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FAIR VALUE OPTION - Schedule of Fair Value Option (Details) - Galaxy Digital Holdings, LP - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Fair Value, Option, Quantitative Disclosures [Line Items]
Total	$ 1,041,877	$ 917,757	$ 472,915
Digital financial assets
Fair Value, Option, Quantitative Disclosures [Line Items]
Total	514,479	359,664	74,386
Investments
Fair Value, Option, Quantitative Disclosures [Line Items]
Total	$ 527,398	$ 558,093	$ 398,529

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- Definition

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+ References

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 30
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-30

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 31
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-31

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-32

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