Accounts Payable and Accrued Liabilities (Tables)

12 Months Ended

Dec. 31, 2018

Subclassifications of assets, liabilities and equities [abstract]

Schedule of Accounts Payable and Accrued Liabilities

	December 31, 2018		December 31, 2017
Trade accounts payable and accrued liabilities	$104.4		$87.3
Royalties payable	4.8		4.9
Share-based compensation liability	1.6		4.5
Current portion of equipment financing obligations	2.6		4.2
Derivative liabilities (note 16)	5.3		0.1
		$118.7		$101.0