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Commitments (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Commitments [Line Items] |  |
Capital purchases commitments | $ 123.8 | $ 36.1
Royalties | 11.7 | 10.2
Royal Gold [Member] |  |
Commitments [Line Items] |  |
Extraordinary mining duty tax | 1.1 | 1.3
Island Gold [Member] |  |
Commitments [Line Items] |  |
Royalties | 5.3 | 5.2
Net Smelter Royalty [Member] | AuRico Metals [Member] |  |
Commitments [Line Items] |  |
Royalties | $ 5.3 | 3.3
Royalty rate | 1.50% |
Net Smelter Royalty [Member] | Island Gold [Member] |  |
Commitments [Line Items] |  |
Royalty rate | 2.20% |
Other Royalties [Member] | AuRico Metals [Member] |  |
Commitments [Line Items] |  |
Royalties |  | $ 0.4

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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 2021-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_112_c&doctype=Standard -URIDate 2021-03-24 + 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 2021-01-01 -Paragraph 85 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_85&doctype=Standard -URIDate 2021-03-24 + Details
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