Supplemental Cash Flow Information (Tables)

12 Months Ended

Dec. 31, 2018

Disclosure of Cash Flow Statement [Abstract]

Schedules of Cash Flow, Supplemental Disclosures

Changes in working capital and income taxes received or paid for the years ended:

	December 31,		December 31,
	2018		2017
Amounts receivable	($7.9	)	$14.0
Inventory	13.9		(15.9	)
Advances and prepaid expenses	(7.2	)	(4.3	)
Accounts payable and accrued liabilities	7.6		(12.1	)
Income taxes paid	(4.2	)	(1.5	)
	$2.2		($19.8	)
Interest received	$2.8		$2.5

Other items for the years ended:

	December 31,			December 31,
	2018			2017
Unrealized loss on non-hedging derivatives		$0.4			$0.3
Payment for reclamation activities	(0.9		)	—
Reduction of obligation to renounce flow-through exploration expenditures	(0.6		)	(2.3		)
Loss on disposal of assets	6.1			1.9
Payment of transaction costs incurred by Richmont Mines (note 5)	—			(5.9		)
Share-based payments related to Richmont Mines transaction (note 5)	—			1.3
Other non-cash items	0.5			3.3
	$5.5			($1.4		)

Schedule of Other Significant Noncash Transactions

Other items for the years ended:

	December 31,			December 31,
	2018			2017
Unrealized loss on non-hedging derivatives		$0.4			$0.3
Payment for reclamation activities	(0.9		)	—
Reduction of obligation to renounce flow-through exploration expenditures	(0.6		)	(2.3		)
Loss on disposal of assets	6.1			1.9
Payment of transaction costs incurred by Richmont Mines (note 5)	—			(5.9		)
Share-based payments related to Richmont Mines transaction (note 5)	—			1.3
Other non-cash items	0.5			3.3
	$5.5			($1.4		)