XML 106 R49.htm IDEA: XBRL DOCUMENT

Property, plant and equipment (Tables)

12 Months Ended

Dec. 31, 2022

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			Pre-development properties			Total
Cost
Balance at January 1, 2021			$	222,908		$	2,400,876		$	83,513		$	3,431,908		$	872,193		$	7,011,398
Additions/transfers			12,139			80,815			134,237			72,192			16,681			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)			—			(696)			(2,914)			(7,130)
Other movements/transfers			(2,539)			96,373			(104,014)			(865)			98			(10,947)
Assets disposed of in the sale of Tocantinzinho			—			—			—			—			(210,570)			(210,570)
Disposals			(1,603)			(8,014)			—			(648)			(2,883)			(13,148)
Balance at December 31, 2021			$	233,262		$	2,568,179		$	109,813		$	3,580,743		$	672,605		$	7,164,602

Balance at January 1, 2022			$	233,262		$	2,568,179		$	109,813		$	3,580,743		$	672,605		$	7,164,602
Additions/transfers			7,420			21,901			181,216			84,065			(3,139)			291,463

(Write-down) recovery of assets			(44)			(37,264)			(343)			225			(906)			(38,332)
Other movements/transfers			4,691			77,274			(167,081)			86,821			—			1,705
Assets reclassified as held for sale			—			—			—			—			(425,587)			(425,587)
Disposals			(1,997)			(6,357)			—			(12)			(272)			(8,638)
Balance at December 31, 2022			$	243,332		$	2,623,733		$	123,605		$	3,751,842		$	242,701		$	6,985,213

Accumulated depreciation
Balance at January 1, 2021			$	(70,657)		$	(1,149,283)		$	—		$	(1,737,527)		$	(11,732)		$	(2,969,199)
Depreciation for the year			(8,285)			(127,287)			—			(66,254)			—			(201,826)
(Impairment) reversal			—			(10,939)			—			936			—			(10,003)

Other movements			771			9,043			—			1,198			(1,088)			9,924
Assets disposed of in the sale of Tocantinzinho			—			—			—			—			2,964			2,964
Disposals			1,087			5,262			—			—			400			6,749
Balance at December 31, 2021			$	(77,084)		$	(1,273,204)		$	—		$	(1,801,647)		$	(9,456)		$	(3,161,391)

Balance at January 1, 2022			$	(77,084)		$	(1,273,204)		$	—		$	(1,801,647)		$	(9,456)		$	(3,161,391)
Depreciation for the year			(14,303)			(139,188)			—			(96,999)			—			(250,490)
Write-down of assets			—			12,475			—			—			—			12,475
Impairment			—			—			—			—			(394,723)			(394,723)
Other movements			261			(1,752)			—			(820)			(654)			(2,965)
Assets reclassified as held for sale			—			—			—			—			400,856			400,856
Disposals			1,491			5,542			—			—			254			7,287
Balance at December 31, 2022			$	(89,635)		$	(1,396,127)		$	—		$	(1,899,466)		$	(3,723)		$	(3,388,951)

Carrying amounts
At January 1, 2021			$	152,251		$	1,251,593		$	83,513		$	1,694,381		$	860,461		$	4,042,199
At December 31, 2021			$	156,178		$	1,294,975		$	109,813		$	1,779,096		$	663,149		$	4,003,211
Balance at December 31, 2022			$	153,697		$	1,227,606		$	123,605		$	1,852,376		$	238,978		$	3,596,262

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


			2022			2021
Gold price ($/oz)			$1,725 - $1,600			$1,800 - $1,550
Silver price ($/oz)			$22 - $21			$24 - $21
Lead price ($/t)			$2,050 - $2,000			$2,150 - $2,050
Zinc price ($/t)			$3,000 - $2,550			$2,825 - $2,500
Discount rate			7.0% - 7.5%			6.0% - 6.5%
VBPP fair value ($)			$361,352			$330,848
VBPP fair value ($/oz)			$224			$251