENTS. UNDER THE ORGANIZATION'S CONFLICT OF INTEREST POLICY, ANY INVESTMENT DECISION OF THE FOUNDATION TO MAKE AN INVESTMENT IN A SECURITY IN WHICH A DISQUALIFIED PERSON MAY HOLD AN INTEREST (OTHER THAN NON-MATERIAL HOLDINGS OF PUBLICLY AVAILABLE SECURITIES OR MUTUAL FUNDS) WOULD BE MADE EXCLUSIVELY BY THE INDEPENDENT TRUSTEES WHO REPRESENT THE CONTROLLING SUPPORTED ORGANIZATIONS. |
| IRS990ScheduleA/Form990ScheduleAPartVIGrp/ExplanationTxt | 2 | THE ORGANIZATION MADE GRANTS AMONG ITS SUPPORTED ORGANIZATIONS DESIGNATED BY CLASS. SEE DESCRIPTION FOR SECTION A, ITEM 1. |
| IRS990ScheduleA/Form990ScheduleAPartVIGrp/FormAndLineReferenceDesc | 0 | SCHEDULE A, PART IV, SECTION A, LINE 1: |
| IRS990ScheduleA/Form990ScheduleAPartVIGrp/FormAndLineReferenceDesc | 1 | SCHEDULE A, PART IV, SECTION A, LINE 9C: |
| IRS990ScheduleA/Form990ScheduleAPartVIGrp/FormAndLineReferenceDesc | 2 | SCHEDULE A, PART IV, SECTION B, LINE 2: |
| IRS990ScheduleA/OtherSupportSumAmt | 0 | 0 |
| IRS990ScheduleA/SupportedOrganizationsCnt | 0 | 3 |
| IRS990ScheduleA/SupportedOrganizationsTotalCnt | 0 | 3 |
| IRS990ScheduleA/SupportedOrgInformationGrp/EIN | 0 | 042103594 |
| IRS990ScheduleA/SupportedOrgInformationGrp/EIN | 1 | 042103580 |
| IRS990ScheduleA/SupportedOrgInformationGrp/EIN | 2 | 042103607 |
| IRS990ScheduleA/SupportedOrgInformationGrp/GoverningDocumentListedInd | 0 | 1 |
| IRS990ScheduleA/SupportedOrgInformationGrp/GoverningDocumentListedInd | 1 | 1 |
| IRS990ScheduleA/SupportedOrgInformationGrp/GoverningDocumentListedInd | 2 | 1 |
| IRS990ScheduleA/SupportedOrgInformationGrp/OrganizationTypeCd | 0 | 2 |
| IRS990ScheduleA/SupportedOrgInformationGrp/OrganizationTypeCd | 1 | 2 |
| IRS990ScheduleA/SupportedOrgInformationGrp/OrganizationTypeCd | 2 | 7 |
| IRS990ScheduleA/SupportedOrgInformationGrp/OtherSupportAmt | 0 | 0 |
| IRS990ScheduleA/SupportedOrgInformationGrp/OtherSupportAmt | 1 | 0 |
| IRS990ScheduleA/SupportedOrgInformationGrp/OtherSupportAmt | 2 | 0 |
| IRS990ScheduleA/SupportedOrgInformationGrp/SupportAmt | 0 | 2000000 |
| IRS990ScheduleA/SupportedOrgInformationGrp/SupportAmt | 1 | 1750000 |
| IRS990ScheduleA/SupportedOrgInformationGrp/SupportAmt | 2 | 0 |
| IRS990ScheduleA/SupportedOrgInformationGrp/SupportedOrganizationName/BusinessNameLine1Txt | 0 | MASSACHUSETTS INSTITUTE OF TECHNOLOGY |
| IRS990ScheduleA/SupportedOrgInformationGrp/SupportedOrganizationName/BusinessNameLine1Txt | 1 | PRESIDENT AND FELLOWS OF HARVARD COLLEGE |
| IRS990ScheduleA/SupportedOrgInformationGrp/SupportedOrganizationName/BusinessNameLine1Txt | 2 | MUSEUM OF FINE ARTS |
| IRS990ScheduleA/SupportingOrganization509a3Ind | 0 | X |
| IRS990ScheduleA/SupportingOrgType1Ind | 0 | X |
| IRS990ScheduleA/SupportSumAmt | 0 | 3750000 |
| IRS990ScheduleB/ContributorInformationGrp/ContributorBusinessName/BusinessNameLine1 | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorNum | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/AddressLine1 | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/AddressLine2 | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/City | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/State | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/ZIPCode | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/TotalContributionsAmt | 0 | RESTRICTED |
| IRS990/ScheduleBRequiredInd | 0 | 1 |
| IRS990ScheduleD/ExpensesNotReportedAmt | 0 | 33724065 |
| IRS990ScheduleD/ExpensesNotRptFinclStmtAmt | 0 | 0 |
| IRS990ScheduleD/ExpensesSubtotalAmt | 0 | 141749569 |
| IRS990ScheduleD/FootnoteTextInd | 0 | X |
| IRS990ScheduleD/NetUnrealizedGainsInvstAmt | 0 | 53407502 |
| IRS990ScheduleD/OtherExpensesIncludedAmt | 0 | 33724065 |
| IRS990ScheduleD/OtherRevenuesNotIncludedAmt | 0 | -9931 |
| IRS990ScheduleD/OtherSecuritiesGrp/BookValueAmt | 0 | 132836948 |
| IRS990ScheduleD/OtherSecuritiesGrp/BookValueAmt | 1 | 714707 |
| IRS990ScheduleD/OtherSecuritiesGrp/Desc | 0 | ERS |
| IRS990ScheduleD/OtherSecuritiesGrp/Desc | 1 | FIL EQUITY |
| IRS990ScheduleD/OtherSecuritiesGrp/MethodValuationCd | 0 | C |
| IRS990ScheduleD/OtherSecuritiesGrp/MethodValuationCd | 1 | C |
| IRS990ScheduleD/RevenueNotReportedAmt | 0 | 53407502 |
| IRS990ScheduleD/RevenueNotReportedFinclStmtAmt | 0 | -9931 |
| IRS990ScheduleD/RevenueSubtotalAmt | 0 | 258862220 |
| IRS990ScheduleD/SupplementalInformationDetail/ExplanationTxt | 0 | A TAX QUALIFICATION DETERMINATION LETTER HAS BEEN RECEIVED FROM THE INTERNAL REVENUE SERVICE INDICATING THAT THE FOUNDATION IS EXEMPT FROM FEDERAL INCOME TAXES UNDER SECTION 501(C)(3) AND AS A SUPPORTING ORGANIZATION DESCRIBED IN SECTION 509(A)(3) OF THE CODE. THE FOUNDATION RECOGNIZES A TAX BENEFIT OR CHARGE FROM AN UNCERTAIN POSITION WHEN IT IS MORE LIKELY THAN NOT THAT THE POSITION WOULD BE SUSTAINED UPON EXAMINATION. AS OF DECEMBER 31, 2024, THE FOUNDATION HAD NO UNCERTAIN TAX POSITIONS THAT WOULD REQUIRE FINANCIAL STATEMENT RECOGNITION, DERECOGNITION, OR DISCLOSURE. |
| IRS990ScheduleD/SupplementalInformationDetail/ExplanationTxt | 1 | ACCRUAL TO CASH ADJUSTMENT -9,931. |
| IRS990ScheduleD/SupplementalInformationDetail/ExplanationTxt | 2 | ACCRUAL TO CASH ADJUSTMENT 33,724,065. |
| IRS990ScheduleD/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | PART X, LINE 2: |
| IRS990ScheduleD/SupplementalInformationDetail/FormAndLineReferenceDesc | 1 | PART XI, LINE 4B - OTHER ADJUSTMENTS: |
| IRS990ScheduleD/SupplementalInformationDetail/FormAndLineReferenceDesc | 2 | PART XII, LINE 2D - OTHER ADJUSTMENTS: |
| IRS990ScheduleD/TotalBookValueLandBuildingsAmt | 0 | 0 |
| IRS990ScheduleD/TotalBookValueSecuritiesAmt | 0 | 133551655 |
| IRS990ScheduleD/TotalExpensesPerForm990Amt | 0 | 141749569 |
| IRS990ScheduleD/TotalRevenuePerForm990Amt | 0 | 258852289 |
| IRS990ScheduleD/TotalRevEtcAuditedFinclStmtAmt | 0 | 312269722 |
| IRS990ScheduleD/TotExpnsEtcAuditedFinclStmtAmt | 0 | 175473634 |
| IRS990ScheduleI/GrantRecordsMaintainedInd | 0 | 1 |
| IRS990ScheduleI/RecipientTable/CashGrantAmt | 0 | 750000 |
| IRS990ScheduleI/RecipientTable/CashGrantAmt | 1 | 600000 |
| IRS990ScheduleI/RecipientTable/CashGrantAmt | 2 | 750000 |
| IRS990ScheduleI/RecipientTable/CashGrantAmt | 3 | 580000 |
| IRS990ScheduleI/RecipientTable/CashGrantAmt | 4 | 200000 |
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