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S000057731 [Member] Average Annual Total Returns
 12 Months Ended 60 Months Ended 84 Months Ended 86 Months Ended
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Morningstar Municipal Bond Blended Index (reflects no deduction for fees, expenses, or taxes)        
Prospectus [Line Items]        
Average Annual Return, Percent [1] 4.08% 1.05% [2]  
Performance Inception Date [1],[2]     Jan. 01, 2019  
Bloomberg Municipal Bond Index (reflects no deduction for fees, expenses, or taxes)        
Prospectus [Line Items]        
Average Annual Return, Percent [3] 4.25% 0.80%   2.68% [2]
Performance Inception Date [2],[3]       Nov. 02, 2018
Institutional        
Prospectus [Line Items]        
Average Annual Return, Percent 3.43% 1.08%   2.46% [2]
Performance Inception Date [2]       Nov. 02, 2018
Institutional | After Taxes on Distributions        
Prospectus [Line Items]        
Average Annual Return, Percent 3.38% 1.04%   2.40% [2]
Performance Inception Date [2]       Nov. 02, 2018
Institutional | After Taxes on Distributions and Sales        
Prospectus [Line Items]        
Average Annual Return, Percent 3.37% 1.39%   2.43% [2]
Performance Inception Date [2]       Nov. 02, 2018
[1]
The Morningstar Municipal Bond Blended Index is composed of 70% Bloomberg Municipal Bond Index and 30% Bloomberg Municipal 1‑3 Year Bond Index. The Bloomberg U.S. Municipal Index covers the USD‑denominated long-term tax exempt bond market. The index has four main sectors: state and local general obligation bonds, revenue bonds, insured bonds and prerefunded bonds. . The Bloomberg Municipal 1‑3 Year Bond Index is an unmanaged index that consists of a broad selection of investment grade general obligation and revenue bonds of maturities ranging from one year to three years.
[2] Inception date for Morningstar Municipal Bond Blended Index is 1/1/2019.
[3]
The Bloomberg U.S. Municipal Index covers the USD‑denominated long-term tax exempt bond market. The index has four main sectors: state and local general obligation bonds, revenue bonds, insured bonds and prerefunded bonds. .