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Property, Plant and Equipment
12 Months Ended
Dec. 31, 2022
Disclosure of detailed information about property, plant and equipment [abstract]  
Property, plant and equipment PROPERTY, PLANT AND EQUIPMENT
United States Dollars
31 December 202131 December 2022
Land, mineral rights and rehabilitation assetsMine development, infrastructure and other assetsRight-of-use assets relating to mine development, infrastructure and other assetsTotalTotalRight-of-use assets relating to mine development, infrastructure and other assetsMine development, infrastructure and other assetsLand, mineral rights and rehabilitation assets
Cost
424.3 10,850.8 526.5 11,801.6 Balance at beginning of the year12,169.0 558.1 11,144.0 466.9 
(7.8)10.9 (3.1)— Reclassifications  1.8 (1.8)
1.9 1,086.8 — 1,088.7 Additions1,069.3  1,058.5 10.8 
— 7.5 — 7.5 Salares Norte project costs capitalised6.3  6.3  
— — 54.4 54.4 Right-of-use assets capitalised during the year (refer note 33)47.9 47.9   
— — 19.1 19.1 
Remeasurements of right-of-use assets capitalised (refer note 33)1
11.6 11.6   
— 12.5 — 12.5 
General borrowing costs capitalised2
37.9  37.9  
— (13.4)— (13.4)Disposals(20.9) (20.9) 
(0.9)(427.0)(22.0)(449.9)Scrapping of assets(116.8)(20.3)(90.7)(5.8)
66.1 — — 66.1 Changes in estimates of rehabilitation assets(22.1)  (22.1)
(16.7)(384.1)(16.8)(417.6)Translation adjustment(389.4)(19.2)(354.2)(16.0)
466.9 11,144.0 558.1 12,169.0 Balance at end of the year12,792.8 578.1 11,782.7 432.0 
Accumulated depreciation and impairment
72.4 6,860.1 97.9 7,030.4 Balance at beginning of the year7,089.9 146.2 6,851.3 92.4 
20.6 622.8 69.8 713.2 Charge for the year844.3 72.6 746.1 25.6 
— 1.8 5.2 7.0 Salares Norte depreciation capitalised4.0 1.7 2.3  
— 11.6 — 11.6 Impairment391.4 44.5 339.3 7.6 
— 21.3 — 21.3 
Write-off of exploration and evaluation assets3
    
— (12.2)— (12.2)Disposals(19.9) (19.9) 
(0.9)(427.0)(22.0)(449.9)Scrapping of assets(116.8)(20.3)(90.7)(5.8)
0.3 (227.1)(4.7)(231.5)Translation adjustment(215.8)(4.9)(209.5)(1.4)
92.4 6,851.3 146.2 7,089.9 Balance at end of the year7,977.1 239.8 7,618.9 118.4 
374.5 4,292.7 411.9 5,079.1 Carrying value at end of the year4,815.7 338.3 4,163.8 313.6 
1    The re-measurements in 2022 relate mainly to leases at the Group’s Australian operations that have variable payments linked to the Australian consumer price index (“CPI”). (2021: Leases at the Group’s Australian operations that have variable payments linked to the Australian consumer price index (“CPI”), as well as the leases relating to Tarkwa's power purchase agreement that changed due to a change in the life-of mine).
2    General borrowing costs of US37.9 million (2021: US$12.5 million) arising on Group general borrowings were capitalised during the period and related to the Salares Norte project. An average interest capitalisation rate of 6.4% (2021: 5.9%) was applied. In February 2020, the Salares Norte project was approved by the Board and capital expenditure commenced in April 2020, resulting in capitalisation of borrowing costs from that date.
3    The write-off of exploration and evaluation assets in 2021 was due to specific exploration programmes not yielding results to warrant further exploration at the Group’s Australian operations. The US$21.3 million was included in the US$60.6 million “Exploration expense” in the consolidated income statement in 2021.