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INCOME TAXES - Narrative (Details) - Galaxy Digital Holdings, LP - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Effective Income Tax Rate Reconciliation [Line Items]
Entity Not Subject to Income Taxes, Difference in Bases, Amount	$ 1,500,000,000	$ 995,000,000
Unrecognized tax benefits, interest on income taxes expense	1,500,000	1,100,000
Income tax examination, interest accrued			$ 0
Income tax examination, penalties accrued	0	0	$ 0
Deferred tax assets, operating loss carryforwards, subject to expiration	$ 68,400,000	$ 48,100,000

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- Definition

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards that are subject to expiration dates.

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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.

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Represents the net difference between the tax bases and the reported amounts of the assets and liabilities of an entity that is not subject to income taxes because its income is taxed directly to its owners.

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The amount of estimated interest accrued as of the balance sheet date arising from income tax examinations.

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The amount of estimated penalties accrued as of the balance sheet date arising from income tax examinations.

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Amount of interest expense for an underpayment of income taxes.

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