XML 42 R31.htm IDEA: XBRL DOCUMENT v3.25.0.1
Summary of Significant Accounting Policies - Additional Information (Detail)
 12 Months Ended
Dec. 31, 2024
USD ($)
Segment
$ / shares
Dec. 31, 2023
USD ($)
$ / shares
Dec. 31, 2022
USD ($)
$ / shares
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Average charges paid to broker per round-turn trade, maximum $ 6 $ 6 $ 6
Unrecognized tax benefit $ 0    
Number of Operating Segments | Segment 1    
Change in Accounting Principle, Accounting Standards Update, Adopted [true false] true    
Change in Accounting Principle, Accounting Standards Update, Immaterial Effect [true false] true    
Accounting Standards Update [Extensible Enumeration] us-gaap:AccountingStandardsUpdate202307Member    
O 2024 A Dividends [Member]      
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Distribution paid date Dec. 27, 2024    
Distribution record date Dec. 23, 2024    
General Shares [Member]      
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Distribution, amount per share | $ / shares $ 2.55968 $ 2.23426 $ 0.21759
Distributed earnings $ 102 $ 89 $ 9
Shares [Member]      
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Distribution, amount per share | $ / shares $ 2.55968 $ 2.23426 $ 0.21759
Distributed earnings $ 6,783,152 $ 6,702,780 $ 500,457