v3.26.1
COMBINED FINANCIAL HIGHLIGHTS (Tables)
 3 Months Ended
Jun. 30, 2026
FINANCIAL HIGHLIGHTS [Abstract]  
Summary of Per Share Performance
     
    For the Three
months ended
June 30, 2026* 		 
Net asset value per Share, beginning of period  $14.41 
Net investment income (loss)(a)   0.18 
Net realized and unrealized gain (loss) on investment in Solana(b)   (1.39) 
Net change in net assets from operations   (1.21) 
Distributions of net staking rewards to Shareholders   (0.10) 
Net asset value per Share, end of period  $13.10 
      
Total return, at net asset value(c)   (8.39)%
      
Ratio to average net assets(d)     
Net investment income (loss)   5.29%
Gross expenses   0.51%
Net expenses   0.37%
(a)
Calculated using average Shares outstanding.
(b)
The amount shown for a Share outstanding may not agree with the change in the aggregate gains and losses on investment for the period because of the timing of transactions in the Fund’s Shares in relation to fluctuating market values for the Fund’s underlying investment.
(c)
Total Return at NAV is calculated assuming an initial investment made at the NAV at the beginning of the period, and redemption of Shares at NAV on the last day of the period. Total Return at NAV as shown above includes adjustments in accordance with U.S. GAAP.Total return for periods of less than a year are not annualized.
(d)
Annualized.
 
Franklin Solana ETF [Member]  
FINANCIAL HIGHLIGHTS [Abstract]  
Summary of Per Share Performance
     
    For the Three
months ended
June 30, 2026* 		 
Net asset value per Share, beginning of period  $14.41 
Net investment income (loss)(a)   0.18 
Net realized and unrealized gain (loss) on investment in Solana(b)   (1.39) 
Net change in net assets from operations   (1.21) 
Distributions of net staking rewards to Shareholders   (0.10) 
Net asset value per Share, end of period  $13.10 
      
Total return, at net asset value(c)   (8.39)%
      
Ratio to average net assets(d)     
Net investment income (loss)   5.29%
Gross expenses   0.51%
Net expenses   0.37%
(a)
Calculated using average Shares outstanding.
(b)
The amount shown for a Share outstanding may not agree with the change in the aggregate gains and losses on investment for the period because of the timing of transactions in the Fund’s Shares in relation to fluctuating market values for the Fund’s underlying investment.
(c)
Total Return at NAV is calculated assuming an initial investment made at the NAV at the beginning of the period, and redemption of Shares at NAV on the last day of the period. Total Return at NAV as shown above includes adjustments in accordance with U.S. GAAP. Total return for periods of less than a year are not annualized.
(d)
Annualized.