Combined Statements of Assets and Liabilities - USD ($) |
Jun. 30, 2026 |
Mar. 31, 2026 |
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| Assets | ||||||
| Investment in bitcoin, at fair value | [1] | $ 334,751,802 | $ 429,409,784 | |||
| Total assets | 334,751,802 | 429,409,784 | ||||
| Liabilities | ||||||
| Sponsor's fee payable | $ 56,873 | $ 69,685 | ||||
| Notes Payable, Related Party, Type [Extensible Enumeration] | Related Party [Member] | Related Party [Member] | ||||
| Total liabilities | $ 56,873 | $ 69,685 | ||||
| Commitments and contingencies (Note 7) | ||||||
| Net assets | $ 334,694,929 | $ 429,340,099 | ||||
| Shares issued (in Shares) | [2] | 9,800,000 | 10,900,000 | |||
| Shares outstanding (in Shares) | [2] | 9,800,000 | 10,900,000 | |||
| Net asset value per Share (in Dollars per share) | $ 34.15 | $ 39.39 | ||||
| Franklin Bitcoin ETF [Member] | ||||||
| Assets | ||||||
| Investment in bitcoin, at fair value | [1] | $ 334,751,802 | $ 429,409,784 | |||
| Total assets | 334,751,802 | 429,409,784 | ||||
| Liabilities | ||||||
| Sponsor's fee payable | $ 56,873 | $ 69,685 | ||||
| Notes Payable, Related Party, Type [Extensible Enumeration] | Related Party [Member] | Related Party [Member] | ||||
| Total liabilities | $ 56,873 | $ 69,685 | ||||
| Commitments and contingencies (Note 7) | ||||||
| Net assets | $ 334,694,929 | $ 429,340,099 | ||||
| Shares issued (in Shares) | [2] | 9,800,000 | 10,900,000 | |||
| Shares outstanding (in Shares) | [2] | 9,800,000 | 10,900,000 | |||
| Net asset value per Share (in Dollars per share) | $ 34.15 | $ 39.39 | ||||
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- Definition Amount of asset recognized for present right to economic benefit. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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- Definition Amount of net assets (liabilities). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Represents the caption on the face of the balance sheet to indicate that the entity has entered into (1) purchase or supply arrangements that will require expending a portion of its resources to meet the terms thereof, and (2) is exposed to potential losses or, less frequently, gains, arising from (a) possible claims against a company's resources due to future performance under contract terms, and (b) possible losses or likely gains from uncertainties that will ultimately be resolved when one or more future events that are deemed likely to occur do occur or fail to occur. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Fair value of crypto asset. Excludes crypto asset held for platform user. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of liability recognized for present obligation requiring transfer or otherwise providing economic benefit to others. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- References No definition available.
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- Definition Amount of fee payable for management of fund or trust. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Net asset value per share or per unit of investments in certain entities that calculate net asset value per share. Includes, but is not limited to, by unit, membership interest, or other ownership interest. Investment includes, but is not limited to, investment in certain hedge funds, venture capital funds, private equity funds, real estate partnerships or funds. Excludes fair value disclosure. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Indicates status and type of related party for notes payable. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Number of shares of stock issued as of the balance sheet date, including shares that had been issued and were previously outstanding but which are now held in the treasury. No definition available.
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- Definition Number of shares issued which are neither cancelled nor held in the treasury. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Details
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