XML 345 R64.htm IDEA: XBRL DOCUMENT v3.25.3
Receivables from/Payables to Broker-Dealers and Clearing Organizations - Narrative (Details) - USD ($)
$ in Millions
Sep. 30, 2025
Dec. 31, 2024
Due to and from Broker-Dealers and Clearing Organizations [Abstract]    
Outstanding principal balance $ 123.2 $ 123.0