Shareholder Report, Average Annual Return (Details) 194687_Themes US R-D Champions ETF_TF_TSR Annual {TF} |
12 Months Ended | 22 Months Ended |
|---|---|---|
Sep. 30, 2025 |
Sep. 30, 2025 |
|
| Themes US R&D Champions ETF | ||
| Average Annual Return [Line Items] | ||
| Line Graph and Table Measure Name | Themes US R&D Champions ETF | |
| Average Annual Return, Percent | 9.56% | 18.82% |
| S&P 500 Index | ||
| Average Annual Return [Line Items] | ||
| Line Graph and Table Measure Name | S&P 500 Index | |
| Average Annual Return, Percent | 17.60% | 24.09% |
| Solactive US R&D Champions Index | ||
| Average Annual Return [Line Items] | ||
| Line Graph and Table Measure Name | Solactive US R&D Champions Index | |
| Average Annual Return, Percent | 10.28% | 19.48% |