v3.25.4
INVESTMENT IN GOLD - Changes in Ounces of Gold Held and Respective Fair value (Details) - Franklin Responsibly Sourced Gold ETF [Member]
 3 Months Ended 9 Months Ended
Dec. 31, 2025
USD ($)
oz
Dec. 31, 2024
USD ($)
oz
Dec. 31, 2025
USD ($)
oz
Dec. 31, 2024
USD ($)
oz
INVESTMENT IN GOLD [Abstract]        
Beginning Balance (Amount in Ounces) | oz 98,620.181 32,699.485 60,016.277 28,048.958
Beginning Balance (Amount in US$) | $ $ 377,251,778 $ 85,998,011 $ 186,956,705 [1] $ 62,110,210
Gold received for the creation of Shares (Amount in Ounces) | oz 9,326.172 18,678.465 52,646.362 23,350.56
Gold received for the creation of Shares (Amount in US$) | $ $ 39,451,008 $ 50,058,818 $ 192,853,635 $ 61,737,195
Gold distributed for the redemption of Shares (Amount in Ounces) | oz 0 (10,005.285) (4,666.909) (10,005.285)
Gold distributed for the redemption of Shares (Amount in US$) | $ $ 0 $ (26,173,315) $ (14,608,036) $ (26,173,315)
Principal on gold sales to pay expenses (Amount in Ounces) | oz (33.895) (12.494) (83.272) (34.062)
Principal on gold sales to pay expenses (Amount in US$) | $ $ (141,171) $ (33,032) $ (307,096) $ (84,660)
Net realized gain (loss) from gold distributed for the redemptions of shares and sold to pay expenses (Amount in Ounces) | oz 0 0 0 0
Net realized gain (loss) from gold distributed for the redemption of shares and sold to pay expenses (Amount in US$) | $ $ 40,960 $ 4,249,440 $ 2,948,570 $ 4,261,209
Net change in unrealized appreciation (depreciation) on investment in gold (Amount in ounces) | oz 0 0 0 0
Net change in unrealized appreciation (depreciation) on investment in gold (Amount in US$) | $ $ 48,278,898 $ (6,114,720) $ 97,037,695 $ 6,134,563
Ending Balance (Amount in Ounces) | oz 107,912.458 41,360.171 107,912.458 41,360.171
Ending Balance (Amount in US$) | $ $ 464,881,473 [1] $ 107,985,202 $ 464,881,473 [1] $ 107,985,202
[1] Cost of investment in gold bullion: $326,196,160 at December 31, 2025 and $145,309,087 at March 31, 2025.