XML 109 R53.htm IDEA: XBRL DOCUMENT

Property, plant and equipment (Tables)

12 Months Ended

Dec. 31, 2021

Disclosure of detailed information about property, plant and equipment [abstract]

Summary of property, plant and equipment


			Land and buildings			Plant and equipment			Capital works in progress			Mineral properties			Capitalized Evaluation			Total
Cost
Balance at January 1, 2020			$	242,511		$	2,319,388		$	83,078		$	4,103,005		$	96,707		$	6,844,689
Additions/transfers			14,737			82,285			61,135			55,971			2,115			216,243




Write-down of assets			—			—			(40,030)			—			—			(40,030)
Other movements/transfers			1,841			22,371			(20,594)			(2,217)			(28)			1,373

Disposals			(402)			(10,297)			(76)			—			(102)			(10,877)
Balance at December 31, 2020			$	258,687		$	2,413,747		$	83,513		$	4,156,759		$	98,692		$	7,011,398


Additions/transfers			$	12,204		$	80,760		$	134,237		$	85,607		$	3,256		$	316,064
Acquisition of QMX Gold Corporation			2,357			1,649			—			78,852			—			82,858
Impairment			—			—			(3,923)			—			—			(3,923)
Write-down of assets			—			(3,520)			—			(3,610)			—			(7,130)
Other movements/transfers			(2,539)			96,476			(104,014)			(870)			—			(10,947)
Assets disposed of in the sale of Tocantinzinho			—			(3,693)			—			(108,282)			(98,595)			(210,570)
Disposals			(1,638)			(10,511)			—			(983)			(16)			(13,148)
Balance at December 31, 2021			$	269,071		$	2,574,908		$	109,813		$	4,207,473		$	3,337		$	7,164,602

Accumulated depreciation
Balance at January 1, 2020			$	(58,778)		$	(1,024,583)		$	—		$	(1,670,076)		$	—		$	(2,753,437)
Depreciation for the year			(13,898)			(132,735)			—			(71,315)			—			(217,948)


Other movements			(125)			(1,985)			—			247			—			(1,863)

Disposals			54			3,880			—			115			—			4,049
Balance at December 31, 2020			$	(72,747)		$	(1,155,423)		$	—		$	(1,741,029)		$	—		$	(2,969,199)


Depreciation for the year			$	(8,736)		$	(127,795)		$	—		$	(66,280)		$	—		$	(202,811)
(Impairment) reversal			—			(10,939)			—			936			—			(10,003)
Other movements			771			8,940			—			1,198			—			10,909
Assets disposed of in the sale of Tocantinzinho			—			2,964			—			—			—			2,964
Disposals			1,121			5,627			—			1			—			6,749
Balance at December 31, 2021			$	(79,591)		$	(1,276,626)		$	—		$	(1,805,174)		$	—		$	(3,161,391)

Carrying amounts
At January 1, 2020			$	183,733		$	1,294,805		$	83,078		$	2,432,929		$	96,707		$	4,091,252
At December 31, 2020			$	185,940		$	1,258,324		$	83,513		$	2,415,730		$	98,692		$	4,042,199
Balance at December 31, 2021			$	189,480		$	1,298,282		$	109,813		$	2,402,299		$	3,337		$	4,003,211

Summary of key assumptions used for assessing recoverable amount of company's CGUs versus carrying values


			2021			2020
Gold price ($/oz)			$1,800 - $1,550			$1,850 - $1,550
Silver price ($/oz)			$24 - $21			$25 - $21
Lead price ($/t)			$2,150 - $2,050			$2,000 - $1,975
Zinc price ($/t)			$2,825 - $2,500			$2,575 - $2,400
Discount rate			6.0% - 6.5%			6.0% - 6.5%