FINANCIAL HIGHLIGHTS - Summary of Per Share Performance (Parentheticals) (Details) - Franklin Bitcoin ETF [Member] - USD ($)		3 Months Ended		7 Months Ended	9 Months Ended
	Jan. 11, 2024	Dec. 31, 2025	Dec. 31, 2024	Aug. 02, 2024	Dec. 31, 2025	Dec. 31, 2024
FINANCIAL HIGHLIGHTS [Abstract]
Sponsor's fee rate	0.29%			0.00%	0.19%
Threshold value of the fund's assets on the basis of which Sponsor's fee is determined (in Dollars)				$ 10,000,000,000
Sponsor's fee (in Dollars)	$ 21	$ 278,172	$ 295,795		$ 812,154	$ 664,201