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Judgements and estimation uncertainty | 12 Months Ended
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Dec. 31, 2022
Judgements and Estimation Uncertainty [Abstract] |
Judgements and estimation uncertainty | 4. Judgements and estimation uncertainty The preparation of consolidated financial statements in conformity with IFRS requires management to make judgements, estimates and assumptions that affect the application of accounting policies and the reported amounts of assets, liabilities, income and expenses. Actual results may differ from these estimates. Estimates and underlying assumptions are reviewed at each period end. Revisions to accounting estimates are recognized in the period in which the estimates are revised and in any future periods affected. Significant areas requiring the use of management assumptions, estimates and judgements include the valuation of property, plant and equipment and goodwill, estimated recoverable mineral reserves and mineral resources, inventory, asset retirement obligations and current and deferred taxes. Actual results could differ from these estimates. Outlined below are some of the areas which require management to make significant judgements, estimates and assumptions. (i) Valuation of property, plant and equipment and goodwill Property, plant and equipment and goodwill are tested for impairment when events or changes in circumstances suggest that the carrying amount may not be fully recoverable. Goodwill is tested at least annually. Calculating the recoverable amount, including estimated FVLCD of CGUs for property, plant and equipment and goodwill, requires management to make estimates and assumptions with respect to discount rates, future production levels including amount of recoverable reserves, resources and exploration potential, operating and capital costs, long-term metal prices, and estimates of the fair value of mineral properties beyond proven and probable reserves. Changes in any of the assumptions or estimates used in determining the recoverable amount could result in additional impairment or reversal of impairment recognized. (ii) Estimated recoverable mineral reserves and mineral resources Mineral reserve and mineral resource estimates are based on various assumptions relating to operating matters, including, with respect to production costs, mining and processing recoveries, cut-off grades, as well as assumptions relating to long-term commodity prices and exchange rates and capital costs. Cost estimates are based primarily on feasibility study estimates or operating history. Estimates are prepared under supervision of appropriately qualified persons, but will be impacted by forecasted commodity prices, exchange rates, capital and production costs and recoveries amongst other factors. Estimated recoverable mineral reserves and mineral resources are used to determine the depreciation of property, plant and equipment at operating mine sites, in accounting for deferred stripping costs, in performing impairment testing and for forecasting the timing of the payment of decommissioning and restoration costs. Therefore, changes in the assumptions used could impact the carrying value of assets, depreciation and impairment charges recorded in the consolidated statement of operations and the carrying value of the asset retirement obligation. 4. Judgements and estimation uncertainty (continued) (iii) Inventory The Company considers ore stacked on its leach pads and in process at its mines as work-in-process inventory and includes them in production costs based on ounces of gold or tonnes of concentrate sold, using the following assumptions in its estimates: ▪the amount of gold and other metals estimated to be in the ore stacked on the leach pads; ▪the amount of gold expected to be recovered from the leach pads; ▪the amount of gold and other metals in the processing circuits; ▪the amount of gold and other metals in concentrates; and ▪the gold and other metal prices expected to be realized when sold. If these estimates or assumptions are inaccurate, the Company could be required to write down the value it has recorded on its work-in-process inventories, which would reduce earnings and working capital. (iv) Asset retirement obligation The asset retirement obligation provision represents management's best estimate of the present value of future cash outflows required to settle the liability which reflect estimates of future costs, inflation, requirements of the relevant legal and regulatory frameworks and the timing of restoration and rehabilitation activities. Estimated future cash outflows are discounted using a risk-free rate based on U.S. Treasury bond rates. Changes to asset retirement obligation estimates are recorded with a corresponding change to the related item of property, plant and equipment, or to the statement of operations if there is no related property, plant and equipment. Adjustments to the carrying amounts of related items of property, plant and equipment can result in a change to future depreciation expense. (v) Deferred taxes Judgements and estimates of recoverability are required in assessing whether deferred tax assets recognized on the consolidated statement of financial position are recoverable which is based on an assessment of the ability to use the underlying future tax deductions before they expire against future taxable income. Deferred tax liabilities arising from temporary differences on investments in subsidiaries, joint ventures and associates are recognized unless the reversal of the temporary differences is not expected to occur in the foreseeable future and can be controlled, which requires judgement. Assumptions about the generation of future taxable earnings and repatriation of retained earnings depend on management’s estimates of future production and sales volumes, commodity prices, reserves, operating costs, decommissioning and restoration costs, capital expenditures, dividends and other capital management transactions. The Company operates in multiple tax jurisdictions and judgement is required in the application of income tax legislation in these jurisdictions. These estimates and judgements are subject to risk and uncertainty and could result in an adjustment to current and deferred tax provisions and a corresponding increase or decrease to earnings or loss for the period.

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- Definition Judgements and Estimation Uncertainty [abstract] + References No definition available. + Details
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- Definition The disclosure of judgements that management has made in the process of applying the entity's accounting policies that have the most significant effect on amounts recognised in the financial statements along with information about the assumptions that the entity makes about the future, and other major sources of estimation uncertainty at the end of the reporting period, that have a significant risk of resulting in a material adjustment to the carrying amounts of assets and liabilities within the next year. [Refer: Carrying amount [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2022-03-24 -Paragraph 10 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_10_e&doctype=Standard -URIDate 2022-03-24 + Details
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