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v3.25.1

Share-based payments - Employee Share Plan (Details) | 12 Months Ended
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Jun. 30, 2024 tranche
Employee Share Plan [Abstract] |
Number of tranches | 3
Maximum |
Employee Share Plan [Abstract] |
Term of limited recourse loan | 9 years 11 months

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- Definition Employee share plan [Abstract] + References No definition available. + Details
Name: | iren_EmployeeSharePlanAbstract
Namespace Prefix: | iren_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Number of employment service tranches. + References No definition available. + Details
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Namespace Prefix: | iren_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- Definition The term of limited resource loan issued by an entity, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | iren_TermOfLimitedResourceLoan
Namespace Prefix: | iren_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | ifrs-full_RangeAxis=ifrs-full_TopOfRangeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |