v3.25.4
Shareholder Report, Average Annual Return (Details)
 12 Months Ended 53 Months Ended 60 Months Ended 92 Months Ended 96 Months Ended 120 Months Ended
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
C000001642              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name Retail            
C000077805              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name Institutional            
C000174760              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name R6            
C000065146              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name Retail            
C000077806              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name Institutional            
C000174761              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name R6            
C000073358              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name Retail            
C000077807              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name Institutional            
C000174762              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name R6            
C000082256              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name Retail            
C000082257              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name Institutional            
C000165214              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name R6            
C000095861              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name Retail            
C000095862              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name Institutional            
C000165215              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name R6            
C000112440              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name Retail            
C000112441              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name Institutional            
C000174764              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name R6            
C000196927              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name Retail            
C000196928              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name Institutional            
C000196929              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name R6            
C000200241              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name R6            
C000200239              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name Retail            
C000200240              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name Institutional            
C000227029              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name Retail            
C000227030              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name Institutional            
C000227028              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name R6            
C000196932              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name Retail            
C000198571              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name TA Shares            
C000196933              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name Institutional            
Without Sales Load [Member] | C000001642              
Average Annual Return [Line Items]              
Average Annual Return, Percent 24.55%   12.29%       24.05%
Without Sales Load [Member] | C000077805              
Average Annual Return [Line Items]              
Average Annual Return, Percent 24.86%   12.58%       24.37%
Without Sales Load [Member] | C000174760              
Average Annual Return [Line Items]              
Average Annual Return, Percent 24.86%   12.58%       24.37%
Without Sales Load [Member] | C000065146              
Average Annual Return [Line Items]              
Average Annual Return, Percent 21.94%   11.39%       20.66%
Without Sales Load [Member] | C000077806              
Average Annual Return [Line Items]              
Average Annual Return, Percent 22.26%   11.68%       20.97%
Without Sales Load [Member] | C000174761              
Average Annual Return [Line Items]              
Average Annual Return, Percent 22.26%   11.68%       20.97%
Without Sales Load [Member] | C000073358              
Average Annual Return [Line Items]              
Average Annual Return, Percent 20.81%   1.43%       7.48%
Without Sales Load [Member] | C000077807              
Average Annual Return [Line Items]              
Average Annual Return, Percent 21.16%   1.68%       7.74%
Without Sales Load [Member] | C000174762              
Average Annual Return [Line Items]              
Average Annual Return, Percent 21.09%   1.68%       7.74%
Without Sales Load [Member] | C000082256              
Average Annual Return [Line Items]              
Average Annual Return, Percent 4.92%   5.38%       10.40%
Without Sales Load [Member] | C000082257              
Average Annual Return [Line Items]              
Average Annual Return, Percent 5.19%   5.65%       10.69%
Without Sales Load [Member] | C000165214              
Average Annual Return [Line Items]              
Average Annual Return, Percent 5.19%   5.65%       10.69%
Without Sales Load [Member] | C000095861              
Average Annual Return [Line Items]              
Average Annual Return, Percent 29.77%   0.91%       6.58%
Without Sales Load [Member] | C000095862              
Average Annual Return [Line Items]              
Average Annual Return, Percent 30.14%   1.16%       6.86%
Without Sales Load [Member] | C000165215              
Average Annual Return [Line Items]              
Average Annual Return, Percent 30.12%   1.16%       6.86%
Without Sales Load [Member] | C000112440              
Average Annual Return [Line Items]              
Average Annual Return, Percent 27.43%   (0.43%)       13.70%
Without Sales Load [Member] | C000112441              
Average Annual Return [Line Items]              
Average Annual Return, Percent 27.53%   (0.22%)       13.95%
Without Sales Load [Member] | C000174764              
Average Annual Return [Line Items]              
Average Annual Return, Percent 27.76%   (0.18%)       13.98%
Without Sales Load [Member] | C000196927              
Average Annual Return [Line Items]              
Average Annual Return, Percent 3.41%   5.45%     8.55%  
Without Sales Load [Member] | C000196928              
Average Annual Return [Line Items]              
Average Annual Return, Percent 3.74%   5.74%     8.79%  
Without Sales Load [Member] | C000196929              
Average Annual Return [Line Items]              
Average Annual Return, Percent 3.74%   5.73%     8.78%  
Without Sales Load [Member] | C000200241              
Average Annual Return [Line Items]              
Average Annual Return, Percent 10.29%   2.77% 10.73%      
Without Sales Load [Member] | C000200239              
Average Annual Return [Line Items]              
Average Annual Return, Percent 10.01%   2.51% 10.46%      
Without Sales Load [Member] | C000200240              
Average Annual Return [Line Items]              
Average Annual Return, Percent 10.28%   2.77% 10.74%      
Without Sales Load [Member] | C000227029              
Average Annual Return [Line Items]              
Average Annual Return, Percent (0.63%) (2.05%)          
Without Sales Load [Member] | C000227030              
Average Annual Return [Line Items]              
Average Annual Return, Percent (0.34%) (1.81%)          
Without Sales Load [Member] | C000227028              
Average Annual Return [Line Items]              
Average Annual Return, Percent (0.34%) (1.79%)          
Without Sales Load [Member] | C000196932              
Average Annual Return [Line Items]              
Average Annual Return, Percent 9.88%   5.02%   12.91%    
Without Sales Load [Member] | C000198571              
Average Annual Return [Line Items]              
Average Annual Return, Percent 10.21%   5.28%   13.18%    
Without Sales Load [Member] | C000196933              
Average Annual Return [Line Items]              
Average Annual Return, Percent 10.15%   5.28%     13.16%  
Baron Index: Russell 3000 Index              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name Russell 3000 Index            
Average Annual Return, Percent 17.15%   13.15%       14.29%
Baron Index: Russell 3000 Index              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name Russell 3000 Index            
Average Annual Return, Percent 17.15%   13.15%       14.29%
Baron Index: Russell 3000 Index              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name Russell 3000 Index            
Average Annual Return, Percent 17.15%   13.15%       14.29%
Baron Index: Russell 3000 Index              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name Russell 3000 Index            
Average Annual Return, Percent 17.15%   13.15%       14.29%
Baron Index: Russell 3000 Index              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name Russell 3000 Index            
Average Annual Return, Percent 17.15%   13.15%       14.29%
Baron Index: Russell 3000 Index              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name Russell 3000 Index            
Average Annual Return, Percent 17.15%   13.15%       14.29%
Baron Index: MSCI ACWI ex USA Index              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name MSCI ACWI ex USA Index            
Average Annual Return, Percent 32.39%   7.91%       8.41%
Baron Index: MSCI ACWI ex USA Index              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name MSCI ACWI ex USA Index            
Average Annual Return, Percent 32.39%   7.91%       8.41%
Baron Index: MSCI ACWI ex USA Index              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name MSCI ACWI ex USA Index            
Average Annual Return, Percent 32.39%   7.91%       8.41%
Baron Index: 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%
Baron Index: 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%
Baron Index: 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%
Baron Index: MSCI Emerging Markets Index              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name MSCI Emerging Markets Index            
Average Annual Return, Percent 33.57%   4.20%       8.42%
Baron Index: MSCI Emerging Markets Index              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name MSCI Emerging Markets Index            
Average Annual Return, Percent 33.57%   4.20%       8.42%
Baron Index: MSCI Emerging Markets Index              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name MSCI Emerging Markets Index            
Average Annual Return, Percent 33.57%   4.20%       8.42%
Baron Index: 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%
Baron Index: 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%
Baron Index: 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%
Baron Index: 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%     14.32%  
Baron Index: 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%     14.32%  
Baron Index: 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%     14.32%  
Baron Index: Russell 3000 Index              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name Russell 3000 Index            
Average Annual Return, Percent 17.15%   13.15% 14.32%      
Baron Index: Russell 3000 Index              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name Russell 3000 Index            
Average Annual Return, Percent 17.15%   13.15% 14.32%      
Baron Index: Russell 3000 Index              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name Russell 3000 Index            
Average Annual Return, Percent 17.15%   13.15% 14.32%      
Baron Index: MSCI Emerging Markets Index              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name MSCI Emerging Markets Index            
Average Annual Return, Percent 33.57% 4.70%          
Baron Index: MSCI Emerging Markets Index              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name MSCI Emerging Markets Index            
Average Annual Return, Percent 33.57% 4.70%          
Baron Index: MSCI Emerging Markets Index              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name MSCI Emerging Markets Index            
Average Annual Return, Percent 33.57% 4.70%          
Baron Index: 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%   14.33%    
Baron Index: 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%   14.33%    
Baron Index: 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%     14.32%  
Baron Index: Russell Midcap Growth Index              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name Russell Midcap Growth Index            
Average Annual Return, Percent 8.66%   6.65%       12.49%
Baron Index: Russell Midcap Growth Index              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name Russell Midcap Growth Index            
Average Annual Return, Percent 8.66%   6.65%       12.49%
Baron Index: Russell Midcap Growth Index              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name Russell Midcap Growth Index            
Average Annual Return, Percent 8.66%   6.65%       12.49%
Baron Index: Russell 2500 Growth Index              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name Russell 2500 Growth Index            
Average Annual Return, Percent 10.31%   2.98%       10.55%
Baron Index: Russell 2500 Growth Index              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name Russell 2500 Growth Index            
Average Annual Return, Percent 10.31%   2.98%       10.55%
Baron Index: Russell 2500 Growth Index              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name Russell 2500 Growth Index            
Average Annual Return, Percent 10.31%   2.98%       10.55%
Baron Index: MSCI ACWI ex USA IMI Growth Index              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name MSCI ACWI ex USA IMI Growth Index            
Average Annual Return, Percent 25.74%   4.03%       7.86%
Baron Index: MSCI ACWI ex USA IMI Growth Index              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name MSCI ACWI ex USA IMI Growth Index            
Average Annual Return, Percent 25.74%   4.03%       7.86%
Baron Index: MSCI ACWI ex USA IMI Growth Index              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name MSCI ACWI ex USA IMI Growth Index            
Average Annual Return, Percent 25.74%   4.03%       7.86%
Baron Index: MSCI USA IMI Extended Real Estate Index              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name MSCI USA IMI Extended Real Estate Index            
Average Annual Return, Percent 4.88%   8.64%       8.88%
Baron Index: MSCI US REIT Index              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name MSCI US REIT Index            
Average Annual Return, Percent 1.67%   5.35%       4.42%
Baron Index: MSCI USA IMI Extended Real Estate Index              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name MSCI USA IMI Extended Real Estate Index            
Average Annual Return, Percent 4.88%   8.64%       8.88%
Baron Index: MSCI US REIT Index              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name MSCI US REIT Index            
Average Annual Return, Percent 1.67%   5.35%       4.42%
Baron Index: MSCI USA IMI Extended Real Estate Index              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name MSCI USA IMI Extended Real Estate Index            
Average Annual Return, Percent 4.88%   8.64%       8.88%
Baron Index: MSCI US REIT Index              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name MSCI US REIT Index            
Average Annual Return, Percent 1.67%   5.35%       4.42%
Baron Index: MSCI Emerging Markets IMI Growth Index              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name MSCI Emerging Markets IMI Growth Index            
Average Annual Return, Percent 32.03%   2.36%       8.53%
Baron Index: MSCI Emerging Markets IMI Growth Index              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name MSCI Emerging Markets IMI Growth Index            
Average Annual Return, Percent 32.03%   2.36%       8.53%
Baron Index: MSCI Emerging Markets IMI Growth Index              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name MSCI Emerging Markets IMI Growth Index            
Average Annual Return, Percent 32.03%   2.36%       8.53%
Baron Index: MSCI ACWI Growth Index              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name MSCI ACWI Growth Index            
Average Annual Return, Percent 22.44%   11.12%       13.99%
Baron Index: MSCI ACWI Growth Index              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name MSCI ACWI Growth Index            
Average Annual Return, Percent 22.44%   11.12%       13.99%
Baron Index: MSCI ACWI Growth Index              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name MSCI ACWI Growth Index            
Average Annual Return, Percent 22.44%   11.12%       13.99%
Baron Index: MSCI US REIT Index              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name MSCI US REIT Index            
Average Annual Return, Percent 1.67%   5.35%     4.17%  
Baron Index: MSCI US REIT Index              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name MSCI US REIT Index            
Average Annual Return, Percent 1.67%   5.35%     4.17%  
Baron Index: MSCI US REIT Index              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name MSCI US REIT Index            
Average Annual Return, Percent 1.67%   5.35%     4.17%  
Baron Index: Russell 3000 Health Care Index              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name Russell 3000 Health Care Index            
Average Annual Return, Percent 14.56%   6.31% 9.98%      
Baron Index: Russell 3000 Health Care Index              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name Russell 3000 Health Care Index            
Average Annual Return, Percent 14.56%   6.31% 9.98%      
Baron Index: Russell 3000 Health Care Index              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name Russell 3000 Health Care Index            
Average Annual Return, Percent 14.56%   6.31% 9.98%      
Baron Index: MSCI AC Asia ex Japan/India Linked Index              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name MSCI AC Asia ex Japan/India Linked Index            
Average Annual Return, Percent 2.62% (3.46%)          
Baron Index: MSCI India Index              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name MSCI India Index            
Average Annual Return, Percent 2.62% 8.13%          
Baron Index: MSCI AC Asia ex Japan/India Linked Index              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name MSCI AC Asia ex Japan/India Linked Index            
Average Annual Return, Percent 2.62% (3.46%)          
Baron Index: MSCI India Index              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name MSCI India Index            
Average Annual Return, Percent 2.62% 8.13%          
Baron Index: MSCI AC Asia ex Japan/India Linked Index              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name MSCI AC Asia ex Japan/India Linked Index            
Average Annual Return, Percent 2.62% (3.46%)          
Baron Index: MSCI India Index              
Average Annual Return [Line Items]              
Line Graph and Table Measure Name MSCI India Index            
Average Annual Return, Percent 2.62% 8.13%          
Baron Index: 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%   10.77%    
Baron Index: 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%   10.77%    
Baron Index: 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%     10.76%