Shareholder Report, Line Graph (Details) 197052_Direxion Monthly NASDAQ 100 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 NASDAQ-100® Bull 1.75X Fund | ||||||||||
| Accumulated Value | $ 121,909 | $ 94,554 | $ 67,184 | $ 48,188 | $ 83,580 | $ 52,411 | $ 22,724 | $ 24,283 | $ 15,455 | $ 10,000 | $ 169,983 |
| NASDAQ Composite Index [Member] | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | NASDAQ Composite Index | ||||||||||
| Accumulated Value | 44,583 | 36,558 | 28,753 | 23,992 | 30,755 | 23,569 | 15,783 | 15,897 | 12,473 | 10,000 | $ 55,121 |
| NASDAQ-100 Index [Member] | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | NASDAQ-100® Index | ||||||||||
| Accumulated Value | $ 53,282 | $ 44,209 | $ 34,728 | $ 27,250 | $ 34,334 | $ 26,492 | $ 16,662 | $ 16,401 | $ 12,700 | $ 10,000 | $ 67,457 |