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Financial Highlights - Schedule of Net Asset Value Per Share (Detail) - $ / shares | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Net Asset Value |  |  |  |
Net asset value per Share, beginning of period | $ 17.99 | $ 18.78 | $ 18.42 | $ 18.5
Net realized and change in unrealized gain (loss) on United States Treasury Obligations, Affiliated Investments and Currency Futures Contracts | (0.29) | (0.15) | (0.93) | (0.04)
Net investment income (loss) | 0.2 | 0.2 | 0.41 | 0.37
Net income (loss) | (0.09) | 0.05 | (0.52) | 0.33
Net asset value per Share, end of period | 17.90 | 18.83 | 17.90 | 18.83
Market value per Share, beginning of period | 17.99 | 18.78 | 18.43 | 18.5
Market value per Share, end of period | $ 17.90 | $ 18.82 | $ 17.90 | $ 18.82
Ratio to average Net Assets |  |  |  |
Net investment income (loss) | 4.54% | 4.20% | 4.58% | 3.94%
Expenses, after waivers | 0.74% | 0.73% | 0.73% | 0.74%
Expenses, prior to waivers | 0.78% | 0.78% | 0.78% | 0.78%
Total Return, at net asset value | (0.50%) | 0.27% | (2.82%) | 1.78%
Total Return, at market value | (0.50%) | 0.21% | (2.88%) | 1.73%

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