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Fair Value of Bitcoin - Summary of changes in quantity of Bitcoin and the respective fair value (Detail)
$ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2023
USD ($)
NUMBER
Sep. 30, 2023
USD ($)
Jun. 30, 2023
USD ($)
Mar. 31, 2023
USD ($)
NUMBER
Dec. 31, 2022
USD ($)
NUMBER
Sep. 30, 2022
USD ($)
Jun. 30, 2022
USD ($)
Mar. 31, 2022
USD ($)
NUMBER
Dec. 31, 2023
USD ($)
NUMBER
Dec. 31, 2022
USD ($)
NUMBER
Dec. 31, 2021
USD ($)
NUMBER
Fair Value Disclosures [Abstract]                      
Investment Owned ,Balance | NUMBER       632,041.52945742       644,809.96863835 632,041.52945742 644,809.96863835 607,039.48515191
Bitcoin contributed | NUMBER                 0 0 50,738.88950472
Bitcoin distributed for Sponsor's Fee, related party | NUMBER                 (12,515.60028722) (12,768.43918093) (12,968.40601828)
Investment Owned ,Balance | NUMBER 619,525.9291702       632,041.52945742       619,525.9291702 632,041.52945742 644,809.96863835
Investment Owned ,Balance       $ 10,464,263       $ 29,576,053 $ 10,464,263 $ 29,576,053 $ 17,716,478
Bitcoin contributed                 0 0 1,905,227
Bitcoin distributed for Sponsor's Fee, related party                 (360,561) (360,683) (615,420)
Net change in unrealized appreciation (depreciation) on investment in Bitcoin $ 9,555,222 $ (2,134,266) $ 1,131,742 7,475,264 $ (1,874,275) $ 347,631 $ (17,156,233) (284,294) 16,027,962 (18,967,171) 10,099,600
Net realized gain on investment in Bitcoin 78,005 $ 52,764 $ 52,169 $ 35,868 21,558 $ 31,890 $ 67,520 $ 95,096 218,806 216,064 470,168
Investment Owned ,Balance $ 26,350,470       $ 10,464,263       $ 26,350,470 $ 10,464,263 $ 29,576,053