Ifrs Statement Line Items

No definition available.

Name:	groy_IfrsStatementLineItems
Namespace Prefix:	groy_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Land agreement proceeds received from royalty and other mineral interests.

+ References

No definition available.

+ Details

Name:	groy_LandAgreementProceedsReceivedFromRoyaltyAndOtherMineralInterests
Namespace Prefix:	groy_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Net smelter return percentage.

+ References

No definition available.

+ Details

Name:	groy_NetSmelterReturnPercentage
Namespace Prefix:	groy_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Ongoing payments value.

+ References

No definition available.

+ Details

Name:	groy_OngoingPaymentsValue
Namespace Prefix:	groy_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Percentage of effective payables.

+ References

No definition available.

+ Details

Name:	groy_PercentageOfEffectivePayables
Namespace Prefix:	groy_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of ongoing payments.

+ References

No definition available.

+ Details

Name:	groy_PercentageOfOngoingPayments
Namespace Prefix:	groy_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Royalty, streaming and other mineral interest carrying value.

+ References

No definition available.

+ Details

Name:	groy_RoyaltyStreamingAndOtherMineralInterestCarryingValue
Namespace Prefix:	groy_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Streams percentage owned.

+ References

No definition available.

+ Details

Name:	groy_StreamsPercentageOwned
Namespace Prefix:	groy_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Transaction cost of stream carrying value.

+ References

No definition available.

+ Details

Name:	groy_TransactionCostOfStreamCarryingValue
Namespace Prefix:	groy_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The fair value, at acquisition date, of the consideration transferred in a business combination. [Refer: Total for all business combinations [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 3
-IssueDate 2024-01-01
-Paragraph B64
-Subparagraph f
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2024-en-r&anchor=para_B64_f&doctype=Appendix&subtype=B
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_AcquisitiondateFairValueOfTotalConsiderationTransferred
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The fair value, at acquisition date, of cash transferred as consideration in a business combination. [Refer: Total for all business combinations [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 3
-IssueDate 2024-01-01
-Paragraph B64
-Subparagraph f
-Clause i
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2024-en-r&anchor=para_B64_f_i&doctype=Appendix&subtype=B
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_CashTransferred
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount of consideration paid or received in respect of both obtaining and losing control of subsidiaries or other businesses. [Refer: Total for all subsidiaries [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 7
-IssueDate 2024-01-01
-Paragraph 40
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_40_a&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_ConsiderationPaidReceived
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The number of shares issued by the entity.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 106
-Subparagraph d
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_106_d&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_NumberOfSharesIssued
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	ifrs-full_CounterpartiesAxis=groy_VaresCopperStreamMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ClassesOfAssetsAxis=groy_OtherMineralInterestsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=groy_CoteGoldProjectMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=groy_CoteGoldMineMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ClassesOfAssetsAxis=groy_RoyaltiesOnDevelopmentStageAssetsToRoyaltiesOnProductionStageAssetsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Royalties, Streaming and Other Mineral Interests (Details Narrative) - USD ($) $ in Thousands		12 Months Ended
	Jun. 04, 2024	Dec. 31, 2024	Dec. 31, 2023	Jun. 20, 2024	Jun. 18, 2024	May 25, 2022
IfrsStatementLineItems [Line Items]
Land agreement proceeds		$ 1,663	$ 1,909
Vares Copper Stream [Member]
IfrsStatementLineItems [Line Items]
Streams percentage owned	100.00%
Satisfied in cash	$ 45,000
Satisfied by issuing shares	5,000
Fair value of puchase consideration	$ 50,000
Transaction cost of stream carrying value		884
Number of shares issued	2,906,977
Ongoing payments		268
Ongoing payments required to be made, percentage	30.00%
Effective payable copper fixed at percentage	24.50%
Other Mineral Interests [Member]
IfrsStatementLineItems [Line Items]
Fair value of puchase consideration				$ 112	$ 112
Net smelter return percentage					2.00%
Cote Gold Project [member]
IfrsStatementLineItems [Line Items]
Number of shares issued						50,000
Cote Gold Mine [Member] \| Royalties on development stage assets to royalties on production stage assets [member]
IfrsStatementLineItems [Line Items]
Carrying amount		$ 16,132