Liabilities / Assets
6th percentile
Higher debt load relative to assets than 6% of similar nonprofits.
The Oxford Funds Endowment Master
EIN 98-1426715 • 501(c)3 • Oxford, UK
Profile
The endowment master's purpose and activity is to benefit the chancellor, masters and scholars of the university of oxford (university of oxford), an organization recognized by the irs as an educational organization described in irc section 170(b)(1)(a)(ii) that is tax-exempt under irc section 501(c)(3). The university of oxford has established endowment master as a critical component of its investment structure. The investment structure, and endowment master's activities, are designed to optimize investment returns on a portion of the university of oxford's assets. Endowment master also allows certain other charities to invest with endowment master through the oxford funds: non-collegiate feeder, allowing them to make use of endowment master's infrastructure and investment services already provided to the oxford funds: collegiate feeder.
Siviq Scores
Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.
0.01x
Liabilities / Revenue
12th percentile
Higher debt load relative to revenue than 12% of similar nonprofits.
Net Margin
80th percentile
Higher net margin than 80% of similar nonprofits.
Top Officer Pay
2nd percentile
Higher top officer pay than 2% of similar nonprofits.
Top officer pay equals 0.0% of source-year revenue.
Asset Growth
43rd percentile
Faster asset growth than 43% of similar nonprofits.
Revenue Growth
88th percentile
Faster revenue growth than 88% of similar nonprofits.
Balance Sheet
Assets
Up$8,069,564,158
Up $474,870,310 (+6.3%) from 2023
Liabilities
Up$43,995,172
Up $7,050,096 (+19%) from 2023
Net Assets
Up$8,025,568,986
Up $467,820,214 (+6.2%) from 2023
Revenue
Up$438,364,978
Up $131,763,096 (+43%) from 2023
Expenses
Up$346,508,057
Up $21,372,928 (+6.6%) from 2023
Net Income
Up$91,856,921
Up $110,390,168 (+596%) from 2023
Trend Graphs
Filings
Most recent year
2024 • Form 990XML pending. An XML filing is linked for this year, but detailed extraction is still pending.
- Assets
- $8,069,564,158
- Liabilities
- $43,995,172
- Net assets
- $8,025,568,986
- Revenue
- $438,364,978
- Expenses
- $346,508,057
- Net income
- $91,856,921
Latest Detailed Filing
The latest 2024 filing currently has linked XML that has not been fully parsed yet. Showing the latest detailed filing from 2022 below.
Jump To
Filing Snapshot
- Filing Period
- Jan 1, 2022 to Dec 31, 2022
- Signed
- Nov 14, 2023
- Return Version
- 2022v5.0
- Gross Receipts
- $1,165,931,788
Mission and Program Overview
Mission
The endowment master's purpose and activity is to benefit the chancellor, masters and scholars of the university of oxford (university of oxford), an organization recognized by the irs as an educational organization described in irc section 170(b)(1)(a)(ii) that is tax-exempt under irc section 501(c)(3). The university of oxford has established endowment master as a critical component of its investment structure. The investment structure, and endowment master's activities, are designed to optimize investment returns on a portion of the university of oxford's assets. Endowment master also allows certain other charities to invest with endowment master through the oxford funds: non-collegiate feeder, allowing them to make use of endowment master's infrastructure and investment services already provided to the oxford funds: collegiate feeder.
Endowment master was established to manage the endowment funds of the university of oxford in order to provide for the economic benefit of the university of oxford.
Balance Sheet Detail
| Line | Beginning | End | Change |
|---|---|---|---|
| Assets | |||
| Rtn Earn Endowment Incm Other Fnds | $7,604,275,890 | $6,959,777,586 | ▼ $644,498,304 |
| Investments Other Securities | $7,056,356,472 | $6,436,874,123 | ▼ $619,482,349 |
| Land, Buildings, and Equipment, Net | $288,795,744 | $301,384,590 | ▲ $12,588,846 |
| Cash and Non-Interest-Bearing Accounts | $396,687,891 | $208,255,271 | ▼ $188,432,620 |
| Receivable From Disqualified Prsn | $0 | $0 | → $0 |
| Receivables From Officers Etc | $0 | $0 | → $0 |
| Investments Program Related | $0 | - | - |
| Loans From Officers Directors | $0 | $0 | → $0 |
| Total Assets | $7,889,922,458 | $6,981,885,858 | ▼ $908,036,600 |
| Other Assets Total | $148,082,351 | $35,371,874 | ▼ $112,710,477 |
| Liabilities | |||
| Accounts Payable and Accrued Expenses | $285,646,568 | $22,108,272 | ▼ $263,538,296 |
| Other Liabilities | $0 | $0 | → $0 |
| Total Liabilities | $285,646,568 | $22,108,272 | ▼ $263,538,296 |
| Net Assets / Fund Balance | |||
| Total Net Assets Fund Balance | $7,604,275,890 | $6,959,777,586 | ▼ $644,498,304 |
| Total Liabilities and Net Assets / Fund Balance | $7,889,922,458 | $6,981,885,858 | ▼ $908,036,600 |
Asset Categories
| Asset | Book Value | Depreciation | Basis |
|---|---|---|---|
| Land | $301,384,590 | - | - |
| Other Securities | $4,607,704,580 | - | - |
Endowment Activity
| Period | Beginning | Contrib. | Gain/Loss | Other Uses | End |
|---|---|---|---|---|---|
| 2022 | $7,604,275,889 | $922,502,751 | ▼ $1,289,785,980 | $244,274,464 | $6,959,777,586 |
| 2021 | $6,439,293,038 | $531,735,265 | ▲ $902,539,405 | $235,466,530 | $7,604,275,889 |
| 2020 | $5,388,981,777 | $379,241,222 | ▲ $890,898,065 | $194,352,447 | $6,439,293,038 |
| 2019 | $4,315,692,534 | $336,331,082 | ▲ $930,706,799 | $170,240,838 | $5,388,981,777 |
| 2018 | $0 | $4,708,318,338 | ▼ $382,370,820 | - | $4,315,692,534 |
Compensation and Service Providers
Employees
| Name | Title | Base | Total |
|---|---|---|---|
| - | Corporate Trustee | $20,488 | $20,488 |
Highest Paid Contractors
| Contractor | Services | Location | Compensation |
|---|---|---|---|
| Oxford University Endowment Management Limited | Investment manager | 27 Park End Street, 1043 BW, Oxford, Uk | $29,148,400 |
| Citco Fund Services (Europe) BV | Admin and AFS preparation | Naritaweg 165, Canary Wharf, London, Uk | $1,740,556 |
| JP Morgan Europe Limited | Depositary | 25 Bank Street, 162-168 Regent Street, London, Uk | $1,197,190 |
| Fulwell Capital Limited | Property management | Linen Hall, Cambridge, Uk | $486,003 |
| Savills (UK) Ltd (Cambridge) | Property management | 132-134 Hills Road, Uk | $415,226 |
Revenue and Support
Revenue Composition
- Contributions and Grants
- $0
- Program Service Revenue
- $922,502,751
- Investment Income
- $232,097,706
- Other Revenue
- $6,060,030
- Change in Net Assets
- $883,445,413
Audited Revenue Reconciliation
- Revenue per Audited Statements
- $243,429,036
- Revenue Not Reported on Financial Statements
- $917,231,450
- Revenue Not Reported on Form 990
- $-720,585,135
- Other Revenue Adjustments
- $917,231,450
- Total Revenue per Audited Statements
- $-477,156,099
- Total Revenue per Form 990
- $1,160,660,486
Expenses and Functional Allocation
Major Expense Lines
| Line Item | Amount |
|---|---|
| Other Expenses | $277,194,586 |
| Salaries, Compensation, and Employee Benefits | $20,488 |
| Grants and Similar Amounts Paid | $0 |
| Professional Fundraising Fees | $0 |
| Total Fundraising Expense | $0 |
Functional Expense Allocation
| Line Item | Program | Management | Fundraising | Total |
|---|---|---|---|---|
| Fees for Service Investment Mgmnt Fees | - | $29,708,778 | - | $29,708,778 |
| Fees for Services Management | - | $1,721,793 | - | $1,721,793 |
| Fees for Services Accounting | - | $230,231 | - | $230,231 |
| Interest | - | $178,311 | - | $178,311 |
| Comp Disqual Persons | - | $20,488 | - | $20,488 |
| Other Expenses | $244,274,463 | $16,318 | - | $16,318 |
| Total Functional Expenses | $244,274,463 | $32,940,611 | $0 | $277,215,074 |
Audited Expense Reconciliation
| Line Item | Amount |
|---|---|
| Total Expenses per Form 990 | $277,215,074 |
| Expenses Not Reported on Financial Statements | $244,274,464 |
| Other Expense Adjustments | $244,274,464 |
| Total Expenses per Audited Statements | $38,211,910 |
| Expenses per Audited Statements | $32,940,610 |
| Expenses Not Reported on Form 990 | $5,271,300 |
International Activity
International Summary
- Offices
- 1
- Employees
- 0
- Spending
- $4,673,544,461
International Compliance
- Activity in boycott countries
- No
- Foreign corporation ownership
- Yes
- Foreign partnership interest
- Yes
- Interest in foreign trust
- No
- Passive foreign investment company interest
- Yes
- Transfers to foreign corporations
- No
International Activities
| Region | Activity | Services | Offices | Employees | Spending |
|---|---|---|---|---|---|
| Central America and the Caribbean | Investments | - | 0 | 0 | $2,974,464,805 |
| Europe (Including Iceland and Greenland) | Investments | Management & General | 0 | 0 | $1,638,523,381 |
| Europe (Including Iceland and Greenland) | Program Services | - | 1 | 0 | $32,940,611 |
| Sub-Saharan Africa | Investments | - | 0 | 0 | $27,615,664 |
Fundraising, Events, and Gaming
- Fundraising activities
- No
- Gaming activities
- No
- Professional fundraiser used
- No
Fundraising and Gaming Totals
| Line Item | Amount |
|---|---|
| Professional Fundraising Fees | $0 |
Political and Lobbying Activity
- Political campaign activity
- No
- Lobbying activity
- No
Insider Transactions and Loans
Loans and Receivables
| Line Item | Beginning | End | Change |
|---|---|---|---|
| Loans from Officers, Directors, Trustees, and Key Employees | $0 | $0 | → $0 |
| Receivables from Disqualified Persons | $0 | $0 | → $0 |
| Receivables from Officers, Directors, Trustees, and Key Employees | $0 | $0 | → $0 |
Governance and Compliance
Governance Checklist
- Compiled or reviewed by an accountant
- No
- Audit committee
- Yes
- Business relationship with 35% controlled entity
- No
- Business relationship with family members
- No
- Business relationship with organization members
- No
- Material changes to governing documents
- No
- Compensation from other sources disclosed
- No
- CEO compensation reviewed
- No
- Other officer compensation reviewed
- No
- Conflict-of-interest policy
- No
- Audited financial statements prepared
- No
- Key decisions subject to board approval
- No
- Management duties delegated
- Yes
Governance Explanations
Form 990, Part VI, Line 1A LINES 1 & 3
“Endowment master has no officers or directors. The sole trustee of endowment master, as required under united kingdom law, is tof corporate trustee limited, an indirect subsidiary of the university of oxford, an organization recognized as tax-exempt under section 501(c)(3) by the internal revenue service. Investment management activities of endowment master are subject to oversight by the university's investment committee.”
Form 990, Part VI, Line 8A LINES 8A & 8B
“Endowment master has no officers or directors. Tof corporate trustee limited, endowment master's sole trustee, manages the funds through ouem. Meetings of the governing body and committees are regularly and contemporaneously documented in accordance with the requirements of united kingdom law.”
Form 990, Part VI, Line 12A LINES 12, 13 & 14
“The funds were administered in accordance with policies set forth by ouem, a wholly-owned subsidiary of the university of oxford.”
Form 990, Part VI, Line 15A LINES 15A & 15B
“Endowment master does not have any employees and therefore does not provide compensation to any individuals.”
Form 990, Part VI, Line 11B Review of form 990 by governing body
“The form 990 is prepared by ernst & young, llp, based on the information provided by endowment master through ouem. Ouem's chief operating officer reviews the return prior to filing. Once approved, ernst & young signs as preparer and the chief operating officer signs on behalf of the funds.”
Form 990, Part VI, Line 19 Required documents available to the public
“Endowment master's financial statements and governing documents are not available to the public.”
Filing and Contact Details
Filer
- Filer Name
- The Oxford Funds Endowment Master
- EIN
- 98-1426715
- Phone
- 0186563290
- Address
- UK
Signing Officer
- Name
- Fay Ashwell
- Title
- COO
- Signed
- 2023-11-14
- Discuss with paid preparer
- Yes
Organization Details
- Formed
- 2018
- Voting Board Members
- 1
- Independent Board Members
- 0
- Employees
- 0
- Volunteers
- 0
Preparer
- Firm
- Ernst & Young US Llp
- Address
- 1101 NEW YORK AVENUE NW, Washington, DC 20005
- Preparer
- Amber N Doane
- Phone
- 2023276000
Supplemental Narrative
Additional Explanations
Form 990, Part I, Line 1 ORGANIZATIONS PHONE NUMBER
“Due to character limitations on the electronic filing software, the full phone number would not print. This number is also the number for part vi, line 20, to reach the invidivual of whom the books are in care. The phone number is as follows: +44 (0)1865 632900”
Form 990, Part I, Line 1 PART I
“The financial statements of the oxford funds: endowment master ("endowment master") are presented in great british pounds. The amounts reported on part x of the form 990 were converted from great british pounds to us dollars using the spot conversation rate of 12/31/2022 of 1.2098. The amounts reported on parts vii, viii, and ix of the form 990 were converted from great british pounds to us dollars using the average conversion rate for the year ended 12/31/2022 of 1.2366. The foreign currency conversion results in an adjusting item to the funds's change in net assets for the period which is reported on form 990, part xi, line 9. The nonstatutory financial statements have been prepared under the historical-cost basis, as modified by the revaluation of investments, in accordance with applicable united kingdom accounting standards.”
Form 990, Part XI, Line 9 Other changes in net assets or fund balances
“Foreign currency translation adjustment - -xxx-xx-xxxx;”
Form 990, Part XII, Line 1 PART XII, LINE 1
“The non-statutory financial statements have been prepared under the historical-cost basis, as modified by the revaluation of investments to fair value, in accordance with applicable united kingdom accounting standards.”
Form 990, Part XII, Line 2C PART XII, LINE 2C
“Ouem assumes responsibility for oversight of the audit, review and compilation of the fund's financial statements, and selection of the independent accountant.”
Financial Statement Notes
Schedule D, Part V, Line 4 Intended uses of endowment funds
“To be used for the charitable purposes of the underlying investors.”
Schedule D, Part XI, Line 4(B) Other revenues in form 990 not in audited financial statements
“Rental expenses - -5271301 sale of fund units - xxx-xx-xxxx”
Schedule D, Part XII, Line 2(D) Other expenses in audited financial statements not in form 990
“Rental expenses - 5271300”
Schedule D, Part XII, Line 4(B) Other expenses in form 990 not in audited financial statements
“Distribution to unitholders - xxx-xx-xxxx”
Raw XML AppendixShowing 400 of 566 raw XML fields
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 | false |
| IRS990/AccountsPayableAccrExpnssGrp/BOYAmt | 0 | 285646568 |
| IRS990/AccountsPayableAccrExpnssGrp/EOYAmt | 0 | 22108272 |
| IRS990/ActivitiesConductedPrtshpInd | 0 | false |
| IRS990/ActivityOrMissionDesc | 0 | ENDOWMENT MASTER WAS ESTABLISHED TO MANAGE THE ENDOWMENT FUNDS OF THE UNIVERSITY OF OXFORD IN ORDER TO PROVIDE FOR THE ECONOMIC BENEFIT OF THE UNIVERSITY OF OXFORD. |
| IRS990/AllOtherExpensesGrp/FundraisingAmt | 0 | 0 |
| IRS990/AllOtherExpensesGrp/ManagementAndGeneralAmt | 0 | 0 |
| IRS990/AllOtherExpensesGrp/ProgramServicesAmt | 0 | 0 |
| IRS990/AllOtherExpensesGrp/TotalAmt | 0 | 0 |
| IRS990/AuditCommitteeInd | 0 | true |
| IRS990/BooksInCareOfDetail/BusinessName/BusinessNameLine1Txt | 0 | FAY ASHWELL |
| IRS990/BooksInCareOfDetail/ForeignAddress/AddressLine1Txt | 0 | 27 PARK END STREET |
| IRS990/BooksInCareOfDetail/ForeignAddress/CityNm | 0 | OXFORD |
| IRS990/BooksInCareOfDetail/ForeignAddress/CountryCd | 0 | UK |
| IRS990/BooksInCareOfDetail/ForeignAddress/ForeignPostalCd | 0 | OX11HU |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 0186563290 |
| IRS990/BusinessRlnWith35CtrlEntInd | 0 | false |
| IRS990/BusinessRlnWithFamMemInd | 0 | false |
| IRS990/BusinessRlnWithOrgMemInd | 0 | false |
| IRS990/CashNonInterestBearingGrp/BOYAmt | 0 | 396687891 |
| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 208255271 |
| IRS990/ChangeToOrgDocumentsInd | 0 | false |
| IRS990/CntrctRcvdGreaterThan100KCnt | 0 | 16 |
| IRS990/CollectionsOfArtInd | 0 | false |
| IRS990/CompDisqualPersonsGrp/ManagementAndGeneralAmt | 0 | 20488 |
| IRS990/CompDisqualPersonsGrp/TotalAmt | 0 | 20488 |
| IRS990/CompensationFromOtherSrcsInd | 0 | false |
| IRS990/CompensationProcessCEOInd | 0 | false |
| IRS990/CompensationProcessOtherInd | 0 | false |
| IRS990/ConflictOfInterestPolicyInd | 0 | false |
| IRS990/ConservationEasementsInd | 0 | false |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | false |
| IRS990/ContractorCompensationGrp/CompensationAmt | 0 | 29148400 |
| IRS990/ContractorCompensationGrp/CompensationAmt | 1 | 1740556 |
| IRS990/ContractorCompensationGrp/CompensationAmt | 2 | 1197190 |
| IRS990/ContractorCompensationGrp/CompensationAmt | 3 | 486003 |
| IRS990/ContractorCompensationGrp/CompensationAmt | 4 | 415226 |
| IRS990/ContractorCompensationGrp/ContractorAddress/ForeignAddress/AddressLine1Txt | 0 | 27 Park End Street |
| IRS990/ContractorCompensationGrp/ContractorAddress/ForeignAddress/AddressLine1Txt | 1 | Naritaweg 165 |
| IRS990/ContractorCompensationGrp/ContractorAddress/ForeignAddress/AddressLine1Txt | 2 | 25 Bank Street |
| IRS990/ContractorCompensationGrp/ContractorAddress/ForeignAddress/AddressLine1Txt | 3 | Linen Hall |
| IRS990/ContractorCompensationGrp/ContractorAddress/ForeignAddress/AddressLine1Txt | 4 | 132-134 Hills Road |
| IRS990/ContractorCompensationGrp/ContractorAddress/ForeignAddress/AddressLine2Txt | 0 | 1043 BW |
| IRS990/ContractorCompensationGrp/ContractorAddress/ForeignAddress/AddressLine2Txt | 1 | Canary Wharf |
| IRS990/ContractorCompensationGrp/ContractorAddress/ForeignAddress/AddressLine2Txt | 2 | 162-168 Regent Street |
| IRS990/ContractorCompensationGrp/ContractorAddress/ForeignAddress/CityNm | 0 | Oxford |
| IRS990/ContractorCompensationGrp/ContractorAddress/ForeignAddress/CityNm | 1 | London |
| IRS990/ContractorCompensationGrp/ContractorAddress/ForeignAddress/CityNm | 2 | London |
| IRS990/ContractorCompensationGrp/ContractorAddress/ForeignAddress/CityNm | 3 | Cambridge |
| IRS990/ContractorCompensationGrp/ContractorAddress/ForeignAddress/CountryCd | 0 | UK |
| IRS990/ContractorCompensationGrp/ContractorAddress/ForeignAddress/CountryCd | 1 | UK |
| IRS990/ContractorCompensationGrp/ContractorAddress/ForeignAddress/CountryCd | 2 | UK |
| IRS990/ContractorCompensationGrp/ContractorAddress/ForeignAddress/CountryCd | 3 | UK |
| IRS990/ContractorCompensationGrp/ContractorAddress/ForeignAddress/CountryCd | 4 | UK |
| IRS990/ContractorCompensationGrp/ContractorAddress/ForeignAddress/ForeignPostalCd | 0 | OX11HU |
| IRS990/ContractorCompensationGrp/ContractorAddress/ForeignAddress/ForeignPostalCd | 1 | E145JP |
| IRS990/ContractorCompensationGrp/ContractorAddress/ForeignAddress/ForeignPostalCd | 2 | W1B5TF |
| IRS990/ContractorCompensationGrp/ContractorAddress/ForeignAddress/ForeignPostalCd | 3 | CB28PA |
| IRS990/ContractorCompensationGrp/ContractorName/BusinessName/BusinessNameLine1Txt | 0 | Oxford University Endowment Management Limited |
| IRS990/ContractorCompensationGrp/ContractorName/BusinessName/BusinessNameLine1Txt | 1 | Citco Fund Services (Europe) BV |
| IRS990/ContractorCompensationGrp/ContractorName/BusinessName/BusinessNameLine1Txt | 2 | JP Morgan Europe Limited |
| IRS990/ContractorCompensationGrp/ContractorName/BusinessName/BusinessNameLine1Txt | 3 | Fulwell Capital Limited |
| IRS990/ContractorCompensationGrp/ContractorName/BusinessName/BusinessNameLine1Txt | 4 | Savills (UK) Ltd (Cambridge) |
| IRS990/ContractorCompensationGrp/ServicesDesc | 0 | Investment manager |
| IRS990/ContractorCompensationGrp/ServicesDesc | 1 | Admin and AFS preparation |
| IRS990/ContractorCompensationGrp/ServicesDesc | 2 | Depositary |
| IRS990/ContractorCompensationGrp/ServicesDesc | 3 | Property management |
| IRS990/ContractorCompensationGrp/ServicesDesc | 4 | Property management |
| IRS990/CreditCounselingInd | 0 | false |
| IRS990/CYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/CYContributionsGrantsAmt | 0 | 0 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 0 |
| IRS990/CYInvestmentIncomeAmt | 0 | 232097706 |
| IRS990/CYOtherExpensesAmt | 0 | 277194586 |
| IRS990/CYOtherRevenueAmt | 0 | 6060030 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 922502751 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | 883445413 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 20488 |
| IRS990/CYTotalExpensesAmt | 0 | 277215074 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 0 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 1160660487 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | false |
| IRS990/DeductibleArtContributionInd | 0 | false |
| IRS990/DeductibleNonCashContriInd | 0 | false |
| IRS990/DelegationOfMgmtDutiesInd | 0 | true |
| IRS990/Desc | 0 | ENDOWMENT MASTER'S PURPOSE IS TO PROVIDE SUPPORT TO THE UNIVERSITY OF OXFORD THROUGH ITS INVESTMENT RETURNS. THERE WAS $244,274,464 OF DISTRIBUTIONS TO UNITHOLDERS OF THE FUNDS FOR THE YEAR 2022. |
| IRS990/DescribedInSection501c3Ind | 0 | true |
| IRS990/DisregardedEntityInd | 0 | false |
| IRS990/DocumentRetentionPolicyInd | 0 | false |
| IRS990/DonorAdvisedFundInd | 0 | false |
| IRS990/DonorRstrOrQuasiEndowmentsInd | 0 | true |
| IRS990/ElectionOfBoardMembersInd | 0 | false |
| IRS990/EmployeeCnt | 0 | 0 |
| IRS990/EngagedInExcessBenefitTransInd | 0 | false |
| IRS990/ExpenseAmt | 0 | 244274464 |
| IRS990/FamilyOrBusinessRlnInd | 0 | false |
| IRS990/FederalGrantAuditRequiredInd | 0 | false |
| IRS990/FeesForServicesAccountingGrp/ManagementAndGeneralAmt | 0 | 230231 |
| IRS990/FeesForServicesAccountingGrp/TotalAmt | 0 | 230231 |
| IRS990/FeesForServicesLegalGrp/ManagementAndGeneralAmt | 0 | 0 |
| IRS990/FeesForServicesLegalGrp/TotalAmt | 0 | 0 |
| IRS990/FeesForServicesManagementGrp/ManagementAndGeneralAmt | 0 | 1721793 |
| IRS990/FeesForServicesManagementGrp/TotalAmt | 0 | 1721793 |
| IRS990/FeesForServicesOtherGrp/FundraisingAmt | 0 | 0 |
| IRS990/FeesForServicesOtherGrp/ManagementAndGeneralAmt | 0 | 0 |
| IRS990/FeesForServicesOtherGrp/ProgramServicesAmt | 0 | 0 |
| IRS990/FeesForServicesOtherGrp/TotalAmt | 0 | 0 |
| IRS990/FeesForSrvcInvstMgmntFeesGrp/ManagementAndGeneralAmt | 0 | 29708778 |
| IRS990/FeesForSrvcInvstMgmntFeesGrp/TotalAmt | 0 | 29708778 |
| IRS990/ForeignActivitiesInd | 0 | true |
| IRS990/ForeignAddress/AddressLine1Txt | 0 | 27 PARK END STREET |
| IRS990/ForeignAddress/CityNm | 0 | OXFORD |
| IRS990/ForeignAddress/CountryCd | 0 | UK |
| IRS990/ForeignAddress/ForeignPostalCd | 0 | OX11HU |
| IRS990/ForeignCountryCd | 0 | UK |
| IRS990/ForeignFinancialAccountInd | 0 | true |
| IRS990/ForeignOfficeInd | 0 | true |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 0 | 0.0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 0 | 0.0 |
| IRS990/Form990PartVIISectionAGrp/BusinessName/BusinessNameLine1Txt | 0 | TOF CORPORATE TRUSTEE LIMITED |
| IRS990/Form990PartVIISectionAGrp/InstitutionalTrusteeInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 0 | 20488 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 0 | CORPORATE TRUSTEE |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | false |
| IRS990/Form990TFiledInd | 0 | true |
| IRS990/FormationYr | 0 | 2018 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | false |
| IRS990/FSAuditedBasisGrp/SeparateBasisFinclStmtInd | 0 | X |
| IRS990/FSAuditedInd | 0 | true |
| IRS990/FundraisingActivitiesInd | 0 | false |
| IRS990/GainOrLossGrp/OtherAmt | 0 | 0 |
| IRS990/GainOrLossGrp/SecuritiesAmt | 0 | 221951810 |
| IRS990/GamingActivitiesInd | 0 | false |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 1 |
| IRS990/GrantAmt | 0 | 0 |
| IRS990/GrantsToIndividualsInd | 0 | false |
| IRS990/GrantsToOrganizationsInd | 0 | false |
| IRS990/GrantToRelatedPersonInd | 0 | false |
| IRS990/GrossAmountSalesAssetsGrp/SecuritiesAmt | 0 | 221951810 |
| IRS990/GrossReceiptsAmt | 0 | 1165931788 |
| IRS990/GrossRentsGrp/RealAmt | 0 | 10823114 |
| IRS990/GroupReturnForAffiliatesInd | 0 | false |
| IRS990/IncludeFIN48FootnoteInd | 0 | false |
| IRS990/IndependentAuditFinclStmtInd | 0 | true |
| IRS990/IndependentVotingMemberCnt | 0 | 0 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 0 |
| IRS990/IndoorTanningServicesInd | 0 | false |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InfoInScheduleOPartVInd | 0 | X |
| IRS990/InfoInScheduleOPartXIInd | 0 | X |
| IRS990/InterestGrp/ManagementAndGeneralAmt | 0 | 178311 |
| IRS990/InterestGrp/TotalAmt | 0 | 178311 |
| IRS990/InvestmentIncomeGrp/ExclusionAmt | 0 | 4656673 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 10145896 |
| IRS990/InvestmentIncomeGrp/UnrelatedBusinessRevenueAmt | 0 | 5489223 |
| IRS990/InvestmentInJointVentureInd | 0 | false |
| IRS990/InvestmentsOtherSecuritiesGrp/BOYAmt | 0 | 7056356472 |
| IRS990/InvestmentsOtherSecuritiesGrp/EOYAmt | 0 | 6436874123 |
| IRS990/InvestmentsProgramRelatedGrp/BOYAmt | 0 | 0 |
| IRS990/IRPDocumentCnt | 0 | 0 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LandBldgEquipAccumDeprecAmt | 0 | 0 |
| IRS990/LandBldgEquipBasisNetGrp/BOYAmt | 0 | 288795744 |
| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 301384590 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 301384590 |
| IRS990/LegalDomicileCountryCd | 0 | UK |
| IRS990/LessRentalExpensesGrp/RealAmt | 0 | 5271301 |
| IRS990/LoanOutstandingInd | 0 | false |
| IRS990/LoansFromOfficersDirectorsGrp/BOYAmt | 0 | 0 |
| IRS990/LoansFromOfficersDirectorsGrp/EOYAmt | 0 | 0 |
| IRS990/LobbyingActivitiesInd | 0 | false |
| IRS990/LocalChaptersInd | 0 | false |
| IRS990/MaterialDiversionOrMisuseInd | 0 | false |
| IRS990/MembersOrStockholdersInd | 0 | false |
| IRS990/MethodOfAccountingOtherInd | 0 | X |
| IRS990/MinutesOfCommitteesInd | 0 | true |
| IRS990/MinutesOfGoverningBodyInd | 0 | true |
| IRS990/MiscellaneousRevenueGrp/ExclusionAmt | 0 | 0 |
| IRS990/MiscellaneousRevenueGrp/RelatedOrExemptFuncIncomeAmt | 0 | 0 |
| IRS990/MiscellaneousRevenueGrp/TotalRevenueColumnAmt | 0 | 0 |
| IRS990/MiscellaneousRevenueGrp/UnrelatedBusinessRevenueAmt | 0 | 0 |
| IRS990/MissionDesc | 0 | THE ENDOWMENT MASTER'S PURPOSE AND ACTIVITY IS TO BENEFIT THE CHANCELLOR, MASTERS AND SCHOLARS OF THE UNIVERSITY OF OXFORD (UNIVERSITY OF OXFORD), AN ORGANIZATION RECOGNIZED BY THE IRS AS AN EDUCATIONAL ORGANIZATION DESCRIBED IN IRC SECTION 170(B)(1)(A)(II) THAT IS TAX-EXEMPT UNDER IRC SECTION 501(C)(3). THE UNIVERSITY OF OXFORD HAS ESTABLISHED ENDOWMENT MASTER AS A CRITICAL COMPONENT OF ITS INVESTMENT STRUCTURE. THE INVESTMENT STRUCTURE, AND ENDOWMENT MASTER'S ACTIVITIES, ARE DESIGNED TO OPTIMIZE INVESTMENT RETURNS ON A PORTION OF THE UNIVERSITY OF OXFORD'S ASSETS. ENDOWMENT MASTER ALSO ALLOWS CERTAIN OTHER CHARITIES TO INVEST WITH ENDOWMENT MASTER THROUGH THE OXFORD FUNDS: NON-COLLEGIATE FEEDER, ALLOWING THEM TO MAKE USE OF ENDOWMENT MASTER'S INFRASTRUCTURE AND INVESTMENT SERVICES ALREADY PROVIDED TO THE OXFORD FUNDS: COLLEGIATE FEEDER. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | false |
| IRS990/MoreThan5000KToOrgInd | 0 | false |
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| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 6959777586 |
| IRS990/NetGainOrLossInvestmentsGrp/ExclusionAmt | 0 | 221951810 |
| IRS990/NetGainOrLossInvestmentsGrp/TotalRevenueColumnAmt | 0 | 221951810 |
| IRS990/NetRentalIncomeOrLossGrp/ExclusionAmt | 0 | 5551813 |
| IRS990/NetRentalIncomeOrLossGrp/TotalRevenueColumnAmt | 0 | 5551813 |
| IRS990/NetUnrelatedBusTxblIncmAmt | 0 | 5123228 |
| IRS990/NetUnrlzdGainsLossesInvstAmt | 0 | -720585135 |
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| IRS990/OfficerMailingAddressInd | 0 | false |
| IRS990/OperateHospitalInd | 0 | false |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OtherAssetsTotalGrp/BOYAmt | 0 | 148082351 |
| IRS990/OtherAssetsTotalGrp/EOYAmt | 0 | 35371874 |
| IRS990/OtherChangesInNetAssetsAmt | 0 | -807358582 |
| IRS990/OtherExpensesGrp/Desc | 0 | DISTRIBUTIONS TO UNITHOLDERS |
| IRS990/OtherExpensesGrp/Desc | 1 | DEPOSITORY FEES |
| IRS990/OtherExpensesGrp/Desc | 2 | CUSTODIAN FEES |
| IRS990/OtherExpensesGrp/Desc | 3 | OTHER MISC EXPENSES |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 0 | 0 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 1 | 1031227 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 2 | 33465 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 3 | 16318 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 0 | 244274463 |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 244274463 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 1031227 |
| IRS990/OtherExpensesGrp/TotalAmt | 2 | 33465 |
| IRS990/OtherExpensesGrp/TotalAmt | 3 | 16318 |
| IRS990/OtherLiabilitiesGrp/BOYAmt | 0 | 0 |
| IRS990/OtherLiabilitiesGrp/EOYAmt | 0 | 0 |
| IRS990/OtherRevenueMiscGrp/BusinessCd | 0 | 522300 |
| IRS990/OtherRevenueMiscGrp/Desc | 0 | REBATE INCOME |
| IRS990/OtherRevenueMiscGrp/ExclusionAmt | 0 | 508217 |
| IRS990/OtherRevenueMiscGrp/TotalRevenueColumnAmt | 0 | 508217 |
| IRS990/OtherRevenueTotalAmt | 0 | 508217 |
| IRS990/PartialLiquidationInd | 0 | false |
| IRS990/PoliticalCampaignActyInd | 0 | false |
| IRS990/PrincipalOfcrBusinessName/BusinessNameLine1Txt | 0 | FAY ASHWELL |
| IRS990/ProfessionalFundraisingInd | 0 | false |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 0 | 523000 |
| IRS990/ProgramServiceRevenueGrp/Desc | 0 | SALE OF FUND UNITS |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 0 | 922502751 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 0 | 922502751 |
| IRS990/ProhibitedTaxShelterTransInd | 0 | false |
| IRS990/PYExcessBenefitTransInd | 0 | false |
| IRS990/PYInvestmentIncomeAmt | 0 | 412844899 |
| IRS990/PYOtherExpensesAmt | 0 | 269268484 |
| IRS990/PYOtherRevenueAmt | 0 | 7462320 |
| IRS990/PYProgramServiceRevenueAmt | 0 | 531735265 |
| IRS990/PYRevenuesLessExpensesAmt | 0 | 682750665 |
| IRS990/PYSalariesCompEmpBnftPaidAmt | 0 | 23335 |
| IRS990/PYTotalExpensesAmt | 0 | 269291819 |
| IRS990/PYTotalRevenueAmt | 0 | 952042484 |
| IRS990/RcvblFromDisqualifiedPrsnGrp/BOYAmt | 0 | 0 |
| IRS990/RcvblFromDisqualifiedPrsnGrp/EOYAmt | 0 | 0 |
| IRS990/ReceivablesFromOfficersEtcGrp/BOYAmt | 0 | 0 |
| IRS990/ReceivablesFromOfficersEtcGrp/EOYAmt | 0 | 0 |
| IRS990/ReconcilationRevenueExpnssAmt | 0 | 883445413 |
| IRS990/RelatedEntityInd | 0 | true |
| IRS990/RelatedOrganizationCtrlEntInd | 0 | true |
| IRS990/RentalIncomeOrLossGrp/PersonalAmt | 0 | 0 |
| IRS990/RentalIncomeOrLossGrp/RealAmt | 0 | 5551813 |
| IRS990/ReportInvestmentsOtherSecInd | 0 | true |
| IRS990/ReportLandBuildingEquipmentInd | 0 | true |
| IRS990/ReportOtherAssetsInd | 0 | false |
| IRS990/ReportOtherLiabilitiesInd | 0 | false |
| IRS990/ReportProgramRelatedInvstInd | 0 | false |
| IRS990/RevenueAmt | 0 | 922502751 |
| IRS990/RtnEarnEndowmentIncmOthFndsGrp/BOYAmt | 0 | 7604275890 |
| IRS990/RtnEarnEndowmentIncmOthFndsGrp/EOYAmt | 0 | 6959777586 |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/Contribution35ControlledInd | 0 | false |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/ContributionControllerInd | 0 | false |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/ContributionFamilyInd | 0 | false |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/ControlDecidingGrntFrgnOrgInd | 0 | false |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/ControlledDisqualifiedPrsnInd | 0 | false |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/DisqualifiedPrsnControllIntInd | 0 | false |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/DisqualifiedPrsnOwnrIntInd | 0 | false |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/ExcessBusinessHoldingsRulesInd | 0 | false |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/ListedByNameGoverningDocInd | 0 | true |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/LoanDisqualifiedPersonInd | 0 | false |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/OrganizationChangeSuprtOrgInd | 0 | false |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/PaymentSubstantialContribtrInd | 0 | false |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/SupportedOrgNotOrganizedUSInd | 0 | true |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/SupportedOrgSectionC456Ind | 0 | false |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/SupportForeignOrgNoDetermInd | 0 | false |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/SupportNonSupportedOrgInd | 0 | false |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/SuprtOrgNoIRSDeterminationInd | 0 | false |
| IRS990ScheduleA/Form990SchAType1SuprtOrgGrp/OperateBenefitNonSuprtOrgInd | 0 | false |
| IRS990ScheduleA/Form990SchAType1SuprtOrgGrp/PowerAppointMajorityDirTrstInd | 0 | false |
| IRS990ScheduleA/OtherSupportSumAmt | 0 | 0 |
| IRS990ScheduleA/SupportedOrganizationsCnt | 0 | 1 |
| IRS990ScheduleA/SupportedOrganizationsTotalCnt | 0 | 1 |
| IRS990ScheduleA/SupportedOrgInformationGrp/EIN | 0 | 986001062 |
| IRS990ScheduleA/SupportedOrgInformationGrp/GoverningDocumentListedInd | 0 | true |
| IRS990ScheduleA/SupportedOrgInformationGrp/OrganizationTypeCd | 0 | 2 |
| IRS990ScheduleA/SupportedOrgInformationGrp/OtherSupportAmt | 0 | 0 |
| IRS990ScheduleA/SupportedOrgInformationGrp/SupportAmt | 0 | 210417431 |
| IRS990ScheduleA/SupportedOrgInformationGrp/SupportedOrganizationName/BusinessNameLine1Txt | 0 | THE CHANCELLOR MASTER AND SCHOLARS OF THE UNIVERSITY OF OXFORD |
| IRS990ScheduleA/SupportingOrganization509a3Ind | 0 | X |
| IRS990ScheduleA/SupportingOrgType1Ind | 0 | X |
| IRS990ScheduleA/SupportSumAmt | 0 | 210417431 |
| IRS990/ScheduleBRequiredInd | 0 | false |
| IRS990ScheduleD/BoardDesignatedBalanceEOYPct | 0 | 0.0 |
| IRS990ScheduleD/CYEndwmtFundGrp/AdministrativeExpensesAmt | 0 | 32940610 |
| IRS990ScheduleD/CYEndwmtFundGrp/BeginningYearBalanceAmt | 0 | 7604275889 |
| IRS990ScheduleD/CYEndwmtFundGrp/ContributionsAmt | 0 | 922502751 |
| IRS990ScheduleD/CYEndwmtFundGrp/EndYearBalanceAmt | 0 | 6959777586 |
| IRS990ScheduleD/CYEndwmtFundGrp/InvestmentEarningsOrLossesAmt | 0 | -1289785980 |
| IRS990ScheduleD/CYEndwmtFundGrp/OtherExpendituresAmt | 0 | 244274464 |
| IRS990ScheduleD/CYMinus1YrEndwmtFundGrp/AdministrativeExpensesAmt | 0 | 33825289 |
| IRS990ScheduleD/CYMinus1YrEndwmtFundGrp/BeginningYearBalanceAmt | 0 | 6439293038 |
| IRS990ScheduleD/CYMinus1YrEndwmtFundGrp/ContributionsAmt | 0 | 531735265 |
| IRS990ScheduleD/CYMinus1YrEndwmtFundGrp/EndYearBalanceAmt | 0 | 7604275889 |
| IRS990ScheduleD/CYMinus1YrEndwmtFundGrp/InvestmentEarningsOrLossesAmt | 0 | 902539405 |
| IRS990ScheduleD/CYMinus1YrEndwmtFundGrp/OtherExpendituresAmt | 0 | 235466530 |
| IRS990ScheduleD/CYMinus2YrEndwmtFundGrp/AdministrativeExpensesAmt | 0 | 25475579 |
| IRS990ScheduleD/CYMinus2YrEndwmtFundGrp/BeginningYearBalanceAmt | 0 | 5388981777 |
| IRS990ScheduleD/CYMinus2YrEndwmtFundGrp/ContributionsAmt | 0 | 379241222 |
| IRS990ScheduleD/CYMinus2YrEndwmtFundGrp/EndYearBalanceAmt | 0 | 6439293038 |
| IRS990ScheduleD/CYMinus2YrEndwmtFundGrp/InvestmentEarningsOrLossesAmt | 0 | 890898065 |
| IRS990ScheduleD/CYMinus2YrEndwmtFundGrp/OtherExpendituresAmt | 0 | 194352447 |
| IRS990ScheduleD/CYMinus3YrEndwmtFundGrp/AdministrativeExpensesAmt | 0 | 23507800 |
| IRS990ScheduleD/CYMinus3YrEndwmtFundGrp/BeginningYearBalanceAmt | 0 | 4315692534 |
| IRS990ScheduleD/CYMinus3YrEndwmtFundGrp/ContributionsAmt | 0 | 336331082 |
| IRS990ScheduleD/CYMinus3YrEndwmtFundGrp/EndYearBalanceAmt | 0 | 5388981777 |
| IRS990ScheduleD/CYMinus3YrEndwmtFundGrp/InvestmentEarningsOrLossesAmt | 0 | 930706799 |
| IRS990ScheduleD/CYMinus3YrEndwmtFundGrp/OtherExpendituresAmt | 0 | 170240838 |
| IRS990ScheduleD/CYMinus4YrEndwmtFundGrp/AdministrativeExpensesAmt | 0 | 10254984 |
| IRS990ScheduleD/CYMinus4YrEndwmtFundGrp/BeginningYearBalanceAmt | 0 | 0 |
| IRS990ScheduleD/CYMinus4YrEndwmtFundGrp/ContributionsAmt | 0 | 4708318338 |
| IRS990ScheduleD/CYMinus4YrEndwmtFundGrp/EndYearBalanceAmt | 0 | 4315692534 |
| IRS990ScheduleD/CYMinus4YrEndwmtFundGrp/InvestmentEarningsOrLossesAmt | 0 | -382370820 |
| IRS990ScheduleD/EndowmentsHeldRelatedOrgInd | 0 | false |
| IRS990ScheduleD/EndowmentsHeldUnrelatedOrgInd | 0 | false |
| IRS990ScheduleD/ExpensesNotReportedAmt | 0 | 5271300 |
| IRS990ScheduleD/ExpensesNotRptFinclStmtAmt | 0 | 244274464 |
| IRS990ScheduleD/ExpensesSubtotalAmt | 0 | 32940610 |
| IRS990ScheduleD/LandGrp/BookValueAmt | 0 | 301384590 |
| IRS990ScheduleD/LandGrp/InvestmentCostOrOtherBasisAmt | 0 | 301384590 |
| IRS990ScheduleD/NetUnrealizedGainsInvstAmt | 0 | -720585135 |
| IRS990ScheduleD/OtherExpensesIncludedAmt | 0 | 5271300 |
| IRS990ScheduleD/OtherExpensesNotIncludedAmt | 0 | 244274464 |
| IRS990ScheduleD/OtherRevenueAmt | 0 | 0 |
| IRS990ScheduleD/OtherRevenuesNotIncludedAmt | 0 | 917231450 |
| IRS990ScheduleD/OtherSecuritiesGrp/BookValueAmt | 0 | 1829169543 |
| IRS990ScheduleD/OtherSecuritiesGrp/BookValueAmt | 1 | 4607704580 |
| IRS990ScheduleD/OtherSecuritiesGrp/Desc | 0 | CLOSELY HELD STOCK |
| IRS990ScheduleD/OtherSecuritiesGrp/Desc | 1 | LP OR LLP INTEREST |
| IRS990ScheduleD/OtherSecuritiesGrp/MethodValuationCd | 0 | F |
| IRS990ScheduleD/OtherSecuritiesGrp/MethodValuationCd | 1 | F |
| IRS990ScheduleD/PrmnntEndowmentBalanceEOYPct | 0 | 1.0 |
| IRS990ScheduleD/RevenueNotReportedAmt | 0 | -720585135 |
| IRS990ScheduleD/RevenueNotReportedFinclStmtAmt | 0 | 917231450 |
| IRS990ScheduleD/RevenueSubtotalAmt | 0 | 243429036 |
| IRS990ScheduleD/SupplementalInformationDetail/ExplanationTxt | 0 | TO BE USED FOR THE CHARITABLE PURPOSES OF THE UNDERLYING INVESTORS. |
| IRS990ScheduleD/SupplementalInformationDetail/ExplanationTxt | 1 | RENTAL EXPENSES - -5271301 SALE OF FUND UNITS - XXX-XX-XXXX |
| IRS990ScheduleD/SupplementalInformationDetail/ExplanationTxt | 2 | RENTAL EXPENSES - 5271300 |
| IRS990ScheduleD/SupplementalInformationDetail/ExplanationTxt | 3 | DISTRIBUTION TO UNITHOLDERS - XXX-XX-XXXX |
| IRS990ScheduleD/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | Schedule D, Part V, Line 4 Intended uses of endowment funds |
| IRS990ScheduleD/SupplementalInformationDetail/FormAndLineReferenceDesc | 1 | Schedule D, Part XI, Line 4(b) Other revenues in form 990 not in audited financial statements |
| IRS990ScheduleD/SupplementalInformationDetail/FormAndLineReferenceDesc | 2 | Schedule D, Part XII, Line 2(d) Other expenses in audited financial statements not in form 990 |
| IRS990ScheduleD/SupplementalInformationDetail/FormAndLineReferenceDesc | 3 | Schedule D, Part XII, Line 4(b) Other expenses in form 990 not in audited financial statements |
| IRS990ScheduleD/TermEndowmentBalanceEOYPct | 0 | 0.0 |
| IRS990ScheduleD/TotalBookValueLandBuildingsAmt | 0 | 301384590 |
| IRS990ScheduleD/TotalBookValueSecuritiesAmt | 0 | 6436874123 |
| IRS990ScheduleD/TotalExpensesPerForm990Amt | 0 | 277215074 |
| IRS990ScheduleD/TotalRevenuePerForm990Amt | 0 | 1160660486 |
| IRS990ScheduleD/TotalRevEtcAuditedFinclStmtAmt | 0 | -477156099 |
| IRS990ScheduleD/TotExpnsEtcAuditedFinclStmtAmt | 0 | 38211910 |
| IRS990ScheduleF/AccountActivitiesOutsideUSGrp/EmployeeCnt | 0 | 0 |
| IRS990ScheduleF/AccountActivitiesOutsideUSGrp/EmployeeCnt | 1 | 0 |
| IRS990ScheduleF/AccountActivitiesOutsideUSGrp/EmployeeCnt | 2 | 0 |
| IRS990ScheduleF/AccountActivitiesOutsideUSGrp/EmployeeCnt | 3 | 0 |
| IRS990ScheduleF/AccountActivitiesOutsideUSGrp/OfficesCnt | 0 | 0 |
| IRS990ScheduleF/AccountActivitiesOutsideUSGrp/OfficesCnt | 1 | 0 |
| IRS990ScheduleF/AccountActivitiesOutsideUSGrp/OfficesCnt | 2 | 0 |
| IRS990ScheduleF/AccountActivitiesOutsideUSGrp/OfficesCnt | 3 | 1 |
| IRS990ScheduleF/AccountActivitiesOutsideUSGrp/RegionTotalExpendituresAmt | 0 | 1638523381 |
| IRS990ScheduleF/AccountActivitiesOutsideUSGrp/RegionTotalExpendituresAmt | 1 | 27615664 |
| IRS990ScheduleF/AccountActivitiesOutsideUSGrp/RegionTotalExpendituresAmt | 2 | 2974464805 |
| IRS990ScheduleF/AccountActivitiesOutsideUSGrp/RegionTotalExpendituresAmt | 3 | 32940611 |
| IRS990ScheduleF/AccountActivitiesOutsideUSGrp/RegionTxt | 0 | Europe (Including Iceland and Greenland) |
| IRS990ScheduleF/AccountActivitiesOutsideUSGrp/RegionTxt | 1 | Sub-Saharan Africa |
| IRS990ScheduleF/AccountActivitiesOutsideUSGrp/RegionTxt | 2 | Central America and the Caribbean |
| IRS990ScheduleF/AccountActivitiesOutsideUSGrp/RegionTxt | 3 | Europe (Including Iceland and Greenland) |
| IRS990ScheduleF/AccountActivitiesOutsideUSGrp/SpecificServicesProvidedTxt | 0 | MANAGEMENT & GENERAL |
| IRS990ScheduleF/AccountActivitiesOutsideUSGrp/TypeOfActivitiesConductedTxt | 0 | Investments |
| IRS990ScheduleF/AccountActivitiesOutsideUSGrp/TypeOfActivitiesConductedTxt | 1 | Investments |
| IRS990ScheduleF/AccountActivitiesOutsideUSGrp/TypeOfActivitiesConductedTxt | 2 | Investments |
| IRS990ScheduleF/AccountActivitiesOutsideUSGrp/TypeOfActivitiesConductedTxt | 3 | Program Services |
| IRS990ScheduleF/BoycottCountriesInd | 0 | false |
| IRS990ScheduleF/ContinuationSpentAmt | 0 | 0 |
| IRS990ScheduleF/ContinuationTotalEmployeeCnt | 0 | 0 |
| IRS990ScheduleF/ContinuationTotalOfficeCnt | 0 | 0 |
| IRS990ScheduleF/ForeignCorpOwnershipInd | 0 | true |
| IRS990ScheduleF/ForeignPartnershipInd | 0 | true |
| IRS990ScheduleF/InterestInForeignTrustInd | 0 | false |
| IRS990ScheduleF/PassiveForeignInvestmestCoInd | 0 | true |
| IRS990ScheduleF/SubtotalEmployeesCnt | 0 | 0 |
| IRS990ScheduleF/SubtotalOfficesCnt | 0 | 1 |
| IRS990ScheduleF/SubtotalSpentAmt | 0 | 4673544461 |
| IRS990ScheduleF/SupplementalInformationDetail/ExplanationTxt | 0 | CENTRAL AMERICA AND THE CARIBBEA; EUROPE (INCLUDING ICELAND AND GREENLAND; SUB-SAHARAN AFRIC |
| IRS990ScheduleF/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | Schedule F, Part I, Line 3 Method used to account for expenditures on org's financial statements |
| IRS990ScheduleF/TotalEmployeeCnt | 0 | 0 |
| IRS990ScheduleF/TotalOfficeCnt | 0 | 1 |
| IRS990ScheduleF/TotalSpentAmt | 0 | 4673544461 |
| IRS990ScheduleF/TransferToForeignCorpInd | 0 | false |
| IRS990/ScheduleJRequiredInd | 0 | false |
| IRS990/ScheduleORequiredInd | 0 | true |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 0 | DUE TO CHARACTER LIMITATIONS ON THE ELECTRONIC FILING SOFTWARE, THE FULL PHONE NUMBER WOULD NOT PRINT. THIS NUMBER IS ALSO THE NUMBER FOR PART VI, LINE 20, TO REACH THE INVIDIVUAL OF WHOM THE BOOKS ARE IN CARE. THE PHONE NUMBER IS AS FOLLOWS: +44 (0)1865 632900 |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 1 | THE FINANCIAL STATEMENTS OF THE OXFORD FUNDS: ENDOWMENT MASTER ("ENDOWMENT MASTER") ARE PRESENTED IN GREAT BRITISH POUNDS. THE AMOUNTS REPORTED ON PART X OF THE FORM 990 WERE CONVERTED FROM GREAT BRITISH POUNDS TO US DOLLARS USING THE SPOT CONVERSATION RATE OF 12/31/2022 OF 1.2098. THE AMOUNTS REPORTED ON PARTS VII, VIII, AND IX OF THE FORM 990 WERE CONVERTED FROM GREAT BRITISH POUNDS TO US DOLLARS USING THE AVERAGE CONVERSION RATE FOR THE YEAR ENDED 12/31/2022 OF 1.2366. THE FOREIGN CURRENCY CONVERSION RESULTS IN AN ADJUSTING ITEM TO THE FUNDS'S CHANGE IN NET ASSETS FOR THE PERIOD WHICH IS REPORTED ON FORM 990, PART XI, LINE 9. THE NONSTATUTORY FINANCIAL STATEMENTS HAVE BEEN PREPARED UNDER THE HISTORICAL-COST BASIS, AS MODIFIED BY THE REVALUATION OF INVESTMENTS, IN ACCORDANCE WITH APPLICABLE UNITED KINGDOM ACCOUNTING STANDARDS. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 2 | ENDOWMENT MASTER HAS NO OFFICERS OR DIRECTORS. THE SOLE TRUSTEE OF ENDOWMENT MASTER, AS REQUIRED UNDER UNITED KINGDOM LAW, IS TOF CORPORATE TRUSTEE LIMITED, AN INDIRECT SUBSIDIARY OF THE UNIVERSITY OF OXFORD, AN ORGANIZATION RECOGNIZED AS TAX-EXEMPT UNDER SECTION 501(C)(3) BY THE INTERNAL REVENUE SERVICE. INVESTMENT MANAGEMENT ACTIVITIES OF ENDOWMENT MASTER ARE SUBJECT TO OVERSIGHT BY THE UNIVERSITY'S INVESTMENT COMMITTEE. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 3 | ENDOWMENT MASTER HAS NO OFFICERS OR DIRECTORS. TOF CORPORATE TRUSTEE LIMITED, ENDOWMENT MASTER'S SOLE TRUSTEE, MANAGES THE FUNDS THROUGH OUEM. MEETINGS OF THE GOVERNING BODY AND COMMITTEES ARE REGULARLY AND CONTEMPORANEOUSLY DOCUMENTED IN ACCORDANCE WITH THE REQUIREMENTS OF UNITED KINGDOM LAW. |
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