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Accounts Payable and Accrued Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Subclassifications of assets, liabilities and equities [abstract]
Trade accounts payable and accrued liabilities	$ 137.6	$ 117.7
Royalties payable	3.0	3.3
Share-based compensation liability (note 16)	13.1	9.9
Less: Current portion of decommissioning liability 1	3.3
Current portion of equipment financing obligations	0.4	0.5
Accounts payable and accrued liabilities	$ 157.4	$ 131.4

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Accrued Royalties, Current1

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Current Portion of Equipment Financing Obligations

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Trade Accounts Payable and Accrued Liabilities, Current

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The amount of accruals for employee benefits (other than termination benefits) that are expected to be settled wholly within twelve months after the end of the annual reporting period in which the employees render the related services. [Refer: Accruals classified as current]

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The amount of current provision for decommissioning, restoration and rehabilitation costs. [Refer: Provision for decommissioning, restoration and rehabilitation costs]

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The amount of current trade payables and current other payables. [Refer: Current trade payables; Other current payables]

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