S000077139 [Member] Fees and Expenses - Putnam Emerging Markets ex-China ETF	Apr. 30, 2025
Prospectus [Line Items]
Expense Heading [Optional Text]	Fees and expenses
Expense Narrative [Text Block]	The following tables describe the fees and expenses you may pay if you buy, hold and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.
Expenses Restated to Reflect Current [Text]	Management fees have been restated to reflect the reduced management fee effective July 1, 2025.
Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]	Total annual fund operating expenses do not correlate with the ratios of expenses to average net assets reported in the fund’s financial highlights tables, which reflect the fund’s operating expenses and do not include acquired fund fees and expenses.
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. Only the first year of each period in the example takes into account the expense reimbursement described above. Your actual costs may be higher or lower.
Portfolio Turnover [Heading]	Portfolio turnover
Portfolio Turnover [Text Block]	The fund pays transaction-related costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher turnover rate may indicate higher transaction costs and may result in higher taxes when the fund’s shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or the above example, affect fund performance. The fund’s turnover rate in the most recent fiscal year was 53%.
Portfolio Turnover, Rate	53.00%

S000077139 [Member] Fees and Expenses - Putnam Emerging Markets ex-China ETF

Apr. 30, 2025

Fees and expenses

The following tables describe the fees and expenses you may pay if you buy, hold and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.

Expenses Restated to Reflect Current [Text]

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

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

Total annual fund operating expenses do not correlate with the ratios of expenses to average net assets reported in the fund’s financial highlights tables, which reflect the fund’s operating expenses and do not include acquired fund fees and expenses.

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. Only the first year of each period in the example takes into account the expense reimbursement described above. Your actual costs may be higher or lower.

Portfolio Turnover [Heading]

Portfolio turnover

Portfolio Turnover [Text Block]

The fund pays transaction-related costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher turnover rate may

indicate higher transaction costs and may result in higher taxes when the fund’s shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or the above example, affect fund performance. The fund’s turnover rate in the most recent fiscal year was 53%.

Portfolio Turnover, Rate

53.00%