v3.26.3
RELATED PARTY TRANSACTIONS (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Dec. 31, 2025
Related Party Transaction [Line Items]          
Revenue $ 1,215,582 $ 1,868,693 $ 3,848,632 $ 5,400,196  
Customer custodial funds 4,462,310   4,462,310   $ 5,347,428
Customer custodial fund liabilities 4,462,310   4,462,310   5,347,428
General and administrative 318,878 418,446 1,051,896 1,166,499  
Related Party          
Related Party Transaction [Line Items]          
Revenue 800 3,100 3,500 8,300  
Amounts receivable from customers, net of allowance 400   400   400
Customer custodial funds 2,300   2,300   11,000
Customer custodial fund liabilities 2,300   2,300   $ 11,000
Related Party | Strategic Investments in Equity Securities, FV-NI and without Readily Determinable Fair Value          
Related Party Transaction [Line Items]          
Related party transaction $ 5,000 $ 1,500 $ 6,900 $ 9,300