Shareholder Report, Average Annual Return (Details) 194120_Themes China Generative Artificial Intelligence ETF_TF_TSR Annual {TF} |
3 Months Ended | 12 Months Ended |
|---|---|---|
Sep. 30, 2025 |
Sep. 30, 2025 |
|
| Themes China Generative Artificial Intelligence ETF | ||
| Average Annual Return [Line Items] | ||
| Line Graph and Table Measure Name | Themes China Generative Artificial Intelligence ETF NAV | |
| Average Annual Return, Percent | 50.05% | |
| 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 | 6.93% | |
| BITA China Generative AI Select Index | ||
| Average Annual Return [Line Items] | ||
| Line Graph and Table Measure Name | BITA China Generative AI Select Index | |
| Average Annual Return, Percent | 50.02% |