v3.26.1
Shareholder Report, Average Annual Return (Details)
8 Months Ended 12 Months Ended 60 Months Ended 76 Months Ended 98 Months Ended 120 Months Ended
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
C000090895            
Average Annual Return [Line Items]            
Line Graph and Table Measure Name   Class A        
Average Annual Return, Percent   1.80% 9.64%     6.54%
C000090897            
Average Annual Return [Line Items]            
Line Graph and Table Measure Name   Class I        
C000090898            
Average Annual Return [Line Items]            
Line Graph and Table Measure Name   Class Y        
C000024992            
Average Annual Return [Line Items]            
Line Graph and Table Measure Name   Class A        
Average Annual Return, Percent   22.77% (2.31%)     4.37%
C000033045            
Average Annual Return [Line Items]            
Line Graph and Table Measure Name   Class I        
C000088110            
Average Annual Return [Line Items]            
Line Graph and Table Measure Name   Class Y        
C000214759            
Average Annual Return [Line Items]            
Line Graph and Table Measure Name   Class Z        
C000024996            
Average Annual Return [Line Items]            
Line Graph and Table Measure Name   Class A        
Average Annual Return, Percent   28.28% 8.84%     7.27%
C000033047            
Average Annual Return [Line Items]            
Line Graph and Table Measure Name   Class I        
C000088112            
Average Annual Return [Line Items]            
Line Graph and Table Measure Name   Class Y        
C000024994            
Average Annual Return [Line Items]            
Line Graph and Table Measure Name   Class A        
Average Annual Return, Percent   150.57% 18.43%     20.79%
C000024995            
Average Annual Return [Line Items]            
Line Graph and Table Measure Name   Class C        
Average Annual Return, Percent   162.77% 18.91%     20.58%
C000033046            
Average Annual Return [Line Items]            
Line Graph and Table Measure Name   Class I        
C000088111            
Average Annual Return [Line Items]            
Line Graph and Table Measure Name   Class Y        
C000117963            
Average Annual Return [Line Items]            
Line Graph and Table Measure Name   Fund        
C000195045            
Average Annual Return [Line Items]            
Line Graph and Table Measure Name   Class I        
C000195046            
Average Annual Return [Line Items]            
Line Graph and Table Measure Name   Class Z        
C000259178            
Average Annual Return [Line Items]            
Line Graph and Table Measure Name   Fund        
Without Sales Load [Member] | C000090895            
Average Annual Return [Line Items]            
Average Annual Return, Percent   8.01% 10.94%     7.17%
Without Sales Load [Member] | C000090897            
Average Annual Return [Line Items]            
Average Annual Return, Percent   8.32% 11.26%     7.48%
Without Sales Load [Member] | C000090898            
Average Annual Return [Line Items]            
Average Annual Return, Percent   8.28% 11.22%     7.42%
Without Sales Load [Member] | C000024992            
Average Annual Return [Line Items]            
Average Annual Return, Percent   30.26% (1.15%)     4.99%
Without Sales Load [Member] | C000033045            
Average Annual Return [Line Items]            
Average Annual Return, Percent   31.00% (0.61%)     5.53%
Without Sales Load [Member] | C000088110            
Average Annual Return [Line Items]            
Average Annual Return, Percent   30.93% (0.71%)     5.43%
Without Sales Load [Member] | C000214759            
Average Annual Return [Line Items]            
Average Annual Return, Percent   31.05% (0.52%) 3.26%    
Without Sales Load [Member] | C000024996            
Average Annual Return [Line Items]            
Average Annual Return, Percent   36.11% 10.14%     7.90%
Without Sales Load [Member] | C000033047            
Average Annual Return [Line Items]            
Average Annual Return, Percent   36.67% 10.61%     8.36%
Without Sales Load [Member] | C000088112            
Average Annual Return [Line Items]            
Average Annual Return, Percent   36.43% 10.41%     8.17%
Without Sales Load [Member] | C000024994            
Average Annual Return [Line Items]            
Average Annual Return, Percent   165.86% 19.84%     21.50%
Without Sales Load [Member] | C000024995            
Average Annual Return [Line Items]            
Average Annual Return, Percent   163.77% 18.91%     20.58%
Without Sales Load [Member] | C000033046            
Average Annual Return [Line Items]            
Average Annual Return, Percent   166.63% 20.31%     21.98%
Without Sales Load [Member] | C000088111            
Average Annual Return [Line Items]            
Average Annual Return, Percent   166.62% 20.22%     21.86%
Without Sales Load [Member] | C000117963            
Average Annual Return [Line Items]            
Average Annual Return, Percent   19.04% 3.87%     5.49%
Without Sales Load [Member] | C000195045            
Average Annual Return [Line Items]            
Average Annual Return, Percent   13.12% 12.04%   13.70%  
Without Sales Load [Member] | C000195046            
Average Annual Return [Line Items]            
Average Annual Return, Percent   13.23% 12.14%   13.81%  
Without Sales Load [Member] | C000259178            
Average Annual Return [Line Items]            
Average Annual Return, Percent 32.22%          
S&P 500 Index            
Average Annual Return [Line Items]            
Line Graph and Table Measure Name   S&P 500 Index        
Average Annual Return, Percent   17.88% 14.42%     14.82%
S&P 500 Index            
Average Annual Return [Line Items]            
Line Graph and Table Measure Name   S&P 500 Index        
Average Annual Return, Percent   17.88% 14.42%     14.82%
S&P 500 Index            
Average Annual Return [Line Items]            
Line Graph and Table Measure Name   S&P 500 Index        
Average Annual Return, Percent   17.88% 14.42%     14.82%
MSCI Emerging Markets IMI Index            
Average Annual Return [Line Items]            
Line Graph and Table Measure Name   MSCI Emerging Markets IMI Index        
Average Annual Return, Percent   31.38% 4.66%     8.37%
MSCI Emerging Markets IMI Index            
Average Annual Return [Line Items]            
Line Graph and Table Measure Name   MSCI Emerging Markets IMI Index        
Average Annual Return, Percent   31.38% 4.66%     8.37%
MSCI Emerging Markets IMI Index            
Average Annual Return [Line Items]            
Line Graph and Table Measure Name   MSCI Emerging Markets IMI Index        
Average Annual Return, Percent   31.38% 4.66%     8.37%
MSCI Emerging Markets IMI Index            
Average Annual Return [Line Items]            
Line Graph and Table Measure Name   MSCI Emerging Markets IMI Index        
Average Annual Return, Percent   31.38% 4.66% 7.98%    
MSCI ACWI Index            
Average Annual Return [Line Items]            
Line Graph and Table Measure Name   MSCI ACWI Index        
Average Annual Return, Percent   22.34% 11.19%     11.72%
MSCI ACWI Index            
Average Annual Return [Line Items]            
Line Graph and Table Measure Name   MSCI ACWI Index        
Average Annual Return, Percent   22.34% 11.19%     11.72%
MSCI ACWI Index            
Average Annual Return [Line Items]            
Line Graph and Table Measure Name   MSCI ACWI Index        
Average Annual Return, Percent   22.34% 11.19%     11.72%
MSCI ACWI Index            
Average Annual Return [Line Items]            
Line Graph and Table Measure Name   MSCI ACWI Index        
Average Annual Return, Percent   22.34% 11.19%     11.72%
MSCI ACWI Index            
Average Annual Return [Line Items]            
Line Graph and Table Measure Name   MSCI ACWI Index        
Average Annual Return, Percent   22.34% 11.19%     11.72%
MSCI ACWI Index            
Average Annual Return [Line Items]            
Line Graph and Table Measure Name   MSCI ACWI Index        
Average Annual Return, Percent   22.34% 11.19%     11.72%
MSCI ACWI Index            
Average Annual Return [Line Items]            
Line Graph and Table Measure Name   MSCI ACWI Index        
Average Annual Return, Percent   22.34% 11.19%     11.72%
ICE BofA Global Broad Market Plus Index            
Average Annual Return [Line Items]            
Line Graph and Table Measure Name   ICE BofA Global Broad Market Plus Index        
Average Annual Return, Percent   8.05% (2.41%)     1.11%
S&P 500 Index            
Average Annual Return [Line Items]            
Line Graph and Table Measure Name   S&P 500 Index        
Average Annual Return, Percent   17.88% 14.42%   14.54%  
S&P 500 Index            
Average Annual Return [Line Items]            
Line Graph and Table Measure Name   S&P 500 Index        
Average Annual Return, Percent   17.88% 14.42%   14.54%  
MSCI ACWI Index            
Average Annual Return [Line Items]            
Line Graph and Table Measure Name   MSCI ACWI Index        
Average Annual Return, Percent 17.42%          
UBS CM Commodity Index            
Average Annual Return [Line Items]            
Line Graph and Table Measure Name   UBS CM Commodity Index        
Average Annual Return, Percent   9.55% 12.63%     8.71%
UBS CM Commodity Index            
Average Annual Return [Line Items]            
Line Graph and Table Measure Name   UBS CM Commodity Index        
Average Annual Return, Percent   9.55% 12.63%     8.71%
UBS CM Commodity Index            
Average Annual Return [Line Items]            
Line Graph and Table Measure Name   UBS CM Commodity Index        
Average Annual Return, Percent   9.55% 12.63%     8.71%
S&P Global Natural Resources Index            
Average Annual Return [Line Items]            
Line Graph and Table Measure Name   S&P Global Natural Resources Index        
Average Annual Return, Percent   28.86% 10.61%     10.38%
S&P Global Natural Resources Index            
Average Annual Return [Line Items]            
Line Graph and Table Measure Name   S&P Global Natural Resources Index        
Average Annual Return, Percent   28.86% 10.61%     10.38%
S&P Global Natural Resources Index            
Average Annual Return [Line Items]            
Line Graph and Table Measure Name   S&P Global Natural Resources Index        
Average Annual Return, Percent   28.86% 10.61%     10.38%
NYSE Arca Gold Miners Index            
Average Annual Return [Line Items]            
Line Graph and Table Measure Name   NYSE Arca Gold Miners Index        
Average Annual Return, Percent   158.28% 21.22%     21.83%
NYSE Arca Gold Miners Index            
Average Annual Return [Line Items]            
Line Graph and Table Measure Name   NYSE Arca Gold Miners Index        
Average Annual Return, Percent   158.28% 21.22%     21.83%
NYSE Arca Gold Miners Index            
Average Annual Return [Line Items]            
Line Graph and Table Measure Name   NYSE Arca Gold Miners Index        
Average Annual Return, Percent   158.28% 21.22%     21.83%
NYSE Arca Gold Miners Index            
Average Annual Return [Line Items]            
Line Graph and Table Measure Name   NYSE Arca Gold Miners Index        
Average Annual Return, Percent   158.28% 21.22%     21.83%
50% GBI-EM 50% EMBI            
Average Annual Return [Line Items]            
Line Graph and Table Measure Name   50% GBI-EM 50% EMBI        
Average Annual Return, Percent   16.80% 1.50%     4.20%
Morningstar® Wide Moat Focus Index            
Average Annual Return [Line Items]            
Line Graph and Table Measure Name   Morningstar<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Wide Moat Focus Index        
Average Annual Return, Percent   13.80% 12.71%   14.41%  
Morningstar® Wide Moat Focus Index            
Average Annual Return [Line Items]            
Line Graph and Table Measure Name   Morningstar<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Wide Moat Focus Index        
Average Annual Return, Percent   13.80% 12.71%   14.41%  
MVIS® Global Digital Assets Equity Index            
Average Annual Return [Line Items]            
Line Graph and Table Measure Name   MVIS<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Global Digital Assets Equity Index        
Average Annual Return, Percent 28.79%