Property, plant and equipment

12 Months Ended

Dec. 31, 2017

Statement [Line Items]

Property, plant and equipment [text block]

11. Property, plant and equipment

		Exploration
		and		Capital
		evaluation		works in			Mining			Plant and
Dec. 31, 2017		assets		progress			properties			equipment			Total
Cost
Balance, beginning of year	$	15,015	$	844,759		$	1,775,432		$	2,368,658		$	5,003,864
Additions		7,000		156,807			-			26,830			190,637
Capitalized stripping and development		-		-			69,178			-			69,178
Decommissioning and restoration		-		51			5,509			5,101			10,661
Interest capitalized		-		13,149			-			-			13,149
Transfers and other movements		-		(79,671	)		-			79,671			-
Impairment		-		(11,320	)		-			-			(11,320	)
Disposals		-		(13	)		(1,600	)		(9,586	)		(11,199	)
Effects of movement in exchange rates		995		2,955			49,184			47,553			100,687
Other		-		6,814			85			455			7,354
Balance, end of year		23,010		933,531			1,897,788			2,518,682			5,373,011
Accumulated depreciation
Balance, beginning of year		-		-			523,460			614,581			1,138,041
Depreciation for the year		-		-			118,754			182,552			301,306
Disposals		-		-			-			(7,540	)		(7,540	)
Effects of movement in exchange rates		-		-			31,516			28,741			60,257
Other		-		-			(19	)		72			53
Balance, end of year		-		-			673,711			818,406			1,492,117
Net book value	$	23,010	$	933,531		$	1,224,077		$	1,700,276		$	3,880,894

		Exploration
		and		Capital
		evaluation		works in			Mining		Plant and
Dec. 31, 2016		assets		progress			properties		equipment			Total
Cost
Balance, beginning of year	$	14,650	$	812,618		$	1,603,952	$	2,289,556		$	4,720,776
Additions		-		87,505			45,383		15,445			148,333
Capitalized stripping and
development		-		19,666			48,886		-			68,552
Decommissioning and restoration		-		(46	)		1,966		23,036			24,956
Interest capitalized		-		14,705			-		-			14,705
Transfers and other movements		-		(89,506	)		56,848		32,658			-
Disposals		-		(1,501	)		-		(11,089	)		(12,590	)
Effects of movement in exchange rates		365		1,334			18,382		18,897			38,978
Other		-		(16	)		15		155			154
Balance, end of year		15,015		844,759			1,775,432		2,368,658			5,003,864
Accumulated depreciation
Balance, beginning of year		-		-			394,098		436,402			830,500
Depreciation for the year		-		-			119,420		178,175			297,595
Disposals		-		-			-		(9,160	)		(9,160	)
Effects of movement in exchange rates		-		-			9,810		9,076			18,886
Other		-		-			132		88			220
Balance, end of year		-		-			523,460		614,581			1,138,041
Net book value	$	15,015	$	844,759		$	1,251,972	$	1,754,077		$	3,865,823

Refer to note 3i for a description of depreciation methods used by the Group and note 3i(iv) for depreciation rates of major classes of assets. Depreciation of property, plant and equipment and intangible assets related to producing properties is initially recognized in inventory and is then transferred to the cost of sales in the consolidated income statements as sales occur. Refer to note 5b for amounts recognized in the consolidated income statements.

For non-financial assets, management examined internal and external indicators of impairment or reversals. With the exception of certain mill assets currently stored in Winnipeg, Manitoba (refer to note 5g), no indicators of impairment or reversals of non-financial assets as at year ended December 31, 2017 were found.