SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Effects of Change in Accounting Policy (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Consolidated Balance Sheets
Customer custodial funds	$ 5,041,119	$ 10,617,552
Accounts and loans receivable, net of allowance	404,376	304,706
Consolidated Statements of Cash Flows
Accounts and loans receivable	(141,023)	28,511	$ (117,167)
Deposits in transit	28,952	(36,527)	(39,989)
Customer custodial cash liabilities		0	0
Net cash (used in) provided by operating activities	(1,585,419)	4,038,172	293,548
Customer custodial cash liabilities	(5,562,558)	6,691,859	2,710,522
Net cash provided by financing activities	$ (5,838,518)	9,976,084	2,729,323
Previously Reported
Consolidated Balance Sheets
Customer custodial funds		10,526,233
Accounts and loans receivable, net of allowance		396,025
Consolidated Statements of Cash Flows
Accounts and loans receivable		(8,016)	(157,156)
Deposits in transit		0	0
Customer custodial cash liabilities		6,691,859	2,710,522
Net cash (used in) provided by operating activities		10,730,031	3,004,070
Customer custodial cash liabilities		0	0
Net cash provided by financing activities		3,284,225	18,801
Adjustment
Consolidated Balance Sheets
Customer custodial funds		91,319
Accounts and loans receivable, net of allowance		(91,319)
Consolidated Statements of Cash Flows
Accounts and loans receivable		36,527	39,989
Deposits in transit		(36,527)	(39,989)
Customer custodial cash liabilities		(6,691,859)	(2,710,522)
Net cash (used in) provided by operating activities		(6,691,859)	(2,710,522)
Customer custodial cash liabilities		6,691,859	2,710,522
Net cash provided by financing activities		$ 6,691,859	$ 2,710,522

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Amount, after allowance for credit loss, of accounts and financing receivables, classified as current. Includes, but is not limited to, notes and loan receivable.

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The increase (decrease) during the reporting period in moneys or securities given as security including, but not limited to, contract, escrow, or earnest money deposits, retainage (if applicable), deposits with clearing organizations and others, collateral, or margin deposits.

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