v3.26.1
S000057735 [Member] Average Annual Total Returns
 12 Months Ended 60 Months Ended 86 Months Ended
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Morningstar U.S. Cash T-Bill TR USD Index (reflects no deduction for fees, expenses, or taxes)      
Prospectus [Line Items]      
Average Annual Return, Percent [1] 4.33% 3.27% 2.71%
Performance Inception Date [1]     Nov. 02, 2018
Bloomberg U.S. Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes)      
Prospectus [Line Items]      
Average Annual Return, Percent [2] 7.30% (0.36%) 2.33%
Performance Inception Date [2]     Nov. 02, 2018
Institutional      
Prospectus [Line Items]      
Average Annual Return, Percent 6.41% 4.17% 4.25%
Performance Inception Date     Nov. 02, 2018
Institutional | After Taxes on Distributions      
Prospectus [Line Items]      
Average Annual Return, Percent 5.02% 2.68% 2.94%
Performance Inception Date     Nov. 02, 2018
Institutional | After Taxes on Distributions and Sales      
Prospectus [Line Items]      
Average Annual Return, Percent 3.84% 2.59% 2.75%
Performance Inception Date     Nov. 02, 2018
[1]
The Morningstar U.S. Cash T‑Bill TR USD Index measures the performance of a 6 to 8-week U.S. Treasury Bill, and is the index against which the Fund is primarily managed.
[2]
The Bloomberg U.S. Aggregate Bond Index is a broad-based securities market index that measures the investment grade, U.S.-dollar-denominated, fixed-rate, taxable bond market.