v3.26.1
Shareholder Report, Line Graph (Details) 194695_Themes Silver Miners ETF_TF_TSR Annual {TF} - USD ($)
12 Months Ended
Sep. 30, 2024
May 03, 2024
Sep. 30, 2025
Themes Silver Miners ETF      
Account Value [Line Items]      
Line Graph and Table Measure Name     Themes Silver Miners ETF
Accumulated Value $ 11,601 $ 10,000 $ 21,853
MSCI ACWI Index      
Account Value [Line Items]      
Line Graph and Table Measure Name     MSCI ACWI Index
Accumulated Value 11,282 10,000 $ 13,230
STOXX Global Silver Mining Index      
Account Value [Line Items]      
Line Graph and Table Measure Name     STOXX Global Silver Mining Index
Accumulated Value $ 11,638 $ 10,000 $ 22,085