v3.26.3
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Change in Policy (Details) - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Other current and non-current liabilities   $ (69,391)
Loans originated $ (9,891,266) (8,917,869)
Proceeds from repayment of loans 9,272,941 8,602,605
Business combinations, net of cash and cash equivalents acquired (22,085) (665,769)
Purchase of investments (301,638) (90,703)
Dispositions of investments 175,944 73,211
Purchases of crypto assets held for investment (217,892) (690,285)
Dispositions of crypto assets held for investment 43,114 263,685
Other investing activities, net (85,047) (86,289)
Customer collateral received 15,455 116,644
Return of customer collateral (7,784) (131,721)
Proceeds from short-term borrowings 939,113 501,316
Repayments of short-term borrowings (717,512) (436,510)
Additions of crypto asset investments $ 0 166,291
Previously Reported    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Other current and non-current liabilities   (2,510,846)
Loans originated   (1,246,352)
Proceeds from repayment of loans   819,455
Business combinations, net of cash and cash equivalents acquired   (687,634)
Purchase of investments   (66,992)
Dispositions of investments   72,996
Purchases of crypto assets held for investment   (679,931)
Dispositions of crypto assets held for investment   226,371
Other investing activities, net   (90,296)
Customer collateral received   499,417
Return of customer collateral   (514,494)
Proceeds from short-term borrowings   0
Repayments of short-term borrowings   0
Additions of crypto asset investments   176,645
Change in Presentation    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Customer collateral received   (434,129)
Return of customer collateral   434,129
Change in Principle    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Other current and non-current liabilities   2,441,455
Loans originated   (7,671,517)
Proceeds from repayment of loans   7,783,150
Business combinations, net of cash and cash equivalents acquired   21,865
Purchase of investments   (23,711)
Dispositions of investments   215
Purchases of crypto assets held for investment   (10,354)
Dispositions of crypto assets held for investment   37,314
Other investing activities, net   4,007
Customer collateral received   51,356
Return of customer collateral   (51,356)
Proceeds from short-term borrowings   501,316
Repayments of short-term borrowings   (436,510)
Additions of crypto asset investments   $ (10,354)