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REVENUE - Narrative (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Dec. 31, 2022
Disaggregation of Revenue [Line Items]          
Revenue $ 674,148 $ 590,339 $ 2,154,588 $ 2,565,100  
Custodial fee revenue          
Disaggregation of Revenue [Line Items]          
Amounts receivable from customers, net of allowance 10,000   10,000   $ 7,800
Other subscription and services revenue          
Disaggregation of Revenue [Line Items]          
Amounts receivable from customers, net of allowance 14,600   14,600   13,100
Related Party          
Disaggregation of Revenue [Line Items]          
Amounts receivable from customers, net of allowance 3,400   3,400   $ 1,300
Revenue $ 3,400 $ 1,900 $ 11,600 $ 9,500