v3.25.2
Combined Statement of Changes in Net Assets
 3 Months Ended
Jun. 30, 2025
USD ($)
Net assets, beginning of period $ 21,605,398
Net investment loss (13,393)
Net realized gain (loss) on investment in ether (1,744,386)
Net change in unrealized appreciation (depreciation) on investment in ether 8,944,706
Net increase (decrease) in net assets resulting from operations 7,186,927
Increase (decrease) in net assets from capital share transactions:  
Contributions for Shares issued 8,115,719 [1]
Distributions for Shares redeemed (1,784,571)
Net increase (decrease) in net assets resulting from capital share transactions 6,331,148
Net assets, end of period 35,123,473
Franklin Ethereum ETF [Member]  
Net assets, beginning of period 21,605,398
Net investment loss (13,393)
Net realized gain (loss) on investment in ether (1,744,386)
Net change in unrealized appreciation (depreciation) on investment in ether 8,944,706
Net increase (decrease) in net assets resulting from operations 7,186,927
Increase (decrease) in net assets from capital share transactions:  
Contributions for Shares issued 8,115,719 [2]
Distributions for Shares redeemed (1,784,571)
Net increase (decrease) in net assets resulting from capital share transactions 6,331,148
Net assets, end of period $ 35,123,473
[1] Dollar amount of balance represents the cumulative fair value of creation of shares less the redemption of shares, at the time of the specific creation or redemption.
[2] Dollar amount of balance represents the cumulative fair value of creation of shares less the redemption of shares, at the time of the specific creation or redemption.