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DERIVATIVES - Collateral Payable Associated With Derivative Positions (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Derivative [Line Items]
Assets posted as collateral associated with derivatives	$ 0	$ 17,375
Galaxy Digital Holdings, LP
Derivative [Line Items]
Collateral payable associated with derivatives	61,060	20,888
Collateral payable — Digital assets
Derivative [Line Items]
Assets posted as collateral associated with derivatives	0	15,284
Collateral payable — Digital assets | Galaxy Digital Holdings, LP
Derivative [Line Items]
Collateral payable associated with derivatives	30,600	9,521
Collateral payable — Cash
Derivative [Line Items]
Assets posted as collateral associated with derivatives	0	2,091
Collateral payable — Cash | Galaxy Digital Holdings, LP
Derivative [Line Items]
Collateral payable associated with derivatives	$ 30,460	$ 11,367

X

- Definition

Derivative Asset, Assets Posted As Collateral

+ References

No definition available.

+ Details

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Namespace Prefix:	glxy_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Fair value of securities received as collateral against derivative assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 12
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483444/210-20-55-12

+ Details

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X

- 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 815
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480237/815-40-50-5

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- Details

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- Details

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- Details

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