Other receivables (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Jun. 30, 2022
Current assets [Abstract]
Share issuances proceeds	$ 1,581	$ 0
Advanced loan proceeds	0	2,320
Provincial sales tax receivable	122	10,023
Interest receivable	0	75
Other receivables	97	1
GST receivable	4,743	11,235
Other receivables	$ 6,543	$ 23,654

The amount of current interest receivable. [Refer: Interest receivable]

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2023-01-01
-Paragraph 112
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2023-03-23

+ Details

Name:	ifrs-full_CurrentInterestReceivable
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of current loans and receivables. [Refer: Loans and receivables]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Note Expired 2023-01-01
-Name IFRS
-Number 7
-IssueDate 2023-01-01
-Paragraph 8
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_8_c&doctype=Standard&book=b
-URIDate 2023-03-23

+ Details

Name:	ifrs-full_CurrentLoansAndReceivables
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of current receivables from taxes other than income tax. [Refer: Receivables from taxes other than income tax]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2023-01-01
-Paragraph 78
-Subparagraph b
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_78_b&doctype=Standard
-URIDate 2023-03-23

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of current other receivables. [Refer: Other receivables]

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
-Number 1
-IssueDate 2023-01-01
-Paragraph 78
-Subparagraph b
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_78_b&doctype=Standard
-URIDate 2023-03-23

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- References

No definition available.

+ Details

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

- Definition

The amount of current provincial sales tax receivables.

+ References

No definition available.

+ Details

Name:	iren_CurrentProvincialSalesTaxReceivable
Namespace Prefix:	iren_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of other receivables classified in other current receivables. [Refer: Other receivables]

+ References

No definition available.

+ Details

Name:	iren_OtherCurrentReceivablesOther
Namespace Prefix:	iren_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of current share issuances proceeds.

+ References

No definition available.

+ Details

Name:	iren_ShareIssuancesProceeds
Namespace Prefix:	iren_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant