v3.25.1
Investments in Affiliates - Additional Information (Detail) - USD ($)
3 Months Ended
Mar. 31, 2025
Dec. 31, 2024
Investments In And Advances To Affiliates [Line Items]    
Treasury obligation measurement maximum maturity period 12 months  
United States Treasury Obligations, Value $ 397,272,516 $ 393,253,144
Affiliated Investments [Member]    
Investments In And Advances To Affiliates [Line Items]    
Investment, Type [Extensible Enumeration] US Treasury and Government [Member]  
Treasury obligation measurement minimum maturity period 1 month  
Treasury obligation measurement maximum maturity period 12 months  
Minimum [Member] | Affiliated Investments [Member]    
Investments In And Advances To Affiliates [Line Items]    
Investment, Type [Extensible Enumeration] US Treasury and Government [Member]  
United States Treasury Obligations, Value $ 300,000,000