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GOODWILL AND OTHER INTANGIBLE ASSETS - Schedule of Goodwill (Details) - Galaxy Digital Holdings, LP - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Goodwill [Roll Forward]
Balance, beginning of period	$ 58,037	$ 44,257	$ 24,645
Additions due to acquisitions (Note 3)	0	13,780	19,612
Balance, end of period	$ 58,037	$ 58,037	$ 44,257

X

- Definition

Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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- Definition

Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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