Shareholder Report, Average Annual Return (Details) 194690_Themes Cybersecurity ETF_TF_TSR Annual {TF} |
12 Months Ended | 22 Months Ended |
|---|---|---|
Sep. 30, 2025 |
Sep. 30, 2025 |
|
| Themes Cybersecurity ETF | ||
| Average Annual Return [Line Items] | ||
| Line Graph and Table Measure Name | Themes Cybersecurity ETF | |
| Average Annual Return, Percent | 20.73% | 20.28% |
| MSCI ACWI Index | ||
| Average Annual Return [Line Items] | ||
| Line Graph and Table Measure Name | MSCI ACWI Index | |
| Average Annual Return, Percent | 17.27% | 22.92% |
| Solactive Cyber Security Index | ||
| Average Annual Return [Line Items] | ||
| Line Graph and Table Measure Name | Solactive Cyber Security Index | |
| Average Annual Return, Percent | 21.45% | 20.94% |