v3.24.4
Average Annual Total Returns
 12 Months Ended 44 Months Ended 49 Months Ended 60 Months Ended 69 Months Ended 114 Months Ended
Aug. 31, 2024
Dec. 31, 2023
Dec. 31, 2023
 [1]
Dec. 31, 2023
 [1]
Dec. 31, 2023
Dec. 31, 2023
Dec. 31, 2023
Class A, R6, & Y | Class A              
Prospectus [Line Items]              
Average Annual Return, Percent   5.28%     1.94% 1.52% [1]  
Performance Inception Date Apr. 02, 2018            
Class A, R6, & Y | Class A | After Taxes on Distributions              
Prospectus [Line Items]              
Average Annual Return, Percent   3.52%     1.18% 0.89%  
Class A, R6, & Y | Class A | After Taxes on Distributions and Sales              
Prospectus [Line Items]              
Average Annual Return, Percent   3.10%     1.16% 0.89%  
Class A, R6, & Y | Class Y              
Prospectus [Line Items]              
Average Annual Return, Percent   5.49%   1.62% 2.08% [1]    
Performance Inception Date Dec. 10, 2019            
Class A, R6, & Y | Class R6              
Prospectus [Line Items]              
Average Annual Return, Percent   5.49% 1.65%   2.12% [1]    
Performance Inception Date May 15, 2020            
Class A, R6, & Y | ICE BofA US Treasury Bill Index (reflects no deduction for fees, expenses or taxes)              
Prospectus [Line Items]              
Average Annual Return, Percent [2]   5.08%     1.90% 1.33%  
Class A, R6, & Y | Bloomberg U.S. Aggregate Bond Index (reflects no deduction for fees, expenses or taxes)              
Prospectus [Line Items]              
Average Annual Return, Percent   5.53%     1.10% 1.52%  
Institutional Class | Institutional Class              
Prospectus [Line Items]              
Average Annual Return, Percent   5.52%     2.09%   1.63%
Performance Inception Date Jul. 01, 2014            
Institutional Class | Institutional Class | After Taxes on Distributions              
Prospectus [Line Items]              
Average Annual Return, Percent   3.70%     1.28%   0.98%
Institutional Class | Institutional Class | After Taxes on Distributions and Sales              
Prospectus [Line Items]              
Average Annual Return, Percent   3.24%     1.25%   0.97%
Institutional Class | ICE BofA US Treasury Bill Index (reflects no deduction for fees, expenses or taxes)              
Prospectus [Line Items]              
Average Annual Return, Percent [3]   5.08%     1.90%   1.33%
Institutional Class | Bloomberg U.S. Aggregate Bond Index (reflects no deduction for fees, expenses or taxes)              
Prospectus [Line Items]              
Average Annual Return, Percent   5.53%     1.10%   1.52%
[1] Performance shown prior to the inception date is that of the Fund's Institutional Class shares. The inception date of the Fund's Institutional Class shares is July 1, 2014. Although invested in the same portfolio of securities, Class A, Class Y and Class R6 shares' returns of the Fund will be different from Institutional Class shares’ returns of the Fund as they have different expenses.
[2] Prior to July 1, 2022, index returns reflect no deduction for fees, expenses or taxes. Effective July 1, 2022, index returns reflect no deduction for taxes, but include transaction costs, which may be higher or lower than the actual transaction costs incurred by the Fund.
[3] Prior to July 1, 2022, index returns reflect no deduction for fees, expenses or taxes. Effective July 1, 2022, index returns reflect no deduction for taxes, but include transaction costs, which may be higher or lower than the actual transaction costs incurred by the Fund.