v3.26.1
Touchstone Strategic Income Fund Average Annual Total Returns
 12 Months Ended 53 Months Ended 60 Months Ended 120 Months Ended 131 Months Ended 381 Months Ended 386 Months Ended
Mar. 31, 2026
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
 [1]
Dec. 31, 2025
 [1]
Dec. 31, 2025
Bloomberg US Aggregate Bond Index (reflects no deduction for fees, expenses or taxes)[Member]                
Prospectus [Line Items]                
Average Annual Return, Percent   7.30%   (0.36%) 2.01%    
Performance Inception Date              
Class A                
Prospectus [Line Items]                
Average Annual Return, Percent   5.68%   1.74% 3.73%     [1]
Performance Inception Date Nov. 01, 1993              
Class A | After Taxes on Distributions                
Prospectus [Line Items]                
Average Annual Return, Percent   3.71%   0.10% 2.10%     [1]
Performance Inception Date              
Class A | After Taxes on Distributions and Sales                
Prospectus [Line Items]                
Average Annual Return, Percent   3.32%   0.59% 2.14%     [1]
Performance Inception Date              
Class C                
Prospectus [Line Items]                
Average Annual Return, Percent   7.54%   1.99% 3.49%    
Performance Inception Date Apr. 01, 1994              
Class Y                
Prospectus [Line Items]                
Average Annual Return, Percent   9.67%   3.02% 4.45%    
Performance Inception Date Jan. 29, 2015              
Institutional Class                
Prospectus [Line Items]                
Average Annual Return, Percent   9.44% 3.28%      
Performance Inception Date Jul. 19, 2021              
[1] Since Inception returns are not shown for classes with greater than ten years of performance history.