S000077137 [Member] Expense Example - Putnam BDC Income ETF - -	Apr. 30, 2026 USD ($)
Prospectus [Line Items]
Expense Example, with Redemption, 1 Year	$ 1,137
Expense Example, with Redemption, 3 Years	3,185
Expense Example, with Redemption, 5 Years	4,965
Expense Example, with Redemption, 10 Years	$ 8,463

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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