v3.26.1
ORGANIZATION (Details)
 8 Months Ended 12 Months Ended
Jun. 27, 2024
USD ($)
Ethereum
CreationUnits
$ / item
shares
May 21, 2024
USD ($)
$ / shares
shares
Feb. 08, 2024
Shares
Mar. 31, 2025
USD ($)
Ethereum
shares
Mar. 31, 2026
USD ($)
Ethereum
shares
Jul. 22, 2024
Ethereum
Organization [Abstract]            
Threshold multiples in which shares are issued | Shares     50,000      
Stock issued during the period shares new issues (in Shares) | shares       1,750,000 2,850,000  
Proceeds from issuance of shares $ 2,619,241.2     $ 42,553,442 $ 75,689,578  
Payment to redeem shares [1]       $ 6,326,233 $ 46,977,953  
Number of Ether per creation unit 380          
Number of Ether per share 0.0076          
Quantity of ether purchased | Ethereum 760     11,780.2062 20,095.4606 760
Quantity of ether purchased | Ethereum 760     13,300 21,636.6183  
Cost of Ether per unit | $ / item 3,446.37          
Franklin Ethereum ETF [Member]            
Organization [Abstract]            
Threshold multiples in which shares are issued | Shares     50,000      
Stock issued during the period shares new issues (in Shares) | shares       1,750,000 2,850,000  
Proceeds from issuance of shares $ 2,619,241.2     $ 42,553,442 $ 75,689,578  
Payment to redeem shares [2]       $ 6,326,233 $ 46,977,953  
Number of Ether per creation unit 380          
Number of Ether per share 0.0076          
Quantity of ether purchased | Ethereum 760     11,780.2062 20,095.4606 760
Quantity of ether purchased | Ethereum 760     13,300 21,636.6183  
Cost of Ether per unit | $ / item 3,446.37          
Initial Seed Shares [Member]            
Organization [Abstract]            
Stock issued during the period shares new issues (in Shares) | shares   4,000        
Shares issued, price per share (in Dollars per share) | $ / shares   $ 25        
Proceeds from issuance of shares   $ 100,000        
Payment to redeem shares $ 100,000          
Initial Seed Shares [Member] | Franklin Ethereum ETF [Member]            
Organization [Abstract]            
Stock issued during the period shares new issues (in Shares) | shares   4,000        
Shares issued, price per share (in Dollars per share) | $ / shares   $ 25        
Proceeds from issuance of shares   $ 100,000        
Payment to redeem shares $ 100,000          
Seed Creation Units [Member]            
Organization [Abstract]            
Stock issued during the period shares new issues (in Shares) | shares 100,000          
Proceeds from issuance of shares $ 2,619,241.2          
Number of seed creation units issued | CreationUnits 2          
Number of Ether per creation unit 380          
Number of Ether per share 0.0076          
Quantity of ether purchased | Ethereum 760          
Seed Creation Units [Member] | Franklin Ethereum ETF [Member]            
Organization [Abstract]            
Stock issued during the period shares new issues (in Shares) | shares 100,000          
Proceeds from issuance of shares $ 2,619,241.2          
Number of seed creation units issued | CreationUnits 2          
Number of Ether per creation unit 380          
Number of Ether per share 0.0076          
Quantity of ether purchased | Ethereum 760          
[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.