XML 52 R21.htm IDEA: XBRL DOCUMENT
v3.23.1

Other Gain (Loss) | 12 Months Ended
--- | ---
Dec. 31, 2022
Other Gain (Loss) [Abstract] |
Other (Loss) Gain |
15. | OTHER LOSS
Other loss recorded in net earnings (loss) for the years ended:
| December 31, | December 31,
| 2022 | 2021
Unrealized (loss) gain on non-hedging derivatives | ($0.3) |  | $0.4 |
Reduction of obligation to renounce flow-through exploration expenditures | 2.7 |  | — |
Turkish Projects holding and arbitration costs | (5.0) |  | (1.6) |
Fair value adjustment for sale of silver stream (note 14) | 2.6 |  | — |
Fair value adjustment for Milestone payments (note 14) | (1.1) |  | — |
Holding costs related to the El Chanate mine | (1.0) |  | (1.0) |
Loss on disposal of assets | (0.7) |  | (1.5) |
Severance costs related to Turkish Projects | — |  | (0.9) |
Other | (2.3) |  | (2.6) |
| ($5.1) |  | ($7.2) |

X
- Definition Other Gain (Loss) [Abstract] + References No definition available. + Details
Name: | agi_OtherGainLossAbstract
Namespace Prefix: | agi_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The disclosure of other operating income or expense. [Refer: Other operating income (expense)] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2022-03-24 -Paragraph 10 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_10_e&doctype=Standard -URIDate 2022-03-24 + Details
Name: | ifrs-full_DisclosureOfOtherOperatingIncomeExpenseExplanatory
Namespace Prefix: | ifrs-full_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration