Quarterly report [Sections 13 or 15(d)]

MARGIN LENDING, BROKERAGE AND OTHER RECEIVABLES, NET - Narrative (Details)

v3.25.4
MARGIN LENDING, BROKERAGE AND OTHER RECEIVABLES, NET - Narrative (Details)
$ in Thousands
Dec. 31, 2025
USD ($)
customer
Mar. 31, 2025
USD ($)
customer
Schedule of Accounts, Notes, Loans and Financing Receivable [Table]    
Collateral received, fair value $ 8,498,497 $ 6,379,368
Other receivables 3,010,625 3,319,145
Accounts receivable, allowance for credit loss 18,104 19,256
Margin lending receivables    
Schedule of Accounts, Notes, Loans and Financing Receivable [Table]    
Other receivables $ 2,961,782 $ 3,294,569
Nonrelated Party    
Schedule of Accounts, Notes, Loans and Financing Receivable [Table]    
Number of customers with a balance exceeding ten percent | customer 2 3
Collateralized financings $ 1,958,145 $ 3,218,277
Nonrelated Party | Margin lending receivables    
Schedule of Accounts, Notes, Loans and Financing Receivable [Table]    
Other receivables $ 1,797,094 $ 2,323,461