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Label Element Value
Risk/Return: rr_RiskReturnAbstract  
Prospectus Date rr_ProspectusDate Apr. 27, 2012
TIFF Short-Term Fund (Prospectus Summary): | TIFF Short-Term Fund
  
Risk/Return: rr_RiskReturnAbstract  
Risk/Return, Heading rr_RiskReturnHeading TIFF Short-Term Fund  
Supplement Text ck0000916622_SupplementTextBlock

TIFF Investment Program, Inc. (“TIP”)

Supplement dated April 27, 2012

to the Prospectus dated April 27, 2012

 

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.

 
Performance, Past Does Not Indicate Future rr_PerformancePastDoesNotIndicateFuture Past performance (before and after taxes) is not necessarily an indication of how the funds will perform in the future. 
Performance Table, Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the effect of state and local taxes.  
Performance Table, Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred Actual after-tax returns depend upon a member’s tax situation and may differ from those shown.
Performance Table, Heading rr_PerformanceTableHeading Average Annual Total Returns (for periods ended 12/31/11)
Performance Table, Narrative rr_PerformanceTableNarrativeTextBlock

The table below illustrates the changes in the funds’ yearly performance and shows how each fund’s average returns for one year, five years, ten years, and since fund inception, which reflect the deduction of entry and exit fees from a member’s account, compared with selected benchmarks. Past performance (before and after taxes) is not necessarily an indication of how the funds will perform in the future.  After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the effect of state and local taxes.  Actual after-tax returns depend upon a member’s tax situation and may differ from those shown.

 
TIFF Short-Term Fund | TIFF Short-Term Fund
  
Risk/Return: rr_RiskReturnAbstract  
Average Annual Returns, Label rr_AverageAnnualReturnLabel Return before Taxes
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 none
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 1.63%
Average Annual Returns, 10 Years rr_AverageAnnualReturnYear10 1.97%
Average Annual Returns, Since Inception rr_AverageAnnualReturnSinceInception 3.54%
Average Annual Returns, Inception Date rr_AverageAnnualReturnInceptionDate May 31, 1994
TIFF Short-Term Fund | After Taxes on Distributions
  
Risk/Return: rr_RiskReturnAbstract  
Average Annual Returns, Label rr_AverageAnnualReturnLabel Return after Taxes on Distributions
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 none
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 1.17%
Average Annual Returns, 10 Years rr_AverageAnnualReturnYear10 1.23%
Average Annual Returns, Since Inception rr_AverageAnnualReturnSinceInception 2.16%
Average Annual Returns, Inception Date rr_AverageAnnualReturnInceptionDate May 31, 1994
TIFF Short-Term Fund | After Taxes on Distributions and Sales
  
Risk/Return: rr_RiskReturnAbstract  
Average Annual Returns, Label rr_AverageAnnualReturnLabel Return after Taxes on Distributions and Sale of Fund Shares
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 none
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 1.13%
Average Annual Returns, 10 Years rr_AverageAnnualReturnYear10 1.24%
Average Annual Returns, Since Inception rr_AverageAnnualReturnSinceInception 2.17%
Average Annual Returns, Inception Date rr_AverageAnnualReturnInceptionDate May 31, 1994
TIFF Short-Term Fund | BofA Merrill Lynch US 6-Month Treasury Bill Index (does not reflect fees, expenses, or taxes)
  
Risk/Return: rr_RiskReturnAbstract  
Average Annual Returns, Label rr_AverageAnnualReturnLabel BofA Merrill Lynch US 6-Month Treasury Bill Index (does not reflect fees, expenses, or taxes)
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 0.27%
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 2.06%
Average Annual Returns, 10 Years rr_AverageAnnualReturnYear10 2.29%
Average Annual Returns, Since Inception rr_AverageAnnualReturnSinceInception 3.68%
TIFF Short-Term Fund | BofA Merrill Lynch US 6-Month Treasury Bill Index minus 50 basis points (does not reflect taxes)
  
Risk/Return: rr_RiskReturnAbstract  
Average Annual Returns, Label rr_AverageAnnualReturnLabel BofA Merrill Lynch US 6-Month Treasury Bill Index minus 50 basis points (does not reflect taxes)
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 (0.23%)
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 1.55%
Average Annual Returns, 10 Years rr_AverageAnnualReturnYear10 1.78%
Average Annual Returns, Since Inception rr_AverageAnnualReturnSinceInception 3.16%