Statements of Assets and Liabilities (unaudited) (Parenthetical) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended |
|---|---|---|
Mar. 31, 2026 |
Dec. 31, 2025 |
|
| Investment in bitcoin, at fair value | $ 10,388,215 | $ 11,375,981 |
| Common stock, par value | $ 0 | $ 0 |
| Common Stock, Shares Authorized, Unlimited [Fixed List] | Unlimited | Unlimited |
| Common stock, shares issued | 216,003,476 | 231,403,476 |
| Common stock, shares outstanding | 216,003,476 | 231,403,476 |
| X | ||||||||||
- Definition Face amount or stated value per share of common stock. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Indicates whether number of common shares permitted to be issued is unlimited. Acceptable value is "Unlimited". Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Cost of the investment. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|