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BUSINESS COMBINATIONS - Narrative (Details) - Galaxy Digital Holdings, LP - USD ($) $ in Millions |  |  |  |  | 12 Months Ended
--- | --- | --- | --- | --- | ---
Feb. 28, 2025 | Dec. 09, 2024 | Jul. 18, 2024 | Feb. 21, 2023 | Dec. 31, 2024 | Dec. 31, 2023
Customer Relationships |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Finite-lived intangible asset, useful life |  |  | 5 years | 3 years |  |
Trademarks and Trade Names |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Finite-lived intangible asset, useful life |  |  |  | 3 years |  |
Technology Valued |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Finite-lived intangible asset, useful life |  |  |  | 5 years |  |
Fierce Company |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Business combination, consideration transferred |  | $ 12.5 |  |  |  |
Payments to acquire businesses, gross |  | 3.0 |  |  |  |
Business combination, consideration transferred, equity interests issued and issuable |  | 9.5 |  |  |  |
Business combination, contingent consideration, liability |  | 1.2 |  |  |  |
Business combination recognized identifiable assets acquired and liabilities assumed, deferred tax assets |  | 3.3 |  |  |  |
Business acquisition, transaction costs |  | 0.2 |  |  |  |
Fierce Company | Trade Names |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Intangible assets |  | $ 0.4 |  |  |  |
CryptoManufaktur |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Business combination, consideration transferred |  |  | $ 12.4 |  |  |
Business combination, contingent consideration, liability |  |  | 5.5 |  |  |
Business acquisition, transaction costs |  |  | 0.5 |  |  |
Business combination, consideration transferred, equity interests issued and issuable (in shares) | 76,573 |  |  |  |  |
Business acquisition, pro forma revenue |  |  |  |  | $ 22.0 | $ 21.0
Business acquisition, pro forma net income (loss) |  |  |  |  | $ 2.0 | $ 1.0
CryptoManufaktur | Customer Relationships |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Intangible assets |  |  | $ 7.2 |  |  |
GK8 |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Business combination, consideration transferred |  |  |  | $ 44.0 |  |
Business combination, contingent consideration, liability |  |  |  | 44.0 |  |
Business acquisition, goodwill, expected tax deductible amount |  |  |  | 17.2 |  |
Business acquisition, transaction costs |  |  |  | 2.3 |  |
GK8 | Customer Relationships |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Intangible assets |  |  |  | 2.9 |  |
GK8 | Trademarks and Trade Names |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Intangible assets |  |  |  | 3.2 |  |
GK8 | Technology Valued |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Intangible assets |  |  |  | $ 17.2 |  |

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