Shareholder Report, Average Annual Return (Details) 193134_Themes US Infrastructure ETF_TF_TSR Annual {TF} |
12 Months Ended | 13 Months Ended |
|---|---|---|
Sep. 30, 2025 |
Sep. 30, 2025 |
|
| Themes US Infrastructure ETF | ||
| Average Annual Return [Line Items] | ||
| Line Graph and Table Measure Name | Themes US Infrastructure ETF | |
| Average Annual Return, Percent | 13.54% | 21.73% |
| 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% | 20.89% |
| Solactive United States Infrastructure Index | ||
| Average Annual Return [Line Items] | ||
| Line Graph and Table Measure Name | Solactive United States Infrastructure Index | |
| Average Annual Return, Percent | 13.60% | 21.80% |