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Risk - Additional Information (Detail)
 12 Months Ended
Dec. 31, 2025
Unusual Risk or Uncertainty [Line Items]  
Inverse correlation, description The return of a Geared Fund for a period longer than a single day is the result of its return for each day compounded over the period and usually will differ from one-half the inverse (-0.5x), two times the inverse (-2x), one and one-half times (1.5x) the return or two times (2x) the return of the Geared Fund’s benchmark for the same period.
Ultrashort Fund [Member]  
Unusual Risk or Uncertainty [Line Items]  
Leverage risk benchmark 50.00%