SEGMENT AND GEOGRAPHICAL INFORMATION - Reconciliation of Total Segment Profit to Income before applicable Income Taxes (Details) - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Segment Reporting [Abstract]
Total segment gross profit	$ 1,294,960,000	$ 963,501,000
Less: Product development	484,761,000	310,141,000
Less: Sales and marketing	501,562,000	349,460,000
Less: General and administrative	444,276,000	195,909,000
Less: Transaction, loan, and consumer receivable losses	91,150,000	20,395,000
Less: Bitcoin impairment losses	0	19,860,000
Less: Interest expense, net	15,748,000	253,000
Less: Other expense (income), net	(33,472,000)	27,528,000
Income (loss) before income tax	$ (209,065,000)	$ 39,955,000