v3.26.1
Summary of Significant Accounting Policies - Additional Information (Details) - USD ($)
 6 Months Ended
Jun. 30, 2026
Dec. 31, 2025
Schedule Of Summary Of Significant Accounting Policies [Line Items]    
Percentage of foreign currency denominated investments 0.057 0.023
Percentage of aggregate capitalization of fund 5.00%  
Percentage of aggregate fair value of fund assets 5.00%  
Investments, at fair value $ 2,514,733,419 [1] $ 2,244,701,289 [2]
Cash and cash equivalents $ 117,174,448 221,222,080
Percentage of annual operating expenses not exceeded value of fund net assets 1.25%  
Organizational expenses $ 200,000  
Offering expenses 600,000  
JPMorgan U.S. Treasury Plus Money Market Fund    
Schedule Of Summary Of Significant Accounting Policies [Line Items]    
Cash and cash equivalents $ 74,400,000 $ 201,400,000
Percentage of cash and cash equivalents net assets held 4.50% 12.80%
Yield percentage of cash equivalents investment 3.50% 3.63%
Market Quotations    
Schedule Of Summary Of Significant Accounting Policies [Line Items]    
Investments, at fair value $ 17,700,000  
Income Approach    
Schedule Of Summary Of Significant Accounting Policies [Line Items]    
Investments, at fair value 5,900,000  
Expected Recovery    
Schedule Of Summary Of Significant Accounting Policies [Line Items]    
Investments, at fair value 1,800,000  
Level 3    
Schedule Of Summary Of Significant Accounting Policies [Line Items]    
Investments, at fair value $ 1,848,738,889 $ 1,639,926,427
Maximum | Level 3    
Schedule Of Summary Of Significant Accounting Policies [Line Items]    
Valuation technique relative weight range 100.00%  
Minimum    
Schedule Of Summary Of Significant Accounting Policies [Line Items]    
Percentage of aggregate fair value of total assets 5.00%  
Minimum | Level 3    
Schedule Of Summary Of Significant Accounting Policies [Line Items]    
Valuation technique relative weight range 0.00%  
[1] The Fund generally uses Global Industry Classification Standard ("GICS") codes to identify the industry groupings.
[2] The Fund generally uses GICS codes to identify the industry groupings.