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Financial instruments - Price Risk (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Price Risk
Disclosure of credit risk exposure [abstract]
Bitcoin held	$ 0	$ 0

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- References

No definition available.

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The amount of bitcoin held during the period.

+ References

No definition available.

+ Details

Name:	iren_BitcoinsHeld
Namespace Prefix:	iren_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

Name:	ifrs-full_TypesOfRisksAxis=iren_PriceRiskMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: