Shareholder Report, Average Annual Return (Details) 193137_Themes Transatlantic Defense ETF_TF_TSR Annual {TF} |
12 Months Ended | |
|---|---|---|
Sep. 30, 2025 |
Sep. 30, 2025 |
|
| Themes Transatlantic Defense ETF | ||
| Average Annual Return [Line Items] | ||
| Line Graph and Table Measure Name | Themes Transatlantic Defense ETF NAV | |
| Average Annual Return, Percent | 55.70% | |
| MSCI ACWI Net Total Return Index (USD) | ||
| Average Annual Return [Line Items] | ||
| Line Graph and Table Measure Name | MSCI ACWI Net Total Return Index (USD) | |
| Average Annual Return, Percent | 17.73% | |
| Solactive Transatlantic Aerospace and Defense Index NTR | ||
| Average Annual Return [Line Items] | ||
| Line Graph and Table Measure Name | Solactive Transatlantic Aerospace and Defense Index NTR | |
| Average Annual Return, Percent | 56.19% | |