Shareholder Report, Line Graph (Details) 1014060_Putnam Focused Large Cap Growth ETF_Single Class_TSR Annual {Single Class} - USD ($) |
12 Months Ended | ||||||
|---|---|---|---|---|---|---|---|
Aug. 31, 2025 |
Aug. 31, 2024 |
Aug. 31, 2023 |
Aug. 31, 2022 |
Aug. 31, 2021 |
May 25, 2021 |
Aug. 31, 2026 |
|
| Putnam Focused Large Cap Growth ETF | |||||||
| Account Value [Line Items] | |||||||
| Line Graph and Table Measure Name | Putnam Focused Large Cap Growth ETF (NAV) | ||||||
| Accumulated Value | $ 17,056 | $ 14,043 | $ 10,628 | $ 8,856 | $ 11,544 | $ 10,000 | $ 18,831 |
| Russell 3000 Index [Member] | |||||||
| Account Value [Line Items] | |||||||
| Line Graph and Table Measure Name | Russell 3000 Index | ||||||
| Accumulated Value | 15,584 | 13,453 | 10,665 | 9,294 | 10,717 | 10,000 | $ 18,717 |
| Russell 1000 Growth Index [Member] | |||||||
| Account Value [Line Items] | |||||||
| Line Graph and Table Measure Name | Russell 1000 Growth Index | ||||||
| Accumulated Value | $ 18,015 | $ 14,697 | $ 11,240 | $ 9,218 | $ 11,388 | $ 10,000 | $ 19,963 |