Fees and Expenses - Putnam Focused Large Cap Growth ETF	Dec. 30, 2024
Prospectus [Line Items]
Expenses Restated to Reflect Current [Text]	Management fees of the fund have been restated to reflect the reduced management fee effective July 1, 2025.
Operating Expenses Caption [Optional Text]	Annual fund operating expenses(expenses you pay each year as a percentage of the value of your investment)
Expense Example [Heading]	Example
Expense Example Narrative [Text Block]	The following hypothetical example is intended to help you compare the cost of investing in the fund with the cost of investing in other funds. It assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all your shares at the end of those periods. It assumes a 5% return on your investment each year and that the fund’s operating expenses remain the same. Your actual costs may be higher or lower.

Fees and Expenses - Putnam Focused Large Cap Growth ETF

Dec. 30, 2024

Expenses Restated to Reflect Current [Text]

Management fees of the fund have been restated to reflect the reduced management fee effective July 1, 2025.

Operating Expenses Caption [Optional Text]

Annual fund operating expenses(expenses you pay each year as a percentage of the value of your investment)

Example

The following hypothetical example is intended to help you compare the cost of investing in the fund with the cost of investing in other funds. It assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all your shares at the end of those periods. It assumes a 5% return on your investment each year and that the fund’s operating expenses remain the same. Your actual costs may be higher or lower.