XML 53 R35.htm IDEA: XBRL DOCUMENT v3.22.4

Accounts Payable and Accrued Liabilities (Tables)

12 Months Ended

Dec. 31, 2022

Subclassifications of assets, liabilities and equities [abstract]

Schedule of Accounts Payable and Accrued Liabilities

			December 31, 2022			December 31, 2021
Trade accounts payable and accrued liabilities			$147.6			$137.6
Royalties payable			2.2			3.0
Derivative liabilities (note 18)			4.2			—
Share-based compensation liability			18.3			13.1
Current portion of decommissioning liability			8.5			3.3
Current portion of equipment financing obligations			0.4			0.4
			$181.2			$157.4

X

- Definition

Schedule of Accounts Payable and Accrued Liabilities1 [Table Text Block]

+ References

No definition available.

+ Details

Name:	agi_ScheduleofAccountsPayableandAccruedLiabilities1TableTextBlock
Namespace Prefix:	agi_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	ifrs-full_SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration