Combined Statement of Operations - USD ($)	3 Months Ended			5 Months Ended	9 Months Ended
	Dec. 31, 2025		Dec. 31, 2024	Dec. 31, 2024	Dec. 31, 2025
Expenses
Sponsor’s fee	$ 35,569		$ 18,827	$ 28,956	$ 85,512
Less waiver	0		(18,827)	(28,956)	0
Total expenses	35,569		0	0	85,512
Net investment loss	(35,569)		0	0	(85,512)
Net realized and change in unrealized gain (loss) on investment in ether
Net realized gain (loss) on investment in ether	353,054		215,469	20,638	3,260,379
Net change in unrealized appreciation (depreciation) on investment in ether	(24,838,286)		8,286,409	1,509,264	6,347,571
Net realized and change in unrealized gain (loss) on investment in ether	(24,485,232)		8,501,878	1,529,902	9,607,950
Net increase (decrease) in net assets resulting from operations	$ (24,520,801)		$ 8,501,878	$ 1,529,902	$ 9,522,438
Net increase (decrease) in net assets per Share (in Dollars per share)	$ (8.67)	[1]	$ 5.07	$ 0.98	$ 4.04
Franklin Ethereum ETF [Member]
Expenses
Sponsor’s fee	$ 35,569		$ 18,827	$ 28,956	$ 85,512
Less waiver	0		(18,827)	(28,956)	0
Total expenses	35,569		0	0	85,512
Net investment loss	(35,569)		0	0	(85,512)
Net realized and change in unrealized gain (loss) on investment in ether
Net realized gain (loss) on investment in ether	353,054		215,469	20,638	3,260,379
Net change in unrealized appreciation (depreciation) on investment in ether	(24,838,286)		8,286,409	1,509,264	6,347,571
Net realized and change in unrealized gain (loss) on investment in ether	(24,485,232)		8,501,878	1,529,902	9,607,950
Net increase (decrease) in net assets resulting from operations	$ (24,520,801)		$ 8,501,878	$ 1,529,902	$ 9,522,438
Net increase (decrease) in net assets per Share (in Dollars per share)	$ (8.67)	[1]	$ 5.07	$ 0.98	$ 4.04

[1] Net increase (decrease) in net assets per Share based on average shares outstanding during the period.