XML 86 R55.htm IDEA: XBRL DOCUMENT
v3.23.1

Other Non-Current Assets (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Subclassifications of assets, liabilities and equities [abstract] |  |
Investment tax credits (Canada) | $ 28.2 | $ 30.4
Esperanza Milestone Payments (i) |  | 0.0
Other | 12.1 | 12.6
Other non-current assets | $ 59.4 | $ 43.0

X
- Definition Investment Tax Credits + References No definition available. + Details
Name: | agi_InvestmentTaxCredits
Namespace Prefix: | agi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Milestone Payments And Cash From Percentage of Silver Produced + References No definition available. + Details
Name: | agi_MilestonePaymentsAndCashFromPercentageOfSilverProduced
Namespace Prefix: | agi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Other + References No definition available. + Details
Name: | agi_Other
Namespace Prefix: | agi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of non-current assets that the entity does not separately disclose in the same statement or note. [Refer: Non-current assets] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2022-03-24 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_55&doctype=Standard -URIDate 2022-03-24 + Details
Name: | ifrs-full_OtherNoncurrentAssets
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | ifrs-full_SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration