v3.26.1
Shareholder Report, Average Annual Return (Details) 1014065_Putnam PanAgora ESG International Equity ETF_Single Class_TSR Annual {Single Class}
12 Months Ended 39 Months Ended
Apr. 30, 2026
Apr. 30, 2026
Putnam PanAgora ESG International Equity ETF    
Average Annual Return [Line Items]    
Line Graph and Table Measure Name Putnam PanAgora ESG International Equity ETF (NAV)  
Average Annual Return, Percent 22.11% 16.56%
MSCI All Country World ex-U.S. Index-NR    
Average Annual Return [Line Items]    
Line Graph and Table Measure Name MSCI All Country World ex-U.S. Index-NR  
Average Annual Return, Percent 32.20% 16.03%
MSCI EAFE Index-NR    
Average Annual Return [Line Items]    
Line Graph and Table Measure Name MSCI EAFE Index-NR  
Average Annual Return, Percent 24.60% 14.93%