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SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) $ in Millions	Dec. 31, 2023 USD ($)
Accounting Policies [Abstract]
Digital assets obligations amount	$ 20.6

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- Definition

Digital Assets Obligations Amount

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No definition available.

+ Details

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

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- References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
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