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Accounts Payable and Accrued Liabilities (Tables)

12 Months Ended

Dec. 31, 2017

Subclassifications of assets, liabilities and equities [abstract]

Schedule of Accounts Payable and Accrued Liabilities

	December 31, 2017			December 31, 2016
Trade accounts payable and accrued liabilities	$87.3			$75.6
Royalties payable	4.9			3.6
Interest payable	—			6.1
Share-based compensation liability	4.5			6.8
Derivative liabilities (note 17)	0.1			2.4
		$96.8			$94.5

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