v3.25.1
Average Annual Total Returns
 12 Months Ended 60 Months Ended 120 Months Ended 357 Months Ended
Apr. 29, 2025
Dec. 31, 2024
Dec. 31, 2024
Dec. 31, 2024
Dec. 31, 2024
TIFF Multi-Asset Fund          
Prospectus [Line Items]          
Average Annual Return, Label [Optional Text] Return Before Taxes        
Average Annual Return, Percent   14.84% 8.63% 6.91% 7.72%
Performance Inception Date Mar. 31, 1995        
65/35 Mix (65% MSCI All Country World Index, 35% Bloomberg US Aggregate Bond Index) (does not reflect fees, expenses, or taxes)          
Prospectus [Line Items]          
Average Annual Return, Label [Optional Text] 65/35 Mix (65% MSCI All Country World Index, 35% Bloomberg US Aggregate Bond Index) (does not reflect fees, expenses, or taxes)        
Average Annual Return, Percent   11.60% 6.57% 6.62% 6.85%
Consumer Price Index (“CPI”) + 5% per annum (does not reflect fees, expenses, or taxes)          
Prospectus [Line Items]          
Average Annual Return, Label [Optional Text] Consumer Price Index (“CPI”) + 5% per annum (does not reflect fees, expenses, or taxes)        
Average Annual Return, Percent 7.61% 8.02% 9.38% 8.13%  
MSCI All Country World Index (does not reflect fees, expenses, or taxes)          
Prospectus [Line Items]          
Average Annual Return, Label [Optional Text] MSCI All Country World Index (does not reflect fees, expenses, or taxes)        
Average Annual Return, Percent 7.68% 17.49% 10.05% 9.22%  
Bloomberg US Aggregate Bond Index (does not reflect fees, expenses or taxes)          
Prospectus [Line Items]          
Average Annual Return, Label [Optional Text] Bloomberg US Aggregate Bond Index (does not reflect fees, expenses or taxes)        
Average Annual Return, Percent 4.42% 1.25% (0.33%) 1.35%