Statements of Assets and Liabilities (Unaudited) (Parentheticals) - USD ($) $ / shares in Thousands	Sep. 30, 2025	Dec. 31, 2024
Investment in ether, at cost	$ 13,483,951,930	$ 3,543,902,275
Shares, par value (in dollars per share)	$ 0	$ 0
Shares, issued (in shares)	508,080,000	141,480,000