v3.26.1
S000024145 [Member] Average Annual Total Returns
12 Months Ended 60 Months Ended 120 Months Ended
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
MSCI® All Country World Index (reflects no deduction for fees, expenses, or taxes)      
Prospectus [Line Items]      
Average Annual Return, Percent 22.34% 11.19% 11.72%
FTSE EPRA Nareit Developed Index (reflects no deduction for fees, expenses, or taxes)      
Prospectus [Line Items]      
Average Annual Return, Percent 9.58% 2.76% 3.25%
MULTI-MANAGER GLOBAL REAL ESTATE FUND      
Prospectus [Line Items]      
Average Annual Return, Percent 5.59% 1.79% 3.53%
MULTI-MANAGER GLOBAL REAL ESTATE FUND | After Taxes on Distributions      
Prospectus [Line Items]      
Average Annual Return, Percent 4.30% 0.96% 1.96%
MULTI-MANAGER GLOBAL REAL ESTATE FUND | After Taxes on Distributions and Sales      
Prospectus [Line Items]      
Average Annual Return, Percent 3.30% 1.12% 2.15%