XML 351 R66.htm IDEA: XBRL DOCUMENT

First Trust Indxx Metaverse ETF Annual Total Returns	12 Months Ended
First Trust Indxx Metaverse ETF Annual Total Returns	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
First Trust Indxx Metaverse ETF \| First Trust Indxx Metaverse ETF
Prospectus [Line Items]
Annual Return [Percent]	28.65%	10.47%	42.53%