v3.26.1
MARGIN LENDING, BROKERAGE AND OTHER RECEIVABLES, NET - Narrative (Details)
$ in Thousands
Jun. 30, 2026
USD ($)
Mar. 31, 2026
USD ($)
customer
Schedule of Accounts, Notes, Loans and Financing Receivable [Table]    
Collateral received, fair value $ 7,129,867 $ 8,595,822
Other receivables 3,996,783 4,690,782
Allowance for receivables 20,788 19,959
Margin lending receivables    
Schedule of Accounts, Notes, Loans and Financing Receivable [Table]    
Other receivables 3,939,843 $ 4,632,506
Nonrelated Party    
Schedule of Accounts, Notes, Loans and Financing Receivable [Table]    
Number of customers with a balance exceeding ten percent | customer   3
Collateralized financings 3,922,572 $ 4,677,913
Nonrelated Party | Margin lending receivables    
Schedule of Accounts, Notes, Loans and Financing Receivable [Table]    
Other receivables $ 2,982,821 $ 3,286,545