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Amounts Receivable (Tables)

12 Months Ended

Dec. 31, 2021

Subclassifications of assets, liabilities and equities [abstract]

Schedule of Receivables

			December 31, 2021			December 31, 2020
Sales tax receivables
Canada			6.5			$5.4
Mexico			18.7			17.7
Other			1.9			4.0
Other receivables			4.0			7.6
			$31.1			$34.7

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