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Summary of Significant Accounting Policies - Summary of valuation techniques and observable inputs can vary by investment (Detail) - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]        
Investment in Bitcoin $ 26,350,470 $ 10,464,263 $ 29,576,053 $ 17,716,478
Level 1        
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]        
Investment in Bitcoin 26,350,470 10,464,263    
Level 2        
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]        
Investment in Bitcoin 0 0    
Level 3        
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]        
Investment in Bitcoin $ 0 $ 0