v3.26.1
Shareholder Report, Average Annual Return (Details) 194693_Themes Robotics - Automation ETF_TF_TSR Annual {TF}
12 Months Ended 17 Months Ended
Sep. 30, 2025
Sep. 30, 2025
Themes Humanoid Robotics ETF    
Average Annual Return [Line Items]    
Line Graph and Table Measure Name Themes Humanoid Robotics ETF  
Average Annual Return, Percent 43.51% 39.17%
MSCI ACWI Index    
Average Annual Return [Line Items]    
Line Graph and Table Measure Name MSCI ACWI Index  
Average Annual Return, Percent 17.27% 23.31%
Solactive Industrial Robotics & Automation Index    
Average Annual Return [Line Items]    
Line Graph and Table Measure Name Solactive Industrial Robotics & Automation Index  
Average Annual Return, Percent 30.51% 25.42%