v3.26.1
Fair Value Measurement - Summary of Assets Measured At Fair Value (Details) - USD ($)
$ in Thousands
Mar. 31, 2026
Dec. 31, 2025
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total Investments $ 12,818,199 $ 17,639,927
Investment in Bitcoin [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total Investments 12,818,199 17,639,927
Fair Value, Inputs, Level 1 [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total Investments 12,818,199 17,639,927
Fair Value, Inputs, Level 1 [Member] | Investment in Bitcoin [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total Investments 12,818,199 17,639,927
Fair Value, Inputs, Level 2 [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total Investments 0 0
Fair Value, Inputs, Level 2 [Member] | Investment in Bitcoin [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total Investments 0 0
Fair Value, Inputs, Level 3 [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total Investments 0 0
Fair Value, Inputs, Level 3 [Member] | Investment in Bitcoin [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total Investments $ 0 $ 0