v3.26.3
Shareholder Report, Line Graph (Details) 197049_Direxion Monthly S-P 500 Bull 1.75X Fund_Investor_TSR Annual {Investor} - USD ($)
12 Months Ended
Aug. 31, 2025
Aug. 31, 2024
Aug. 31, 2023
Aug. 31, 2022
Aug. 31, 2021
Aug. 31, 2020
Aug. 31, 2019
Aug. 31, 2018
Aug. 31, 2017
Aug. 31, 2016
Aug. 31, 2026
Investor                      
Account Value [Line Items]                      
Line Graph and Table Measure Name                     Direxion Monthly S&P 500® Bull 1.75X Fund
Accumulated Value $ 58,497 $ 48,376 $ 34,292 $ 28,551 $ 38,473 $ 23,432 $ 17,230 $ 17,708 $ 13,033 $ 10,000 $ 75,885
S&P 500 Index [Member]                      
Account Value [Line Items]                      
Line Graph and Table Measure Name                     S&P 500® Index
Accumulated Value $ 34,718 $ 29,960 $ 23,566 $ 20,325 $ 22,895 $ 17,455 $ 14,315 $ 13,909 $ 11,623 $ 10,000 $ 41,793