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Commitments (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
Commitments [Line Items] |  |
Capital purchases commitments | $ 155.4 | $ 123.8
Royalties | 9.1 | 11.7
Outstanding commitments made by entity, related party transactions | 115.1 | 89.4
Royal Gold [Member] |  |
Commitments [Line Items] |  |
Extraordinary mining duty tax | 1.2 | 1.1
Island Gold |  |
Commitments [Line Items] |  |
Royalties | 2.6 | 5.3
Net Smelter Royalty [Member] | AuRico Metals [Member] |  |
Commitments [Line Items] |  |
Royalties | $ 5.3 | $ 5.3
Royalty rate | 1.50% |
Net Smelter Royalty [Member] | Island Gold |  |
Commitments [Line Items] |  |
Royalty rate | 2.20% |

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- Definition The amount of capital commitments for which the entity has entered into a contract. [Refer: Capital commitments] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2022-03-24 -Paragraph 112 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_112_c&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition The amount of outstanding commitments made by the entity in related party transactions. [Refer: Related parties [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 24 -IssueDate 2022-03-24 -Paragraph 18 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=24&code=ifrs-tx-2022-en-r&anchor=para_18_b&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition The amount of expense arising from royalties. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2022-03-24 -Paragraph 85 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_85&doctype=Standard -URIDate 2022-03-24 + Details
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