v3.26.1
SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($)
 3 Months Ended 4 Months Ended
Jun. 30, 2026
Mar. 31, 2026
SIGNIFICANT ACCOUNTING POLICIES [Abstract]    
Distributions to shareholders [1],[2] $ 66,090  
Sponsor's fee rate 0.19%  
Threshold value of fund's assets on basis of which Sponsor's fee is determined   $ 5,000,000,000
Sponsor fees $ 4,303  
Waiver 3,069  
Extraordinary or non-routine expenses $ 0  
Staking services fee as a percentage of gross staking rewards 8.00%  
Franklin Solana ETF [Member]    
SIGNIFICANT ACCOUNTING POLICIES [Abstract]    
Distributions to shareholders [3],[4] $ 66,090  
Sponsor's fee rate 0.19%  
Threshold value of fund's assets on basis of which Sponsor's fee is determined   $ 5,000,000,000
Sponsor fees $ 4,303  
Waiver 3,069  
Extraordinary or non-routine expenses $ 0  
Staking services fee as a percentage of gross staking rewards 8.00%  
Maximum [Member]    
SIGNIFICANT ACCOUNTING POLICIES [Abstract]    
Ordinary legal fees and expenses assumed by the sponsor $ 500,000  
Staking services fee as a percentage of gross staking rewards 100.00%  
Maximum [Member] | Franklin Solana ETF [Member]    
SIGNIFICANT ACCOUNTING POLICIES [Abstract]    
Ordinary legal fees and expenses assumed by the sponsor $ 500,000  
Staking services fee as a percentage of gross staking rewards 100.00%  
[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] No comparative period presented as the Fund’s operations commenced on December 3, 2025.
[3] 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.
[4] No comparative period presented as the Fund’s operations commenced on December 3, 2025.