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RELATED PARTY TRANSACTIONS - Narrative (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Galaxy Digital Holdings, LP |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Distributions | $ 55,258,000 | $ 22,405,000 | $ 184,275,000 |
General and administrative | 279,297,000 | 58,351,000 | 148,770,000 |
Financial guarantee | 0 | 0 | $ 0 |
Interest | $ 15,530,000 | $ 4,595,000 |  |
Options, grants in period (in shares) | 2,913,051 | 10,963,780 | 1,565,000 |
Stock-based compensation | $ 75,017,000 | $ 83,790,000 | $ 89,860,000 |
Galaxy Digital Holdings, LP | Restricted Stock (Restricted Stock, Restricted Stock Units and Deferred Share Units) |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Granted / transferred (in shares) | 3,439,035 | 4,983,339 | 6,718,554 |
Galaxy Interactive Fund I, LP |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Fair value of investments | $ 1,000,000 | $ 2,400,000 |  |
Related Party | Galaxy Digital Holdings, LP |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Related party transaction, amounts of transaction | 41,686,000 | 45,840,000 | $ 31,185,000 |
Distributions | 55,300,000 | 22,400,000 | 184,300,000 |
Fair value of investments | 12,900,000 | 11,000,000.0 |  |
General and administrative | 3,200,000 | 2,200,000 | 2,500,000 |
Accounts payable | 95,800,000 | 66,000,000.0 |  |
Advisory fees | 2,100,000 | 900,000 | 1,000,000 |
Use of food and beverage consumption fees | 20,000.00 | 100,000 |  |
GGI fees | 400,000 |  |  |
Options, grants in period (in shares) |  |  |  | 500,000
Stock-based compensation | 5,000,000.0 | 11,900,000 | 11,600,000 |
Tax payments | 4,800,000 | 2,900,000 |  |
Indemnification payments amount |  | 4,900,000 |  |
Related Party | Galaxy Digital Holdings, LP | Restricted Stock (Restricted Stock, Restricted Stock Units and Deferred Share Units) |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Granted / transferred (in shares) |  |  |  | 1,500,000
Related Party | Directors | Galaxy Digital Holdings, LP |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Related party transaction, amounts of transaction | 700,000 | 800,000 | $ 800,000 |
Related Party | Promissory Note | Galaxy Digital Holdings, LP |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Promissory note | 96,900,000 | 67,200,000 |  |
Interest | 0 | 0 |  |
Related Party | Candy Digital Inc | Galaxy Digital Holdings, LP |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Fair value of investments | 9,100,000 | 18,000,000.0 |  |
Related Party | GDH Ltd | Galaxy Digital Holdings, LP |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Consulting agreement, expense | $ 1,000,000.0 | $ 1,000,000.0 |  |

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