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Financial risk management - Credit risk - Aging of trade and other receivables (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
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AGING TRADE AND OTHER RECEIVABLES |  |
Trade and other receivables | $ 14.1 | $ 26.4
Rainy River |  |
AGING TRADE AND OTHER RECEIVABLES |  |
Trade and other receivables | 8.0 | 3.5
New Afton |  |
AGING TRADE AND OTHER RECEIVABLES |  |
Trade and other receivables | 3.7 | 6.1
Cerro San Pedro |  |
AGING TRADE AND OTHER RECEIVABLES |  |
Trade and other receivables | 1.3 | 2.5
Corporate |  |
AGING TRADE AND OTHER RECEIVABLES |  |
Trade and other receivables | 1.1 | $ 14.3
0-30 days |  |
AGING TRADE AND OTHER RECEIVABLES |  |
Trade and other receivables | 13.0 |
0-30 days | Rainy River |  |
AGING TRADE AND OTHER RECEIVABLES |  |
Trade and other receivables | 8.0 |
0-30 days | New Afton |  |
AGING TRADE AND OTHER RECEIVABLES |  |
Trade and other receivables | 2.6 |
0-30 days | Cerro San Pedro |  |
AGING TRADE AND OTHER RECEIVABLES |  |
Trade and other receivables | 1.3 |
0-30 days | Corporate |  |
AGING TRADE AND OTHER RECEIVABLES |  |
Trade and other receivables | 1.1 |
31-60 days |  |
AGING TRADE AND OTHER RECEIVABLES |  |
Trade and other receivables | 1.6 |
31-60 days | Rainy River |  |
AGING TRADE AND OTHER RECEIVABLES |  |
Trade and other receivables | 0.0 |
31-60 days | New Afton |  |
AGING TRADE AND OTHER RECEIVABLES |  |
Trade and other receivables | 1.6 |
31-60 days | Cerro San Pedro |  |
AGING TRADE AND OTHER RECEIVABLES |  |
Trade and other receivables | 0.0 |
31-60 days | Corporate |  |
AGING TRADE AND OTHER RECEIVABLES |  |
Trade and other receivables | 0.0 |
61-90 days |  |
AGING TRADE AND OTHER RECEIVABLES |  |
Trade and other receivables | 0.0 |
61-90 days | Rainy River |  |
AGING TRADE AND OTHER RECEIVABLES |  |
Trade and other receivables | 0.0 |
61-90 days | New Afton |  |
AGING TRADE AND OTHER RECEIVABLES |  |
Trade and other receivables | 0.0 |
61-90 days | Cerro San Pedro |  |
AGING TRADE AND OTHER RECEIVABLES |  |
Trade and other receivables | 0.0 |
61-90 days | Corporate |  |
AGING TRADE AND OTHER RECEIVABLES |  |
Trade and other receivables | 0.0 |
91-120 days |  |
AGING TRADE AND OTHER RECEIVABLES |  |
Trade and other receivables | (0.5) |
91-120 days | Rainy River |  |
AGING TRADE AND OTHER RECEIVABLES |  |
Trade and other receivables | 0.0 |
91-120 days | New Afton |  |
AGING TRADE AND OTHER RECEIVABLES |  |
Trade and other receivables | (0.5) |
91-120 days | Cerro San Pedro |  |
AGING TRADE AND OTHER RECEIVABLES |  |
Trade and other receivables | 0.0 |
91-120 days | Corporate |  |
AGING TRADE AND OTHER RECEIVABLES |  |
Trade and other receivables | 0.0 |
Over 120 days |  |
AGING TRADE AND OTHER RECEIVABLES |  |
Trade and other receivables | 0.0 |
Over 120 days | Rainy River |  |
AGING TRADE AND OTHER RECEIVABLES |  |
Trade and other receivables | 0.0 |
Over 120 days | New Afton |  |
AGING TRADE AND OTHER RECEIVABLES |  |
Trade and other receivables | 0.0 |
Over 120 days | Cerro San Pedro |  |
AGING TRADE AND OTHER RECEIVABLES |  |
Trade and other receivables | 0.0 |
Over 120 days | Corporate |  |
AGING TRADE AND OTHER RECEIVABLES |  |
Trade and other receivables | $ 0.0 |

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- Definition The amount of current trade receivables and current other receivables. [Refer: Current trade receivables; Other current receivables] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2022-03-24 -Paragraph 54 -Subparagraph h -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_54_h&doctype=Standard -URIDate 2022-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2022-03-24 -Paragraph 78 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_78_b&doctype=Standard -URIDate 2022-03-24 + Details
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