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LOANS AND NOTES PAYABLE - Narrative (Details) - Galaxy Digital Holdings, LP - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Debt Instrument [Line Items] |  |  |
Interest expense, Short-term Borrowings | $ 11,500,000 | $ 2,200,000 | $ 6,900,000
Notes interest expense | 30,804,000 | 27,285,000 | 37,029,000
Senior Notes |  |  |
Debt Instrument [Line Items] |  |  |
Promissory note | 847,500,000 | 445,000,000 |
Debt instrument, unamortized discount | 18,500,000 | 7,500,000 |
Interest expense, long-term debt | 14,300,000 | $ 13,400,000 | $ 14,900,000
2026 Exchangeable Notes | Senior Notes |  |  |
Debt Instrument [Line Items] |  |  |
Promissory note | $ 500,000,000 |  |
Debt instrument, interest rate, stated percentage | 3.00% |  |
Common stock, issued (in shares) | 7,498.221 |  |
Common stock, value, issued | $ 250,000 |  |
Debt instrument, unamortized discount | 71,000,000 |  |
Payments of debt issuance costs | $ 13,400,000 |  |
Debt instrument, interest rate, effective percentage | 7.00% |  |
2029 Exchangeable Notes | Senior Notes |  |  |
Debt Instrument [Line Items] |  |  |
Promissory note | $ 402,500,000 |  |
Debt instrument, interest rate, stated percentage | 2.50% |  |
Common stock, issued (in shares) | 10,497.5856 |  |
Common stock, value, issued | $ 250,000 |  |
Debt instrument, unamortized discount | 94,000,000 |  |
Payments of debt issuance costs | $ 13,600,000 |  |
Debt instrument, interest rate, effective percentage | 9.20% |  |

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