v3.26.1
Annual Fund Operating Expenses - Thornburg Premium Income Builder ETF [Member]
May 22, 2026
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.79%
Other Expenses (as a percentage of Assets): 0.00% [1]
Expenses (as a percentage of Assets) 0.79%
[1] “Other Expenses” is an estimate based on the expenses the Fund expects to incur for its first full fiscal year.