v3.26.1
Related Party Transactions - Clearing Capital Agreement with Cantor (Details) - Related Party - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Related Party Transaction [Line Items]      
Cash and collateral posted expense $ 1.0 $ 0.9  
Collateral already posted, aggregate fair value $ 42.4   $ 67.6