Label	Element	Value
TIFF Short-Term Fund
Risk/Return:	rr_RiskReturnAbstract
Supplement to Prospectus [Text Block]	rr_SupplementToProspectusTextBlock	TIFF Investment Program (“TIP”) Supplement dated April 30, 2021 to the Prospectus dated April 30, 2021 TIFF Short-Term Fund For members who are not non-profit organizations, the following supplements similar language under the heading Fund Performance — Average Annual Total Returns in each fund summary section of the prospectus.
Risk/Return [Heading]	rr_RiskReturnHeading	TIFF Short-Term Fund
Index No Deduction for Fees, Expenses, Taxes [Text]	rr_IndexNoDeductionForFeesExpensesTaxes	(does not reflect fees, expenses, or taxes)
TIFF Short-Term Fund \| BofA Merrill Lynch US 6-Month Treasury Bill Index (does not reflect fees, expenses, or taxes)
Risk/Return:	rr_RiskReturnAbstract
Label	rr_AverageAnnualReturnLabel	BofA Merrill Lynch US 6-Month Treasury Bill Index (does not reflect fees, expenses, or taxes)
1 Year	rr_AverageAnnualReturnYear01	1.05%
5 Years	rr_AverageAnnualReturnYear05	1.43%
10 Years	rr_AverageAnnualReturnYear10	0.81%
Since Inception	rr_AverageAnnualReturnSinceInception	2.72%
Inception Date	rr_AverageAnnualReturnInceptionDate	May 31, 1994
TIFF Short-Term Fund \| TIFF Short-Term Fund
Risk/Return:	rr_RiskReturnAbstract
Label	rr_AverageAnnualReturnLabel	Return before Taxes
1 Year	rr_AverageAnnualReturnYear01	0.54%
5 Years	rr_AverageAnnualReturnYear05	1.05%
10 Years	rr_AverageAnnualReturnYear10	0.48%
Since Inception	rr_AverageAnnualReturnSinceInception	2.51%
Inception Date	rr_AverageAnnualReturnInceptionDate	May 31, 1994
TIFF Short-Term Fund \| TIFF Short-Term Fund \| After Taxes on Distributions
Risk/Return:	rr_RiskReturnAbstract
Label	rr_AverageAnnualReturnLabel	Return after Taxes on Distributions
1 Year	rr_AverageAnnualReturnYear01	0.32%
5 Years	rr_AverageAnnualReturnYear05	0.62%
10 Years	rr_AverageAnnualReturnYear10	0.27%
Since Inception	rr_AverageAnnualReturnSinceInception	1.53%
TIFF Short-Term Fund \| TIFF Short-Term Fund \| After Taxes on Distributions and Sale of Fund Shares
Risk/Return:	rr_RiskReturnAbstract
Label	rr_AverageAnnualReturnLabel	Return after Taxes on Distributions and Sale of Fund Shares
1 Year	rr_AverageAnnualReturnYear01	0.32%
5 Years	rr_AverageAnnualReturnYear05	0.62%
10 Years	rr_AverageAnnualReturnYear10	0.28%
Since Inception	rr_AverageAnnualReturnSinceInception	1.53%

Return Before Taxes.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Form
-Number N-1A
-Chapter A
-Section 4
-Subsection b
-Paragraph 2
-Subparagraph instructions
-Clause 4

+ Details

Name:	rr_AverageAnnualReturnInceptionDate
Namespace Prefix:	rr_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

This item represents Average Annual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.

+ References